Products Description

The Iron Core for Relay undertakes the key function of gathering and guiding magnetic flux in the electromagnetic loop. Working together with coils, relay yokes and armatures, this component builds up a complete closed magnetic path. Its magnetic characteristics directly govern the relay's pull-in and dropout voltage, switching response speed, as well as thermal stability during continuous operation.

The Cold Forging Relay Core is mainly used in new energy DC contactors, rail transit signal relays, power system protection relays, and electric vehicle high-voltage pre-charge relays. Based on the stringent requirements for magnetic performance consistency and long-term reliability in these target applications, this product adheres to high-level engineering standards in material selection, dimensional accuracy control, and surface treatment processes.

Material Advantages

Compared to ordinary low-carbon steel, DT4C pure iron reduces hysteresis loss by over 70%. Pure Iron Core for Railway Signalling Relays generates less heat during long-term continuous operation, resulting in lower relay temperature rise.

Original factory billets have a dense metallographic structure, free of pores and inclusions. Each bar comes with a steel mill's material certificate, allowing for full traceability and eliminating performance fluctuations in the Electromagnet Core caused by recycled waste.

The material has excellent ductility, preventing cracking during cold heading. The stepped structure of the Soft Magnetic Iron Relay Core is formed in one piece, reducing stress damage from secondary processing.

Pure Iron Material for Iron Core for Relay

Product Features and Functions

Core Magnetic Conducting Function

The Electromagnetic Relay Core serves as the main magnetic path for the electromagnetic relay. When energised, it rapidly establishes a magnetic field, pulling the armature to close the contacts; after de-energisation, it quickly demagnetises, eliminating residual magnetic force and ensuring reliable contact disconnection.

Structural Positioning Function

The stepped shaft structure precisely fits into the coil frame, ensuring coaxiality between the Soft Magnetic Iron Rod and the armature, thereby preventing insufficient attraction due to magnetic field misalignment and facilitating adaptation to automated pressing processes.

Operating Condition Compatibility Function

The Relay Magnetic Iron Core optimises the end-face structure for new energy vehicle relays, improving magnetic field conduction efficiency under high current conditions, reducing relay pull-in power consumption, and extending the service life of vehicle electronic control components.

Size Compatibility Function

It can be processed into various shapes, such as straight rod type and stepped shaft type, corresponding to different housings of conventional power relays, high-voltage DC relays, and signal relays, allowing for switching between multiple models without the need for new moulds.

Function of Iron Core for Relay

Frequently Asked Questions

Can you customise the Pure Iron Rod for Relay structure based on the customer's magnetic circuit simulation drawings?

Yes. Please provide 2D/3D drawings, material specifications, surface treatment, and magnetic performance requirements. We will assist with cold heading feasibility analysis and mould quotation. D-shaped heads, multi-step structures, and eccentric structures can all be achieved through cold heading solutions.

Can the Relay Steel Core be used in DC relays?

Yes, the DT4C is compatible with both AC and DC operating conditions. For DC models, only minor adjustments to the annealing and holding time are needed to control the residual magnetism at a lower level, meeting the requirements for rapid release in DC relays.

Why does the Relay Core material affect the relay's closing performance?

The permeability, coercivity, and residual magnetism level of the iron core affect the magnetic circuit efficiency, thus affecting the closing force, operating time, and release performance. Therefore, material selection needs to be comprehensively evaluated in conjunction with the system design.

Can you provide other relay metal components?

Yes, we can provide a variety of supporting products such as Relay Pin Cores, armatures, contacts, terminals, stamped parts, and welded assemblies, facilitating system-level procurement and integration.

We Can Produce the Metal Parts Needed for Relays like Iron Core for Relay

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If you are evaluating relay magnetic circuit designs, verifying the long-term reliability of Iron Core for Relay under extreme operating conditions, or seeking a vertically integrated supply solution to reduce the risks of managing multiple suppliers, please send your technical specifications or drawings to our engineering team.