摘要
Abstract
For heading extrusion compound forming process of billet in common when it is squeezed out the problem of insufficient height,using the Deform software to simulate the cylinder free end unconstrained composite upsetting extrusion molding,for heading extrusion forming process was analyzed,the mechanical parameters and deformation law as well;respectively from two aspects of theory and simulation research.The extrusion and backward extrusion were studied under two different modes of upset compound forming law,to simulate different materials,to diameter of extrusion deformation law of channel,and drawing punch stroke and squeeze out the length of the curve.The research results show that the composite upsetting extrusion molding of extrusion and backward extrusion deformation law is consistent,when the extrusion channel diameter is in the range of 20-25 mm,the friction coefficient is in the range of 0.2-0.4,appropriately to lower the height of the billet diameter ratio,expanding extrusion channel diameter,increase all improve the extrusion billet high friction coefficient.When the friction coefficient is 0.35,the diameter of the extrusion channel is 25 mm,extrusion height is maximum.关键词
镦挤/通道直径/摩擦因数/有限元/数值模拟Key words
upsetting extrusion/channel diameter/friction coefficient/finite element/numerical simulation分类
矿业与冶金
