JP2011088156A - Method of manufacturing bar having deformed cross section - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method of manufacturing a bar having a deformed cross section, by which the bar having the deformed cross section is manufactured at high productivity without using a grooved roll and a punch. <P>SOLUTION: The method of manufacturing the bar 1 having the deformed cross section includes: a stage where the cross-sectional shape of a base material 2 is made into an uneven cross-sectional shape by performing cold-rolling of the base material 2 made of metal and the member 4 to be embedded before rolling arranged on the surface of the base material 2 with rolling rolls 5 and embedding a member 4 to be embedded before rolling into the base material 2; and a stage where the member 4 to be embedded before rolling (a member 6 to be embedded after rolling) which is embedded into the base material 2 is peeled from the base material 2 (the bar 1 having the deformed cross section). <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a method for manufacturing a modified cross-section strip, and more particularly, to a method for manufacturing a modified cross-section strip including a step of making a cross-sectional shape of a base material a concavo-convex shape.

  Conventionally, the manufacturing method of the irregular cross-section strip provided with the process which makes the cross-sectional shape of a base material uneven | corrugated shape is known (for example, refer patent document 1 and 2).

  In the above-mentioned Patent Document 1, while the flat plate material is gradually conveyed for each stroke of the V-shaped punch, the tip portion on the acute angle side of the V-shaped punch is pressed down to the flat plate material, and the flat plate material is moved in the plate width direction. A method of forming a modified cross-section plate comprising a step of making the cross-sectional shape of a flat plate material into a concavo-convex shape by gradually extending the flat plate material is disclosed.

  In the above-mentioned Patent Document 2, the thickness of a copper plate is reduced by a columnar first grooved roll having grooves formed on the outer peripheral surface and a columnar flat roll disposed at a position facing the grooved roll. The copper plate is buckled by a step of buckling and deforming the portion of the first grooved roll of the copper plate into the groove by rolling the portion to be rolled with a predetermined rolling force, and a pair of flat rolls without the groove. A copper plate by rolling a flat portion into a flat surface, a second grooved roll different from the first grooved roll, and a flat roll, having a groove having the same shape as the concave-convex shape that is the cross-sectional shape of the final product The manufacturing method of the irregular-shaped cross-section provided with the process which makes the cross-sectional shape of a copper plate uneven | corrugated shape by rolling the whole of this by the same rolling reduction is disclosed.

Japanese Patent Publication No.52-908 Japanese Patent Publication No.1-30563

  However, in the method of molding a modified cross-section plate disclosed in Patent Document 1, it is necessary to reduce the sharp-angled tip of the V-shaped punch to the flat plate material. Due to the occurrence of a portion where the V-shaped punch is not crushed, there is an inconvenience that a deformed cross-sectional plate with irregularities is formed. For this reason, since it is difficult to increase the speed at which the flat plate material is conveyed, it takes time to mold the irregular cross-section plate, and there is a problem in that productivity is lowered.

  Moreover, in the manufacturing method of the irregular cross-section strip disclosed by the said patent document 2, it is necessary to change the shape of the groove | channel of a 1st grooved roll and a 2nd grooved roll according to the kind of uneven | corrugated shape of the cross-sectional shape of a final product. There is. For this reason, it is necessary to prepare the first grooved roll and the second grooved roll as many as the number of uneven shapes to be formed. On the other hand, a grooved roll needs to use a material having a strength sufficiently greater than that of a member to be rolled (copper plate). Therefore, it takes time and labor (man-hours) to process such a material having a high strength. There is a problem.

  The present invention has been made to solve the above-described problems. One object of the present invention is to produce a deformed cross-section strip with high productivity without using a grooved roll and a punch. It is to provide a method for producing a possible deformed section strip.

Means for Solving the Problems and Effects of the Invention

  According to one aspect of the present invention, there is provided a method for manufacturing an irregular cross-section strip material, which comprises cold-rolling a metal base material and an embedded member disposed on the surface of the base material by a roller portion to embed the embedded member in the base material. By this, the process of making the cross-sectional shape of a base material into an uneven | corrugated shape, and the process of peeling the embedding member embedded in the base material from a base material are provided.

  In the method for producing a modified cross-section strip according to one aspect of the present invention, as described above, by cold rolling with the roller portion and embedding the embedded member in the base material, the cross-sectional shape of the base material is made uneven. By using an embedded member that can be easily processed without using a grooved roll that requires labor and time (man-hours) for processing, it is possible to easily manufacture deformed cross-section members having different cross-sectional shapes. Moreover, since it is possible to perform continuous rolling using the roller portion by cold rolling with the roller portion, unlike when using a V-shaped punch, even when the conveyance speed is increased, It is possible to suppress deformation of the irregular cross-section strip. Thereby, since it can suppress taking time to manufacture an irregular cross-section strip, an irregular cross-section strip can be manufactured with high productivity, without using a V-shaped punch.

  In the method for manufacturing a deformed cross-section strip according to the above aspect, preferably, the step of making the cross-sectional shape of the base material into a concavo-convex shape is performed by cold rolling with a roller portion while extending both the base material and the embedded member. A step of making the cross-sectional shape of the base material uneven by embedding an embedded member in the material. If comprised in this way, by carrying out cold rolling, extending both a base material and an embedding member, the cross-sectional shape of a base material can be easily made into uneven | corrugated shape without using a grooved roller or a V-shaped punch. Can be.

  In the method for producing a modified cross-section strip according to the above aspect, the surface roughness of the portion of the base material where the embedded member is embedded when the embedded member is peeled from the base material is preferably embedded in the embedded member. It is larger than the surface roughness of the base material other than the part that was covered. With this configuration, for example, when machining a portion (concave portion) in which the embedded member is embedded by polishing or the like, a portion in contact with the processing surface of the processing tool is a portion in which the embedded member is embedded (processing) Surface), the portion in which the embedded member is embedded can be easily processed.

  In the method for producing a deformed cross-section strip according to the above aspect, preferably, the step of cold rolling the base material and the embedded member with the roller portion is substantially the same as the diameter of the outer peripheral surface over the entire axial direction of the roller portion. A step of cold rolling the base material and the embedded member with the same roller portion; If comprised in this way, the diameter of an outer peripheral surface is substantially over the whole area of the axial direction of a roller part, without using the roller part with a groove | channel specially produced so that it may respond to the cross-sectional shape of a deformed cross-section strip. A deformed cross-section strip can be produced using the same normal roller section. Thereby, the unusual cross-section strip material from which cross-sectional shape differs can be manufactured more easily.

  In the method for producing a deformed cross-section strip according to the above aspect, preferably, the step of making the cross-sectional shape of the base material into a concavo-convex shape continuously cools the base material extending in a strip shape in the transport direction and the embedded member by the roller portion. It includes a step of making the cross-sectional shape of the base material uneven by embedding and embedding the embedded member in the base material. If comprised in this way, the embedding member extended in strip | belt shape will be arrange | positioned on the surface of the base material extended | stretched in strip | belt shape, and the irregular cross-section strip | line which will extend easily in strip | belt shape by performing the process of cold rolling by a roller part continuously. The material can be manufactured with high productivity.

  In the method for producing a deformed cross-section strip according to the one aspect, preferably, the tensile strength of the embedded member is 50% or more and 150% or less of the tensile strength of the base material. If comprised in this way, it can suppress that the reduction force in which an embedding member deform | transforms, and the reduction force in which a base material deform | transforms largely differ. Thereby, since the embedding member and the base material can be easily cold-rolled together, the embedding member can be easily embedded in the base material.

  In this case, preferably, the tensile strength of the embedded member is not less than 90% and not more than 120% of the tensile strength of the substrate. If comprised in this way, it can suppress more greatly that the rolling-down force which an embedding member deform | transforms, and the rolling-down force which a base material deform | transforms are large. Thereby, since the embedding member and the base material can be easily cold-rolled together, the embedding member can be embedded in the base material more easily.

  In the method for manufacturing a modified cross-section strip in which the embedded member has a tensile strength of 50% to 150% of the tensile strength of the base material, the embedded member is preferably made of the same material as the base material. If constituted in this way, the difference between the properties (plastic workability) such as the tensile strength of the substrate and the properties of the embedded member can be made very small. Therefore, it is possible to further suppress the deformation of the surface of the portion where the embedded member is embedded. Thereby, the embedding member embedded in the base material can be more easily separated from the base material after the cold rolling.

