H13钢由于具有较高的淬透性和淬硬性,是1种重要的工业用钢,主要用于制造各种热作模具.热作模具在使用过程中,由于表面受到各种物理、化学等作用,其使用寿命较低.着重介绍了几种有利于提高H13钢模具寿命的表面改性技术.可以认为:多元共渗、复合处理及等离子体源离子注入技术均是改善H13钢模具表面性能的有效方法,而激光表面改性技术由于工艺过程中影响因素太多,设备费用昂贵,处理工件形状简单,其应用受到一定限制.
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