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Electrical grade sheet electro-magnetism performance measurement method

A measuring method and technology for electrical steel plates, applied in the field of inspection

Inactive Publication Date: 2011-07-27
ANGANG STEEL CO LTD
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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for measuring the electromagnetic properties of electrical steel sheets. Through the EBSD test results of the sample, the electromagnetic properties of the material can be deduced by using the correlation correction coefficient, so as to solve the problem that the electromagnetic properties of the sample cannot be measured due to the limitation of the sample size and quantity. measurement problem

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  • Electrical grade sheet electro-magnetism performance measurement method
  • Electrical grade sheet electro-magnetism performance measurement method
  • Electrical grade sheet electro-magnetism performance measurement method

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Embodiment Construction

[0012] A kind of measuring method of the electromagnetic property of electrical steel plate of the present invention is:

[0013] 1. Use the EBSD system to measure the Euler angle of each point orientation on the cross-section of the sample, and ensure that the orientation information of each point on the entire thickness of the steel plate is measured.

[0014] 2. For the measurement of the magnetic properties of non-oriented silicon steel, by calculating the angle between the (100) crystal plane and the rolling surface of the grains at each point, the orientation points with the same angle are combined into the same orientation, and the proportion of each orientation is calculated X i ; For the measurement of the magnetism of grain-oriented silicon steel, first calculate the angle between the crystal direction of each grain and the rolling direction, and merge the orientation points with the same angle into the same orientation, and calculate the proportion of each orientati...

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Abstract

The invention discloses a method of measuring electromagnetic performance of electric steel plates, which is characterized by measuring three Euler angles of each sample point orientation in an EBSD system and occupied proportion X of each identical or similar orientation, combining with conjectured coefficient of thickness fH, composition fc and influential factor (e) of misorientation on performance, applying these factors to modify the measuring on the basis of pure iron performance B<theta>, which is applicable for small quantity of samples that cannot be measured by Epsteinframe, manifesting performance of each micro area of the sample and enabling good effect for the process improvement of the material with the same composition. In addition, the invention provides statistical calculation of crystal orientation of each orientation (100) in the measuring of non-oriented silicon steel, thereby reflecting the general magnetic property of steel plates.

Description

technical field [0001] The invention relates to the detection field, in particular to a method for measuring the electromagnetic properties of electrical steel sheets. Background technique [0002] The Epstein square circle method is used to measure the magnetic properties of electrical steel. The surface quality of the steel plate will have a certain impact on the performance test. The measurement of electromagnetic properties by this method can only reflect the overall performance of electrical steel macroscopically, and has a certain impact on the number and specifications of samples. Require. For non-oriented silicon steel, this method only measures the horizontal and vertical electromagnetic properties of the steel plate, while non-oriented silicon steel is applied in a rotating magnetic field, and requires good performance in all directions on the rolling surface. Therefore, this method cannot reflect the actual level of non-oriented silicon steel. For example, the h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/00G01R33/12
Inventor 张智义高振宇李文权李斌罗理王开宇张仁波于爽
Owner ANGANG STEEL CO LTD
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