国内外高强度无取向电工钢研究进展.docVIP

高强度无取向电工钢的研究进展 潘振东，项 利，张 晨，仇圣桃，王忠英 （先进钢铁流程及材料国家重点实验室，钢铁研究总院连铸技术国家工程研究中心，北京 100081） 摘 要：针对宝钢集团、日本新日铁住金和JFE公司公开的相关专利，总结了国内外高强度无取向电工钢的研究进展，分析了钢的化学成分、生产工艺及产品性能的特点，指出固溶强化、细晶强化、析出强化、位错强化都有可能被用来提高无取向电工钢的强度，并阐述了四种强化方式的优缺点。最后指出在高强度无取向电工钢的研发过程中，需根据其具体用途确定目标性能，再采用合适的强化手段，最终实现力学性能、磁性能和生产性能之间的平衡。 关键词：高强度；无取向电工钢；强化方式 中图分类号：TG142.7 文献标志码：A Research Progress of High Strength Non-oriented Electrical Steel PAN Zhen-dong, XIANG Li, ZHANG Chen, QIU Sheng-tao, WANG Zhong-ying (State Key Laboratory of Advanced Steel Processing and Products, National Engineering Research Center of Continuous Casting Technology, Central Iron and Steel Research Institute, Beijing 100081, China) Abstract: The research progress of high strength non-oriented electrical steel at home and abroad is summarized according to related patents brought into the public by Baosteel, Nippon Steel Sumitomo Metal Corporation and JFE. The characteristics of the chemical composition, production technology and properties of products in the patents are analyzed. Any ones of solution strengthening method, fine-grain strengthening method, precipitation strengthening method or dislocations strengthening method may be used to improve the strength of non-oriented electrical steel. The advantages and disadvantages of the four strengthening methods are stated in this paper. In the researching process, people should firstly make sure the target properties of the high strength non-oriented electrical steel according to its specific uses, and then determine to use the right strengthening method to achieve the balance of mechanical properties, magnetic properties and production performance. Key words: high strength; non-oriented electrical steel; strengthening method 0引 言 随着航空航天、飞轮蓄能、电动工具、离心压缩机、微汽轮发电机等行业的发展[1-2]，转子转速可高达每分种数万转甚至十几万转的高速电机应用越来越多，此时常规的转子铁芯难以承受其高速旋转产生的离心力，这对无取向电工钢的强度提出了更高的要求[3]。另外，随着电子控制系统的发展，内置式永磁同步电机得到了越来越广泛的应用，其主要用途之一是作为电动汽车的驱动电机，但是它的的转子结构特殊，即便是在转速不是特别高的情况下，转子铁芯的某些部位也可能会发生疲劳断裂，因此，也需要使用高强度无取向电工钢。 在国外，对高强度无取向电工钢研究最多的是日本，其从2