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二、淬火加热时间的确定生产中高速钢工件在盐炉内的淬火加热时间是指:工件从放入高温炉中起,到从炉中取出为止的时间间隔,它由升温时间与保温时间两部分组成。升温时间是指工件入炉后要压温(尤其是大工件压温尤为明显),而后炉温重新恢复到工艺规定的温度(即仪表控制的温度)所需要的时间。保温时间包括工件的均热时间和碳化物溶解时间。认为保温时间就是碳化物溶解时间
Second, the quenching time to determine the production of high-speed steel production in the salt furnace quenching heating time refers to: from the workpiece into the furnace, to remove from the furnace up to the time interval, which consists of heating time and holding time two Part of the composition. Heating time refers to the workpiece into the furnace after the pressure (especially the large workpiece temperature is particularly evident), and then the furnace temperature to regain the process temperature (ie, the temperature controlled by the instrument) the time required. Holding time includes the workpiece soaking time and carbide dissolution time. It is considered that the holding time is the dissolution time of the carbide