The non-oriented silicon steel transformer core is an indispensable carbon-containing ferrosilicon soft magnetic alloy that is indispensable in the power, electronics and military industries. It is also the most productive metal functional material, and its output accounts for about 1% of the world's steel output. A silicon-iron alloy containing 0.8% to 4.8% of silicon is hot-rolled and cold-rolled into a silicon steel sheet having a thickness of 1 mm or less. The addition of silicon increases the electrical resistivity and maximum magnetic permeability of iron, reduces coercivity, core loss (iron loss) and magnetic aging, and is mainly used as the core of various motors, generators and transformers.
Classification of non-oriented silicon steel transformer core
1. Non-oriented silicon steel transformer can be divided into low silicon and high silicon according to different silicon content of silicon steel sheet: low silicon wafer contains less than 2.8% silicon, it has certain mechanical strength, mainly used for manufacturing motor, commonly known as motor Silicon steel sheet; high silicon wafer contains 2.8%-4.8% silicon. It has good magnetic properties but is brittle. It is mainly used to manufacture transformer cores, commonly known as transformer silicon steel sheets. There is no strict limit between the two in actual use, and high-silicon wafers are often used to manufacture large motors.
2. Non-oriented silicon steel transformer core can be divided into hot rolling and cold rolling according to the production and processing technology. Cold rolling can be divided into two types: grain orientation and grain orientation. The cold rolled sheet has uniform thickness, good surface quality and high magnetic properties. Therefore, with the development of the industry, the hot rolled sheet has a tendency to be replaced by cold rolled sheets.