Products Description

Our Switch Contacts feature a composite structure of silver alloy contact layer + electrolytic copper support core. Achieving strong interlayer bonding via high-vacuum electroplating and precision stamping processes, they retain the high conductivity and arc resistance of silver alloy, while the high-strength electrolytic copper core addresses the deformation issue of pure silver contacts. Moreover, they significantly reduce precious metal consumption, making them a groundbreaking electrical contact solution that balances performance and cost in the low-voltage electrical field.
As a professional manufacturer with 20 years of expertise in the low-voltage electrical sector, our Silver Point Contacts have become a trusted choice for global industrial control equipment manufacturers, providing reliable guarantees for circuit on-off control in high-frequency and heavy-load scenarios.

Product Advantages

Superior Cost-Effectiveness

We achieve a 30%-50% comprehensive cost reduction for Normally Open Contactor Electrical Contacts, driven by material science innovation and process efficiency enhancement rather than performance compromise. By replacing most silver volume with high-conductivity electrolytic copper, we significantly reduce precious metal dependence without sacrificing critical contact performance. This means you can obtain performance comparable to premium silver contacts at a cost close to traditional copper contacts, achieving a qualitative leap in product competitiveness.

Breakthrough Bonding Technology

The primary failure risk of AgNi Bimetal Contact Rivets stems from interlayer delamination. We adopt independently developed high-temperature and high-pressure diffusion bonding technology. In a high-vacuum or protective atmosphere, precise control of temperature and pressure enables atomic interdiffusion between silver and copper at the interface, forming a metallurgically bonded transition layer. Its bonding strength even exceeds that of the base material itself, ensuring permanent adhesion against extreme thermal cycling (the rapid temperature alternation during switching) and mechanical fatigue. We guarantee that every contact is free of pinholes, copper exposure, and delamination.

Relentless Pursuit of Quality

This level of quality is derived from full-chain precision control. From grain size management of electrolytic copper blanks to high-vacuum ion plating ensuring micron-level silver layer uniformity, and 100% sampling inspection of contact resistance and bonding strength, we have established a Spring Loaded Electrical Contact quality control system that exceeds industry standards. What we deliver is not just "products", but "consistency".

Multi-layer Silver Contacts

Manufacturing Process

1. Precision Pre-treatment of Substrate and Alloy

The electrolytic copper substrate is formed via high-precision CNC stamping to ensure shape consistency and dimensional accuracy. Silver alloy materials are customized into targets according to performance requirements, and impurities are eliminated through vacuum melting to guarantee the uniformity of subsequent electroplating layers. The pre-treated substrate undergoes ultrasonic cleaning and plasma activation to remove surface oil stains and oxide layers, providing a clean interface for the electroplating bonding of Round Silver Bimetal Rivets.

2. High-Vacuum Electroplating

High-vacuum electroplating technology is adopted to deposit silver alloy layers on the electrolytic copper substrate, with a vacuum degree of ≤5×10⁻⁵ Pa and a plating thickness tolerance of ≤±0.02 mm. This process achieves atomic-level bonding between silver alloy atoms and the electrolytic copper substrate through ion bombardment, resulting in an interlayer adhesion strength of ≥150 MPa-far superior to conventional electroplating processes. It ensures Bimetal Silver Composite Contact Rivets have no delamination risk under high-frequency impact.

3. Precision Forming and Post-treatment

After electroplating, Bimetal rivet-type contacts are processed into their final shape via precision stamping and grinding to remove burrs and sharp edges, ensuring the contact surface roughness Ra ≤ 0.8 μm. Finally, vacuum annealing is performed to eliminate internal stress, optimizing the arc erosion resistance of the silver alloy layer and the mechanical stability of the electrolytic copper core.

4. Comprehensive Performance Testing

Each batch of Switch Electrical Contacts undergoes contact resistance testing, hardness testing, arc erosion resistance testing, and adhesion testing to ensure electrical and mechanical properties comply with IEC standards. Environmental simulation tests, such as high-low temperature cycling and salt spray corrosion, are conducted to verify the reliability of Spring Loaded Electrical Contacts under complex working conditions. Non-conforming products are directly rejected, with a yield rate of 99.8%.

Silver Contacts Processing Flow Chart

Application Fields

Power Systems

Silver Point Contact is suitable for high-voltage and high-current equipment such as transformers and power switchgear. Capable of withstanding frequent switching operations and harsh electromagnetic environments, they provide safe and reliable electrical connections in critical links like substations and transmission lines, ensuring the stable operation of power grids.

Industrial Control Systems

Normally Open Contactor Electrical Contacts are widely used in high-load equipment, including automated production lines and robot control systems. Featuring excellent wear resistance and anti-interference capability, they can adapt to complex industrial environments with high temperatures, dust,t and vibrations, guaranteeing the continuity and precision of production processes.

Home Appliance Sector

Switch Contacts can be applied to high-power household appliances such as air conditioners and electric water heaters. Installed at the power input terminals or internal circuits of these appliances, they deliver stable current transmission and reliable connections, effectively preventing equipment malfunctions or potential safety hazards caused by poor contact.

Automotive Electronics

AgNi Bimetal Contact Rivets are utilized in power switch systems of both new energy vehicles and traditional vehicles, such as key components like battery management systems and motor controllers. They provide stable and reliable electrical connections, resist the impacts of jolts, temperature variations, and electromagnetic radiation during vehicle operation, and ensure the efficient and safe running of automotive electrical systems.

Silver Contacts Used in Industrial Control Relays