挤压件常见缺陷及预防措施

The Usual Defects of Parts and Precautionary Measures in the Cold Extrusion

分析了挤压件变形机理,指出了常见的缺陷,提出了预防这些缺陷的措施:改善死角区的剪裂和折迭、挤压缩孔、裂纹等;改善润滑条件和采用带锥角的凹模;减小摩擦力;加反作用力;高速挤压等其它办法。

It analyses the deformation mechanism of parts produced by extruding, points out the usual defects and gives the measures on how to prevent these defects ,to improve the share fracture fold of dead-corn, extruding skrinkage and crack , to improve lubrication condition and to adopt die with cone-angle,to reduce fricational force and to add counter acting force, to put to use high-speed extrusion formation and other methods.