  In the method for producing a deformed cross-section strip in which the embedded member is made of the same material as the base material, preferably, the base material and the embedded member are made of a Ni—Fe alloy. If constituted in this way, the difference between the properties (plastic workability) such as the tensile strength of the base material made of the Ni—Fe alloy and the properties of the embedded member made of the Ni—Fe alloy can be made very small. Therefore, it is possible to further suppress deformation of the surface of the portion where the embedded member is embedded in the base material made of the Ni—Fe alloy during the cold rolling. Thereby, the embedding member embedded in the base material can be more easily separated from the base material after the cold rolling. Moreover, the cross-sectional shape of a base material can be easily made into an uneven | corrugated shape by using for a base material and an embedding member the Ni-Fe alloy in which plastic working is easy to some extent.

  In the method for manufacturing a modified cross-section strip according to the above aspect, the base material is preferably made of a Ni—Fe alloy and the embedded member is made of Fe. With this configuration, the difference between the properties (plastic workability) such as the tensile strength of the base material made of the Ni—Fe alloy and the properties of the embedded member made of Fe can be reduced. It is possible to suppress deformation of the surface of the portion where the embedded member is embedded in the base material made of the Ni—Fe alloy during the intermediate rolling. Thereby, the embedding member embedded in the base material can be easily peeled off from the base material after the cold rolling.

  In the method for manufacturing a modified cross-section strip according to the above aspect, the base material is preferably made of a Ni—Fe alloy, and the embedded member is made of a Cr—Ni—Fe alloy. If constituted in this way, the difference between the properties (plastic workability) such as the tensile strength of the base material made of Ni—Fe alloy and the properties of the embedded member made of Cr—Ni—Fe alloy should be reduced. Therefore, it is possible to suppress deformation of the surface of the portion where the embedded member is embedded in the base material made of the Ni—Fe alloy during cold rolling. Thereby, the embedding member embedded in the base material can be easily peeled off from the base material after the cold rolling.

  In the method for producing a modified cross-section strip according to the above aspect, preferably, the thickness of the thinnest part of the base material when the cross-sectional shape of the base material is uneven is 59% or more of the thickness of the thickest part. . If comprised in this way, using the base material, the embedding member, and the roller part, the deformed cross-section strip material having an uneven cross-sectional shape in which the thickness of the thinnest part is 59% or more of the thickness of the thickest part is obtained. It can be manufactured easily.

  In this case, preferably, the thickness of the thinnest part of the base material when the cross-sectional shape of the base material is an uneven shape is 59% or more and 90% or less of the thickness of the thickest part. If comprised in this way, using the base material, the embedding member, and the roller part, the odd-shaped cross section having an uneven cross-sectional shape in which the thickness of the thinnest part is 59% or more and 90% or less of the thickness of the thickest part The strip can be easily manufactured.

  In the method for producing a deformed cross-section strip according to the above aspect, the step of making the cross-sectional shape of the base material preferably has a concave-convex shape is performed by cold rolling the belt-like base material and the belt-like embedded member with a roller portion. A step of making the cross-sectional shape of the base material uneven by embedding an embedded member in the material. If comprised in this way, the cross-sectional shape of a base material can be easily formed in a substantially rectangular shape using a strip | belt-shaped base material and a strip | belt-shaped embedding member.

It is the top view which showed the irregular cross-section strip by 1st Embodiment of this invention. It is sectional drawing of the irregular cross-section strip along the 1000-1000 line | wire of FIG. It is an expanded sectional view of the irregular cross-section strip along the 1000-1000 line of FIG. It is the figure which showed the manufacturing method of the irregular cross-section strip shown in FIG. It is sectional drawing of the base material and the embedding member before rolling along the 2000-2000 line | wire of FIG. It is sectional drawing of the base material and the embedding member before rolling along the 3000-3000 line | wire of FIG. It is sectional drawing of the irregular cross-section strip along the 4000-4000 line | wire of FIG. 4, and the embedding member after rolling. It is the table | surface which showed the result of the 1st dimension measurement of the thickness of each part of the irregular cross-section strips performed in order to confirm the effect of 1st-4th embodiment. It is the graph which showed the result of the 1st dimension measurement of the thickness of each part of the irregular cross-section strip performed in order to confirm the effect of 1st-4th embodiment. It is the table | surface which showed the result of the surface roughness measurement of the irregular cross-section strip material performed in order to confirm the effect of 1st-4th embodiment. It is the table | surface which showed the result of the 2nd dimension measurement of the thickness of each part of the irregular cross-section strip performed in order to confirm the effect of 5th Embodiment. It is the graph which showed the result of the 2nd dimension measurement of the thickness of each part of the irregular cross-section strips performed in order to confirm the effect of a 5th embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(First embodiment)
First, with reference to FIGS. 1-3, the structure of the irregular cross-section strip 1 by 1st Embodiment of this invention is demonstrated.

As shown in FIG. 1, the irregular cross-section strip 1 according to the first embodiment of the present invention is a continuous body extending in a band shape in the Y direction. Moreover, the width | variety of the X direction of the irregular cross-section strip 1 is W1. The irregular cross-section strip 1 is made of a 36Ni-Fe alloy containing about 36% by mass of Ni in Fe. The tensile strength of the 36Ni—Fe alloy is about 500 N / mm ² .

  Moreover, in 1st Embodiment, the groove part 10 is uniformly formed in the upper surface (surface by the side of Z1 of FIG. 2) of the irregular cross-section strip 1 so that it may extend in parallel with a conveyance direction (Y direction). That is, as shown in FIGS. 2 and 3, the irregular cross-section strip 1 is formed so that the cross-sectional shape is substantially rectangular (uneven shape). Further, the surface roughness of the surface of the bottom surface 10 a of the groove portion 10 is larger than the surface roughness of the surface of the upper surface portion 11.

  Moreover, as shown in FIG. 2 and FIG. 3, the irregular cross-section strip 1 has a lower surface 12 (a surface on the Z2 side) formed of a substantially flat surface. Moreover, as shown in FIG. 3, the thickness t1 (interval between the upper surface part 11 and the lower surface 12) of the thickest part of the irregular cross-section strip 1 is about 0.40 mm. In addition, the thickness t2 of the thinnest portion of the irregular cross-section strip 1 (the interval between the bottom surface 10a and the bottom surface 12 of the groove 10) is about 0.27 mm or more and about 0.36 mm or less. That is, the thickness t2 of the thinnest portion of the irregular cross-section strip 1 is about 68% or more and about 90% or less of the thickness t1 of the thickest portion of the irregular cross-section strip 1. Further, the distance (depth) D in the Z direction between the bottom surface 10a and the top surface portion 11 of the groove portion 10 is not less than about 0.04 mm and not more than about 0.16 mm. Further, the width of the groove portion 10 (the width in the X direction between the side surface 10b on the X1 side of the groove portion 10 and the side surface 10c on the X2 side of the groove portion 10) is W2.

  Next, with reference to FIG. 1 and FIGS. 4-7, the manufacturing method of the irregular cross-section strip 1 by 1st Embodiment of this invention is demonstrated.

  First, with reference to FIG. 4, the manufacturing apparatus of the irregular cross-section strip 1 by 1st Embodiment is demonstrated. On the Y1 side of the manufacturing apparatus, a base material 2 made of a continuous strip wound in a roll on a roll A and a guide roller for guiding the strip-shaped base 2 extended from the roll A to a predetermined height. 3 are arranged. Further, on the upper surface 2a side of the base material 2 wound in a coil shape, a pre-rolling embedding member 4 made of a strip-shaped continuous body wound in a coil shape on the roll α is disposed. The base material 2 and the embedding member 4 before rolling are made of metal made of a 36Ni—Fe alloy. That is, the tensile strength of the embedding member 4 before rolling is the same as the tensile strength of the base material 2 (about 100%). In addition, the base material 2 is the state before forming the groove part 10 (refer FIG. 6 and FIG. 7) in the irregular cross-section strip 1 (refer FIG. 6 and FIG. 7), and the width | variety (FIG. (Not shown) is larger than the width W1 (see FIG. 1) in the X direction of the irregular cross-section strip 1. The pre-rolling embedded member 4 is an example of the “embedded member” in the present invention.

  Moreover, the base material 2 is comprised so that it may convey by the predetermined | prescribed conveyance speed toward the Y2 side with the rolling roller part 5 mentioned later and the roll B mentioned later. Further, the pre-rolling embedded member 4 is configured to be conveyed toward the Y2 side at the substantially same conveying speed as the base member 2 by the rolling roller unit 5 and a roll β described later. Further, the pre-rolling embedding member 4 is configured to be conveyed toward the Z2 side so as to be positioned on the upper surface 2a of the substrate 2 on the Y1 side of the rolling roller portion 5.

