Why do the lenses of fiber laser cutting machine fog? There are several types of auxiliary gases for laser cutting machines, and users will choose their own cutting auxiliary gases according to their cutting needs. Oxygen, nitrogen, etc. require a certain cost, while air is free. Therefore, many users use air compressors in the laser cutting process to assist metal cutting with compressed air. So the question is:

Air is mainly composed of nitrogen and oxygen, and also contains a small amount of water vapor. Why do the lenses of fiber laser cutting machines fog? This is inextricably linked to compressed air.

The laser emitted by the focusing mirror forms a light spot at a certain point on the material. The material melts instantly due to the high-density laser energy. At this time, the compressed air is blown out through the pipe to blow away the molten liquid and complete the metal cutting action. In this process, the compressed air plays the role of blowing away the drive, and at the same time plays the role of cleaning and cooling the lens. At this time, the external light path of the laser cutting machine is filled with compressed air, and the lens is cut at a certain temperature. Under a certain temperature difference, the water vapor in the air condenses and causes the lens to fog. What's more serious is that if water vapor condenses on the focusing lens through the blowpipe, it will damage the focusing lens or cause poor cutting quality.

Compressed air is widely used in today's laser cutting production, but compressed air contains a lot of water, which is very harmful. It will not only affect the operating efficiency of gas equipment, but also affect the processing technology. Therefore, when users use compressed air for cutting, it is necessary to equip a dryer to ensure that there is no liquid water at the outlet of the compressed air. But not all dryers can guarantee the requirements of laser cutting gas. When choosing a dryer, you must consider its adsorption of water vapor and impurity particles to ensure that clean compressed air is obtained, so as to meet the requirements of laser cutting for compressed air quality and ensure high-precision and high-quality laser cutting effects.