Method for welding automobile aluminium alloy bumper assembly
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An assembly welding method, welding method technology, applied in the direction of welding equipment, welding accessories, arc welding equipment, etc., can solve the problems of welding deformation and incomplete application, and achieve the effects of improving productivity, reducing welding defects, and improving welding accuracy
Active Publication Date: 2013-02-27
CHINA AUTOMOTIVE ENG RES INST +1
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The above methods or device pairs are all aimed at the TIG welding process and welding device of the specific welding workpiece. They are not fully applicable when used for other aluminum alloy workpieces. Various welding defects, welding deformation and other assembly defects may occur. For specific The workpiece needs to carry out the formulation of the specific welding process and the design of the device
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[0028] Combine below figure 1 , figure 2 , image 3 , Welding method embodiment and welding device further illustrate the present invention.
[0029] The present invention is composed of a beam 2, an energy-absorbing box 3 and a bracket 1, and the materials are 6061 aluminum alloy, 6063 aluminum alloy and 6005A aluminum alloy respectively, wherein the energy-absorbing box 3 and the bracket 1 are left and right respectively, and the energy-absorbing box needs to be welded 3 The contact surfaces between the beam 2 and the support 1 respectively, the joint form is a T-shaped joint, the energy-absorbing box 3 is a square tube, the cross-sectional shape is square, and the size is 90mm ╳ 90mm, the wall thickness is 2mm, its height is different, the high side is 174mm, the low side is 139mm, the outer dimension of bracket 1 is 125mm ╳ 218mm, the wall thickness is 5mm, the bending radius of beam 2 is 1332mm, the length of beam 2 is 1111mm, the cross-section is Japanese-shaped, and...
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Abstract
A method for welding an automobile aluminium alloy bumper assembly belongs to the technical field of metal welding. The automobile aluminium alloy bumper assembly consists of a beam, an energy absorption box and a support, wherein two sets of welding tools are respectively adopted to weld the automobile aluminium alloy bumper assembly step by step, firstly, the energy absorption box and the support are welded with each other, and then, the energy absorption box and the support which are welded with each other are welded with the beam. A welding device can be adjusted and positioned according to the characteristics of weldments, and the weldments are fixed, so that deformation after the welding is avoided; and an alternating current electric welding machine is adopted for manual argon tungsten-arc TIG (tungsten insert gas) welding, the technological parameters of welding wire material, welding current, welding speed, wire feed speed and the like are adjusted so as to carry out optimal matching, and the welding defects can be avoided. The method has the characteristics of flexibility and simplicity in welding equipment, convenience in operation, stability in welding, quick welding speed, low production cost, less filler wires, less welding layers, small deformation, no correction for welding, attractiveness in appearance formation, high welding quality and the like.
Description
technical field [0001] The invention relates to the field of metal welding technology and devices, in particular to a welding method for an aluminum alloy bumper assembly for automobiles. Background technique [0002] As people put forward higher requirements for energy saving, environmental protection, and safety, the application of lightweight and high-strength materials such as aluminum alloys has attracted widespread attention. Aluminum alloy has high specific strength, fracture toughness, fatigue strength and corrosion resistance stability, and good process formability and welding performance. [0003] In automobile manufacturing, in order to increase the rigidity of the automobile frame, reduce the weight of the automobile, and improve the collision performance of the automobile, aluminum alloy materials are widely used. With the use of all-aluminum body cars, welded structures such as aluminum alloy extruded profiles and thin plates play an increasingly important rol...
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