Hot forging with consideration of thermal conductivity of die material on servo press

摘要：

Effects of thermal conductivity of die material on forging characteristics in hot forging process were examined using tungsten carbide (WC-20mass％Co, approximately 70 W/(m·K)) and stellite (Co-28mass％Cr, approximately 15 W/(m·K)) dies. Die quenching of a chrome steel was carried out on a servo press by controlling ram motion of the press. Rapid cooling of hot-forged specimen (approximately 300 K/s) was realized by contacting to tungsten carbide die just after hot forging. On the other hand, stellite die reduced forging load by approximately 25％ because the die with low thermal conductivity was effective to keep the specimen to be high temperature during hot forging. Furthermore, stellite die was effective to fill the specimen into a small cavity of the die.

关键词： forging servo press die thermal conductivity

作者: R.Matsumoto Y.Osumi H.Utsunomiya

作者单位: Division of Materials and Manufacturing Science,Graduate School of Engineering,Osaka University,Japa Division of Mechanical Engineering,Graduate School of Engineering Science,Osaka University,Japan

会议类型: 国际会议

会议名称: The 12th Asian Symposium on Precision Forging 第12届亚洲精密锻造学术研讨会 ASPF2012

会议地点: 苏州

会议语种:英文

页码: 39-43

在线出版日期: 2012-10-21（万方平台首次上网日期，不代表论文的发表时间）