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A dual-spindle friction stir welding auxiliary heat source welding method

A technology of friction stir welding and auxiliary heat source, which is applied in welding equipment, welding/welding/cutting items, non-electric welding equipment, etc., and can solve problems such as easy adhesion

Active Publication Date: 2021-04-13
东北大学秦皇岛分校
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  • Abstract
  • Description
  • 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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  • A dual-spindle friction stir welding auxiliary heat source welding method
  • A dual-spindle friction stir welding auxiliary heat source welding method
  • A dual-spindle friction stir welding auxiliary heat source welding method

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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

A dual-spindle friction stir welding auxiliary heat source welding method belongs to the field of welding technology. The welding steps include: (1) preparing a workpiece to be welded; (2) installing and positioning a stirring head; (3) welding; (4) post-processing. The invention uses the auxiliary heat source stirring head and the welding seam stirring head to cooperate with welding, so that the high-hardness metal material and the low-hardness metal material can reach the plastic state at the same time in the thickness direction, so that the plastic metal flow and the stirring needle during welding are more sufficient. A welded joint with higher strength is obtained, and the operation is simple and feasible, and it is suitable for all-position welding.

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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Patent Type & Authority Patents(China)
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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