Silicon steel sheet
(1) Hot-rolled silicon steel sheets for electricians (GB5212-85) Hot-rolled silicon steel sheets for electricians are made of ferrosilicon soft magnetic alloy with low carbon loss, and are hot-rolled into sheets with a thickness of less than 1mm. Hot-rolled silicon steel sheets for electrical purposes are also called hot-rolled silicon steel sheets. Hot-rolled silicon steel sheets can be divided into low silicon (Si ≤ 2.8%) and high silicon (Si ≤ 4.8%) steel sheets according to their silicon content.
(2) Cold-rolled silicon steel sheet for electrical purposes (GB2521-88) is made of electrical silicon steel containing 0.8%-4.8% silicon and is made by cold rolling. Cold-rolled silicon steel strips 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 its weight and volume by 0%-25%.
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 45%-50%, and the transformer performance will be more reliable. Used in the manufacture of motors and transformers. Generally, grain-non-oriented cold-rolled strips are used as motors or welding transformers, etc.; grain-oriented cold-rolled strips are used as iron cores for power transformers, pulse transformers, magnetic amplifiers, etc. Steel plate specifications and dimensions: thickness is 0.35, 0.50, 0.65mm, width is 800-1000mm, length is ≤2.0m.
(3) Hot-rolled silicon steel sheet for home appliances (GBH46002-90) The grade of hot-rolled silicon steel sheet for home appliances is represented by J (home) D (electricity) R (hot rolled), which is JDR. The number after JDR is the iron loss value * 100, and the number after the horizontal line is the steel plate thickness (mm) * 100. Hot-rolled silicon steel sheets for home appliances can have slightly lower electromagnetic performance requirements, and the minimum iron loss value (P15/50) is 5.40W/kg. Generally delivered without washing. Differential motors used in various electric fans, washing machines, vacuum cleaners, range hoods and other household appliances.
