Casting flask with improved heat transfer characteristics

Abstract

A resurfacing for a worn interior wall of a cope or drag of a metal foundry flask includes a layer of thermal conducting substance between the outer surface of the liner plate and the inner wall surface of the flask.

Having fully described an operative embodiment of this invention, what is claimed is:  
     
         1 . A casting flask comprising a plurality of outer walls each having an interior wall surface and an exterior wall surface, said flask further comprising: 
 a liner plate mounted to said interior wall surface of at least one of said outer walls, said liner plate having an outer surface disposed adjacent said interior wall surface and an inner surface disposed opposite said outer surface; and    a layer of a thermal conducting substance disposed between said outer surface of said liner plate and said inner wall surface.    
     
     
         2 . The casting flask in accordance with  claim 1 , wherein said thermal conducting substance is a substance known by the trade name of “TRACIT.” 
     
     
         3 . A method of relining an outer wall of a casting flask having an interior wall surface, said method comprising the steps of: 
 applying a layer of a thermal conducting substance to said interior wall surface; and    attaching a liner plate to said interior wall surface adjacent said layer of thermal conducting substance, whereby said thermal conducting substance is disposed between said liner plate and said interior wall surface.    
     
     
         4 . The method in accordance with  claim 3 , and further comprising the step of grinding said interior wall surface, to present a relative smooth interior wall surface, prior to said step of applying said layer of thermal conducting substance.