成形速度对转向节热挤压系统的影响  

Effects of Forming Velocity on Knuckle Hot Extrusion System

作　　者：李路[1] 周杰[1] 王贵华[1] 卢先正[1] 

机构地区：[1]重庆大学材料科学与工程学院,重庆400044

出　　处：《热加工工艺》2010年第5期95-97,共3页Hot Working Technology

摘　　要：针对转向节热挤压模具寿命普遍低下的问题,采用有限元数值模拟方法研究了不同成形速度对热挤压系统力、热两方面的影响规律。结果表明:在转向节热挤压过程中,最大挤压力、凹模应力集中区最大主应力、挤压锻件最高温度、模具表层最高温度均随成形速度的增加而增大。这对如何减缓模具失效、提高模具寿命提供了理论参考。Aiming at widely existing problems such as low die service life in knuckle hot extrusion process, the effects of various forming velocities on knuckle hot extrusion system about pressure and temperature are studied by FEM simulation. The results show that the faster the velocity of forging equipment, the higher the maximum extruding force, maximum principal stress, maximum part temperature and maximum die surface layer temperature. It provides a reference on improving extrusion die life based on forming velocity perspective.

关 键 词：转向节 热挤压 成形速度 有限元 

分 类 号：TG315.2[金属学及工艺—金属压力加工]