- 材质:
- 硅钢片
- 规格:
- 常规齐全
- 品牌:
- 新日铁宝钢
Classification of steel sheets
Silicon steel sheets can be divided into low silicon and high silicon according to their silicon content. Low silicon wafer contains less than .% silicon. It has a certain mechanical strength and is mainly used to manufacture motors. It is commonly known as motor silicon steel sheet. High silicon wafer has a silicon content of .%.%. It has good magnetic properties but is brittle and is mainly used in manufacturing. Transformer core, commonly known as transformer silicon steel sheet. There is no strict boundary between the two in actual use, and high-silicon wafers are commonly used to manufacture large motors. , According to the production and processing technology, it can be divided into two types: hot rolling and cold rolling. Cold rolling can be divided into two types: grain non-oriented 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 have a tendency to be replaced by cold-rolled sheets (our country has clearly required the discontinuation of the use of hot-rolled silicon steel sheets, which is what was previously called Replace hot with cold).
Steel sheet performance indicators
Low iron loss. The most important indicator of quality, countries around the world use iron loss value to classify grades. The lower the iron loss, the higher the grade and the higher the quality.
The magnetic induction intensity is high. Silicon steel sheets can obtain higher magnetic induction under the same magnetic field. The size and weight of the motor or transformer core made with it are relatively small, which can save silicon steel sheets, copper wires and insulating materials. , High stacking coefficient. The surface of the silicon steel sheet is smooth, flat and uniform in thickness, and the stacking coefficient of the core is improved.
Good film processing properties. This is even more important for manufacturing small and micro motor cores.
The surface has good adhesion and weldability to the insulating film.
Magnetic Aging
Silicon steel sheets must be annealed and pickled before delivery.
1) Hot-rolled silicon steel sheet for electrical use
Hot-rolled silicon steel sheet for electrical use is made of ferrosilicon soft magnetic alloy with low carbon loss, and is hot-rolled into a sheet with a thickness of less than 100 mm. Hot-rolled silicon steel sheets for electrical purposes are also called hot-rolled silicon steel sheets.
Rolled silicon steel sheets can be divided into two types: low silicon (.%) and high silicon (.%) steel sheets according to their silicon content.
2) Cold-rolled silicon steel sheet for electrical purposes
Electrical silicon steel containing .%.% silicon is made of cold-rolled steel.
Rolled silicon steel sheets are divided into two types: grain-non-oriented and grain-oriented steel strips. Cold-rolled electrical steel strip has the characteristics of smooth surface, uniform thickness, high stacking coefficient, and good punching performance. It has higher magnetic induction and lower iron loss than hot-rolled electrical steel strip. Using cold strip instead of hot rolled strip to manufacture motors or transformers can reduce their weight and volume by %%. If cold-rolled oriented strip is used, the performance will be better. Using it instead of hot-rolled strip or low-grade cold-rolled strip can reduce the power consumption of the transformer by %, and the transformer performance will be more reliable.