废钢预热过程中的氧化脱碳特性及其对熔化行为的影响  

Oxidation and decarburization characteristics of scrap during preheating and its effect on melting behavior

作　　者：陈爽 汪宙 武聪聪 刘海涛 李继文[1,2] 晁霞 CHEN Shuang;WANG Zhou;WU Cong-cong;LIU Hai-tao;LI Ji-wen;CHAO Xia(School of Materials Science and Engineering,Henan University of Science and Technology,Luoyang 471023,China;Provincial and Ministerial Co-construction of Collaborative Innovation Center for Non-ferrous Metal New Materials and Advanced Processing Technology,Luoyang 471023,China;Henan Jiyuan Iron and Steel(Group)Co Ltd,Jiyuan 454650,China)

机构地区：[1]河南科技大学材料科学与工程学院,河南洛阳471023 [2]有色金属新材料与先进加工技术省部共建协同创新中心,河南洛阳471023 [3]河南济源钢铁(集团)有限公司,河南济源454650

出　　处：《材料热处理学报》2022年第8期117-124,共8页Transactions of Materials and Heat Treatment

基　　金：国家自然科学基金青年科学基金(51904090);河南省科技攻关项目(222102230033)。

摘　　要：废钢预热过程中表面会发生氧化脱碳现象,影响废钢在铁液中的熔化。选取20钢和T10A钢为研究对象,探究加热参数对废钢预热过程中氧化脱碳行为的影响规律。结果表明:20钢和T10A钢的氧化增重均随加热温度的升高和保温时间的增加而增加;通过氧化动力学分析得到20钢和T10A钢的氧化激活能分别为195.38 kJ/mol和181.25 kJ/mol;T10A钢的脱碳层厚度随加热温度的升高和保温时间的增加而增加。废钢预热过程中表面脱碳层的形成可为熔池内废钢快速熔化创造有利条件。Oxidation and decarburization will occur on the surface of scrap during preheating,which will affect the melting of scrap in molten iron.20 steel and T10 A steel were selected as the research objects to explore the influence of heating parameters on the oxidation and decarburization behavior of scrap during preheating.The results show that the oxidation mass gain of the 20 steel and T10 A steel increases with the increase of heating temperature and holding time.According to the oxidation kinetics analysis,the oxidation activation energies of the 20 steel and T10 A steel are 195.38 kJ/mol and 181.25 kJ/mol,respectively.The decarburization layer thickness of the T10 A steel increases with the increase of heating temperature and holding time.The formation of decarburization layer on the surface of scrap during preheating can provide favorable conditions for the rapid melting of scrap in the molten pool.

关 键 词：废钢熔化 预热温度 保温时间 氧化 脱碳 

分 类 号：TG142.3[一般工业技术—材料科学与工程]