During the cutting process of a laser cutting machine, the intelligent operating system controls the equipment to operate according to the issued instructions. The laser gathers laser energy and outputs it to the laser cutting head. The laser cutting head focuses the energy emitted by the laser beam to form a laser beam on the surface of the workpiece being cut, causing it to melt or burn. Then, the cutting gas is used to blow away the slag, and the cutting head moves on the surface of the workpiece, forming a cutting seam and separating the workpiece.

The laser cutting head directly affects the processing performance and quality of the laser cutting machine. Due to the high cost of the laser cutting head, when using the laser cutting machine for processing, in order to protect the internal optical path and core components of the laser cutting head, especially expensive components such as collimation and focusing lenses, protective lenses will be installed on the excitation cutting head to block cutting dust and splashes.

If the protective lens frequently burns out, it is necessary to pay attention to this situation, determine the cause of the frequent burning of the protective lens, and determine whether it is a quality issue or maintenance issue with the protective lens. Next, the editor will introduce several reasons for the frequent burning of the protective mirror under the laser head:

1. The blowing delay is too small, causing the laser to exit earlier than the gas, and the blowing parameters within the global parameters are delayed, too small, or zero. To solve this problem, it is necessary to modify the first point blowing, air exchange, and air switch delay. It is recommended to set it to 200-500 milliseconds. Increasing the blowing delay, paying attention to adjusting the focal length during cutting, the thickness of the sheet to be cut, and the stability of the air pressure all have a certain impact on the lens.

2. There is no set perforation process, it is recommended to adjust the perforation process by more than 1mm. The number of perforations during the corresponding time should be noted, because the higher the output frequency, the more damage the lens is caused by perforation sputtering. Therefore, before perforation, the time should be set. Generally, at 500Hz, the continuous wave should not exceed 150.

3. The internal pollution of the gas pipeline leads to cutting pollution. It is recommended to clean the gas pipeline in a timely manner.

4. For lens protection issues, it is recommended to use original protective lenses.

5. Internal protective mirror contamination. Remember to dust off when completing work every day. Dust prevention should be done meticulously, and be careful when cleaning, because the lenses are afraid of falling or touching. Even when replacing with new lenses, dust removal should be done first.

In addition, the cleanliness of the protective lens is also a key factor in determining the long-lasting use of the protective lens. The cleanliness of the protective lens directly affects the processing performance and quality of the laser cutting machine output. If the lens is dirty, it not only affects the cutting effect and efficiency, but also further causes the internal components of the cutting head and the laser output head to burn. Therefore, it is necessary to first use protective lenses with good materials, high light transmittance, and low thermal expansion coefficient. When the lens is dirty during the processing, it needs to be cleaned or replaced. While checking the lenses, don't forget to check whether the air compressor dryer is running normally every day.