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不同的材质有不同的电磁学特性。同一种材料由于采用不同的工艺进行热处理其结果也会得到不同的电磁学特性。我们利用这一原理,研制了专用装置,对日本40Cr和国产40Cr制成的500余件试件进行了实验室研究,发现测量讯号与硬度之间在存着客观上的对应关系,证明可以用电磁测量方法代替硬度计用于生产。
Different materials have different electromagnetism characteristics. The same material due to the use of different processes for heat treatment results will be different electromagnetic properties. We use this principle, developed a special device, Japan 40Cr made 40Cr made more than 500 pieces of laboratory tests conducted and found that there is an objective relationship between the measurement signal and the hardness of the proves that you can use Electromagnetic measurement method instead of hardness for the production.