表面合金化是在铸件的凝固过程中一次实现具有特殊性能表层的新型工艺。本文介绍了表面合金化的实验方法、工艺参数以及影响熔合质量的因素,在焦化厂火架车耐磨铸铸底板的生产性试验表明,应用该种工艺铸件耐磨性有很大的提高。 Surface alloying is a new type of process with a special surface layer that is realized once during the solidification of the casting. In this paper, the experimental methods of surface alloying, the process parameters and the factors that affect the quality of fusion are introduced. The production test of the wear-resisting cast-in-cast rebar for the fire truck of coking plant shows that the wear resistance of the castings is greatly improved.