摘要
酯硬化水玻璃和碱酚醛树脂都是现在铸造厂最常用的型砂硬化工艺,但两者各有优缺点。为了结合两者的优点,达到性价比最大化,采用型砂强度对比试验,对酯硬化改性水玻璃硅砂与碱酚醛树脂铬矿砂混合新工艺进行了研究。结果表明:该工艺在中小型砂芯的制作中强度良好,而对于大于2 m的大型砂芯,在潮湿环境下,混合砂交界处易开裂、掉砂。
Ester modified sodium silicate and alkaline phenolic resins are the most commonly used hardening process of foundry, but each has advantages and disadvantages.In order to combine both of the advantages, to maximize performance,we studied the mixing process with the silicon ester hardened sodium silicate sand and alkaline phenolic resin chromite sand mixing process applying sand strength contrast test.The results show that small and medium-sized core produced with this process has high strength, while the large sand core above 2 m can crack and leak sands in the mixed sand junction under wet environment.
出处
《铸造设备与工艺》
2013年第4期34-36,共3页
Foundry Equipment & Technology
关键词
酯硬化改性水玻璃砂
碱酚醛树脂
潮湿环境
强度
ester modified sodium, alkaline phenolic resin, wet environment, strength