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文中介绍了二段气体碳氮共渗工艺,即采用工业煤油和液氨作为共渗剂,并把第一阶段共渗温度控制在860℃供给较大量的煤油,以保证炉内有充足的渗碳气氛,同时通入一定量的氨气,使炉内气氛于短期内得到恢复,在炉内维持一定的氮势。第二阶段共渗温度控制在830℃,供给较大量的氨气,减少煤油的供给量,使此阶段中炉内保证有允分的渗氮气氛。并介绍了碳氮共渗后零件的质量和性能的检查情况。
The article introduces the gas-carbonitriding process of the second stage, that is, using industrial kerosene and liquid ammonia as the infiltrating agent and controlling the first-stage co-permeation temperature at 860 ° C to supply a larger amount of kerosene so as to ensure sufficient infiltration in the furnace Carbon atmosphere, while access to a certain amount of ammonia, the furnace atmosphere to be restored in the short term, maintaining a certain nitrogen in the furnace potential. The second stage of co-infiltration temperature control at 830 ℃, supply a larger amount of ammonia to reduce the supply of kerosene, so that the furnace in this stage to ensure an allowable nitriding atmosphere. And introduced the carbonitriding parts quality and performance inspection.