Investment Casting Process of Titanium Alloy Based on SLA Technology
Author of the article:宁二宾 李曼 杨佳静 蔡银枝
Author's Workplace：Luoyang Pengqi Industry Co., Ltd., Luoyang 471023, China
Key Words：SLA light-curing titanium alloy investment casting
Abstract：
By adopting the method of SLA light curing molding technology and titanium alloy investment mold precision casting, the technological research was carried out from three aspects, such as SLA light curing investment mold structure design, shell making process, pouring process and thermal isostatic pressure. The results show that the prototype design of SLA light-curing hollow cavity and the direct high-temperature roasting technology of shell are reasonable and feasible, and the technical problems of shell cracking are solved effectively. Centrifugal vacuum casting and thermal isostatic pressure process can ensure the filling and internal quality of complex castings. The surface roughness of the castings could up to6.3 micron, and the size accuracy is up to CT6. The comprehensive performance meets the requirements of national military standards.
