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Welding tool achieving weld joint zero thinning during friction stir welding and welding method

A technology of friction stir welding and welding methods, applied in welding equipment, manufacturing tools, non-electric welding equipment, etc., can solve the problems of high cost, low efficiency, narrow applicable range, etc., and achieve low processing and manufacturing costs, wide application range, Guarantee the effect of high-quality forming

Inactive Publication Date: 2015-10-14
SHENYANG INST OF AUTOMATION - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The object of the present invention is to provide a welding tool and a welding method for realizing zero thinning of the friction stir welding seam, so as to solve the problems of high cost, low efficiency, and possibility of eliminating the thinning of the friction stir welding seam in the prior art. Issues such as narrow scope of application

Method used

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  • Welding tool achieving weld joint zero thinning during friction stir welding and welding method
  • Welding tool achieving weld joint zero thinning during friction stir welding and welding method
  • Welding tool achieving weld joint zero thinning during friction stir welding and welding method

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Embodiment 1

[0037] In the welding tool of this embodiment, the clamping body, the shaft shoulder and the stirring pin are integrated from top to bottom. The included angle between the end surface of the shoulder and the axis of the welding tool is 78°, and a spiral groove structure is processed on the end surface of the shoulder. The diameter of the shoulder is 24mm, and the length of the stirring pin is 5.85mm. The 5.94mm thick aluminum alloy plate is used as the welding object. During welding, the rotation speed of the welding tool is 800r / min, the welding speed is 100mm / min, the indentation of the shoulder of the welding tool to the upper surface of the base metal to be welded is 0mm, and the inclination angle of the welding tool is 0°.

[0038] Cut along the vertical welding direction after welding image 3 As shown in the analysis sample, by image 3 It can be seen that the weld seam is well formed and no flash appears. Using a spiral micrometer, the image 3The weld seam thickne...

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Abstract

The invention discloses a welding tool achieving weld joint zero thinning during friction stir welding and a welding method, and belongs to the field of friction stir welding. The welding tool is composed of a clamping body, a shaft shoulder and a stirring needle. The end face of the shaft shoulder is inwards concave. A spiral groove structure is machined in the inward concave end face. When the welding tool is used for friction stir welding, the welding tool is installed on a welding machine main shaft, a welded base material is placed on a metal cushion plate and is firmly positioned; then a welding machine is started, the welding tool starts to rotate and is inserted into a workpiece from a welding start point; when the distance between the outer edge of the end face of the shaft shoulder of the welding tool and the upper surface of the workpiece is zero, the welding tool stops insertion, and then the welding tool carries out welding along a welding track. During welding, the inclined angle of the welding tool is zero. The welding tool solves the problems that in the prior art, cost is high, efficiency is low and the application range is narrow in the weld joint thinning phenomenon in the friction stir welding.

Description

technical field [0001] The invention belongs to the field of friction stir welding, and in particular relates to a welding tool and a welding method for realizing zero thinning of friction stir welding seams. Background technique [0002] Friction stir welding is a high-quality solid-phase welding technology invented by the British Welding Institute in 1991. Its basic principle is that the high-speed rotating friction stir welding welding tool implements frictional heat and stirring cutting action on the base metal to be welded, so that the base metal to be welded undergoes thermoplastic deformation, and is completed under the rotation of the welding tool and extrusion forging. Weld forming. [0003] The friction stir welding tool consists of components such as shoulders and stirring pins. When traditional friction stir welding welding tools are used for welding, the shoulder needs to exert a certain amount of indentation on the surface of the base metal to be welded, so a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K20/26B23K20/12
Inventor 张会杰王敏张骁张景宝
Owner SHENYANG INST OF AUTOMATION - CHINESE ACAD OF SCI
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