Prospect of development and application of friction stir channeling process technology

FENG Xingmei

doi:10.7512/j.issn.1001-2303.2020.04.03

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Prospect of development and application of friction stir channeling process technology
Vol. 50, Issue 4, Pages: 24-29(2020)
Published：2020
DOI： 10.7512/j.issn.1001-2303.2020.04.03
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DOI：

FENG Xingmei. Prospect of development and application of friction stir channeling process technology[J]. Eletric Welding Machine2020, 50(4): 24-29. DOI： 10.7512/j.issn.1001-2303.2020.04.03.

摘要

搅拌摩擦孔道加工技术(FSCP)是一种直接在铝合金材料上加工成形内部通道的固相加工专利技术

可用于结构减重及内部液体流道成形等。介绍了FSCP技术专利的技术进展及英国焊接研究所采用静轴肩FSC技术制备铝合金液冷流道的加工技术原理及应用问题

通过分析焊接过程及X射线断层扫描检测表明:搅拌工具形状及搅拌工具旋转速度、焊接前进速度、轴向力等工艺因素是影响液冷通道成形的关键工艺因素

搅拌摩擦加工过程中搅拌工具对金属的搅拌、挤压及塑化流动使回退侧金属的截面呈现参差不齐的界面形状。

Abstract

Friction stir channeling process（FSCP） is a patented solid-state process technology to produce sub-surface channels in monolithic aluminum components in a single step

it can be used for forming internal fluid channel and reducing weight in components. The technical progress of FSCP

and the process technology principle and application problems of a new TWI invention--stationary shoulder FSCP technology manufacturing aluminum alloy liquid cooling flow channel are intro-duced. Through the welding process analysis and X ray tomography detection

the results show that the geometry

rotation speed

feed speed and vertical force of the stirring tool are the key technology factors affecting the forming of liquid cooling channel. The metal section on the retreat side of the channel presents an irregular interface shape due to the mixing and extrusion and the plasticizing flow of the metal during the friction stir process.