Improving the properties of hot-rolled silicon steel: a low nitrogen modification method for annealing furnaces


Release time:

2024-04-28

Hot-rolled silicon steel is a key soft magnetic material, which is widely used in power and electronic equipment. Through the low nitrogen transformation, it is conducive to improving the magnetic properties of silicon steel to meet the needs of the power and electronic equipment industry.

Hot-rolled silicon steel is a key soft magnetic material, which is widely used in power and electronic equipment. Its performance directly affects the energy efficiency and reliability of the equipment. Nitrogen content is one of the important factors affecting the properties of silicon steel. The properties of silicon steel can be effectively improved by the low nitrogen modification of annealing furnace.

Hot-rolled silicon steel has excellent magnetic properties due to its high silicon content. The magnetic properties are affected by many factors, among which the presence of nitride inclusions is an important factor. It will reduce the permeability of the material and increase the iron loss. The nitrogen content can be effectively controlled and the performance of hot-rolled silicon steel can be improved.

In the production process of hot-rolled silicon steel, steelmaking equipment, hot tandem rolling mill, cold rolling mill and other key equipment are very important to improve the microstructure and magnetic properties of the material. Throughout the entire production process, precise control and technological innovation are required at every step to ensure that the final product has excellent magnetic properties.

In the annealing process, the solubility of nitrogen in silicon steel is very low, it is easy to form nitride inclusions, which is difficult to remove in the annealing process, low nitrogen transformation is to reduce the nitrogen content, thereby reducing the production of nitride debris, effectively optimize the magnetic properties of materials.

Low nitrogen transformation can be effectively achieved through the following aspects:

1, in the circuit or converter smelting process, the use of nitrogen removal technology to optimize the production quality.

2, the effective control of raw materials, choose low nitrogen raw materials, such as scrap steel and ferroalloy.

3, adjust the annealing furnace process to promote the decomposition and removal of nitride.

In the actual production process, the low nitrogen modification can effectively reduce the nitride inclusions and improve the magnetic properties of silicon steel. By accurately controlling the nitrogen content of raw materials and optimizing the smelting and annealing process, the magnetic properties of silicon steel are effectively improved to meet the needs of the power and electronic equipment industry.