抄録
A study was carried out to find the influence of the melting condition−temperature and holding time of melt after the addition of ferro-silicon−on the graphitization and the casting structure of white cast iron containing about 3% carbon and 1% silicon. The behavior trends of the melting condition were discussed in connection with the amount of gaseous elements existing in iron. From the results, the changes in the rate of graphitization and the casting structure of white iron primarily seems to be due to a change in the amount of the gaseous elements which has respect to the melting condition.
It is concluded that the graphitization becomes difficult with increasing the amount of iron oxide and nitrogen, but the influence of nitrogen content is not appreciable at the first stage graphitization, and that the finer structure of white iron is obtained with increasing the amount of silica, or with decreasing the amounts of iron oxide and nitrogen.
