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重工业部在1953年4月颁布的‘钢铁标准规格’中得22-52里面规定,经热处理后的18和9钢,在检验硬度前,它们的配火(淬火后)制度为:在560°配火两次,每次1小时(试样直径10～12公厘)。一般作为工具用的钢,对它们在最终热处理时的配火制度,建议加热到550～570℃,配火2～4次,每次1小时;这里的配火次数,主要是根据工具尺寸及淬火制度而决定。按标凖中所订的淬火制度处理,并按上述制度配火后,钢的硬度为Rc63～65。高速工具钢的配火制度与所有的热处理制度一
The Ministry of Heavy Industry stipulates in 22-52 of ’Steel Standard Specification’ promulgated in April 1953 that the heat-treated 18 and 9 steels have their system of post-quenching (quenching) before hardness testing at 560 ° Match the fire twice, each time 1 hour (sample diameter 10 ~ 12 mm). Generally used as a tool steel, their final heat treatment with the fire system, it is recommended to heat to 550 ~ 570 ℃, with fire 2 to 4 times, each 1 hour; where the number of matches, mainly based on tool size and Quenching system and decided. By standard 淬 set in the quenching system, and according to the above system with fire, the hardness of steel Rc63 ~ 65. High-speed tool steel fire system with all the heat treatment system one