Welding method of low carbon alloy structural steel gear assembly

A technology of low-carbon alloys and welding methods, applied in welding equipment, welding media, welding equipment, etc., can solve the problems of high value, complexity, and huge investment, and achieve the effect of high weld toughness, large area, and uniform heating

Active Publication Date: 2019-11-12
SHANDONG LINGONG CONSTR MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The welding method of gear assembly at home and abroad generally adopts laser welding or electron beam welding. The equipment is precise, expensive and complicated, and it mainly relies on imports, which requires a huge investment.

Method used

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  • Welding method of low carbon alloy structural steel gear assembly
  • Welding method of low carbon alloy structural steel gear assembly
  • Welding method of low carbon alloy structural steel gear assembly

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Embodiment Construction

[0027] The present invention will be further explained below in conjunction with the accompanying drawings.

[0028] A method for welding a low-carbon alloy structural steel gear assembly, comprising the following steps:

[0029] (1) Processing of groove 6

[0030] In this embodiment, the clutch housing 1 and the gear 2 are assembled using a transition fit structure, and a gear assembly is formed after welding, as shown in figure 1 and 2 shown. The mating position of the clutch housing 1 and the gear 2 is designed as a U-shaped groove 6 with a large cross-sectional area and a blunt edge 5, such as Figure 4 and 5 As shown, the root of the groove 6 is wider, the bottom is provided with a blunt edge 5, the thickness of the blunt edge 5 is 1.5mm, the arc transition radius of the bottom is R=3.0mm, the upper opening size (ie root width) is 6mm, and the groove depth is 5mm , Groove angle 20°. Described gear 2 is the internal gear of automobile gearbox.

[0031] (2) Welding o...

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Abstract

The invention discloses a welding method for a steel gear assembly with a low-carbon alloy structure, relates to the field of fusion welding for steel with an alloy structure, and aims at solving the problem of the need of a pre-welding heating step and a post-welding heat insulation step during an existing welding process for a gear assembly. According to the welding method disclosed by the invention, a U-shaped groove is designed, a mixed gas of argon gas and carbon dioxide is used as protective atmosphere, flux-cored wires are used as welding materials, and welding for the gear assembly is completed through two welding guns which are symmetrically arranged during a rotation process. The welding method disclosed by the invention is used for welding a clutch shell and a gear into the gear assembly.

Description

technical field [0001] The invention relates to the field of fusion welding of alloy structural steel, in particular to a welding method of a low-carbon alloy structural steel gear assembly for a gearbox. Background technique [0002] As we all know, in the gear manufacturing process of automobile or construction machinery gearbox, in order to reduce the difficulty of gear cold working and improve production efficiency, the gear is often divided into two independent parts for processing separately, and then the two parts are compounded together. Formed as a whole, it constitutes a compound gear, also known as a gear assembly. The two parts are generally connected by welding to form a part, and the shape of the weld is a circular weld. The welded gear assembly rotates at high speed in the gearbox, and is mainly subjected to large torsional and impact stresses. The structure of the weld seam and whether the welding is good or not are directly related to the reliability of the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K9/235B23K9/173B23K35/38
CPCB23K9/173B23K9/235B23K35/383
Inventor 郭恒博李书法李祥忠张平
Owner SHANDONG LINGONG CONSTR MACHINERY
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