Amorphous transformers are new energy-saving transformers using amorphous alloy material as the core. Compared with traditional silicon steel transformers, no-load loss can be reduced by 60%-80%, making them an ideal choice for energy-saving renovation and green power grid construction. As the winding material for amorphous transformers, aluminum foil selection needs to meet the special structural requirements of amorphous cores while considering conductivity performance and cost-effectiveness.
I. Technical Characteristics of Amorphous Transformers and Aluminum Foil Requirements
1.1 Amorphous Alloy Material Properties
Amorphous alloy is a material formed by rapidly cooling molten metal directly into amorphous structure. Properties include:
- High magnetic permeability: Excellent magnetization characteristics
- Low loss: Iron loss is only 1/5-1/3 of silicon steel
- High hardness: Hard and brittle, special requirements for winding design
- Thin strip structure: Amorphous strip thickness only 0.025-0.05mm
1.2 Operating Characteristics
- Ultra-low no-load loss: Suitable for long-term light-load or no-load operation
- Temperature sensitive: No-load loss positively correlated with temperature
- Low noise: Magnetostriction effect smaller than silicon steel
- Fire safety: Oil-free design, excellent fire performance
1.3 Core Selection Considerations
| Technical Points | Requirements |
|---|---|
| Thickness Accuracy | Tolerance within ±3% |
| Conductivity | IACS≥34% |
| Processability | Good ductility |
| Cost Effectiveness | Significant advantage over copper |
| Compatibility | Matched with amorphous core structure |
II. Technical Specifications
2.1 Recommended Grades
| Grade | Purity | Conductivity | Tensile Strength | Elongation | Application |
|---|---|---|---|---|---|
| 1060 | ≥99.60% | ≥35% IACS | 70-110 MPa | ≥15% | Standard Amorphous |
| 1070 | ≥99.70% | ≥36% IACS | 65-100 MPa | ≥20% | High-Performance |
| 3003 | Al-Mn alloy | ≥30% IACS | 130-180 MPa | ≥8% | High Strength |
2.2 Key Performance Parameters
Electrical: Conductivity ≥34 MS/m (IACS≥35%), Resistivity ≤0.0295 Ω·mm²/m
Dimensions: Thickness 0.3-3.0mm, Tolerance ±0.02mm, Width 20-600mm
Mechanical: Tensile strength 65-180 MPa, Elongation ≥8-25%, Hardness 25-65 HV
III. Amorphous Transformer Process and Aluminum Foil Matching
3.1 Winding Characteristics
- Rectangular cross-section: Amorphous core is rectangular, windings must adapt
- Compact design: Limited core window height, compact winding design
- Oil-immersed or dry-type: Choose insulation method based on application
3.2 Temper Selection
| Winding Type | Temper | Elongation |
|---|---|---|
| Foil Winding | O | ≥20% |
| Layer Winding | O/H22 | ≥15% |
| High Voltage | H24/H26 | ≥12% |
3.3 Winding Parameters
Winding tension: 5-15 N/mm². Winding speed: 20-50 m/min. Annealing temperature: 300-500°C.
IV. Industry Standards and Certifications
Standards: IEC 60325, GB/T 8544, JIS H4160, ASTM B373, GB/T 19443
Certifications: ISO 9001, UL, RoHS/REACH, SGS
V. Quality Inspection
5.1 Inspection Items
| Inspection | Method | Standard |
|---|---|---|
| Chemical Composition | Spectroscopy | Grade requirements met |
| Thickness Tolerance | Precision Gauge | ±0.02mm |
| Surface Quality | Visual | No defects |
| Conductivity | Eddy Current | IACS≥34% |
5.2 Special Requirements
| Item | Requirement |
|---|---|
| Thickness Uniformity | Variation ≤0.02mm |
| Edge Quality | No burrs or cracks |
| Surface Cleanliness | No oil or contaminants |
VI. Supplier Selection Recommendations
- Full-process production line (melting → rolling → annealing → slitting)
- Thickness control accuracy: ±0.02mm
- Width range: 20-600mm in stock
- Complete testing capabilities
- ISO 9001/14001/45001 certified
VII. Product Specifications
| Grade | Thickness | Width | Temper | Conductivity |
|---|---|---|---|---|
| 1060 | 0.3-3.0mm | 20-600mm | O/H22/H24 | ≥35% IACS |
| 1070 | 0.3-3.0mm | 20-600mm | O/H22/H24 | ≥36% IACS |
| 3003 | 0.5-2.5mm | 20-400mm | H24/H26 | ≥30% IACS |
Conclusion
The selection of aluminum foil for amorphous transformers requires focus on compatibility with amorphous core structure, thickness uniformity, and cost-effectiveness.
Our company has 30 years of experience exporting electrical wire and metal foil. We provide 1060/1070/3003 series aluminum foil for amorphous transformers with customized sizes and global sample shipping.
Contact:
Email: office@cnlpzz.com
WhatsApp: 0086-19337889070
The technical parameters described are general reference values. Please consult our technical team for specific selections based on your amorphous transformer design requirements.