一、引言盐浴软氮化工艺(实质上是盐浴氮碳共渗工艺)最早是西德德古沙公司在五十年代发明的。此后,经过不断完善。它具有渗氮速度快、处理时间短、工件变形小、化合物层厚度较薄、韧性好、盐浴无毒等特点,因而在西欧、日美等发达国家得到了广泛应用。二、盐浴软氮化新工艺发展过程该工艺传到美国、日本后,通过改进,才形成目前的第三代工艺。 1、第一代工艺——Tufftride—→WQ(水冷) 该工艺称Tufftride。工艺过程见图 First, the introduction salt bath soft nitriding process (essentially salt bath nitrocarburizing process) was first invented in the fifties of the West Germany and Gusha. Since then, continuous improvement. It has the advantages of fast nitriding speed, short processing time, small deformation of the work piece, thin compound layer thickness, good toughness and nontoxic salt bath. Therefore, it has been widely used in developed countries such as Western Europe, Japan and the United States. Second, salt bath soft nitriding new process development process The technology spread to the United States, Japan, through improvement, only the formation of the current third-generation technology. 1, the first generation of technology - Tufftride- → WQ (water-cooled) This process is called Tufftride. Process shown in the figure