Research on Casting Process of ZL205A High Strength Aluminum Alloy Thin-walled Casting

Author of the article:CHEN Fusheng, QIN Xiuli, CHEN Ming

Author's Workplace：Xinxiang Aviation Forging and Casting Co., Ltd., Xinxiang 453049, China

Key Words：ZL205A alloy; thin-walled castings; casting process

Abstract：The casting of an aero shell was ZL205A aluminum alloy with uneven wall thickness, the minimum wall thickness was 2.2 mm. According to its structural characteristics and alloy properties, the sand casting process was determined, a reasonable open gating system was designed, and the process parameters of molding, core making, smelting, pouring and heat treatment were optimized. The results show that the riser and cold iron are placed in the thick part. The core was baked at 300 ±10 ℃ for 2 h. Using hexachloroethane (C2Cl6) and argon composite refining; The pouring temperature is controlled at 735±5 ℃; The high quality casting of thin wall ZL205A high strength aluminum alloy can be obtained when the heat treatment is performed by the way of section heating.