四、第一代表面工程方法 １．固态淬火（硬化） 加热的各项工艺参数、材料的初始组织和机件的具体几何形状，都对材料的组织和性能、淬硬的深度和机件的表面质量有很大的影响。在我们的试验研究中，对各种不同的结构钢和工具钢以及某些铁进行了研究，采用的加热方式为将需要淬 Fourth, the first generation of surface engineering methods 1. Solid state hardening (hardening) of the heating process parameters, the initial organization of the material and the specific geometry of the workpiece, both the organization and performance of the material, the depth of hardening and the surface quality of the workpiece has a great impact. In our pilot study, various structural and tool steels and some of the iron were studied using a heating method that would require quenching