Double-shaft-shoulder friction stir tunnel forming method

A friction stir and friction stir welding technology, used in metal processing equipment, welding equipment, manufacturing tools, etc., can solve the problems of limited improvement in the volume and forming position of medium and thick plate tunnels, and improve heat dissipation efficiency and corrosion resistance. , Realize the effect of light weight and ensure the quality of surface forming

Active Publication Date: 2021-12-07
HARBIN INST OF TECH AT WEIHAI
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Problems solved by technology

However, this method has a limited effect on improving the volume and forming position of the medium-thick plate tunnel

Method used

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  • Double-shaft-shoulder friction stir tunnel forming method
  • Double-shaft-shoulder friction stir tunnel forming method
  • Double-shaft-shoulder friction stir tunnel forming method

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Embodiment Construction

[0036]In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.

[0037] A method for forming a double-shouldered friction stir tunnel, such as figure 1 As shown, the specific method steps are as follows, figure 1 The direction of the middle arrow is the tunnel processing direction:

[0038] (1) Provide double-sided processing grooves on the metal plate 1 along the tunnel processing direction, mechanically polish, and wipe the surface of the metal plate 1 with chemical reagents to remove impurities on the surface of the metal plate 1 .

[0039] Specifically, a metal plate 1 is prepared, and the metal pla...

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Abstract

The invention provides a double-shaft-shoulder friction stir tunnel forming method, and solves the technical problems that in the traditional friction stir tunnel forming process, a tunnel is small in size and unstable to form and the forming position is close to the surface of a plate. A double-thread structure of the double-shaft-shoulder friction stir welding tunnel machining device is used for enabling a metal plate center material to flow outwards, so that the tunnel can be formed in the center of the plate; the plane of the end surface of the double shaft shoulder and a vortex-shaped line groove alternate structure enable metal materials to be stacked on the upper surface and the lower surface of the metal plate and achieve welding while the pressing effect of the double shaft shoulder on the upper surface and the lower surface of the metal plate is achieved, and therefore the surface forming quality is guaranteed; double-face machining grooves are used for guiding out materials in the metal plate, the mobility of the materials is improved through cooperation with an auxiliary heating device, and finally, the continuous tunnel large in size and excellent in surface quality is formed in the metal plate. The method can be widely applied in the technical field of medium plate friction stir tunnel forming.

Description

technical field [0001] The invention belongs to the field of welding technology, and more specifically relates to a method for forming a double-shaft-shouldered friction-stir tunnel. Background technique [0002] With the advancement of science and technology and the continuous development of the material industry, lower cost, high efficiency, and easy-to-manufacture heat exchange devices and cooling systems are widely used in the automotive and aerospace fields. Tunnel processing technology can provide a higher surface area to volume ratio, so it can achieve higher heat transfer rate in the heat exchange device and reduce the volume of the device to achieve lightweight requirements. Therefore, tunnel processing technology is expected to become a new generation of high heat production equipment cooling system requirements one of the solutions. At present, tunnel processing technologies include electron beam processing (expensive, low processing rate), laser processing (expe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K20/12B23K20/26
CPCB23K20/122B23K20/26
Inventor 周利高士康李高辉孙广达刘煜纯
Owner HARBIN INST OF TECH AT WEIHAI
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