Heating roll-bending shaping method of metal sheet and device thereof

A technology of metal sheet and heating device, which is applied in the field of roll forming technology and equipment, can solve problems such as difficult forming, achieve the effects of reducing deformation resistance, ensuring surface quality, and saving forming processes

Active Publication Date: 2011-01-05
NORTH CHINA UNIVERSITY OF TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • 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 metal plate heating roll forming method and its device to solve the problem that metal plates such as magnesium alloy, aluminum alloy and high-strength steel are difficult to form due to work hardening. question

Method used

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  • Heating roll-bending shaping method of metal sheet and device thereof
  • Heating roll-bending shaping method of metal sheet and device thereof
  • Heating roll-bending shaping method of metal sheet and device thereof

Examples

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Effect test

Embodiment 1

[0034] Heated sheet metal 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 50mm / s, the metal plate heating roll forming device is set to be carried out in a hot nitrogen protective atmosphere, and the heating system is set to medium frequency Electromagnetic induction heater, power is 15KW, set described cooling system as laminar flow cooling device, upper spraying device (21) and lower spraying device (22) are made up of 2 rows of cooling sections respectively, each section is all provided with 5 nozzles , the diameter of the curved pipe is 20mm, the water pressure is 3KPa, and the cooling rate is 180°C / min. After the steel plate is heated by the heater, the temperature rises to 830°C within 2 minutes. After roll forming, the following Figure 4A , 4B Roll-bent sections of the cross-sectional shape shown.

Embodiment 2

[0036] Heated sheet metal roll forming device is adopted, and the forming section is as follows: Figure 4A shown. Forming a magnesium alloy plate with a thickness of 1.0mm, a width of 72.32mm, and a tensile strength of 300MPa, the forming speed is 40mm / s, and the heating type roll forming device for metal sheets is set to be carried out in a hot nitrogen protective atmosphere. The heating system is a resistance heater with a power of 20KW. The cooling system is set to be a laminar flow cooling device. The upper spray device (21) and the lower spray device (22) are respectively composed of 3 rows of cooling sections, and each section is equipped with 5 nozzles, the diameter of the curved pipe is 30mm, the water pressure is 4KPa, the cooling rate is 200°C / min, the temperature of the template rises to 800°C within 2min, and the following is obtained after roll bending Figure 4A , 4B Roll-formed profiles of the cross-sectional shape shown.

[0037] To sum up, the heating roll...

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Abstract

The invention relates to a heating roll-bending shaping method of a metal sheet, belonging to the roll-bending shaping technique and equipment field, which solves the problem of difficulty in shaping a magnesium alloy, an aluminum alloy and high-strength steel owing to work hardening. The heating roll-bending shaping method is characterized by comprising the following steps: heating the metal sheet in protective atmosphere until the sheet reaches a set temperature, carrying out roll-bending shaping on the sheet, and then cooling the shaped sheet; and finally cutting the cooled metal sheet and packing. The invention further provides a heating roll-bending shaping device for the metal sheet according to the method, which comprises a roll-bending shaping system, a computer control system, a heating system, a cooling system and a gas protection cover. By adopting the device, the metal sheet which is difficult to be shaped can be heated and then subject to roll-bending shaping, cooled and then cut into proper length. Compared with the traditional roll-bending shaping method and the device, the shaping method and the device of the invention have the advantages of less shaping passes, high economic benefit and being capable of more easily machining the metal sheet which is difficult to be shaped owing to work hardening.

Description

technical field [0001] The invention relates to a heating type roll forming method and a device thereof for a metal plate, and belongs to the field of roll forming technology and equipment. 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. Compared with hot-rolled section steel, it has the advantages of low energy and material consumption, good surface quality, high dimensional accuracy, and high relative rigidity and strength. It is an economical cross-section section with a wide range of uses. , machinery, home appliances and other industries have a very wide range of applications. [0003] At present, my country's national economy continues to develop rapidly, the market demand for roll-bending profiles is increasing day by day, the application range is expanding, and the market prospect is very broad. In ...

Claims

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Application Information

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