大型封头锻件终锻成形规律模拟研究  

Principals of final forging process in modeling and simulating large-scale head

作　　者：谢安[1] 马庆贤[1] 

机构地区：[1]清华大学机械工程系先进成形制造教育部重点实验室,北京100084

出　　处：《锻压技术》2011年第2期1-4,共4页Forging & Stamping Technology

基　　金："十一五"国家科技支撑计划课题(2007BAF02B07)

摘　　要：通过采用物理模拟和数值模拟相结合的方法,研究了大型封头终锻成形过程中塑性成形规律和影响因素,掌握了型砧对于变形以及产生裂纹的影响作用效果。实验结果表明:增大上型砧的倒角有利于减弱心部压实效果,凹型下砧有利于减少锻件下表面裂纹和内部夹杂性裂纹的产生。研究结果对于制定合理的终锻成形工艺具有支撑作用。Some effecting factors and principals in manufacturing a large-scale head were studied by modeling and numerical simulations.The experimental results show that enlarging the rounding of up anvil decreases the deformation at the center of the billet,concave lower anvil is efficiently used in decreasing cracks on the bottom surface and inclusion defects in the samples.The results are significant for new proper forging craft.

关 键 词：大型锻件 大型封头 模拟技术 锻造工艺 

分 类 号：TG316[金属学及工艺—金属压力加工]