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Friction stir welding welding method and tool for non-inclination self-upsetting

A technology of friction stir welding and welding tools, which is applied in welding equipment, manufacturing tools, non-electric welding equipment, etc., and can solve problems such as welding defects, reduced work efficiency, and low precision

Active Publication Date: 2016-08-17
BEIJING FSW TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In straight seam welding, it is easy to maintain a fixed angle, but in plane two-dimensional welding, the inclination direction of the stirring needle needs to be adjusted at every turn of the weld seam, which reduces work efficiency. If the inclination angle is not adjusted properly or the accuracy is not high, prone to welding defects

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  • Friction stir welding welding method and tool for non-inclination self-upsetting
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  • Friction stir welding welding method and tool for non-inclination self-upsetting

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Embodiment Construction

[0025] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings.

[0026] refer to figure 1 , a non-inclined self-upsetting friction stir welding welding method, comprising the following steps,

[0027] Step 1. Fix the material to be welded on the workbench, and form a weld bead 2 at the welding place of two pieces of material to be welded 1, and the thickness of the material to be welded is 3 to 100mm;

[0028] Step 2, the stirring head 3 is placed above the welding surface of the material to be welded, where the stirring head can be placed at any position above the welding surface, at this time, the axial direction of the stirring head coincides with the normal direction of the material to be welded;

[0029] Step 3, the stirring head starts to rotate under the action of the rotating mechanism and the lifting mechanism and falls in place. The rotating mechanism that drives the stirring head to rotate and t...

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Abstract

The invention relates to the technical field of welding, in particular to an aclinal self-upsetting, stirring and friction welding method and tool. The tool comprises a stirring head and a stirring needle, the stirring head is of a hollow structure, the stirring needle is rotatably arranged in the hollow structure of the stirring head and can stretch and retract in the stirring head, the axis of the stirring head and the axis of the stirring needle are overlapped, a shaft shoulder of the stirring head is provided with a forging boss, and the height of the forging boss is smaller than the height of the stirring portion left after the stirring needle extends out of the stirring head. In the whole welding process, a dip angle adjusting mechanism does not need to be arranged on equipment, complexity of the welding equipment is reduced, the angle between the shaft shoulder of the stirring head and a plane normal of a material to be welded is 0 degree, and accordingly aclinal stirring friction welding is achieved. When an aclinal stirring friction welding technology is adopted in two-dimensional plane welding, the angle of the stirring head does not need to be adjusted at a welding seam corner, welding procedures are reduced, meanwhile, the dip angle adjusting mechanism does not need to be arranged on the equipment, complexity of the welding equipment is reduced, and welding efficiency is improved.

Description

technical field [0001] The invention relates to the field of welding technology, in particular to a non-inclination self-upsetting friction stir welding welding method and tools suitable for the connection of the same and different thermoplastic materials, material processing, and workpiece defect repair. Background technique [0002] Friction stir welding is a novel and potential welding method. This method uses a special tool - a stirring head, which rotates at high speed and penetrates into the workpiece. The contact part between the stirring head and the workpiece generates frictional heat. When the surrounding metal forms a plastic softening layer, it starts to move along the welding direction. The metal fills the cavity formed behind the stirring needle under the rotation of the stirring head, and is forged under the stirring of the stirring head shaft shoulder and the stirring needle and the top pressure to form a dense weld. This technology has shown a series of uni...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K20/12
CPCB23K20/122B23K20/1255
Inventor 董继红孟强栾国红
Owner BEIJING FSW TECH
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