Method for promoting growth of GOSS textures of silicon steel strips by using pulse current

Abstract

The invention discloses a method for promoting growth of GOSS textures of silicon steel strips by using pulse current. The method comprises the following steps of: conveying the silicon steel strips at the speed of 2 to 10 meters per minute under the drive of a conveying device; and guiding the pulse current of a pulse power supply to a moving silicon steel strip electrifying zone through a pair of electric contact devices, and performing electric stimulation treatment on the silicon steel strip electrifying zone in air atmosphere to promote the generation of a large amount of GOSS textures in the primary re-crystallization process, wherein the silicon steel strips are in a high magnetic induction cold-rolled state, the thickness of the silicon steel strips is 0.1 to 0.5 millimeter, the width of the silicon steel strips is 10 to 150 millimeters and the silicon content of the silicon steel strips is 0.5 to 6.5 percent. Compared with the traditional thermal treatment furnace annealing treatment process, the method has the advantages of low energy consumption, high production efficiency and low production cost, and the GOSS textures in the primary re-crystallization process have manycomponents. By electron back-scattered diffraction (EBSD) detection, the GOSS texture content of the silicon steel strips treated by adopting electric stimulation of the pulse current reaches 15 to 25 percent.

Description

technical field [0001] The invention belongs to the treatment process of silicon steel strip, in particular a method for promoting the growth of GOSS texture in the primary recrystallization process of silicon steel strip by using pulse current. Many parts, low energy consumption, high production efficiency, and does not require gas protection. Background technique [0002] At present, in order to achieve the purpose of saving energy and protecting the environment, the focus of global attention is on the production process of high-oriented silicon steel, and silicon steel with high-oriented GOSS (Gauss) texture has high magnetic induction, low iron loss, and magnetic induction. It has the characteristics of small expansion and good surface quality, and has become the focus of research and development in the iron and steel fields of various countries. In the production of high magnetic induction silicon steel, in order to obtain a GOSS texture with a high degree of orientati...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the problems of high energy consumption and low efficiency in the crystallization process of existing high magnetic induction silicon steel, the present invention provides a method for promoting the growth of GOSS texture of silicon steel strips by using pulse current, so as to reduce energy consumption and improve efficiency. Promote the formation of a large number of GOSS textures in the primary recrystallization process of silicon steel strips, which in turn facilitates the subsequent secondary recrystallization, and obtains silicon steel strips with excellent magnetic properties

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