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Electrical steel

Silicon steel, also called electrical steel, can be divided into hot-rolled silicon steel and cold-rolled silicon steel. Hot-rolled silicon steel is gradually being eliminated due to its low availability and high energy loss. Cold-rolled silicon steel is the focus of future development due to its high technical content and low loss. Cold-rolled silicon steel is divided into: cold-rolled oriented silicon steel and cold-rolled non-oriented silicon steel.

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  • Introduction
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GNEE STEEL high-grade non-oriented electrical steel products are indispensable and important soft magnetic functional materials for high-efficiency and energy-saving motors and compressors. 35SW300 is a high-grade non-oriented electrical steel product. The product specification is 0.35mm × (950-1250) mm. GB/T 2521.1-2016 standard. This product is positioned as high-end and has excellent quality. It has the advantages of low iron loss, high magnetic induction, precise size and shape control, and excellent surface quality.

The main use of cold-rolled oriented silicon steel is for transformer manufacturing, so it is also called cold-rolled transformer silicon steel. HiB steel in oriented silicon steel is called high magnetic induction cold-rolled oriented silicon steel. Due to its good magnetic permeability and low loss characteristics, it is mainly used in various high-voltage transformers, chokes and other electromagnetic components in the telecommunications and instrumentation industries. In production. Non-oriented silicon steel is mainly used in generator manufacturing.

The two most important indicators of grain-oriented silicon steel are: magnetic induction and unit loss value. The higher the magnetic induction, the stronger the magnetic permeability, the smaller the iron core can be, and the iron loss and copper loss will be reduced. At the same time, the amount of material can be saved and the total cost can be reduced. The lower the specific loss value, the better it can be used in large transformers. Different types of oriented silicon steel can be applied to different voltage levels and types of transformers due to different indicators such as magnetic induction and loss.

How to represent electrical steel grades

1. Chinese brand representation method:

(1) Cold-rolled non-oriented silicon steel strip (sheet) expression method: DW + iron loss value (at a frequency of 50HZ, the magnetic induction peak value of a sinusoidal waveform is the iron loss value per unit weight of 1.5T.) + 100 times the thickness value 100 times. For example, DW470-50 represents cold-rolled non-oriented silicon steel with an iron loss value of 4.7w/kg and a thickness of 0.5mm. The new model is now represented as 50W470.

(2) Expression method for cold-rolled oriented silicon steel strips (sheets): DQ + iron loss value (the iron loss value per unit weight at a frequency of 50HZ and a sinusoidal magnetic induction peak value of 1.7T.) + 100 times the thickness value times. Sometimes G is added after the iron loss value to indicate high magnetic induction. For example, DQ133-30 represents a cold-rolled oriented silicon steel strip (sheet) with an iron loss value of 1.33 and a thickness of 0.3mm. The new model is now represented as 30Q133.

(3) Hot-rolled silicon steel plate Hot-rolled silicon steel plate is represented by DR. According to the silicon content, it is divided into low silicon steel (silicon content ≤ 2.8%) and high silicon steel (silicon content > 2.8%). Representation method: DR + 100 times the iron loss value (the iron loss value per unit weight when the maximum magnetic induction intensity is 1.5T with 50HZ repeated magnetization and sinusoidal change) + 100 times the thickness value. For example, DR510-50 represents a hot-rolled silicon steel plate with an iron loss value of 5.1 and a thickness of 0.5mm. The grade of hot-rolled silicon steel sheet for household appliances is represented by JDR + iron loss value + thickness value, such as JDR540-50.

2. Japanese brand representation method:

(1) Cold-rolled non-oriented silicon steel strip is composed of nominal thickness (value expanded by 100 times) + code A + iron loss guaranteed value (value expanded by 100 times when the frequency is 50HZ and the maximum magnetic flux density is 1.5T) . For example, 50A470 represents a cold-rolled non-oriented silicon steel strip with a thickness of 0.5mm and a guaranteed iron loss value of ≤4.7.

(2) Cold-rolled oriented silicon steel strip is composed of nominal thickness (value expanded by 100 times) + code G: indicating ordinary materials, P: indicating high orientation materials + iron loss guaranteed value (frequency is 50HZ, maximum magnetic flux density is 1.7T The value after the iron loss value is expanded by 100 times). For example, 30G130 represents a cold-rolled oriented silicon steel strip with a thickness of 0.3mm and a guaranteed iron loss value of ≤1.3.

3. The American brand has

M15_24G, M15_26G, M19_24G, M19_26G, M19_29, M22_24G, M22_26G, M22_29G, etc. These brands are all American standards.

Product Advantages

1.Stable performance
2.Excellent processing performance: High precision dimension and excellent mechanical properties make it easy to be sheared,punched and stacked by high speed punch machine. It also have good welding performance.
3.Excellent performance of Insulating coating: Uniform color, good insulation, high adhesion and excellent heat resistance.

Specification Parameters
Basic Information
Product Name
Electrical Steel, Silicon Steel, motor Steel
Category
Grain-Oriented Electrical Steel; Non-oriented electrical steel
Standard
AISI, ASTM,  DIN, GB, JIS, EN
Thickness
0.35mm,0.50 mm,0.65mm
Width
50-1250 mm

 

Grade
Yeild Strength(N/mm2)
Ultra-tension strength(N/mm2)
Ductility(%)
Hardness
M35W230
430
560
20
225
M35W250
415
550
20.5
220
M35W270
400
515
20.5
215
M35W300
360
480
21.5
195
M35W360
350
480
23.5
190
M35W440
275
420
27.5
165
M35W550
265
415
33.5
160
M50W250
430
560
19
230
M50W270
410
550
21.5
225
M50W290
395
545
22.5
220
M50W310
385
510
24.5
210
M50W350
350
475
26.5
190
M50W400
320
460
36
170
M50W470
295
425
35
160
M50W600
280
410
37
140
M50W800
285
405
38.5
135
M50W1300(D)
250
360
40
115

 

Insulating Coating
Coating types
M11
M21
Component
Chromium containing , semi organic coating
Chromium free, semi organic coating
Coating thickness(μm)
0.7~1.5
0.8~5.0
Interlayer resistance(Ω•mm2 /slice)
≥100
≥100
Adhesive property
Class A or class B
Class A or class B
Punching property
Excellent
Excellent
Antirust property
Excellent
Excellent
Heat resisting property
Resistant annealing at 750 C, N2 protection, for 2h
Annealing resistance in general
Service Support
Electrical steel

FAQ

1. Q:Are you a factory or trading company?
A: We are a factory with more than 16 years’ experience

2. Q:What is the MOQ.?
A:Generally speaking, Our MOQ needs to be judged according to yourrequirements. but if your quantity is small and conventional, we can supply youfrom our stock.

3. Q:How to know your quality guarantee?
A:Visiting Our factory is the best way to know each other and the ThirdInspection can prove our products’ quality.

4. Q: What’s your advantage?
A: We specialize in the production of silicon steel and constantly improveour production technology.

5.Q: What service do you offer?
A: Customized service for each customer, please feel free to contact us!