In the electrical field, Electric Horn Tungsten Rivets serve as a critical component in switches for making or breaking electrical circuits. Their performance directly affects the quality and stability of various electrical products. Tungsten contacts are widely used in the contacts of AC contactors, automobiles, motorcycles, electric horns, magneto-electric machines, and many other electrical products, playing an indispensable role.
With the rapid development of the automotive industry, the demand for Tungsten Rivets for Automotive Horns has surged. Users are imposing increasingly stringent requirements on tungsten contact materials. The rod must be free of cracks and scratches, with a mirror-like surface. The cross-sectional grains should be fine and evenly distributed, and the fibers should be short to ensure the structural stability of the material. Additionally, high requirements are placed on straightness, concentricity, and roundness, which directly affect the precision and reliability of Tungsten Contacts for Electrical Contactor in practical applications. In terms of performance, the material must have high hardness to withstand frequent mechanical impacts; good impact toughness to avoid breaking under sudden external forces; low vapor pressure and low evaporation rate to maintain a stable physical state at high temperatures; a low coefficient of thermal expansion to minimize dimensional deformation due to temperature changes; and excellent and stable arc resistance to withstand the erosion caused by electrical arcs during circuit making and breaking.
To meet these demanding requirements, technicians have devoted considerable effort. In the production process of Electric Horn Tungsten Contact Rivets, common issues such as splitting, brittleness, uneven grain size in the cross-section, and failure to meet requirements for rod concentricity and straightness often arise. These problems severely restrict the improvement of product quality. Technicians have conducted comprehensive analyses through in-depth research and repeated experiments to identify the causes of these issues.
Firstly, the quality control of raw materials is crucial. If the purity of tungsten ore is low and contains impurities, various defects may occur during subsequent processing. Secondly, the parameter settings of the processing technology also significantly affect the quality of Electrical Tungsten Contact Rivets for Horns. For example, in processing steps such as forging and rolling, unreasonable parameters such as temperature, pressure, and processing speed can easily lead to splitting and brittleness. Additionally, the precision and stability of processing equipment cannot be overlooked, as minor deviations in equipment can accumulate into dimensional errors in the product.
To address these issues, technicians have implemented a series of effective measures. In the raw material procurement stage, suppliers are strictly screened, and the purity of tungsten ore is rigorously tested to ensure high-quality raw materials. In terms of processing technology, parameters are continuously optimized. Through extensive experiments and simulations, the optimal combination of processing temperature, pressure, and speed is identified. At the same time, advanced processing equipment is introduced to improve the precision and stability of the equipment, reducing defects in Tungsten Rivets for Automotive Horn Contacts caused by equipment issues.
From a material perspective, tungsten is a non-ferrous metal and an important strategic metal. In ancient times, tungsten ore was known as "heavy stone." In 1781, Swedish chemist Carl Wilhelm Scheele discovered scheelite and successfully extracted a new elemental acid-tungstic acid. In 1783, the Spaniard de la Mina discovered wolframite and also extracted tungstic acid from it. In the same year, tungsten powder was first obtained by reducing tungsten trioxide with carbon, and the element was officially named. Tungsten has a crustal abundance of only 0.001%, and 20 tungsten-containing minerals have been discovered. Tungsten deposits are generally formed in association with granitic magmatic activity. After smelting, tungsten exhibits a silvery-white, lustrous metallic appearance, with an extremely high melting point and significant hardness.
It is these unique material properties that enable tungsten to exhibit superior performance when used as an electrical contact or contact material. It is resistant to arc erosion, effectively withstanding the abrasion of contact surfaces by electrical arcs. It has good anti-welding properties, making it less likely to adhere to other materials at high temperatures. Metal surface evaporation, transfer, and consumption caused by electrothermal effects are minimal, ensuring the long-term stability of Tungsten Contacts for AC Contactor. It has strong current interruption capabilities, reliably achieving circuit making and breaking. Moreover, it possesses excellent wear and impact resistance. Compared with other metals or alloy materials, tungsten is relatively inexpensive, which has led to the widespread application of tungsten contacts and tungsten discs in various fields, including industry, agriculture, science and technology, and national defense.
