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对于大批量生产的钢制零件,经高频淬火、刚火后,要逐个检测硬度,用布氏硬度计去检测,不仅不能满足生产要求,而且检测的结果只反映了产品局部硬度,误差很大,又在产品上留下压痕和残余应力,应用电磁硬度机就可很方便的逐个检测硬度。沅江机械厂根据电磁感应原理研制的电磁硬度机,分辨率高,检测速度23件/分,在生产中起了重要作用。
For high-volume production of steel parts, the high-frequency quenching, just after the fire, one by one to detect the hardness, with a Brinell hardness test, not only failed to meet the production requirements, but the test results only reflect the local hardness of the product, the error is Large, leaving indentation and residual stress on the product, the application of electromagnetic hardness machine can be very easy to test the hardness one by one. Yuanjiang Machinery Factory based on the principle of electromagnetic induction developed electromagnetic hardness machine, high resolution, detection speed of 23 / min, played an important role in the production.