Transactions of Materials and Heat Treatment

Title：Cold extrusion process and die design of automotive wheel hub bearing rings

Authors： MENG Bin1 LI Hui2 LAI Hai-zhong2 XUN Yi1 YANG Qing-hua1(1.MOE Key Laboratory of Mechanical Manufacture and Automation Zhejiang University of Technology Hangzhou 310014 China 2.Hangzhou Youxie Cold Precision Forging Technology Co. Ltd. Hangzhou 310051 Chin

Unit：

KeyWords： automotive wheel hub bearing cold extrusion die

ClassificationCode：TG376.3

year,vol(issue):pagenumber：2008,33(6):100-102

Abstract：

The whole cold extrusion process plan of SANTANA's L45449 automotive wheel hub bearing was determined.The cold extrusion die structure of wheel hub bearing rings was illustrated.In order to deal with the problem of large deformation resistance of bearing steel during cold extrusion,several convex rings were added on the inner surface of cavity die,which could preheat billet before extrusion.Experiments show that using this cold extrusion to produce automotive wheel hub bearing ring,the made products have the advantage of low material consumption,high mechanical strength,less equipment investment and great economic value.

Funds：

浙江省科技厅资助项目(2008C21126);; 浙江省机械电子工程重中文重学科开放基金

Reference：

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