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Double curvature plate cold press forming method and equipment thereof

A technology of cold forming and double curvature, which is applied in the direction of forming tools, metal processing equipment, manufacturing tools, etc. It can solve the problems of thick plates, large curvature radius, and high strength, and achieve high-quality pressing and smooth curve forming shapes. Effect

Active Publication Date: 2005-11-02
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] The double-curvature plate cold-pressing forming method and device are used to make a 300-ton converter furnace shell. For the structure of the double-curvature part of the furnace shell, see 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 entire circumference of 25434 is pressed in 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 with the same material as the converter shell as the test plate. The length of the test plate is 2120, the width is 800, and the thickness is 85. The test plate with the same size as the furnace shell is used. The tool is pressed on a hydraulic press...

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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 a double-curvature plate forming technology, in particular to a method and device for cold-pressing a double-curvature plate. (2) Background technology [0002] The double-curvature plate structure is mostly used for 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, and are mostly thick and high yield limit. The low-alloy steel, the required pressing force is large. The current plate bending machine can only form a single-curvature plate, and a double-curvature plate cannot be formed on the plate bending machine, and there is currently no special pressing device for cold-pressing of a large-scale furnace shell double-curvature plate in China. (3) Contents of the invention [0003] The technical problem to be solved by the present invention is to provid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D5/02
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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