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pISSN : 1598-706X / eISSN : 2288-8381


한국주조공학회지 (3권2호 100-105)

The Mechanism of Inhibiting Burn-on Sand to Iron Castings by Coal-dust (Seacoal) for a Molding Sand Additive.

주형에서 석탄분 첨가제(시콜)에 의한 주철주물의 소착억제기구에 관하여

Yung Myung HONG, Yeong Sang LEE, Dong Ok KIM



The mechanism of coal-dust action on inhibiting burn-on of Sand to iron castings was taken in consideration by means of casting test and thermal decomposition test. To compare the ability of inhibiting sand burn-on, test castings were produced in green sand moulds added three different coal-rusts. And quantitative determination of lustrous carbon and volatiles production for coal-dust samples were performed.The lustrous carbon production was in good agreement with the casting test result. But total voltiles production was relatively inefficient on hibiting sand burn-on to test castings.The lustrous carbon theory can be given to explain the mechanism which coal-dust inhibits sand burn-on to iron castings.