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目前,用低碳钢制造工件,为防止非渗透部分渗碳,一般有两种方法:一、渗碳前在非工作尺寸部位局部镀铜,然后再渗碳淬火。二、在非工作尺寸部位加大1.5～2毫米余量,渗碳后先送机加工切削加大的余量,再转热处理淬火。这两种方法虽能满足工艺要求,但工序繁琐,且浪费人力、物力、电力。从76年开始,我们学习外地经验,在部分低碳钢工件生产上运用了防渗碳涂料。配方有五种。
At present, the use of low-carbon steel manufacturing parts, in order to prevent non-permeation part of carburizing, there are two general methods: First, before carburizing non-working parts of the local copper plating, and then carburizing and quenching. Second, in the non-working size parts to increase 1.5 to 2 millimeters margin, carburizing and then sent to the machined cutting allowance, and then heat treatment quenching. Although these two methods can meet the technical requirements, but the tedious process, and a waste of manpower, material and electrical power. Since the beginning of the 76th, we have studied field experience and used anti-carburizing coatings on some low-carbon steel parts. There are five formulas.