Laminated steel core forming the magnetic circuit in electric motor/generator rotors
A rotor core, also called rotor lamination, is the central rotating component in electric machines that consists of thin, insulated steel sheets stacked and bonded together to form a cylindrical core. It serves as the magnetic flux carrier and mechanical support for rotor windings or permanent magnets, minimizing eddy current losses through its laminated construction while providing structural integrity under high rotational speeds and electromagnetic forces.
诱因 → 失效模式 → 工程缓解
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Laminations reduce eddy current losses by insulating thin steel sheets, improving efficiency and reducing heating in AC machines.
Non-oriented silicon steel is standard due to its high magnetic permeability and low core loss, with thicknesses typically 0.35mm or 0.5mm.
Sheets are stamped, coated, stacked precisely, and bonded using adhesives, welding, or interlocking features, then machined to final dimensions.
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