WO2011150582A1

WO2011150582A1 - Continuous rolling type cold-bending forming method for stainless steel seal- water sheet

Info

Publication number: WO2011150582A1
Application number: PCT/CN2010/074816
Authority: WO
Inventors: 王圣清; 胡兆成
Original assignee: 南京万汇钢板桩有限公司
Priority date: 2010-05-31
Filing date: 2010-06-30
Publication date: 2011-12-08
Also published as: CN101954400B; CN101954400A

Abstract

A continuous rolling type cold-bending forming method for a stainless steel seal-water sheet is to obtain a roll-bending deformation by continuously rolling pass by pass, and in the deformation process a pair of rollers comprised of an upper roller and a lower roller are adopted, in cooperation with a guide vertical roller and a side vertical roller. The product obtained by the method has the following merits: good consistency and steady quality, unrestricted length of the steel sheet, reasonable setting of the right-angular change, and long service life.

Description

Continuous roll cold bending forming method for stainless steel water stop sheet

The invention relates to a method for manufacturing a profile, in particular to a method for manufacturing a stainless steel waterstop, in particular to a continuous roll cold bend forming method for a stainless steel water stop.

Background technique

As we all know, stainless steel water stop sheets are widely used in many fields of dam anti-seepage and water-stopping structure. Stainless steel corrugated water-stop sheets are 3.31 times and 17.4 times higher than traditional copper copper water-stop sheets, respectively. The elasticity of stainless steel corrugated sheets is The toughness, tensile strength and elongation are superior to those of the copper sheet; in the case of large displacement, the stainless steel corrugated waterstop has the advantages of no leakage and no cracking. At present, the traditional production method of stainless water stop film is formed by using a bending machine. This method has low production efficiency and poor repeatability. The length of the water stop piece is not affected by the maximum bending length of the bending machine. To meet the needs of large spans, when the length of the water stop is greater than the length of the maximum bending machine, the welding method must be used for splicing. The stainless steel welding is difficult, the strength is poor, and the overall performance is greatly affected. The manufacture of stainless steel waterstops is difficult, so it is difficult to promote the application of this important material. Therefore, a new processing method has been developed to ensure sufficient production efficiency, consistency and quality, and the length can be as needed. The production method of arbitrarily cut stainless steel waterstops is very important and urgent.

Summary of the invention

SUMMARY OF THE INVENTION The object of the present invention is to solve the problem of low processing efficiency and limited length of a conventional stainless steel water stop sheet, and to invent a continuous roll cold forming method of a stainless steel water stop sheet formed by cold bending technology.

The technical solution of the present invention is:

The invention relates to a continuous roll cold bending forming method for a stainless steel water stop sheet, which is characterized in that the continuous roll type cold bending forming is adopted, the roll bending deformation is continuously performed by the roll, and the upper and lower rolls are used in the deformation process. Roll forming, with the guiding vertical roller and side vertical roller.

Specifically, the continuous roll cold forming method of the stainless steel water stop sheet of the present invention includes at least The next five steps:

(1) slitting strip steel: a stainless steel strip having a thickness of 1. 0~2. 5 mm is cut along its length to obtain a stainless steel strip having a width matching the expanded width of the water stop sheet;

(2) Unwinding and leveling: the strip obtained by slitting is laid flat on the guide table;

(3) Applying a protective film: a protective film for preventing scratches during cold forming is attached to the upper and lower surfaces of the strip;

(4) Cold-bending forming: the steel strip with the protective film is finally subjected to 11 consecutive deformations to finally obtain a stainless steel water stop sheet according to the requirements, and the 11 consecutive deformations are as follows:

First, the flat strip is brought into a 24 degree angle-to-roller, and the middle portion of the strip is raised to a central angle of 24 degrees under the constraint of the angle of 24 degrees to the center;

Secondly, the above-mentioned steel strip with a 24 degree angle is smoothly inserted into the 52-degree angle-to-roller, and the middle portion of the strip is formed at an angle of 52 degrees toward the center under the constraint of the 52-degree angle-to-roller;

Thirdly, the above-mentioned strip with a 52-degree angle is smoothly fed into the 68-degree angle-to-roller, and the middle portion of the strip is formed at an angle of 68 degrees toward the center under the constraint of the 68-degree angle-to-roller;

Fourthly, the above-mentioned strip with a 68-degree angle is smoothly inserted into the 80-degree angle-to-roller, and the middle portion of the strip is formed at an angle of 80 degrees toward the center under the constraint of the 80-degree angle-to-roller;

Fifthly, the above-mentioned strip with an 80-degree angle is smoothly introduced into the 90-degree angle-to-roller, and the middle portion of the strip is bent at a 90-degree angle to the center to form a 90-degree rib at the center;

