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批林批孔以来,农机工业飞速发展,球铁的需要量也日益增长。如何立足本地资源,用土焦浇铸符合性能要求的球铁,就成为目前球铁生产中需要迫切解决的问题。遵照毛主席“备战、备荒、为人民”的教导,我们于一九七三年九月份,用耀县焦、本溪生铁生产了一批295型柴油机齿轮。长期以来,我们坚持实践第一的观点,把革命精神和严格的科学态度结合起来,认真研究,反复试验,经过不断努力,初步掌握了用土焦浇铸球铁的热处理规律。目前,我们已用此工艺热处理了六千余只高硫高硅球铁齿轮,从而消除了以往生产球铁非用北京焦炭不可的思想顾虑。
Since Lin approved the hole, the rapid development of agricultural machinery industry, ductile iron needs are also growing. How to base on the local resources, casting coke with ductile iron to meet the performance requirements of ductile iron has become the current ductile iron production needs urgent solution to the problem. Following Chairman Mao’s teachings of “preparing for war, preparing for waste and serving the people”, in September 1973, we produced a batch of 295 diesel gear wheels from Yao County Jiao and Benxi pig iron. For a long time, we insisted on practicing the first point of view, combined the revolutionary spirit and strict scientific attitude, carefully studied and tested repeatedly. After continuous efforts, we initially mastered the law of heat treatment for casting ductile iron with coke. At present, we have used this process to heat-treat more than 6000 high-sulfur and high-silicon ductile iron gears, thereby eliminating the previous production of ductile iron Beijing not to use the ideological concerns.