<報文>低炭素フェロクロムの製造に關する研究

概要

論文の詳細を見る
In this report, three ways were employed on the decarburization of high carbon ferro-chromium. (1) The method of the oxygen bubbling in the molten alloy was carried to reduce the content of carbon. In this procedure, the content of carbon was rapidly dropped in a short time, but the long time bubbling increased the loss of chromium. (2) The pulverized high carbon alloy mixed with decarburizer such as silica was treated in vacuum at high temperature. The degree of the reducing of the carbon content was found to be correlated the processing temperature, time and the grain size of the powder, and the sintering occured in this treatment. The silica remained in the form of excess oxide or metallic silicon as alloying element. (3) The powder of alloy was heated for partially oxidation in an atmosphere at high temperature. After this treatment, briquetted powder was heated in vacuum. This was the most favorable to reducing the carbon content at 1,400℃.
東北大学の論文
1957-02-20