Ruby quartz infrared heating tube: An infrared heating innovation with high penetration and stability
I. Core Features: Technological Breakthrough in ruby coating
The core competitiveness of the ruby quartz infrared heating tube lies in its special ruby coating on the surface of the tube - a uniform coating with a thickness of 5-8μm is formed by fusing nano-scale chromium oxide (Cr₂O₃) with quartz glass, presenting a unique deep red color. This coating not only endows the heating tube with excellent temperature resistance (long-term resistance to 800℃, instantaneous resistance to 1000℃), but also precisely filters out noise, concentrating the infrared radiation wavelength in the short-wave region of 3-5μm. The radiation intensity is 35% higher than that of ordinary transparent quartz tubes, and the absorption rate for dark objects is over 90%.
Compared with traditional transparent quartz tubes, the ruby coating can reduce the visible light output by 30% and lower light pollution. At the same time, the hardness of the pipe body is increased to 7 on the Mohs scale, and the impact resistance is enhanced by 40%, making it more wear-resistant in industrial environments.
Ii. Structural Analysis: Precise Synergy of Materials and Processes
1. Multi-layer composite structure
Base material: Select dehydroxylated quartz glass tubes with a purity of 99.99%, with a tube wall thickness of 2.5-4mm. The light transmittance is optimized to 94% for the 3-5μm infrared band, avoiding the absorption loss of infrared radiation by hydroxyl groups (OH⁻).
Heating element: Made of high-purity tungsten wire (with a tungsten content of 99.95%) through the "double helix winding" process, it has a diameter of 0.15-0.3mm, with a heating uniformity error of no more than 2%. Combined with the "hydrogen bromide - nitrogen" mixed gas inside the tube (in a ratio of 1:10), it forms a stable tungsten-halogen cycle, extending the service life.
Coating process: Chromium oxide is uniformly adhered to the outer wall of the quartz tube through magnetron sputtering technology. After sintering at 800℃ for 4 hours, the bonding strength between the coating and the substrate reaches 6N/cm². There is no peeling or discoloration after repeated cold and heat shocks (-30℃ to 800℃).
2. Principle of infrared radiation regulation
The chromium oxide crystals in the ruby coating have a strong absorption effect on the ultraviolet band below 2μm and the far-infrared band above 8μm, allowing only the efficient short-wave infrared of 3-5μm to pass through. This "band screening" characteristic makes the energy more concentrated: Under the same power, the heating speed of black plastic is 25% faster than that of transparent quartz tubes, and the heating efficiency of dark metals is increased by 20%. It is particularly suitable for directional heating of materials of specific colors.
Iii. Performance Advantages: Surpassing the traditional heating experience
1. Highly efficient heat collection and strong penetration
Heating rate: The rated temperature (500-800℃) can be reached within 2-4 seconds after power-on, and the surface temperature of a 1mm thick black PVC sheet can be raised to 150℃ within 10 seconds, which is 30% faster than that of ordinary infrared tubes.
Energy utilization rate: The thermal conversion efficiency is as high as 88%. Due to the directional radiation characteristics of the coating, the concentration rate of heat in the target area increases by 40%, and the heat loss in the non-heated area is reduced by 50%.
Penetration depth: 3-5μm short-wave infrared can penetrate the surface layer of dark objects by 1-3mm, achieving "from the inside out" heating and avoiding the problem of the surface being scorched while the inside remains uncooked.
2. Stable and durable, environmentally compatible
Service life: Under normal working conditions, it can reach 5,000 to 8,000 hours. In a constant temperature test at 600℃, after continuous operation for 1,500 hours, the power attenuation is only 4%, far exceeding the 8% attenuation rate of ordinary quartz tubes.
Corrosion resistance: The ruby coating has a 50% higher resistance to acids, alkalis (except hydrofluoric acid), and organic solvents than ordinary quartz tubes. After continuous use for 6 months in an environment with 90% humidity, the insulation resistance remains ≥100MΩ.
Safety design: Surface temperature ≤700℃ (anti-scalding), optional built-in temperature control probe (accuracy ±1℃), supports linkage with PLC system to achieve over-temperature protection, complies with UL 1030 safety standard.
With 20 years experience, Hongtai Alloy is your trusted source for quality ruby quartz tube halogen heating lamp as one of the leading suppliers of various heaters in China. Providing you with the most competitive price, we welcome you to buy the heater from our factory.
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