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前言大家都知道,活塞是凿岩机中负荷最重、服役条件恶劣、消耗量最大的关键易损零件。过去,由于质量不好,使用寿命太低,配件供需矛盾很大,一直是生产厂和矿山使用中的关键问题。一九七二年以前,我厂生产的活塞,矿山反映质量很不稳定,使用寿命很低。在七二年一机部组织的同行业八种气腿式凿岩机矿山对比试验中,我厂活塞的寿命,高的高,低的低,平均寿命只有500米左右,个别的甚至装上机器打不到一个班就坏了。这不仅影响
Foreword We all know that the piston is the heaviest load in the rock drill, poor service conditions, the largest consumption of the most vulnerable parts. In the past, due to poor quality and low service life, the contradiction between the supply and demand of spare parts was great. It has been a key issue in the use of production plants and mines. Before 1972, the quality of the piston and mine produced by our factory was very unstable and the service life was very low. In a comparative study of eight kinds of gas-legged rock drill mines in the same industry organized by a machine department in 1972, the lifespan, high, low and average life of the pistons of our factory is only about 500 meters. Some even have machines loaded Less than a class is broken. This not only affects