Grinding hardening, the technology of hardening steel piece surface with grinding heat instead of high or medium frequencyinductionhardening heat, can integrate grinding surface hardening.
The highfrequencyinductionhardening can't raise the surface microhardness of the cold precision forging spur gear.
高频感应淬火不能达到硬化冷精锻直齿圆柱齿轮齿面的目的。
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Using infrared system the apparatus of non-touching at limited-area to monitor the hardening temperature at site is produced for high-frequencyinduction heat treatment.