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Dissimilar material friction-stir welding tool

A technology of friction stirring and dissimilar materials, applied in welding equipment, manufacturing tools, non-electric welding equipment, etc., can solve problems such as difficult to achieve welding effect and differences in thermal characteristics, and achieve the effect of easy replacement and increased wear resistance

Pending Publication Date: 2020-10-30
AEROSPACE ENG EQUIP SUZHOU CO LTD
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Stirring tools for aluminum-magnesium alloy and steel welding have been widely researched and applied by people in related fields, but the welding of dissimilar materials (aluminum, steel; aluminum, organic composite materials, etc.) It is difficult to achieve a perfect welding effect with advanced tools and processes

Method used

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  • Dissimilar material friction-stir welding tool
  • Dissimilar material friction-stir welding tool
  • Dissimilar material friction-stir welding tool

Examples

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Embodiment Construction

[0018] The implementation of the technical solution will be further described in detail below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

[0019] like Figure 1~2 An embodiment shown: a friction stir welding tool for dissimilar materials, including a tool handle 1, a shaft shoulder 2, and a stirring needle 3 connected in sequence, and the stirring needle is provided with at least one set of bosses at the bottom of its needle tip 4. The stirring needle is arranged as a circular table, and the diameter of the stirring needle gradually decreases from the connection with the shaft shoulder to the direction away from the shaft shoulder; The direction is opposite; the bottom of the shaft shoulder 2 is designed with a revolving groove, and the revolving direction is opposite to the rotation direction of t...

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Abstract

The invention discloses a dissimilar material friction-stir welding tool which comprises a cutter handle, a shaft shoulder part and a stirring needle connected sequentially. The stirring needle is provided with at least one group of lug bosses on the bottom part of a needle tip, and is arranged in a circular truncated cone shape; and the diameter of the stirring needle is gradually reduced from the part connected with the shaft shoulder part to the direction far away from the shaft shoulder part. One group or multiple groups of lug bosses is connected to the bottom part of the stirring needle,a single group is presented in an eccentric way, and the multiple groups are presented in a way of uniformly distributing around the axis of the stirring needle, so that the flow characteristic and the heating amount of materials on the lower part are ensured. The dissimilar material friction-stir welding tool solves the problem of differences in flow characteristics and temperature characteristics of the materials during dissimilar material (aluminum, steel; aluminum, organic composite materials and the like) friction-stir welding, and is particularly suitable for overlap welding of upper and lower dissimilar materials.

Description

technical field [0001] The invention discloses a friction stir welding tool for dissimilar materials, which relates to the field of friction stir welding special welding. Background technique [0002] At present, more and more friction stir welding equipment is involved in the production fields of aerospace, aviation, high-speed rail and other rail transportation. Friction stir welding technology belongs to a solid phase connection technology, which is suitable for green welding of aluminum alloy, magnesium alloy and steel. Stirring tools for aluminum-magnesium alloy and steel welding have been widely researched and applied by people in related fields, but the welding of dissimilar materials (aluminum, steel; aluminum, organic composite materials, etc.) It is difficult to achieve a perfect welding effect with advanced tools and processes. Contents of the invention [0003] The present invention aims at the defects in the above-mentioned background technology, and provides...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K20/12B23K20/26
CPCB23K20/1255B23K20/26
Inventor 林永勇胡峰峰张华德燕志翔钟赟于敏华
Owner AEROSPACE ENG EQUIP SUZHOU CO LTD
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