Laser cutting machinery9/10/2023 ![]() Fast axial flow uses a mixture of carbon dioxide, helium and nitrogen circulated at a high velocity by a turbine or blower. Common variants of CO 2 laser include fast axial flow, slow axial flow, transverse flow, and slab. The RF method has external electrodes and thereby avoids problems related to electrode erosion and plating of the electrode material on glassware and optics that can occur with DC, which uses an electrode inside the cavity.Īnother factor that can affect laser performance is the type of gas flow. This process can be broken down into three main techniques - CO 2 laser (for cutting, boring, and engraving), and neodymium (Nd) and neodymium yttrium-aluminium-garnet (Nd:YAG), which are identical in style, with Nd being used for high energy, low repetition boring and Nd:YAG used for very high-power boring and engraving.Īll types of lasers can be used for welding.ĬO 2 lasers involve the passing of a current through a gas mix (DC-excited) or, more popularly these days, using the newer technique of radio frequency energy (RF-excited). Where the laser cutting process needs to start anywhere other than the edge of the material, a piercing process is used, whereby a high power pulsed laser makes a hole in the material, for example taking 5-15 seconds to burn through a 0.5-inch-thick (13 mm) stainless steel sheet. This light is focused at the work area by mirrors or fibre optics that direct the beam through a lens which intensifies it.Īt its narrowest point, a laser beam is typically under 0.0125 inches (0.32 mm) in diameter, but kerf widths as small as 0.004 inches (0.10mm) are possible depending on material thickness. The lasing material is amplified by being reflected internally via a partial mirror until its energy is enough for it to escape as a stream of coherent monochromatic light. The laser beam is created by the stimulation of lasing materials through electrical discharges or lamps inside a closed container. The focused laser beam burns, melts, vaporises or is blown away by a jet of gas to leave a high-quality surface finished edge. Typically, the process uses a motion control system to follow a CNC or G-code of the pattern that is to be cut onto the material. Laser cutting uses a high-power laser which is directed through optics and computer numerical control (CNC) to direct the beam or material. Click here to see our latest technical engineering podcasts on YouTube. This article is one of a series of TWI frequently asked questions (FAQs). Laser cutting is a process that uses a laser to cut different materials for both industrial and more artistic applications, such as etching. National Structural Integrity Research Centre.Structural Integrity Research Foundation.Our MOVit automation systems improve process reliability and are offered as modular units. ![]() We help you identify the right machine for your needs and can optimize its performance with a full suite of CADMAN® software for offline programming and real-time process management. For tube cutting, there’s the TL series, including the feature-rich TL 8525. We also offer XXL cutting with Taurus, a groundbreaking modular design that starts at a 10-meter bed size and can be expanded in increments of four meters up to a bed length of 42 meters. Our portfolio is diverse, offering the “no frills” simplicity of the YSD LaserONE, cost-efficiency of the Puma, and all-around capability of the Phoenix FL series. High-power laser sources and optical systems and advances in cutting head design have improved piercing times, cutting speeds and cut performance in materials of all types and thicknesses.įor flat sheet or tube cutting, there is an LVD laser cutting machine to meet your needs. Laser cutting flexibility for flat sheet or tubeįiber laser is the most sought-after solid-state laser and dominates the market for metal laser cutting equipment as the technology becomes more capable and flexible.
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