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CGO-oriented Silicon Steel

CGO (Cold Rolled Grain Oriented) silicon steel is a specialized type of electrical steel that has been processed to achieve a highly preferred crystallographic grain orientation. This orientation is primarily in the rolling direction, which significantly improves the material's magnetic properties along this axis. The term "Cold Rolled" refers to the manufacturing process where the steel is rolled at room temperature to achieve precise thickness and superior surface quality.
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CGO (Cold Rolled Grain Oriented) silicon steel is a specialized type of electrical steel that has been processed to achieve a highly preferred crystallographic grain orientation. This orientation is primarily in the rolling direction, which significantly improves the material's magnetic properties along this axis. The term "Cold Rolled" refers to the manufacturing process where the steel is rolled at room temperature to achieve precise thickness and superior surface quality.



CGO-oriented Silicon Steel Finished Products


Characteristics of CGO Oriented Silicon Steel


  • Grain Orientation: The material has a preferred crystallographic orientation, specifically aligned along the rolling direction, which greatly enhances its magnetic properties in that direction.

  • High Permeability: CGO silicon steel exhibits high magnetic permeability, especially in the direction of grain orientation, which facilitates efficient magnetic flux management.

  • Low Core Losses: Due to its unique grain structure, it has lower core losses compared to non-grain-oriented types, contributing to improved efficiency and reduced heat generation in applications like transformers.

  • Magnetic Anisotropy: It displays strong magnetic anisotropy, meaning its magnetic properties vary significantly with direction, being optimal in the rolling direction.

  • Thin Thickness: Typically manufactured to very thin gauges through cold rolling processes, allowing for more laminations per unit volume in transformer cores, which helps reduce eddy current losses.

  • Surface Insulation Coating: To minimize eddy currents, which can cause energy losses, the steel sheets are coated with an insulating layer during the manufacturing process.

  • Consistent Texture and Quality: Through controlled processing, CGO silicon steel achieves a uniform texture and superior quality, ensuring reliable performance in electrical equipment.


SPECIFICATIONSTANDARD DIMENSIONS OF PRODUCTSSTANDARD DIMENSIONS OF PRODUCTS

Manufacturing Process

The production of laser-oriented silicon steel begins with the rolling of silicon steel sheets, during which the grains are oriented. Afterward, a laser inscribing machine precisely etches the surface of the steel sheet according to predetermined patterns. Following the laser treatment, the sheets may undergo additional processes like annealing to relieve internal stresses and further optimize the material's magnetic properties.


In summary, laser-oriented silicon steel represents an advancement in materials technology aimed at improving the efficiency and performance of electrical devices. Its unique characteristics make it a valuable component in modern power electronics, contributing to both economic and environmental benefits.

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FAQ


Q1: Is there a standard specification for CGO silicon steel?

A1: Yes, international standards such as IEC 60404-5 and ASTM A976 specify the requirements for CGO silicon steel, including its physical properties, manufacturing processes, and testing methods.


Q2: Can CGO silicon steel be recycled?

A2: Yes, CGO silicon steel is recyclable. At the end of its service life, it can be processed for recycling into new steel products, contributing to sustainability efforts.


Q3: What are the environmental benefits of using CGO silicon steel in transformers?

A3: By improving the efficiency of transformers, CGO silicon steel helps reduce energy losses during power transmission and distribution, thereby lowering greenhouse gas emissions associated with electricity generation.


Q4: Are there any limitations or disadvantages to using CGO silicon steel?

A4: One limitation is that its magnetic properties are highly directional, so it must be used with its grains aligned with the magnetic field direction for optimal performance. Misalignment can result in sub-optimal performance.


Q5: How does the cost of CGO silicon steel compare to other types of electrical steel?

A5: Generally, CGO silicon steel is more expensive than non-grain-oriented silicon steel due to its specialized manufacturing process and superior performance characteristics. However, the long-term savings in energy efficiency often justify the initial cost.


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Shanghai JISCO Electrical Technology Co., Ltd. is established in 2020. Shanghai JISCO is dedicated to the R&D, production, and sales of transformer cores, cut laminations, and slit coils. Located in Baoshan District, Shanghai, it occupies an area of 33,000 m², including a 12,000 m² digital factory. The company operates 3 slitting lines, 12 cross-cutting lines

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