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Help CenterElectrical Steel Cold Rolled Sheet 1.0mm Tolerance ±0.02mm for Motor Laminations
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Shanxi Jurun Technology Co., Ltd., based in Taiyuan's industrial heartland, specializes in manufacturing precision electrical steel sheets engineered for high-performance motor applications. Our cold rolled electrical steel delivers exceptional magnetic properties with ultra-tight thickness control, directly impacting motor efficiency and energy savings. With ±0.02mm tolerance consistency, this 1.0mm grade enables manufacturers to achieve superior lamination stacking factors while minimizing core losses.
Technical Advantages & Specifications:
- Precision thickness uniformity reduces eddy current losses by up to 15% compared to standard tolerance sheets
- Optimized grain-oriented structure ensures consistent magnetic flux distribution
- Surface oxide coating provides superior insulation resistance (>100Ω·cm²)
- Annealing process eliminates internal stresses for improved punchability
| Property | Value | Testing Standard |
|---|---|---|
| Thickness Tolerance | ±0.02mm | ASTM A34 |
| Surface Roughness (Ra) | ≤0.5μm | ISO 4287 |
| Density | 7.65 g/cm³ | ISO 1183 |
| Resistivity | 47 μΩ·cm | IEC 60404 |
The cold rolling process creates a uniform crystalline structure that enhances magnetic domain alignment, directly contributing to reduced hysteresis losses in high-speed motors. When used in stator and rotor laminations, the material's consistent thickness allows for tighter stacking tolerances, increasing slot fill factors by approximately 8-12%. This translates to tangible benefits including lower operating temperatures, extended motor lifespan, and reduced audible noise emissions.
Processing & Customization:
- Available in coil or sheet form with protective PVC coating
- Custom width slitting (600mm to 1250mm range)
- Optional stress relief annealing upon request
- Compatible with all standard stamping and laser cutting processes
Backed by Shanxi Jurun Technology's metallurgical expertise in China's steel manufacturing hub, this electrical steel undergoes rigorous quality verification including:
- Eddy current testing for thickness uniformity
- Epstein frame magnetic property validation
- Surface contamination analysis
Our Taiyuan-based production facility maintains strict process controls that ensure batch-to-batch consistency, making this material ideal for high-volume EV motor production, industrial servo motors, and precision instrumentation applications. Contact our technical team for material certification data and custom dimension solutions.
Frequently Asked Questions:
-
Q: What is the minimum order quantity?
A: Standard MOQ is 5 tons, with sample rolls available for testing. -
Q: Can this material be used for high-frequency applications?
A: Yes, the low core loss characteristics make it suitable for motors operating at 400-1000Hz. -
Q: How does thickness tolerance affect motor performance?
A: ±0.02mm tolerance ensures uniform magnetic circuits, reducing vibration and improving efficiency. -
Q: Is anti-rust treatment included?
A: All material features protective oxide coating; optional VCI packaging available. -
Q: What packaging options do you offer?
A: Standard wooden pallets with steel strapping or custom coil cradles. -
Q: Can you provide material certification?
A: Mill test certificates including chemical composition and magnetic properties accompany each shipment. -
Q: What's the lead time for custom widths?
A: Standard slitting requires 10-15 days after order confirmation. -
Q: Do you offer technical support for lamination design?
A: Our engineering team provides application guidance for optimal stacking configurations.
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