Composite Rivet Contact Details

Composite riveted contacts are key conductive components widely used in low-voltage electrical appliances, relays, thermostats, automatic switches, and industrial control equipment. Their structure typically consists of a silver-based contact layer combined with a copper-based material, balancing conductivity, arc resistance, mechanical strength, and processing stability. In modern electrical systems, composite contact rivets for relays are widely used in high-frequency switching and long-life electrical contact applications, especially suitable for switching systems with high requirements for contact resistance and weldability.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Pure silver contacts (Ag) possess extremely high conductivity and thermal conductivity, along with excellent ductility, plasticity, and arc corrosion resistance. They have low contact resistance and are easy to process and weld, thus serving long as an important contact material for low-voltage, low-current electrical appliances. Pure silver contacts are suitable for continuously closed electrical connection structures and are widely used in thermostats, automatic switches, time relays, and precision electronic devices. Because silver maintains stable conductivity during energization, it is also one of the common base materials for electrical contact points for switches.

 

Silver-copper composite contacts (AgCu) are composite conductive materials formed by adding a certain proportion of copper to silver-based materials. The addition of copper significantly improves the material's resistance to burn-off and reduces material migration under DC operating conditions. In low-to-medium voltage current environments below 16A, Silver Copper Composite Rivet Contacts combine good conductivity and mechanical strength, making them widely used in AC contactors, push-button switches, power tools, and home appliance control systems. Meanwhile, the Bimetal Ag/Cu Silver Contact Riveting process effectively enhances the bonding strength of the composite layer, ensuring stable performance of the contacts during long-term cyclic operation.

 

Fine-grained silver-copper composite contacts are fine-grained materials formed by adding trace amounts of nickel to pure silver. Their contact resistance is close to that of pure silver, but they offer higher resistance to welding and burn-off, along with superior temperature resistance and structural strength. This type of material is suitable for temperature control systems and automatic control equipment with low operating current but frequent operation, and is widely used in precision relays and thermostats. Due to its good stability, it is often categorized as a high-reliability switch Bimetal Silver Contact solution.

 

Silver-nickel composite contacts (AgNi/Cu) are a well-established material in the low-voltage AC switchgear field. AgNi material possesses excellent anti-welding properties, low contact resistance, and stable arc characteristics. Furthermore, it can be directly welded to contact bridge structures without additional solder, simplifying the manufacturing process and reducing costs. AgNi bi-metal electrical silver contacts are widely used in relays, auxiliary contactors, washing machine timers, automotive electrical switches, and industrial control devices. With the increasing demands for lifespan and stability in automated equipment, the demand for Silver Bimetal Rivet Contacts in low-voltage control systems continues to grow.

 

Silver cadmium oxide contacts (AgCdO) are an important type of traditional silver metal oxide contact material. Their key feature is the uniform distribution of cadmium oxide particles within the silver matrix. Under high-temperature arc conditions, this effectively reduces arc energy and enhances arc extinguishing capability, resulting in excellent anti-welding and burn-off resistance. Silver cadmium electrical contacts have long been widely used in high-load switching devices such as low-voltage contactors, circuit breakers, and relays. Silver cadmium oxide (AgSnO2) electrical contacts maintain stable electrical performance under frequent switching conditions, while Agcdo bimetal silver rivet contacts balance conductivity with machining efficiency, making them highly valuable in traditional industrial switching systems.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

With the trend towards environmental protection and cadmium-free technologies, silver tin oxide (AgSnO2) and silver zinc oxide (AgZnO) materials are gradually becoming important alternatives. AgSnO2 material possesses excellent burn-off resistance and low material loss, exhibiting stability under high-load switching conditions. AgZnO material has high thermal stability and is suitable for high-capacity contactors and air circuit breaker systems. These materials are increasingly widely used in the manufacturing of modern contact electrical bimetal contact rivets, meeting the requirements of high-frequency, long-life, and high-reliability electrical control.

 

Composite riveted contacts are typically manufactured using processes such as cold heading, composite bonding, riveting, precision turning, and automated welding. Depending on application requirements, different pin diameters, layer thicknesses, pin lengths, and spherical radii can be designed to meet various switch structures and conductivity requirements. Customized Electrical Bi-Metal Contacts can be tailored to current load, mechanical life, and installation methods, offering high adaptability in relays, circuit breakers, and new energy control systems.

 

In terms of dimensional design, composite contacts typically employ standardized parameter control, including pin diameter, layer thickness, tolerance control, and release angle design. Proper dimensional control not only affects conductivity stability but also directly relates to contact life and assembly consistency. For high-frequency operating equipment, the surface precision and layer bonding strength of the Button Bimetal Rivet Electrical Contact are particularly critical, effectively reducing contact resistance fluctuations and improving equipment operational reliability.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Currently, with the development of smart appliances, new energy systems, and industrial automation, Bimetal Electric Rivet Contacts are continuously upgrading towards longer lifespan, lower contact resistance, environmentally friendly cadmium-free technology, and precision miniaturization.

 

Meanwhile, Bimetal Silver Electrical Rivet and Bimetal Silver Rivet Contacts for Electric Power are also finding increasingly widespread applications in new energy vehicle relays, energy storage systems, power control modules, and intelligent power distribution equipment.