CN118287534B - Leveling die and leveling method for large-size ultrathin alloy foil - Google Patents
Leveling die and leveling method for large-size ultrathin alloy foil Download PDFInfo
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- CN118287534B CN118287534B CN202410718637.8A CN202410718637A CN118287534B CN 118287534 B CN118287534 B CN 118287534B CN 202410718637 A CN202410718637 A CN 202410718637A CN 118287534 B CN118287534 B CN 118287534B
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- 239000011888 foil Substances 0.000 title claims abstract description 119
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 67
- 239000000956 alloy Substances 0.000 title claims abstract description 67
- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000003825 pressing Methods 0.000 claims abstract description 135
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 11
- 239000010959 steel Substances 0.000 claims abstract description 11
- 238000010438 heat treatment Methods 0.000 claims description 28
- 238000001816 cooling Methods 0.000 claims description 13
- 238000000137 annealing Methods 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 10
- 229910000975 Carbon steel Inorganic materials 0.000 claims description 8
- 239000010962 carbon steel Substances 0.000 claims description 8
- 238000007599 discharging Methods 0.000 claims description 7
- 238000010079 rubber tapping Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000007704 transition Effects 0.000 abstract description 4
- 229910001093 Zr alloy Inorganic materials 0.000 description 8
- BUGHHNFDRCUTRM-UHFFFAOYSA-N gadolinium zirconium Chemical compound [Zr][Gd] BUGHHNFDRCUTRM-UHFFFAOYSA-N 0.000 description 8
- 238000005452 bending Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 238000005096 rolling process Methods 0.000 description 5
- 239000011162 core material Substances 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000005253 cladding Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000001956 neutron scattering Methods 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D1/00—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Press Drives And Press Lines (AREA)
Abstract
The invention provides a leveling die and a leveling method for a large-size ultrathin alloy foil, wherein the leveling die comprises: an upper platen and a bottom plate; the surface of the upper pressing plate is uniformly provided with first threaded through holes; corresponding second threaded through holes are formed in the peripheries of the upper pressing plate and the bottom plate; the periphery and the middle position of one side of the upper pressing plate and the bottom plate are welded with angle steel which is mutually connected; a secondary pressing plate, which is positioned at the lower part of the upper pressing plate; a plurality of base plates, which are positioned between the secondary pressing plate and the bottom plate; a plurality of first screws and second screws. When the leveling die is used for leveling alloy foil, a plurality of foil can be placed between every two adjacent backing plates, so that the production efficiency is improved; the alloy foil is pressed more by adopting the action of fastening bolts around and combining with jackscrews in the middle, the middle of the foil is free from floating phenomenon, and the foil is uniformly stressed; and a secondary pressing plate is placed between the upper pressing plate and the backing plate to serve as a transition correction plate, so that the large surface of the alloy foil can be uniformly stressed, and the backing plate and the foil can be prevented from being damaged due to the fact that screws directly act on the backing plate.
Description
Technical Field
The invention relates to the technical field of leveling of metal foil, in particular to a leveling die and a leveling method for a large-size ultrathin alloy foil.
Background
The neutron collimator is a core device of a neutron scattering spectrometer, the gadolinium-zirconium alloy foil is a core material of the neutron collimator, and is required to have large size (the width is more than 600mm, the length is more than 1050 mm) and ultrathin thickness (the thickness is less than or equal to 0.06 mm), and the gadolinium-zirconium alloy has low tensile strength and poor plasticity, cannot be prepared by adopting a conventional tension rolling method and can only be prepared by adopting a cladding rolling method, so that the foil stress state is complex during rolling, and the foil has the plate-shaped problems of middle waves, double waves at two sides and the like and cannot be directly applied to the neutron collimator. There is a great need to develop a leveling process study for such foils.