  Further, on the Y2 side of the roll A and the roll α of the manufacturing apparatus, a rolling roller unit 5 that is a four-high rolling mill including a pair of work rollers 5a and a pair of backup rollers 5b is disposed. The pair of work rollers 5a are respectively arranged above (Z1 side) and below (Z2 side) the embedding member 4 before rolling, sandwich the embedding member 4 before rolling from above and below, and directly roll the embedding member 4 before rolling. It is configured as follows. Further, the pair of backup rollers 5b are arranged above and below the pair of work rollers 5a, respectively, and are configured to have a larger diameter than the pair of work rollers. In addition, the rolling roller unit 5 conveys the base material 2 extended from the roll A and the pre-rolling embedded member 4 extended from the roll α toward the Y2 side, and before rolling onto the upper surface 2a of the base material 2. With the embedded member 4 positioned, both the base material 2 and the pre-rolling embedded member 4 are configured to be rolled. Further, the rolling by the rolling roller unit 5 is configured to be performed at room temperature. That is, the rolling by the rolling roller unit 5 is so-called cold rolling. The rolling roller portion 5 is an example of the “roller portion” in the present invention.

  In the first embodiment, the pair of work rollers 5a and the pair of backup rollers 5b both have substantially the same outer peripheral surface diameter in the entire axial direction (X direction in FIG. 5). It is a normal flat rolling roller in which is not formed.

  Moreover, the irregular cross-section strip 1 formed from the base material 2 by passing the rolling roller part 5 by the roll B arranged on the Y2 side of the rolling roller part 5 of the manufacturing apparatus is coiled at a predetermined speed. It is configured to be wound up. Further, the post-roll embedding member 6 formed from the pre-rolling embedding member 4 by passing through the rolling roller portion 5 by the roll β arranged on the Y2 side of the rolling roller portion 5 is the upper side ( It is configured to be wound in a coil shape on the Z1 side). At this time, the post-rolling embedded member 6 is configured to be wound in a coil shape at substantially the same conveying speed as the deformed cross-section strip 1. Further, the irregular cross-section strip 1 and the post-rolling embedded member 6 are configured to be a belt-like continuous body. A guide roller 7 is disposed on the Y2 side of the rolling roller unit 5 of the manufacturing apparatus to guide the belt-like base material 2 so as to pass the rolling roller unit 5 at a predetermined height.

  Next, with reference to FIGS. 4-7, the manufacturing process of the irregular cross-section strip 1 by 1st Embodiment is demonstrated. First, as shown in FIG. 4, the base material 2 wound in a coil shape on the roll A is conveyed at a predetermined speed toward the Y <b> 2 side while being guided to a predetermined height by the guide roller 3. Further, the pre-rolling embedded member 4 wound in a coil shape on the roll α is conveyed at a predetermined speed toward the Y2 side and the upper surface 2a side (Z2 side) of the substrate 2. Moreover, as shown in FIG. 5, the thickness t3 of the base material 2 in the Z direction is about 0.60 mm. The thickness t4 in the Z direction of the embedding member 4 before rolling is about 0.20 mm or more and about 0.60 mm or less, and the width W3 in the X direction of the embedding member 4 before rolling is about 4.10 mm or more and about 5.00 mm. It is as follows.

  Here, in 1st Embodiment, the embedding member 4 before rolling arrange | positioned on the upper surface 2a of the base material 2 and the base material 2 which were conveyed by the rolling roller part 5 to the Y1 side of the rolling roller part 5 by predetermined speed. And both are rolled. At that time, both the base material 2 and the pre-rolling embedded member 4 are rolled by the rolling roller unit 5 while being extended in the width direction (X direction) and the conveying direction (Y direction). The pre-rolling embedding member 4 is embedded in the upper surface 2 a of the substrate 2 by rolling by the rolling roller unit 5. Moreover, the cold rolling by the rolling roller unit 5 is continuously performed. That is, the base material 2 and the pre-rolling embedded member 4 are cold-rolled by the rolling roller unit 5 while being continuously conveyed from the Y1 side to the Y2 side.

  Accordingly, as shown in FIG. 6, the base material 2 is rolled by the rolling roller unit 5, so that the thickness t <b> 3 (about 0.60 mm: see FIG. 5) in the Z direction is t <b> 1 (about 0.40 mm: figure). 7) and a groove is formed on the upper surface 2a of the substrate 2. Further, the pre-rolling embedding member 4 is also rolled into the rolling roller portion 5, so that the thickness in the Z direction is reduced similarly to the base 2, and is embedded in a groove formed on the upper surface 2 a of the base 2. As a result, the modified cross-section strip 1 in a state in which the post-rolling embedded member 6 is embedded in the groove portion 10 of the modified cross-section strip 1 is produced. At this time, the cross-sectional shape of the irregular cross-section strip 1 becomes an uneven shape by forming the groove 10. The post-rolling embedded member 6 is an example of the “embedded member” in the present invention.

  Thereafter, as shown in FIG. 4, the post-rolling embedded member 6 embedded in the groove portion 10 of the irregular cross-section strip 1 is peeled from the groove portion 10 of the irregular cross-section strip 1 that has passed through the rolling roller portion 5. It is conveyed at a predetermined speed toward the Y2 side and the Z1 side (see FIG. 7). And the embedding member 6 after rolling is wound up in coil shape in the roll (beta). Thereby, the irregular cross-section strip 1 is manufactured by peeling the embedding member 6 from the groove 10 after rolling.

  The deformed cross-section strip 1 from which the embedding member 6 is peeled after rolling from the groove 10 is conveyed at a predetermined speed toward the Y2 side while being guided by the guide roller 7. And the irregular cross-section strip 1 is wound in the coil shape in the roll B. FIG. At this time, as shown in FIG. 7, even if rolling is performed in which the pre-rolling embedded member 4 (see FIG. 6) is embedded in the upper surface 2 a (see FIG. 6) of the substrate 2 by the rolling roller unit 5, On the lower surface 12 (the surface on the Z2 side) of the material 1, there is no uneven shape in the width direction (X direction), and a convex shape is formed along the groove portion 10 in the transport direction (Y direction in FIG. 4). It is not made and is a substantially flat surface shape.

  Moreover, the thickness t5 in the Z direction of the peeled embedded member 6 after rolling is smaller than the thickness t4 in the Z direction of the embedded member 4 before rolling (see FIG. 5). Further, the width W4 in the X direction of the embedded member 6 after rolling is larger than the width W3 in the X direction of the embedded member 4 before rolling (see FIG. 5). That is, the irregular cross-section strip 1 and the embedded member 6 after rolling are reduced in thickness in the Z direction by rolling the base material 2 and the embedded member 4 before rolling in the thickness direction (Z direction), respectively. The width of the direction increases. Here, the width W4 in the X direction of the embedding member 6 after rolling peeled from the groove portion 10 and the length W2 in the X direction of the groove portion 10 are substantially the same.

  In the first embodiment, as described above, the base material 2 made of a strip-shaped continuous body that is cold-rolled by the rolling roller unit 5 (the pair of work rollers 5a and the pair of backup rollers 5b) and wound in a coil shape. By forming the groove 10 in the irregular cross-section strip 1 by embedding the pre-rolling embedding member 4 made of a strip-like continuous body wound in a coil shape, a grooved roll that takes time and effort (man-hours) for processing is provided. By using the pre-rolling embedding member 4 that is easy to process without being used, it is possible to easily manufacture the modified cross-section strip 1 having a different cross-sectional shape. Moreover, since it is possible to perform continuous rolling using the rolling roller unit 5 by cold rolling with the rolling roller unit 5, the conveyance speed is increased unlike the case of using a V-shaped punch. Also in the case, it can suppress that the irregular cross-section strip 1 becomes distorted. Thereby, since it can suppress taking time to manufacture the irregular cross-section strip 1, the irregular cross-section strip 1 can be manufactured with high productivity. Further, the cross-sectional shape can be easily formed in a substantially rectangular shape by using the belt-like base material 2 and the belt-like pre-rolling embedding member 4.

  In the first embodiment, as described above, the rolling roller unit 5 extends both the base material 2 and the pre-rolling embedded member 4 in the width direction (X direction) and the transport direction (Y direction). By being configured to be rolled, the cross-sectional shape of the substrate 2 can be easily formed into an uneven shape without using a grooved roller or a V-shaped punch. Further, both the base material 2 and the embedding member 4 before rolling are extended not only in the transport direction (Y direction) but also in the width direction (X direction), thereby extending only in the transport direction (Y direction). The buckling deformation of the base material 2 can be suppressed.

