水基涂料涂覆工艺对3D打印砂型表面质量影响的研究  

Study on the effect of water-based coating process on the surface quality of 3D printed sand molds

作　　者：丁业腾 石利彤 姚平坤[1] 姚山 DING Yeteng;SHI Litong;YAO Pingkun;YAO Shan(School of Material Science and Engineering,Dalian University of Technology,Dalian 116023,Liaoning China)

机构地区：[1]大连理工大学材料科学与工程学院,辽宁大连116023

出　　处：《中国铸造装备与技术》2024年第5期7-12,共6页China Foundry Machinery & Technology

摘　　要：以涂料波美度、单次浸涂时间、浸涂次数等工艺参数为影响因素,设计了水基涂料浸涂正交试验,研究了以上因素对3D打印砂型表面粗糙度、涂料层厚度以及涂料层厚度均匀度的影响,得到水基涂料浸涂最佳工艺。采用该工艺,涂层表面粗糙度可以达到Ra3.2~Ra6.3,涂层厚度0.3~0.35 mm,且涂层均匀度好。实际验证铸件表面粗糙度可以达到Ra6.3。Taking the process parameters such as coating poise,single dipping time and number of dipping times as the influencing factors,an orthogonal test of water-based coating dipping was designed to study the effects of the above factors on the surface roughness,coating layer thickness and coating layer thickness uniformity of the 3D printed sand mold,and to obtain the optimal process of water-based coating dipping.With this process,the coating surface roughness can reach Ra3.2~Ra6.3,the coating thickness is 0.3 mm~0.35 mm,and the coating uniformity is good.The surface roughness of castings can reach Ra6.3 by practical verification.

关 键 词：涂覆工艺 3D打印砂型 涂层 砂型表面粗糙度 

分 类 号：TG242[金属学及工艺—铸造]