改善天然湿型砂混砂过程中结团现象的研究  

Study on the Agglomeration in the Process of Natural Green Sand Mixing

作　　者：高远[1] 朱世根[1] 骆岚[1] 桑小龙[1] 

机构地区：[1]东华大学机械工程学院纺织装备教育部工程研究中心,上海201620

出　　处：《铸造》2012年第7期783-785,789,共4页Foundry

基　　金：浙江省重大科技专项资助项目(2008c01010-2)

摘　　要：通过加入YZ-1型润滑剂和改变加水顺序等措施,可以有效改善湿型砂混砂过程中的结团现象。当YZ-1型润滑剂加入量比较少时,可以在一定程度上提高湿型砂的抗压强度;当YZ-1型润滑剂含量继续增加时,湿型砂抗压强度又会逐渐降低直至无法造型。采用原砂先加水后加粘土的工艺比传统的原砂先加土后加水的工艺,型砂的强度更高、结团度更低。对加过YZ-1型润滑剂的湿型砂再重新混制反复多次,抗压强度提高,结团度基本不变。The agglomeration occurring in the green sand mixing was effectively reduced by adding an additive YZ-1 and changing the watering sequence. The results indicate that the compression strength of green sand increased with the increasing of addition YZ-1 lubricant when the addition amount is less critical value; with the increase of YZ-1 lubricant, the compression strength reaches a peak value, then the compression strength decreases till cannot satisfy requirement of mold making. By adding YZ-I lubricant and changing the watering sequence, the cluster phenomenon can be solved better.

关 键 词：混砂工艺 湿型砂 结团 润滑剂 加水顺序 

分 类 号：TG221[金属学及工艺—铸造]