铸造2023，Vol.72Issue(12)：1597-1601,5.
基于正交设计的热芯盒磷酸盐粘结剂砂改性研究
Modification Research on Hot Box Phosphate Bonded-Sand Based on Orthogonal Design
骆志鹏 1夏露 1张友寿 1谭青焕1
作者信息
- 1. 湖北工业大学材料与化学工程学院,湖北武汉 430068||绿色轻工材料湖北省重点实验室,湖北武汉 430068
- 折叠
摘要
Abstract
The thermal curing phosphate binder sand was modified by orthogonal test.The results showed that 6 g and 12 g of TEMED and mannitol were better for each binder,the addition amount of both cationic polyacrylamide aqueous solution and oxalic acid aqueous solution was 0.3%of the sand mass,and the concentrations were 0.8%and 12.5%,respectively.Under the conditions of sand shooting pressure of 0.8 MPa,mold temperature of 150℃and heating time of 3 min,the curing flexural strength of the sand sample prepared by the optimized scheme can reach 4.2 MPa,and the flexural strength decreases by 2.83%after storing for 24 h in 40%-50%humidity environment,And the bending strength of the sample continues to decrease by 22.89%after continuously storing for 24 h in 60%-65%humidity environment.The moisture absorption performance of the composite modified thermal curing phosphate binder sand has been significantly improved.关键词
磷酸盐粘结剂/热固化/正交试验/强度/抗吸湿性Key words
phosphate binder/heat curing/orthogonal experiment/strength/anti-hygroscopicity分类
矿业与冶金引用本文复制引用
骆志鹏,夏露,张友寿,谭青焕..基于正交设计的热芯盒磷酸盐粘结剂砂改性研究[J].铸造,2023,72(12):1597-1601,5.
