Products Description
The DT4C soft magnetic iron core-used in relays-is a functional soft magnetic metal component; its primary value lies in optimizing the relay's internal magnetic circuit and enhancing electromagnetic conversion efficiency.
Unlike standard structural components, relay iron cores must not only meet dimensional specifications but also possess stable magnetic properties to ensure consistent operational performance across varying voltages, currents, and environmental conditions.
Its key functions include:
1. Magnetic Flux Conduction and Concentration
Serving as a critical path within the electromagnetic circuit, the iron core effectively reduces magnetic reluctance, concentrates the magnetic field generated by the coil, and improves magnetic energy utilization efficiency.
2. Enhancing Electromagnetic Attraction
Its excellent magnetic permeability facilitates the rapid establishment of the operating magnetic field, enabling reliable actuation of the contact system.
Technical Features: Focusing on Hysteresis Loss and Stability
| Low Hysteresis Loss | DT4C exhibits a narrow hysteresis loop, signifying minimal energy consumption during magnetization and demagnetization cycles. This not only enhances energy efficiency but, more importantly, reduces heat generation within the DT4C AC Relay Iron core itself-a critical factor for maintaining thermal stability during high-frequency relay operation. |
| Resistance to Magnetic Aging | Through specialized heat treatment processes (such as high-temperature annealing), we eliminate internal residual stresses and stabilize elements like carbon and nitrogen (either by precipitating them or locking them into a stable state). This ensures that the Electric Vehicle Relay Core's magnetic properties do not significantly degrade over time during prolonged use or storage-preventing "magnetic aging"-thereby guaranteeing consistent performance across hundreds of thousands of relay operations. |
| Favorable Frequency Characteristics | While DT4C is primarily intended for DC or power-frequency (50/60 Hz) applications, we have optimized grain size to improve its eddy current loss performance at low-to-medium frequencies, making it suitable for select AC relay applications as well. |
Detail Showcase
Appearance Quality
The Relay Magnetic Iron Core surface is smooth and free of cracks, scratches, and corrosion. The outer surface, finished via centerless grinding, exhibits a uniform metallic luster with a surface roughness of Ra ≤ 0.8 μm.
01
End Face Details
The end faces are flat, with perpendicularity to the axis precisely controlled. Edges are free of burrs and chipping, ensuring a precision fit with the armature or yoke.
02
Annealing Quality
Following vacuum annealing, the internal grain structure is uniform, and internal stresses are eliminated. Metallographic inspection confirms a grain size of Grade 6 or finer.
03
Surface Treatment Details
The coating is uniform and dense, with no peeling or blistering. Salt spray testing ensures compliance with corrosion resistance standards.
04
Identification and Traceability
Batch number identification can be provided upon customer request. Integrated with a comprehensive quality traceability system, this enables full lifecycle traceability from raw materials to the finished Electromagnetic Relay Core.
05
Application Advantages: Meeting Relay Requirements Across All Scenarios
Industrial Control Relays
In PLC output relays, auxiliary relays, and time-delay relays, the high response speed of DT4C cores ensures the precise transmission of control signals in automated production lines.
Automotive Relays and New Energy High-Voltage DC Relays
800V high-voltage platforms impose rigorous demands on core response time and vibration resistance. Our cold-forged cores utilize micro-precision forming to create thin-walled, complex shapes with wall thicknesses as low as 0.3mm, perfectly meeting the miniaturization requirements of high-voltage DC relays.
Magnetic Latching Relays
In applications such as smart meters and PV combiner boxes, magnetic latching relays require cores that magnetize rapidly under pulse excitation and retain magnetic force. The low coercivity and high saturation magnetic induction of DT4C enable reliable latching with minimal pulse energy.
Home Appliance and Consumer Electronics Relays
In control relays for appliances like air conditioners, washing machines, and refrigerators, the low iron loss characteristics of Pure Iron Rod for Relays significantly reduce coil heat generation, thereby extending the service life of both the relay and the appliance itself.
contact us
If you are developing projects involving relays, control modules, or electromagnetic components, we can provide professional DT4C Electromagnetic Iron Core manufacturing solutions tailored to your structural drawings, performance requirements, and application environments. Leveraging our proven precision machining capabilities, we help enhance both your product reliability and supply chain stability.
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