挤压內衬是挤压生产中的重要工具之一,其加工困难,价格昂贵,是挤压机的主要易损件。生产实践证明,挤压內衬损坏对生产有四方面的影响: 一、挤压內衬与模具两端面接触时,呈现较深的压痕,使表面不光,粘铝,产生“带冒”。二、挤压内衬倒角处局部掉块,使模具 Extrusion lining is one of the important tools in extrusion production, which is difficult to process and expensive. It is the main wearing part of extrusion machine. Production practice has proved that extrusion lining damage on the production of four aspects: First, the extrusion liner and the mold at both ends of the contact, showing a deep indentation, the surface is not only sticky aluminum, resulting in “with the risk.” Second, extrusion lined chamfering at the local block, the mold