The current leveling method mainly comprises stretch bending straightening and heavy pressing die heat treatment pressure leveling. The stretch bending and straightening method is mainly to remove the wave form of the cold-rolled sheet by applying external force such as two-bend one-straightening and two-bend two-straightening, and the like, and the material is required to have certain tensile strength and plasticity and certain length. The foil leveled in the stretch bending and straightening mode has certain internal stress, and can generate certain rebound after being placed for a period of time, so that the re-cutting processing of a more precise complex shape is difficult; the hot-treatment leveling method for the heavy-duty die is a main leveling method for sheet nonferrous metal plates and strips at present, and mainly adopts a gravity pressing plate with high flatness to repeatedly perform leveling at a proper temperature. The scheme at present has the following problems:
(a) The gravity pressing plate is too thick, the flatness requirement is high, the manufacturing difficulty is high, the weight of the tooling is increased, the heating and heat dissipation are more difficult, and the time cost is high;
(b) When the foil to be leveled is a large-size ultrathin foil, the middle large surface cannot be stressed or is stressed unevenly, and a floating place exists in the middle, meanwhile, as the foil is of double-zero-level thickness, the deformation is more serious when heated, and if the foil is not uniformly stressed and kept to be at a low temperature, the shape of the foil is worse.
Therefore, the hot-pressing die heat treatment press leveling scheme has a certain effect on thick materials, but cannot level large-size ultrathin foils.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a leveling die and a leveling method for large-size and ultrathin alloy foil so as to realize the purpose of leveling the large-size and ultrathin metal foil.
The specific invention comprises the following steps:
In a first aspect, the present invention provides a leveling die for a large-size, ultra-thin alloy foil, comprising: an upper platen and a bottom plate; a plurality of first threaded through holes are uniformly distributed on the surface of the upper pressing plate; corresponding second threaded through holes are formed in the peripheries of the upper pressing plate and the bottom plate; the periphery of one side, far away from the bottom plate, of the upper pressing plate is welded with angle steel which is mutually connected; the periphery of one side of the bottom plate far away from the upper pressing plate and the middle position are welded with angle steel which are mutually connected;
The secondary pressing plate is positioned at the lower part of the upper pressing plate;
The backing plates are positioned between the secondary pressing plate and the bottom plate, and the adjacent two backing plates are used for placing alloy foil;
a plurality of first screws and second screws;
the first screw is matched with the first threaded through hole, and the length of the first screw rod is larger than the depth of the first threaded through hole;
The second screw is matched with the second threaded through hole, and the length of the second screw is larger than the total theoretical thickness of the upper pressing plate, the secondary pressing plate, the base plate, the alloy foil and the bottom plate.
Optionally, the number of the backing plates is between 2 and 500 sheets;
the number of alloy foils placed between two adjacent backing plates is not more than 5.
Optionally, the upper platen and the bottom plate have the same size, and the dimensions of the backing plate and the sub-platen are smaller than those of the upper platen and the bottom plate.
Optionally, the upper pressing plate, the secondary pressing plate and the bottom plate are all made of ground carbon steel plates;
The backing plate is made of cold-rolled carbon steel plates.
Optionally, the thickness of the upper pressing plate is 10-15 mm;
the thickness of the secondary pressing plate is 3-5mm;
the thickness of the backing plate is 0.5-1mm;
The thickness of the bottom plate is between 10 and 15 mm.
Optionally, the number of the first threaded through holes is between 40 and 70;
The number of the second threaded through holes is between 30 and 50.
In a second aspect, the present invention provides a method for leveling a large-sized ultrathin alloy foil, which is suitable for the leveling die in the first aspect, and includes:
S1: placing a backing plate on the plane of the bottom plate;
s2: placing 1-5 Zhang Gejin foil materials on the backing plates, and covering 1 backing plate on the alloy foil materials;
s3: repeating the step S2 for 0-500 times;
S4: placing a secondary pressing plate on the uppermost backing plate, and placing an upper pressing plate on the secondary pressing plate;
s5: aligning second threaded through holes around the bottom plate and the upper pressing plate, and screwing second screws into each second threaded through hole to enable the distance between the upper pressing plate and the bottom plate to be consistent with the total theoretical thickness of the secondary pressing plate, the backing plate and the alloy foil;
s6: a first screw is screwed into each first threaded through hole in sequence, so that the head of the screw rod of the first screw is screwed into contact with the secondary pressing plate;
S7: transferring the tooling after the S6 is completed into a vacuum annealing furnace, performing annealing treatment at 300-500 ℃, discharging after cooling along with the furnace, and opening the tooling to obtain the leveled large-size ultrathin alloy foil.
Optionally, the annealing treatment at 300-550 ℃ comprises:
heating to 300-400 ℃ at a heating rate of 5 ℃/min, and preserving heat for 2-3 hours;
then heating to 450-550 ℃ at a heating rate of 3-5 ℃/min, and preserving heat for 1-3 hours.
