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目前,国内多数厂家对渗碳、碳氮共渗产品层深仍采用金相法,随着国际检测方法的改进,我国也对某些技术文件进行了修订。国家机械工业部,农业机械工业局在JB/NQ26-85标准中对渗层深规定用维氏硬度测量有效硬化层深度,在9.8N载荷下从成品齿面测至HV550处,此处至表面距离为有效硬化层深度为了贯彻新标准,保证产品质量,我们对用维氏硬度测量有效硬化层深度在生产中的实际应用做了一些工作,实际工作中发现用这种方法测量渗碳,碳氮共渗有效硬化层深度,与金相显微镜测量方法相比,工作
At present, the majority of domestic manufacturers of carburizing, carbonitrided products are still using deep layer metallurgical method, with the improvement of international testing methods, China has also revised some technical documents. National Machinery Industry, Agricultural Machinery Industry Bureau in the JB / NQ26-85 standard for the depth of the coating layer Vickers hardness measurement of effective hardened layer depth, measured from the finished tooth surface to HV550 at a load of 9.8N, here to the surface Distance to the effective depth of the hardened layer In order to implement the new standard and ensure the quality of products, we have done some work in the practical application of measuring the effective hardened layer depth with the Vickers hardness. In practice, we found that carburizing, carbon Nitriding effective hardened layer depth, compared with the metallographic microscope measurement method