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How to choose the cutting machine lens in laser processing?

  There are many kinds of wearing parts of laser cutting machine, today, here I mainly to introduce the laser cutting machine in the protection of the lens.
  Protection of the lens As the name suggests is to prevent dust and slag splash damage to the focus lens, which in addition to the laser cutting machine used to that, in other laser equipment is also necessary, including laser marking, laser welding and laser engraving The Visible, the application of the lens protection market is very large.
  The price of the lens to protect the market are ranging from tens of dollars to several hundred dollars the price difference is great, the quality is not the same, of course, shoddy is also common. If the lens selection will cause improper laser loss, frequent damage to protect the lens, product quality is not stable, causing serious losses to the enterprise. Therefore, the choice of the appropriate protection of the lens is a very worthy of attention.

  Choose the laser cutting machine to protect the lens three steps:
  1) size matching, this easy to understand;
  2) Material, according to different laser power, consider the use of cost, you can choose K9, quartz, its practical application process, professional manufacturers will be divided into two categories of materials, customers can choose according to the actual needs of the corresponding specifications.
  3) coating, laser anti-reflective film, according to the use of the environment using different coating technical parameters.
  Although the protection of laser cutting machine lenses are vulnerable parts, but in order to improve its utilization, reduce production costs, you can clean the lens by regular cleaning, to achieve the purpose of re-use, the following are high energy laser summary of the three cleaning steps:
  1. Protection of the lens material for the ZnSe (zinc arsenic), more brittle, afraid to fall; in the disassembly should pay attention: not too hard, and can not collide with the hard objects. The surface of the anti-reflective film, fear of pollution, fear of wet, afraid of oily, afraid of scratch; it is required to provide dry, oil to the work of the air, do not directly handle the laser cutting machine lens lens, Will have a permanent damage to the lens surface. On the contrary, you can carry gloves and their special sets of equipment to operate, for smaller lenses, the use of optical tweezers or vacuum tweezers will be more convenient. No matter what method to clamp laser cutting machine to protect the lens, can only be held along the non-optical surface, such as mirror edge edge of the matte edge.
  2. Under normal circumstances, before and after use and cleaning need to check the laser cutting machine to protect the lens of the situation. Because most of the contaminants and surface defects are smaller in size, we often need to use the magnifying device when checking the lens. In addition to amplifying the equipment, sometimes we also need to use a bunch of relatively bright light to illuminate the optical surface, enhance the surface contaminants and defects of the specular intensity, so that you can more easily detect pollutants and defects.
  3. When cleaning a laser cutter to protect the lens, often use clean wipes and optical grade solvents to prevent damage by other contaminants. Wipe the paper must be wet with a suitable solvent, do not dry use. In the case of softness, the available wipes are cotton Webril wipes or cotton applicators such as cotton balls, lens paper, and cotton swabs.