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As a specialized manufacturer based in Taiyuan, Shanxi, Shanxi Jurun Technology Co., Ltd. delivers precision-engineered pure iron strips specifically designed for critical relay applications. Our cold rolled pure iron strips undergo meticulous shearing processes to ensure dimensional accuracy essential for reliable electromagnetic performance in sensitive components. Engineered for optimal magnetic permeability and minimal hysteresis loss, these strips form the foundational material for high-performance relays requiring consistent operational characteristics.
Manufactured under controlled conditions, our pure iron strips provide the magnetic homogeneity necessary for predictable relay behavior across diverse operating environments. The precision shearing technique guarantees edge integrity, eliminating micro-burrs that could compromise assembly efficiency or long-term reliability. With a focus on material purity exceeding 99.5%, we eliminate impurities that disrupt magnetic flux paths – a critical factor in achieving precise contact timing and reduced contact bounce in relay systems.
Key Technical Specifications:
- Material Composition: >99.5% pure iron with controlled residual elements
- Magnetic Properties: High saturation induction (approx. 2.15T) with low coercive force
- Surface Characteristics: Uniform oxide-free surface with Ra ≤ 0.4μm
- Edge Quality: Sheared edge straightness tolerance within 0.2mm/m
- Form Availability: Continuous coils or pre-cut blanks per customer requirements
| Thickness (mm) | Standard Width (mm) | Tensile Strength (MPa) | Hardness (HV) |
| 0.05 - 0.15 | 5 - 100 | 180 - 240 | 45 - 65 |
| 0.15 - 0.50 | 10 - 200 | 200 - 280 | 50 - 75 |
| 0.50 - 2.00 | 20 - 300 | 220 - 320 | 55 - 85 |
The cold rolling process enhances material density while maintaining the crystalline structure necessary for efficient magnetic domain movement. This results in:
- Reduced core losses compared to hot-rolled alternatives
- Improved dimensional stability during stamping operations
- Consistent magnetic characteristics across production batches
- Enhanced formability for complex relay component geometries
For relay manufacturers, these material properties translate directly into performance benefits:
- Increased contact response speed through optimized magnetic circuit efficiency
- Extended contact life by minimizing magnetic remanence effects
- Reduced audible noise during operation due to controlled magnetostriction
- Improved temperature stability across -40°C to +150°C operating range
FAQ Section:
Q: Can you provide custom widths beyond standard dimensions?
A: Absolutely. Our shearing equipment accommodates widths from 2mm to 500mm with tight tolerance control (±0.1mm) for specialized relay designs.
Q: How does purity level affect relay performance?
A: Higher purity (99.5%+) minimizes carbon/sulfur content that creates magnetic aging effects, ensuring consistent pull-in voltage characteristics throughout the product lifecycle.
Q: Do you offer protective coating options?
A: Anti-rust treatments including oiling or temporary protective films can be applied to prevent oxidation during storage and transit.
Q: What packaging standards do you follow?
A: We use VCI paper and moisture barrier wrapping with wooden pallet reinforcement to prevent deformation and corrosion during shipment.
Q: Can you supply pre-annealed material?
A: Stress-relief annealing is available upon request to optimize magnetic properties for specific relay operating parameters.
Q: What quality documentation accompanies shipments?
A: Mill test certificates including chemical analysis, mechanical properties, and dimensional verification reports are provided with each batch.
Leveraging our manufacturing expertise in Shanxi, we maintain rigorous quality protocols from raw material selection through final inspection. Our production facility implements statistical process control on critical parameters including thickness uniformity (±1% tolerance), flatness (
For relay manufacturers seeking to improve product reliability while controlling material costs, our pure iron strips deliver an optimal balance of magnetic performance and manufacturability. Contact Shanxi Jurun Technology today to discuss how our tailored material solutions can enhance your relay design capabilities and production efficiency.
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