改善自硬呋喃树脂砂高温退让性的试验研究  

An Experimental Study on Improving the High Temperature Deformability of No-Bake Furan Resin

作　　者：朱文英[1] 陈亚东[1] 

机构地区：[1]苏州市兴业铸造材料有限公司,江苏苏州215151

出　　处：《铸造》2011年第8期794-795,810,共3页Foundry

摘　　要：自硬呋喃树脂砂砂型有较高的常温强度和高温刚性,金属液浇注后,铸型退让性较差,阻碍铸件收缩,产生较大应力,诱使铸件产生裂纹缺陷,尤以铸钢件为甚。为攻克自硬呋喃树脂砂高温退让性这一技术难题,从多技术方案中优选丙酮改性和特殊助剂的技术方案,取得了事半功倍的效果。The no-bake furan resin sand mold has comparatively higher room temperature strength and high temperature rigidity. After pouring liquid metal, the poor deformability of the mold impedes the contraction of castings, and generates relatively higher stress which leading to the crack defects of the castings, especially for steel castings. In order to solve the problem above, the technical scheme of acetone modification with special accessory ingredient was preferentially chosen from many schemes, and twice the results were obtained with half the effort.

关 键 词：呋喃树脂 丙酮 树脂改性 高温退让性 热塑性 热裂 

分 类 号：TG221.1[金属学及工艺—铸造]