Welding technology of bridge shell and spindle nose welding

A welding process and welding joint technology, applied in the welding process field of axle housing and shaft head welding, can solve the problems of expensive equipment, troublesome, unsuitable for small batch production, etc., and achieve the effect of ensuring the appearance of the welding seam and the welding quality.

Inactive Publication Date: 2007-07-18
NANJING AUTOMOBILE GROUP CORP
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Problems solved by technology

At present, the welding of the rear axle housing body and the axle head of the large-tonnage drive axle assembly mainly adopts electron beam welding and friction welding. Due to the expensive equipment, it is not suitable for small-batch production. For small-batch production, how to make it The requirement of welding the rear axle housing body and axle head of the large-tonnage drive axle assembly under economical conditions has always troubled people.

Method used

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  • Welding technology of bridge shell and spindle nose welding
  • Welding technology of bridge shell and spindle nose welding
  • Welding technology of bridge shell and spindle nose welding

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Embodiment Construction

[0017] As shown in Figures 1-5, the welding process for welding the axle housing and the shaft head of the present invention includes a welding joint forming process, a welding process, and a finishing process. The axle housing 1 and the shaft head described in the welding joint forming process 2. The welded joint is a Y-shaped groove, the angle α of the Y-shaped groove is 12.5-35°, the blunt edge height H is 0mm-2mm, and the gap is appropriately increased. The blunt edge width B is 3-4mm, which is effective The width of the heat-affected zone is controlled. In addition, it is also very helpful for the penetration of the weld. A liner 4 is added to the closed back end of the Y-shaped groove, and the thickness H2 of the liner 4 is 6mm to 10mm; In the above, the welding process is divided into three layers. When the first layer is welded, the position of the welding torch is properly tilted forward to ensure the depth of penetration. S Rotate 15°±3°, and the welding torch swings...

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Abstract

The present invention relates to a welding process of mixed gas protection welding (containing pulse) for welding rear-axle case and axle journal of large-tonnage drive axle. It includes welded joint forming procedure, welding procedure and collating procedure. It is characterized by that the welded joint for welding axle case and axle journal in welded joint forming procedure is an Y-shaped groove, the angle alpha of Y-shaped groove is 12.5 deg.-35 deg, the height of root face is 0 mm-2 mm, width of root face is 3-4 mm, on the closed back face end of Y-shaped groove a backing strip is added; in the welding procedure the described welding process is welding by layers, the welding line speed is 30-50 cm / min, welding voltage is 25V-40V, welding current is 280A-400A and gas flow rate is 15L / min-25L / min.

Description

Technical field [0001] The invention relates to a welding process of mixed gas shielded welding (including pulse) between a rear axle housing body and a shaft head of a large-tonnage driving axle. Background technique [0002] The rear axle housing assembly is the most critical part of the large-tonnage drive axle assembly, which bears 2 / 3 of the total mass of the vehicle, and is related to the reliability and safety of the vehicle. Among them, the welding of the rear axle housing body and the shaft head is very important. At present, the welding of the rear axle housing body and the axle head of the large-tonnage drive axle assembly mainly adopts electron beam welding and friction welding. Due to the expensive equipment, it is not suitable for small-batch production. For small-batch production, how to make it The requirement to achieve the welding of the rear axle housing body and the axle head of the large-tonnage drive axle assembly under economical conditions has been p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/095B23K9/16B23K33/00B23K35/02B23K9/022B23K9/028
Inventor 朱学军王家忠荣如松
Owner NANJING AUTOMOBILE GROUP CORP
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