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前言一九八○年十月至一九八一年七月,我厂接受了大批量的外商产品——瑞典泵叶轮的生产任务。叶轮直径为φ130～190mm。主要用于深井抽吸泥沙与水混合物,在服役过程中多为磨损报废,要求具有较高的强度和硬度,以保证良好的耐磨性能。叶轮的材料原为白口铸铁,硬度要求≥HRC51,其叶面、外圆及中心轴孔等部位,全部采用磨削加工。我厂经过少量试产后,将叶轮材料改
Foreword From October 1980 to July 1981, our factory accepted the production tasks of large quantities of foreign products - pump impellers in Sweden. Impeller diameter φ130 ~ 190mm. Mainly used for deep well suction of sediment and water mixture, wear and tear in the service process mostly scrap, requiring high strength and hardness to ensure good wear resistance. The original material for the impeller white cast iron, hardness requirements ≥ HRC51, its leaves, cylindrical and central axis holes and other parts, all using grinding. I plant after a small amount of trial production, the impeller material change