Optionally, discharging the furnace after cooling the furnace, and opening the tool comprises: and cooling to below 80 ℃ along with the furnace, discharging, cooling to room temperature in the atmosphere, and opening the tool.
Optionally, the unevenness of the leveled large-size ultrathin alloy foil is less than or equal to 100 mu m/m.
Compared with the prior art, the invention has the following advantages:
The invention provides a leveling die for a large-size ultrathin alloy foil, which comprises the following components: an upper platen and a bottom plate; a plurality of first threaded through holes are uniformly distributed on the surface of the upper pressing plate; corresponding second threaded through holes are formed in the peripheries of the upper pressing plate and the bottom plate; the periphery and the middle position of one side of the upper pressing plate far away from the bottom plate are welded with angle steel which are mutually connected; the periphery and the middle position of one side of the bottom plate far away from the upper pressing plate are welded with angle steel which are mutually connected; a secondary pressing plate, which is positioned at the lower part of the upper pressing plate; the backing plates are positioned between the secondary pressing plate and the bottom plate, and the adjacent two backing plates are used for placing alloy foil; a plurality of first screws and second screws. According to the invention, the ground flat carbon steel plate with low cost and thinner thickness is used as the bottom plate and the upper pressing plate, and the welding angle steel is added at the periphery and the middle position, so that the strength of the pressing plate is ensured, the weight of the whole die is reduced, the heat conduction is facilitated, the deformation is avoided when the die is repeatedly used, and the time and the economic cost are effectively reduced; the second threaded through holes which are uniformly distributed are formed in the periphery of the upper pressing plate and the periphery of the bottom plate, so that the dies can be fastened in a bolt connection mode, and the pressure applied to the foil and the backing plate is increased, so that the upper pressing plate does not need to use a thick plate (the traditional upper pressing plate is more uniformly stressed in a thick plate mode), and a device for applying pressure to the dies does not need to be additionally arranged; through with first screw in the first screw thread through-hole of upper pressure plate middle part evenly distributed, screw head screw to with inferior pressure plate contact, act on inferior pressure plate through the jackscrew, effectually solved the big face atress of ultra-thin foil inhomogeneous, there is the problem that floats the empty pressure in the centre, improved the roughness of the ultra-thin foil of jumbo size greatly.
According to the leveling method for the large-size ultrathin alloy foil, a plurality of foils can be placed between every two adjacent backing plates, so that the production efficiency is improved; the alloy foil is pressed more by adopting the action of fastening bolts around and combining with jackscrews in the middle, the middle of the foil is free from floating phenomenon, and the foil is uniformly stressed; in the invention, the secondary pressing plate is placed between the upper pressing plate and the backing plate to serve as a transition correction plate, so that the large surface of the alloy foil can be uniformly stressed, and the backing plate and the foil can be prevented from being damaged due to the fact that the screw directly acts on the backing plate; compared with cold stretch bending straightening, the leveling method is suitable for hot leveling, and effectively removes rolling stress of alloy foil.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 shows a schematic diagram of a leveling mold according to an embodiment of the present invention;
fig. 2 shows a schematic structural view of an upper platen according to an embodiment of the present invention;
FIG. 3 shows a schematic structural diagram of a base plate according to an embodiment of the present invention;
FIG. 4 shows a flow chart of a method for leveling a large-size ultrathin alloy foil provided by an embodiment of the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses. Any product that is the same as or similar to the present invention, which anyone in the light of the present invention or combines the present invention with other prior art features, falls within the scope of the present invention based on the embodiments of the present invention. And all other embodiments that may be made by those of ordinary skill in the art without undue burden and without departing from the scope of the invention.
Specific experimental steps or conditions are not noted in the examples and may be performed in accordance with the operation or conditions of conventional experimental steps described in the prior art in the field. The reagents used, as well as other instruments, are conventional reagent products available commercially, without the manufacturer's knowledge. Furthermore, the drawings are merely schematic illustrations of embodiments of the invention and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus a repetitive description thereof will be omitted. Some of the block diagrams shown in the figures are functional entities and do not necessarily correspond to physically or logically separate entities.
Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.
In the description of the present invention, it should be understood that the terms "first," "second," and the like are used for defining the components, and are merely for convenience in distinguishing the corresponding components, and the terms are not meant to have any special meaning unless otherwise indicated, so that the scope of the present invention is not to be construed as being limited.
