过去,我厂铜铝件冒口切割采用锯床和手锯,劳动强度大,生产效率低,适应不了生产发展的需要,铸造三车间三结合技术革新小组,在车间党支部领导下,因地制宜,修旧利废,自制一台砂轮切割机,大大提高了切割工作效率;比使用锯床提高7～8倍,比手锯提高35～40倍。同时减轻了劳动强度。自一九七一年投产以来,使用性能良好。 In the past, we used the sawing and hand sawing of the copper and aluminum parts in our factory to cut sawing machines and handsaws. The labor intensity is large and the production efficiency is low. Therefore, we can not meet the needs of production and development. The old waste, made a wheel cutting machine, greatly improving the cutting efficiency; than the use of sawing machine to improve 7 to 8 times, 35 to 40 times higher than the hand saw. At the same time reduce the labor intensity. Since its commissioning in 1971, its performance has been good.