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文中阐述该厂在制造53519型轴承时,对轴承中挡圈进行了气体软氮化试验,自行设计制造了一台软氮化用的30KVA电阻炉,所采用的氮化剂为颗粒状的尿素。气体软氮化的工艺过程是清洗——装炉——排气——软氮化——冷却。经软氮化后的零件表面渗入了大量的氮,同时也渗入了少量碳,在表面层形成大量氮化物和少量碳化物,从而提高了零件的耐磨性能、疲劳强度和抗腐蚀性能,同时改善了零件的抗咬合和抗擦伤性能。
The article describes the factory in the manufacture of 53,519-type bearings, the ring in the bearing gas soft nitriding test, to design and manufacture of a soft nitriding 30KVA resistance furnace, the nitriding agent used for the granular urea . Gas nitrocarburizing process is cleaning - loading furnace - exhaust - soft nitriding - cooling. Nitrocarburized parts surface penetration of a large number of nitrogen, but also infiltrated a small amount of carbon in the surface layer of a large number of nitrides and a small amount of carbide, thereby enhancing the wear resistance of parts, fatigue strength and corrosion resistance, at the same time Improved part seizure and mar resistance.