A Friction Stir Welding Tool for Large Aspect Ratio and Low Impedance Welding
A technology of friction stir and aspect ratio, applied in welding equipment, manufacturing tools, non-electric welding equipment, etc., can solve the problems of reducing heat input and achieve the effects of promoting flow, reducing size, and reducing time
Active Publication Date: 2021-03-12
HARBIN INST OF TECH +1
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Problems solved by technology
[0004] The purpose of the present invention is to solve the requirement of single high-quality welding with large depth-to-width ratio under the special profile structure in the existing friction stir welding process, and at the same time reduce the heat input to improve the mechanical properties of the joint, and propose a welding method that can realize large depth-to-width ratio and low impedance welding The friction stir welding welding tool, the technical scheme adopted is as follows
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Embodiment 1
[0029] A friction stir welding tool for realizing large aspect ratio and low impedance welding, such as Figure 1 to Figure 3 As shown, the friction stir welding tool includes a clamping handle 1, a stirring body 2, a positioning screw 3 and two fastening screws 4;
[0030] The clamping handle 1 includes an upper clamping body 1-1 and a lower clamping body 1-2; both the upper clamping body 1-1 and the lower clamping body 1-2 are hollow cylindrical structures and are made into one , wherein, the diameter of the mounting body 1-1 is smaller than the diameter of the lower clamping body 1-2; the outer surface of the upper mounting body 1-1 is provided with a welding tool mounting surface 1-1-1 and an axial threaded hole 1 -1-2; At least one cooling ring groove 1-2-1 is provided on the outer surface of the lower clamping body 1-2, and an axis is set at the axial center position of the lower clamping body 1-2 Through hole 1-2-2, two symmetrical clamping threaded holes 1-2-3 are pro...
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The invention provides a friction stir welding tool for realizing high depth-width-ratio low-resistance welding, and belongs to the technical field of friction stir welding. The friction stir weldingtool comprises a clamping handle, a stirring body, a positioning screw and two fastening screws, wherein the clamping handle comprises an upper clamping body and a lower clamping body; an axis throughhole is formed in an axis of the upper clamping body; two symmetric clamping thread holes are formed in the lower clamping body in the radial direction; the stirring body is fixedly mounted in the axial through hole; two symmetric circumferential planes are circumferentially arranged along the stirring body and are used for fastening and clamping; and shaft shoulders and stirring pins are arranged at the upper end and the lower end of the stirring body. The frictions stir welding tool is capable of realizing one-time high depth-width-ratio high-quality welding of a special section structure,and meanwhile, the heat input is obviously reduced, a welded material is promoted to flow, and the mechanical performance of a joint is improved.
Description
technical field [0001] The invention relates to a friction stir welding welding tool for realizing large aspect ratio and low impedance welding, and belongs to the technical field of friction stir welding. Background technique [0002] Friction Stir Welding Friction Stir Welding is a new type of solid-phase welding method invented by the British Welding Institute TWI in 1991. It overcomes the welding defects such as cracks and pores that are easily generated in the traditional welding process, and makes some materials that are difficult to weld Reliable and high-quality welding is achieved. The basic working principle is to use a welding tool with a shaft shoulder or a stirring needle to rotate at high speed, and a large amount of frictional heat and plastic deformation heat are generated between the tool and the workpiece, so that the workpiece material is partially plasticized. , when the welding tool moves forward along the welding interface, the plasticized material move...
Claims
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IPC IPC(8): B23K20/12B23K20/26
CPCB23K20/12B23K20/26
Inventor 黄永宪谢聿铭于江祥孟祥晨陈磊
Owner HARBIN INST OF TECH