  Further, in the first embodiment, as described above, by making the surface roughness of the surface of the bottom surface 10a of the groove portion 10 larger than the surface roughness of the surface of the upper surface portion 11, for example, the bottom surface 10a of the groove portion 10 is polished. When machining is performed by the above, since the teeth of the part that contacts the machining surface of the processing tool can be easily applied to the bottom surface 10a (machining surface), the bottom surface 10a of the groove portion 10 can be easily machined.

  In the first embodiment, as described above, the rolling roller portion 5 (the pair of work rollers 5a and the pair of backup rollers 5b) has substantially the same outer peripheral diameter over the entire area in the axial direction. By forming the roller section with a groove that is specially produced so as to correspond to the cross-sectional shape (groove section 10) of the deformed cross-section strip 1 by configuring it to be composed of a normal flat rolling roller in which no groove is formed. Without using it, the irregular cross-section strip 1 can be manufactured. Thereby, the irregular cross-section strip 1 from which cross-sectional shape differs can be manufactured easily.

  Moreover, in 1st Embodiment, as mentioned above, the base material 2 extended in strip shape and the embedding member 4 before rolling extended in strip shape arrange | positioned on the upper surface 2a of the base material 2 are continuously made from the Y1 side to the Y2 side. By carrying out cold rolling with the rolling roller unit 5 while being conveyed, the deformed cross-section strip 1 extending in a strip shape can be easily produced with high productivity.

  In the first embodiment, as described above, the embedding member 4 before rolling is made of a 36Ni—Fe alloy having the same material composition as that of the modified cross-section strip 1, so that the tensile strength of the base material 2 is increased. Since the property (plastic workability) and the property of the embedding member 4 before rolling can be made the same, in the base material 2 (deformed cross-section strip 1) made of 36Ni-Fe alloy during cold rolling. Further, the deformation of the surface of the bottom surface 10a of the groove portion 10 can be further suppressed. Thereby, the embedding member 4 before rolling embedded in the base material 2 can be more easily peeled from the base material 2 after the cold rolling. Moreover, the cross-sectional shape of the base material 2 can be easily made uneven by using a Ni—Fe alloy which is easily plasticized to some extent for the base material 2 and the embedding member 4 before rolling.

  In the first embodiment, as described above, the thickness t2 that is the thinnest portion of the irregular cross-section strip 1 is about 68% or more and about 90% or less of the thickness t1 that is the thickest portion of the irregular cross-section strip 1. By using the base material 2, the pre-rolling embedding member 4 and the rolling roller portion 5, the thickness t2 of the thinnest portion of the base material 2 is about 68% or more of the thickness t1 of the thickest portion. The irregular cross-section strip 1 having an uneven cross-sectional shape of about 90% or less can be easily manufactured.

(Second Embodiment)
Next, a second embodiment of the present invention will be described with reference to FIGS. In the manufacturing method of the modified cross-section strip 200 according to the second embodiment, a case will be described in which the pre-rolling embedded member 204 is made of a 42Ni-Fe alloy, unlike the manufacturing method of the modified cross-section strip 1 of the first embodiment. In addition, the structure of the irregular cross-section strip 200 of 2nd Embodiment is the same as that of the said 1st Embodiment.

  With reference to FIG. 4 and FIG. 5, the manufacturing method of the irregular cross-section strip 200 by 2nd Embodiment of this invention is demonstrated.

In the method for manufacturing the modified cross-section strip 200 according to the second embodiment of the present invention, as shown in FIGS. 4 and 5, the base material 2 is a 36Ni—Fe alloy (tensile strength: approximately 500N / mm ² ), and the pre-rolling embedded member 204 is made of a 42Ni—Fe alloy containing about 42% by mass of Ni in Fe. That is, the embedding member 204 before rolling is made of the same metal material as the material composition of the base material 2 (36Ni—Fe alloy), but the Ni content is different from that of the base material 2. The tensile strength of the 42Ni—Fe alloy is about 500 N / mm ² . That is, the tensile strength of the embedding member 204 before rolling is about 100% of the tensile strength of the substrate 2. Further, the thickness t4 (see FIG. 5) of the embedding member 204 before rolling is about 0.30 mm or more and about 0.35 mm or less. The pre-rolling embedded member 204 is an example of the “embedded member” in the present invention. In addition, the other manufacturing method of the irregular cross-section strip 200 of 2nd Embodiment is the same as that of the said 1st Embodiment.

In 2nd Embodiment, while using the base material 2 which consists of 36Ni-Fe alloy (tensile strength: about 500 N / mm < ² >) as mentioned above, it is 42Ni-Fe which is the same Ni-Fe alloy as 36Ni-Fe alloy. By using the pre-rolling embedded member 204 made of an alloy (tensile strength: about 500 N / mm ² ), properties (plastic workability) such as the tensile strength of the base material 2 made of 36Ni—Fe alloy, and 42Ni— Since the difference from the property of the embedded member 204 before rolling made of Fe alloy can be made very small, during cold rolling, in the substrate 2 made of 36Ni—Fe alloy (deformed cross-section strip 200), It is possible to further suppress the deformation of the surface of the bottom surface of the groove portion. Thereby, the pre-rolling embedding member 204 embedded in the base material 2 can be more easily separated from the base material 2 after the cold rolling. In addition, the other effect of the irregular cross-section strip 200 of 2nd Embodiment is the same as that of the said 1st Embodiment.

(Third embodiment)
Next, a third embodiment of the present invention will be described with reference to FIGS. In the manufacturing method of the modified cross-section strip 300 according to the third embodiment, the case where the embedding member 304 before rolling is made of Fe will be described, unlike the manufacturing method of the modified cross-section strip 1 of the first embodiment. In addition, the structure of the irregular cross-section strip 300 of 3rd Embodiment is the same as that of the irregular cross-section strip 1 of the said 1st Embodiment.

  With reference to FIG. 4 and FIG. 5, the manufacturing method of the irregular cross-section strip 300 by 3rd Embodiment of this invention is demonstrated.

In the method of manufacturing the modified cross-section strip 300 according to the third embodiment of the present invention, as shown in FIGS. 4 and 5, the base material 2 is a 36Ni—Fe alloy (tensile strength: approximately 500N / mm ² ), and the pre-rolling embedded member 304 is made of Fe. That is, the pre-rolling embedding member 304 is made of a metal material different from the material composition of the base material 2 (36Ni—Fe alloy), and includes the same metal element (Fe) as the metal element contained in the base material 2. Has been. The tensile strength of Fe is about 450 N / mm ² . That is, the tensile strength of the embedding member 304 before rolling is about 90% of the tensile strength of the substrate 2. Further, the thickness t4 (see FIG. 5) of the embedding member 304 before rolling is about 0.35 mm or more and about 0.45 mm or less, and the width W3 (see FIG. 5) of the embedding member 304 before rolling in the X direction is , About 5.00 mm. The pre-rolling embedded member 304 is an example of the “embedded member” in the present invention. In addition, the other manufacturing method of the irregular cross-section strip 300 of 3rd Embodiment is the same as that of the said 1st Embodiment.

In 3rd Embodiment, while using the base material 2 which consists of a 36Ni-Fe alloy (tensile strength: about 500 N / mm < ² >) as mentioned above, Fe (which is one of the metal elements which comprise the base material 2) By using the pre-rolling embedded member 304 having a tensile strength of about 450 N / mm ² ), properties such as the tensile strength (plastic workability) of the base material 2 made of 36Ni—Fe alloy and rolling made of Fe are used. Since the difference from the property of the pre-embedding member 304 can be reduced, the surface of the bottom surface of the groove portion is deformed in the base material 2 (deformed cross-section strip 300) made of 36Ni—Fe alloy during cold rolling. It can be suppressed more. Thereby, the embedding member 304 before rolling embedded in the base material 2 can be easily peeled from the base material 2 after the cold rolling. In addition, the other effect of the irregular cross-section strip 300 of 3rd Embodiment is the same as that of the said 1st Embodiment.

(Fourth embodiment)
Next, a fourth embodiment of the present invention will be described with reference to FIG. 4 and FIG. In the manufacturing method of the irregular cross-section strip 400 according to the fourth embodiment, unlike the manufacturing method of the irregular cross-section strip 1 of the first embodiment, the case where the embedding member 404 before rolling is made of an 18Cr-8Ni—Fe alloy will be described. To do. In addition, the structure of the irregular cross-section strip 400 of 4th Embodiment is the same as that of the irregular cross-section strip 1 of the said 1st Embodiment.

  With reference to FIG. 4 and FIG. 5, the manufacturing method of the irregular cross-section strip 400 by 4th Embodiment of this invention is demonstrated.

