Grain-Oriented Silicon Steel for Electrical Transformers: High-Efficiency Core Solutions.
Ultra-Low Loss Grain-Oriented Steel (GOES) for Precision Transformers
Engineered with Goss texture {110}<001> alignment, our grain-oriented silicon steel minimizes core losses in power transformers, reactors, and high-frequency inductors. Grades like UI-50B achieve iron losses as low as 0.85 W/kg @1.7T/50Hz, enhancing energy efficiency by up to 99.5% in grid and industrial systems.
Key Advantages:
- Directional Magnetic Flux: B800 induction ≥1.85T (aligned to rolling direction)
- Thin Insulation Coating: C5/C6 coatings (3–6μm) with ≥20 Ω·cm² surface resistance
- Custom Lamination Shapes: UI, EI, and C-cores for rapid assembly
Technical Specifications & Dimensional Tolerances
UI-Series Core Geometry
| Model | A (mm) | B (mm) | C (mm) | D (mm) | Φ (mm) | Window Area (cm²) | Stack Factor |
|---|---|---|---|---|---|---|---|
| UI-30B | 90 | 150 | 30 | 30 | 8 | 27 | 95% |
| UI-50B | 150 | 250 | 50 | 50 | 8 | 75 | 96% |
| UI-100B | 300 | 500 | 100 | 100 | 14 | 300 | 97% |
Material Properties:
- Silicon Content: 3.0–3.3%
- Core Loss (P1.7/50): 0.85–1.55 W/kg
- Thickness Tolerance: ±0.02mm (0.23mm–0.35mm grades)
Performance Metrics & Industry Compliance
| Parameter | UI-30B | UI-50B | UI-100B | Standard |
|---|---|---|---|---|
| Max. Flux Density | 1.82T | 1.85T | 1.88T | IEC 60404-8 |
| Coating Adhesion | Grade 0 (ISO 2409) | Grade 0 (ISO 2409) | Grade 0 (ISO 2409) | ASTM A976 |
| Flatness Deviation | ≤0.1mm/m | ≤0.1mm/m | ≤0.15mm/m | ASTM A1037 |
Applications Across Power Infrastructure
- Grid Transformers:
- 500kVA–500MVA Units: UI-100B cores reduce no-load loss by 22% vs. conventional laminations
- Renewable Energy:
- Solar Farm Step-Up Transformers: UI-50B with 1.85T induction at 50Hz
- High-Frequency Devices:
- Switch-Mode Power Supplies: UI-30B for ≤1.0W/kg loss @10kHz
Manufacturing & Quality Control
- Hot Rolling: Slab reheated to 1,150°C, rolled to 2.3mm thickness.
- Cold Rolling: Final gauge achieved via 92–95% reduction.
- Decarburization: Annealed at 820°C (carbon ≤0.003%).
- Laser Domain Refinement: Reduces hysteresis loss by 15–25%.
Testing Protocols:
- Epstein Frame Analysis: Core loss validated per IEC 60404-2
- Bending Test: ≥2 bends (0.23mm) or ≥10 bends (0.35mm) without cracking
Competitive Edge
| Parameter | Our GOES | Industry Average |
|---|---|---|
| Core Loss | 0.85–1.55 W/kg | 1.10–1.80 W/kg |
| Lead Time | 10–20 days | 25–40 days |
| Width Options | 50–1,200mm (±0.1mm) | Limited to 1,000mm |
Why Choose Us?
- Free Prototyping: ≤5 kg samples with CAD drawings
- RoHS Compliance: Chromium-free C6 insulation coating
- Certifications: ISO 9001, ASTM A876, EN 10107
Logical Connectors:
- Comparison: While standard GOES offers ±0.03mm tolerance, our process ensures ±0.02mm.
- Example: For instance, UI-30B cuts transformer weight by 18% in compact designs.
- Cause-Effect: Laser scribing refines magnetic domains, slashing hysteresis loss by 25%.
Packing And Delivery
