变质处理改善钨渣低铬耐磨铸铁的组织和性能  

Improving the Structure and Properties of Low Chromium Wearresistant Cast Iron with Tungsten Slag by Modification

作　　者：胡城立 雷泽英[1] 

机构地区：[1]湖南大学机械工程系

出　　处：《湖南大学学报（自然科学版）》1995年第2期104-108,128,共6页Journal of Hunan University:Natural Sciences

摘　　要：研究了变质处理对钨渣低（＜２％）耐磨铸铁显微组织、力学性能及抗磨性的影响。结果表明，用含Ｖ，Ｘｔ和Ｂ的变质剂处理钨渣低铬耐磨铸铁，可使其组织中的碳化物由连续网状、粗大的板块状，转变为弧立的、细小的块状，冲击韧性提高１２０％，抗磨性提高４０％左右。In this paper, the effeefs of modification on the microstructure,mechanical properties and abrasion resistance of low chromium wearresistant cast iron meltedwith tungsten slag are investigated. The results obtained show that the morphology ofcarbides in the law chromium wearresistant cast iron melted with tungsten slag, treatedwith inoculants containing V, Xt and B, Changes from continuous network to isolated,fine irregular blocks and at the same time,the impact toughness. increases by 120% andabrasion resistance raises by 40%.

关 键 词：耐磨铸铁 孕育剂 力学性质 孕育处理 铸造 

分 类 号：TG223[金属学及工艺—铸造]