Characteristics and Uses of Low Noise Oriented Silicon Steels

07 Dec 2023
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GNEE Steel Cold Rolled Grain Oriented Steel

Low noise oriented silicon steels, also known as low-noise electrical steels, are specialized materials designed to reduce the noise generated by magnetic cores in electrical devices. These steels are used primarily in applications where low noise emissions are critical, such as power transformers, electrical motors, and generators. Let's delve into the characteristics and uses of these materials:

oriented silicon steel coil

Characteristics of Low Noise Oriented Silicon Steels:

  1. Grain Orientation: These steels are produced with a highly oriented grain structure, which reduces the magnetostriction effect. Magnetostriction is the phenomenon where the magnetic domains within a material change shape in response to a magnetic field, leading to mechanical vibrations and noise.

  2. Low Core Loss: Low noise oriented silicon steels have low core loss properties. Core loss refers to the energy dissipated as heat within the core material due to alternating magnetic fields. Reduced core loss leads to lower heat generation and improved efficiency.

  3. High Magnetic Permeability: These steels exhibit high magnetic permeability, allowing them to efficiently conduct and channel magnetic flux. This property is crucial for the effective functioning of transformers and other magnetic devices.

  4. Reduced Hysteresis Loss: Hysteresis loss occurs when the magnetic domains in a material align with changing magnetic fields. Low noise silicon steels have minimized hysteresis loss, contributing to lower energy losses and less heat generation.

  5. Silicon Content: These steels have a high silicon content, which enhances their electrical resistivity and magnetic properties.

  6. Surface Insulation: The steels are often coated with a thin insulating layer to reduce eddy current losses, which occur due to circulating currents induced by magnetic fields.

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