Products Description
In high-end relays and industrial control systems, contact points must balance frequent operation, electrical conductivity, and cost. Trimetal Composite Rivet Terminals adopt a three-layer structure of "silver alloy – pure copper – silver alloy", with silver alloy at the head and foot, and a highly conductive pure copper layer in the middle. This structure is specially designed for transferring moving contacts. While ensuring performance and reliability, it significantly reduces the use of precious metals, cutting material costs by 30%–50% compared with solid-silver contacts, and delivering stable performance and service life.
Trimetal Multi-Layer Riveted Contacts feature high technical barriers and few manufacturers capable of mass production. Through our proprietary processes, we achieve precise control of the silver layer, high-strength bonding, and stable mass production, providing high-end customers with a mature solution that can replace solid silver contacts.
Core Advantages of the Product
AgCuAg Composite Rivet Contacts adopt a structure of silver alloy head + pure copper middle layer + silver alloy foot, which perfectly matches the bi-directional operation, left-right switching and double-sided conduction mode of industrial control relays. The upper and lower silver layers deliver excellent electrical conductivity, arc resistance and wear resistance simultaneously. Whether the contact moves upward or downward, it maintains a stable, low-resistance connection. This solves the shortcoming of ordinary double-layer contacts that only achieve high-performance conduction on one side, resulting in more balanced service life and more reliable operation of the changeover mechanism.
AgCuAg Multi-Layer Electrical Contacts use a pure copper core in the middle, greatly reducing the consumption of silver alloy. Without compromising electrical contact performance, mechanical life or temperature rise characteristics, the overall cost is 30%–50% lower than that of solid silver contacts. In mass production of relays, this cost advantage directly translates into product price competitiveness and profit margins, making it especially suitable for export-oriented industrial control relay manufacturers.
The biggest technical challenge of Trimetal Rivet Electrical Contact lies in ensuring uniform thickness, firm bonding, no peeling and no copper exposure of the head and foot silver layers. We adopt a proprietary metallurgical composite process, which forms an atomic-level bonding interface between silver alloy and pure copper under high temperature and high pressure. The interface is free of bubbles, gaps and oxidation. It remains structurally intact under high-frequency commutation, mechanical shock and thermal cycling, eliminating issues such as silver layer peeling, copper exposure, arcing and contact failure.
The middle pure copper base of Trimetal Electric Contacts features excellent thermal conductivity and structural strength. It quickly dissipates heat generated by arcing and contact resistance, reducing the overall temperature rise of the contact and delaying material aging.
Meanwhile, pure copper provides sufficient rigidity and fatigue resistance, preventing the contact from bending, deforming or breaking during long-term high-frequency commutation. This significantly improves both the mechanical life and electrical life of the entire relay.
Details Display
Uniform silver layers, no thinning, no exposure
Through precise composite and molding control, the silver alloy thickness of the Trimetal Moving Contacts is uniform at both head and foot, with full surface coverage. No local copper exposure or silver layer thinning occurs, ensuring stable bi-directional electrical contact performance.
Strong three-layer bonding, no delamination, no bubbles
The silver layer and pure copper of Trimetal Moving Contacts form a metallurgical bonding interface. The cross-section is dense and seamless, defect-free under a high-power microscope. No separation or peeling under long-term reversing operation and thermal shock.
High coaxiality, no riveting eccentricity
Trimetal Multi-Layer Riveted Contacts feature excellent coaxiality in the three-layer composite structure, with high concentricity of head, foot and shank, no bending or eccentricity. After riveting, the contact position is accurate and the contact pressure is uniform, avoiding poor unilateral contact.
Smooth end faces, stable low contact resistance
The upper and lower contact surfaces of AgCuAg Composite Rivet Contacts are precisely processed with high flatness and low roughness, effectively reducing contact resistance and temperature rise, minimizing arc ablation, and extending relay service life.
Customization & Service
Structure & Size Customization
We support the customization of AgCuAg Multi-Layer Electrical Contacts with different total heights, head diameters, leg lengths, rod diameters, and step structures, according to customers' drawings or samples, which are perfectly matched to various change-over relays and bi-directional contact structures.
Silver Layer Thickness & Material Customization
The thickness of upper and lower silver layers and silver alloy grades of Trimetal Rivet Electrical Contact can be customized based on customers' load, service life requirements and cost targets, achieving an optimal balance between performance and cost.
Fast Sampling & Small-batch Trial Production
For the new product development of Trimetal Electric Contacts, we provide fast sampling service. Conventional structures can be delivered quickly, supporting assembly testing, service life testing and temperature rise testing, helping customers shorten the development cycle.
Technical Support & Full-process Service
- Pre-sales: Professional engineers provide selection, structure suggestions and material solutions for Trimetal Composite Rivet Terminals, solving pain points in change-over contact design.
- In-sales: Special personnel follow up production, quality control and delivery schedule, supporting inspection and process audit.
- After-sales: Provide quality assurance and technical response, assist in solving problems of assembly, service life and reliability, and establish long-term and stable cooperation.
Contact Us
If you have any requirements concerning the procurement, selection, sample request, or customization of Trimetal Composite Rivet Terminals, or if you wish to obtain further information regarding product details, please do not hesitate to contact us. We will deploy a professional team to provide personalized one-on-one service, develop customized adaptation solutions, and guarantee stable supply, precise selection, and efficient procurement processes.
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