Silver Contact Riveted Copper Assemblies
Products Description
This Silver Contact Riveted Copper Assemblies is essentially a silver-copper composite conductive structure. A copper-stamped part serves as the support and conductive substrate, while silver contacts act as the direct contact interface, forming a single integrated component through mechanical riveting. This composite design fully utilises the complementary properties of the two materials: copper provides excellent thermal conductivity and structural strength, while the silver contacts handle high-frequency arcing and low contact resistance.
Key features include:
Precision riveting integration: The riveted points are firmly secured without loosening, ensuring high bonding strength and preventing detachment or poor contact during long-term use.
Low contact resistance: The silver contact surface provides an excellent conductive path, significantly reducing interface resistance and heat generation.
Arc and weld resistance: The excellent self-cleaning and corrosion-resistant properties of silver allow for adaptation to frequent switching conditions.
Core Application Scenarios and Compatibility Advantages
High-Reliability Relays
In intelligent control and automotive electronics, ensuring drift-free and non-sticking of minute signals and power currents during millions of on/off cycles.
Low-Voltage Contactors (AC/DC Contactors)
Withstanding inrush currents several times greater than those experienced during motor startup, these provide superior arc resistance under harsh, frequent inching conditions.
Electrical Wall Switches
Achieving silent, low-heat switching operation in minimal space for capacitive and inductive loads.
Thermostats & Protectors
copper terminal with providing a highly sensitive, low-thermal-expansion-displacement current path in overload protection for precision small appliances and industrial applications.
Detailed Demonstration: Quality Assurance Under a Microscopic Perspective
Contact Surface Spinning Texture
Under high magnification, the head exhibits a uniform concentric spinning texture without any radial microcracks. This signifies perfect metal plastic flow and is a direct reflection of resistance to fatigue spalling.
01
Seamless Filling of Riveting Neck
Observing the riveting holes on the back of the copper part, the metal of the rod fills the gaps in the hole walls and is evenly flanged, without eccentricity or wrinkling, forming a true "surface contact" mechanical locking, rather than line contact or point contact.
02
No Scratches During Stamping and Bending
All bends in the copper stamping part have smooth surfaces without scratches. This is thanks to the guide post and sleeve design and surface polishing treatment of the precision mould, ensuring that the current-carrying cross-sectional area is not reduced due to manufacturing defects.
03
No Residual Stress Warpage
Placing the component flat on a precision marble platform, the entire assembly fits seamlessly, proving that the dual cold working stresses of stamping and riveting have been effectively controlled and released, ensuring smooth mould insertion during tooling assembly.
04
Material Advantages: The Perfect Match of Thermal Conductivity of Copper and Contact Resistance of Silver
The Bulk Material Advantages of T2 Copper
T2 copper contains no less than 99.9% copper and has extremely low total impurities, ensuring that its electrical and thermal conductivity are close to the theoretical values of pure copper. Its face-centred cubic crystal structure endows it with excellent ductility and toughness, preventing cracking during stamping and riveting deformation, and it is not sensitive to hydrogen embrittlement.
Functional Design of the Silver Alloy Contact Surface
Depending on the load characteristics, AgNi (anti-welding, wear-resistant), AgSnO₂ (anti-arc erosion, environmentally friendly and cadmium-free), or AgCdO (high anti-welding, low contact resistance) are selected. The second-phase particles in the silver alloy uniformly disperse the heat of the molten pool under the action of the electric arc, preventing localized welding of pure silver.
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We not only provide standard In-Die Riveting in Metal Stamping, but also offer integrated engineering and manufacturing support based on customers' current ratings, structural designs, and assembly process requirements. This support ranges from material matching and mould development to automated mass production, helping projects achieve more stable long-term supply and product reliability upgrades.
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