By optimizing the halogen gas composition, the life of the tungsten wire can be effectively extended. The principle of halogen bulbs is to inject halogen gases such as iodine or bromine into the bulb. These gases react chemically with the sublimated tungsten wire at high temperature to form tungsten halides. In the process of moving to the center of the glass tube, the tungsten halides will decompose back into halogen vapor and tungsten, so that the tungsten is deposited on the filament again to make up for the evaporated part. Through this regeneration cycle process, the service life of the tungsten wire can be greatly extended. Here are some specific optimization strategies:
- Choose the right type of halogen
Iodine and bromine: Iodine and bromine are the most commonly used halogen gases in halogen bulbs. They have moderate chemical reactivity with tungsten wires and can effectively extend the life of tungsten wires while ensuring brightness.
Compound halogen: In some cases, the introduction of compound halogens (such as chlorine-bromine-iodine mixtures) can further increase the rate of halogen-tungsten cycles, thereby extending the life of tungsten wires. However, attention should be paid to the proportion and type of compound halogens to avoid severe corrosion to the cold end.
- Control the pressure and purity of halogen gas
Gas pressure: The gas pressure in halogen bulbs has a significant effect on the life of tungsten wires. Properly increasing the gas pressure can inhibit the evaporation of tungsten atoms, thereby extending the life of tungsten wires. However, excessive gas pressure may cause the gas flow in the bulb to deteriorate, affecting the heat dissipation effect. Therefore, it is necessary to find a suitable gas pressure balance point.
Gas purity: The purity of halogen gas is also a key factor affecting the life of tungsten wires. High-purity halogen gas can reduce the corrosion and contamination of tungsten wires by impurities, thereby extending its service life.
- Optimize the structure and process of halogen bulbs
Bulb size and material: The bulb size and material selection of halogen bulbs will also affect the life of tungsten wires. Using high-temperature resistant and high-strength quartz glass, high-aluminum glass or high-boron glass as bulb materials can withstand higher working temperatures and air pressures, thereby extending the life of tungsten wires.
Manufacturing process: Optimizing the manufacturing process of halogen bulbs, such as improving the vacuum degree and reducing pollution during the manufacturing process, can also effectively extend the life of tungsten wires.
- Adjust the working conditions of halogen bulbs
Working voltage and current: The working voltage and current of halogen bulbs have a significant effect on their life. Excessive voltage and current will accelerate the evaporation and aging of tungsten wires. Therefore, appropriate working conditions should be selected according to the rated power and current of halogen bulbs.
Working environment: The working environment of halogen bulbs will also affect their life. For example, high temperature, humidity or corrosive environment will accelerate the corrosion and aging of tungsten wires. Therefore, when using halogen bulbs, try to keep their working environment dry, clean and at a suitable temperature.
More details of tungsten wires, please visit website: http://tungsten.com.cn/tungsten-wires.html
Please contact CHINATUNGSTEN for inquiry and order of tungsten needles:
Email: sales@chinatungsten.com
Tel.: +86 592 5129595
