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1Cr18Ni9不锈钢为了提高耐磨性而进行氮化,一般在氮化前先在炉外用HCl处理表面氧化膜,此种方法生产周期长且氮化层质量不易保证,本文系根据苏联1958年所创炉内同时处理氧化膜与氮化方法进行实验所得结果写成,内容主要介绍用氯化铵强化氮化过程的理论依据,实验设备,工艺,操作及实验结果等。根据实验结果:1Cr18Ni9钢用HCI处理后在550℃48小的氮化所得氮化层深度为0.07—0、09mm;但用氯化铵在同样加热规范下所得氮化层深度为0.14—0.16mm;若在580℃48小时则为0.18—0.21mm。证明新工艺有强化效果,表面硬度高,氮化层分布均匀,与不脆等优点。
1Cr18Ni9 stainless steel in order to improve the wear resistance and nitriding, nitriding before the general use of HCl in the furnace surface oxide film treatment, this method is long production cycle and the quality of the nitride layer is not easy to guarantee, this article is based on the Soviet Union in 1958 In the same time, the results of processing the oxide film and the method of nitriding are written into the content, which mainly introduces the theoretical basis of the process of strengthening the nitriding with ammonium chloride, the experimental equipment, process, operation and experimental results. According to the experimental results: 1Cr18Ni9 steel HCI treatment at 550 ℃ 48 small nitriding nitriding layer depth of 0.07-0,09mm; but the same heating with ammonium chloride under the nitride layer depth of 0.14-0.16mm ; 0.18-0.21 mm at 580 ° C for 48 hours. Prove the new technology has a strengthening effect, high surface hardness, nitride layer evenly distributed, and not brittle and so on.