Analytical Method of Effect of Grain Size on Magnetic Properties of Non-oriented Silicon Steel Based on Principal Component Regression Analysis
A principal component regression, oriented silicon steel technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the problem of revealing the relationship between grains of different sizes and the magnetic properties of non-oriented silicon steel, which is rare, etc.
Active Publication Date: 2016-06-15
UNIV OF SCI & TECH BEIJING
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[0003] At present, there have been a lot of researches on the influence of grain size on the magnetic properties of non-oriented silicon steel at home and abroad, but the relationship between grain size and magnetic properties has only been examined qualitatively from the aspects of average grain size statistics and impact mechanism. It can reveal the relationship between grains of different sizes and the magnetic properties of non-oriented silicon steel from a quantitative point of view, and there are few domestic and foreign researches on establishing mathematical models to analyze this problem
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[0034] The present invention will be further explained and illustrated below in conjunction with the embodiments and accompanying drawings.
[0035] The embodiment adopts the non-oriented silicon steel product test samples provided by a steel factory after continuous casting, hot rolling (2.6mm thick), cold rolling (0.5mm thick), continuous annealing and surface coating, and selects 10 groups of magnetic properties. Different samples were studied, and the magnetic properties of each group of samples are shown in Table 2.
[0036] The magnetic property of table 2 embodiment sample
[0037]
[0038]
[0039] Use the EBSD system of ZEISSULTRA55 field emission scanning electron microscope and Channel5 orientation analysis software to measure the content of grains in different size ranges of statistical samples. The observation surface of the sample is divided into rolled surface and longitudinal section, at 100 to 200 times, preferably 100 times the field of view Next, the ...
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The invention relates to a method for analyzing the influence of grain size on the magnetic properties of non-oriented silicon steel based on principal component regression analysis. Including steps: determination of the content of grains in different size ranges in non-oriented silicon steel; standardization of all data; dimensionality reduction processing of content data of grains in different size ranges; calculation of eigenvalues, determination of principal components and their expressions; regression Analyze and test the significance of the regression equation; use the inverse operation of the standard deviation standardization method to convert the regression equation into a multiple linear relationship between the grain content of different size ranges and the magnetic properties of non-oriented silicon steel. The present invention can effectively analyze multivariate problems, obtain main information from intricate influencing factors to quantitatively analyze multivariate linear relationships among variables, and quantitatively reflect the law that the content of grains in different size ranges affects the magnetic properties of non-oriented silicon steel , to provide directional guidance for the actual production of high-efficiency electrical steel products with lower iron loss and high magnetic induction.
Description
technical field [0001] The invention belongs to the technical field of performance control of non-oriented silicon steel, and in particular relates to an analysis method based on principal component regression analysis of the influence of grain size on the magnetic properties of non-oriented silicon steel. Background technique [0002] With the rapid development of electric power, telecommunications and other industries, all kinds of generators, motors, compressors and other products are required to be high-efficiency, high-precision, and miniaturized to meet the standards of energy saving and environmental protection. Non-oriented silicon steel is an important material for manufacturing these products. Materials are increasingly required to have excellent magnetic properties with lower iron loss and high magnetic induction. Relevant studies have shown that grain size is the main factor affecting the loss of non-oriented silicon steel. Analyzing the influence of grain conten...
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IPC IPC(8): G06F17/50
Inventor 赵志毅陈凌峰王宝明黄赛闻强苗李平潮薛润东
Owner UNIV OF SCI & TECH BEIJING