Welding tool and method for machining internal flow channel through friction stir treatment technology

Abstract

The invention discloses a welding tool and method for machining an internal flow channel through a friction stir treatment technology. The welding tool comprises a mounting body, a shaft shoulder anda stirring needle, the shaft shoulder and the stirring needle are rotary bodies, one axial end of the shaft shoulder is fixedly connected with the mounting body, the stirring needle is coaxially and fixedly connected to the other end, away from the mounting body, of the shaft shoulder, a hollow channel is formed in the stirring needle, and a side opening is formed in the circumferential side faceof the stirring needle and communicates with the hollow channel; and a shaft shoulder through hole is formed in the circumferential side face of the shaft shoulder and communicates with the hollow channel. According to the welding tool and method for machining the internal flow channel through the friction stir treatment technology, the friction stir treatment technology is utilized, thermoplasticmaterials can be discharged outwards through the internal flow channel of the welding tool in the machining process, a closed water flow channel can be directly machined in a part, the process is simple, time and labor are saved, the production efficiency is improved, and the machining cost is reduced.

Description

technical field [0001] The invention relates to the technical field of inner runner processing, in particular to a welding tool and a method for processing inner runners using friction stir processing technology. Background technique [0002] With the rise of new energy vehicles, 5G and other technologies, the density of parts such as batteries and electronic components has further increased, resulting in greater heat generation of electrical parts during work. The heat generated by electrical parts needs to be discharged in time, otherwise it will cause damage to the parts. At present, materials with good thermal conductivity such as aluminum alloy and copper alloy are generally used to contact electrical parts, and the heat is taken out through liquid or gas, which can cool the parts in real time and ensure the stable operation of the parts. [0003] At present, there are mainly two ways to process parts with cooling channels, one is to wind water-cooled pipes, and the ot...

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Problems solved by technology

[0007] In order to solve the above problems, the purpose of the present invention is to provide a welding tool and method for processing internal flow channels using friction stir processing technology, which can directly process a closed water flow channel on the parts, save the welding process of the cover plate, and the process is simple. Save time and effort, solve the problem of complex processing and many processes such as water-cooled motor housings and water-cooled radiators with internal flow channels, improve the production efficiency of parts with internal flow channels, reduce processing costs, and have strong practicability

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