Transactions of Materials and Heat Treatment

Title：Study about the strength and structure of the cold upsetting punch of inner-hexagon bolt

Authors： Huazhong University of Science and Technology Chen Zhiming Zhou Shineng

Unit：

KeyWords： Inner\|hexagon bolt Cold upsetting punch Strength of the punch

ClassificationCode：TG316.1

year,vol(issue):pagenumber：2002,27(2):50-53

Abstract：

This paper comprehensively analyses why the cold upsetting punch of inner\|hexagon bolt breaks at the early stage from some sides,such as forming technology of the bolt, structure of the punch and manufacturing method, and also this paper gives some effective ways to increase the strength and life\|span of the cold upsetting punch of inner\|hexagon bolt.

Funds：

Reference：

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