Roll centre heating type roll bending forming method and device thereof

A heating, roll-bending technology, applied in forming tools, metal processing equipment, manufacturing tools, etc., can solve problems such as difficult forming, reduce the number of forming passes, solve the fracture of metal profiles, and ensure the effect of surface quality

Active Publication Date: 2011-02-16
NORTH CHINA UNIVERSITY OF TECHNOLOGY
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to overcome the above-mentioned problems existing in the prior art, the present invention aims to provide a roll core heating type roll bending method and device for metal sheets, so as to solve the problem of metal sheets such as magnesium alloys, aluminum alloys, and high-strength steels due to work hardening. hard-to-shape problem

Method used

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  • Roll centre heating type roll bending forming method and device thereof
  • Roll centre heating type roll bending forming method and device thereof
  • Roll centre heating type roll bending forming method and device thereof

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Embodiment 1

[0034] The roll center heating type roll forming device is adopted, and the forming section is as follows: Figure 4A shown. Forming DP800 ultra-high-strength steel with a thickness of 1.0mm and a width of 72.32mm, the forming speed is 20mm / s, the heating system is set to use a metal material resistance heater, and the power is 15KW, and the cooling system is set as a water cooling device , the cooling rate is 150°C / min, and the work rolls are heated in advance. After the temperature measured by the thermocouple reaches 900°C, the steel is rolled and processed. The temperature of the plate rises to 830°C within 2 minutes. After roll forming, the following is obtained: Figure 4A , 4B Hot roll-formed steel sections of the cross-sectional shape shown.

Embodiment 2

[0036] The roll center heating type roll forming device is adopted, and the forming section is as follows: Figure 4A shown. The Q235 plain carbon steel plate with a thickness of 1.0mm and a width of 72.32mm has a forming speed of 30mm / s. The heating system is set to use a metal plate resistance heater with a power of 10KW. The cooling system is set to be a hot water cooling device. , the cooling rate is 250°C / min, the work rolls are heated in advance, and when the temperature measured by the thermocouple reaches 900°C, roll bending is performed on the steel plate, and the temperature of the steel plate rises to 830°C within 2 minutes. After roll forming, the following is obtained: Figure 4A , 4B Hot roll-formed steel sections of the cross-sectional shape shown.

[0037] To sum up, the roll core heating type roll bending method and its device described in the present invention apply the heating device and the cooling device to the roll bending process, which solves the prob...

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Abstract

The invention relates to a roll centre heating type roll bending forming method of a metal plate strip, which belongs to the field of roll bending forming technologies and equipment and is used for solving the problem of difficult forming of sheet metals, such as magnesium alloy, aluminum alloy, high tension steel, and the like due to work hardening. The roll centre heating type roll bending forming method is characterized by comprising the following steps of: heating a working roll in a protective atmosphere; carrying out roll bending forming on the sheet metal by the hot working roll after the working roll is heated to required temperature; transferring heat to the sheet metal from the working roll; heating the sheet metal; cooling the sheet metal subjected to the roll bending forming; and cutting according to a set length. Furthermore, the invention also provides a roll centre heating type roll bending forming device according to the method. The device comprises a roll bending forming machine, a computer system, a heating system, a cooling system and a gas protective cover. Compared with the traditional roll bending forming device, the invention has the advantages of less forming times and high surface quality of a product; and the sheet metal which is difficultly formed is processed more easily.

Description

technical field [0001] The invention relates to a roll center heating type roll bending forming method and device for metal plates, which belongs to the field of roll forming technology and equipment, and is used to solve the problem of difficult forming of metal plates such as magnesium alloy, aluminum alloy and high-strength steel due to work hardening The problem. Background technique [0002] Roll forming is to gradually bend metal strips such as coils and strips transversely through sequentially arranged multi-pass forming rolls to make profiles with specific cross-sections. Roll-bending profiles have the characteristics of reasonable section, high strength, high rigidity, light weight, and high metal utilization rate. They are economical section profiles with a wide range of uses, and are widely used in automobiles, construction, machinery, aviation and other industries. [0003] At present, my country's national economy continues to develop rapidly, the market demand...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D37/16B21D5/14
Inventor 韩飞王在林刘继英艾正青
Owner NORTH CHINA UNIVERSITY OF TECHNOLOGY
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