Friction stir welding tool for improving fluidity of plastic metal

A friction stir welding and fluidity technology, used in metal processing equipment, manufacturing tools, welding equipment, etc., can solve the problems of reducing the shear strength and peel strength of joints, poor fluidity of plastic metal, etc., to facilitate maintenance and replacement. , The effect of increasing material fluidity and improving fluidity

Pending Publication Date: 2022-02-01
MINTH AUTOMOTIVE TECH RES & DEV CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the "traditional friction stir welding tool" is used to weld aluminum alloy lap joints, because the threaded conical stirring needle cannot fully stir the base metal on the upper and lower sides, the fluidity of the plastic metal inside the weld is poor, and finally in The "cold lap defect" is formed when the weld seam retreats, and the "HOOK defect" is formed on the forward side of the weld seam, which greatly reduces the shear strength and peel strength of the joint

Method used

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  • Friction stir welding tool for improving fluidity of plastic metal
  • Friction stir welding tool for improving fluidity of plastic metal
  • Friction stir welding tool for improving fluidity of plastic metal

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Embodiment Construction

[0021] The following are specific embodiments of the present invention and in conjunction with the accompanying drawings, the technical solutions of the present invention are further described, but the present invention is not limited to these embodiments.

[0022] Such as Figure 1-Figure 4 As shown, the friction stir welding tool for improving the fluidity of plastic metals comprises: a stirring head main body 1, which is cylindrical in shape, the stirring head main body 1 has a shaft shoulder 2, and a storage hole 3 is provided at the front end of the shaft shoulder 2; The needle 4 is detachably installed on the object hole 3. The front end of the stirring needle 4 has three independent cutting edges 5, and each cutting edge 5 has a counterclockwise thread on the outer surface.

[0023] Stirring needle 4 and stirring head main body 1 are connected by screw 6, wherein stirring needle 4 and stirring head main body 1 have the same rotation speed and moving direction during the...

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Abstract

The invention belongs to the technical field of friction stir welding, and provides a friction stir welding tool for improving fluidity of plastic metal, comprising a cylindrical stirring head main body and a stirring needle, wherein the stirring head main body is provided with a shaft shoulder, and the front end of the shaft shoulder is provided with a storage hole; the stirring needle is detachably arranged on the storage hole, the front end head of the stirring needle is provided with three independent cutting edges, and the outer surface of each cutting edge is provided with a thread of an anticlockwise structure. Compared with the prior art, the stirring needle has the advantages that the stirring needle is provided with the three independent stirring needle cutting edges, each cutting edge is provided with the threads of the anticlockwise structure so that the material fluidity in the welding process can be improved, the stirring needle and the stirring head main body are designed in a separated mode, and follow-up operators can conveniently overhaul and replace the stirring needle.

Description

technical field [0001] The invention belongs to the technical field of friction stir welding, and in particular relates to a friction stir welding tool for improving the fluidity of plastic metal. Background technique [0002] Aluminum alloy lap structures have been widely used in the fields of aerospace and automobile manufacturing, such as the connection of aircraft skin and ribs, wing frames and ground decks, launch vehicle fairings, automobile chassis, battery packs and other structural components. Friction stir welding is a new type of solid-phase joining technology. Since the material does not melt during the welding process, the welding residual stress is low, and there is no arc smoke and dust during the welding process, it is one of the best ways to solve the connection of aluminum alloy lap joints. [0003] The existing "traditional friction stir welding tool" makes the base material reach a thermoplastic state through the high-speed rotational friction and forging...

Claims

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Application Information

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IPC IPC(8): B23K20/12B23K20/26
CPCB23K20/1245B23K20/1255B23K2103/10
Inventor 梁军强迟珉良谭兵
Owner MINTH AUTOMOTIVE TECH RES & DEV CO LTD
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