INTRODUCTION TO PATENTS  

出　　处：《China Foundry》2014年第2期139-140,共2页中国铸造（英文版）

摘　　要：Foundry mixes containing sulfate and/or nitrate salts and their uses Sand additives have been used with silica sand to reduce the veining tendency. The flux-type sand additives are currently the most widely used additives, but they also have some drawbacks. For instance, iron oxides, when used above about 2% by weight based on the sand （BOS） can cause increased metal penetration and can reduce mold/core strength when used at higher levels.2014-13.Foundry mixes containing sulfate and/or nitrate salts and their uses Patent No.:US2011139310(A1)Date of Patent:2011-06-16Inventors:Showman Ralph E,et al Assignce:ASK Chemicals L P[US]Sand additives have been used with silica sand to reduce the veining tendency.The flux-type sand additives are currently the most widely used additives,but they also have some drawbacks.For instance,iron oxides,when used above about 2%by weight based on the sand(BOS)

关 键 词：石英砂 添加剂 混合使用 金属渗透 硝酸盐 硫酸盐 氧化铁 

分 类 号：S816.7[农业科学—饲料科学] TU991.24[农业科学—畜牧学]