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Welding method for high-strength strength weld

A technology for carrying weld seams and welding methods, applied in welding equipment, arc welding equipment, manufacturing tools, etc., can solve problems such as low service life of the rocker arm, a large number of pores, etc., to improve welding efficiency, high-strength welding, and ensure effective fusion Effect

Inactive Publication Date: 2019-01-11
SHANDONG LINGONG CONSTR MACHINERY
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AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a high-strength load-bearing seam welding method that realizes large penetration, full penetration, and less pores, and improves the service life of the rocker arm, so as to overcome the large number of pores that are easily generated after welding in the prior art, resulting in The defect of low service life of the rocker arm

Method used

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  • Welding method for high-strength strength weld
  • Welding method for high-strength strength weld
  • Welding method for high-strength strength weld

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Embodiment Construction

[0030] The present invention will be further described below in conjunction with accompanying drawing.

[0031] The high-strength load-bearing seam welding method of the present invention comprises the following steps:

[0032] The first step: group gap adjustment, such as figure 1 , figure 2 As shown, clean the impurities and oil stains on the material surface of the rocker arm 1, accurately position each material on the assembly welding mold 2, adjust the pair gap between the materials of the rocker arm 1 to ≤1mm, and then use the assembly welding tool 2 Compress and fix the materials of the rocker arm 1;

[0033] The second step: tack welding, such as figure 1 , figure 2 As shown, turn the rocker arm 1 to weld the mold 2, perform tack welding between the materials of rocker arm 1, and fix the relative position between the materials. 300mm;

[0034] The third step: bottom welding, such as figure 1 , figure 2 As shown, the rocker arm 1 is fixed on the assembly weld...

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Abstract

The invention discloses a welding method for a high-strength strength weld, and belongs to the field of welding methods. The welding method comprises the following steps: first, adjustment of an assembly gap; second, positioned welding; third, backing welding, and nonwelding of one reserved section at each of the intersection positions of short edges on two sides of a rocker rib plate; fourth, filling and cover surface welding; and fifth, welding of the intersection positions of the short edges on two sides of the rocker rib plate. Through the adoption of the welding method, welding air holesare effectively decreased, effective fusion of the weld is ensured, high-strength welding of a loader rocker is realized, the welding efficiency of the rocker is improved, and the production cost is reduced.

Description

technical field [0001] The invention belongs to a welding method, and in particular relates to a high-strength bearing weld seam welding method. Background technique [0002] The rocker arm belongs to the working device of the loader and is the key stress-bearing part in the working process of the loader. It bears alternating loads during the working process. Once the welding quality is unqualified, it is prone to fatigue fracture. Therefore, its post-welding quality is very important. Direct It is related to the performance of the whole machine. The welding of the rocker arm of the existing loader requires high skills of welding personnel. At the same time, in order to obtain high-strength welds, a welding method with large penetration depth and full penetration is adopted. The inside of the rocker arm is a cavity-closed structure. It is easy to produce a large number of air holes, resulting in low service life of the rocker arm. This problem needs to be solved urgently. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/16B23K9/02
CPCB23K9/02B23K9/16
Inventor 葛福华刘欢曹岩程中华
Owner SHANDONG LINGONG CONSTR MACHINERY
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