Electron beam welding method for dissimilar aluminum alloy material

A dissimilar aluminum alloy and electron beam welding technology, which is applied in the direction of electron beam welding equipment, welding equipment, welding/welding/cutting items, etc., can solve the problem of inability to realize welding of large-thickness alloy materials, single welding structure, and unfavorable wide application, etc. problem, to achieve the effect of energy concentration, smooth and beautiful weld surface, and prevention of oxidation and element burning

Active Publication Date: 2017-12-08
BEIJING HANGXING MACHINERY MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The heat input of argon arc welding is large, the deformation of the components during the welding process is large, and a large number of cracks are prone to occur. At the same time, the weld seam and the heat-affected zone will be severely softened during the welding process
Although friction stir welding can avoid the problems of pores, cracks and deformation in the welding process of aluminum alloy...

Method used

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  • Electron beam welding method for dissimilar aluminum alloy material
  • Electron beam welding method for dissimilar aluminum alloy material
  • Electron beam welding method for dissimilar aluminum alloy material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] 5mm thick 5A06 / 6005A dissimilar aluminum alloy plate butt welding. as attached figure 1 As shown, the structure of the joint is butt joint with the bottom of the lock. The model 5A06 aluminum alloy plate has a 2mm lock bottom on one side, and the model 6005A aluminum alloy plate is located on the upper side of the lock bottom.

[0053] Workpiece tack welding, each segment length 25mm, tack welding parameters: working distance 200mm, acceleration voltage 50kV, focusing current surface focus +0.03A, electron beam current 20mA, welding speed 1000mm / s.

[0054] Formal welding, welding parameters: working distance 200mm, accelerating voltage 50kV, focusing current surface focus -0.02A, electron beam current 50mA, welding speed 900mm / s.

[0055] Weld surface modification welding, welding parameters: working distance 200mm, accelerating voltage 50kV, focusing current surface focus + 0.05A, electron beam current 35mA, welding speed 1000mm / s.

[0056] Such as figure 2 As sho...

Embodiment 2

[0058] Butt welding of 7mm thick 5A06 / 6005A dissimilar aluminum alloy plates. The structure of the joint is lock bottom butt joint, the model 5A06 alloy plate has a 3mm lock bottom on one side, and the model 6005A aluminum alloy plate is located on the upper side of the lock bottom.

[0059] Workpiece tack welding, each section length 30mm, tack welding parameters: working distance 200mm, acceleration voltage 50kV, focusing current surface focus +0.03A, electron beam current 25mA, welding speed 1000mm / s.

[0060] Formal welding, welding parameters: working distance 200mm, accelerating voltage 50kV, focusing current surface focus -0.03A, electron beam current 70mA, welding speed 1000mm / s.

[0061] Weld surface modification welding, welding parameters: working distance 200mm, accelerating voltage 50kV, focusing current surface focus + 0.1A, electron beam current 35mA, welding speed 1000mm / s.

[0062] as attached image 3 As shown, the surface of the flat plate butt weld obtain...

Embodiment 3

[0064] 5mm thick 5A06 / 6005A dissimilar aluminum alloy plate butt welding. The structure of the joint is lock bottom butt joint. The model 5A06 aluminum alloy plate has a 2mm lock bottom on one side, and the model 6005A aluminum alloy plate is located on the upper side of the lock bottom.

[0065] Workpiece tack welding, each section length 20mm, tack welding parameters: working distance 200mm, acceleration voltage 50kV, focusing current surface focus +0.01A, electron beam current 30mA, welding speed 1000mm / s.

[0066] Formal welding, welding parameters: working distance 200mm, accelerating voltage 50kV, focusing current surface focus -0.01A, electron beam current 50mA, welding speed 900mm / s.

[0067] Weld surface modification welding, welding parameters: working distance 200mm, accelerating voltage 50kV, focusing current surface focus + 0.05A, electron beam current 30mA, welding speed 1000mm / s.

[0068] The surface of the flat plate butt weld obtained in this embodiment is sm...

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Abstract

The invention discloses an electron beam welding method for a dissimilar aluminum alloy material, and belongs to the technical field of welding. The method comprises the steps that 1, a welded joint is designed, wherein the welded joint adopts a lock bottom butt joint form; 2, a workpiece to be welded is formed by assembly; 3, the workpiece to be welded is placed in a vacuum chamber, and vacuumizing is carried out; 4, the track of a welded seam is subjected to teaching; 5, positioned welding is carried out on the workpiece to be welded; 6, formal welding is carried out on the workpiece to be welded, wherein the welding parameters meet the conditions that the working distance is 200mm, the acceleration voltage is 50kV, the focusing current of the surface focus is -(0.01-0.03)A, the electron beam current is 50-70mA, and the welding speed is 900-1100mm/s; and 7, modification welding is carried out on the welded seam, wherein the welding parameters meet the conditions that the working distance is 200mm, the acceleration voltage is 50kV, the focusing current of the surface focus is +(0.05-0.1)A, the electron beam current is 30-40mA. According to the method, the quality of the welded seam can be improved, and the defect of the welded seam can be reduced.

Description

technical field [0001] The invention belongs to the field of welding technology and relates to an electron beam welding method for dissimilar aluminum alloy materials. Background technique [0002] 5A06 and 6005A wrought aluminum alloys are structural materials widely used in the fields of aerospace and national defense. 5A06 aluminum alloy is an Al-Mg series anti-rust aluminum, which has the characteristics of high strength, good corrosion stability and weldability. 6005A aluminum alloy is an Al-Mg-Si series deformed aluminum alloy developed in Europe. 6005A aluminum alloy not only has medium strength, good mechanical properties, corrosion resistance and good welding performance, but also has excellent hot extrusion performance. It can be extruded into large thin-walled hollow and solid profiles with complex shapes. In the actual production of aerospace products, in order to meet different usage requirements, there are more and more needs to join 5A06 and 6005A aluminum a...

Claims

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Application Information

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IPC IPC(8): B23K15/00B23K15/06
CPCB23K15/0053B23K15/06B23K2103/10
Inventor 孙少波张鑫任金鑫陈久友李保永李宏伟
Owner BEIJING HANGXING MACHINERY MFG CO LTD
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