流态床渗氮工艺的研究  

Study on the Nitriding Process in the Fluidized Bed Furnace

作　　者：郑经纮 叶伟江[1] 沈甫法[1] 李柏军 

机构地区：[1]上海交通大学,上海200030

出　　处：《金属热处理》1995年第6期21-23,共3页Heat Treatment of Metals

摘　　要：本文对3CrZW8V、H13及38CrMoAl钢在刚玉流态床中进行了渗氮工艺的研究。结果表明，氨气在25％～65％范围内变化时，对渗氮结果无明显的影响，在流态床中渗氮可减少工件表面化合物层的形成和加快渗氮的速度。采用脉冲渗氮方法可获得与非脉冲渗氮同样的效果，同时可降低耗气量。The investigation of nitriding in the corundum fludized bed furnace was carried out. The tested steels are 3Cr2W8V,H13 and 38CrMoAl. The experiment result indicates that,the effect of the NH3/(N2+NH3)ration on the nitriding results is not obvious in the variation of 25% to 65% NH3 but nitriding in fluidized bed can reduce the compound zone and increase the nitriding rate. Fluid-pulse nitriding treatment can obtain the same results as those of conventional nitriding in a fluidized bed furnace, but gas consumption is effectively reduced.

关 键 词：渗氮 流态化炉 化学热处理 

分 类 号：TG156.82[金属学及工艺—热处理]