球墨铸铁缩孔缩松的铁液冶金因素影响探析  

Influence of Molten iron Metallurgy Factors on Shrinkage Cavity and Porosity of Ductile Iron

作　　者：白佳鑫 高世爽 刘武成 白新社 BAI Jiaxin;GAO Shishuang;LIU Wucheng;BAI Xinshe(Hebei Longfengshan Casting Industry Co.,Ltd.,Wu'an 056300,Hebei China;Henan Guangrui Automotive Parts Co.,Ltd.,Xinxiang 453600,Henan China)

机构地区：[1]河北龙凤山铸业有限公司,河北武安056300 [2]河南广瑞汽车配件股份有限公司,河南新乡453600

出　　处：《铸造工程》2021年第2期5-10,共6页Foundry Engineering

摘　　要：梳理了国内外关于冶金因素对球铁缩孔缩松影响的认知,并列述了一些具有共识的看法和一些具有争议的观点。对球铁碳当量的选择、过冷度的控制,炉料选择等给出了自己的看法,同时阐明了需加强通过提高冶金质量及浇注过程中气体排放等措施来改善球铁的缩孔缩松倾向。In this paper,the cognition about the influence of metallurgical factors on shrinkage and porosity of ductile iron at home and abroad is summarized,and some common views and some controversial views are described.The authors give their own views on the selection of carbon equivalent,the control of undercooling degree and the selection of furnace charge.At the same time,it is explained that the shrinkage and porosity tendency of nodular iron should be improved by improving metallurgical quality and gas emission during pouring.

关 键 词：球墨铸铁 缩孔缩松 冶金因素 碳当量 过冷度 

分 类 号：TG143.5[一般工业技术—材料科学与工程]