High-strength, low-iron-loss non-oriented electrical steel plate and manufacturing method thereof.
A chemically optimized non-oriented electrical steel plate with controlled manufacturing processes achieves high strength and low iron loss, addressing the limitations of existing technologies by ensuring yield strength, tensile strength, and magnetic induction requirements.
Patent Information
- Application Number
- BR112025017527
- Authority / Receiving Office
- BR · BR
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2023-03-16
- Filing Date
- 2024-03-06
- Publication Date
- 2026-07-07
AI Technical Summary
Existing non-oriented electrical steel plates face challenges in achieving high strength and low iron loss, particularly in components like high-speed electric tools and new energy vehicle drive motors, where the iron loss remains insufficiently low despite advancements in yield strength.
A non-oriented electrical steel plate with a specific chemical composition (C: 0 < C < 0.0035%; Si: 2.00-3.80%; Mn: 0.05-1.00%; Al: 0.10-1.20%; Cu: 0.05-2.00%; optionally Sn and Sb: 0.005-0.200%; Ca, Mg, and REM: 0.0003-0.0035%) and a manufacturing process involving controlled heating rates (940-1030 °C/min) and leveling reduction rates (0.5-8.0%) to optimize strength and reduce iron loss.
The solution results in a steel plate with yield strength >500 MPa, tensile strength >600 MPa, and iron loss P10/400 < 12.0 W/kg, maintaining magnetic induction B50 > 1.62 T, thereby enhancing both mechanical and electromagnetic properties.
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