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Welding technique of electric resistance welding and stud welding of unmatched materials

A welding technology, resistance welding technology, applied in the direction of resistance welding equipment, welding equipment, arc welding equipment, etc., can solve the problems of low metal resistance, inability to weld, mismatching welding materials, etc., to improve contact resistance, improve weldability, The effect of improving weldability

Inactive Publication Date: 2013-10-23
何强
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] In order to overcome the existing resistance welding and stud welding, due to the mismatch of welding materials, or due to the low resistance and high melting point of the metal itself, the welding is difficult or even impossible to weld.

Method used

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  • Welding technique of electric resistance welding and stud welding of unmatched materials
  • Welding technique of electric resistance welding and stud welding of unmatched materials
  • Welding technique of electric resistance welding and stud welding of unmatched materials

Examples

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Embodiment Construction

[0028] Resistance spot welding: welding of two-layer boards, after roughening the welding surface of the thicker board (such as figure 1 , figure 2 ), and then solder. If the plates are thicker, roughen the welding surfaces of the plates before welding. For the welding of three-layer boards and four-layer boards, roughen the plates on all welding surfaces (the upper and lower sides of the middle plate are roughened, and the plates on the outer two sides are only roughened on the welding surface. Thinner plates can not be roughened), and then welded.

[0029] Resistance projection welding: When welding, only the welding surface of the plate can be roughened (such as image 3 , Figure 4 , Figure 5 ), or only on the nut (eg Figure 6 ) bumps can be roughened, and the bumps of the sheet and projection welding nuts (or bolts) can also be roughened at the same time, depending on the thickness of the sheet and the size of the bumps.

[0030] Resistance butt welding: when wel...

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Abstract

The invention relates to a welding technique of electric resistance welding and stud welding. When two unmatched materials are welded, the thicknesses or the cross section sizes of the materials are obviously different, and the welding part of the material with higher thickness and larger cross section size is subjected to the surface roughening treatment, so the weldability of the material is improved. Although the thicknesses or diameters of the two welding materials are matched, when the thicknesses are higher or the cross section sizes are larger, the welding parts of the welding materials are simultaneously subjected to the roughening treatment, the weldability of the materials is improved, and consumption of electric energy is reduced. For metals with higher electric resistance welding difficulty, such as aluminum and aluminum alloy, the weldability can also be improved. The roughening treatment of the metal surfaces is realized through cutting, forging and pressing and the like, and a certain removal function is realized for the plated layer which has an effect on the welding, such as surface zinc plating.

Description

technical field [0001] The invention relates to a welding technology of resistance welding and stud welding. Its characteristic is that it can improve the welding strength and welding stability between plates of different thicknesses and bars of different sizes (round, rectangular). For the welding between plates of similar thickness and bars of similar size (especially materials with large thickness and diameter), the power consumption can be reduced under the premise of improving its weldability. At the same time, it can improve the adaptability of welding equipment to grid current and voltage fluctuations. Background technique [0002] Resistance spot welding can realize welding between thin plates (usually within 3mm), so it is widely used in the field of automobile body-in-white manufacturing. It has good welding performance for the welding of two-layer boards and three-layer boards. However, it is more difficult to weld four-layer and above plates. Ideally, the thi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/235B23K11/34B23K9/23B23K11/16B23K9/20B23K11/00
Inventor 何强
Owner 何强
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