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前言在RCM白口铸铁磨球生产过程中发现,只要换用高磷地方生铁,其机械性能特别是冲击韧性就显著下降,此外,磨球内部还会出现大量缩松导致产品报废。我国大多数地方生铁含磷较高,新疆跃进钢铁厂生产的地方生铁含磷通常在0.3％以上。为了探讨利用这种高磷地方生铁生产RCM铸铁的可能性,我们对磷在RCM铸铁中的存在状态及其对冲击韧性和硬度的影响进行了研究,并就如何克服磷的不利影响,在铸造方法及热处理方面做了有益的探索。一、试验条件及方法实验主要在实验室进行,铁水在30kg中频感应
Preface In the RCM white cast iron ball manufacturing process found that as long as the exchange of high-phosphorus local pig iron, the mechanical properties, especially the impact toughness decreased significantly, in addition, there will be a large ball mill shrinkage led to product scrapment. The phosphorus content of pig iron is high in most parts of our country. The phosphorus content of pig iron produced in Xinjiang Yuejin Iron & Steel Factory is usually above 0.3%. In order to explore the possibility of producing RCM cast iron from pig iron with high phosphorus content, we studied the existence of phosphorus in RCM cast iron and its influence on impact toughness and hardness. In order to overcome the adverse effect of phosphorus, Methods and heat treatment done a useful exploration. First, the test conditions and methods The experiment is mainly carried out in the laboratory, hot metal induction in the 30kg IF