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软氮化是一种新型氮化法,目前国内外多采用液体软氮化,其实质就是在含有氰酸盐的盐浴中进行低温(一般520～580℃,1～3小时)氮碳共渗.在软氮化处理时,零件表面渗入了大量氮,同时也渗入少量碳,在表面层形成大量氮化物和少量碳化物,从而改善零件性能,延长使用寿命.由于软氮化处理后渗层硬度低于普通氮化,不脆而富有韧性,因此得软氮化的名(但这一名词并不十分恰当).
Soft nitriding is a new type of nitriding method. At present, most domestic and foreign countries use liquid nitrocarburizing. In essence, nitrocarburizing is carried out in salt baths containing cyanate at a low temperature (generally 520-580 ° C. for 1-3 hours) Infiltration in the soft nitriding, parts surface infiltration 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 improving the performance of parts and prolong the service life due to soft nitriding after seepage Layer hardness is lower than ordinary nitriding, not brittle and toughness, so the name of nitriding (but the term is not very appropriate).