In addition, the technical features of the different embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
The specific implementation content of the invention is as follows:
In a first aspect, the present invention provides a leveling mold for a large-size ultrathin alloy foil, fig. 1 shows a schematic structural diagram of the leveling mold provided by the embodiment of the present invention, and as shown in fig. 1, the leveling mold sequentially includes, from top to bottom: the upper pressing plate 1, the secondary pressing plate 2, a plurality of backing plates 3, a bottom plate 4, a plurality of first screws and a plurality of second screws, wherein the structural schematic diagram of the upper pressing plate 1 is shown in fig. 2, and second threaded through holes 1-1 are formed in the periphery of the upper pressing plate 1 as shown in fig. 2; referring to fig. 3, as shown in fig. 3, the second threaded through holes 1-1 are also formed around the bottom plate 4, the positions of the second threaded through holes 1-1 on the bottom plate 4 are in one-to-one correspondence with the second threaded through holes 1-1 formed around the upper pressing plate 1, and the number of the second threaded through holes 1-1 on the upper pressing plate 1 and the bottom plate 4 is between 30 and 50. The upper pressing plate 1 and the bottom plate 4 are connected through the second screws, so that bolt fastening is realized, the pressure applied to the alloy foil is increased, the upper pressing plate does not need to use a thick plate (the traditional upper pressing plate is stressed more uniformly in a thick plate mode), and a device for applying pressure to a die is not required to be additionally arranged.
Referring to fig. 1, a secondary pressing plate 2 is arranged below an upper pressing plate 1, and is used as a transition correction plate, and the secondary pressing plate 2 is arranged to uniformly stress a large surface of an alloy foil and prevent the pad and the foil from being damaged due to the fact that a first screw directly acts on the pad; the backing plates 3 are positioned between the secondary pressing plate 2 and the bottom plate 4, the number of the backing plates 3 is at least two, namely, alloy foil 5 to be leveled is placed between every two backing plates 3, the number of the alloy foil 5 to be leveled is not more than 5 between every two backing plates 3, the arrangement of the backing plates 3 effectively ensures the stress uniformity of the alloy foil 5, and meanwhile, in the process of leveling the alloy foil 5 in a large batch, the more the number of the backing plates 3 is, the more the number of the alloy foil 5 can be leveled at the same time; the number of the setting sheets of the backing plates 3 can be within 500, and the bonding caused by the compression of the alloy foil 5 can be effectively avoided by laminating the setting backing plates 3.
Referring to fig. 2, the middle part of the upper pressing plate 1 is also uniformly provided with first threaded through holes 1-2, and the number of the first threaded through holes is 40-70; the first threaded through holes 1-2 are matched with the first screws, the first screws are screwed into the first threaded through holes 1-2 uniformly distributed in the middle of the upper pressing plate, the heads of the screws are screwed to be in contact with the secondary pressing plate 2, and the jackscrews act on the secondary pressing plate 2, so that the problems of uneven stress on the large surface of the ultrathin foil and unsmooth floating and pressing in the middle are effectively solved, and the flatness of the large-size ultrathin foil is greatly improved; the middle part of the bottom plate 4 is a complete flat surface without through holes.
With continued reference to fig. 2 and 3, the invention adopts a low-cost and thinner ground carbon steel plate to prepare the upper pressing plate 1 and the bottom plate 4, wherein the upper pressing plate 1 and the bottom plate 4 have the same size, the width is not less than 800 mm, and the length is not less than 1250 mm; the upper pressing plate 1 is not contacted with the secondary pressing plate 2, the cross-connected angle steel 14-1 is welded at the periphery and the middle position of the side, which is not contacted with the backing plate 3, of the bottom plate 4, the surrounding area formed by the crossed angle steel 14-1 is square, the side length is not more than 80 mm, the arrangement of the angle steel 14-1 ensures the strength of the upper pressing plate 1 and the bottom plate 4, and reduces the weight of the whole die, wherein the thickness of the upper pressing plate 1 is 10-15 mm, the thickness of the bottom plate 4 is 10-15 mm, the heat conduction is facilitated, the deformation is avoided when the die is repeatedly used, and the time and the economic cost are effectively reduced.
In the implementation, the length of the screw rod of the first screw needs to be larger than the depth of the first threaded through hole so that the top of the screw rod of the first screw can be contacted with the secondary pressing plate 2 and tightly pressed; the length of the second screw rod is required to be larger than the total theoretical thickness of the upper pressing plate, the secondary pressing plate, the base plate, the alloy foil and the bottom plate so as to ensure that the upper pressing plate 1 and the bottom plate 4 are fastened through the second screw rod; so that the alloy foil positioned between the backing plates is uniformly stressed.
