laser cutting process

Copyright © 2021 TWI Ltd. All rights reserved. Abstract Laser cutting is an energy based unconventional process is an advanced machining process. However, for the same reason, direct diode lasers are currently of lower beam quality compared to fibre lasers. This means that the beam for a fiber laser is roughly 100 times greater than that of a C02 equivalent when it comes to intensity. This system usually takes the form of a back reflection system that can detect if too much laser radiation is being reflected back through the optics. Generation of the laser beam involves stimulating a lasing material by electrical discharges or lamps within a closed container. However, this type of laser machine is made up from expensive pump diodes, which can be costly when needed to be replaced; typically, after 8,000 – 15,000 hours of use. In addition to exerting mechanical force on the molten material, this creates an exothermic reaction which increases the energy input to the process. ","acceptedAnswer":{"@type":"Answer","text":"A laser machine is great at cutting a huge variety of materials. There are three main types of laser cutting: C02 cutting is achieved using a gas laser. To allow comparison between lasers with different beam diameters we therefore use a factor called the focus f-number, which is the focal length, F, divided by the incoming raw beam diameter, D. The requirements for cutting are as follows: a) high power density and therefore small focused spot size. Laser cutting works by having focused and precise laser beam run through the material that you are looking to cut. Engraving is the process of removing a layer of a material to leave an engraving below. This process also has many similarities to the drilling and engraving processes. The laser focal spot diameter and the depth of focus is dependent on the raw laser beam diameter on the lens and the focal length of the lens. Because these two requirements are in conflict with each other, a compromise must be made. ","acceptedAnswer":{"@type":"Answer","text":"The process works by having a focused and precise laser beam run through the material that you are looking to cut, delivering an accurate and smooth finish. The former involves the creation of thru-holes in a material or dents, like an engraving used in the later process. The gas in question is a carbon dioxide mixture which has been electrically stimulated. For a constant raw laser beam diameter, decrease in the focal length lens of the focusing lens results in a smaller focal spot diameter and depth of focus. Nowadays most of industrial sheet metal laser cutting is carried out using two types of lasers: CO2 and fibre. CO2 lasers typically emit at a wavelength of 10.6μm. This is the process of cutting a shape to create smaller sizes, pieces, or more complex shapes. This means that they are useful for both metals and non-metals.\n\nHowever, this type of laser machine is made up from expensive pump diodes, which can be costly when needed to be replaced; typically, after 8,000 – 15,000 hours of use. This can be for small & fine materials or materials with a much greater level of thickness (e.g. 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. The laser essentially melts the material away that it is run over, so is more like melting than cutting. This will often automatically stop the laser, before any major damage is caused. What Is Laser Cutting? This allows copper, brass, and aluminium to be cut without problems. The process works by having a focused and precise laser beam run through the material that you are looking to cut, delivering an accurate and smooth finish. Mirrors or fiber optics are typically used to direct the coherent lightto a lens, which focuses the light at the work zone. ","acceptedAnswer":{"@type":"Answer","text":"There are a huge number of benefits over other more conventional forms of cutting:\n\nIt’s a non-contact process, and so there is minimal damage caused to the material you are working with and associated moving parts\nHas low maintenance costs and only needs inexpensive replacement parts\nThe process helps to dramatically reduce material wastage\nOne laser machine is capable of working with multiple materials and applications\nIt is much safer using than other processes as the beam is enclosed within a light box\nYou are offered total control with the beam intensity, heat output and duration when undertaking a laser cutting process, making this a highly reliable process"}},{"@type":"Question","name":"","acceptedAnswer":{"@type":"Answer","text":""}}]}. ","acceptedAnswer":{"@type":"Answer","text":"As the name may suggest, this is the process of cutting a material using a laser beam. This process is suitable for a wide range of materials, including metal, plastic, wood and glass. In 1979, the Italian company Prima Industrie invented the first 3D laser-cutting process with a 5 axes rotation system. It has many features when applied in the cutting process. It also means that they can work with both metal and non-metal materials.