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摘要：
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高速钢扁锭锻造成方坯时 ,端面产生较大横向裂纹 ,并向内部扩展 ,为减小端面裂纹大小 ,降低裂口向内延伸长度 ,在微机上采用刚粘塑性有限元分析法对其锻造过程进行模拟研究 ,分析出了形成此裂纹的主要原因 ,据此提出了合理工艺参数和改进的锻造工艺措施。
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While the square billetwas forged from the flat ingot of high- speed steel,the horizontal crack appeared on the butt end and extend to the interior of the billet.To reduce thd crack of butt end and short its extended length,the simulation and research conducted by the rigid- viscoplastic FEM in the microcomputer were carried out and the main reasons of the crack were analyzed.Accordingly,the reasonable parameters and the forging steps were put forward.
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作者简介：
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参考文献：
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1 Altan T.Process Simulation of Hot Die- Forging Pro-cess.Advanced Technology of Plasticity,1988,11(3) :37～41
2 Kobayashi S,Oh S I,Altan T.Metal Foming and Fi-nite Element Method.New York:Oxford University Press,1988:180～ 30 0
3 [美 ]阿尔坦著 ,陆索译 .现代锻造 .北京 :国防工业出版社 ,1984.
4 吕二乐 ,陈红兵 ,周杰等 .用高速钢 W18Cr4V扁锭锻造方坯内部裂纹产生原因研究 .重庆大学学报 ,1995 ,18(6 ) :116～ 12 3
5 张志文 .锻造工艺学 .北京 :机械工业出版社 ,1983.
6 汪大年 .金属塑性成形原理 .北京 :机械工业出版社 ,1982 .
7 喻世禄编著 .高速钢和高速钢锻造 .北京 :国防工业出版社 ,1989.
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