Non-oriented silicon steel can be effectively divided into low silicon and high silicon according to the silicon content in the process of use. Low silicon wafer contains less than 2.8% silicon, it has a certain mechanical strength, mainly used in the manufacture of motors, commonly known as motor silicon steel sheets; high silicon wafers contain 2.8%-4.8% silicon, which has good magnetic properties, but is brittle, mainly used In the manufacture of transformer core, commonly known as transformer silicon steel sheet. There is no strict limit 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 hot rolling and cold rolling according to the production and processing technology, and cold rolling can be divided into two types: no 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 (China has explicitly requested to stop using hot rolled silicon steel sheets, which is also mentioned in the previous period). To replace the heat with cold").
Non-oriented silicon steel is a silicon steel sheet which forms a non-oriented deformed textured crystal structure according to a certain production process.
1. Both are cold rolled silicon steel sheets, but the silicon content is different. The cold rolled non-oriented silicon steel sheet has a silicon content of 0.5% to 3.0%, and the cold rolled oriented silicon steel sheet has a silicon content of 3.0% or more.
2. Differences in production process and performance: Non-oriented silicon steel sheets are relatively less technically demanding than oriented silicon steel sheets.
3, performance and use: due to the different performance characteristics of the two, there are differences in the direction of use of cold-rolled non-oriented silicon steel sheet is mainly used for generator manufacturing, it is also known as cold-rolled motor silicon steel. The main purpose of the cold-rolled oriented silicon steel strip is for transformer manufacturing, so it is also called cold-rolled transformer silicon steel.