Tungsten Copper Electrical Contact is a composite functional material made using precision processes such as hydrostatic pressing, high-temperature sintering, and copper infiltration, leveraging the high-temperature resistance of high-purity tungsten powder and the high conductivity of high-purity copper powder. It is an indispensable core connection component in modern electrical systems. As a special pseudo-alloy, tungsten and copper are neither miscible nor do they form intermetallic compounds. The uniformly mixed structure of the two phases allows the material to possess the core advantages of both metals, making it a preferred material for complex electrical conditions.
In high and low voltage electrical appliances, instruments, and other equipment, current-carrying connection components need to repeatedly switch circuits on and off and carry current, operating under harsh conditions with extremely high reliability requirements. Car Horn Tungsten Contact Rivets, with its excellent resistance to arc burn-out, anti-welding performance, and outstanding arc-breaking capability, is perfectly suited for these demanding applications. It not only boasts excellent electrical and thermal conductivity and a low coefficient of thermal expansion, remaining unsoftened and undeformed at high temperatures, but also possesses a combination of high strength, high density, and high hardness. At temperatures above 3000℃, the copper component liquefies and evaporates, absorbing heat and enabling self-cooling of the material, effectively extending component lifespan.
The fabrication of Industrial Tungsten Brazed Contacts Rivets relies on mature powder metallurgy technology. Mainstream processes include melt infiltration, copper oxide powder infiltration, and injection molding, allowing for customization of material composition and structure according to different performance requirements. Melt infiltration is suitable for low-copper-content products, first preparing a porous tungsten framework before melt infiltrating copper; the copper oxide powder infiltration method can form a continuous copper matrix and a tungsten-reinforced framework; the injection molding method is suitable for manufacturing complex-shaped components, achieving density through sintering after molding with the addition of organic binders. Different processes allow for flexible adjustment of the tungsten-copper ratio, adapting to diverse applications such as high voltage, high current, and vacuum.
The power industry is the core application area for Car Horn Tungsten Contact Rivets, widely used in key components such as high-voltage switches, circuit breakers, and protective rings, and also suitable for industrial scenarios such as electrothermal processing, welding equipment, and plasma equipment. In high-voltage vacuum discharge tubes, components can experience instantaneous temperature rises of thousands of degrees Celsius. The product's high toughness and stable electrical and thermal conductivity ensure long-term reliable operation of equipment. In resistance welding and electrical discharge machining (EDM) fields, its low loss rate and high machining accuracy significantly improve processing efficiency and workpiece quality.
Material properties are influenced by both internal processes and external operating conditions. Internal factors include structural dimensions, manufacturing processes, and tungsten powder particle size. Proper structural design, optimized sintering and infiltration processes, and the appropriate ratio of coarse to fine tungsten powder can effectively improve the material's resistance to burn-off. External factors encompass current characteristics, working medium, and breaking speed. Optimizing switching parameters and adapting to the corresponding medium environment can further reduce component losses. Since its introduction in the 1930s, the Tungsten Brazed Rivet has continuously evolved alongside the development of the power and electronics industries. Today, it is a key material driving the upgrading of high-voltage electrical appliances and ensuring the stability of electrical systems. In the future, it will also find broader applications in new energy, high-end equipment, and other fields.
Our Tungsten Copper Electrical Contact strictly controls the purity of raw materials and the production process, allowing for adjustments to the tungsten-copper ratio as needed. The product is erosion-resistant, has stable conductivity, and is compatible with various electrical equipment. We also support customized specifications and bulk supply, fully meeting the diverse needs of industrial production and equipment integration. We welcome customers from all sectors to inquire about cooperation and purchase our high-quality products.
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