In the method of manufacturing the deformed cross-section strip 400 according to the fourth embodiment of the present invention, as shown in FIGS. 4 and 5, the substrate 2 is made of 36Ni—Fe alloy (tensile strength: approximately 500N / mm ² ) and the pre-rolling embedding member 404 is made of 18Cr-8Ni—Fe alloy (SUS304) containing about 18% by mass of Cr and about 8% by mass of Ni in Fe. That is, the embedding member 404 before rolling is made of a metal material different from the material composition of the base material 2 (36Ni—Fe alloy), while containing the same metal elements (Ni and Fe) as the metal elements contained in the base material 2. It is configured. Note that the tensile strength of SUS304 is about 600 N / mm ² . That is, the tensile strength of the embedding member 404 before rolling is about 120% of the tensile strength of the substrate 2. The thickness t4 (see FIG. 5) of the embedding member 404 before rolling is about 0.35 mm or more and about 0.45 mm or less, and the width W3 (see FIG. 5) of the embedding member 404 before rolling in the X direction is , About 5.00 mm. The pre-rolling embedded member 404 is an example of the “embedded member” in the present invention. In addition, the other manufacturing method of the irregular cross-section strip 400 of 4th Embodiment is the same as that of the said 1st Embodiment.

In 4th Embodiment, while using the base material 2 which consists of 36Ni-Fe alloy (tensile strength: about 500 N / mm < ² >) as mentioned above, the same Ni and Fe as the metal element which comprises the base material 2 are included. By using the pre-rolling embedded member 404 made of 18Cr-8Ni-Fe alloy (tensile strength: about 600 N / mm ² ), properties such as tensile strength of the base material 2 made of 36Ni—Fe alloy (plastic workability) ) And the property of the pre-rolling embedded member 404 made of SUS304 can be reduced, and in the cold rolling, the base material 2 made of a 36Ni-Fe alloy (deformed cross-section strip 400), It is possible to further suppress the deformation of the surface of the bottom surface of the groove portion. Thereby, the embedding member 404 before rolling embedded in the base material 2 can be easily peeled from the base material 2 after the cold rolling. In addition, the other effect of the irregular cross-section strip 400 of 4th Embodiment is the same as that of the said 1st Embodiment.

(Fifth embodiment)
Next, a fifth embodiment of the present invention will be described with reference to FIGS. In the manufacturing method of the modified cross-section strip 500 according to the fifth embodiment, unlike the manufacturing method of the modified cross-section strip 1 of the first embodiment, the thickness t1 (the upper surface portion 11 and the top surface portion 11) of the thickest portion of the modified cross-section strip 500 is different. The case where rolling is performed so that the distance between the lower surface 12 and the lower surface 12 is about 0.30 mm or more and about 0.32 mm or less will be described.

  First, with reference to FIG. 3, the structure of the irregular cross-section strip material 500 by 5th Embodiment of this invention is demonstrated.

  As shown in FIG. 3, the thickness t1 (interval between the upper surface portion 11 and the lower surface 12) of the thickest portion of the irregular cross-section strip 500 according to the fifth embodiment of the present invention is about 0.30 mm or more and about 0.0. It is 32 mm or less. In addition, the thickness t2 of the thinnest portion of the irregular cross-section strip 500 (the interval between the bottom surface 10a and the bottom surface 12 of the groove 10) is about 0.18 mm or more and about 0.22 mm or less. That is, the thickness t2 of the thinnest portion of the irregular cross-section strip 500 is about 59% or more and about 90% or less of the thickness t1 of the thickest portion of the irregular cross-section strip 500. The Z-direction interval (depth) D between the bottom surface 10a of the groove 10 and the top surface 11 of the irregular cross-section member 500 is about 0.10 mm or more and about 0.13 mm or less. In addition, the other structure of the irregular cross-section strip 500 of 5th Embodiment is the same as that of the irregular cross-section strip 1 of the said 1st Embodiment.

  Next, with reference to FIG. 4 and FIG. 5, the manufacturing method of the irregular cross-section strip 500 by 5th Embodiment of this invention is demonstrated.

  In the method of manufacturing the modified cross-section strip 500 according to the fifth embodiment of the present invention, as shown in FIGS. 4 and 5, the base material 2 and the pre-rolling embedded member 4 are 36Ni—Fe as in the first embodiment. Made of alloy. Further, the thickness t4 (see FIG. 5) of the embedding member 4 before rolling is about 0.40 mm or more and about 0.50 mm or less, and the width W3 (see FIG. 5) of the embedding member 4 before rolling in the X direction is , About 3.80 mm. Further, the base material 2 is rolled by the rolling roller portion 5 so that the thickness t3 (about 0.60 mm) in the Z direction becomes t1 (about 0.30 mm or more and about 0.32 mm or less). 500 is created. In addition, the other manufacturing method of the irregular cross-section strip 500 of 5th Embodiment is the same as that of the said 1st Embodiment.

  In the fifth embodiment, as described above, the thickness t2 which is the thinnest portion of the irregular cross-section strip 500 is about 59% or more and about 90% or less of the thickness t1 which is the thickest portion of the irregular cross-section strip 500. By configuring in this way, using the base material 2, the embedding member 4 before rolling, and the rolling roller portion 5, the thickness t2 of the thinnest part of the base material 2 is about 59% or more of the thickness t1 of the thickest part and about 90%. It is possible to easily manufacture the irregular cross-section strip 500 having an uneven cross-sectional shape that is not more than%. In addition, the other effect of the irregular cross-section strip 500 of 5th Embodiment is the same as that of the said 1st Embodiment.

[Example]
Next, with reference to FIG. 1, FIG. 3, FIG. 5 and FIG. 8 to FIG. 12, the first dimension performed for confirming the effect of the method for manufacturing the irregular cross-section strip according to the first to fourth embodiments. The measurement and the surface roughness measurement, and the second dimension measurement performed to confirm the effect of the method for producing the irregular cross-section strip according to the fifth embodiment will be described.

  In the first dimension measurement and surface roughness measurement described below, based on the manufacturing method of the irregular cross-section strip in the first to fourth embodiments, the common base material and the example of the table shown in FIG. Using the pre-rolling embedded members corresponding to 1 to 15, irregular cross-section strips corresponding to Examples 1 to 15 were produced. Here, Examples 1 to 9 correspond to the first embodiment, and Examples 10 and 11 correspond to the second embodiment. Examples 12 and 13 correspond to the third embodiment, and Examples 14 and 15 correspond to the fourth embodiment.

  Specifically, using a rolling roller portion whose outer peripheral surface is a substantially flat surface, a base material made of 36Ni—Fe alloy and a pre-rolling embedded member corresponding to Examples 1 to 15 are rolled onto the upper surface of the base material. Cold rolling was performed so that the pre-embedding member was embedded. And the irregular-shaped cross-section corresponding to Examples 1-15 was produced by peeling the embedding member from the irregular-shaped cross-section after rolling. Here, the base material was configured to have a thickness t4 (see FIG. 5) of 0.60 mm and a width in the X direction (not shown) of 17.95 mm. Moreover, the length (thickness) t1 (refer FIG. 3) of the upper surface part and lower surface of the irregular cross-section strip corresponding to Examples 1-15 after cold rolling was comprised so that it might be 0.40 mm.

Here, as shown in FIG. 8, in Examples 1-9, the embedded member before rolling which consists of a 36Ni-Fe alloy (tensile strength: 500 N / mm < ² >) was used. In Examples 1 to 4 corresponding to the first embodiment, a pre-rolling embedded member having a width W3 (see FIG. 5) of 4.10 mm was used. Moreover, in Example 1, the embedding member before rolling whose thickness t4 (refer FIG. 5) is 0.20 mm was used. In Example 2, a pre-rolling embedded member having a thickness t4 of 0.25 mm was used. In Example 3, a pre-rolling embedded member having a thickness t4 of 0.30 mm was used. In Example 4, a pre-rolling embedded member having a thickness t4 of 0.45 mm was used.

  Moreover, in Examples 5-9 corresponding to the said 1st Embodiment, the embedding member before rolling whose width W3 is 5.00 mm was used. In Example 5, a pre-rolling embedded member having a thickness t4 of 0.30 mm was used. Moreover, in Example 6, the embedding member before rolling whose thickness t4 is 0.35 mm was used. In Example 7, a pre-rolling embedded member having a thickness t4 of 0.45 mm was used. Moreover, in Example 8, the embedding member before rolling whose thickness t4 is 0.50 mm was used. In Example 9, a pre-rolling embedded member having a thickness t4 of 0.60 mm was used.

