磷酸盐粘结剂及其型砂配比优化研究  

Research on Optimization of Phosphate Binder and Its Molding Sand Formulation

作　　者：黄飞 夏露 张友寿 王超 任彦臻 HUANG Fei;XIA Lu;ZHANG You-shou;WANG Chao;REN Yan-zhen(School of Materials and Chemical Engineering,Hubei University of Technology,Wuhan 430068,Hubei,China;Hubei Provincial Key Laboratory of Green Light Industrial Materials,Wuhan 430068,Hubei,China;Jinan Sheng-Quan Group Co.,Ltd.,Jinan 430068,Shandong,China)

机构地区：[1]湖北工业大学材料与化学工程学院,湖北武汉430068 [2]绿色轻工材料湖北省重点实验室,湖北武汉430068 [3]济南圣泉集团股份有限公司,山东济南250200

出　　处：《铸造》2023年第2期178-182,共5页Foundry

摘　　要：采用均匀设计试验方法,以试样存放120 h的抗拉强度加权平均值为指标,研究了磷酸盐粘结剂的中和度、合成时的加水量,以及型砂制备时粘结剂、KH-550、超细电熔镁砂粉、柠檬酸水溶液等的加入量对磷酸盐粘结剂砂试样抗拉强度的影响。结果表明:通过均匀试验及回归分析得到抗拉强度加权平均值与六个因素之间的回归方程。采用中和度为32%的粘结剂,合成时加水量为200 mL,混砂时粘结剂加入量为2.5%,KH-550加入量为7.1%,超细电熔镁砂粉加入量为5%,柠檬酸水溶液加入量为6.5%,所制备的型砂试样存放120 h的抗拉强度加权平均值为0.89 MPa。The uniform design test method was used to study the influence of the neutralization degree of phosphate binder,the amount of water added in the synthesis process,and the amount of binder,KH-550,ultrafine fused magnesia powder,citric acid aqueous solution in the preparation of molding sand on the tensile strength of the phosphate binder sand sample with the weighted average tensile strength of the sample stored for 120 h as the indicator.The results show that:The regression equation between the weighted average of tensile strength and six factors is obtained by uniform test and regression analysis.The binder with a neutralization degree of 32%was used,the amount of water added in the synthesis process was 200 mL,The amount of binder,KH-550,ultra-fine fused magnesia powder and citric acid aqueous solution were 2.5%,7.1%,5%and 6.5%,respectively,in the sand mixing process.The weighted average tensile strength of the prepared molding sand sample stored for 120 h was 0.89 MPa.

关 键 词：磷酸盐粘结剂 型砂配比 抗拉强度 回归分析 

分 类 号：TG232[金属学及工艺—铸造]