超低碳IF钢碳含量生产控制  

Carbon Content Control in the Production of Ultra-low Carbon IF Steel

作　　者：杨丽[1] 宋进英 YANG Li;SONG Jinying(Department of Metallurgical,Tangshan Vocational College of Science and Technology,Tangshan 063001,China;School of Metallurgy and Energy,North China University of Science and Technology,Key Laboratory of the Ministry of Education for Modem Metallurgy Technology,Tangshan 063210,China)

机构地区：[1]唐山科技职业技术学院冶金系,河北唐山063001 [2]华北理工大学冶金与能源学院,华北理工大学教育部现代冶金技术重点实验室,河北唐山063210

出　　处：《铸造技术》2018年第8期1795-1798,共4页Foundry Technology

基　　金：国家自然科学基金(51304060)

摘　　要：根据RH真空深脱碳和中间包冶金机理,结合超低碳IF钢精炼和连铸生产环节碳含量的分析,发现真空泵的部件装备以及真空壁上余钢残留,容易引起RH真空度高、脱碳效果差;合金料中碳粉颗粒混入、耐材辅料碳含量高以及覆盖剂、保护渣卷入钢液,这是造成超低碳IF钢中增碳的主要原因。结果表明,通过及时更换不满足生产要求的部件装备、清除残留余钢、控制混料和调整耐火材料碳含量等一系列措施的实施,铸坯平均碳含量达到0.002 9%,满足超低碳IF钢碳含量要求。According to RH vacuum deep decarburization and the mechanism of tundish metallurgy combination of ultra-low carbon IF steel refining and continuous casting production process the analysis of the carbon content in steel, it was found that the vacuum pump parts and equipment and the residual steel on the vacuum wall, it was easy to cause the high vacuum degree of RH and poor decarburization; The high carbon content of carbon powder in the alloy, the high carbon content of the materials, and the inclusion of the coating agent and the protective slag were the main reasons for the increase of carbon in ultra-low carbon IF steel. The results show that the implementation of a series of measures, such as the replacement of parts and equipment that do not meet the production requirements, the removal of residual steel, the control of mixed materials and the adjustment of the carbon content of refractory materials, the average carbon content of casting billet is 0.0029%, which meets the requirement of ultra-low carbon IF carbon content.

关 键 词：脱碳 真空精炼 超低碳钢 耐火材料 

分 类 号：TF713.4[冶金工程—钢铁冶金]