钢中MnS夹杂物对钢质量影响及控制研究进展  

Research progress on influence and control of MnS inclusions on steel quality

作　　者：杨泽宇 王敏 李怡宏[3] YANG Zeyu;WANG Min;LI Yihong(State Key Laboratory of Advanced Metallurgy,University of Science and Technology Beijing,Beijing 100083,China;Technical Support Center for Prevention and Control of Disastrous Accidents in Metal Smelting,University of Science and Technology Beijing,Beijing 100083,China;School of Materials Science and Engineering,Taiyuan University of Science and Technology,Taiyuan 030024,Shanxi,China)

机构地区：[1]北京科技大学钢铁冶金新技术国家重点实验室,北京100083 [2]北京科技大学金属冶炼重大事故防控技术支撑基地,北京100083 [3]太原科技大学材料科学与工程学院,山西太原030024

出　　处：《钢铁研究学报》2024年第6期681-691,共11页Journal of Iron and Steel Research

基　　金：中央引导地方科技发展资金资助项目(YDZJSX2022C028)。

摘　　要：钢中细小的MnS夹杂物可以显著改善钢的切削性能,但是MnS夹杂物具有良好的变形性能,轧制后易沿轧制方向延展成为长宽比大的长条状夹杂物,也会恶化钢材的力学性能,同时大尺寸的MnS也容易成为腐蚀的裂纹源。控制钢中形成小尺寸弥散分布的球形或纺锤形MnS夹杂物是改善钢易切削性能、保障钢的力学性能的关键。钢中MnS夹杂物的控制是一个系统工程,涉及冶金工艺全过程,系统综述了钢中MnS夹杂物的形成机制、影响因素及控制措施,可指导高品质钢中MnS夹杂物的控制,为实际生产过程中合理的工艺路径选择和工艺措施调控提供基础。Fine MnS inclusions in steel can significantly improve the cutting performance of steel,but MnS inclusions have good deformation properties and are easy to extend along the rolling direction into long strip inclusions with large aspect ratio,which will also deteriorate the mechanical properties of steel and large size MnS is also easy to become a crack source of corrosion.Controlling the formation of small,dispersed spherical or spindle MnS inclusions in steel is key to improving its machinability and guaranteeing its mechanical properties.The control of MnS inclusions in steel is a systematic project,involving the whole process of metallurgical process.The formation mechanism,influencing factors,and control measures of MnS inclusions in steel are systematically reviewed,which guides the control of MnS inclusions in high-quality steel,and provides the basis for reasonable process path selection and process measure regulation in the actual production process.

关 键 词：硫化锰 纺锤状 形成机制 影响因素 控制措施 

分 类 号：TF777[冶金工程—钢铁冶金]