存放时间对酯固化碱性酚醛树脂自硬砂性能的影响  

Effect of Storage Time on Properties of Ester-Cured Alkaline Phenolic Resin Self-Setting Sand

作　　者：武弘杰 王洁英 张聚辉 李永刚 WU Hong-jie;WANG Jie-ying;ZHANG Ju-hui;LI Yong-gang(Weichai Heavy Machinery Co.,Ltd.,Weifang 261108,Shandong,China)

机构地区：[1]潍柴重机股份有限公司,山东潍坊261108

出　　处：《铸造》2023年第3期301-304,共4页Foundry

摘　　要：以铸造生产中常用的酯固化碱性酚醛树脂自硬砂(碱酚醛树脂砂)为研究对象,研究在生产现场存放时间对酯固化碱酚醛树脂砂室温抗拉强度、发气量等性能的影响。结果表明,在生产现场存放29天的过程中,碱酚醛树脂砂试块的室温抗拉强度先上升后下降,发气量未出现明显的上升,最低室温抗拉强度为0.72 MPa,最高发气量为11.1 mL/g,均满足铸件生产要求。Taking ester-cured alkaline phenolic resin self-hardening sand(alkali phenolic resin sand)commonly used in foundry production as the research object,the effect of storage time on the room temperature tensile strength and gas evolution of the alkali phenolic resin sand was studied when stored at the production site.The results showed that during the 29-day storage at the production site,the room temperature tensile strength of the alkali phenolic resin sand test block first increased and then decreased,and the gas emission did not increase significantly.The minimum room temperature tensile strength was 0.72 MPa,and the maximum gas generation volume was 11.1 mL/g,both of which met the requirements of the casting production.

关 键 词：酯固化碱性酚醛树脂自硬砂 存放时间 抗拉强度 发气量 

分 类 号：TG242.7[金属学及工艺—铸造]