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Micro friction stir welding method for small-thickness component and stir shaft shoulder of micro friction stir welding method

A technology of micro-stirring and friction welding, which is applied in the field of stirring shaft shoulder and micro-stirring friction welding, can solve the problems of complex stability equipment, etc., and achieve the effect of ensuring the overall weld quality, increasing stability and reducing complexity

Inactive Publication Date: 2016-06-15
SHANGHAI AEROSPACE EQUIP MFG GENERAL FACTORY
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AI Technical Summary

Problems solved by technology

[0004] The problem solved by the present invention is the stability and equipment complexity of the existing dip-type friction stir welding method in the welding process of micro-thickness components

Method used

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  • Micro friction stir welding method for small-thickness component and stir shaft shoulder of micro friction stir welding method
  • Micro friction stir welding method for small-thickness component and stir shaft shoulder of micro friction stir welding method
  • Micro friction stir welding method for small-thickness component and stir shaft shoulder of micro friction stir welding method

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Embodiment Construction

[0022] In order to describe the technical content, structural features, achieved goals and effects of the present invention in detail, the following will be described in detail in conjunction with the embodiments and accompanying drawings.

[0023] see figure 1 , the first embodiment of the micro-friction stir welding method for components with small thickness dimensions in the present invention is to weld the base material 3 to be welded (the base material to be welded is an ultra-thin aluminum alloy 6061 plate with a thickness of 0.8mm), including installing on the equipment spindle 1 A micro-stir friction welding tool 2 with a stirring shoulder 4, the stirring shoulder 4 is a flat shoulder with a cohesive pattern; during welding, the inclination angle between the equipment main shaft 1 and the normal direction of the workpiece surface is 0 degrees, and the equipment main shaft 1 drives the micro The friction stir welding tool 2 rotates at a rotation speed of at least 20000r...

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Abstract

The invention discloses a micro friction stir welding method for a small-thickness component and a stir shaft shoulder of the micro friction stir welding method. The method comprises the steps that a micro friction stir welding tool with the stir shaft shoulder is installed on an equipment spindle, the stir shaft shoulder is a flat shaft shoulder with cohesive figures or the stir shaft shoulder comprises a shaft shoulder body and a protrusion part protruding outwards from the shaft shoulder body, and the surface of the protrusion part is provided with cohesive figures; and the equipment spindle forms a 0-degree dip angle relative to the normal direction of the surface of a workpiece, the equipment spindle drives the micro friction stir welding tool to rotate at the rotation speed of 5000 rpm or higher, and the micro friction stir welding tool moves along a welding track at the constant welding speed and conducts upsetting welding. A welding process can be completed through only three-axis linkage due to the fact that the equipment spindle forms the 0-degree dip angle relative to the normal direction of the surface of the workpiece. Accordingly, equipment is simple, and stability is ensured through the cohesive figures and the constant-speed welding.

Description

technical field [0001] The invention relates to the field of welding, in particular to a micro-stir friction welding method for components with small thickness dimensions, the method and a stirring shaft shoulder. Background technique [0002] Friction stir welding (FSW) is a new type of solid-phase joining method, which has the advantages of no welding filler material, small heat input, small welding deformation, few defects in welded joints, and good mechanical properties. This method has a wide range of applications, including aluminum and magnesium alloys. , and materials that are difficult to weld by traditional fusion welding, and even suitable for welding dissimilar metals. The traditional friction stir welding welding process is realized with an inclination angle. The stirring tool keeps a 2-5° inclination angle with the normal direction of the workpiece surface at all times and follows along the tangential direction of the weld. The position of the main axis of the...

Claims

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Application Information

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IPC IPC(8): B23K20/12
Inventor 赵慧慧封小松熊艳艳李颖胡蓝郭立杰
Owner SHANGHAI AEROSPACE EQUIP MFG GENERAL FACTORY
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