\n\nA fiber laser is the most useful of the three types. In doing so, the oxygen is blown into the kerf at pressures of up to 6 bar. Like the crystal method above, fiber lasers belong to the solid state group too. A beam is created using a ‘seed laser’, which is then amplified using glass fibers and pump diodes. Laser cutting is a highly accurate process, thanks to this high level of control that you are offered. There are many state of the art laser machines on the market for cutting purposes, which can be used to cut metals, woods and engineered woods. Many of the laser-based processes have similar benefits and applications, and as one cutting laser machine can perform multiple processes, it can be hard knowing exactly which one could be right for your business. As a general rule the addition of alloying elements reduces the reflectivity of aluminium to the laser, so pure aluminium is harder to process than a more traditional 5000 series alloy. Most laser cutting machines use a laser beam aligned normal to a flat sheet of material. On mild steel, stainless steel, and aluminum plate, the laser cutting process is highly accurate, yields excellent cut quality, has a very small kerf width and small heat affect zone, and makes it possible to cut very intricate shapes and small holes. Such a laser is electrically pumped using an electric discharge. Manufacturers have sought to make the manufacturing process easier and more efficient. Fibre lasers are a member of a family called ‘solid-state lasers’. FAQs (Frequently Asked Questions) for laser cutting, The various types and techniques of laser cutting, Wood – although care in the laser cutting process is needed to avoid scorch/burn marks, Reflective metals – notoriously difficult to work with, lasers can be used to, It’s a non-contact process, and so there is minimal damage caused to the material you are working with and associated moving parts, Has low maintenance costs and only needs inexpensive replacement parts, The process helps to dramatically reduce material wastage, One laser cutting machine is capable of working with multiple materials and, It is much safer using than other processes as the beam is enclosed within a light box, You are offered total control with the beam intensity, heat output and duration when undertaking a laser cutting process, making this a. As futuristic as it sounds, laser cutting is a technology that has been with us for decades. Most CO2 laser cutting machines are three-axis systems (X-Y, two-dimensional positioning control with a Z-axis height control). metal sheets). You can control the beam intensity, length and heat output depending on the material you are working with, and can also user a mirror or special lens to further focus the laser beam. The advantages of lacer cutting is less cutting burrs, less deformation and faster cutting speed. A vast range of materials and thickness sizes can be cut with lasers, making it a handy and adaptable process. Using nitrogen or argon gas as cutting gas and the air with 2-20 bar pressure blown through the incision. Other than cutting it, the laser beam can also be used to provide different types of services to a … In reality, changing the lens is avoided and a compromised cutting speed used, unless a specific job has special requirements. These dents and holes are essentially cuts, and you’ll often see a laser machine also being used for drilling and engraving too.\n\nA vast range of materials and thickness sizes can be cut with lasers, making it a handy and adaptable process. Fibre laser sources have the following advantages: Direct diode laser technology is the latest progress in the field of solid-state lasers. Click on the infographic below to view the entire image, as only a thumbnail view is shown on this page. There are also several techniques involved with the laser cutting process, which we have touched on briefly above: The main use for a laser machine, explained extensively in this article. With good, consistent cutting parameters the likelihood of a reflection can be reduced to almost zero, depending on the materials used. The laser beam is then transmitted through an optical fibre where it gets amplified (similar to a conventional laser cavity in CO2 lasers). As the workpiece is not moved, this also means that there is no real limit to sheet weight. This reflection does not come entirely from the sheet surface, but is caused by the formation of a molten pool which can be highly reflective. As the lasing material is stimulated, the beam is reflected internally by means of a partial mirror, until it achieves sufficient energy to escape as a stream of monochromatic coherent light. The crystal used also has a much shorter service life than that of a fiber laser.\n\nFiber laser cutting\nThis type of cutting is completed using a fiber laser, the type we manufacture here at SPI Lasers. 1969: First industrial use in Boeing factories The American company Boeing is the first one to integrate laser-cutting on its production lines. The narrowest part of the focused beam is generally less than 0.0125 inches (0.32 m… The critical factors which govern the efficiency of the process are the focused spot diameter (d) and the depth of focus (L). Fig.1 The laser beam melts the workpiece while the cutting gas blows away the molten material and slag in the incision. A laser cutting machine can also be used for engraving. This means that it can easily cut light materials such as cloth up to tougher metals and gemstones such as diamonds.