Casting Process Design of Heavy Gas Turbine Combustion Chamber Housing Casting

Author of the article:DAI Yueliang

Author's Workplace：Shanghai Electric SHMP Casting & Forging Co., Ltd., Shanghai 200245, China

Key Words： heavy gas turbine; combustion chamber housing; casting process; casting simulation

Abstract： According to the characteristics of the heavy gas turbine combustion chamber housing such as including large
overall size, thin wall section, high dimension accuracy demand, difficulty in feeding and strict restriction for flaws detected
by nondestructive inspection, the measures including using different shrinkage rules for different direction of the casting,
reinforcement bar to prevent distortion, middle risers to feed two hot spots, and adding pads for helping to feed and chills
are adopted. The casting process was simulated and optimized by Procast software. Finally qualified combustion chamber
housings are successfully produced.