Transactions of Materials and Heat Treatment

Title：Research on producing pure copper computer thermal fin with hot extrusion method

Authors： YAN Jian-hui 1 LIU Rui-qing 2 CAI Wei 2 (1.Cellege of Mechanic Engineering and Automation Hunan University of Science and Technology Xiangtan Hunan 411201 China 2.College of Material and Chemistry Engineering Southern Institute of Metallurgy Ganzh

Unit：

KeyWords： pure copper computer heat fins extrusion die hot extrusion forming welding quality

ClassificationCode：TG379

year,vol(issue):pagenumber：2005,30(2):26-28

Abstract：

This paper analyzes the Characteristics of product cross-section and extrusion situation of the extrusion die. A special extrusion die was designed in order to guarantee the strength. With high temperature extrusion forming technology, the experiment was done to produce the pure copper computer heat fins. The research indicates the pressure and deformation of the suspension arm can reduce by decreasing the pressure of the suspension arm, the area of the pressure and changing the force formation. The design can increase die strength, service life of die, reduce die cost and acquire high quality products. The welding quality of pure Copper is better through observing the welding microstructure characteristic with SEM technology. The welding microstructure would be almost identical to the matrixes.

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Reference：

[1]田荣璋,王祝堂.铜合金及其加工手册[M].长沙:中南大学出版社.2002.
[2]谢建新,刘静安.金属挤压理论与技术[M].北京:冶金工业出版社,2001.
[3]张志彤.我国铜加工产业技术现状及发展对策[J].有色金属加工,2002,31:3.

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