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本文从金属炉料配比、熔炼设备、炉前控制、熔化时参数等方面总结了试制MTVTi30-54的熔铸工艺和生产验证。叙述了自1977年3月正式生产 MTVTi30-54牌号钒钛耐磨铸铁以来,先后生产 C616普通车床、C6432卡盘车床、C5116型立式车床1千余台分,经检验:抗弯强度合格率为89％,其中有38％可达60公斤/毫米~2以上;抗拉强度合格率为85％,其中有52％可达32公斤/毫米~2以上,基本上达到《机床导轨用钒钛耐磨铸铁试行技术条件》的要求。硬度值全部达到试行技术条件要求。文中提出只要按试行技术条件规定的成份配料,熟炼掌握熔铸工艺,是可以达到 MTVTi30-54牌号要求的,而且资源立足于省内,前途宽广。
This article summarizes the casting process and production verification of the trial MTVTi30-54 from the aspects of metal charge ratio, smelting equipment, furnace control, melting parameters and so on. Described since March 1977 formally produced MTVTi30-54 grade vanadium titanium wear-resistant cast iron, has produced C616 ordinary lathe, C6432 chuck lathe, C5116 vertical lathe more than 1 thousand points, the test: the bending strength pass rate Of which 89%, of which 38% up to 60 kg / mm ~ 2 or more; Tensile strength of 85% pass rate, of which 52% up to 32 kg / mm ~ 2 above, basically reached the “ Wear-resistant cast iron trial technical conditions ”requirement. Hardness values all meet the pilot technical requirements. The article proposed that as long as according to the prerequisites for the ingredients of the technical conditions, proficient grasp of casting process, is to achieve the grade MTVTi30-54 requirements, and resources based on the province, a bright future.