In the concrete implementation, the secondary pressing plate 2 is made of a ground carbon steel plate, the backing plate 3 is made of a cold-rolled carbon steel plate, the secondary pressing plate 2 and the backing plate 3 have the same size, the sizes of the secondary pressing plate 2 and the backing plate 3 are smaller than those of the upper pressing plate 1 and the bottom plate 4, and the thickness of the secondary pressing plate 2 is 3-5mm; the thickness of the backing plate 3 is between 0.5 and 1mm.
In a second aspect, the present invention provides a method for leveling a large-size and ultrathin alloy foil, which is suitable for the leveling die in the first aspect, and fig. 4 shows a flowchart of a method for leveling a large-size and ultrathin alloy foil provided by an embodiment of the present invention, and as shown in fig. 4, the leveling method specifically includes the following processing steps:
S1: placing a backing plate on the plane of the bottom plate;
S2: placing 1-5 Zhang Gejin foil materials on the backing plate, and covering 1 backing plate on the alloy foil materials;
s3: repeating the step S2 for 0-500 times;
S4: placing a secondary pressing plate on the uppermost backing plate, and placing an upper pressing plate on the secondary pressing plate;
s5: aligning the second threaded through holes on the periphery of the bottom plate and the upper pressing plate, screwing a second screw into each second threaded through hole, and enabling the distance between the upper pressing plate and the bottom plate to be consistent with the total theoretical thickness of the secondary pressing plate, the backing plate and the alloy foil;
S6: a first screw is screwed into each first threaded through hole in sequence, so that the head of the screw rod of the first screw is screwed into contact with the secondary pressing plate;
S7: transferring the tooling after the S6 is completed into a vacuum annealing furnace, performing annealing treatment at 300-500 ℃, discharging after cooling along with the furnace, and opening the tooling to obtain the leveled large-size ultrathin alloy foil.
In some embodiments, the annealing treatment is performed in a gradient heating mode, and specifically includes: heating to 300-400 ℃ at a heating rate of 5 ℃/min, and preserving heat for 2-3 hours; and then continuously heating to 450-550 ℃ at the heating rate of 3-5 ℃/min, preserving heat for 1-3 hours, cooling along with the furnace, and discharging from the furnace. In order to prevent the alloy foil from deforming, the alloy foil is discharged from the furnace after being cooled to below 80 ℃ along with the furnace, and is continuously cooled to room temperature in the atmosphere, a screw is unscrewed to open the tool, the alloy foil is taken out, and the obtained leveled large-size ultrathin alloy foil has the unevenness less than or equal to 100 mu m/m.
According to the leveling method for the large-size ultrathin alloy foil, a plurality of foils can be placed between every two adjacent backing plates, so that the production efficiency is improved; the alloy foil is pressed more by adopting the action of fastening bolts around and combining with jackscrews in the middle, the middle of the foil is free from floating phenomenon, and the foil is uniformly stressed; in the invention, the secondary pressing plate is placed between the upper pressing plate and the backing plate to serve as a transition correction plate, so that the large surface of the alloy foil can be uniformly stressed, and the backing plate and the foil can be prevented from being damaged due to the fact that the screw directly acts on the backing plate; compared with cold stretch bending straightening, the leveling method is suitable for hot leveling, and effectively removes rolling stress of alloy foil.
In order to make the present invention more clearly understood by those skilled in the art, a leveling mold and a leveling method for a large-sized and ultra-thin alloy foil according to the present invention will be described in detail with reference to the following examples.
The leveling mold used is referred to as a leveling mold schematic shown in fig. 1.
Example 1:
placing the base plate 4 on a plane, and placing a backing plate 3 (thickness 0.5 mm) on the base plate 4;
placing 1 gadolinium-zirconium alloy foil 5 (with the thickness of 0.06 mm) on the backing plate 3, and covering 1 backing plate 3 on the alloy foil 5;
Taking 1 alloy foil 5 and 1 backing plate 3 as a layer, repeatedly placing in sequence, placing 100 layers in total, placing a secondary pressing plate 3 (thickness of 3 mm) on the uppermost backing plate 3, and placing an upper pressing plate on the secondary pressing plate 2. The theoretical distance between the upper platen 1 and the bottom plate 4 was 59.5mm.
