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近年来,由于我国机械制造部门新产品大量出现,对铸件质量要求不断提高,因此迫切需要严格控制铁水温度和成分,并希望通过铁水的高温过热来消除合金溶液中的气体杂质,从而达到降低铸造废品率和提高铸件机械性能。为达到这个目的,我厂于1973年10月试验成功了一台三吨无铁芯工频感应电炉。该炉经两次打结炉衬熔炼,情况良好。第一次打结的炉衬,在熔炼85炉后,进行了破坏性观察,发现烧结良好,还可再使用。第二次打结的炉
In recent years, due to the emergence of a large number of new products in China’s machinery manufacturing sector, casting quality requirements continue to increase, so the urgent need to strictly control the hot metal temperature and composition, and hope that hot metal overheating to eliminate the alloy gas impurities in solution, so as to reduce the casting Reject rate and improve casting mechanical properties. To achieve this goal, I plant in October 1973 successfully tested a three-ton coreless frequency induction furnace. The furnace was twice knotted furnace lining smelting, in good condition. The first knotted lining, after melting furnace 85, conducted a destructive observation, found that sintering well, but also re-use. The second knot stove