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重型机床按重量计80%以上是铸铁件。为了减轻机床重量,延长使用寿命,降低成本,要求铸铁件的强度高,耐磨性好。一般灰铸铁无法满足这一要求,孕育铸铁、磷系铸铁和其他合金铸铁虽然强度和耐磨性比灰铸铁好,但它们都要求有足够比例的废钢作炉料,因而推广起来有一定困难。为了解决这个问题,我厂广大工人、革命干部和革命技术人员遵照伟大领袖毛主席“我们必须打破常规,尽量采用
Heavy machine by weight of more than 80% is cast iron parts. In order to reduce the weight of the machine, extend the service life, reduce costs, requiring high strength cast iron, wear resistance. General gray cast iron can not meet this requirement. Although cast iron, phosphorus-based cast iron and other alloyed cast iron are better in strength and wear resistance than gray cast iron, they all require a sufficient proportion of scrap to be used as a charge, which makes it difficult to promote them. In order to solve this problem, our factory workers, revolutionary cadres and revolutionary technicians follow the great leader Chairman Mao. "We must break the routine and try to adopt