The infrared lamp tube is constructed by projecting a tungsten wire into an inflated quartz tube. The tungsten wire generates heat under an alternating voltage and heats the gas in the quartz tube, thereby generating infrared radiation. Quartz near-infrared and far-infrared lamps use transparent or translucent quartz glass as the lamp tube casing to produce near-infrared or far-infrared radiation lines. Heidelberg dual-tube near-infrared heating lamps can be used on Heidelberg presses.
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