铁液化学成分对铸铁熔炼增碳效果的影响

对铁液中C、Si、Mn、S和P等成分对铸铁熔炼增碳效果的影响进行了研究,结果表明,化学成分C、Si、Mn、S、P对增碳效果有不同的影响,Si影响最大,C、Mn、S次之,P影响较小;铁液中的初始碳量过高不利于碳的吸收和增碳,Si、S、P也阻碍碳的吸收和增碳,而Mn有助于碳的吸收和增碳。在实际铸铁熔炼增碳过程中,应先增锰,再增碳,最后增硅,而且要严格控制铁液中的S、P含量。

The Influence of Molten Iron Chemical Composition on Carbon Pick-Up Effect of Melting Cast Iron

The influence of molten iron chemical composition such as C, Si, Mn, S and P on carbon pick-up effect of melting cast iron was studied. The results indicated that the chemical composition such as C, Si, Mn, S and P had different influence on carbon pick-up effect, hereinto, the influence of Si was the biggest, C, Mn and S took second place, and P was smaller. Moreover, too high initial carbon amount in the molten iron was unfavorable to absorb and increase carbon, and Si, S and P hindered the absorption of carbon and pick-up, but Mn helps to absorb and increase carbon. During practical carbon pick-up of melting cast iron, manganese should be increased firstly, carbon was increased again, and silicon was increase finally, moreover, S and P in the molten iron must be control strictly.