铸造呋喃树脂砂用固化剂的工艺研究

Study on Technology of Hardener for Furan Resin Sand Casting

研究了浓硫酸液相磺化法工艺,合成出了以二甲苯磺酸及硫酸酯为主要有效成分的铸造用呋喃树脂用固化剂,并分析了影响呋喃树脂砂固化的因素。该工艺方法合成的固化剂具有可使用时间长、固化速度快、型砂强度高、硫含量低等特点。固化剂已形成批量化生产,稳定应用于铸造生产中。

The sulfonation process of concentrated sulfuric acid was studied. The hardener for furan resin casting was prepared by using xylene sulfonic acid and sulfuric acid ester as the main effective components. The factors affecting the curing of furan resin sand were analyzed. The hardener has the advantages of long working time, fast curing speed, high strength of molding sand and low sulfur content. The hardener has formed a mass production, stable application in casting production.