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Device and method for manufacturing radial additive by friction stir welding

A technology of friction stir welding and additive manufacturing, which is applied in the field of additive manufacturing, can solve problems such as reduced efficiency, and achieve the effect of increasing strength and high additive quality

Active Publication Date: 2020-01-03
SHENYANG AEROSPACE UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, friction stir welding has a certain amount of thinning in the axial direction during the welding process, which greatly reduces the efficiency of the above-mentioned additive method

Method used

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  • Device and method for manufacturing radial additive by friction stir welding
  • Device and method for manufacturing radial additive by friction stir welding
  • Device and method for manufacturing radial additive by friction stir welding

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Embodiment 1

[0051] A method for friction stir welding radial additive manufacturing, using a device for friction stir welding radial additive manufacturing, comprising the following steps:

[0052] Step 1, select the mold 5 of the ring-shaped five-pointed star structure, and fix the mold 5 on the workbench of the friction stir welding machine, wherein the center of the mold 5 reaches the outer convex point of the mold 5 of the ring-shaped five-pointed star structure The distance L is 13 mm, and the height is 5 mm. In order to avoid the adhesion of the pure aluminum powder to the inner wall of the mold 5, after smearing polytetrafluoroethylene on the inner wall of the mold 5, fill the mold 5 with pure aluminum powder;

[0053] Step 2, processing and obtaining the material 17 obtained by the first radial addition;

[0054] Step 2.1, select figure 2 The stirring head 1 of the shown cylindrical stirring needle 10, the diameter of the moving shoulder 11 of the stirring head 1 is 20mm, the di...

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Abstract

The invention relates to a device and method for manufacturing a radial additive by friction stir welding. The device is a set of special-shaped stationary shaft shoulder body and comprises a stirringhead, a stationary shaft shoulder body and a mould, wherein the outer side of the stirring head is coaxially provided with the stationary shaft shoulder body in a sleeved mode, and the stationary shaft shoulder body is matched with the mould to be installed. The mould is used to pass through the radial additive for several times, and thus the required additive manufacturing parts are obtained. Inthe additive manufacturing process, auxiliary processes such as ultrasonic, auxiliary heating, etc. are added to ensure the performances of the additive manufacturing parts. In a semi-solid state, ultrasonic cavitation can refine grains to form ultrafine / nanocrystalline materials; and in a solid state, ultrasonic can promote the atomic diffusion ability and can also reduce the residual stress, which is conducive to obtaining an additive structure with high bearing capacity. Meanwhile, for the of metal-matrix composites, the addition of ultrasonic can also promote the violent mixing of materials to avoid the phenomenon of segregation in the process of additive manufacturing.

Description

technical field [0001] The invention belongs to the technical field of additive manufacturing, and in particular relates to a device and method for friction stir welding radial additive manufacturing. Background technique [0002] With the continuous development of engineering technology, traditional subtractive manufacturing methods such as turning, milling, planing, and grinding can no longer meet the needs of some projects. Therefore, additive manufacturing technology came into being. Additive manufacturing technology is a process of gradually accumulating materials under certain temperature and pressure conditions. It is a manufacturing technology from scratch. At present, most additive manufacturing technologies use methods such as material extrusion, sintering, melting, light curing, and spraying to accumulate layer by layer. However, in the process of melting and solidifying the material first, defects such as pores are prone to occur on the surface or inside of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K20/12B29C64/141B29C64/20B29C64/10
CPCB23K20/1215B29C64/10B29C64/141B29C64/20
Inventor 姬书得李鸣申岳玉梅温琦马琳宫雪吕赞
Owner SHENYANG AEROSPACE UNIVERSITY
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