Sixth, the strip with the ribs in the middle enters the 18-degree side straight edge-to-roller, causing an angle of change of 18 degrees on both sides of the strip, while keeping the outermost side small;

Seventh, the steel strip with the 18 degree angle on both sides is inserted into the straight side of the 38 degree side, so that the two sides of the strip form an angle of 38 degrees upward while keeping the outermost side small;

Eighth, the strips with the 38 degree angles on the two sides are placed into the 56-degree side straight-side roller, so that the two sides of the strip form an angle of 56 degrees upward while keeping the outermost side small;

Ninth, the strips with the angle of 56 degrees on both sides are placed into the straight side of the 70 degree side, so that the two sides of the strip form an angle of 70 degrees upward while keeping the outermost side small;

Tenth, the steel strip with the 70 degree angle on both sides is inserted into the 80 degree side straight edge pairing roller, so that the two sides of the strip steel form an upward angle of 80 degrees, and at the same time, the outermost small side is lifted upward; Eleventh, the steel strip with the 80 degree angle on both sides is placed into the 90 degree side straight edge pairing roll, so that the two sides of the strip form an upward angle change of 90 degrees, while the outermost side is lifted. To the design value to obtain a continuous stainless steel water stop sheet that meets the requirements;

(5) The above-mentioned continuous cold-formed stainless steel water stop sheet is straightened or straightened by a straightening mechanism and sent to a cutter to cut to the design length.

The beneficial effects of the invention:

The invention changes the traditional water-stopping sheet production process and method, and can continuously produce the product according to the design requirements by continuous roll-by-turn deformation at normal temperature. It has made outstanding contributions to the anti-seepage and water-stopping technology of the joint water stop system, and has accumulated certain experience for the development of special structural steel.

The stainless steel water stop sheet manufactured by the method of the invention has good consistency, high dimensional precision, and the length of the finished product is arbitrarily long, which effectively reduces the current situation in which the product has many joints, inconsistent size and poor overall performance. The invention can make the design, production and application of the water stop film of our country reach a relatively high level, and the economic benefit and the social benefit are very remarkable.

The production efficiency of the invention is high, and the number of required rolls is small, so the production cost is reasonable and the equipment is invested less.

The invention distributes the angle change reasonably, minimizes the number of deformations, and has uniform deformation force, especially the life of each pair of rolls tends to be uniform, which not only improves the production efficiency, but also prolongs the service life of the equipment and reduces the production cost.

DRAWINGS

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a schematic view showing the structure of a stainless steel water stop sheet of the present invention.

Fig. 2 is a perspective view showing the deformation process of the first to fifth passages of the stainless steel water stop sheet of the present invention.

Fig. 3 is a perspective view showing the deformation of the sixth to eleventh paths of the stainless steel water stop of the present invention.

Fig. 4 is a schematic view showing a part of the distribution rolls in the cold-form forming process of the stainless steel water stop sheet of the present invention.

detailed description

The invention will now be further described with reference to the accompanying drawings and embodiments.

As shown in Figure 1-4.

A stainless steel water stop sheet having a generally U-shaped structure with a raised rib therebetween

1. The two plus ones each have a right-angled edge 2, and the upper part of the right-angled edge 2 is provided with a small folded edge 3 which is outwardly and upwardly. The thickness is generally 1.0 to 2.5 mm. As shown in Fig. 1, it can adopt continuous roll type cold-bending forming, which is continuously roll-by-turned by the roll, and is formed by rolling the upper and lower rolls in the process of deformation, and is matched with the guide vertical roll and the side. Vertical roller.

The specific manufacturing process is as follows:

(3) Applying a protective film: Applying a protective film to prevent the scratch during cold forming by applying a filming device to the upper and lower surfaces of the strip;

Firstly, the flat strip is placed into the 24 degree angle-to-roller, and the middle part of the strip is formed at an angle of 24 degrees toward the center under the constraint of the angle of 24 degrees from the roll; as shown in Fig. 2 _;

Secondly, the above-mentioned strip with a 24 degree angle is smoothly inserted into the 52-degree angle-to-roller, and the middle part of the strip is formed at an angle of 52 degrees toward the center under the constraint of the 52-degree angle-to-roller; 2 _;

Thirdly, the above-mentioned strip with a 52-degree angle is smoothly fed into the 68-degree angle-to-roller, and the middle portion of the strip is formed at an angle of 68 degrees toward the center under the constraint of the angle of 68 degrees from the center of the strip; Figure 2 _;

Fourthly, the above-mentioned strip with a 68-degree angle is smoothly entered into the 80-degree angle-to-roller, and the middle portion of the strip is formed at an angle of 80 degrees toward the center under the constraint of the 80-degree angle-to-roll; Figure 2 _;

