Non-oriented silicon steel can be divided into low silicon and high silicon according to its silicon content. Low silicon wafers contain less than 2.8% silicon, which has a certain mechanical strength and is mainly used in the manufacture of motors, commonly known as motor silicon steel sheets.
The silicon content of high silicon wafer is 2.8%-4.8%. 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 boundary between the two in actual use, and high silicon wafers are often used to manufacture large motors.
Non-oriented silicon steel can be divided into two types: hot rolling and cold rolling according to the production and processing technology, and cold rolling can be divided into two types: non-oriented grain and grain oriented. Cold-rolled sheets have uniform thickness, good surface quality and high magnetic properties. Therefore, with the development of industry, hot-rolled sheets tend to be replaced by cold-rolled sheets. (my country has clearly requested to stop the use of hot-rolled silicon steel sheets, which is also known as "replacing heat with cold")
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