一、概述目前工业发达国家对热处理工艺材料的生产和供应都已有专业化生产厂家和专营公司。如西德的Degussa公司就经营各种加热及淬火用盐、各种渗碳剂、氮碳共渗剂及清洗剂等热处理工艺材料。七十年代初,在我国开始建立起了热处理工艺材料专业生产厂,至今已有50多家,但大部分是乡镇企业,在品种、产量上尚不能满足热处理生产发展的需要。为此,于 First, an overview At present, industrialized countries on the heat treatment process materials have been the production and supply of specialized manufacturers and franchise companies. For example, Degussa in West Germany operates a variety of heat treatment materials such as heating and quenching salts, various carburizing agents, nitrocarburizing agents and cleaning agents. In the early 1970s, China began to establish a professional heat treatment process materials manufacturing plant, so far has more than 50, but most of the township enterprises, in terms of variety, yield can not meet the needs of heat treatment and production development. To this end,