球化剂品质对活塞座圈铸件缩松的影响  

Effect of Nodulizer Quality on Dispersed Shrinkage of Piston Seat Ring Castings

作　　者：聂富荣 崔国锋 张小青 NIE Fu-rong;CUI Guo-feng;ZHANG Xiao-qing(Nanjing Zhufeng International Trade Co.,Ltd.,Nanjing 210009,Jiangsu,China;Shanxi Guofeng Foundry Technology and Trade Co.,Ltd.,Taiyuan 030006,Shanxi,China;Shanxi Minghui Precision Casting Co.,Ltd.,Jiaocheng 030500,Shanxi,China)

机构地区：[1]南京铸峰国际贸易有限公司,江苏南京210009 [2]山西国丰铸造科贸有限公司,山西太原030006 [3]山西明汇精密铸造有限公司,山西交城030500

出　　处：《铸造》2021年第3期378-381,共4页Foundry

摘　　要：活塞座圈是结构复杂铸件,生产中易产生缩松缺陷。在本试验中,通过降低球化剂MgO含量,提高铁液的纯净度,提升铸件凝固过程中铁液的补缩能力以及石墨化膨胀能力,从而减少或消除活塞座圈铸件缩松的发生。Piston seat ring castings with complex structure are easy to produce shrinkage defects in production.In this wok,by reducing the content of MgO in nodulizer and improving the purity of molten iron,the feeding capacity and graphitization expansion capacity of molten iron in the solidification process of casting were improved.Therefore,the dispersed shrinkage defects of the piston seat ring castings were reduced or eliminated.

关 键 词：缩松 球化剂 氧化镁 石墨化膨胀 

分 类 号：TG143.5[一般工业技术—材料科学与工程]