Bimetal Electric Rivet Contact
Products Description
Bimetal Electric Rivet Contact typically consists of two parts:
Upper layer: Silver alloy contact layer
Lower layer: Copper substrate layer
The silver alloy layer is primarily responsible for current contact and arc bearing, while the copper layer provides conductive connection, mechanical support, and welding installation. Through a composite manufacturing process, the two materials form a stable bond structure, enabling the product to simultaneously possess:
Excellent electrical conductivity
Good arc resistance
Stable mechanical strength
Highly efficient welding adaptability
More efficient material utilization
Manufacturing Advantages and Production Processes
Uninterrupted Fiber Flow
The cold heading process allows the metal fibers within the material to flow continuously according to the shape, greatly enhancing the impact resistance and mechanical strength of the Switch Bimetal Silver Contact head.
Atomic-Level Bonding
The silver-copper interface composite achieved under high pressure has a bonding strength higher than the tensile strength of the material itself, eliminating resistive delamination.
High-Precision Tolerance Control
Utilizing multi-station fully automated equipment, critical dimensions can be controlled within 0.02mm/pm, perfectly adapting to high-speed automated assembly lines.
Conformity Guarantee
Each batch of Bimetal Ag/Cu Silver Contact Riveting undergoes online CCD image inspection to eliminate burrs, cracks, or geometric deformations.
Application Advantages: Empowering Electrical Control Links in Multiple Scenarios
Miniature and Smart Relays
In smart meters where space is extremely limited, contacts need to be miniaturized while also handling surge currents. The compact structure and high resistance to welding of the Bimetal Silver Rivet Contacts for Electric Power are the cornerstones for ensuring the reliable operation of smart grid terminals.
01
Industrial AC Contactors
Facing millions of frequent switching cycles, the silver alloy layer of the moving contact provides ablation protection, while the copper base of the stationary contact provides stable support, significantly extending the mechanical and electrical life of the contactor.
02
Automotive Relays and BMS Systems
New energy vehicles have extremely high requirements for high-voltage DC arc suppression. The excellent arc resistance of the Silver Bimetal Rivet Contacts and the low thermal resistance of copper effectively suppress the elongation and ablation of the DC arc, ensuring the safety of the automotive high-voltage circuit.
03
Residual current circuit breaker
Under transient short-circuit current, the Electrical Contact Point for Switches can withstand huge electrodynamic forces and thermal shocks instantly without fusion welding, ensuring that the circuit breaker completes tripping protection within milliseconds.
04
Detailed Showcase: Engineering Ingenuity at the Microscopic Scale
| Contact Head Surface (Silver Alloy) | Exhibits a uniform and delicate metallic luster, free from microcracks, pores, and obvious cutting textures. A dense microstructure is visible under a high-powered microscope, serving as the first line of defense against arc erosion. |
| Composite Bonding Interface (Longitudinal Section) | Metallographic observation reveals a wavy, interlocking interface between the silver alloy and copper. The interdiffusion layer is of uniform thickness and free from brittle intermetallic compound precipitation-a crucial detail preventing delamination and increased thermal resistance. |
| Rivet Shank (Copper) | Shank diameter tolerances are controlled within the micrometer range, with a smooth surface free from scratches. |
| Tail riveting forming allowance | The chamfer and hardness control of the tail of the copper rod are just right, which can ensure smooth flanging and forming during riveting, and will not cause the contact bridge to crack due to excessive hardness, which provides great convenience for downstream assembly processes. |
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We not only offer standardized Customized Electrical Bi-Metal Contact products, but also provide integrated engineering support from material selection and structural development to mass production, tailored to customers' relay structure, current load, operating life, and automated assembly requirements. This helps customers achieve more stable, efficient, and sustainable electrical connection solutions.
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