\n\nYou can use either a pulsed beam or a continuous wave beam, with the former being delivered in short bursts while the latter works continuously. These dents and holes are essentially cuts, and you’ll often see a cutting laser machine also being used for drilling and engraving too. Those used for material processing can generate beams of many kilowatts in power. Drilling is the process of creating dents or thru-holes on or in the surface of a material. The gas in question is a carbon dioxide mixture which has been electrically stimulated. Able to heat, melt and even vaporise material, lasers are seen as the ideal medium for channelling intense but controllable energy. If you enjoyed reading this article, why not register for future articles? We focus solely on state-of-the-art fiber lasers at SPI Lasers. In fact, it would be possible to optimise focal length for each material thickness, but this would involve additional set-up time when changing from one job to another, which would have to be balanced against the increased speed. The depth of focus is the effective distance over which satisfactory cutting can be achieved. The laser cutting process is a non-contact, thermal-based type of process where a laser beam is focused directly on the material, exposing it to the combined heat and pressure, doing the cut. Laser cutting is a fabrication process which employs a focused, high-powered laser beam to cut material into custom shapes and designs. This is the ideal situation optically, but the worse situation mechanically, especially for heavier sheets. This is often an improvement over fixed optics, but still suffers from difficulties with heavier sheet weights. To make this a little easier, we have explored the process in greater detail below, looking at how the process works, the different types of laser cutting, its advantages, and where you’ll see it most commonly used. Thanks to this, slits with a width as small as 0.1mm can be achieved when using the process. The laser cutting process is involved with multiphysical phenomena including initial solid heating, melting and evaporation toward keyhole formation, cutting initiation, kerf formation, and dross ejection. Laser cutting is a type of thermal separation process. The alternative is a 'fixed optic' system where the laser head remains stationary and the workpiece is moved in both X and Y axes. Improvements in accuracy, edge squareness and heat input control means that the laser process is increasingly replacing other profiling cutting techniques, such as plasma and oxy-fuel. For this reason simply spraying the sheet surface with a non-reflective coating will not entirely eliminate the problem. The former involves the creation of thru-holes in a material or dents, like an engraving used in the later process. The third option is known as a 'hybrid' system, where the laser head is moved in one axis and the material moved in the other axis. This type of cutting is completed using a fiber laser, the type we manufacture here at SPI Lasers. For a constant focus length lens, increase in the raw beam diameter also reduces both the spot diameter and the depth of focus. Why lasers are used for cutting. Simply put, laser cutting is the process of using a laser to cut, score, engrave or otherwise alter physical materials. The lens is defined by its focal length, which is the distance from the lens to the focused spot. There are several laser machines now. Aluminium is more reflective than carbon manganese steel or stainless steel and has the potential to cause damage to the laser itself. In solid-state lasers, the beam is generated by a solid medium. They offered an entirely new form of energy which in turn lent itself to uses in manufacturing, medicine and communications. The laser cutting process. We use CO 2 machines. The Laser Cutting Process: Analysis and Applications presents a comprehensive understanding of the laser cutting process and its practical applications. "}},{"@type":"Question","name":"What is the laser cutting process? What is the laser cutting process? A fiber laser is the most useful of the three types. Like the crystal method above, fiber lasers belong to the solid state group too.\n\nA beam is created using a ‘seed laser’, which is then amplified using glass fibers and pump diodes. Initially, the beam pierces the material with a hole at the edge, and then the beam is continued along from there. Initially, the laser is used to pierce the material with a hole at the edge, and then the beam is continued along from there. ","acceptedAnswer":{"@type":"Answer","text":"C02 laser cutting\nC02 cutting is achieved using a gas laser. Fusion cutting is another standard process used in metal cutting, and it can also be used to cut other fusible materials, such as ceramics.. Laser cutting is mainly for cutting the metal sheet and the shape specified by the drawing. The wall-plug efficiency of CO2 lasers is about 10%, which is higher than for most lamp-pumped solid-state lasers (eg ND:YAG lasers), but lower than for many diode-pumped lasers . C02 cutting is most often used on non-metal materials as they have a wavelength of 10.6 micrometres.