Straight Coil Core
Products Description
Designed specifically for electromagnetic relay magnetic loop systems, this Straight Coil Core employs a cold forging and deep-drawing integrated forming technique. It is structurally compatible with magnetic circuits commonly found in EV relays, power meter latching relays, and industrial electromagnetic contactors. With a DT4C pure iron base material serving as the central magnetic path, the component ensures accurate alignment with the coil's field conduction demands. This design intrinsically suppresses air-gap reluctance losses, thereby stabilizing the transient electromagnetic behavior during relay actuation and release from a material-rooted perspective.
Product Details and Features
End Positioning Shaft Design
Strict coaxiality tolerance control ensures positioning accuracy during assembly, avoiding performance fluctuations caused by magnetic circuit eccentricity. It perfectly matches the stringent requirements of the Latching Relay Iron Core for magnetic circuit alignment accuracy, ensuring the stability of the latching relay's engagement and release.
Side-grooving process adaptation
Grooving size and position can be customized according to customer relay structure design requirements to meet positioning and fixing needs, providing a flexible customization solution for the structural adaptation of the Core for Latching Relay, and compatible with relay bracket assembly designs from different manufacturers.
Strict straight rod cylindricity tolerance
Ensuring consistent coil winding tightness and avoiding reliability risks caused by winding looseness is the technological foundation for Pure Iron Core for Electric Meter Relay to meet metering-grade accuracy requirements, ensuring the structural and performance stability of the meter relay during long-term operation.
DT4C Industrial Electrical Pure Iron Material Performance
DT4C Iron Core for Latching Relay exhibits stable magnetic properties with a narrow fluctuation range in maximum permeability, low coercivity, and controllable remanence. It can achieve rapid magnetization even in weak magnetic field environments, significantly reducing relay coil drive power consumption. The substrate has a high saturation magnetic induction intensity, making it less prone to magnetic saturation under continuous high-current conditions, suitable for automotive high-voltage relays and industrial high-power electromagnetic switch magnetic circuit design requirements.
As a standardized Coil Core for Electromagnetic Relay, the base material boasts excellent ductility, making it suitable for cold forging and deep drawing, as well as integral molding processes. After molding, the internal structure is dense and non-porous. The material's yield strength is balanced and stable, ensuring that the core does not easily deform under long-term vibration and alternating high and low temperature conditions, maintaining constant magnetic circuit dimensions.
The Electric Vehicle Relay Core's base material exhibits a uniform metallographic distribution. Combined with a chromium-free passivation anti-rust composite treatment, it demonstrates outstanding resistance to salt spray and damp heat corrosion. The corrosion rate of the metal body is significantly lower than that of conventional low-carbon steel cores on the market, making it suitable for long-term use in humid and variable outdoor and automotive environments.
Frequently Asked Questions
Is it suitable for pulse-driven magnetic latching relays?
Yes. DT4C material has low coercivity and short magnetic aging. When used as a Core for Latching Relay, the residual magnetism after pulse excitation is stable, providing a reliable holding force. The annealing process optimizes the rectangularity ratio of the hysteresis loop, adapting to the flux switching requirements of dual-pulse drive modes.
Can your company customize iron cores with stepped, flat, or threaded structures according to our drawings?
Yes. Our company has combined cold heading and turning capabilities and can undertake customized requirements for various irregularly shaped Electromagnetic Relay Cores, including features such as steps, annular grooves, flat shapes, and transverse holes. Specific solutions require evaluation of the forming process based on the drawings.
How should the surface treatment of the core be selected? Does it affect the magnetic properties?
For normal indoor environments, environmentally friendly zinc plating can be used; for high humidity or salt spray environments, nickel plating is recommended. Electroplating itself does not change the intrinsic magnetic properties of the Electromagnetic Relay Core, but attention must be paid to controlling the pre-plating pickling and activation time to avoid excessive corrosion and the formation of a porous surface layer. Our plating process has been verified through salt spray testing.
contact us
For magnetic circuit simulation analysis or sample testing support for your specific relay model's Straight Coil Core, please contact our engineering application team. We will provide selection advice and failure boundary analysis reports based on measured data.
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