Hebei Messi Biology Co., Ltd. stated that with the rapid development of my country’s electromechanical industrialization, the entire market demand for silicon steel in special steel has put forward new requirements in terms of quality and quantity, and there is also a huge gap. Therefore, domestic silicon steel sheet production is in a period of vigorous development, and silicon steel grade magnesium oxide, as an important insulating coating material for oriented silicon steel sheet production, is also facing important opportunities and challenges. Energy-saving and environmentally friendly equipment is favored, and the requirements for transformers and motors are developing towards high power miniaturization. The requirements for silicon steel sheets are developing towards ultra-thin high magnetic induction and low energy consumption. To adapt to the current development situation, the first and second generation silicon steel grade magnesium oxides that we have developed and industrialized in the past have shown inadaptability. The production of high magnetic induction oriented electrical steel (Hi-B) and low temperature oriented electrical steel will require silicon steel grade magnesium oxide with higher requirements.
Silicon steel grade magnesium oxide is a high temperature annealing isolation agent and insulating coating forming agent specially used in the production of oriented silicon steel sheets. The main role of silicon steel grade magnesium oxide in high temperature annealing of oriented silicon steel sheets:
1. Prevent silicon steel sheet coils (sheet thickness 035mm-0.25mm) from sintering during high temperature (1250℃, 24×7 hours) annealing.
2. Remove impurities such as S and P in silicon steel.
3. During high temperature annealing, it reacts with SiO on the surface of silicon steel to form a forsterite film, giving the silicon steel sheet insulation resistance and magnetic properties (coercive force), thereby improving the quality of the silicon steel sheet.
Oriented silicon steel sheets are the main material for manufacturing advanced transformers, generators, and motors. my country’s economic development has promoted the development of the electrical industry and driven the demand for silicon steel sheets. The country needs high-quality electrical equipment, which requires high-quality silicon steel sheets. High-quality silicon steel grade magnesium oxide is a must for producing high-quality oriented silicon steel sheets.
At present, domestic magnesium oxide manufacturers lack reliable and mature production technology and R&D capabilities. As the output of oriented silicon steel sheets in my country increases year by year, the consumption of oriented silicon steel grade magnesium oxide in my country also increases year by year, and increases with the gradual increase of the production capacity of oriented silicon steel sheets of Wuhan Iron and Steel. In 2010, the production capacity of oriented silicon steel sheets of Wuhan Iron and Steel has reached 400,000 tons, and the required consumption of silicon steel grade magnesium oxide (6-8kg of silicon steel grade magnesium oxide is required for the production of each ton of oriented silicon steel sheets) will reach about 2,800 tons.