Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : July 18, 2024
Bio-coke (hereinafter abbreviated as BIC), which has carbon-neutral properties, has been attracting attention, and it has been clarified that unused rice husks can be converted into BIC and used as a substitute for carburizing materials. In addition, since rice husks contain a large amount of silicon, it is also attracting attention as a silica material, and can be expected as an alternative to Fe-Si alloys. In this study, we investigated the change in the amount of silicon depending on the contact time with molten metal in order to clarify the effect of silica from rice husk BIC. The base metal alloy was melted and cut into 500g pieces and remelted in a double ceramic crucible in an induction melting furnace. When the molten metal temperature reached 1773K, the end faces of the rice husk BIC of φ46mm were added so that they were in contact. As a result, in addition to the carburization action, the silica addition action effectively appeared in the casting process. This result suggested the possibility of green casting.
