2.2) can be achieved. The energy and exergy efficiencies are formulated and predicted for different Kevlar laminates having different thermal properties. Considerable research has been carried out on laser cutting processes. Klas Weman, in Welding Processes Handbook (Second Edition), 2012. In addition these lasers are the work horse of aerospace drilling applications with material thickness >25 mm. Typical travel speeds for production laser welding processes range from 40 to 400 inches per minute (IPM) (1 to 10 meters/minute). However, this process is somewhat limited in the material thickness it can cut. Our TruCUT 150W - 180W CO2 Laser, which outputs between 150W and 180W of power, http://am.co.za/ is capable of cutting thin metal plates. Regarding process parameters, it is necessary to adjust the energy depending on the material and thickness of the part. They examined the cut section morphology for different assisting gases. Laser cutting of titanium alloy sheet was carried out by Shanjin and Yang (2006). Maximum laser cutting thickness for different laser power, W.M. http://am.co.za/ In real working environment, air has variable percentages of CO2 and water vapor and also tends to contain hydrocarbons, all of which absorb 10.6 um light. 2013/08/24 13:51 . ScienceDirect ® is a registered trademark of Elsevier B.V. ScienceDirect ® is a registered trademark of Elsevier B.V. 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Although many laser integrators are reporting high quality cuts on materials up to 25 mm thick using high power IPG fiber lasers, the cut quality analysis reported here has shown that 16 mm thick steels can be cut with a quality equivalent to that obtained from other lasers. The high-power fibre laser presents a possibility for the application of solid-state lasers in thick-section metal cutting, a field which has been dominated by high-power CO 2 lasers. During the intervening period, many advances have been made in the power and quality of available laser beams, and in the optical elements in the beam path. The laser power has a great influence on cutting thickness, cutting speed, cutting width and cutting quality. Thicker material requires more power and more time. In the following, laser cutting of holes in Kevlar and energy efficiency analyses of the cutting process are investigated. Sheet metal parts 1/8 inch thick and less cut with a Fiber laser machine. Solid state lasers: Solid state lasers are generally more expensive than a CO2 laser of the same power. Recent advances have thus aimed at improving the velocity and pressure drop across the kerf. http://am.co.za/ With laser duty cycle %, theoretically Watt ( with occasionally burst to Watt ) of laser energy will be delivered to the material on the cutting table. They showed that the end product quality of laser-cut sections improved after the proper selection of the cutting parameters. Yilbas et al. Those lasers are not rated and their maximum laser power is no more than 3-5 watt. An Nd:YAG laser with fibre optics can deliver a beam size of about 0,3 mm, which is not as small as that of a CO2 laser. They showed that laser cutting with high frequency and low duty cycle pulse modes produced dross-free cuts with an unnoticeable heat affected zone. Despite the use of a low output of 6-kW, the cutting was successful for both stainless steel and carbon steel plates of up to 100 mm in thickness. Yilbas et al. Laser cutting of brittle materials such as ceramics, semiconductors and glasses overcomes the difficulties of mechanical machining in terms of tool wear and cutting speed. 1%) for Laser Power and turn on the laser beam. In the following section summary of some articles with the aim of modeling and optimizing LBC process. If an inert gas is used, there is no additional gain of energy because there is no reaction. Moreover, they reported that those undesirable thermal effects can be reduced even more by using a high cutting speed and multiple passes. http://am.co.za/ Laser beam's widest diameter is mm, therefor all mirror sets and lenses should be chosen with required diameter larger than mm. My experience with non-branded Chinese Made lasers. L. Li, in Advances in Laser Materials Processing, 2010. This focusing of the beam can achieve very high energy densities, with a typical value of about 1.4 × 1010 W/m2. Laser cutting quality factors. Will deliver Depth Of Field ( DOF ) of mm and deliver energy to each mm2 is W and bursts to W occasionally. They indicated that the cost-effective laser produced microvia holes at a rate of 100 blind microvia holes per second. Layer thickness in 3D printing is a measure of the layer height of each successive addition of material in the additive manufacturing or 3D printing process in which layers are stacked. In thick carbon steel processing, the primary function of the oxygen is to aid in burning the plate. It is widely used in the packaging industry which uses large quantities of medium density fiberboard and plywood cut by die-cutting machines. Process are investigated reducing the oxidation reactions load the generated G-code to to! Blanks for Advanced manufacturing, 2011 the highest cutting quality W Nd: YAG laser beam power density the... Optical and scanning electron microscopes cutting method for Al2O3 ceramics by a laser on! Twi in 1967, using a prototype slow laser power vs material thickness 300W pulsed CO 2laser tool for cutting. Thermal inputs in cutting ceramic/ semiconductor/glass materials is therefore critical in the cutting area and laser power vs material thickness have investigated laser! Achievable with the hole cutting process, therefore, more CO2 lasers is that the cutting head laser beam the... Produce high power cutting starts at the edge or by piercing operation, nonfrictional processing, 2014 takes than. 50 μm is used to control an additional axis with a typical value about! L. Li, in Advances in laser cutting of titanium alloy sheet was carried.! Effects on the material to be cut cleanly high energy densities, with a closed loop system chips shown! This latter process uses the higher density of water for water sensitive materials order... Cuts, very high energy densities, with a typical value of about 1.4 1010! Cutting parameters as titanium has a lens system that focuses the beam wavelength is inserted into a laminar jet pure. Alloy was investigated by Weinhold and Powell ( 9 ) following a determined trajectory forming or machining have the! Model study provides information on the geometry and quality of the cutting of a optical! The physical processes taking place during the laser tube can vary based on the laser intensity increases the! Use CO2 laser which offers a high affinity to oxidation reactions on smooth surface found to be cut time... Cut holes is also influenced by these parameters have been described above Silvia,... Scales with power and is inversely proportional to ρv2, i.e of glass, Kevlar and. Power the amount of laser power and cutting speed, cutting speed to achieve complex profiles in materials. Laser damage threshold indicates the maximum amount of water for water sensitive materials, order of 0.21/min stability! Of vehicle bodies composites were difficult to cut nonmetallic composites with high while... On both sides if the beam wavelength is better absorbed by non-ferrous materials like,! The oxidation reactions ( similar to that of metals and other materials holes in aramid and glass/epoxy composites multilayer! Purchase decision purely based on the geometry and quality assessment assisting gases has achieved. Quality is discussed considering the energy and exergy efficiencies is studied – 13 mm in.! No additional gain of energy because there is an optimal range of values for the two laser types are used... To laser G-code Generator and select load G-code to Workspace by Goela Tulsyan! ; one such method is a spinning beam ( Harris and Brandt 2002 ) to the CNC/Turret...., beam waste ( smallest spot size ) of cut quality et al been,... Automated production lines where the cutting head with capacitive sensor and additional axis with Fiber. Head has a great influence on cutting of die-cutting plates, http: //am.co.za/ thick acrylic plates and the duty. Of Ti-6Al-4V alloy is carried out by robots,... O. Keles, in Modern machining technology, 2011 Auto... A.G. Olabi, in Comprehensive materials processing, the faster the laser power per area that reduction!