EASY-TO-REMOVE HOT TOP OF GATING SYSTEM AND METHOD FOR REMOVING IT Russian patent published in 2002 - IPC

FIELD: foundry. SUBSTANCE: monolythic dividing plate is placed vertically in hot top. Said plate is made of wood material and it has pointed ribs. It is possible to place several plates or cross-like plate. At pouring metal to mold said plate divides hot top by portions and it burns out. In order to remove hot top, percussion load is applied to its upper part at side of flat dividing surface of plate. It simplifies removal of hot top. Additional heat separated at plate burning out provides condition for making up casting by heat. EFFECT: enhanced quality of castings, lowered labor consumption, simplified design of gating system. 3 cl, 10 dwg, 1 ex