How to select the focusing lens of laser cutting machine? When optical fiber laser cutting machine is used to cut metal plates with different thicknesses, in addition to selecting equipment with appropriate power, attention must be paid to the selection of focusing lens. Some people may be a little strange. Is the optical fiber laser cutting machine ready for processing and use? Next, I will explain to you! There are many kinds of consumables for laser cutting machines. Today, I mainly introduce the protective mirror in the laser cutting machine. As the name implies, the protective mirror is used to prevent dust and slag splashing from damaging the focusing mirror. It is not only used for laser cutting machines, but also for other laser equipment, including laser marking machines and laser welding machines.
The price of protective lenses on the market varies from tens to hundreds of yuan. The price varies greatly, and the quality is also different. Of course, a second charge is not uncommon. If incorrect lens is selected, it will cause large laser loss, frequent damage to the protective mirror and unstable product quality, which will cause serious losses to the enterprise. Therefore, it is very important to choose the appropriate protective glasses.
First, there are three steps to select the protective mirror of the laser cutting machine:
1. The shape and size match, which is easy to understand;
2. In terms of materials, K9 and quartz can be selected according to different laser power and considering the use cost. In practical application, professional manufacturers divide these two types of materials into several grades. Customers can choose the corresponding specifications according to their actual needs.
3. Coating, laser antireflection coating, using different coating technical parameters according to the application environment. Secondly, although the protective mirror of the laser cutting machine is a vulnerable part, in order to improve its utilization and reduce production costs, the protective mirror can be cleaned regularly to achieve the purpose of repeated use.
How to select the focusing lens of laser cutting machine?
How to clean the protective mirror of laser cutting machine:
1. The protective lens material is ZnSe (arsenic zinc), which is brittle and not easy to drop; Attention shall be paid during disassembly: do not use too much force or collide with hard objects. Anti reflective coating on the surface can avoid pollution, moisture, greasy and scratch. Therefore, it is necessary to provide dry and degreased air during work. Do not directly use the laser cutting machine to protect the lens of the skin, because the grease on the skin will permanently damage the lens surface. Instead, you can work with gloves and their special kit. For smaller lenses, it is more convenient to use optical tweezers or vacuum tweezers. No matter which method is used to clamp the laser cutting machine to protect the lens, it can only be clamped along the non optical surface,
2. Under normal circumstances, it is necessary to check the protection of the lens through the laser cutting machine before use, before and after cleaning. Because the size and surface defects of most contaminants are relatively small, magnifying glasses are often used when checking lenses. In addition to the amplification equipment, sometimes we also need to irradiate the optical surface with relatively bright light to enhance the specular reflection intensity of surface contaminants and defects, so that contaminants and defects can be found more easily.
3. When cleaning the laser cutting machine to protect the lens, always use clean wiping paper and optical grade solvent to prevent damage from other pollutants. Wiping paper must be soaked with appropriate solvent and cannot be used dry. Considering the softness, the available wiping paper is pure cotton wiping paper or cotton ball, lens paper, cotton swab and other applicators.