| 摘要 |
PURPOSE:To prevent development of crack in a mold and to prevent local segregation in a cast billet by spraying carbon particles having less than the specific diameter on the contacting surface with molten metal in the mold in the carbon-series mold to plug pores. CONSTITUTION:The carbon particles 8 having 100 micron diameter, such as acetylene black, etc., are sprayed on the surface contacting with the molten metal in the carbon series mold 1 to plug the pores on the surface of the carbon series mold 1. The mold 1 and a water cooling jacket 2 are set to a holding furnace 4 and a horizontal continuous casting is executed to a phosphor bronze 3 kind. Then, by spraying the carbon particles having less than the prescribed micron at every the prescribed time, even in case the mold for casting is used for more than the prescribed time, the mold does not develop oxidized wear and segregation to keep good condition. By this method, penetration of the molten metal into the carbon series mold is prevented and development of the crack in the mold is prevented, and use for long time is obtd. |
