At present, the main grades of non-oriented electrical steel produced by BBN are 50W600,50W800,50W1300, etc., especially the amount of 50W800 silicon steel is the most, and its output account for more than 70%. The width of non-oriented electrical steel plate produced by such private enterprises is mostly 1200mm, which requires high bandwidth uniformity of hot rolling coil and no obvious local narrow ruler defect.
On the other hand, 50W800 silicon steel is mainly used in household appliances and small and medium-sized electrical machinery factories. In order to meet the requirements of high performance and quality of end users, it is urgent to increase the magnetic induction intensity of 50W800 silicon steel from 1.70~1.73T in the past to more than 1.75T, because it has been found in the practical application of electrical products for several years. Improve the magnetic induction strength of 50W800 silicon steel, can make the design of electrical products more delicate, more power saving, smaller volume.
In the large-scale production of unoriented electrical steel, in addition to the ferromagnetic properties of 50W800 silicon steel, the hot rolled strip steel is prone to local narrow ruler defects, so the precision control of plate width is also an important quality index.
In the process of cutting edge of cold rolling pickling unit, the narrow size part of hot coil is often caused by the lack of width, which leads to local edge cutting. In order to prevent pulling in the cold rolling process, it is often necessary to cut off all the strip after the uncut edge, resulting in a large loss of strip yield.
Therefore, in the production and development of non-oriented silicon steel, BBN focuses on the influence of silicon content and hot rolling parameters on strip width accuracy and magnetic induction strength of 50W800 silicon steel on the basis of ensuring the control level of chemical composition and purity of 50W800 silicon steel, in order to meet the downstream users' requirements for large volume and wide area of 50W800 silicon steel and higher ferromagnetic properties.
Just like you, 70% customers choose long-term cooperation with BBN steel not only for our good product and service quality, good reputation in the international market, but also for our experienced one-stop raw material supply and further steel processing!
