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对以珠光体为基体的铸态球墨铸铁汽车曲轴,基体组织中珠光体的百分含量是个非常重要的技术参数。按有关生产厂的技术文件规定,珠光体在70％以上为合格品,低于15％为废品,在65～70％时要专门在后续高频淬火工序中重新调整工艺参数来挽救。珠光体含量的检测。目前仍然采用常规的金相方法,此种检测方法存在着周期长、劳动量大,浪费大量的金属材料,并要求检测人员具有相当的技术水平和丰富的实践经验,
To pearlite as a matrix cast nodular cast iron automobile crankshaft, pearlite matrix percentage of the body is a very important technical parameters. According to the technical documents of the manufacturer, pearlite is more than 70% of the qualified products, less than 15% of the waste, 65 to 70% in the subsequent high-frequency quenching process to re-adjust the process parameters to save. Pearlite content of the test. At present, the conventional method of metallography is still adopted. Such detection methods have a long cycle, a large amount of labor, and waste a large amount of metal materials, and require the inspectors to have considerable technical level and rich practical experience.