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标准热处理卡片上规定,锻模的热处理规程是: (1)淬火(包括预热,加热,保温,冷却); (2)回火(包括预热,加热,保温,冷却——油冷); (3)燕尾回火。根据以上规程,在热处理过程中,燕尾回火时,每三套模子需要5～6小时,耗油量很大(柴油350公斤),很不经济。如果在整个模子回火后,不使它冷却,而直接放到炉上去进行燕尾回火,这样燕尾的加热过程是由摄氏500多度加热到摄氏600度,而不是由摄氏200度加热到摄氏600度,可以减少加热时
The standard heat treatment card stipulates that forging die heat treatment procedures are: (1) quenching (including preheating, heating, insulation, cooling); (2) tempering (including preheating, heating, insulation, cooling - oil cooling); (3) dove tail tempering. According to the above rules, in the heat treatment process, dovetail tempering, every three sets of mold takes 5 to 6 hours, fuel consumption is very large (diesel 350 kg), very uneconomical. If the entire mold after tempering, do not let it cool, and put the furnace to do the dovetail tempering, so dovetail heating process is heated from 500 degrees Celsius to 600 degrees Celsius, rather than from 200 degrees Celsius to Celsius 600 degrees, you can reduce the heating time