1. Shougang Zhixin Qian′an Electromagnetic Materials Co., Ltd.， Qian′an 064404, Hebei, China 2. School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing， Beijing 100083, China
Abstract：The present production status including nitriding process development of high magnetic induction grain- oriented silicon steel (Hi- B) in China are summarized, and the relevant technologies and the corresponding patent reserves in some major electrical steel producers are analyzed. With the change of market demand, the proportion of high permeability oriented silicon steel is getting higher. The patent layout of production enterprises has also turned to the development of Hi- B steel. The development of environmentally- friendly products has become a new focus. Although Hi- B production using the thin slab casting and direct rolling and the twin- roll strip casting processes has made great progress, there are still considerable distances for commercial applications. The future development of high permeability oriented silicon steel is discussed.
2019, Vol. 29 
