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


한국주조공학회지 (12권4호 298-304)

Study on Decarburization and Its Prevention of SM50C Steel Casted by the Ceramic Mold Process

세라믹 주형법에 의하여 주조된 SM50C 강의 탈탄과 그 방지에 관한 연구

Seon-Ho Lee*, Kyong-Hwan Lee**, Choon -Sik Kang*

*Seoul Univ., **Korea Academy of Industrial Technology


Decarburization phenomena of SM50C steel casted in ceramic mold was investigated. As result, decarburized depth increased by increased by increasing the volume-to-surface area ratio and mold temperature. And the relations between them is y(cm)=(1.96x10^{-5}T+0.0135)xM- 1.05x10^{-5}T+9.73x10^{-3}. When mold is controlled by Ar ags, reducing atmosphere, decarburized depth is decreased. In case of adding graphite powder in the mold, decarburization is decreased more. Specially, when graphite powder is added on the mold materials and the wax is layed on the mold, decarburization is almost prevented.