精密成形工程
精密成形工程
정밀성형공정
METAL FORMING TECHNOLOGY
2015年
1期
42-45,77
,共5页
刘雅辉%刘淑梅%廖世绍%茅德清
劉雅輝%劉淑梅%廖世紹%茅德清
류아휘%류숙매%료세소%모덕청
过滤器%冷挤压%模具系统%数值模拟%刚性平移
過濾器%冷擠壓%模具繫統%數值模擬%剛性平移
과려기%랭제압%모구계통%수치모의%강성평이
filter%cold extrusion%mold system%numerical simulation%rigid translation
目的：基于实际生产经验，分析冷挤压过程中筒形件的刚性平移现象。方法通过数值模拟分析了筒形过滤器冷挤压过程中的折叠和撕裂倾向、金属流动规律和挤压力。结果数值模拟结果表明：在筒形件的冷挤压中，筒状部分有显著的刚性平移现象，即高于凸模工作带的筒状部分在挤压过程中不发生塑性变形，仅沿着凸模挤压的反方向移动。结论金属流动的速度场和位移场，以及挤压载荷变化趋势较直观地反映了筒形件冷挤压中的刚性平移现象，实际生产并获得了表面质量良好的过滤器零件。
目的：基于實際生產經驗，分析冷擠壓過程中筒形件的剛性平移現象。方法通過數值模擬分析瞭筒形過濾器冷擠壓過程中的摺疊和撕裂傾嚮、金屬流動規律和擠壓力。結果數值模擬結果錶明：在筒形件的冷擠壓中，筒狀部分有顯著的剛性平移現象，即高于凸模工作帶的筒狀部分在擠壓過程中不髮生塑性變形，僅沿著凸模擠壓的反方嚮移動。結論金屬流動的速度場和位移場，以及擠壓載荷變化趨勢較直觀地反映瞭筒形件冷擠壓中的剛性平移現象，實際生產併穫得瞭錶麵質量良好的過濾器零件。
목적：기우실제생산경험，분석랭제압과정중통형건적강성평이현상。방법통과수치모의분석료통형과려기랭제압과정중적절첩화시렬경향、금속류동규률화제압력。결과수치모의결과표명：재통형건적랭제압중，통상부분유현저적강성평이현상，즉고우철모공작대적통상부분재제압과정중불발생소성변형，부연착철모제압적반방향이동。결론금속류동적속도장화위이장，이급제압재하변화추세교직관지반영료통형건랭제압중적강성평이현상，실제생산병획득료표면질량량호적과려기령건。
The"rigid translation"phenomenon in cold extrusion process of cylinder parts is studied based on actual production experience in this paper.Numerical simulation was executed to analyze folding and damage tendency, metal flowing law and extrusion force in cold extrusion of filter.Simulation results show that:the rigid translation phenomenon oc-curs markedly at cylindrical wall of cylinder part in cold extrusion.When the cylindrical wall of part gets away from the working tap of punch, it just gets rid of plastic deformation during the subsequent extrusion and only translates in the oppo-site direction of punch motivate.Velocity field and displacement field of metal flowing, as well as the tendency of extrusion load, reflect intuitively the rigid translation phenomenon in cylinder part extrusion.Finally, actual productions were per-formed and cold extrusion parts with a good surface quality were obtained.
