一项技术革新成果,使我们实现了薄片零件(各排气阀片)研磨机械化,改变了过去手工操作的落后面貌,提高生产效率十倍。过去用手工操作每班只能研磨3～4片,工人还累得很,而且经常出现手部磨伤的现象,现在改用一台研磨工具,每班能磨40～50片(80面～100面),并使工人摆脱了繁重的体力 A result of technological innovations enabled us to realize mechanization of lapping of sheet parts (exhaust valves), changing the backwardness of past manual operations and increasing the production efficiency tenfold. In the past, only 3 to 4 tablets of each class could be ground by hand. Workers were still very tired and often had hand abrasions. Instead, they switched to using a grinding tool, which can grind 40-50 tablets (80 ~ 100 faces) and to free workers from their heavy workload