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Double curvature plate cold press forming method and equipment thereof

A cold-press forming, double-curvature technology, used in forming tools, metal processing equipment, manufacturing tools, etc., can solve the problems of sheet thickness, large radius of curvature, high strength, and achieve smooth curve forming and high-quality pressing. Effect

Active Publication Date: 2008-12-10
中国船舶集团渤海造船有限公司
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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a process method and device for cold-press forming of double-curvature plates, so as to solve the problem of cold-press forming of double-curvature plates with large curvature radius, thick plates, and high strength.

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  • Double curvature plate cold press forming method and equipment thereof
  • Double curvature plate cold press forming method and equipment thereof
  • Double curvature plate cold press forming method and equipment thereof

Examples

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Embodiment 1

[0033] A 300-ton converter shell is fabricated by using double-curvature plate cold-press forming method and device. The structure of the double-curvature part on the furnace shell is shown in Figure 7 , Figure 8 . All dimensions referred to are in millimeters. The radius of curvature of the upper mouth of the converter shell is 4050, the radius of curvature of the lower mouth is 4250, the radius of curvature of the middle part is 1500, the height is 793, and the plate thickness is 85. The circumference of the whole circle is 25434 and pressed according to the six equal parts of the whole circle. The arc length of each workpiece is 4240 and the included angle is 60°.

[0034] According to the process, first take 1 / 12 of the double-curvature plate of the same material as the converter shell as the test plate. The test plate is 2120 long, 800 wide, and 85 thick. Take a test plate of good size and use the tire with the same curvature as the furnace shell. The tool is pressed...

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Abstract

The present invention relates to double curvature plate cold pressing formation method and apparatus. The formation process includes the following steps: determining the rebound elasticity of cold pressed steel plate, determining the curvature radius and size of upper and lower working plates, setting plate material, cutting, pressing, etc. The formation apparatus includes upper pressing mold, lower pressing mold, reinforcing ribbed plates welded onto the top plate, upper working plate, lower working plate and bottom plate, and oil press. The present invention makes it possible to produce high quality double curvature plate with smooth surface.

Description

(1) Technical field [0001] The invention relates to double-curvature plate forming technology, in particular to a double-curvature plate cold-press forming method and device. (2) Background technology [0002] The double-curvature plate structure is mostly used in metallurgical furnace shells and containers with special requirements in the metallurgical industry. The plates used in this double-curvature structure should have high high-temperature strength and good creep resistance. Most of the plates are thick and have a high yield limit. Low-alloy steel, the required pressing force is large. The current bending machine can only form single-curvature plates, and double-curvature plates cannot be formed on the plate bending machine, and there is no special pressing device for cold-press forming of large-scale furnace shell double-curvature plates in China. (3) Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a pro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21D5/02B21D37/00
Inventor 谭立新马才赵宪东万璀钰郭文君
Owner 中国船舶集团渤海造船有限公司
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