鋳鋼における「すくわれ」現象とその対策について

概要

論文の詳細を見る
In casting molten steel into sand mold it was observed that the formation of scabs was closely related to the speed of thermal expansion of sand mold surrounded with molten steel. That is, the formation of scabs was promoted by increasing the maximum rate of thermal expansion or shortening the time needed for the rate of thermal expansion to attain its maximum. during pouring molten steel. As a result of experiment, the analysis of scab defects could be quantitatively performed. To eliminate expansion scabs it needed to reduce the rate of thermal expansion of sand mold as low possible. Addition of various thermal plastic material of 0.2 to 1.0% to molding sand was effective upon reducing scab defects to an extent of one third.
Japan Foundry Engineering Societyの論文