75.5mm 120v 490w twin tube half gold coated halogen heat lamps
Semi-gold-plated halogen infrared heating tube is specially treated on the basis of ordinary halogen infrared heating tube, that is, a gold layer is plated on part of the surface of the heating tube. This design gives it some unique performance and advantages. The following is a detailed introduction:
1. Working principle
The working principle of semi-gold-plated halogen infrared heating tube is similar to that of ordinary halogen infrared heating tube. The filament is heated by electric current to make the filament heat up and radiate infrared rays. The halogen gas around the filament protects the filament and promotes heat transfer. The semi-gold-plated surface treatment method mainly uses the special physical properties of gold to change the radiation characteristics and heat transfer efficiency of the heating tube.
2. Structural characteristics
Gold layer distribution: Semi-gold plating means that the entire surface of the heating tube is not covered with a gold layer, but only part of the area is plated with gold. Usually, the gold-plated part is determined according to the heat demand and radiation direction of the heating tube in the specific application. For example, in some occasions where directional radiation heat is required, the gold layer will be plated on the side of the heating tube facing the target object.
Combination with quartz tube: The gold layer is generally plated on the outer surface of the quartz tube of the heating tube. The quartz tube itself has good high temperature resistance and infrared transmittance. The addition of the gold layer further optimizes its thermal radiation performance, allowing the heating tube to radiate infrared rays more effectively to the object to be heated.
3. Performance Advantages
(1) Enhanced radiation performance
Improved directional radiation capability: Gold has the characteristics of high reflectivity and low absorptivity. The semi-gold-plated surface can reflect and radiate the infrared rays emitted by the heating tube more concentratedly in a specific direction, thereby improving the efficiency of heat transfer in the target direction. In some applications that require precise heating of specific areas, such as local drying and heat treatment of small parts, this directional radiation capability can make the heat more focused, reduce the thermal impact on the surrounding environment, and improve energy utilization efficiency.
Enhanced radiation intensity: The gold-plated layer can enhance the infrared radiation intensity of the heating tube, so that the heated object can absorb heat faster, thereby accelerating the heating speed. For example, in some rapid drying processes that require high heating speed, the use of semi-gold-plated halogen infrared heating tubes can significantly shorten the drying time and improve production efficiency.
(2) Improved heat transfer efficiency
Reduced heat loss: The presence of the gold layer can reduce heat loss on the surface of the heating tube to a certain extent. Due to the good thermal conductivity of gold, it can transfer the heat generated by the filament to the surface of the quartz tube more quickly and transfer it out through infrared radiation, while reducing the conduction and convection of heat to the surrounding air, thereby improving the overall heat transfer efficiency of the heating tube.
Optimized temperature distribution: The semi-gold-plated design can adjust the temperature distribution on the surface of the heating tube as needed, so that the heat is more evenly distributed within the heating range corresponding to the gold-plated area. This helps to improve the temperature uniformity of the heated object and reduce product quality problems caused by uneven temperature. For example, in the stretching process of plastic film, the film can be processed under a more uniform temperature field, improving the quality and performance of the film.
