坯料自加热炉中取出到锻锤或液压机上进行成形加工过程中,如何使它保持在热加工工艺规程要求的温度,这是锻造工业历来面临的一项任务。坯料自炉内取出后的冷却速度直接影响到可用来进行热加工的时间。防止热量损失的一个办法是把锻件用薄的障板围起来或者使用热罩。这些装置一般可减少最高达50％的热量损失,但必须把它们安放 It has always been a task for the forging industry to keep the billet at the temperature required for thermal processing procedures by removing it from the furnace for forging or hydraulic presses. The cooling rate of the billet after it is taken out of the furnace directly affects the time available for thermal processing. One way to prevent heat loss is to use forged pieces with a thin baffle or heat shields. These units generally reduce heat loss up to 50%, but they must be placed