Mold for continuous casting of strands

Abstract

A mold for continuous casting of strands and including a pouring spout, and a housing surrounding the pouring spout and spaced from the pouring spout, forming with the pouring spout a gap that provides for flow of cooling medium therethrough, with the gap having a small width in an upper mold region and a relatively large width in a lower mold region.

What is claimed is:  
     
         1 . A mold for continuous casting of strands, comprising a pouring spout; and a housing surrounding the pouring spout at a distance therefrom, forming with the pouring spout a gap that provides for flow of cooling medium therethrough, the gap having a small width in an upper mold region and corresponding to a high cooling medium velocity, and a relatively large width in a lower mold region and corresponding to a relatively low velocity of the cooling medium.  
     
     
         2 . A mold as set forth in  claim 1 , wherein at least a vertical profile of an inner wall of the mold housing, which defines an outer wall of the gap, has a shape corresponding to a reverse shape of a solidification line in a cast strand running from above downward.  
     
     
         3 . A mold as set forth in  claim 1 , wherein the gap for cooling medium is increased in corner regions thereof.  
     
     
         4 . A mold as set forth in  claim 1 , wherein the gap has a different width along at least one of wide side of the mold and longitudinal side of the mold, with a narrowest width being provided in a middle of the at least one of wide side and longitudinal side.  
     
     
         5 . A mold as set forth in  claim 2 , wherein the pouring spout is formed as a cylindrical member.  
     
     
         6 . A mold as set forth in  claim 3 , wherein the corner regions have, in a horizontal plane, an oval-shaped, bulging profile.