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国内齿轮类渗碳零件的渗碳层深度设计均与国外相同(如模数×15～20%),而渗碳层深度的测量方法却与国外不同,国外多采用“硬度测量法”(如ISO2639)测量渗碳淬火层有效深度,国内则多用“组织测量法”(如JB1673—75)测量渗碳层深度。这样一来,由于不同的测量方法对渗层深度的定义不同,因而对化学成分相同的渗层,“组织测量法”测得的渗
The depth of the carburized layer of domestic gear type carburizing parts are designed the same with foreign countries (such as modulus × 15-20%), while the depth of carburized layer measurement method is different from abroad, the foreign use of “hardness measurement method” (such as ISO2639) measure the effective depth of carburizing and quenching layer, the domestic multi-use “tissue measurement method” (such as JB1673-75) measure the depth of carburizing layer. As a result, due to different measurement methods on the definition of the depth of the infiltration layer, so the chemical composition of the same infiltration layer, measured by the “tissue measurement” of the seepage