近终形异型连铸坯中大型夹杂物行为研究  

STUDY OF MACRO-INCLUSION BEHAVIOR OF NEAR EVENTUALLY BEAM BLANKS

作　　者：张耀平[1] 丁志军[2] 张树江[2] 

机构地区：[1]河北钢铁集团矿业公司 [2]河北理工大学冶金与能源学院

出　　处：《河南冶金》2009年第2期9-10,18,共3页Henan Metallurgy

摘　　要：研究了采用半敞开方式浇铸的H型钢中大型夹杂物类型、数量、以及尺寸的情况,并通过示踪剂追踪分析了钢中夹杂物的来源。结果表明:铸坯中大型夹杂物主要有六类复合夹杂物,分别为SiO2-CaO-MnS-Al2O3类,SiO2-CaO-Al2O3类,CaO-CaS类,SiO2-CaO-MnO-MgO-Al2O3类,SiO2类,SiO2-Al2O3类等。在稳态浇注条件下,铸坯中大型夹杂物质量含量为78.75mg/10kg,非稳态浇铸下的铸坯内大型夹杂物的平均含量为130.09mg/10kg,铸坯中非金属夹杂物含量较高。The paper researched the magnitude, distribution and characteristic of Non - metallic Inclusions in beam blanks via systemic sampling and adopting metallographic analysis and SEM/EDS, and analyzed the origin of inclusions in beam blanks through method of tracer. Result of the research shows ： the macro inclusion is main to have six types of compound admixture ,respectively is the type of SiO2 - CaO - MnS - Al2O3 ,the type of SiO2 - CaO - Al2O3 ,the type of CaO - CaS, the type of SiO2 - CaO - MnO - MgO - Al2O3, the type of SiO2, the type of SiO2 - Al2O3 etc. Under the condition of the steady state cast, the quality content of macro inclusion is 78.75mg/10kg. Under the condition of non -steady state cast,the average content of macro -inclusion is 130.09 mg/10kg,the content of non -mental admixture in beam blanks is higher.

关 键 词：H型钢 大型夹杂物 示踪法 非稳态 

分 类 号：TF777[冶金工程—钢铁冶金] TG142.41[一般工业技术—材料科学与工程]