Products Description
Trimetal contact rivets typically consist of a highly conductive material (such as silver), an intermediate bonding metal, and a strong base metal (like steel or brass) for mechanical support. Common material combinations include Ag/Cu/Ag, AgNi/Cu/AgNi, AgCdO/Cu/AgCdO, AgSnO2/Cu/AgSnO2, AgZnO/Cu/AgZnO, and AgCuO/Cu/AgCuO. The production process involves carefully selecting the three metals based on desired properties and application requirements.
Structure And Design
The general structure of a tri-metal contact rivet has a head made of the outer contact material, a shank with the middle base material, and the end of the shank is also covered with the same outer contact material as the head. For example, in a common configuration, the outer layers can be silver-based alloys such as AgNi (silver - nickel), AgSnO₂ (silver - tin oxide), AgZnO (silver - zinc oxide), or pure silver (Ag), while the middle layer is copper (Cu).
The dimensions of Double Sides Contacts can vary widely depending on the specific application requirements. Diameters can range from as small as 1.5 mm to as large as 10 mm or more, and lengths are also customized according to the needs of the device in which they will be installed. The thickness of the outer contact material layers can be adjusted, with common thicknesses in the range of 0.2 - 0.5 mm, while the middle copper layer thickness is designed to provide the necessary mechanical and electrical support, usually being relatively thicker.
Material Advantages
Excellent Conductivity
Silver is the most conductive metal, capable of providing extremely low contact resistance and reducing energy loss during current transmission. The silver-copper composite material of Multi-layer Silver Contacts significantly enhances electrical transmission efficiency compared to single-copper contacts.
01
Strong High-Temperature and Corrosion Resistance
Trimetal electric rivet contacts can operate stably in environments up to 250°C. The composite structure of copper and silver improves corrosion resistance. Even in harsh conditions like humidity and salt spray, tri-metal contacts maintain good electrical contact performance.
02
High Mechanical Strength and Wear Resistance
The composite material structure of Trimetal Electric Contacts gives them greater mechanical strength. Copper, as a supporting metal, enables the contacts to withstand pressure and impact under high loads, preventing deformation or damage.
03
Good Thermal Conductivity
The multi-layer metal structure facilitates improved heat dissipation, preventing overheating of the Trimetal Moving Contacts and adjacent components.
04
Strong Oxidation Resistance
The outer metal layer can be selected for its excellent oxidation resistance, protecting the inner layers and maintaining conductivity for Double Sides Contacts.
05
Cost-Effectiveness Of The Three-Composite Contact Process
Reduced Precious Metal Usage
The three-composite contact process allows for the economical use of precious metals. For example, the head layer of the rivet can be made from a precious metal like silver or its alloy, which is known for its excellent electrical conductivity.
Reduced Manufacturing Procedures
By integrating three metals into a single rivet, the manufacturing process can be simplified, reducing the number of steps and components required. This not only saves time and labor but also reduces the potential for defects and the associated costs for Trimetal Silver Contacts.
Long-Term Cost Savings
Due to their durability and resistance to corrosion and wear, Trimetal Contact Rivets have a longer service life compared to some other types of contacts. This means fewer replacements are needed, resulting in long-term cost savings for the end-user.
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