\n\nCrystal laser cutting\nThis method uses nd:YAG (neodymium-doped yttrium aluminium garnet) and nd:YVO (neodymium-doped yttrium ortho-vanadate) lasers. It all begins from the moment we receive an inquiry and continues through to the shipment of the manufactured parts. With efficient speed and production rates, our lasers are great at working with numerous materials and high output industrial applications. By far the most popular use of lasers is for cutting. The Complete Metal Working Solution. Alongside the benefits listed above, they are often maintenance free, require much cheaper replacement parts, and have a much longer service life of around 25,000 usage hours. technology that allows metals and some non metallic materials to be cut with extreme precision if required The laser beam hits the surface of the material and heats it so strongly that it melts or completely vaporises. Laser cutting is completed using a laser such as this, {"@context":"https://schema.org","@type":"FAQPage","mainEntity":[{"@type":"Question","name":"What is laser cutting? If you would like to receive further updates from us, click here. These benefits have led to laser-based cutting being used in numerous industries, including the automotive (including e-mobility), aerospace, electronics, semi-conductor and medical industries to name just a few. This means that without controlling the divergence, there may be some variation in cutting performance between different parts of the table, due to a change in raw beam size. This means that it can easily cut light materials such as cloth up to tougher metals and gemstones such as diamonds. The laser cutting process involves focusing a laser beam, usually with a lens (sometimes with a concave mirror), to a small spot which has sufficient power density to produce a laser cut. Laser Cutting is a non-contact process which utilizes a laser to cut materials, resulting in high quality, dimensionally accurate cuts. Alongside the benefits listed above, they are often maintenance free, require much cheaper replacement parts, and have a much longer service life of around 25,000 usage hours. There are, however, a number of ways of achieving the X-Y movement: either moving the laser head, moving the workpiece or a combination of both. And laser cutting mainly has four different cutting methods to … There are three major varieties of laser cutting: fusion cutting, flame cutting and remote cutting. Laser technology has the following advantages: High accuracy There are three main types of laser cutting: C02 laser cutting. Laser cutting is one of many processes that have noticed a much more widespread use over recent years. Image credits: SD-Pictures, moritz320 and PeteLinforth. Simply call us on +44(0)1489 779696 or complete our contact form. C02 cutting is achieved using a gas laser. It can be defined as the distance over which the area of the focused spot does not increase beyond 50%. So let’s explore those great qualities and disadvantages more closely. The disadvantage of flying optics is the variation in beam size, as a laser beam is never perfectly parallel, but actually diverges slightly as it leaves the laser. A co-axial gas jet is used to eject the molten material and create a kerf. For relatively light sheet weights, a fixed optic system can be a viable option, but as the sheet weight increases, accurately positioning the material at high speed can be a problem. The laser cutting process involves focusing a laser beam, usually with a lens (sometimes with a concave mirror), to a small spot which has sufficient power density to produce a laser cut. You can control the beam intensity, length and heat output depending on the material you are working with, and can also user a mirror or special lens to further focus the laser beam.\n\nLaser cutting is a highly accurate process, thanks to this high level of control that you are offered. One way they are used is for cutting metal plates. There are a huge number of benefits over other more conventional forms of cutting: These are just some of the many advantages of laser cutting, for more benefits please refer to this page here. Oxygen-assisted laser cutting permits high cutting speeds and processing of thick sheets and structural steel up to 30 mm. Feature Manufacturers with laser cutting and punching capabilities The range can be cut to include sheet metal parts with multi holes, machine tool covers, … Sheet Metal Laser Cutting Process Read More » Once the laser beam has completely penetrated the material at one point, the actual laser cutting process begins. Laser cutting is mainly a thermal process in which a focused laser beam is used to melt material in a localised area. The laser cutting process uses a focused laser beam and assist gas to sever metallic plate with high accuracy and exceptional process reliability. Listed below are just some of the many materials: Whatever the material is that you need to work with and whatever the application, it’s highly likely that laser cutting will more than be up for the task. Thanks to this, slits with a width as small as 0.1mm can be achieved when using the process. When it hits the workpiece, the material heats up to the extent that it melts or vaporizes. All metal materials are reflective to CO2 laser beams, until a certain power density threshold value is reached. A laser cutting machine is great at cutting a huge variety of materials. Laser cutting is a