Vacuum electron beam welding process for square axle journal and axle pipe of support axle

A technology of vacuum electron beam welding and supporting bridge, which is applied in electron beam welding equipment, welding equipment, manufacturing tools, etc., can solve the problems of large deformation and need to be straightened, large environmental pollution, low welding strength, etc., to achieve high production efficiency, The effect of good welding performance and high welding accuracy

Active Publication Date: 2009-01-21
QINGDAO YUEK TRANSPORT EQUIP
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0003] The invention provides a vacuum electron beam welding process between the square shaft head of the support bridge and the square shaft tube, which can solve the problems of low welding strength, large deformation after welding, need for straightening, large splash and large environmental pollution in the prior art.

Method used

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  • Vacuum electron beam welding process for square axle journal and axle pipe of support axle
  • Vacuum electron beam welding process for square axle journal and axle pipe of support axle
  • Vacuum electron beam welding process for square axle journal and axle pipe of support axle

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Embodiment Construction

[0025] Firstly, after the square shaft head 3 and the square shaft tube 1 are fixed with tooling, the square shaft head 3 and the square shaft tube 1 are evenly spot welded at four points. Then use the intermediate frequency heating coil to heat the position of the welding seam to 200-250°C, and after heating for about 20-25 seconds, send the shaft head shaft tube into the vacuum chamber for vacuum electron beam welding.

[0026] Use the rotary vane mechanical pump and Roots pump to evacuate the vacuum chamber for about 120 seconds, and the vacuum degree of the vacuum chamber reaches ≥2×10 -1 Pa.

[0027] Set the welding parameters as follows: low point focus is 313mA, high point focus is 317mA, bias voltage is 1800V, filament current is 22A, electron gun high voltage is 80KV, low point beam current is 70mA, high point beam current is 90mA, welding ascending gradient 0.02 seconds, the welding descending gradient is 0.05 seconds, the workpiece rotation speed is 0.8rpm, and the...

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Abstract

The vacuum electron beam welding process for square axle journal and square axle pipe of support axle includes the following steps: fixing the axle journal and axle pipe with fixtures, heating the welding seam part with medium frequency heating coil at 200-250 deg.c for 20-25 sec, and welding with automatically focusing electron beam. The vacuum electron beam welding process of the present invention has greatly reduced welding deformation, high welding precision, high welding performance, less welding wire and welding flux consumption and less environmental pollution.

Description

technical field [0001] The invention relates to a production process for welding a square axle head and a square axle tube of an automobile support bridge. Background technique [0002] At present, the processing of the square shaft head and square shaft tube of the automobile support bridge mainly uses CO 2 Gas shielded welding or flash butt welding. Gas shielded welding has the disadvantages of large welding heat-affected zone, low welding strength, easy cracking, large deformation after welding, large spatter, large consumption of welding wire and shielding gas, etc.; flash butt welding has large power consumption and large spatter, which is harmful to Disadvantages such as large environmental pollution. Contents of the invention [0003] The invention provides a vacuum electron beam welding process for the square shaft head of the support bridge and the square shaft tube, which can solve the problems of low welding strength, large deformation after welding, need for ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K15/04B23K15/06B23K15/02
Inventor 纪爱师纪奕春胡君基张玉发梁伯江
Owner QINGDAO YUEK TRANSPORT EQUIP
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