HOT TOP Russian patent published in 1994 - IPC

FIELD: casting of ingots and hot tops therefor. SUBSTANCE: two opposite walls of hot top are provided with projections while inserts adjoining said walls have recesses. Two other opposite walls of hot top have recesses while inserts adjoining them have projections entering the recesses on hot top walls. When heat-insulating inserts have projections alone, all internal walls of hot top have recesses. The projection is molded into insert body and its projecting end (or ends) in the form of metal spring strip (or strips) are molded in flush with the insert surface. EFFECT: improved design. 2 cl, 6 dwg