铸造2024，Vol.73Issue(7)：915-922,8.
结构对SLS砂型次级烧结区的影响及其控制工艺研究
Influence of Structure on the Secondary Sintering Zone of SLS Sand Mold and Its Control Process
摘要
Abstract
In this paper,a precision test piece containing many common structures is designed to explore the influence of structure on the forming accuracy of sand mold printed by SLS.Through printing and dimensional measurement,it is found that the secondary sintering of longitudinal elliptical structure and circular hole is more serious than that of other structures,and there are directional differences.Compared with the conventional scanning method,the low-density multi-pass scanning method improves the accuracy level of national standard drum parts from more than 6 to 5 at the total energy density of 0.1 J·mm·s-2,and the dimensional deviation of the rib plate is reduced to 0.072 mm.关键词
激光3D打印/结构/成形精度/铸造砂型/次级烧结Key words
laser 3D printing/structure/forming accuracy/casting sand mold/secondary sintering分类
矿业与冶金引用本文复制引用
惠旭,李广宇,刘文文,付宏源,姚山..结构对SLS砂型次级烧结区的影响及其控制工艺研究[J].铸造,2024,73(7):915-922,8.基金项目
国家自然科学基金资助(52205359) （52205359）
中央高校基本科研业务费专项资金资助(DUT23RC(3)039). （DUT23RC(3）
