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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
    • Parameters
    • Service

    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!