Reasons for Some Quartz Infrared Heating Lamps Turn Black or White
Aug 29, 2022
Reasons for Some Quartz Infrared Heating Lamps Turn Black or White
The Quartz Glass Tube Electric Infrared Heating Lampis an industrial heating emittersthat uses the infrared principle.It has the characteristics of high quality, high thermal efficiency, high power density,rapid heating,power saving,and long life.Near infrared Heatersuse transparent quartz glass as the tube shell to generate infrared radiation spectrum,includes Short Wave/Medium Wave/Long Wave,and the radiation intensity of different types of infrared rays with the same power The intensity is different depending on the wavelength.
As the quartz tube material is hard and brittle,low strength, its difficult to process,during production and used for a long time,some IR Heaters quartz tube or filament will turn to yellow, blue, white and black lamps.If your lamp comes out with these situations,it means that your lamp has the following problems.
1,Quartz Tube Damaged and Leaking
As the quartz glass tube damaged and leaking,the tungsten filament in the lamp tube loses gas protection at high temperatures and reacts with oxygen in the air to produce different impurities,lead to the tube turn to white or blue.
2,Filament Contains Impurities
The cold end of the Infrared Lamp Tube turns into black mainly because the impurities are not completely removed when the filament is formed, or the surface of the filament is contaminated during the assembly process,these impurities will volatilize when the filament is heated and adsorbed on the inner wall of the lamp, thus making the lamp tube black.
3,Protective Gas not Enough
The overall blackening of the ElectricInfrared Heaters tube is mainly because protective gas not enough after long time using,as the high temperature heating ,the evaporation rate of the filament is greater than the rate of tungsten halide reduction and forms a black circle on the tube.
In order to avoid the Quartz Glass Tube IR Heating Lamp turn to whitening and blackening,the following points need to be paid attention to in the daily production processing:
A、During the filament cleaning process, try to remove the graphite layer on the surface;
B、In the process of filament shaping, heat thoroughly to completely remove surface impurities;
C、During the filament assembly process, the countertop should be kept clean, and the assembler should wear gloves to prevent contamination of the filament surface;
D、The lamp tube is fully heated during the exhaust process to remove the residual air and moisture inside the lamp tube;
E、The lamp should be handled with care during the transportation process, to avoid collision, causing the lamp to crack and cause air leakage;
F、 Be careful during the installation of the lamp to prevent excessive force from causing air leakage;
G、The protective gas in the lamp tube should be selected according to the filament temperature and the space of the lamp tube.