As shown in FIG. 8, in Examples 10 and 11 corresponding to the second embodiment, the width W3 (see FIG. 5) is 4.10 mm, and a 42Ni—Fe alloy (tensile strength: 500 N / mm ² ) was used. In Example 10, a pre-rolling embedded member having a thickness t4 (see FIG. 5) of 0.30 mm was used. In Example 11, a pre-rolling embedded member having a thickness t4 of 0.35 mm was used.

In Examples 12 and 13 corresponding to the third embodiment, a pre-rolling embedded member having a width W3 of 5.00 mm and Fe (tensile strength: 450 N / mm ² ) was used. In Example 12, a pre-rolling embedded member having a thickness t4 of 0.35 mm was used. Moreover, in Example 13, the embedding member before rolling whose thickness t4 is 0.45 mm was used.

Further, in Examples 14 and 15 corresponding to the fourth embodiment, the width W3 is 5.00 mm, and before rolling made of an 18Cr-8Ni—Fe alloy (SUS304) (tensile strength: 600 N / mm ² ). An embedded member was used. Moreover, in Example 14, the embedding member before rolling whose thickness t4 is 0.35 mm was used. In Example 15, a pre-rolling embedded member having a thickness t4 of 0.45 mm was used.

  By using a base material corresponding to Examples 1 to 15 and a pre-rolling embedding member, an irregular cross-section strip is produced, thereby having a groove formed so that the cross-sectional shape is substantially rectangular (uneven shape). An irregular cross-section strip was prepared.

(First dimension measurement)
In the first dimension measurement, the dimension of the distance (depth) D (see FIG. 3) in the Z direction between the bottom surface and the top surface of the groove portion of the modified cross-section corresponding to Examples 1 to 15 was measured. . And the ratio of thickness t2 (refer FIG. 3) which is the thinnest part of an irregular cross-section strip to thickness t1 (refer FIG. 3) which is the thickest part of an irregular cross-section strip was calculated | required.

  As a result of the first dimension measurement shown in FIG. 8 and FIG. 9, in Examples 1 to 15, in this case, the profile of the irregular cross-section strip with respect to the length (thickness) t1 between the upper surface portion and the lower surface of the irregular cross-section strip The ratio of the length (thickness) t2 between the bottom surface and the lower surface of the groove portion was 68% (for Example 8) or more and 84% (for Example 1) or less.

  In addition, when a deformed section strip was produced using the pre-rolling embedded member corresponding to Example 8 (material composition: 36Ni—Fe alloy, width W3: 5.00 mm, thickness t4: 5.00 mm), a deformed section The depth D (0.128 mm) of the groove portion of the strip became the largest. At this time, the length thickness t1 between the upper surface portion and the lower surface of the irregular cross-section strip material is 0.40 mm, and the length thickness t2 between the bottom surface and the lower surface of the groove section of the irregular cross-section strip material is 0.272 mm. Therefore, the ratio of the thickness t2 to the thickness t1 was 68%.

  Further, referring to Examples 5 to 9 in which the material composition (36Ni—Fe alloy) and width W3 (5.00 mm) of the embedded member before rolling are the same, the thickness t4 of the embedded member before rolling is increased to 0.50 mm ( (Example 5: 0.30 mm, Example 6: 0.35 mm, Example 7: 0.45 mm, Example 8: 0.50 mm), the depth D of the groove portion of the irregular cross-section strip increases ( Example 5: 0.100 mm, Example 6: 0.104 mm, Example 7: 0.120 mm, Example 8: 0.128 mm). That is, when the thickness t4 of the embedding member before rolling is 0.50 mm or less, there may be a simple increase relationship between the thickness t4 of the embedding member before rolling and the depth D of the groove portion of the irregular cross-section strip. found. On the other hand, when the thickness t4 of the embedded member before rolling is larger than 0.50 mm (Example 9: 0.60 mm), the increase in the depth D of the groove section of the irregular cross-section strip stops, and the groove section of the irregular cross-section strip member It was found that the depth D of the sample was small (Example 9: 0.125 mm). As a result, when the thickness t4 of the embedding member before rolling is larger than 0.50 mm, it has been found that there is no simple increase relationship between the thickness t4 of the embedding member before rolling and the depth D of the groove portion of the irregular cross-section strip.

  Further, in Example 3 and Example 5 in which the material composition (36Ni—Fe alloy) and thickness t4 (0.30 mm) of the embedded member before rolling are the same, the depth D of the groove portion of the irregular cross-section strip (Example 3: 0.099 mm, Example 5: 0.100 mm) became substantially the same value regardless of the difference in the width W3 (Example 3: 4.10 mm, Example 5: 5.00 mm) of the embedded member before rolling. . Further, in the comparison in Example 4 and Example 7 in which the material composition (36Ni—Fe alloy) and the thickness t4 (0.450 mm) of the embedding member before rolling are the same, the depth D (implementation) of the groove section of the irregular cross-section strip Example 4: 0.120 mm, Example 7: 0.120 mm) are substantially the same value regardless of the difference in the width W3 of the embedded member before rolling (Example 4: 4.10 mm, Example 7: 5.00 mm). Became. From these results, it has been found that the depth D of the groove portion of the irregular cross-section strip does not substantially depend on the width W3 of the embedded member before rolling.

Further, in Example 6 and Example 14 in which the thickness t4 (0.35 mm) of the embedding member before rolling is the same, as in Example 14, the tensile strength (600 N / mm ² ) of the embedding member before rolling is that of the base material. It is greater than the tensile strength (500N / mm ^2), the tensile strength of the pre-rolling embedded member as in example 6 and (500N / mm ²⁾ tensile strength of the base material (500N / mm ²⁾ Compared with the case where it is the same, the depth D (Example 6: 0.104 mm, Example 14: 0.098 mm) of the groove part of the irregular cross-section strip became small. On the other hand, in Example 6 and Example 11 in which the thickness t4 (0.35 mm) of the embedding member before rolling is the same, when the tensile strength of the embedding member before rolling is not substantially changed (500 N / mm ² ), the irregular cross-section strip material The depth D of the groove portion (Example 6: 0.104 mm, Example 11: 0.106 mm) was not substantially changed. From these results, it was found that when the difference between the plastic workability based on the tensile strength of the base material and the plastic workability based on the tensile strength of the embedding member before rolling increases, the depth D of the groove portion decreases. .

  From the result of the first dimension measurement described above, the metal base material and the pre-rolling embedding member disposed on the surface of the base material are cold-rolled by the rolling roller portion to embed the pre-rolling embedding member in the base material. The first to the above steps comprising the step of making the cross-sectional shape of the base material into a substantially rectangular shape (uneven shape) and the step of peeling the post-rolling embedded member embedded in the base material from the base material (deformed cross-section strip). Based on the manufacturing method of the irregular cross-section strip in the fourth embodiment, it has been found that an irregular cross-section strip having a groove formed so that the cross-sectional shape is substantially rectangular (uneven shape) can be produced. Moreover, in the irregular cross-section strip corresponding to Example 8, the depth D (0.128 mm) of the groove portion of the irregular cross-section strip was the largest, and the ratio of the thickness t2 to the thickness t1 was 68%. Thus, it has been found that it is possible to produce a deformed cross-section strip having a ratio of the thickness t2 to the thickness t1 of at least 68%.

  Further, when the difference between the plastic workability based on the tensile strength of the base material and the plastic workability based on the tensile strength of the pre-rolling embedded member was increased, the depth D of the groove portion was decreased. Thereby, when there is almost no difference between the property of the base material (plastic workability) and the property of the embedded member before rolling (plastic workability) (when the base material and the embedded member before rolling are made of the same material) It has been found that the depth D of the groove can be increased. Further, even when the difference between the property of the base material (plastic workability) and the property of the embedding member before rolling (plastic workability) is small, the depth D of the groove can be increased to some extent. found.

(Surface roughness measurement)
In the surface roughness measurement, the surface roughness of the bottom surface of the groove portion and the surface roughness of the top surface portion of the modified cross-section strip corresponding to the manufactured Example 3 and Example 5 were measured. Moreover, the surface roughness of the bottom face of the groove part of the irregular cross-section strip corresponding to the produced Example 13 and Example 15 was measured. Specifically, based on JIS B 0601-1982, the center line average roughness Ra and ten points of the bottom surface of the groove portion of the modified cross-section strip corresponding to Example 3, Example 5, Example 13 and Example 15 The average roughness Rz was measured. Further, the center line average roughness Ra and the ten-point average roughness Rz of the upper surface portion of the irregular cross-section strip corresponding to Example 3 and Example 5 were measured. Here, the measurement direction was set to a direction (Y direction in FIG. 1) parallel to the extending direction of the groove portion of the irregular cross-section strip. The measurement speed was set to 0.3 mm / s. The cut-off value at the center line average roughness Ra was set to 0.8 mm. Further, the reference length at the 10-point average roughness Rz was set to 2.5 mm.

