我厂从1978年开始,把几种渗碳件改为碳氮共渗,进行小批量工艺试验,现已基本稳定,并把95%以上的渗碳件改为碳氮共渗,效果较好。一、设备采用RJT-60-9滴注式井式气体渗碳炉。风扇轴的密封由石棉盘根改为水冷套油封装置,提高了炉膛密封性;滴注器增加两个针阀,以通氨气和滴注甲醇;另装U形管压力计以测量炉内压力。 Since 1978, our factory changed several kinds of carburizing parts to carbonitriding and carried out small-scale process tests, which have been basically stabilized, and more than 95% of carburizing parts have been changed to carbonitriding with better effect. . First, the equipment used RJT-60-9 drip type gas carburizing furnace. The fan shaft seal was changed from asbestos packing to water jacket oil seal device to improve the seal of the hearth; two needle valves were added to the dripper to pass ammonia and drip methanol; another U-tube manometer was used to measure the temperature in the furnace pressure.