Stirring pin for surface stirring and rubbing

A technology of friction stirring and needle stirring, applied in non-electric welding equipment, welding equipment, metal processing equipment, etc., to achieve the effect of easy operation, excellent processing effect and simple structure

Inactive Publication Date: 2013-01-02
NANTONG TIANHUA HERUI TECH VENTURES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Apparently, conventional friction stir welding / machining tools with pin designs are not suitable for surface modification by friction stir processing

Method used

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  • Stirring pin for surface stirring and rubbing
  • Stirring pin for surface stirring and rubbing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] During processing, it is required to only cause material deformation within the range of 0.02-0.8 mm on the surface of the workpiece. Corresponding processing requirements: the rotation speed of the stirring needle is 200~800 rpm, and the horizontal running speed is 20~50 mm / min.

[0016] This embodiment has excellent processing effect, simple structure and easy operation.

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PUM

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Abstract

A stirring pin for surface stirring and rubbing is used in a machining process for surface stirring and rubbing. The stirring pin for surface stirring and rubbing is composed of a pin body (1) and a pin head (2), wherein the pin body (1) is in a cylindrical or conical structure, and the pin head (2) is arranged at one end of the pin body (1). The stirring pin is characterized in that the pin head (2) is in a concave structure with a high edge and a lower middle and provided with stripes diverging from inside to outside. During processing, material deformation of a workpiece surface is required to be in a range of 0.02mm to 0.8mm. Corresponding processing requirements include that the rotation speed of the stirring pin is 200 to 800 turns / minute, and the transverse operating speed is 20 to 50 millimeters / minute. The stirring pin for surface stirring and rubbing is good in processing effect, simple in structure and easy to operate.

Description

technical field [0001] The invention relates to a metal material processing method, and in particular provides a stirring pin for surface stirring and friction. Background technique [0002] Friction stir welding is a solid-state welding process with great application value. Its working principle is introduced as follows: a non-consumable welding tool consisting of a stirring needle and its base rotates at high speed to insert the stirring needle between the plates to be connected. When the shaft shoulder is in contact with the surface of the workpiece, the stirring needle moves laterally along the seam at the same time. The severe friction between the welding tool and the workpiece leads to a significant increase in the temperature of the welding zone, resulting in plasticization of the material. The role of the stirring pin is to stir the material in the weld area to make it produce plastic rheology and mixing, and the role of the shoulder is to apply forging to the mater...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K20/12
Inventor 季历程
Owner NANTONG TIANHUA HERUI TECH VENTURES
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