METHOD OF CENTRIFUGAL CASTING OF HOLLOW PRODUCTS Russian patent published in 1996 - IPC

FIELD: casting production. SUBSTANCE: method involves casting melt into rotating ingot mold, formation of product and alloying it; performing alloying process into two stages after formation of product with treating by diffusing agent inner surface of product at T1 = T - (250-270 C) and V1 = (0.9-0.95)V during 0.0016-0.05 h; performing the last stage at T1 = T - (280-350 C) and V1 = (0.7-0.85)V during 0.05-0.01 h at total duration of alloying period not more than 0.2 h, where T - liquidus temperature of inner layer of product metal; T1 - temperature of inner layer of product metal during alloying procedure; V - ingot mold rotation speed at casting process; V1 - ingot mold rotation speed at alloying process. EFFECT: higher efficiency.