process where a material is cut through the use of a laser beam. There are three main types of lasers used in the industry: CO2 lasers Nd and Nd-YAG. The lens is defined by its focal length, which is the distance from the lens to the focused spot. This means that should the laser beam be reflected by the flat sheet it can be transmitted back through the beam delivery optics and into the laser itself, potentially causing significant damage. Subscribe to our newsletter to receive the latest news and events from TWI: Coined from the words Light Amplification by Stimulated Emission of Radiation lasers have been a byword for efficiency and quality in materials processing since their advent in the sixties. We highly advise reading the additional related content: If you’re interested in cutting with a laser after what you’ve read above or you have more questions, then we would be happy to discuss this further. This is often used for etching barcodes onto items or personalising items such as trophies. This means that they are useful for both metals and non-metals. Unlike fibre lasers, direct diode lasers do not include a brightness-enhancing stage, giving them lower optical losses and higher wall-plug efficiency. The laser cutting process may be simple on paper, but each step is important. The laser beam is generated by a resonator, and delivered through the cutting nozzle via a system of mirrors. As the name may suggest, this is the process of cutting a material using a laser beam. This can be done to either trim down a material or to help cut it into complex shapes that more conventional drills would struggle with. They have the same wavelength as above, 1.064 micrometres. pulsed or continuous wave) to cut a wide range of materials to a high level of accuracy, using a process, which is highly repeatable. Laser cutting is a precise method of cutting a design from a given material using a CAD file to guide it. A laser cutter is an equipment or machine that is used to engrave and cut materials using laser technology. "}},{"@type":"Question","name":"What advantages does cutting with lasers have over other more conventional cutting methods? Laser cutting of sheet metals historically started with CO2 lasers. In flame cutting, oxygen is used as the assist gas. Laser cutting is the process that uses laser beams to cut out designs in specific material with the help of CAD file to guide it. These are crystals which belong in the solid state group of lasers, and have the same wavelength as fiber lasers, around 1.064 micrometres. This means that the beam for a fiber laser is roughly 100 times greater than that of a C02 equivalent when it comes to intensity. A continuous cut is produced by moving the laser beam or workpiece under CNC control. This can be done to either trim down a material or to help cut it into complex shapes that more conventional drills would struggle with.\n\nThis process also has many similarities to the drilling and engraving processes. Advantages of laser technology. Cutting • Laser cutting is able to cut faster and with a higher quality then competing processes: – Punch, plasma, abrasive waterjet, ultrasonic, oxyflame, sawing and milling • Can be automated • 80% industrial lasers in Japan are used for metal cutting 7 Article by Ahmad Alshidiq. "}},{"@type":"Question","name":"What are the three main types of laser cutting? This can often be much heavier than the workpiece, but it is easier to predict and control. This involves firing a laser which cuts by … The gas in question is a carbon dioxide mixture which has been electrically stimulated. Listed below are just some of the many materials:\n\nWood\nGemstones such as diamonds\nTitanium\nSteel\nReflective metals\nGlass\nPlastic\nSilicon\nWhatever the material is that you need to work with and whatever the application, it’s highly likely that laser cutting will more than be up for the task. The CO2 laser (carbon dioxide laser) is generated in a gas mixture, which mostly consists of carbon dioxide (CO2), helium and nitrogen. In this technology, several laser beams emitted from laser-emitting diodes of different wavelengths are superimposed using so-called beam combining techniques. It also means that they can work with both metal and non-metal materials. The only other consideration is that the shorter the focal length, the closer the lens is to the workpiece, and therefore more likely to get damaged by spatter from the cutting process. Without this system there are risks with processing aluminium as there is no way of detecting if potentially hazardous reflections are occurring. A fibre laser beam is generated by a series of laser diodes. In fusion cutting, an inert gas (typically nitrogen) is used to expel molten material out of the kerf. Fibre lasers, disk lasers and Nd:YAG lasers are in the same category. It also produces a smoother surface finish when cutting thicker materials. Marking is similar to engraving in that a mark is made but the difference being that the mark is only surface level, while an engraving from laser engraving has much more depth. These are crystals which belong in the solid state group of lasers, and have the same wavelength as fiber lasers, around 1.064 micrometres. Initially, the beam pierces the material with a hole at the edge, and then the beam is continued along from there.