模铸注流氩气保护技术的工艺研究  

Process research of argon protection effects for ingot casting

作　　者：周同军[1] 罗辉[1] 

机构地区：[1]宝钢特钢有限公司,上海200940

出　　处：《宝钢技术》2014年第5期43-48,共6页Baosteel Technology

摘　　要：随着产品质量与性能的不断提升,模铸钢材质量控制也更为苛刻,其中浇铸环节是模铸工艺中的关键,而氩气保护是确保浇铸质量的前提。只有合格的氩气保护浇铸才能保证浇铸质量,进而才能不断地提升产品质量。主要介绍氩气保护浇铸用保护罩的发展情况以及40 t产线模铸浇铸过程中采用全封闭式氩气保护浇铸的生产工艺,研究影响保护罩内氧含量的相关因素,并通过在线测氧装置的氧含量监测结果,确定模铸氩气保护浇铸效果的最优条件,以便指导现场操作,减少钢液的二次氧化,提升钢锭质量。With the continuous improvement of product quality and function,the mold steel quality control is becoming more and more strict,in which ingot casting is the key,and argon protection is the premise of ensuring casting quality.Only qualified argon protection can ensure casting process quality,and then improve product quality constantly.By the way of introducing the development of argon protection in ingot casting and the production process of enclosed argon protection in the 40-tons line,to discuss the related factors that are affecting oxygen flow in the argon protection cover.With the oxygen content detected by on-line oxygen monitor,ensure the optimized way and condition of improving the argon protection effects,in order to guide the operation,prevent the liquid steel from secondary oxidation,and improve the ingots quality.

关 键 词：氩气保护浇铸 氧含量 在线测氧 

分 类 号：TG244[金属学及工艺—铸造]