• Categories:IR Lamp Technologies & News
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• Time of issue:2024-03-29
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(Summary description)Practice has proven that quartz infrared heaters are superior to other traditional heating sources, such as magnesium peroxide tubes, silicon carbide plates, direct heating resistance strips, steam, gas, ceramics, or other metal heaters. The advantage of quartz infrared heater is that it can quickly heat up, release a large amount of infrared radiation, and accurately use it in the production process of the heated object.



For a successful heating process, matching the infrared radiator with product characteristics such as wavelength, shape, color, thickness, power output, etc. is crucial. Radiation that precisely matches the absorption characteristics of the product can be quickly converted into thermal energy on the product. Compared with hot air heating, quartz infrared heaters have lower energy consumption, higher production efficiency, smaller footprint, and more obvious heating effects. Such as infrared preheating and tenter setting processes in continuous pad dyeing.

 



 

The heating, drying, and shaping heating of various fabrics need to follow the principle of optimal spectral matching.

 

The amount of radiation reaching the fabric is not equal to the actual heat absorbed by the fabric, because some is reflected and some is transmitted through the fabric. Therefore, the more the fabric absorbs and the less it reflects and transmits, the higher the absorption rate. Different textiles, when the radiation wavelength is 3μm, all materials show strong absorption bands, and the reflection at the wavelength of 1.3μm is as high as 70%. The transmission intensity of infrared light with different dominant wavelengths in a single layer of fabric increases with the increase of the dominant wavelength, and the transmission ability weakens to varying degrees. Factors that affect the transmittance include the square meter weight, tissue structure, coverage coefficient and fiber material of the fabric.

 

For infrared radiation heating, the basic particles that constitute matter, electrons, atoms or molecules, are constantly moving - vibrating or rotating - even in the ground state. These movements have their own natural frequencies. If the vibration number transmitted by infrared rays is equal to the natural frequency of the basic particle, a situation similar to the resonance motion in vibrationology will occur. The particle will absorb the infrared energy and further intensify the motion.

 

That is to say, the molecules and atoms of substances that are sensitive to infrared rays can absorb infrared rays that are equivalent to their own natural frequencies. Not only do they undergo transitions in rotational energy levels, they also expand the range of various motions centered on the equilibrium position. From a micro perspective, particle motion is enhanced and the internal energy of particles increases; From a macro perspective, it refers to the increase in temperature of an object. If the frequency difference between the two is large, the infrared ray will not be absorbed but may be reflected or passed through. It can be seen that the absorption rate of radiant heat by fabrics is closely related to the spectrum, and a reasonable effective spectrum section of infrared heating radiation should be established to achieve the best match with heated products.

 

For fabrics or other heated materials, it is required that the infrared energy will cause strong resonance absorption and be converted into heat as soon as it enters the surface layer, then it is called effective better matching.