The threaded through holes of the bottom plate 4 and the upper pressing plate 1 are aligned, the screws are adopted to screw the four sides, the height difference between the upper pressing plate 1 and the bottom plate 4 is measured, 5 points are measured in the length direction, three points are measured in the width direction, and the height difference is 59.5mm and is consistent with the theoretical distance between the upper pressing plate and the bottom plate.
All (53) threaded through holes in the middle are sequentially propped up by M12X 40mm screws, the heads of the screws are screwed to be in contact with the secondary pressing plate 2, the unscrewed height of the screws is the thickness of the upper pressing plate 1, the length of the unthreaded screws is measured, and the unthreaded heights of the 53 screws are 28mm.
Hanging the tool into a vacuum annealing furnace, heating to 300 ℃, and preserving heat for 1 hour at a heating rate of 5 ℃/min; and then continuously heating to 480 ℃ and preserving heat for 2 hours, wherein the heating rate is 3 ℃/min, cooling to below 80 ℃ along with the furnace, and closing the vacuum furnace outlet.
In order to prevent the foil from deforming, after the foil is cooled to room temperature in the atmosphere, the screw is unscrewed to open the tool, and the large-size ultrathin gadolinium-zirconium alloy foil with good flatness is obtained, wherein the unevenness of the foil is less than or equal to 100 mu m/m.
10% Of the foil is randomly taken for unevenness detection, and the result is as follows: 80 μm/m, 75 μm/m, 85 μm/m, 95 μm/m, 90 μm/m, 80 μm/m, 85 μm/m, 90 μm/m.
Example 2:
The base plate 4 was placed on a flat surface, and a pad 3 (thickness 0.5 mm) was placed on the base plate 4.
3 Gadolinium-zirconium alloy foils 5 (thickness 0.06 mm) are placed on the backing plate 3, and then 1 backing plate 3 is covered on the alloy foils 5.
With 3 alloy foils 5 and 1 backing plate 3 as a layer, placing repeatedly in sequence, placing 250 layers in total, placing a secondary pressing plate 3 (thickness 3 mm) on the uppermost backing plate 3, and placing an upper pressing plate on the secondary pressing plate 2. The theoretical distance between the upper press plate 1 and the bottom plate 4 is 173.5 mm.
The through holes of the bottom plate 4 and the upper pressing plate 1 are aligned, the screws are adopted to screw the four sides, the height difference between the upper pressing plate 1 and the bottom plate 4 is measured, 5 points are measured in the length direction, three points are measured in the width direction, and the height difference is 173.5mm and is consistent with the theoretical distance between the upper pressing plate 1 and the bottom plate 4.
And the screws with M12 multiplied by 40mm are sequentially propped against the middle threaded holes, the heads of the screws are screwed to be in contact with the secondary pressing plate 2, the unscrewed heights of the screws are the thickness of the upper pressing plate 1, the lengths of the screws which are not screwed in are measured, and the unscrewed heights of the 53 screws are 28mm.
Hanging the tool into a vacuum annealing furnace, heating to 300 ℃, and preserving heat for 2 hours at a heating rate of 5 ℃/min; and then continuously heating to 480 ℃ and preserving heat for 3 hours, wherein the heating rate is 3 ℃/min, cooling to below 80 ℃ along with the furnace, and closing the vacuum furnace outlet.
In order to prevent the foil from deforming, after the foil is cooled to room temperature in the atmosphere, the screw is unscrewed to open the tool, and the large-size ultrathin gadolinium-zirconium alloy foil with good flatness is obtained, wherein the unevenness of the foil is less than or equal to 100 mu m/m.
10% Of the foil is randomly taken for unevenness detection, and the result is as follows: 85 μm/m, 90 μm/m, 92 μm/m, 96 μm/m, 98 μm/m, 87 μm/m, 80 μm/m, 82 μm/m, 90 μm/m.
Example 3:
The base plate 4 was placed on a flat surface, and a pad 3 (thickness 0.5 mm) was placed on the base plate 4.
5 Gadolinium-zirconium alloy foils 5 (thickness 0.06 mm) are placed on the backing plate 3, and then 1 backing plate 3 is covered on the alloy foils 5.
