Electrical Contact Rivets For Switches
Products Description
Electrical Contact Rivets for Switches achieve rivet geometry through multi-station cold forging, followed by controlled atmosphere annealing to regulate microstructure and properties. The final product is a solid structure made of a single material, with the head serving as the electrical contact working surface and the shank as the mechanical riveting section, resulting in a seamless, layered interface.
Solid Contacts offer a contact solution based on the intrinsic properties of the material, precisely controlled through process parameters, and with predictable performance under extreme operating conditions. Unlike solutions relying on surface coatings or composite structures, the performance consistency of contacts directly depends on quantifiable process parameters such as material homogeneity, cold deformation distribution, and the degree of annealing recrystallization. This provides a solid material foundation for reliability modeling during the R&D phase.
Key Selling Technologies
The Physical Root of Low Contact Resistance
When Solid Silver Contact Rivets close, the contact micro-protrusions plastically deform under pressure, expanding the actual contact area and significantly reducing shrinkage resistance. Silver's low hardness allows for a large actual contact area even with relatively low contact pressure.
01
Symmetrical Control of Arc Erosion
Contact in Electrical regulates the surface tension of the molten pool and the stability of the solidification front through alloying (Ni or SnO₂), inhibiting unidirectional material migration, resulting in a more uniform erosion morphology and delaying contact geometric failure.
02
Process Controllability of Microstructure
Within the annealing window (200-400℃) of Silver Rivet Contacts, a fine-grained structure improves hardness and wear resistance, while a coarse-grained structure improves ductility and resistance to stress relaxation.
03
Uniform Failure Mode Due to Homogeneous Structure
Pure Silver Solid Contact Rivet for Switches has a single-phase structure with no interface degradation mechanism. Performance degradation manifests as uniform corrosion of the entire material. The lifetime prediction model does not require the inclusion of interface coupling terms, simplifying reliability assessment.
04
Traceable Architecture for the Entire Process
Each batch of Silver Tin Oxide Contact is linked to raw material spectral data, cold heading equipment parameters, annealing temperature profiles, atmosphere records, and finished product dimensional measurements.
05
Advantages of Precision Cold Heading
Compared to traditional machining processes, precision cold heading ensures the complete and continuous flow of metal grains in the product, effectively improving the overall mechanical structural stability of Silver Alloys Contacts. It also significantly increases raw material utilization and achieves a high degree of consistency and uniformity in dimensional accuracy across batches.
For automated relay mass production scenarios, precision cold heading technology can accurately control key parameters such as coaxiality of the Silver Cadmium Oxide Contact rivet, head height, and flatness of the contact surface, greatly improving product adaptability and operational stability of automated feeding, and meeting the needs of efficient mass production on assembly lines.
Application Scenarios
| High-Voltage DC Relays for New Energy Vehicles | Contact in Electrical: In this scenario, AgSnO₂ or AgNi materials are typically selected to cope with high surge currents and DC arc erosion. The contact geometry design needs to optimize the opening distance and overtravel, combined with permanent magnet arc blowing or air-blown arc extinguishing structures. |
| Photovoltaic Inverter Relays | DC-side relay contacts face the challenge of breaking high DC voltages; Silver Electrical Contact Rivets must possess excellent resistance to DC arc erosion. AC-side relays operate under relatively milder conditions, and AgNi or pure silver materials can be selected. |
| Battery Management Relays for Energy Storage Systems | Pre-charge relays face capacitive load closing surges; Electrical Contact Rivets for Sockets must be made of AgSnO₂ material with strong surge resistance. For main relays that are continuously conducting, low contact resistance and low temperature rise are primary objectives; AgNi or pure silver materials can be selected. |
| Industrial Frequency Converters and Servo Drive Relays | Silver Contact Rivets for PCB: Pure silver is typically used in control circuit relays to achieve extremely low contact resistance and good signal integrity. AgNi or AgSnO₂ is used in power circuit contactors to address the arcing challenges of breaking inductive loads. |
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For technical information, sample evaluation of Electrical Contact Rivets for Switches, or joint development projects, please contact our application technology team.
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