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An auxiliary stamping forming method with partial modification of welding technology

A technology of stamping forming and partial modification, which is applied in the field of stamping forming, can solve the problems of limited industrial application range, poor hardness adjustability, and low structural adaptability, and achieve the effects of increased metal hardness, high processing efficiency, and improved formability

Active Publication Date: 2017-03-01
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this type of plate has poor hardness adjustability and low adaptability to actual complex structures, which limits its industrial application range.

Method used

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  • An auxiliary stamping forming method with partial modification of welding technology

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Comparison scheme
Effect test

Embodiment 1

[0030] Adopt the present invention to prepare high-strength steel structural parts, plate 1 thickness 1mm, because the hardness of high-strength steel plate is relatively high, so it is difficult to shape the deformed corners, so the method of arc welding is used to soften the part and then stamping. The preparation method includes the following steps:

[0031] S1. Fix the plate 1 to be processed with a fixture, input the travel path program in the traveling mechanism of the welding torch 2, and move the welding torch 2 to the starting point of welding; use DC tungsten argon arc welding for welding, and set the welding parameters as follows : Welding current 60A, welding voltage 10V, tungsten electrode height 2mm, welding gun perpendicular to the surface of plate 1; then use arc welding to carry out surfacing welding on the surface of plate 1 along the predetermined track, so as to obtain weld 3 with hardness lower than plate 1, after welding is completed Release the clamp.

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Embodiment 2

[0034] Adopt the present invention to prepare aluminum alloy structural parts in annealed state, the thickness of the plate 1 is 0.5mm, because the hardness of the aluminum alloy plate is low, so the deformed part is easy to rebound, so the method of laser welding is used to make the local hardening and then stamping. The preparation method includes: Follow the steps below:

[0035] S1. Fix the plate 1 to be processed with a fixture, input the travel path program in the traveling mechanism of the welding torch 2, and move the welding torch 2 to the starting point of welding; use the laser method for welding, and set the welding parameters as follows: laser power 1200W, The defocus amount is -1mm, and the laser beam is perpendicular to the surface of the plate 1; then, laser welding is used to carry out surfacing welding on the surface of the plate 1 along the predetermined track, so as to obtain a weld 3 with a hardness higher than that of the plate 1, and release the clamp aft...

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Abstract

The invention discloses an auxiliary stamping forming method with a welding technique locally modified. The auxiliary stamping forming method is characterized by comprising the following steps that a panel to be machined is fixed through a fixture, and a welding heat source parameter is adjusted according to a preset parameter; bead weld is conducted on the surface of the panel along a preset track through a welding heat source, and the local feature of a material is changed through metallurgical reaction; the fixture is loosened after welding is completed; the welded panel is sent to stamping equipment, and the positions of weld joints on the panel correspond to the positions of a corresponding die and a pressing head; and stamping forming is conducted according to the preset technique parameter, and a plastic forming structural piece is obtained after stamping is completed. According to the auxiliary stamping forming method, through the metallurgical reaction that the welding heat source conducts thermal effect on the panel, the local property of the panel is changed, and stamping accuracy is improved, so that the forming accuracy of the structural piece is improved.

Description

technical field [0001] The invention relates to a stamping forming technology, in particular to an auxiliary stamping forming method for partial modification of welding technology. Background technique [0002] At present, in the production of industrial products such as automobiles, aircraft, machine tools and equipment, plastic forming (stamping forming, bending forming, etc.) of sheet metal is an important production method. Taking automobile manufacturing as an example, for the aesthetic design of the car body, the drawing depth of the body cover is increased, and many products will have a rib design; at the same time, in order to improve the safety of the car body and reduce the weight, a series of high-strength steels and light alloys are applied more and more common. This poses difficulties for the plastic forming of complex covers. [0003] Materials such as high-strength steel, high-strength aluminum alloy, and magnesium alloy have poor formability due to their hi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K37/00C21D9/50B21D22/02
CPCB21D22/02B23K37/00C21D9/50
Inventor 任大鑫赵坤民常颖李晓东潘敏
Owner DALIAN UNIV OF TECH
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