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我厂在1979～1980年的几次试验结果表明,应用小钎杆尾端的高频淬火与高频回火工艺,不仅能大大缩短处理时间,提高产品产量,而且“炸顶”和“堆尾”也很少出现。高
The results of several tests in our factory from 1979 to 1980 show that the application of high-frequency quenching and high-frequency tempering at the tail end of the small solder rod not only can greatly shorten the processing time and increase the output of the product, but also “fried top” and " Rarely appear. high