重型机械
重型機械
중형궤계
HEAVY MACHINERY
2015年
1期
40-42
,共3页
轴类大锻件%压方%裂纹%破坏因子
軸類大鍛件%壓方%裂紋%破壞因子
축류대단건%압방%렬문%파배인자
long-axis heavy forgings%squaring%crack%damage factor
长轴类大锻件的锻造过程一般分为压方、拔长和倒棱滚圆三大步骤,目前对锻造工艺研究较多的是拔长和倒棱滚圆的优化,很少有对压方工艺优化的研究。本文从V型砧边缘的圆角半径的大小来对长轴类大锻件的压方过程进行模拟优化,从锻件内部应力、应变及破坏因子三个方面进行对比分析。结果表明,适当增大V型砧边缘的圆角半径可以有效防止锻件裂纹的产生,为锻件的质量提高和结构设计提供一种有效、可靠的分析方法。
長軸類大鍛件的鍛造過程一般分為壓方、拔長和倒稜滾圓三大步驟,目前對鍛造工藝研究較多的是拔長和倒稜滾圓的優化,很少有對壓方工藝優化的研究。本文從V型砧邊緣的圓角半徑的大小來對長軸類大鍛件的壓方過程進行模擬優化,從鍛件內部應力、應變及破壞因子三箇方麵進行對比分析。結果錶明,適噹增大V型砧邊緣的圓角半徑可以有效防止鍛件裂紋的產生,為鍛件的質量提高和結構設計提供一種有效、可靠的分析方法。
장축류대단건적단조과정일반분위압방、발장화도릉곤원삼대보취,목전대단조공예연구교다적시발장화도릉곤원적우화,흔소유대압방공예우화적연구。본문종V형침변연적원각반경적대소래대장축류대단건적압방과정진행모의우화,종단건내부응력、응변급파배인자삼개방면진행대비분석。결과표명,괄당증대V형침변연적원각반경가이유효방지단건렬문적산생,위단건적질량제고화결구설계제공일충유효、가고적분석방법。
According to the characteristics of long-axis heavy forgings.The whole forging process of longaxis heavy forging was divided into three steps,including squaring,stretching and chamfering rounding.Researches of forging process are now focused on the optimization of stretching,but hardly on forging process optimization.By means of DEFORM-3D software,edge radius of V-shaped anvil were simulated and optimized from aspects of internal stress state,stress and the damage factor in squaring process.Results of Simulation show that appropriate edge radius of V-shaped anvil can prevent forging cracks and improve the quality of forgings.