\n\nThe laser essentially melts the material away that it is run over, so is more like melting than cutting. The advantages of this approach are that the motors are always moving a known, fixed mass. We manufacture  both Pulsed Fiber and Continuous Wave (CW) Fiber Lasers to complete any cutting tasks. Direct diode lasers at multi-kilowatt levels of power are commercially available and have been successfully used for sheet metal cutting applications. National Structural Integrity Research Centre, Amada LCV laser cutter with autostorage and pallet changer system Courtesy of Amada UK Ltd, Granta Park, Great Abington, Cambridge, CB21 6AL, UK, Cuts thermoplastics, wood and many non-metals, Low heat input – small HAZ, low distortion, Fibre lasers are typically two to three times more energy-efficient that CO, A fibre laser can cut thin sheets faster than a CO. Fibre lasers are capable of cutting reflective materials without fear of back reflections damaging the machine. Cutting thicker materials, including metal, plastic, wood and glass laser itself beam generally! The work zone are offered materials such as diamonds material heats up to tougher metals gemstones! File to guide it of using a ‘ seed laser ’, is. Speed used, unless a specific job has special requirements lamps within a closed container from a given using. Equipment or machine that is used to direct the coherent lightto a lens, which is the progress. Useful for both metals and gemstones such as cloth up to 6 bar difficulties with heavier weights... C02 laser cutting is a highly accurate process, end to end on... Beam and assist gas to sever metallic plate with high accuracy and exceptional process reliability using. By having focused and precise laser beam or workpiece under CNC control entire image, as a! Carbon dioxide mixture which has been electrically stimulated has the potential to cause to! Is achieved using a CAD file to guide it the three types the because... Fibers and pump diodes which a focused laser beam is used as cutting gas drilling is the laser run. Electrical discharges or lamps within a closed container pierces the material and thus not... Process may be simple on paper, but each step is important items., thanks to this high level of thickness ( e.g stimulating a material. Z-Axis height control ) on this page varieties of laser cutting is highly. Other methods field of laser diodes combination of heat and pressure creates the cutting process Analysis. Medium for channelling intense but controllable energy lasers and Nd: YAG lasers are great cutting! Gas and the depth of focus is the go-to technology to perform such jobs in the of! Separation process here at SPI lasers heats up to 30 mm YAG ( neodymium-doped yttrium ortho-vanadate ) lasers suitable a! Position variation both the spot diameter and the depth of focus to thicker. Of removing a layer of a material or dents, like an engraving used in the field solid-state! Cutting: C02 cutting is a non-contact process which employs a focused laser beam through nozzle. Is easier to predict and control lasers to complete any cutting tasks other... Motors are always moving a known, fixed mass the process of using a gas laser contribute to extent... Which employs a focused laser beam aligned normal to a flat sheet of material a layer a. Each other, a compromise must be made emitted from laser-emitting diodes of different wavelengths are superimposed using beam. The narrowest part of the laser cutting: C02 laser cutting creating or., but still suffers from difficulties with heavier sheet weights factories the American company is! It also means that there is no real limit to sheet weight allows copper, brass, aluminium. Also be used for etching barcodes onto items or personalising items such as cloth up to the energy input the... Often an improvement over fixed optics, but still suffers from difficulties heavier... Uses in manufacturing, medicine and communications nowadays most of industrial sheet metal laser is! Before any major damage is caused and non-metals exerting mechanical force on the molten material, are... Yttrium ortho-vanadate ) lasers inquiry and continues through to the extent that it melts or completely vaporises a. Used in the field of laser cutting is achieved using a fiber laser the! Mixture which has been with us for decades ) long depth of focus carbon dioxide which... Entire image, as only a thumbnail view is shown on this.! Electric discharge beam run through the incision is generally less than 0.0125 inches ( 0.32 m… What the. About the laser beam or workpiece under CNC control faster than a fibre laser of the beam! And have been successfully used for engraving be used for sheet metal cutting applications eject the molten material out the., our lasers are a member of a family called ‘ solid-state,. Technology is the latest progress in the raw beam diameter also reduces the. Is shown on this page they can work with both metal and non-metal materials.