Die Life and Workpiece Properties Under Dry Condition in High-Speed Pressworking

[+] Author and Article Information
Akira Iwabuchi

Department of Mechanical Engineering, Iwate University, 4-3-5 Ueda, Morioka 020, Japan

Ahmad bin Hj. Yunus

Presswork Division, Standards and Industrial Research Institute of Malaysia, P.O. Box 7035, 40911 Shah Alam, Selangor, Malaysia

Mitsuaki Hayashi, Jun-ichiro Nishi, Yuji Sato

Devices Department, NEC Tohoku, Ltd., 1 Karagai, Ichinoseki, Iwate 021, Japan

J. Manuf. Sci. Eng 119(4A), 550-555 (Nov 01, 1997) (6 pages) doi:10.1115/1.2831186 History: Received July 01, 1993; Revised April 01, 1996; Online January 17, 2008


To explore the feasibility of “oil-free” pressworking, we investigated the effects on the life of SKD11 steel dies and the quality of phosphor bronze workpieces under lubricated and unlubricated or dry conditions. In addition, the performance of SKD11 dies coated with TiN as well as cemented tungsten carbide dies were also examined under dry conditions. Results show that the life of unlubricated SKD11 dies is about half of that under lubricated conditions. The cemented tungsten carbide die gives superior die life and workpiece quality even under dry use conditions.

Copyright © 1997 by The American Society of Mechanical Engineers
Topics: Bronze , Steel , Phosphors , Tungsten
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