Comparative Study on Combustion Characteristics of 3D Printed Patterns for Investment Casting
Author of the article:QIAO Haibin;YUAN Bingbing;SUN Hongzhe;YANG Guang;LIU Yinqi
Author's Workplace：Luoyang Sunrui Titanium Precision Casting Co.,Ltd.,Luoyang 471000,China;Luoyang Ship Material Research Institute,Luoyang 471023,China
Key Words：3D printing ash residue combustor morphology the rapid combustion
Abstract：The combustion characteristics of three kinds of 3D-printed patterns were compared,and the reasons for more slag dropping defects on the surface of titanium alloy castings made by SLA model were explored from three aspects of ash residue,combustor morphology and fast combustion temperature range.The results show that the ash residue of SLA mold is more than that of PS and PMMA powder pattern.After SLA mold combustion,it always exists in the form of solid debris,which leads to the aggravation of ash residue,while PS and PMMA powder pattern can melt and lose,so ash residue is less.At the same time,SLA mold rapid combustion temperature range is relatively wide,so it is not easy to burn quickly,which increases the risk of mold shell bursting and cracking.
