在工模具表面涂覆一层超硬物质,例如碳化钛、氮化钛等,可以使工模具的使用寿命提高几倍到几十倍。因此对涂覆工艺的研究引起了国内科技人员很大的重视。目前碳化钛、氮化钛涂覆工艺分为固体法、液体法和气体法。现就了解的每种方法的国内外发展情况稍加介绍。一、固体法 In the mold surface coated with a layer of superhard materials, such as titanium carbide, titanium nitride, etc., can make the life of the mold several times to several times. Therefore, the study of coating technology has aroused great attention of domestic scientific and technological personnel. At present, titanium carbide, titanium nitride coating process is divided into solid method, liquid method and gas method. A brief introduction on the development of each method at home and abroad is given. First, the solid method