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热处理是改变金属材料内部组织结构,充分发挥材料的潜力,提高机械另、部件的质量,延长使用寿命的重要手段。搞好热处理可以使一个另件顶几个另件用,一吨钢材顶几吨钢材用。例如:我国过去生产的汽车齿轮,一般用不到十万公里,长春汽车厂采用可控气氛碳,氮共渗,使齿轮寿命提高到了二十万公里以上。沈阳重型机器厂制造的球磨机大模数齿轮,原用40铬钼钢,经调质处理,使用寿命仅六个月。改用45号钢,经中频埋油淬火,寿命提高到两年半。上海汽车钢板弹簧厂,改革了热处理工艺,使钢板弹簧
Heat treatment is to change the internal structure of metallic materials, give full play to the potential of the material to improve the quality of the other parts, components, an important means to extend the service life. Do a good job of heat treatment can make a few pieces of another top piece, a ton of steel top a few tons of steel used. For example: China’s past production of automotive gear, generally less than one hundred thousand kilometers, Changchun Automobile Plant controlled atmosphere carbon, nitrogen infiltration, so that gear life increased to more than two hundred thousand kilometers. Shenyang Heavy Machinery Factory manufacture of large-modulus ball mill gear, the original 40 Cr-Mo steel, quenched and tempered, the service life of only six months. Switch to 45 steel, oil quenching by IF, life expectancy increased to two and a half years. Shanghai Automotive Leaf Spring Factory, the reform of the heat treatment process, the leaf spring