CO-CO2气氛条件下铁碳合金薄带脱碳试验研究  

Experimental Study on Decarburization of Iron-carbon Alloy Sheet under CO-CO Atmosphere

作　　者：周美洁 艾立群 洪陆阔 侯耀斌 周朝刚 Zhou Meijie;Ai Liqun;Hong Lukuo;Hou Yaobin;Zhou Chaogang(College of Metallurgy and Energy,North China University of Science and Technology,Tangshan063210,Hebei,China)

机构地区：[1]华北理工大学冶金与能源学院,河北唐山063210

出　　处：《钢铁钒钛》2020年第6期94-98,共5页Iron Steel Vanadium Titanium

基　　金：河北省自然科学基金资助项目(E2018209284);河北省自然科学基金(E2019209160);国家自然科学基金资助项目(51374090)。

摘　　要：为了研究CO-CO2气氛条件下温度、时间和薄带的厚度等参数对Fe-C合金薄带脱碳的影响,试验以初始碳含量4.2%左右的2、1.5 mm和1 mm厚的Fe-C合金薄带为研究对象,在Ar-CO-CO2弱氧化气氛条件下进行气—固反应脱碳。结果表明:随着脱碳温度的升高脱碳量增加,升高温度有利于提高脱碳速率;随着脱碳时间的增加脱碳量增加,脱碳前期脱碳速率较快,在1 413 K下1 mm厚度薄带脱碳60 min脱碳率可达到92%;薄带厚度对脱碳效果影响显著,相同时间内1 mm的薄带脱碳效果要明显优于1.5 mm和2 mm薄带;随着脱碳时间的延长铁素体区域厚度增加,靠近反应界面的碳质量分数越来越低。In order to study the effect of temperature,holding time and thickness of steel sheet on decarburization of Fe-C alloy sheet in CO-CO2 atmosphere,the experiments were carried out in a weak oxidation atmosphere of Ar-CO-CO2 on 2 mm,1.5 mm and 1 mm thick Fe-C alloy sheet with initial carbon content of 4.2%. As decarburization temperature increases,both decarbonization amount and decarburization rate increase. When decarburization time extends,the decarburization amount increases. Decarburization rate is faster in the early stage of decarburization.The decarbonization rate of thin sheet with 1 mm thickness can reach 92% at 1 413 K for 60 min.The thickness of strip had a significant effect on decarburization.Given the same holding time,The decarburization effect of 1 mm strip is better than those of 1.5 mm strip and 2 mm sheet. As the decarburization time prolongs,the thickness of ferrite region increases,and the mass fraction of carbon near the reaction interface decreases.

关 键 词：固态炼钢 铁碳合金 薄带 脱碳 Ar-CO-CO2气氛 气固反应 

分 类 号：TF777[冶金工程—钢铁冶金] TF704.5