  As a result of the surface roughness measurement shown in FIG. 10, in Example 3 and Example 5, the center line average roughness Ra of the bottom surface of the groove (Example 3: 0.59 μm, Example 5: 0.62 μm) Was larger than the center line average roughness Ra (Example 3: 0.19 μm, Example 5: 0.18 μm) of the upper surface portion. Further, the ten-point average roughness Rz (Example 3: 3.87 μm, Example 5: 3.27 μm) of the bottom surface of the groove portion is the ten-point average roughness Rz (Example 3: 0.65 μm, implementation) of the upper surface portion. Example 5: It became larger than 0.67 μm). Thereby, it turned out that the surface of the bottom face of the groove part of the irregular cross-section strip produced based on the manufacturing method of the irregular cross-section strip in the first to fourth embodiments is rougher than the surface of the upper face section.

  Further, in Example 3, Example 5, Example 13 and Example 15, the center line average roughness Ra (Example 3: 0.59 μm, Example 5: 0.62 μm, Example 13) of the bottom surface of the groove portion: 0.81 μm, Example 15: 1.42 μm) was the smallest in Example 3, increased in the order of Example 5 and Example 13, and was the largest in Example 15. Further, the ten-point average roughness Rz (Example 3: 3.87 μm, Example 5: 3.27 μm, Example 13: 4.52 μm, Example 15: 6.13 μm) of the bottom surface of the groove portion was determined in Example 5. In Example 15, Example 13 increased in order, and in Example 15, it became the largest. Thereby, in Example 3 (36Ni-Fe alloy) and Example 5 (42Ni-Fe alloy) using the pre-rolling embedded member having the same or approximate material composition as the material composition of the base material (36Ni-Fe alloy) Although the surface roughness is close to the material composition of the base material (36Ni—Fe alloy), Example 13 (Fe) and Example 15 (18Cr-8Ni) using an embedded member before rolling that is not an approximate material composition -Fe alloy (SUS304)) was found to be smaller than the surface roughness.

  From the result of the surface roughness measurement described above, the surface of the bottom surface of the groove section of the irregular cross-section strip material produced based on the method for producing the irregular cross-section strip material in the first to fourth embodiments is more than the surface of the upper surface section. It turned out to be rough. This is because, when cold rolling is performed so that the pre-rolling embedded member is embedded in the upper surface of the base material, the base material (unshaped cross-section strip) and the pre-rolling embedded member (post-rolling embedded member) are lightly pressure-bonded. The Then, when the embedded member after rolling is peeled from the irregular cross-section strip, the post-rolling embedded member that has been pressure-bonded to the irregular cross-section strip is peeled off from the irregular cross-section strip so that the bottom surface of the groove is rough. It is considered to be.

  In addition, the surface roughness when using a pre-rolling embedded member that is not a material composition approximate to the material composition of the base material is the case when using a pre-rolling embedded member having the same or approximate material composition as the base material composition It was found to be larger than the surface roughness at. This is because, when cold rolling is performed so that the pre-rolling embedded member is embedded in the upper surface of the base material, the base material (unshaped cross-section strip) and the pre-rolling embedded member (post-rolling embedded member) are lightly pressure-bonded. The At this time, when the material composition of the base material is different from the material composition of the embedded member before rolling, it is considered that the base material and the embedded member before rolling are more likely to be pressure-bonded. For this reason, when the material composition of the base material being crimped is different from the material composition of the embedding member before rolling, the embedding member after rolling that has been crimped to the irregular cross-section strip is peeled off from the irregular cross-section strip. The power gets bigger. Thereby, it is thought that the surface of the bottom face of a groove part becomes rougher.

(Second dimension measurement)
In the second dimension measurement, based on the manufacturing method of the modified cross-section strip 500 in the fifth embodiment, the common base material and the thickness t4 corresponding to Examples 16 to 19 in the table shown in FIG. 11 (FIG. 5). Reference) is 0.40 mm, the embedded member before rolling, the embedded member before rolling whose thickness t4 corresponding to Examples 20 to 23 is 0.45 mm, and the thickness t4 corresponding to Examples 24 to 26 is 0.50 mm. Using the pre-rolling embedded member, a modified cross-section strip corresponding to Examples 16 to 26 was produced.

  Specifically, using a rolling roller portion having a substantially flat outer peripheral surface, the base material made of 36Ni-Fe alloy and the pre-rolling embedded member are cooled so that the pre-rolling embedded member is embedded in the upper surface of the base material. Rolled for a while. And the irregular-shaped cross-section corresponding to Examples 16-26 was produced by peeling the embedding member from the irregular-shaped cross-section after rolling. Here, the base material was configured to have a thickness t4 (see FIG. 5) of 0.60 mm and a width in the X direction (not shown) of 21.00 mm.

  Here, the modified cross-section strips corresponding to Examples 16 to 26 have the same material composition (36Ni—Fe alloy) and the same width W3 (3.80 mm). Moreover, the embedding member before rolling in Examples 16 to 19 has the same thickness t4 (0.40 mm), and the embedding member before rolling in Examples 20 to 23 has the same thickness t4 (0.45 mm). And the embedding member before rolling in Examples 24-26 has the same thickness t4 (0.50 mm).

  By using a base material corresponding to Examples 16 to 26 and a pre-rolling embedded member, a deformed cross-section strip is prepared, thereby having a groove formed so that the cross-sectional shape is substantially rectangular (uneven shape). An irregular cross-section strip was prepared.

  In the second dimension measurement, as in the first dimension measurement, the Z-direction interval (depth) D between the bottom surface and the top surface of the groove section of the modified cross-section strip corresponding to the produced Examples 16-26. The dimensions (see FIG. 3) were measured. And the ratio of thickness t2 (refer FIG. 3) which is the thinnest part of an irregular cross-section strip to thickness t1 (refer FIG. 3) which is the thickest part of an irregular cross-section strip was calculated | required.

  As a result of the second dimension measurement shown in FIG. 11 and FIG. 12, in Examples 16 to 26, at this time, the profile of the irregular cross-section strip with respect to the length (thickness) t1 between the upper surface portion and the lower surface of the irregular cross-section strip The ratio of the length (thickness) t2 between the bottom surface and the lower surface of the groove portion was 59.4% (in the case of Example 25) or more and 68.0% (in the case of Example 16) or less.

  Moreover, when the irregular cross-section strip was produced using the pre-rolling embedded member corresponding to Example 25, the depth D (0.128 mm) of the groove portion of the irregular cross-section strip was the largest. At this time, the length thickness t1 between the top surface and the bottom surface of the irregular cross-section strip is 0.315 mm, and the length thickness t2 between the bottom surface and the bottom surface of the groove of the irregular cross-section strip is 0.187 mm. Thus, the ratio of the thickness t2 to the thickness t1 was 59.4%.

  In addition, the minimum groove depth D (0.111 mm (Example 23)) in Examples 20 to 23 in which the thickness t4 of the embedded member before rolling is 0.45 mm is 0. It became larger than the depth D (0.108 mm (Example 19)) of the largest groove part in Examples 16-19 which is 40 mm. In addition, the minimum groove depth D (0.123 mm (Example 24)) in Examples 24 to 26 in which the thickness t4 of the embedded member before rolling is 0.50 mm is 0. It became larger than the depth D (0.117 mm (Example 21)) of the largest groove part in Examples 20-23 which is 45 mm. Thereby, also in the second dimension measurement, the thickness t4 of the embedded member before rolling is increased as in the first dimension measurement (Examples 16 to 19: 0.40 mm, Examples 20 to 23: 0.45 mm, Example 24). (26: 0.50 mm), it has been found that the depth D of the groove portion of the irregular cross-section strip increases. That is, when the thickness t4 of the embedding member before rolling is 0.50 mm or less, there may be a simple increase relationship between the thickness t4 of the embedding member before rolling and the depth D of the groove portion of the irregular cross-section strip. found.

  From the result of the second dimension measurement described above, in the modified cross-section strip corresponding to Example 25, the depth D (0.128 mm) of the groove of the modified cross-section strip is the largest, and the ratio of the thickness t2 to the thickness t1 is , 59.4%. Thus, it has been found that it is possible to produce a deformed cross-section strip having a ratio of the thickness t2 to the thickness t1 of at least 59%.

