Auxiliary heat source welding method for double-spindle friction stir welding

A friction stir welding and auxiliary heat source technology, applied in welding equipment, welding/welding/cutting items, non-electric welding equipment, etc., can solve the problem of easy adhesion and other problems, and achieve the effect of sufficient stirring needle, high feasibility and simple operation

Active Publication Date: 2020-03-06
东北大学秦皇岛分校
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  • Claims
  • Application Information

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Problems solved by technology

It is proposed to use arc or plasma beam as auxiliary heat source when welding high melting point materials, and to use MIG or MAG as auxiliary heat source when welding dissimilar materials. When the aluminum alloy metal side is more likely to reach the plastic state, it is more likely to produce adhesion defects

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  • Auxiliary heat source welding method for double-spindle friction stir welding
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  • Auxiliary heat source welding method for double-spindle friction stir welding

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Embodiment Construction

[0029] Below in conjunction with the present invention Figure 1-4 , to further illustrate the technical solutions in the embodiments of the present invention, but the present invention is not limited to these embodiments.

[0030] A heat source welding method assisted by dual-spindle friction stir welding, comprising the following steps:

[0031] Step 1, prepare the workpiece to be welded:

[0032] Clean the surface of the high-hardness metal plate 1 and the low-hardness metal plate 2, place them on the workbench by the method of butt joint, and fix and position them with a special tooling fixture to form the workpiece to be welded and the weld seam to be welded;

[0033] Step 2, the installation and positioning of the stirring head:

[0034] Install the auxiliary heat source stirring head 3 on the auxiliary heat source rotating main shaft 5 and fix it, install the welding seam stirring head 4 on the welding seam rotating main shaft 6 and fix it, then adjust the auxiliary h...

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Abstract

The invention discloses an auxiliary heat source welding method for double-spindle friction stir welding, and belongs to the technical field of welding. The welding method comprises the welding stepsof (1) preparing of a workpiece to be welded, (2) installing and positioning of stirring heads, (3) welding, and (4) post-treatment. The auxiliary heat source stirring head and the welding seam stirring head are matched for welding, so that the high-hardness metal material and the low-hardness metal material can simultaneously reach the plastic state in the thickness direction, so that plastic metal flows during welding, stirring needles are more sufficient, a welding joint with higher strength is obtained, operation is easy, the feasibility is high, and the method is suitable for all-positionwelding.

Description

technical field [0001] The invention belongs to the field of welding technology, and in particular relates to a welding method with auxiliary heat source for friction stir welding with double spindles. Background technique [0002] Friction stir welding is a new type of solid-phase welding method. During the welding process, the welding temperature is lower than the melting point of the base metal, which can solve the problems of large residual stress, easy generation of pores, and large degree of deformation during the welding process. Therefore, Friction stir welding has been widely used in the welding process of aluminum alloys, copper alloys, and magnesium alloys. With the development of industry, the application field of friction stir welding is expanding continuously, and it has great application prospects in the connection of dissimilar metals such as aluminum-copper, aluminum-magnesium, aluminum-titanium and so on. However, during the welding process of friction sti...

Claims

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Application Information

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IPC IPC(8): B23K20/12B23K20/26B23K20/22B23P15/00
CPCB23K20/122B23K20/1245B23K20/22B23P15/00B23K2103/10B23K2103/12B23K2103/14
Inventor 张会杰刘旭孙舒蕾张豪宋歌星刘剑飞张友民
Owner 东北大学秦皇岛分校
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