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滴控式气体渗碳是一项比较成熟的热处理生产技术。五十年代工业发达国家已经开始普及应用吸热式可控气氛气体渗碳,并用控制气氛露点的方法实现了渗层的碳势控制。在此之前,一些机械工厂便采用了滴煤油、苯、甲苯或二甲苯等滴剂的井式炉滴注式气体渗碳技术。和固体渗碳比较,滴注式气体渗碳缩短了工艺周期,改善了渗层组织,避免了渗层表面过度渗碳,改善了工人劳动条件,但这种方法不能控制渗层的要求含碳量,而且滴剂数量随被渗零件表面积的不同而不同,
Drop-controlled gas carburizing is a relatively mature heat treatment production technology. The developed countries in the 1950s have started to popularize the use of endothermic controlled atmosphere gas carburizing and control the carbon potential of the permeable bed by controlling the dew point of the atmosphere. Prior to this, some machinery factories have adopted a drop-in-place gas carburizing technology of dropping kerosene, benzene, toluene or xylene and other drops. Compared with solid carburizing, drip gas carburization shortens the process cycle, improves the infiltration layer structure, avoids excessive carburization on the surface of the infiltrated layer and improves the working conditions of workers. However, this method can not control the carburizing requirement of the carburized layer Quantity, and the number of drops with seepage parts surface area of different,