The fiber laser cutting machine must have the help of auxiliary gas when processing! Generally, we use three kinds of auxiliary gases, namely oxygen, nitrogen and air. Of course, the higher the purity of the gas, the better the cutting quality. If conditions permit, air-assisted cutting of optical fiber laser cutting machine is a low-cost way. However, there will often be water mist on the protective lens during the use of air-assisted cutting. Not only is the cutting speed very slow, but also the cutting quality is poor. Why?

What is the reason for water mist on the protective lens of the fiber laser cutting machine?

First of all, let's popularize the role of auxiliary gas:

1. In order to blow away the residual slag and achieve good cutting effect.

2. Use gas to blow away the metal slag while protecting the lens to prevent the slag from sticking to the lens and affecting the cutting quality.

3. It can effectively achieve the effect of smooth cutting surface without burr and slag, which is fine cutting.

4. It can react with the material and increase the cutting speed. For example, using oxygen can achieve the effect of combustion support.

Therefore, in order to achieve better cutting effect, the requirements for auxiliary gas are higher! Although air can be used as auxiliary gas, because the air contains a large amount of impurities such as water and oil, if it is not treated, it will cause lens pollution, the cutting head will not work stably, so that the cutting effect and quality are not up to standard, and more serious, it will cause lens cracking. Therefore, when using air cutting, it is necessary to equip the fiber laser cutting machine with a cold dryer, which can solve this problem. The cold dryer can forcibly cool the compressed air below the required dew point temperature, so as to condense a large amount of water vapor and oil mist contained in it into liquid droplets, which are separated by gas and liquid, and discharged from the machine by the drainer, which not only makes the compressed air dry, but also cleaner, so that the optical fiber laser cutter will not have the phenomenon of lens condensation during the cutting process.