Products Description
Relay Metal Skeleton Yoke is a core magnetic conducting component of an electrical relay. By using high-purity iron material and standard stamping process, it can receive the alternating magnetic field generated by the electromagnetic coil, gather the magnetic flux direction, reduce magnetic resistance loss, and at the same time complete mechanical positioning and rigid support for the moving and static contact components, spring structure, and base. It also connects the electromagnetic drive circuit of the relay and the power on/off execution circuit, and is the basic structural component for the entire new energy distribution system to achieve safe current opening and closing, overload protection, and electrical control signal switching.
Manufacturing process
Material cutting
The high-purity iron coil is unwound and leveled, and then precisely cut according to the layout dimensions to obtain standard material sheets. The internal stress of the plates is removed to ensure the original plate's flatness.
Precision continuous stamping
Using high-precision progressive dies to complete multi-station processing of punching, bossing, and side tongue forming. The Relay Yoke Stamping relies on servo stamping equipment to control the stamping speed and pressure, as well as to manage the tolerance of sheet material deformation.
Step-by-step bending forming
The multi-station bending die bends the sheet material gradually according to the designed angle, compensates for the sheet material's rebound volume in real time, and strictly controls the tolerance of the bending angle and the shape dimension tolerance of the Sheet Metal Relay Yoke Assembly.
De-burring and cleaning process
The combination of ultrasonic gas-phase cleaning and dust-free drying procedure removes the residual metal debris and oil stains from the stamping process, avoiding the risk of internal short circuits in the relay iron yoke bracket due to impurities remaining.
Surface passivation treatment
The surface is treated with an environmentally friendly passivation solution, generating a dense anti-rust passivation layer on the Electromagnetic Relay Yoke Frame. The uniformity of the passivation film thickness is strictly controlled throughout the process.
Final inspection and sorting
The three-dimensional size detector and the rapid magnetic performance tester conduct full sample inspection. Unqualified products are separately diverted for disposal, while the qualified Precision Relay Yoke Metal Stamping Parts are packaged and stored.
Material properties, material advantages
Material basic properties
The base material of the Sheet Metal Relay Yoke is selected from industrial high-purity electrical pure iron sheet. The fixed brand materials are stored in the warehouse, and the performance parameters are fixed and traceable: the saturation magnetic induction strength value is stable, the coercive force is low, and the magnetic permeability range is fixed; the tensile strength and yield strength of the sheet metal are processed through rolling and quenching treatment, and the structural stress is uniformly released after cold stamping and bending processing; the conductive and heat-conductive properties of the base material body are balanced, which can guide the local accumulated heat generated during the operation of the relay coil and contacts.
Core material advantages
- Stable magnetic properties: The magnetic properties of the iron materials between batches have a very small fluctuation range. After batch installation of the Sheet Metal Relay Yoke, the suction voltage and release voltage parameters of the same specification relays are highly consistent, and system integrators do not need to make separate circuit parameter calibration for each relay.
- Mechanical processing compatibility: Electrical pure iron has excellent cold stamping ductility. Complex bending, punching, and protrusion forming processes will not cause sheet metal tearing or dark cracking defects, ensuring the qualified rate of production of complex structure Power Relay Yokes.
- Environmental stability: The base material body of the Precision Relay Yoke Stamping Part has stable chemical properties. Combined with the surface passivation protection process, it will not have rusting or material deterioration problems within the normal working temperature range of -40℃ to 125℃ of new energy equipment, meeting the wide temperature range working requirements of vehicle-mounted and energy storage equipment.
- Thermal conduction auxiliary effect: The metal body of the Magnetic Yoke Metal Stamping for EV Relay can assist in discharging the heat generated inside the relay, reducing the temperature rise in the contact area, slowing down the electro-corrosion rate of the contacts, and prolonging the overall service life of the relay.
Frequently Asked Questions
What material is used for the Pure Iron Stamped Relay Yoke?
The standard product is made of DT4E grade electric pure iron, which has high magnetic permeability and low coercivity properties. Other magnetic materials or carbon steel can also be selected according to customer requirements.
Does the company support customization for non-standard sizes and irregular structures?
Yes, we do. This facility independently designs molds and conducts rapid prototyping. We can develop specialized Sheet Metal Relay Yokes based on the customer's relay structure requirements.
Is it supported to supply other metal parts of relays simultaneously?
Yes. Apart from the Power Relay Yoke, the armature, spring, terminals, brackets, and other metal parts of the relays can be supplied simultaneously to achieve batch-level procurement.
contact us
If you need to confirm the compatibility details of this Relay Metal Skeleton Yoke with your existing new energy distribution system, you can directly contact our engineering team to obtain a complete working condition matching verification plan.
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