Method for welding heterogenous system aluminum alloy through electron beams

A technology of electron beam welding and aluminum alloy, which is applied in the direction of electron beam welding equipment, welding equipment, welding equipment, etc., can solve the problems of poor weld forming quality and poor mechanical properties of joints, so as to improve the structure and performance of joints, weld seam Good molding quality and reduced unevenness

Active Publication Date: 2016-03-23
BEIJING HANGXING MACHINERY MFG CO LTD
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Problems solved by technology

[0004] The purpose of the present invention is to propose a method for electron beam welding of dissimilar aluminum alloys, which overcomes the poor quality of the weld seam and the poor quality of the joints during electron beam welding of aluminum-silicon cast aluminum alloys and aluminum-magnesium deformed aluminum alloys in the prior

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  • Method for welding heterogenous system aluminum alloy through electron beams
  • Method for welding heterogenous system aluminum alloy through electron beams

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Embodiment example

[0037] The electron beam welding machine used in the test is a CT4 electron beam welding gun produced by a French company. It is a three-stage gun with an indirect heating cathode. The cathode heating method is filament electron bombardment heating. The cathode material is tungsten and the output power is 15KW.

[0038] 1. ZL114A / 5A06 material 1mm thick structure flat plate butt welding:

[0039] The welding specifications are as follows: the joint is designed as a lock bottom butt joint form, the ZL114A side has a lock bottom 2mm, the electron beam acceleration voltage is set to 30kV, the electron beam current is 20mA, and the electron beam is located on the ZL114A side 0.1mm from the center of the weld , The welding speed is 1.2m / min, and the defocus amount is JSUR (surface focus) -0.02A.

[0040] The flat plate butt weld obtained by the above welding specifications has good shape, uniform corrugation, good gas protection, no cracks, incomplete penetration, and lack of fusion insid...

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Abstract

The invention discloses a method for welding a heterogenous system aluminum alloy through electron beams. Welding base metal is an aluminum-silicon cast aluminum alloy and an aluminum-magnesium wrought aluminum alloy. The method specifically includes the following steps of (1) joint designing, (2) preweld cleaning and assembling, (3) setting of welding parameters of the electron beams, (4) setting of injection positions of the electron beams, (5) welding, (6) modification welding and (7) postwelding cleaning. By means of the method, the welding quality is improved; the welding cost is reduced; meanwhile, the method is free of the special requirement for the environment and does not need special preweld and postwelding treatment; the welding process is easy to implement; the work efficiency is high; the method is quite wide in application prospect.

Description

Technical field [0001] The invention belongs to the technical field of high-energy beam welding, and specifically relates to a method for electron beam welding of dissimilar system aluminum alloys. Background technique [0002] Electron beam welding technology is a high-energy beam welding method that uses electron beam as the welding heat source. It is an efficient welding technology with high energy density, high precision, fast welding speed, small deformation, and less thermal damage to materials. It has been widely used at present In aerospace, automobile manufacturing and other fields. Aluminum alloy material is currently one of the most widely used metal materials in the aerospace field. Its unique properties such as large specific heat capacity and large thermal conductivity determine that a heat source with concentrated energy must be used when welding. Therefore, electron beam welding is used on aluminum alloy materials. It has received extensive attention in research ...

Claims

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Application Information

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IPC IPC(8): B23K15/10B23K37/00B23K103/10
CPCB23K15/0006B23K15/0033B23K15/10B23K2103/10
Inventor 李宏伟张鑫闫寒步贤政温志先曲宏韬陈久友王志敏
Owner BEIJING HANGXING MACHINERY MFG CO LTD
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