  The embodiments and examples disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is shown not by the above description of the embodiments and examples but by the scope of claims for patent, and includes all modifications within the meaning and scope equivalent to the scope of claims for patent.

  For example, in the said 1st-5th embodiment, although the base material 2 showed the example comprised so that it might consist of 36Ni-Fe alloy, this invention is not limited to this. In the present invention, the substrate may be made of metal. Moreover, it is preferable that a base material consists of metals excellent in plastic workability, such as Al and Cu. When the substrate is made of Al, the pre-rolling embedded member is more preferably made of pure Al, an aluminum alloy, or the like. Moreover, when a board | substrate consists of Cu, as an embedding member before rolling, it is more preferable to consist of pure Cu, copper alloys, etc., such as oxygen free copper and phosphorus deoxidized copper.

  Moreover, in the said 1st-5th embodiment, the embedding member 4 (204, 304, 404) before rolling consists of a 36Ni-Fe alloy, 42Ni-Fe alloy, Fe, and 18Cr-8Ni-Fe alloy, respectively. Although shown, the present invention is not limited to this. For example, the embedding member before rolling may be configured to be made of a material that is not metal. However, the embedding member before rolling needs to be able to be embedded in the base material by being cold-rolled by the rolling roll portion and to be peelable from the base material.

  Moreover, in the said 1st-5th embodiment, the embedding member 4 (204, 304, 404) before rolling is at least 1 of the metallic elements contained in the 36Ni-Fe alloy which is the material composition of the base material 2 ( Although an example including Fe) is shown, the present invention is not limited to this. In the present invention, the embedding member before rolling may be configured to have a material composition that does not include any metal element contained in the material composition of the base material. For example, the base material may be made of Al and the embedding member before rolling may be made of Cu, or the base material may be made of Cu and the embedding member before rolling may be made of Al. . When the embedded member before rolling is configured to have a material composition that does not include any metal element contained in the material composition of the base material, the tensile strength of the embedded member and the tensile strength of the base material are approximate. It is preferable that the mechanical properties of the embedded member and the base material are approximate.

  Further, in the first to fifth embodiments, the pair of work rollers 5a and the pair of backup rollers 5b of the rolling roller unit 5 have substantially the same outer peripheral diameter over the entire axial direction, and the grooves Although the example which consists of a normal flat rolling roller in which No is formed was shown, this invention is not limited to this. In the present invention, the pair of work rollers and the pair of backup rollers may not have substantially the same outer peripheral surface diameter over the entire axial direction. Further, the rolling roller portion need not be a four-high rolling mill, and may be a two-high rolling mill or a 20-high rolling mill.

  Moreover, in the said 1st-5th embodiment, while the base material 2 consists of a strip | belt-shaped continuous body wound by the coil shape, the strip | belt shape by which the embedding member 4 (204, 304, 404) before rolling was wound by the coil shape was formed. Although the example which consists of these continuous bodies was shown, this invention is not limited to this. For example, the pre-rolling embedded member may be a wire. In this case, it is possible to produce a modified cross-section strip having a substantially semicircular cross-sectional shape. Further, the base material and the embedded member before rolling may not be a continuous body.

  Moreover, in the said 1st-5th embodiment, although the example which provided the one location groove part 10 in the irregular cross-section strip 1 (200, 300, 400) was shown, this invention is not limited to this. In the present invention, two or more grooves may be provided. That is, the number of groove portions is not particularly limited as long as the cross-sectional shape of the irregular cross-section strip is uneven.

  Moreover, although the said 1st-5th embodiment showed the example which provided the groove part 10 formed so that a cross-sectional shape might become a substantially rectangular shape in the irregular cross-section strip 1 (200, 300, 400), The invention is not limited to this. For example, the cross-sectional shape of the groove portion of the irregular cross-section strip may be semicircular or wedge-shaped. In addition, the cross-sectional shape of the groove part of an irregular cross-section strip can be changed with the embedding member before rolling used at the time of manufacture of an irregular cross-section strip.

  Moreover, in the said 1st and 2nd embodiment, the tensile strength of the embedding member 4 (204) before rolling is about 100% of the tensile strength of the base material 2, and in the said 3rd Embodiment, the embedding member before rolling In the fourth embodiment, the tensile strength of the embedding member 404 before rolling is about 120% of the tensile strength of the base material 2 and the tensile strength of 304 is about 90% of the tensile strength of the base material 2. Although an example has been shown, the present invention is not limited to this. In the present invention, the tensile strength of the embedded member before rolling may be 50% or more and 150% or less of the tensile strength of the substrate.

  Moreover, in the said 1st-5th embodiment, although the surface roughness of the surface of the bottom face 10a of the groove part 10 was made larger than the surface roughness of the surface of the upper surface part 11, this invention is not limited to this. . In the present invention, the surface of the upper surface portion may be rougher than the surface of the bottom surface of the groove portion.

  Moreover, in the said 1st-5th embodiment, the base material 2 extended in strip | belt shape and the embedding member 4 before rolling extended | stretched in strip | belt shape are cold-rolled by the rolling roller part 5, being conveyed continuously from the Y1 side to the Y2 side. However, the present invention is not limited to this. In the present invention, cold rolling may not be performed while being continuously conveyed, and intermittent cold rolling may be performed using a base material made of a plate material having a predetermined length and an embedded member before rolling. .

1, 200, 300, 400, 500 Profile section material 2 Base material 4, 204, 304, 404 Pre-rolling embedded member (embedded member)
5 Rolling roller section (roller section)
6 Embedded member after rolling (embedded member)
10 Groove

Claims (14)

A metal base material and an embedding member disposed on the surface of the base material are cold-rolled by a roller portion to embed the embedding member in the base material, thereby making the cross-sectional shape of the base material uneven. Process,
And a step of peeling the embedded member embedded in the base material from the base material.   The step of making the cross-sectional shape of the base material into a concavo-convex shape includes cold-rolling with the roller part while embedding both the base material and the embedded member, and embedding the embedded member in the base material. The manufacturing method of the unusual cross-section strip of Claim 1 including the process of making uneven | corrugated cross-sectional shape.   When the embedded member is peeled from the base material, the surface roughness of the base material in the portion where the embedded member is embedded is more than the surface roughness of the base material other than the portion where the embedded member is embedded. The manufacturing method of the irregular cross-section strip of Claim 1 or 2 which is large.   The step of cold rolling the base material and the embedding member with the roller portion includes the step of cold rolling the outer peripheral surface over the entire area in the axial direction of the roller portion with the roller portion and the embedding member. The manufacturing method of the irregular cross-section strip of any one of Claims 1-3 including the process of cold-rolling a member.   The step of making the cross-sectional shape of the base material into a concavo-convex shape includes continuously embedding the embedded member in the base material by cold-rolling the base material and the embedded member extending in a strip shape in the transport direction by the roller unit. The manufacturing method of the irregular cross-section strip of any one of Claims 1-4 including the process which makes the cross-sectional shape of the said base material uneven | corrugated shape by this.   The tensile strength of the embedding member is a method for producing a modified cross-section strip according to any one of claims 1 to 5, wherein the tensile strength of the base material is 50% or more and 150% or less.   The method for producing a deformed cross-section strip according to claim 6, wherein the tensile strength of the embedded member is 90% or more and 120% or less of the tensile strength of the base material.   The method for manufacturing a deformed cross-section strip according to claim 6 or 7, wherein the embedded member is made of the same material as the base material.   The method for producing a deformed cross-section strip according to claim 8, wherein the base material and the embedded member are made of a Ni-Fe alloy.   The method for producing a deformed cross-section strip according to any one of claims 1 to 7, wherein the base material is made of a Ni-Fe alloy, and the embedded member is made of Fe.   The method for producing a modified cross-section strip according to any one of claims 1 to 7, wherein the base material is made of a Ni-Fe alloy, and the embedded member is made of a Cr-Ni-Fe alloy.   The variant according to any one of claims 1 to 11, wherein the thickness of the thinnest part of the base material when the cross-sectional shape of the base material is uneven is 59% or more of the thickness of the thickest part. A method for producing a cross-section strip.   The thickness of the thinnest part of the base material when the cross-sectional shape of the base material is uneven is 59% or more and 90% or less of the thickness of the thickest part. Production method.   The step of making the cross-sectional shape of the base material into a concavo-convex shape includes cold-rolling the belt-like base material and the belt-like embedded member with the roller portion, and embedding the embedded member in the base material. The manufacturing method of the irregular cross-section strip of any one of Claims 1-13 including the process which makes the cross-sectional shape of this to uneven | corrugated shape.

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