What are Copper Tungsten Contacts for Electric Car Horns?
Engineered for extreme electrical switching environments, these Copper Tungsten Contacts for Electric Car Horns combine the exceptional arc ablation resistance of refractory tungsten with the high thermal conductivity of copper backbones. Primarily deployed in automotive horn switches and smart home latching relays, each component consists of a sintered tungsten head brazed onto a structural copper or steel shank, finished with a corrosion‑resistant nickel plating. As an established direct manufacturing source, we provide full custom OEM/ODM engineering capabilities ranging from custom powder metallurgy ratios to automated stamping, high‑frequency brazing, and rigorous dimensional sorting. Our production lines support high‑volume output while maintaining strict compliance with international electrical standards for heavy‑duty switching gear.
Technical Specifications & Materials of Tungsten Steel Contact Points
| Parameter Dimension | Specification Standard |
| Electrical Conductivity | 32 − 50% IACS |
| Shear Strength (Brazing) | ≥ 280 MPa |
| Plating Thickness | Nickel 3 − 5 μm |
| Contact Resistance | < 0.5 mΩ |
Manufacturing Process of Tungsten Rivet for Electric Horn
Powder Metallurgy Sintering
High‑purity tungsten and copper powders are blended, pressed under high tonnage, and liquid‑phase sintered to create a highly dense, pore‑free Silver AgW Electrical Tungsten Strip Contact with uniform microstructures.
Precision Resistance Brazing
The sintered tungsten head is joined to copper or steel rivet shanks via high‑frequency induction brazing, establishing a metallurgical bond that withstands severe mechanical shock.
Automated Profile Machining
Advanced CNC lathes and stamping presses shape the rivet heads and shanks to precise engineering blueprints, ensuring uniform Motorcycle Horn Tungsten Rivet geometry for automated assembly lines.
Surface Electroplating
Tungsten Rivet Nickel Plated for Car Horn undergo electrolytic nickel plating in automated barrel lines to seal the reactive substrate and prevent surface oxidation during long‑term warehouse storage.
Frequently Asked Questions about Tungsten Steel Contact Points
What are the Industrial Tungsten Brazed Contacts Rivets used for in electric car horns?
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Contacts are used in electric car horn switching systems where repeated electrical arcing occurs. The tungsten tip provides erosion resistance, while the copper rivet improves current transfer and thermal conductivity during frequent horn activation cycles.
How is the tungsten head attached to the copper or steel shank?
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The Tungsten Rivets for Electric Horns are joined using high‑frequency induction brazing with silver‑based filler metals, creating a high‑strength metallurgical bond capable of withstanding severe mechanical vibration.
What is the difference between Copper Tungsten Electrical Contacts and iron rivet tungsten contacts?
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Copper contacts provide better electrical conductivity and heat dissipation compared with iron rivet structures. Iron rivets are typically selected for cost-sensitive applications requiring standard switching performance.
Can a Motorcycle Horn Tungsten Rivet be customized for different horn designs?
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Specifications such as contact diameter, tungsten thickness, rivet material, overall height, and surface treatment are subject to modification in accordance with customer-supplied drawings and electrical performance standards.
How does nickel plating improve Silver AgW Electrical Tungsten Strip Contact performance?
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Nickel plating protects exposed metal surfaces from oxidation during storage and operation. It also improves corrosion resistance when contacts are used in automotive and industrial environments.
contact us
Submit your Copper Tungsten Contacts for Electric Car Horn drawings, electrical load requirements, and application details for engineering evaluation. Our manufacturing process supports tungsten material forming, copper rivet assembly, welding, plating, and volume production for automotive horn and relay contact applications.
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