对于精密金属模具的表面硬化法来说,一般要求具备下列特性: (1)表面硬化层与母材的结合性好; (2)硬度高,耐磨损性,耐热性,耐蚀性优越; (3)为了把表面硬化处理的变形控制在最小的限度内,只能用有限的低温处理; (4)能在形状复杂的金属模具上形成均匀的硬化层; (5)表面光滑; For the precision metal mold surface hardening method, the following characteristics are generally required: (1) surface hardening layer and the bonding of the parent material is good; (2) high hardness, abrasion resistance, heat resistance, corrosion resistance is superior ; (3) In order to minimize the deformation of the surface hardening process, only a limited low temperature treatment; (4) in the shape of complex metal mold to form a uniform hardened layer; (5) smooth surface;