过去由于受到设备和电源的限制,我厂生产的高速钢刃具一直在焦炭炉中直接加热,因此工件表面氧化很严重,质量不稳定,生产率低。在生产大跃进中,同志们根据电源不足的情况,自己修建了一座焦炭加热的高温盐浴炉,经 In the past due to equipment and power constraints, I plant the production of high-speed steel cutting tool has been directly heated in the coke oven, the workpiece surface oxidation is very serious, unstable quality, low productivity. In the Great Leap Forward of Production, comrades built a high-temperature salt-bath stove heated by coke according to the shortage of power supply.