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本文论述了直接以盐酸气作为催渗剂进行氮化的试验,分析了氯化氢气体对氮化催渗作用的机理。通过常规气体氮化、电解气相催渗氮化、盐酸催渗氮化和加空气盐酸催渗氮化工艺试验,进行对比。试验结果表明,盐酸催渗与电解催渗对于碳钢、合金钢、不锈钢的氮化层深度、硬度和脆性的作用都是近似的;与常规氮化比,金相组织也没有差别,白层略厚,硬度值稍高;盐酸催渗氮化法渗入速度比常规氮化快,具有与电解气相催渗氮化相同的氮化效果,且更为方便,易于掌握,并且消除了封闭式电解水槽可能爆炸的危险,缩短了氮化时间,降低了生产成本。
This paper discusses the experiment of nitriding directly using hydrochloric acid gas as a penetration enhancer, and analyzes the mechanism of hydrogen chloride gas on nitriding. Through routine gas nitriding, electrolysis gas nitriding, hydrochloric nitriding nitriding and air nitriding nitriding process test, comparison. The experimental results show that the effects of hydrochloric acid seepage and electrolysis on the depth, hardness and brittleness of nitrided layers of carbon steel, alloy steel and stainless steel are similar. Compared with the conventional nitriding ratio, the microstructure is not different, white layer Slightly thicker, slightly higher hardness; hydrochloric acid nitriding nitriding infiltration rate faster than conventional nitriding, nitridation and electrolysis with the same nitriding effect, and more convenient and easy to grasp, and to eliminate the closed electrolysis The danger of an explosion in the sink can shorten the nitriding time and reduce the production costs.