Products Description
Trimetal Rivet Contacts features a three-layer composite contact structure developed for high-end relays and industrial control systems. Its head and feet are made of silver alloy, while the core is made of high-purity copper, achieving stable integration through metallurgical bonding and precision forming processes. This solution can replace integral silver contacts while ensuring conductivity, arc resistance, and weldability in the contact area, achieving approximately 30–50% material cost optimization.
Technical Features
Graded Functional Material Design
The composition and properties of the three layers are not abrupt, but rather a compositional gradient is created at the interface through process control, thereby mitigating thermal and mechanical stresses and improving thermal shock fatigue resistance for
Trimetal Silver Contacts.
Controllable Microstructure
By precisely controlling the composite rolling and heat treatment processes for Trimetal Electrical Contacts, ideal grain size and orientation can be obtained, optimizing the overall performance of the material's electrical conductivity, thermal conductivity, and mechanical properties.
Working Surface Topography Engineering
The Trimetal Contact Rivets working surface is not a simple plane; it can be designed as a sphere, plane, or specific curvature according to requirements to optimize the initial contact area, arc movement path, and wear distribution.
Advanced Manufacturing Process
Cold Forging
A multi-station cold forging machine is used to press the copper core into shape, ensuring a first-pass forming rate >98% and avoiding Trimetal Silver Electric Contact material density damage.
Platinum Deposition
Chemical or electroplating deposition is performed on the formed copper part to form a uniform silver alloy gold plating layer. The plating thickness is strictly controlled between 5-8 micrometers to ensure sufficient conductivity for Trimetal Rivet Electrical Contact.
Automated Assembly
The head, copper core, and feet are riveted together using a high-precision assembly line to form a complete three-composite structure for Electric Double Metal Contact Rivet.
Material Advantages
Contact Layer Material
Utilizes silver alloys including AgNi, AgCdO, and AgSnO2, with a thickness of 0.2-0.5mm. Silver alloys offer excellent conductivity, corrosion resistance, and arc resistance, ensuring Multi-layer Silver Contacts long-term stable operation.
Intermediate Layer Material
Copper or copper alloy serves as a transition layer, with a thickness of 0.5-0.8mm. The copper layer provides a low-resistance current path and acts as a buffer between the silver and steel layers, reducing interfacial stress for Tri-metal Rivet Contacts.
Rivet Layer Material
Cold-rolled low-carbon steel or copper-nickel alloy provides mechanical strength and a weldable foundation. The steel layer ensures overall Electrical Trimetal Rivet Contacts rigidity and installation stability while reducing overall material costs.
contact us
If you are looking for a Trimetal Rivet Contacts solution that balances high reliability and cost optimization for your relay projects, please contact our engineering team. We will quickly assess your application requirements and provide professional advice that is ready for mass production.
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