INGOT PRODUCTION METHOD Russian patent published in 1999 - IPC

FIELD: foundry. SUBSTANCE: at solidification ingot is subjected to acoustic action by means of inner macrocooler in the form of resonator. The last has oscillation frequency equal to natural frequency of ingot. Acoustic waves amplified by resonator act upon crystallized ingot as mechanical vibration. Crystalline structure of ingot is reduced and compressed. EFFECT: simplification of method due to absence of outer power source, less loss of yield. 5 dwg, 3 tbl, 2 ex