Friction stir welding tool and friction stir welding device

Abstract

The invention discloses a friction stir welding tool and a friction stir welding device, which relate to the technical field of friction stir welding; the friction stir welding tool is used to cooperate with a welding machine, and the welding machine includes a body and a main shaft rotatably arranged on the body. The tool specifically includes: a stirring head, an outer cylinder, a sleeve, and a stationary shoulder arranged coaxially in sequence and sleeved on the outside of the stirring needle; the stirring head includes a clamping handle and a stirring needle, and one end of the clamping handle is used for driving with the main shaft The other end is fixedly connected with the stirring needle, which is used to drive the stirring needle to rotate and penetrate into the material to be welded under the drive of the main shaft; and the material of the clamping tool handle is steel material, and the material of the stirring needle is ceramic or hard alloy material; The end of the cylinder away from the sleeve is fixedly connected with the machine body, and the static shoulder is used to bear against the surface of the material to be welded. The tool can not only ensure a lower amount of wear in the welding process, but also simplify the machining process, reduce manufacturing costs, avoid material waste, and increase the yield of the tool.

Description

technical field [0001] The invention relates to the technical field of friction stir welding, in particular to a friction stir welding tool and a friction stir welding device. Background technique [0002] Friction stir welding is an advanced welding technology invented by the British Institute of Welding Technology in 1991. Due to its high welding quality, green and pollution-free, it is widely used in rail transit, aerospace and other fields. Especially in the welding of metal materials such as magnesium and aluminum, huge economic and social benefits have been achieved. [0003] In the friction stir welding technology, the design of the friction stir welding tool is the core of the friction stir welding technology. In the process of friction stir processing, a thermo-mechanical action occurs between the stirring head and the shoulder and the material to be welded to form a weld, so the stirring head and the shoulder directly bear heat, load and friction. The selection o...

AI Technical Summary

Problems solved by technology

However, when materials such as ceramics or hard alloys are used as raw materials for the preparation of stirring heads and shoulders, there are often problems of high preparation costs and huge waste of materials, and the processing process is relatively difficult and the yield is low.

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