Products Description
The Soft Magnetic Iron Relay Core is not merely a standard machined iron component; rather, it is a functional soft magnetic part manufactured from high-purity electrolytic iron (such as DT4C) through a process involving precision stamping, CNC turning, and specialized magnetic-circuit annealing. Its fundamental characteristics are "high magnetic permeability, low coercivity, and low hysteresis loss." Unlike general steel components, this product ensures that magnetic domain walls can move effortlessly even under weak excitation-achieved by strictly controlling the content of impurities such as carbon, sulfur, and oxygen, as well as the final annealing atmosphere. This capability provides the relay with a rapid pull-in response and extremely low residual magnetism, serving as the physical foundation for enhancing both the electrical service life and operational consistency of the relay.
Key Functions
Efficient Electromagnetic Energy Conversion
Serving as both the air-gap medium and the primary flux path within the relay's magnetic circuit, Straight Coil Core efficiently converts the weak magnetomotive force generated by the coil into mechanical displacement work (i.e., armature actuation).
Lag-free Transmission of Control Signals
Leveraging its low coercivity characteristics, Cold Heading Pure Iron Core precisely replicates the "on/off" logic of the coil current, ensuring zero phase delay between the control signal and the contact actuation.
Precise Definition of the Magnetic Circuit Air Gap
By establishing a minute air gap in conjunction with the armature (typically 0.1–0.3 mm), Relay Core sets the relay's operational threshold voltage/current, thereby ensuring consistent sensitivity across the entire device.
Manufacturing Process
Tooling Advantages
Molds are manufactured using YG15 tungsten carbide material, achieving a hardness of HRA90. Cavity precision is controlled within ±0.005mm, and mold life exceeds 1 million cycles. This ensures stable dimensional accuracy during mass production of Relay core nickel plating with copper undercoat while minimizing mold replacement costs and production interruptions.
Automated Production Advantages
Equipped with fully automated precision stamping, grinding, and heat treatment production lines, our facility boasts a 100% automation rate for critical processes. This reduces human error, enhances Relay core cold heading consistency, and shortens the production cycle per unit, thereby meeting engineering procurement demands for high-volume orders and rapid delivery.
Process Control Advantages
We have established a comprehensive, end-to-end process control system-spanning from raw material selection to finished product shipment. Specific inspection checkpoints are implemented at every stage to ensure that critical parameters-such as heat treatment temperatures, dimensional accuracy, and surface quality-meet all standards, guaranteeing zero outflow of non-conforming Coil Core for Electromagnetic relay.
Detailed Features
| Surface Details | The surface undergoes precision grinding and passivation treatment, achieving a roughness of Ra ≤ 0.8 μm. It is free of burrs, scratches, and oxidation spots, exhibiting uniform coloration. The contact surfaces are flat and smooth, ensuring Relay core nickel plating with copper undercoat tight fit with the relay armature and coil to enhance magnetic conduction efficiency. |
| Dimensional Details | Key dimensions of Coil Core for Electromagnetic relay maintain a CPK value of ≥ 1.67, with precise and controllable tolerances. Corners are rounded and burr-free, and the overall structure is uniform. It fits perfectly into the mounting slots of the relay bobbin, resulting in minimal assembly gaps; this eliminates the need for secondary adjustments and significantly boosts assembly efficiency. |
| Structural Details | Depending on specific relay requirements, the component can be fabricated in various configurations-such as E-type, U-type, or I-type. It features uniform wall thickness, free from deformation or cracks. The Relay Core's apertures are precisely machined with minimal positional deviation, ensuring a precise and accurate fit with the coil and armature. |
contact us
If you require Soft Magnetic Iron Relay Cores, our engineering team is ready to provide technical support and sample services. Please submit your requirements, and our senior engineers will provide a customized solution to help optimize your relay designs.
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