3D打印熔模精密铸造模样燃烧特性对比研究  

Comparative Study on Combustion Characteristics of 3D Printed Patterns for Investment Casting

作　　者：乔海滨 袁兵兵 孙宏喆 杨光 刘茵琪 QIAO Haibin;YUAN Bingbing;SUN Hongzhe;YANG Guang;LIU Yinqi(Luoyang Sunrui Titanium Precision Casting Co.,Ltd.,Luoyang 471000,China;Luoyang Ship Material Research Institute,Luoyang 471023,China)

机构地区：[1]洛阳双瑞精铸钛业有限公司,河南洛阳471000 [2]中国船舶集团公司第七二五研究所,河南洛阳471023

出　　处：《铸造技术》2020年第6期544-547,共4页Foundry Technology

基　　金：郑洛新自创区产业集群专项(181200212500)资助。

摘　　要：对3种3D打印模样的燃烧特性进行了对比研究,从灰分残留、燃烧物形态及快速燃烧温度区间3个方面探究了SLA模制作的钛合金铸件表面掉渣缺陷多的原因。结果表明,SLA模的灰分残留多于PS粉模和PMMA粉模;SLA模燃烧后始终以固体残屑形式存在,进而导致灰分残留加剧,而PS粉模和PMMA粉模可以熔化流失,因而灰分残留较少;同时SLA模快速燃烧温度区间较宽,因而不易快速燃烧,使模壳胀裂破损风险加大。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.

关 键 词：3D打印 灰分 燃烧物 快速燃烧 

分 类 号：TG249[金属学及工艺—铸造]