Model No.: 27RK085 27RK090 27RK095 27RK100
Brand: Houming
Standard: Gb
Whether Alloy: Is Alloy
Tolerance: ±1%
Processing Service: Bending, Welding, Decoiling, Punching, Cutting, Bending
Tolerance: ±1%
Transportation: Ocean,Land
Place of Origin: China
Port: Qingdao,Shanghai,Tianjin
Payment Type: L/C,T/T,D/P,D/A
Incoterm: FOB,CFR,CIF,EXW
Oriented Silicon Steel Cold Rolled For Large Transformers
With the rapid development of the world economy, especially driven by the Chinese economy, the production and demand of electrical steel in the world have been growing year by year. At the same time, in order to reduce the cost of electrical products and equipment, enterprises are also paying more and more attention to the development and research of low-cost, high-performance new electrical steel products.
Cold Rolled Steel Coil The difference between oriented silicon steel and non-oriented silicon steel 1. Difference in properties
Oriented silicon
Steel Coil: Oriented silicon steel is also called cold-rolled transformer steel. It (oriented silicon steel) is an important ferrosilicon alloy used in the transformer (core component iron core) manufacturing industry.
| Type | Nominal thickness mm | Tensile strength N/mm² | Elongation | HV5 Hardness | Number of bends | Lamination factor % |
| L | C | T |
| Domamin refined high induction | 0.18 | 368 | 417 | 13 | 177 | 22 | 96.5 |
| 0.20 | 367 | 433 | 13 | 177 | 22 | 97.0 |
| 0.23 | 342 | 417 | 6 | 177 | 20 | 97.2 |
| 0.27 | 352 | 426 | 8 | 176 | 17 | 97.5 |
| 0.30 | 336 | 408 | 9 | 177 | 19 | 98.0 |
Non-oriented silicon steel coil: Non-oriented silicon steel is a ferrosilicon alloy with very low carbon content. After deformation and annealing, its grains are distributed in an irregular orientation in the
Steel Plate.
2. Different characteristics of oriented silicon steel and non-oriented silicon steel
Oriented silicon steel: The magnetism of oriented silicon steel has a very strong directionality. Its iron loss value is the lowest in the rolling direction, and its magnetic permeability is the highest. It has a high magnetic induction value under a certain magnetizing field. The silicon content of oriented silicon steel is about 3%, and the oxide inclusion content in the steel is required to be low. At the same time, it must contain some inhibitors (MnS, A1N).
Non-oriented silicon steel: Non-oriented silicon steel contains 0.8%-4.8% silicon ferrosilicon alloy, which is hot-rolled and cold-rolled into silicon steel sheets with a thickness of less than 1mm. Adding silicon to steel can increase the resistivity and maximum magnetic permeability of iron, reduce coercivity, core loss (iron loss) and magnetic aging.
| Type | Varieties |
| Conventional Silicon | Large motors |
| Large transformers |
| Medium and small transformers |
| Distributing transform |
| Voltage regulator |
| Reactor and magnetic amplifier |
| Mutual inductor |
| TV transformer |
| Radio transformer |
| Reactor and magnetic amplifier | Large motors |
| Large transformers |
| Medium and small transformers |
| Distributing transform |
| Voltage regulator |
| Reactor and magnetic amplifier |
| IF transformer |
| Mutual inductor |
| TV transformer |
| Radio transformer |
| Domain refined high induction | Large transformers |
| Medium and small transformers |
| Reactor and magnetic amplifier |
3. Different production processes for steel coils
Oriented silicon steel: Oriented silicon steel is smelted in an oxygen converter, and then the billet is hot rolled, normalized, cold rolled, intermediate annealed and cold rolled to the finished thickness, then decarburized and annealed at high temperature, and finally coated with an insulating layer.
Non-oriented silicon steel: The molten iron is pre-desulfurized, and Ca0+CaF: flux or rare earth elements and calcium are added during converter blowing. The boiling molten steel is further desulfurized after vacuum treatment and decarburization. Ferrosilicon with low titanium and zirconium content is selected for alloying.
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