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为提高Cr12、Cr12Mo、Cr12MoV钢冷镦凹模的质量,延长其使用寿命,我厂采用氨、乙醇气体氮碳共渗工艺,取得明显效果。 1.设备氨、乙醇气体氮碳共渗是利用RJJ-35-9T井式气体渗碳炉,略加改装。为提高密封性,将风扇轴颈处的石棉盘根套改为外水冷双迷宫密封套;点火帽口加装减压筒,使废气易于燃烧。液氨瓶中的氨液减压汽化,通入储气罐(0.07m~3)保持2～4kgf/cm~2压力。氨
To improve the quality of Cr12, Cr12Mo, Cr12MoV steel cold heading die, to extend its life, I plant ammonia, ethanol gas nitrocarburizing process, and achieved significant results. 1. Equipment ammonia, ethanol gas nitrocarburizing is the use of RJJ-35-9T gas well carburizing furnace, a slight modification. In order to improve the sealing performance, the asbestos packing set on the fan journal should be changed to a water-cooled double labyrinth packing case. The ignition cap should be equipped with a decompression cylinder to make the exhaust gas easy to burn. Ammonia liquid ammonia bottle vacuum evaporation, access to the gas tank (0.07m ~ 3) to maintain 2 ~ 4kgf / cm ~ 2 pressure. ammonia