1. School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China; 2. Cold Rolling Department, Shougang Qian'an Iron & Steel Co., Ltd., Qian'an 064404, China
Abstract：Different size intervals of inclusions in cold rolled non-oriented silicon steel 50SW1300 were counted by scanning electron microscope (SEM), field emission scanning electron microscope (FE-SEM) and energy disperse spectroscopy (EDS). With principal component regression method: standardization for experimental data, principal component analysis, regression analysis, transform standardized variables into original variables, determination of significant factor, effects of the total number of inclusions and the quantity of each size intervals of inclusions on magnetic properties of non-oriented silicon steel were comprehensively analyzed. The results show that the main factors can be extracted by principal component regression from multi-factors such as the total number of inclusions and the quantity of each size intervals of inclusions,which used to quantitatively research the influence on magnetic properties. It is indicated that the inclusions which significantly affect the core loss of non-oriented silicon steel are AlN, AlN+MnS, MnS, Al2O3, AlN+Al2O3 and the size interval is 100 to 500 nm, and the inclusions in the range of 100 to 200 nm reduce the magnetic induction greatly.
Gutiérrez-Casta-eda E J, Salinas-Rodríguez A. Effect of annealing prior to cold rolling on magnetic and mechanical properties of low carbon non-oriented electrical steels [J]. Journal of Magnetism and Magnetic Materials, 2011, 323(20): 2524-2530.
[2]
Steiner Petrovic D, Markoli B, Ceh M. The nanostructure of non-oriented electrical steel sheets [J]. Journal of Magnetism and Magnetic Materials, 2010, 322(20): 3041-3048.
[3]
张智义, 毛卫民, 高振宇, 等. 工艺参数对冷轧无取向硅钢再结晶织构的影响[J]. 材料热处理学报 (Transactions of Materials and Heat Treatment), 2010, 31(6): 102-105.
[4]
Paolinelli S C, da Cunha M A. Development of a new generation of high permeability non-oriented silicon steels [J]. Journal of Magnetism and Magnetic Materials, 2006, 304(2): 596-598.
[5]
Chaudhury A, Khatirkar R, Viswanathan N N, et al. Low silicon non-grain-oriented electrical steel: Linking magnetic properties with metallurgical factors [J]. Journal of Magnetism and Magnetic Materials, 2007, 313(1): 21-28.
郭艳永, 蔡开科, 骆忠汉, 等. 钙处理对冷轧无取向硅钢磁性的影响[J]. 北京科技大学学报 (Journal of University of Science and Technology Beijing), 2005, 27(4): 427-430.
[9]
Bóc I, Cziráki , Gróf T, et al.Analysis of inclusions in cold-rolled no Si-Fe strips [J]. Journal of Magnetism and Magnetic Materials, 1990, 83(1): 381-383.
[10]
牛京考. 基于主成分回归分析法预测中国铁矿石需求[J]. 北京科技大学学报 (Journal of University of Science and Technology Beijing), 2011, 33(10): 1177-1181.
