Pure Iron Core For AC Relay
Products Description
The Pure Iron Core For AC Relay is a soft magnetic conductive component used in AC relay magnetic circuits, electromagnetic actuators, contactors, and industrial switching systems. The core functions as the magnetic flux transmission path inside the relay coil assembly and directly affects pull-in response, magnetic efficiency, release stability, and switching consistency.
Unlike general electromagnetic iron components, the AC relay iron core must maintain stable magnetic properties under repeated alternating current excitation. The material composition, core geometry, and surface precision all influence relay operating behaviour.
Technical Specifications
| Item | Specification |
| Product Name | Pure Iron Core for AC Relay |
| Material Grade | DT4 / DT4C Electric Pure Iron |
| Product Type | Relay Iron Core |
| Manufacturing Process | Cold Heading + Grinding + Annealing |
| Diameter Range | Customized |
| Length Range | Customized |
| Diameter Tolerance | ±0.01 mm – ±0.03 mm |
| Surface Roughness | Ra 0.8 – 1.6 |
| Surface Treatment | Nickel Plating / Anti-Rust Treatment |
| Magnetic Property | High Permeability / Low Remanence |
| Application | AC Relay Magnetic Systems |
| Inspection Method | Magnetic Testing + Dimensional Inspection |
| Production Type | OEM Customised Manufacturing |
Manufacturing Advantages
Cold Heading Forming
The relay iron core is manufactured using cold heading processes suitable for high-volume precision production.
Compared with traditional machining, cold heading improves:
Material utilization
Dimensional consistency
Surface compactness
Production efficiency
Cold heading also reduces material fibre interruption, which helps maintain structural stability during relay assembly.
Precision Grinding Process
After forming, the core undergoes cylindrical grinding and end-face processing to achieve stable relay installation dimensions.
Critical controlled dimensions include:
Core diameter tolerance
Concentricity
Surface roughness
End-face flatness
The dimensional accuracy directly affects coil fit and magnetic gap performance.
Magnetic Annealing Treatment
Stress-relief annealing is applied after forming to restore magnetic properties affected by cold deformation.
The annealing process helps improve:
Magnetic permeability
Magnetic response stability
Demagnetization performance
Relay release consistency
H3: Surface Treatment
Core Value We Create for You
Automotive Relay Systems
Applied in automotive relay magnetic systems requiring stable operation under:
Vibration
Temperature cycling
Continuous switching conditions
Achieving Green Value through Energy Saving and Noise Reduction
Helping your end customers reduce equipment energy consumption, improve the working environment, and align with the sustainable development trends of modern industry.
Reducing System Failure Risk and Maintenance Costs
High stability and long lifespan reduce the frequency and cost of equipment downtime and maintenance, improving the overall availability of the end system.
Empowering Product Innovation and Differentiation
Superior Soft Magnetic Iron Cores for Relays component performance allows you to design more compact, reliable, and powerful relay products, giving you a competitive edge in the market.
FAQ
Why is DT4C pure iron used for AC relay cores?
DT4C electric pure iron provides high magnetic permeability and low coercivity, making it suitable for rapid magnetisation and demagnetisation during relay switching cycles.
What manufacturing process is used for the relay core?
The relay core is typically produced through cold heading, precision grinding, annealing, and surface treatment processes.
Can the relay iron core dimensions be customised?
Yes. Diameter, length, groove structure, end-face geometry, and surface treatment can all be customised according to relay magnetic circuit requirements.
What affects AC relay magnetic performance?
Key factors include:
Material purity
Air-gap consistency
Surface precision
Core geometry
Magnetic annealing quality
Magnetic path design
These factors directly influence relay pull-in force, release speed, and switching stability.
contact us
Hot Tags: pure iron core for ac relay, China pure iron core for ac relay manufacturers, suppliers, factory, Electrician Pure Iron Core, Relay Pin, Soft Magnetic Iron Cores For Relays, relay iron core, Relay Core Cold Heading, DT4C Relay Iron Core Cold Forging
You Might Also Like
Send Inquiry