The method comprises the steps of taking 5 alloy foils 5 and 1 backing plate 3 as one layer, sequentially and repeatedly placing 400 layers, placing a secondary pressing plate 3 (thickness 3 mm) on the uppermost backing plate 3, and placing an upper pressing plate on the secondary pressing plate 2. The theoretical distance between the upper platen 1 and the bottom plate 4 is 323.5.5 mm.
The through holes of the bottom plate 4 and the upper pressing plate 1 are aligned, the screws are adopted to screw the four sides, the height difference between the upper pressing plate 1 and the bottom plate 4 is measured, 5 points are measured in the length direction, three points are measured in the width direction, and the height difference is 323.5mm and is consistent with the theoretical distance between the upper pressing plate 1 and the bottom plate 4.
And the screws with M12 multiplied by 40mm are sequentially propped against the middle threaded holes, the heads of the screws are screwed to be in contact with the secondary pressing plate 2, the unscrewed heights of the screws are the thickness of the upper pressing plate 1, the lengths of the screws which are not screwed in are measured, and the unscrewed heights of the 53 screws are 28mm.
Hanging the tool into a vacuum annealing furnace, heating to 300 ℃, and preserving heat for 3 hours at a heating rate of 5 ℃/min; and then continuously heating to 480 ℃ and preserving heat for 4 hours, wherein the heating rate is 3 ℃/min, cooling to below 80 ℃ along with the furnace, and closing the vacuum furnace outlet.
In order to prevent the foil from deforming, after the foil is cooled to room temperature in the atmosphere, the screw is unscrewed to open the tool, and the large-size ultrathin gadolinium-zirconium alloy foil with good flatness is obtained, wherein the unevenness of the foil is less than or equal to 100 mu m/m.
10% Of the foil is randomly taken for unevenness detection, and the result is as follows: 95 μm/m, 80 μm/m, 90 μm/m, 98 μm/m, 88 μm/m, 85 μm/m, 75 μm/m, 80 μm/m, 92 μm/m.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, one skilled in the art can combine and combine the different embodiments or examples described in this specification.
For the purposes of simplicity of explanation, the methodologies are shown as a series of acts, but one of ordinary skill in the art will recognize that the present invention is not limited by the order of acts described, as some acts may, in accordance with the present invention, occur in other orders and concurrently. Further, those skilled in the art will recognize that the embodiments described in the specification are all of the preferred embodiments, and that the acts and components referred to are not necessarily required by the present invention.
The present invention has been described in detail with reference to a large-sized, ultra-thin alloy foil leveling mold and leveling method, and specific examples are applied herein to illustrate the principles and embodiments of the present invention, and the above examples are only for aiding in understanding the method and core idea of the present invention; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in accordance with the ideas of the present invention, the present description should not be construed as limiting the present invention in view of the above.
Claims (7)
1. A leveling die for a large-size, ultra-thin alloy foil, comprising: an upper platen and a bottom plate; a plurality of first threaded through holes are uniformly distributed on the surface of the upper pressing plate; corresponding second threaded through holes are formed in the peripheries of the upper pressing plate and the bottom plate; the periphery of one side, far away from the bottom plate, of the upper pressing plate is welded with angle steel which is mutually connected; the periphery of one side of the bottom plate far away from the upper pressing plate and the middle position are welded with angle steel which are mutually connected;
The secondary pressing plate is positioned at the lower part of the upper pressing plate;
The backing plates are positioned between the secondary pressing plate and the bottom plate, and the adjacent two backing plates are used for placing alloy foil;
A plurality of first screws and second screws;
The first screw is matched with the first threaded through hole, the length of the first screw is larger than the depth of the first threaded through hole, and the screw head of the first screw is screwed to be in contact with the secondary pressing plate so as to avoid floating in the middle of the alloy foil during alignment;
the second screw is matched with the second threaded through hole, the length of the second screw is larger than the total theoretical thickness of the upper pressing plate, the secondary pressing plate, the base plate, the alloy foil and the base plate, the upper pressing plate and the base plate are fastened through the second screw bolt, and pressure is applied to level the alloy foil;
the upper pressing plate, the secondary pressing plate and the bottom plate are all made of ground carbon steel plates;
the backing plate is made of cold-rolled carbon steel plates;
The thickness of the upper pressing plate is 10-15 mm;
the thickness of the secondary pressing plate is 3-5mm;
the thickness of the backing plate is 0.5-1mm;
the thickness of the bottom plate is between 10 and 15 mm;
the process for leveling the alloy foil by adopting the leveling die comprises the following steps:
S1: placing a backing plate on the plane of the bottom plate;
s2: placing 1-5 Zhang Gejin foil materials on the backing plates, and covering 1 backing plate on the alloy foil materials;
s3: repeating the step S2 for 0-500 times;
S4: placing a secondary pressing plate on the uppermost backing plate, and placing an upper pressing plate on the secondary pressing plate;
s5: aligning second threaded through holes around the bottom plate and the upper pressing plate, and screwing second screws into each second threaded through hole to enable the distance between the upper pressing plate and the bottom plate to be consistent with the total theoretical thickness of the secondary pressing plate, the backing plate and the alloy foil;
s6: a first screw is screwed into each first threaded through hole in sequence, so that the head of the screw rod of the first screw is screwed into contact with the secondary pressing plate;
S7: transferring the tooling after the S6 is completed into a vacuum annealing furnace, carrying out annealing treatment at 300-550 ℃, discharging after cooling along with the furnace, and opening the tooling to obtain the leveled large-size ultrathin alloy foil.
