Why is UVLED curing more popular than mercury lamp curing? What is the difference between uvled and mercury lamp?read count [1260] release time：2021-12-16 15:38:00
Why uvled Is curing more popular than mercury lamp curing? uvled What is the difference between it and mercury lamp? uvled Curing and mercury lamp curing actually use the ultraviolet light emitted by the equipment to convert the corresponding uv The material changes from a liquid to a solid state. But because they emit light in different ways, they are differentiated.
Lighting method
uvled It is through the light-emitting diode that the energy is released through the recombination of electrons and holes to emit light, and led The wavelength of light emitted is related to the inorganic semiconductor material used in the light-emitting diode. Materials that emit ultraviolet light are diamond, aluminum nitride, aluminum gallium nitride, etc.
The high-pressure mercury lamp is the standard lamp for UV curing. Electric current passes through high-pressure mercury vapor to ionize and excite it, forming a discharge. The collision between electrons, atoms and ions in the tube emits light.
Service life
uvled Under normal use, the lifespan can reach20000For more than an hour, the light decay rate is slow, and it can be turned on and off continuously and instantaneously without affecting the lifespan.
The normal service life of a mercury lamp is800~3000hours, it takes some time from startup to normal operation, usually4~10minutes, and after the high-pressure mercury lamp goes out, it cannot be started immediately and needs to be cooled down.5~10It will light up again after a few minutes.
thermal radiation
uvled Under normal operation, the surface temperature rise of the irradiated object is usually5°C Below, heat-sensitive materials can also be cured normally.
Due to its wide spectrum range, mercury lamps will emit infrared rays and the temperature of the irradiated items will rise.60~90°C，Applicable to all bands uv Glues and heat-cured glues.
Environmental friendly
uvled The curing equipment uses semiconductor light emitting, which causes no pollution to the environment.
There is mercury inside the mercury lamp, which makes its use, waste disposal, and transportation very troublesome. If it is not handled properly, it will pollute the environment.
Energy consumption
uvled The electro-optical conversion efficiency is high and can be lit only when working, which greatly saves energy consumption. However, the wavelength band is single, so it is difficult to detect different wavelength bands. uv Materials should use different bands uvled equipment.
Regardless of whether the mercury lamp is effectively irradiated or not, it needs to be preheated and needs to be continuously lit, and the power is always consumed.
Why uvled Curing is more popular than mercury lamp curing precisely because of their differences in service life, thermal radiation, environmental protection, energy consumption, etc. uvled Relatively speaking, it is better than mercury lamps in all aspects, so it is used in many places nowadays. uvled Curing was performed instead of mercury lamp curing.