Fifthly, the above-mentioned strip with an angle of 80 degrees is smoothly entered into the 90-degree angle-to-roller, and the middle portion of the strip is bent at a 90-degree angle to the center to form a 90-degree rib 1 toward the center; Figure 2 _; Sixth, the strip with the ribs in the middle enters the 18-degree side straight edge-to-roller, causing an angle of change of 18 degrees on both sides of the strip, while keeping the outermost side of the strip horizontal. As shown in Fig. 3; seventh, the steel strip with the 18 degree angle on both sides enters the 38 degree side straight edge pairing roll, so that the two sides of the strip form an angle of 38 degrees upward, while making the outermost one small Maintaining the level; as shown in Fig. 3; eighth, the strip with the 38 degree angle on both sides enters the 56 degree side straight edge pair roll, so that the two sides of the strip form an angle of 56 degrees upward, while making the outermost side a small side maintains the level; as shown in Fig. 3; ninth, the strip with the 56 degree angle on both sides enters the 70 degree side straight edge to the roll, so that the belt The two sides of the steel form an upward angle of 70 degrees, while keeping the outermost small side horizontal; as shown in Fig. 3; tenth, the steel strip with the angle of 70 degrees on both sides enters the 80 degree side straight side to the roller. , the two sides of the strip are formed upwards by an angle of 80 degrees, and the outermost side of the strip is lifted upwards; as shown in Fig. 3; eleventh, the strips with the 80 degree angles on the two sides are entered into the 90 degree side In the straight edge-to-roller, the two sides of the strip are formed to have an angle change of 90 degrees upward, and the outermost side of the strip is tilted to the design value to obtain a continuous stainless steel water stop sheet according to requirements;

A schematic view of the structure of a portion of the rolls used throughout the continuous deformation process is shown in Fig. 4. It is entirely for the designer of the art to design a desired ratio of cattle according to the requirements of the present invention.

If necessary, the processing method of the present invention further includes shaping and correction after continuous cold forming, cutting before cutting, and shaping the formed water stop sheet through a cavity mold matching the shape thereof, and the cavity mold should be considered in manufacturing. The rebound deformation of the straight side part, so it is better to design a 2-3 degree reverse deformation angle opposite to the original deformation. When the water stop piece comes out of the shaping mold and rebounds by 2-3 degrees under its own elasticity, the actual The angle is exactly the same as the design value. The correction process is to correct the distortion and flatness generated during the cold bending.

The parts not covered by the present invention are the same as the prior art or can be implemented by the prior art.

Claims

Claim

1. A continuous roll cold-bending forming method for a stainless steel water stop sheet, which is characterized in that a continuous roll type cold-bending forming is adopted, which is continuously roll-by-turned by a roll, and the upper and lower rolls are used in the process of deformation. For roll forming, the guide vertical roller and the side vertical roller are matched at the same time.

A continuous roll cold forming method for a stainless steel water stop sheet according to claim 1, characterized in that it comprises the following steps:

1) slitting strip steel: a stainless steel strip having a thickness of 1. 0~2. 5 mm is cut along its length to obtain a stainless steel strip having a width matching the expanded width of the water stop sheet;

2) Unwinding and leveling: the strip obtained by slitting is laid flat on the guide table;

3) Sticking protective film: a protective film for preventing scratching during cold forming is attached to the upper and lower surfaces of the strip;

4) Cold-bending forming: the strip coated with the protective film is finally subjected to 11 consecutive deformations to finally obtain a stainless steel water stop sheet which meets the requirements, and the 11 consecutive deformations are as follows:

Eighth, the strips with the 38-degree angle on both sides are placed into the 56-degree side straight-side roller, so that the strip The two sides of the steel form an angle of 56 degrees upward, while keeping the outermost side of the horizontal level; ninth, the strips with the angle of 56 degrees on both sides are entered into the 70 degree side straight side to the roll, so that the strip The two sides form an upward angle of 70 degrees, while keeping the outermost side of the small level horizontal;

Tenth, the steel strip with the 70 degree angle on both sides is inserted into the 80 degree side straight edge pairing roller, so that the two sides of the strip steel form an upward angle of 80 degrees, and at the same time, the outermost small side is lifted upward;

Eleventh, the steel strip with the 80 degree angle on both sides is placed into the 90 degree side straight edge pairing roll, so that the two sides of the strip form an upward angle change of 90 degrees, while the outermost side is lifted. To the design value to obtain a continuous stainless steel water stop sheet that meets the requirements;

5) The above-mentioned continuous cold-formed stainless steel water stop sheet is directly or straightened by a straightening mechanism and sent to a cutter to cut to a design length.

- 1 -