There are many types of wear parts on the laser cutting machine. The following describes the protection of the lens by the laser cutting machine.
As the name suggests, the protective lens is used to prevent the collector lens from being damaged by dust and slag splashes, it is a necessity not only for laser cutting machines, but also for other laser equipment such as laser marking, laser welding and laser engraving. Therefore, the market for protective lenses is very large.
The price of protective goggles on the market ranges from tens of dollars to hundreds of dollars, and their quality varies, and of course it is not uncommon for them to fail. Due to high laser loss, frequent breakage of protective lenses and unstable product quality, wrong lens selection can bring huge losses to the company. Therefore, choosing a suitable protective lens is a very important issue.
Three steps to choose a protective lens for a laser machine.
(1) The shape and size match, which is easy to understand.
(2) Materials, according to different laser outputs, considering the cost of use, K9 and fused silica can be selected. In the actual application process, these two materials are divided into multiple grades. Professional manufacturers, customers can choose appropriate specifications according to actual needs .
(3) According to the use of the coating, the use of the laser transmission film, different coating process parameters, and the use environment.
The protective lens of the laser cutting machine is a wearing part. In order to improve its operation rate and reduce the production cost, the protective lens can be cleaned regularly to achieve the purpose of repeated use. The following are the three cleaning steps summarized by the high-energy laser:
1. The material of the protective mirror is ZnSe (zinc arsenic oxide), which is relatively brittle and easy to fall, so pay attention when disassembling and assembling: do not use it too hard, and do not collide with hard objects. There is a permeable film on the surface, which is afraid of pollution, moisture, oil and scratches. Therefore, it is necessary to provide a dry, degreasing air supply while working, and to avoid direct manipulation of the protective lenses of the laser cutting machine by hand, as skin oils can cause permanent damage to the lens surface. Instead, they can operate with gloves or their special suits. For smaller lenses, it is easier to use optical tweezers or vacuum tweezers. Whichever way you hold your laser cutter's protective lens, make sure you only hold it along non-optical surfaces, such as the frosted edge of a mirrored card.
2. Generally speaking, the protective lens of the laser cutting machine should be checked for its condition before use and before and after cleaning. Because contamination and surface defects are usually relatively small, a magnifying glass is often required to inspect the lens. In addition to magnifying devices, it is sometimes necessary to illuminate optical surfaces with intense light to increase the specular intensity of surface contaminants and defects, making them easier to spot.
3. When cleaning the protective lens of the laser cutting machine, be sure to use clean wipes and optical grade solvents to prevent damage by other contaminants. Wipes should be dampened with a suitable solvent and should not be used dry. For reasons of softness, wipes can be wiped with a cotton web or other applicator such as cotton balls, lens tissue, or cotton swabs.
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