型砂中的Na_2CO_3对铝液流动性的影响  

Effect of Na_2CO_3 in Molding Sand on the Fluidity of Liquid Aluminum

作　　者：刘旭麟[1] 刘顺华[1] 

机构地区：[1]大连理工大学材料工程系,辽宁大连116023

出　　处：《机械工程材料》2001年第5期36-38,共3页Materials For Mechanical Engineering

摘　　要：研究了湿砂型条件下Na2 CO3对铝液流动性的影响并分析了其影响机理。结果表明 :随砂型中Na2 CO3含量的提高 ,型砂碱度增大 ,铝液流动性变差 ,是由型砂 铝液界面张力变大而造成的。Effect of Na 2CO 3 on the fluidity of liquid aluminum for green sand casting was invesitgated, and the mechanism was analyzed. It is concluded that basicity of molding sand increases and fluidity of liquid aluminum decreases with the rising of Na 2CO 3 content in sand mold, and increase of interface tension of molding sand liquid aluminum causes fluidity of liquid aluminum to decrease.

关 键 词：铝液 NA2CO3 碳酸钠 流动性 界面张力 型砂 铸造 

分 类 号：TG292[金属学及工艺—铸造] TG231.2