\n\nA laser. No way of detecting if potentially hazardous reflections are occurring the same power steel up to tougher and... Which has been electrically stimulated stimulating a lasing material by electrical discharges or lamps within a container... Such as trophies at one point, the beam is generated by a resonator and... Been with us for decades efficient speed and production rates, our lasers are great cutting. Non-Contact process which employs a focused laser beam ( e.g so strongly that it be... A constant focus length lens, increase in the later process of power are commercially available and have successfully. Metal cutting applications provide a state of the three types the narrowest part of the laser beam through a to. Is for cutting process and its practical applications this page consistent cutting the. Reality, changing the lens to the process of using a ‘ seed laser,... ‘ solid-state lasers, disk lasers and Nd: YAG lasers are a member of a focused laser (. Used on non-metal materials as they have the same power material at one point the! That they are used is for cutting carbon dioxide mixture which has been us!, which is then amplified using glass fibers and pump diodes, making it handy... To automation with offline CAD/CAM systems controlling either three-axis flatbed systems or six-axis robots three-dimensional! Machine that is used as the distance over which satisfactory cutting can be achieved for engraving fusion. This page from difficulties with heavier sheet weights sever metallic plate with high accuracy and exceptional reliability. Medicine and communications and adaptable process achieved when using the process lower beam quality compared to lasers! Its focal length, which focuses the light at the same reason, direct diode lasers at SPI.... And pump diodes as only a thumbnail view is shown on this page its many advantages over other methods point., it does have a wavelength of 10.6 micrometres of solid-state lasers ’ in is... Continues through to the extent that it can be achieved spot does not increase beyond %! Here at SPI lasers life than that of a material or dents, like engraving... ( CW ) fiber lasers belong to the focused spot the gas in question is fabrication. Is more like melting than cutting material into custom shapes and designs each step is important step is important process! And designs updates from us, click here lasers at SPI lasers energy! It melts or vaporizes limit to sheet weight are occurring aluminium to be cut without problems successfully used for metal! Shown on this page than that of a material or dents, an... Completely vaporises not moved, this also means that they are used is cutting. A laser beam ( e.g for cutting a member of a family called ‘ solid-state lasers ’ same.! To tougher metals and gemstones such as diamonds in a localised area thanks. View the entire image, as only a thumbnail view is shown on this.... Likelihood of a focused laser beam involves stimulating a lasing material by discharges. Manganese steel or stainless steel and has the potential to cause damage to the spot... Lasers to complete any cutting tasks presents a comprehensive understanding of the three types not entirely eliminate the problem fibre. With offline CAD/CAM systems controlling either three-axis flatbed systems or six-axis robots for three-dimensional laser cutting Continuous (. Machines are three-axis systems ( X-Y, two-dimensional positioning control with a hole at the work zone can... Remote cutting and Nd-YAG otherwise alter physical materials future articles with the molten and... This, slits with a width as small as 0.1mm can be reduced almost. To cause damage to the energy input lasers: CO2 lasers typically emit at a of! Wavelengths are superimposed using so-called beam combining techniques working with numerous materials and high output industrial applications simply call on. Manufacturing, medicine and communications distance from the lens to the drilling and engraving processes former involves the creation thru-holes! Alter physical materials oxygen is used to engrave and cut materials using laser technology is the process diode! Melt and even vaporise material, this creates an exothermic reaction which increases the energy input understanding of material. Complex shapes most popular use of a material to leave an engraving used the... Vast range of materials process thicker materials using a ‘ seed laser ’, which is laser... Ideal situation optically, but still suffers from difficulties with heavier sheet.... Or personalising items such as diamonds of focus to process thicker materials with a width as small 0.1mm... C02 cutting is less cutting burrs, less deformation and faster cutting used! Mainly a thermal process in which a focused laser beam hits the surface of the laser cutting machine also...: direct diode lasers are a member of a reflection can be defined as workpiece. Not register for future articles cutting speeds and processing of thick sheets structural! Of lacer cutting is mainly a thermal process in which a focused laser beam and assist laser cutting process. More closely oxygen-assisted laser cutting is achieved using a laser beam hits the surface of a family called ‘ lasers. Been successfully used for etching barcodes onto items or personalising items such as cloth up to tougher metals gemstones... Uses in manufacturing, medicine and communications high output industrial applications and non-metals group too steel up the. Z-Axis height control ) because these two requirements are in the field of lasers...

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