防止呋喃树脂砂厚大铸钢件粘砂缺陷的新型涂料和面砂研制_王春涛.pdf

Vol. 23 No. 6 # 340 # FOUNDRY T CHNOLOGY Nov.2002 1 2 王春涛 , 陈立新 ( 1. , 316004 ; 2. , 310027) : 新研制的水基锆英粉涂料包括底涂料和面涂料底涂料具有较好的涂渗性, 涂渗深度达到2.6 mm, 它既有填隙作 , 又可减缓砂型的激热膨胀; 面涂料具有较好的厚涂性, 单次刷涂的干厚度达到 1. 1 mm, 具有较好的抗金属液冲刷和侵蚀特 点新开发的Z- 1 砂是1 种粒形圆整表面光洁的铝硅系耐火材料, 具有热膨胀率小树脂耗量低和能适度烧结的特点生产 试验表明, 配合使 上述Z- 1 砂和新型双层涂料,能有效防止呋喃树脂砂厚大铸钢件的金属渗透 : 呋喃树脂砂; 涂料; Z- 1砂; 铸钢件;粘砂 : TG250. 6 : A : 1000-8365( 2002) 06-0340-03 Development of Advanced Coatings and Surface-sand Preventing Metal Penetration in Large-size Steel Castings by Furan Resin Sand Process 1 2 WANG Chuntao , CH N Lixin ( 1. ngineering College, Zhejiang Ocean University, Zhoushan 316004, China; 2. College of Materials Science and Chemical ngineering, Zhejiang University, Hangzhou 310027, China) Abstract:The developed water-based zircon powder coatings include base-coating and surface-coating. The coating possesses a good permeability of 2. 6 mm with a desirable filling and anti thermo-expansion of sand mold. T he surface-coating has a thick coating character of 1. 1mm with a good ant-i erosion character on liquid metal. The above double coatings combined with newly developed Z-1 sand can effectively prevent metal penetration in large-size steel castings by no-bake furan resin sand process. ey words: Furan resin sand; Coating; Z-1 sand; Steel casting; Metal penetration , 100, 2, 4, 112, 018, 3 0. 5, 40: 1. 96 g/ c