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我厂原是生产水泵、水轮机的地方企业,73年开始生产球墨铸铁。74年厂里接受生产2.5吨支农汽车任务,汽车底盘上有许多零件是可锻铸铁件(KT35—10)。由于条件限制,我们要上可锻铸铁有困难,便用韧性球铁(QT40—10)代替可锻铸铁。经过几年的生产实践,深刻体会到,只要发动群众,采取严肃的科学态度,不断总结球铁的生产工艺,认真抓好球铁的质量管理,就完全可能用地方生铁生产出优质的球铁件,代替可锻铸铁制造汽车零件。三年多来,我们合理地选用地方生铁(主要是阳春生铁)生产了球铁汽车零件二百多吨,水轮机零件二十多吨,经过几年行车的初步考验,未发现什么大问题。几年来,我们排除“四人帮”的干扰,认真做好球铁质量管理工作,逐步充实了
Our factory is the original production of pumps, turbines, local enterprises, 73 years began producing ductile iron. In the 74-year factory, it was tasked with producing 2.5 tons of agricultural vehicles. There are many parts on the car chassis that are malleable iron castings (KT35-10). Due to the limited conditions, we have difficulty in making malleable cast iron, and we use ductile ductile iron (QT40-10) instead of malleable cast iron. After several years of production practice, I deeply realized that as long as mobilize the masses, adopt a serious scientific attitude, and constantly summarize the production process of ductile iron, do a good job in the quality management of ductile iron, it is entirely possible to use local pig iron to produce high-quality ductile iron Pieces, instead of malleable iron manufacturing auto parts. In the past three years or so, we have rationally selected local pig iron (mainly Yangchun pig iron) to produce more than 200 tons of ductile iron parts and over 20 tons of turbine parts. After several years of preliminary tests, no major problems were found. In the past few years, we have eliminated the interference of the “gang of four” and conscientiously managed the ductile iron quality and gradually enriched