Effects of binder components and PVA modifier on bonding performance of phosphate binder for sand core-making

作     者：Wei-hua Liu Xin Jia Lai Song Ying-min Li Wei-hua Liu;Xin Jia;Lai Song;Ying-min Li

作者机构：School of Materials Science and EngineeringShenyang University of TechnologyShenyang 110870China 

出 版 物：《China Foundry》 (中国铸造（英文版）)

年 卷 期：2023年第20卷第2期

页      面：134-138页

核心收录：

学科分类：080503[工学-材料加工工程] 0806[工学-冶金工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0802[工学-机械工程] 0702[理学-物理学] 080201[工学-机械制造及其自动化] 

主　　题：phosphate binder heat curing modifier tensile strength 

摘      要：A type of heat-curing phosphate binder was proposed,and orthogonal experiments based on the tensile strength of sand samples determined that the optimal composition of the binder was phosphoric acid:water:aluminum hydroxide:magnesium oxide:boric acid=300:70:60:9:*** 10%polyvinyl alcohol(PVA)solution during the sand mixture process can significantly improve the 24 h tensile strength of sand *** adding 30 g phosphate binder and 8 g 10%PVA solution,the initial tensile strength of the sample is 0.76 MPa,the room temperature tensile strength is 2.29 MPa,and the 24 h tensile strength is 1.73 *** heat-curing modified phosphate sand mold has high tensile strength and low gas generation,which can meet general casting production requirements.