Silver Cadmium Oxide Contact
Products Description
Silver Cadmium Oxide Contact is an electrical contact material with a high-purity silver (Ag) matrix and cadmium oxide (CdO) as the reinforcing phase.
Through specific internal microstructure control, it achieves excellent arc corrosion resistance, weld adhesion resistance, and stable electrical properties, making it a key component in electrical contacts widely used in low-voltage electrical appliances, relays, contactors, air switches, and electromagnetic switches.
In electrical control systems, the performance of the contacts directly determines the lifespan, safety, and reliability of the entire system.
With its stable arc dispersion capability, excellent weld resistance, and long service life, Solid Silver Contact Rivets has become one of the classic contact materials specified by many international brands.
Manufacturing & Process Excellence
1. Powder Metallurgy Process: Utilizing advanced powder metallurgy techniques, high-purity silver powder and precisely controlled cadmium oxide powder are uniformly combined through mixing, pressing, sintering, and extrusion.
The entire process is conducted under strict temperature and atmosphere control to ensure a dense microstructure, low porosity, and uniform composition.
2. Extrusion and Heat Treatment Process: Through multiple hot extrusions and cold working processes, grain refinement is achieved, interfacial bonding is enhanced, and the material's mechanical strength and electrical conductivity consistency are improved.
3. Precision Blanking and Riveting Forming: Contact blanks are blanked using high-precision dies and then automatically riveted to ensure dimensional consistency and reliable assembly.
Suitable for various types of silver contacts, including rivet contacts, weld contacts, composite contacts, and strip contacts.
4. Rigorous Quality Inspection System
Each batch of products undergoes:
Resistivity and conductivity testing
Microstructure analysis
Anti-welding performance testing
Arc durability and mechanical life testing
To ensure that Silver Alloy Point Contacts meet international standards and customer customization requirements before leaving the factory.
Design & Technical Highlights
Customizable Structures
Single-layer Solid Ag Contacts (monometallic structure)
Composite riveted contacts (AgCdO + copper base)
Bimetallic laminated contacts (for high-load switches)
Structures can be customized according to current density, load type, and mounting method.
Optimized Interface Bonding Technology
Diffusion welding or thermal riveting is used to improve the thermal conductivity of the contact and base, reducing the thermal resistance at the contact interface.
Highly Consistent Batch Control
Strict control of powder particle size distribution, mixing time, and sintering temperature ensures batch stability of material properties.
Surface Finishing Available for Applications
Including polishing, electrolytic cleaning, and micro-oxide film protection to improve corrosion resistance and appearance consistency.
Main Functions and Application Value
Main Functions
Efficient control of current conduction and disconnection;
Withstands instantaneous arc impact and suppresses welding.
Maintains low temperature rise and low resistance under high-frequency operation;
Provides stable mechanical elasticity and conductivity.
Typical Application Areas
Low-voltage electrical appliances: air switches, circuit breakers, contactors
Home appliance control: relays, thermostats
Power systems: distribution control cabinets, protection devices
New energy equipment: energy storage inverters, charging piles, battery management modules
Industrial automation control systems: PLCs, electromechanical control units
Extended Industry Applications
With the development of new energy and smart grids, Monometal Contact Rivets have been widely used in new energy storage equipment, electric vehicle charging units, and high-performance control components.
Their stable electrical characteristics make them an ideal choice that balances cost-effectiveness and performance reliability.
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