electric melting mold the remelting (core remeIting)
, rushed into the hollow ingot mold electroslag remelting metallurgy process. The process to fill the spindle center with molten steel after remelting can improve the quality of the ingot in the center of available dual metal ingot. Common method of casting the ingot during solidification, due to the separation were the crystallization of various alloying elements in the metal gradually enriched in the solidification of the molten metal in the ingot and the solidification of liquid metal flow due to the ingot, the ingot center area there will be a variety of segregation band; metal solidification shrinkage appears loose, cratering the ingot center. This segregation, porosity, shrinkage and other defects in the ingot solidification can not be completely avoided, and the tonnage of steel ingot is greater, the larger the size of the ingot, the more serious defects. These defects in the ingot making ingot production of the product quality be affected, and severe cases can cause product obsolescence. Therefore, in the production of ingots to take measures to minimize segregation, porosity, shrinkage and other defects appear in the central region. For large ingots, remelting of the self-melting mold is one of the effective way to improve the quality of its central areaWorld Steel Pipe . According to reports, has produced 340t from the melting mold electroslag diameter 3556mm THE Ingot world pie network information .