抄録
Carbon-clay slurry is well used for sand mold washes. The combustibility of carbon of the slurry is an important factor having influence upon the condition of the surface of castings. In experiments, carbon such as coke, amorphous or crystalline graphite was mixed with kaolin or bentonite to make mold wash. To study the combustibility of those mold washes measurement was made on samples of a thin film form. The method of measuring the combustibility of mold washes in a thin film form was newly designed by the authors and proved successful. As a result of the experiment, it was known that coke, natural amorphous graphite and natural crystalline graphite stood in order of the combustibility, namely coke showing the highest combustibility and natural crystalline graphite the lowest. The combustibility of mold washes was reduced by adding clay to carbon material.
