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M3 CRGO (Cold Rolled Grain Oriented) steel coil is a specific type of cold-rolled silicon steel used in the manufacturing of transformer cores. Here’s what you need to know about M3 CRGO:
Grain Orientation: M3 CRGO is carefully processed to achieve a highly uniform grain orientation, resulting in excellent magnetic properties. The grains are predominantly aligned in a single direction to minimize core losses and maximize the efficiency of transformers.
Cold Rolling: M3 CRGO is produced through a cold-rolling process, where the steel is gradually reduced in thickness at room temperature. This process enhances the material’s magnetic characteristics and allows for precise control over its thickness and surface quality.
Silicon Content: M3 CRGO contains a specific amount of silicon (typically around 3%) to improve its electrical resistivity and reduce eddy current losses. This silicon addition enhances the material’s performance in power transformers and other electromagnetic devices.
Low Core Losses: M3 CRGO exhibits lower core losses compared to non-oriented silicon steel. The highly oriented grain structure contributes to reduced hysteresis and eddy current losses, resulting in improved energy efficiency and lower heat generation during transformer operation.
Optimized Magnetic Permeability: M3 CRGO offers high magnetic permeability in the rolling direction, facilitating efficient magnetic flux transfer within the transformer core. This property ensures efficient energy conversion and transmission in electrical equipment.
Transformer Applications: M3 CRGO cold-rolled steel coils are primarily used in the construction of power transformers, where energy efficiency and reliable performance are critical. The material’s low core losses and high magnetic permeability make it well-suited for high-power transformers, distribution transformers, and other electrical devices.
Overall, M3 CRGO cold-rolled steel coils are designed to provide superior magnetic properties and low core losses, making them an ideal choice for transformers requiring high efficiency and reliable operation.
| Product Name | M3 CRGO Cold Rolled Steel Coil |
| Standard | AISI, ASTM, GB, JIS, DIN |
| Width | 600 – 1250 mm |
| Thickness | 0.18 – 0.65 mm |
| Processing Service | bending, uncoiling, welding, punching, and cutting |
| Supply Ability | 50000 Ton/per month |
*Note: When used at industrial frequency (50Hz), the thickness of the commonly used silicon steel coil is 0.2~0.35mm; when used at 400Hz, it is appropriate to choose 0.1mm thickness. The thinner the thickness, the higher the price.
Highly Oriented Grain Structure: M3 CRGO is processed to have a highly oriented grain structure, where the grains are predominantly aligned in a single direction. This characteristic allows for efficient magnetic flux flow and helps minimize core losses.
Low Core Losses: M3 CRGO exhibits low core losses, which refers to the energy dissipation that occurs within the transformer core. By minimizing core losses, M3 CRGO contributes to enhanced energy efficiency and reduced heat generation in transformers.
Optimized Magnetic Properties: M3 CRGO is engineered to have excellent magnetic properties, including high magnetic permeability in the rolling direction. This property allows for efficient magnetic flux transfer within the transformer core, resulting in improved energy conversion and transmission.
Reduced Eddy Current Losses: Eddy currents are induced circulating currents that can lead to energy losses in transformer cores. M3 CRGO’s highly oriented grain structure helps minimize eddy current losses, contributing to higher efficiency and reduced power wastage.
Consistent and Precise Thickness Control: M3 CRGO is cold-rolled to achieve precise thickness control, ensuring uniformity throughout the coil. This uniform thickness helps maintain consistent magnetic properties and electrical performance in transformers.
Silicon Addition for Improved Electrical Properties: M3 CRGO contains silicon, typically around 3%, which improves the material’s electrical resistivity and reduces eddy current losses. This silicon addition enhances the overall performance of transformers and other electromagnetic devices.
Reliable and Long-Lasting Performance: M3 CRGO cold-rolled steel coils are designed to provide reliable and long-lasting performance in transformer applications. Their optimized magnetic properties and low core losses result in efficient energy transfer and stable electrical output over the life of the transformer.
Power Transformers: M3 CRGO steel coils are extensively used in power transformers, which are responsible for stepping up or stepping down electrical voltage levels for efficient power transmission and distribution. The low core losses and optimized magnetic properties of M3 CRGO contribute to higher energy efficiency in power transformers.
Distribution Transformers: Distribution transformers are responsible for stepping down voltage levels for local distribution. M3 CRGO steel coils help improve the efficiency and reliability of distribution transformers, facilitating the safe and efficient distribution of electricity to homes, businesses, and other locations.
Instrument Transformers: M3 CRGO steel coils are utilized in instrument transformers, such as current transformers and voltage transformers. These transformers are used for accurate measurement and protection purposes in electrical systems, ensuring the safe and reliable operation of equipment.
Inductive Components: M3 CRGO steel coils are also used in the construction of inductive components, such as inductors and reactors, where precise control and transfer of magnetic flux are crucial. These components are widely used in various electrical and electronic devices and systems.
Magnetic Amplifiers: Magnetic amplifiers utilize M3 CRGO steel coils in their design to achieve efficient signal amplification in electrical circuits. These amplifiers find application in various industrial control systems, power electronics, and telecommunications.
High-Power Electrical Devices: M3 CRGO steel coils are employed in high-power electrical devices, including large motors, generators, and magnetic coils, where optimized magnetic properties and low core losses are critical for efficient energy utilization.