2. The leveling mold according to claim 1, wherein the number of the pad plates is between 2 and 500 sheets;
the number of alloy foils placed between two adjacent backing plates is not more than 5.
3. The leveling mold as in claim 1 wherein the upper platen and the base plate have the same dimensional size and the secondary platen and the backing plate have the same dimensional size, the dimensions of the backing plate and the secondary platen being smaller than the dimensions of the upper platen and the base plate.
4. The leveling die of claim 1, wherein the number of first threaded through holes is between 40-70;
The number of the second threaded through holes is between 30 and 50.
5. The leveling mold of claim 1, wherein the annealing at 300-550 ℃ comprises:
heating to 300-400 ℃ at a heating rate of 5 ℃/min, and preserving heat for 2-3 hours;
then heating to 450-550 ℃ at a heating rate of 3-5 ℃/min, and preserving heat for 1-3 hours.
6. The leveling mold of claim 1, wherein the furnace cooling and tapping, opening the tooling comprises: and cooling to below 80 ℃ along with the furnace, discharging, cooling to room temperature in the atmosphere, and opening the tool.
7. The leveling die of claim 1, wherein the leveled large-size, ultra-thin alloy foil has a flatness of less than or equal to 100 μm/m.
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| CN102029724A (en) * | 2010-10-24 | 2011-04-27 | 西安超码科技有限公司 | Compression moulding device and method of flat product |
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| CN212705152U (en) * | 2020-04-30 | 2021-03-16 | 南京吉纳焊接技术有限公司 | Pressurization anchor clamps suitable for diffusion welding |
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| IE62499B1 (en) * | 1988-01-13 | 1995-02-08 | Fawndale Ltd | Apparatus and method for fixing self-clinching fastener means |
| KR100819601B1 (en) * | 2006-11-15 | 2008-04-04 | 지에스칼텍스 주식회사 | Stack fastening device for polymer electrolyte fuel cell |
| CN202366997U (en) * | 2011-12-13 | 2012-08-08 | 湖北三江航天万山特种车辆有限公司 | Irregular-part leveling device |
| CN208944864U (en) * | 2018-10-08 | 2019-06-07 | 湖南航天机电设备与特种材料研究所 | A kind of device for thin plate school shape |
| CN214816073U (en) * | 2020-12-16 | 2021-11-23 | 中航富士达科技股份有限公司 | Welding fixture for antenna array surface |
| CN214348743U (en) * | 2020-12-25 | 2021-10-08 | 云南正成工精密机械有限公司 | Tool for correcting machined steel plate |
| CN117753823A (en) * | 2023-12-11 | 2024-03-26 | 有研金属复材技术有限公司 | Continuous heat treatment and leveling treatment method for ultrathin aluminum-based composite material plate |
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|---|---|---|---|---|
| CN102029724A (en) * | 2010-10-24 | 2011-04-27 | 西安超码科技有限公司 | Compression moulding device and method of flat product |
| CN206661969U (en) * | 2017-04-10 | 2017-11-24 | 赣州伟嘉合金有限责任公司 | A kind of tungsten panel leveling fixture |
| CN212705152U (en) * | 2020-04-30 | 2021-03-16 | 南京吉纳焊接技术有限公司 | Pressurization anchor clamps suitable for diffusion welding |
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