鋳鋼の浸透型焼着に関する研究

抄録

  Factors affecting metal penetration into sand mold have been investigated on an experimental scale by an apparatus developed by the authors which is capable of simulating actual conditions in heavy section steel casting. Preheated sand molds were immersed in molten steel melted by high frequency induction furnace in a pressure vessel and gas pressure was applied to the upper surface of molten steel in order to make the molten steel penetrate into sand mold.
  It is shown that the higher the temperature of molten steel, the larger the depth of penetrated layer is, and metal penetration does not occur at the liquidus temperature of molten steel. The depth of the penetrated layer increases with increasing gas pressure and holding time. The resistance against metal penetration of cold-setting sand mold is worse than that of dry sand mold, and chromite sand has better resistance against metal penetration than silica sand. Zircon wash used has little effect on preventing metal penetration into sand mold.