As a critical component for achieving circuit on-off control, the Tungsten Contact for Motorcycle Horn serves as the core support for ensuring the stable operation of motorcycle horns, thanks to its excellent arc erosion resistance and anti-welding performance. Made from high-purity tungsten with a purity of ≥99.95%, this type of contact boasts multiple properties tailored for high-frequency on-off operating conditions: Tungsten has an extremely high melting point of 3,410℃, far exceeding that of other metal materials, which prevents it from melting easily under the high-temperature environment of electric arcs; its low vapor pressure significantly reduces metal evaporation loss at high temperatures, effectively extending the service life of the component; with a high hardness of ≥71–74HRA, it exhibits outstanding wear resistance; and its good chemical stability allows it to be exposed to air for long periods without oxidation, lowering the risk of contact failure caused by oxidation.
Motorcycle horns operate on the principle of electromagnetic vibration, and the Industrial Tungsten Brazed Contacts Rivets plays an indispensable role in this process. When the horn button is pressed, current flows through the tungsten contact to the coil, which generates electromagnetic force to attract the armature. The downward movement of the armature presses the contact arm, causing the tungsten contact to disconnect and the coil current to cut off immediately. Subsequently, the armature returns to its original position under the elastic force of the vibrating plate, and the contact closes again. This cycle repeats at an audio frequency of approximately 100Hz, driving the resonance plate to produce a sound of around 100dB. In practical applications, there are two main failure modes of tungsten contacts: contact detachment and contact ablation. Ablation issues are usually closely related to contact surface cleanliness, capacitor capacity, and wiring conditions.
The production and manufacturing of Car Horn Tungsten Contact Rivets are subject to clear technical specifications and industry standards. In terms of key technical parameters, the tungsten purity must meet Grade W1 standards (≥99.95%), the specific gravity is controlled within 19.1–19.3g/cm³, the grain count is ≥10,000 grains/mm², and the hardness is ≥71–74HRA. The diameter tolerance allows a deviation of ±0.05mm, which can be tightened to ±0.02mm for special requirements. Regular specifications cover diameters ranging from Φ3.0–10.0mm and thicknesses of ≥0.5mm. For industry standards, the current applicable norm is QC/T 738-2024 "Electric Horns for Motorcycles and Mopeds", which will be officially implemented on May 1, 2025, fully replacing the previous QC/T 738-2005 standard. This updated standard has revised and upgraded requirements for electric horn performance, test methods, and inspection rules.
Advanced production processes and strict quality control are essential guarantees for the stable performance of Tungsten Contact for Motorcycle Horns. The manufacturing process consists of four major stages: First, tungsten contact blanks are prepared via powder metallurgy; then, high-precision equipment is used to process the blanks to the specified dimensions; next, surface polishing is conducted to remove micro-cracks and oxides; finally, rigorous testing is performed on the contact's dimensional accuracy, surface quality, and performance parameters. Quality control focuses on multiple key points: the weld joint strength must be ≥83MPa, products must comply with EU RoHS & REACH environmental standards, the entire production process strictly follows the ISO9001:2008 quality management system, and precision riveting is achieved using riveting machine positioning plates and dies to prevent tungsten sheet fragmentation caused by improper stress application.
Tungsten Brazed Rivet boasts a wide range of applications beyond motorcycle horns, being extensively used in automotive electrical appliances, automatic switches, relays, machine tool electrical equipment, and other scenarios. In automotive electrical systems, it can be applied to distributors, voltage regulators, and alarms; in the field of automatic switches, it is suitable for fixed and moving contacts of air circuit breakers; for relays, it can be integrated into electromagnetic relays, signal relays, and other products; in machine tool electrical equipment, it works with relay-contactor automatic control devices. From a market perspective, compared with other metal or alloy materials, tungsten contacts feature relatively low prices, offering significant cost advantages. Meanwhile, they excel in arc erosion resistance, simple structure, easy maintenance and replacement, as well as stable and reliable performance. Although contactless electronic ignition systems are becoming increasingly sophisticated, Tungsten Disc remains widely used in the market due to its high cost-effectiveness. Looking ahead, the development of tungsten contacts will follow three main trends: first, high precision, with dimensional tolerance requirements further tightened to ±0.02mm; second, environmental friendliness, as stricter environmental standards drive the industry toward lead-free production; third, intelligence, where integration with electronic control technology will enhance the performance stability of horns.
Professional recommendations are available for the selection and maintenance of Tungsten Metal Small Polished Discs 99.95% purity. When purchasing, first prioritize material purity and opt for Grade W1 high-purity tungsten contacts; second, inspect surface quality to ensure it is smooth and free of cracks, scratches, or other defects; third, verify dimensional accuracy to confirm compliance with motorcycle horn specifications; finally, check certification credentials and choose products certified under the ISO9001 quality management system. For maintenance, regularly clean the contact surface to avoid oil and dust accumulation; periodically inspect whether the contact gap meets operational requirements; promptly replace contacts if ablation or detachment is detected; and it is advisable to have replacement and adjustment operations performed by professional technicians to ensure optimal performance. As a small component in motorcycle horns, Iron Tungsten Contact Rivets is directly related to driving safety. Its excellent arc erosion resistance and anti-welding properties ensure the reliable operation of motorcycle horns under various working conditions. With the continuous advancement of motorcycle technology, the production processes and quality standards for tungsten contacts are also being continuously improved, further strengthening the foundation of motorcycle safety performance.
In response to the application requirements of motorcycle horns and various other fields, as well as the technical standards and performance requirements of tungsten contacts, we have specially developed a full range of Tungsten Contact for Motorcycle Horn products. These products feature precise optimization in purity control, dimensional accuracy, wear resistance, and ablation resistance, fully complying with the application standards of different scenarios. For further information on tungsten contact models, detailed parameters, and customized solutions suitable for your products, please click the link below to consult our professionals.
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