Products Description
The Tri-metal Electrical Contact Rivet is an advanced, three-layer heterogeneous metallurgical interconnect component produced through multi-station precision cold-heading or hot-pressing techniques. It features two distinct working layers-composed of precious metals (or their alloys)-symmetrically or asymmetrically fused onto the opposing sides of a central pure copper substrate. Primarily serving as a core element for bidirectional switching control, it is deployed in high-end automotive window relays, AC contactors, smart meter circuit breakers, and miniature surge protection switch systems.
Product Advantages
Significantly Reduced Material Costs
The Three Compound Rivets structure utilizes silver alloy exclusively on the two contact working surfaces (accounting for 30%–50% of the total volume), while the central conductive section employs pure copper. Compared to solid silver contacts, this design reduces silver consumption by 50%–70% and lowers the unit cost by 30%–65%, all while maintaining identical electrical performance.
Integrated Dual-Sided Contacts
A single Electric Double Metal Contact Rivet simultaneously provides two independent working surfaces-at both the head and the tail-making it ideal for applications such as latching relays and dual-contact switches. Compared to using two separate bi-layer contacts, the tri-composite solution reduces the total number of components and riveting steps, thereby boosting assembly efficiency by approximately 40%.
Enhanced Cold Work Hardening
During the cold heading process for Trimetal Rivet Electrical Contact, the pure copper substrate undergoes cold work hardening, resulting in a 20%–30% increase in hardness. Following riveting, this enhancement ensures superior pull-out resistance, making the assembly highly resistant to loosening in high-vibration environments.
Application Fields
| Power Transmission and Distribution Equipment | Trimetal Silver Electric Contact is used for the moving and fixed contacts of molded-case circuit breakers and air circuit breakers, capable of withstanding short-circuit surges and high-current overloads within power grids. |
| Industrial Automation Control | High Precision Trimetal Silver Electrical Contact serves as the core contact component in AC contactors, ensuring reliable performance during frequent start-stop cycles and heavy-load operations in industrial environments. |
| New Energy Vehicle Systems | Electrical Switch Trimetal Contacts applied in on-board high-voltage DC relays, meeting rigorous requirements for high power density, exceptional reliability, and vibration resistance. |
| Major Appliances and HVAC Systems | Utilized in high-power compressor starters, providing a safe, maintenance-free power distribution solution with an extended service life. |
Frequently Asked Questions
Q1: What is the fundamental difference between a three-compound rivet and a bi-layer contact?
A: The tri-composite contact features functional silver alloy layers on both sides, making it suitable for bidirectional switching applications. In contrast, the bi-layer contact possesses a functional layer on only one side; consequently, it cannot meet bidirectional contact requirements and offers lower adaptability and versatility across various operating conditions.
Q2: Is the Electric Double Metal Contact Rivet structure prone to interlayer delamination or peeling?
A: No. The product is manufactured using a cold-pressure metallurgical bonding process, wherein the three material layers are fused into a single, integral unit. This results in high bonding strength, enabling the contact to withstand the impact of riveting as well as vibrations encountered during long-term operation, thereby eliminating any risk of delamination or peeling.
Q3: What materials are used in the Trimetal Rivet Electrical Contact?
A: It primarily consists of a composite structure comprising silver alloys (such as AgSnO2, AgCdO, and AgNi) and Oxygen-Free High-Conductivity (OFHC) copper. The specific combination of silver alloys is selected based on the requirements of the intended application.
contact us
For consultation on Tri-metal Electrical Contact Rivet product specifications, relay contact application solutions, sample verification and batch quotations, or if you would like to discuss your electronic control component design, please contact our professional team and we will provide technical support and solutions based on your application needs.
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