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活塞是凿岩机中的重要易损零件。过去,我厂活塞的热处理是手工操作,班产量低,劳动条件差,质量不稳定。有的活塞使用寿命可钻孔1800米,而有的仅几十米就报废了。经过无产阶级文化大革命锻炼的我厂热处理车间广大职工,在党支部领导下,组成三结合技术革新小组,经过一年多的艰苦奋战,于1973年2月制成活塞淬火回火自动生产线。生产效率提高一倍多,活塞质量基本稳定,改善
Pistons are important wear parts in rock drills. In the past, the heat treatment of the pistons in our factory was manual operation, with low class output, poor working conditions, and unstable quality. Some pistons can be drilled for 1800 meters in service life, and some are only scrapped for tens of meters. After the proletarian cultural revolution, the workers of the heat treatment plant of our factory, under the leadership of the Party branch, formed a three-combination technological innovation team. After more than one year of hard work, the piston quenching and tempering automatic production line was made in February 1973. The production efficiency has more than doubled, and the quality of the piston has remained basically stable.