Cold-Rolled Grain-Oriented Silicon Steel (CRGO): Precision Solutions for High-Efficiency Transformers.
CRGO Steel Overview: Optimized Magnetic Anisotropy for Energy Savings.
Specially engineered with Goss texture {110}<001> alignment, our grain-oriented silicon steel minimizes core losses in transformers and generators. Grades like B27R095 achieve iron losses as low as 0.95 W/kg @1.7T/50Hz, enhancing energy efficiency by up to 99% in power distribution systems.
Key Advantages:
- Ultra-Low Hysteresis: 30% reduction vs. non-oriented steel
- Directional Permeability: B800 induction ≥1.85 Tesla (magnetic flux aligned to rolling direction)
- Surface Uniformity: Ra ≤0.5μm roughness (ISO 13565-2 compliant)
Technical Specifications & Compliance
Premium Grades & Standards
| Grade | Thickness | Core Loss (W/kg) | Min. Induction (B800) | Coating |
|---|---|---|---|---|
| B23R080 | 0.23mm | ≤0.80 @1.7T/50Hz | ≥1.88T | 4–6μm C6 (≥25 Ω·cm²) |
| B27R095 | 0.27mm | ≤0.95 @1.7T/50Hz | ≥1.83T | 3–5μm C5 (≥20 Ω·cm²) |
| B35G155 | 0.35mm | ≤1.55 @1.5T/50Hz | ≥1.78T | 2–4μm C4 (≥15 Ω·cm²) |
Material Properties:
- Silicon Content: 2.9–3.3%
- Carbon Content: ≤0.003% post-annealing
- Dimensional Tolerance: ±0.02mm (thickness), ±0.1mm (width)
Applications Across Power Systems
- Energy Infrastructure:
- 500kVA–250MVA Transformers: B23R080 reduces no-load losses by 18%
- Smart Grid Reactors: 0.27mm B27R095 for 1.83T induction
- Consumer Electronics:
- High-Frequency Micro-Motors: 0.23mm ultra-thin CRGO for ≤0.85W/kg loss
- Renewable Energy:
- Wind Turbine Generators: 0.35mm B35G155 withstands 1.78T under load
Manufacturing & Quality Control
- Hot Rolling: Slabs reheated to 1,150°C and rolled to 2.5mm.
- Cold Rolling: Final gauge achieved via 90–93% reduction.
- Decarburization: Annealed at 830°C in H₂/N₂ atmosphere (carbon ≤0.003%).
- Laser Scribing: Domain refinement reduces hysteresis loss by 15–20%.
Quality Assurance:
- Epstein Testing: IEC 60404-2 validated core losses
- Coating Adhesion: Cross-cut test per ISO 2409 (Grade 0)
- Flatness: ≤0.1mm/m deviation (ASTM A1037)
Competitive Edge
| Parameter | Our CRGO | Industry Average |
|---|---|---|
| Core Loss | 0.80–1.55 W/kg | 1.00–1.80 W/kg |
| Lead Time | 15–25 days | 30–45 days |
| Width Range | 20–1,250mm (±0.1mm) | Limited to 1,000mm |
Why Choose Us?
- Free Samples: ≤10 kg with technical datasheets
- Custom Slitting: Tolerances ±0.05mm for precision laminations
- Global Certifications: ISO 9001, ASTM A876, EN 10107
Packing And Delivery
