Study on the Influencing Factors of 3D Printing Sand Mold Performance
Author of the article:HONG Haichun;SHAO Chunyan;XU Jifu;LI Bin;JING Wenxia;WANG Kaiqiang
Author's Workplace：Beijing National Innovation Institute of Lightweight Co.,Ltd.,Beiing 100083,China
Key Words：3D printing furan resin properties of printed sand molds reuse of old sand print density
Abstract：Based on the working principle of 3D printing,the effects of furan resin on the properties of printed sand molds were studied under the conditions of constant printing layer thickness and sand laying speed,and the effects of old sand reuse on the properties of printed sand molds were summarized. The results show that when the addition of furan resin is less than 3%,the tensile strength of sand mould increases obviously,and the gas production increases slowly. When the resin content is more than 3%,the tensile strength of sand mold increases slowly,and the gas generation capacity increases obviously. When the curing agent is 15% resin content,the tensile strength of sand mold is the highest. When the used sand is added less than 40%,the tensile strength of the sand mould is greater than 1. 3 MPa,and the printing density is slightly reduced.
