Transactions of Materials and Heat Treatment

Title：Forming process analysis of upset forging for aluminum alloy short-tailed rivet

Authors： Fu Kai Liu Yu Zhao Xiangyun Xiong Guanglian

Unit： Meishan CSR Fasteners Science & Technology Co. Ltd.

KeyWords： aluminum alloy short-tailed rivet upset forging ratio crack

ClassificationCode：TG316

year,vol(issue):pagenumber：2014,39(6):28-31

Abstract：

Taking aluminum alloy short-tailed rivet with Ф10 mm diameter as an example, the existing problem during manufacturing process of rivet was analyzed and discussed in detail. The upset forging ratio and upset forging rate of rivet head were calculated and analyzed, and the upset forging ratio of 1.676 and upset forging rate of 69.57% were chosen. The problem of crack occurring on rivet head was solved by twice upset forging, and so did the material calculation during threading by the method of short-tailed grooved forming zone. The manufacturing process of short-tailed end teeth of rivet was adjusted to be blank forming, heat treatment, thread rolling and surface treatment, which led to the phenomenon of end teeth pull-out being eliminated.

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Reference：

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