Abstract :
Replacing steam tables, low temperature ovens, and hot plates, banks of 250-watt infrared lamps (248 in all) are used to dry the molds and melt out 98 per cent of the wax pattern at the precision “lost-wax” casting foundry of the Westinghouse Electric Corporation. The balance of the wax is burned in the preheat furnace where molds are heated to 1,000 degrees centigrade for casting. The new process is said to reduce mold cracking.
