Study on Sand Mold Casting Process of Titanium Alloy

Author of the article:WANGTaoliang, LI Wanyin, YANG Ying, LI Man, ZHAO Yali

Author's Workplace：Luoyang Pengqi Industrial Co., Ltd., Luoyang 471000, China

Key Words：titanium alloy; sand casting; quality; the casting cost

Abstract：With mullite as the main molding materials and inert materials as the surface layer to prepare composite sand mold, titanium alloy shell casting was successfully produced by melting and pouring in vacuum shell furnace. The results show that there is no chemical sand, no cracks and no cold separation defects on the surface of the casting. X-ray examination show no cracks or slag inclusion in the casting. The chemical composition and mechanical properties of the casting are up to the standard. Compared with the graphite mold casting process, the surface and internal quality of the casting are obviously improved, and the casting cost is reduced by nearly 50%.