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钢铁材料的热处理就是通过对工件的程序加热与冷却,使之达到特定性能所要求组织的工艺,加热是在一定介质中进行的,故而涉及高温下工件与介质间的化学反应。钢材在加热时如果保护得当,处理后不仅能改善其性能,同时也可减少其烧损(氧化),并有助于提高其使用寿命。据统计每辆卡车的热处理工件,如不进行保护,烧损达7.5％,计重40—50kg。又国外的汽车齿轮可行驶20万公里,未经保护的热处理齿轮寿
Heat treatment of steel material is through the workpiece heating and cooling program to achieve the desired performance of the organization of the specific process, the heating is carried out in a certain medium, which involves the high temperature chemical reaction between the workpiece and the medium. Properly protected steel, when heated, will not only improve its performance when processed, it will also reduce its burning (oxidation) and help to increase its useful life. According to the statistics of each truck heat treatment parts, if not protected, burned up to 7.5%, weighing 40-50kg. And foreign car gear can drive 200,000 kilometers, unprotected heat treatment gear life