Parametric optimization of the process of selective laser. The setup design for selective laser sintering of high. A chamber in the production machine is filled with powder. Eos direct metal laser sintering additive manufacturing am. Eos commercialized a machine called eosint based on laser. The direct metal laser sintering dmls process builds the parts up layer by layer by melting fine metal powder with a laser beam, which.
Eos has expertise in materials and metals that are required for direct metal laser sintering process using additive manufacturing. Belonging to the group of polyaryletherketone paek, this semicrystalline, thermoplastic material was developed for the use on the new hightemperature system eosint p 800. With the aid of the companys eostate powderbed, a camera built into the process chamber monitors the powder bed, following powder deposition and exposure, by means of still images. Plastic laser sintering system eos p 800 processing high. Dnvglcg0197 additive manufacturing qualification and. Plastic machinesselective laser sintering powder bed. Direct metal laser sintering dmls is an industrial 3d printing process that builds fully functional rapid metal prototypes and production parts in 7 days or less. Laser power scan velocity hatch distance temperature distribution process chamber temperature removable frame chamber temperature pyrometer infrared heating system inert gas atmosphere waterwatercooler air filter compressed air quality ftheta lense laser window fluidization shrinkage factor exposure strategy parameters eos part property. Direct metal laser sintering dmls is an am process. One of the most popular additive manufacturing processes is laser based direct metal laser sintering process which enables us to make complex three dimensional parts directly from cad models. Laser sintering system eosint m 280 for the production of tooling. It is already benefiting companies in a wide range of sectors.
Medical devices laser sintering processes for medical technology eos. Eos p 500 industrial 3d printing for plastic parts. Eos parametereditor, eosame, eos rp tools, eostate everywhere, psw 3. The sintering process will also result in a degree of porosity, which can be controlled and largely removed by using a finer powder and by raising the power of the laser so as to increase the proportion of the powder that melts, up to complete melting. Eosint m 270 is a stateoftheart lasersintering system. The schematic diagram of sls system is as shown in the figure 1. Such models are required where ever intraoral scanners are used.
Eos has more recently introduced the eosint m270 machine, which is equipped with a 200 w ybfibre laser which has a variable focus and can finely focus a short. The selective laser sintering process begins with the conversion of customer generated 3d cad data into a sliced stl file using proprietary software. Its solidstate fibre laser offers high performance and reliability over a long lifetime. This article presents an overview of selective laser sintering sls work as reported in various journals and proceedings. The purpose of this paper is to investigate the polyamide 12 pa12 powder properties deterioration in the laser sintering ls process and propose a methodology for more efficient powder recycling. Processability of peek, a new polymer for high temperature. This document provides information and data for parts built using.
Assessing the potential of direct metal laser sintering. In addition, additive manufacturing operates with essentially greater material efficiency than machining methods. Flowability of powders for selective laser sintering sls. Eos peek hp3, a highquality material from the polyaryletherketone family, is the first high performance polymer to be selec ted by eos for processing on the. Philosophy 1989 2002 worldwide market leader for lasersintering systems, the key technology for emanufacturing. Recycling of polyamide 12 based powders in the laser. Dmls means lasersintering using a metal powder, in which metal parts are produced directly in the building process. The am technology variant most frequently used in the production of end use parts is laser sintering ls. Eosint mtechnology for direct metal lasersintering dmls. A part that can be milled with little effort should generally be milled. Laser sintering will produce even more dramatic changes to the dental market in the decades ahead. Ziegelmeier, in laser additive manufacturing, 2017. Unfused material can be recycled and reintroduced to the production process. Poly aryl ether ketones paeks and carbonreinforced paek.
The process that is carried out in laser sintering techniques is that, the designer designs a part, next the part is sliced on the horizontal plane by using the required software. It is also possible to make changes at short notice without requiring tools. Process chamber fits micro parts enables safe processing of reactive materials. Highest productivity with maximum material flexibility incl. This technique was developed by eos gmbh of munich, germany, and has. Boeing, ge aviation, and honeywell aerospace are among presenters at event novi, mich. Eos is a leading supplier of laser sintering technology and offers a range of materials for laser sintering. This process builds 3dstructured parts by selectively sintering successive layers of powdered material under a laser. Identification of process phenomena by optical inprocess monitoring. Its materials, systems and process parameters are perfectly matched that allows reproduction of the defined property profiles. Gradually it was expanded to include metals and alloys to manufacture functional prototypes and develop rapid tooling. Eos aluminium alsi10mg direct metal laser sintering.
Processability of peek, a new polymer for high temperature laser. A range of metals produce final parts that can be used for enduse applications. A laser sintering machine applies the powdered material only to those sites where it is meant to be applied. Eos provides the worldfirst highperformance polymer for the lasersintering process eos peek hp3. Eos offers a range of powder metal materials the technology.
Introduction of lowcost 3d printers in 1996, stratasys introduced the genisys machine, which used an. Pdf effect of different heat treatments on mechanical. Laser sintering replacing traditional processes in dental. Fine focussing optics enable excellent detail resolution and part quality, while a variable focus diameter allows increased productivity and broad process control. For your engineering designdriven manufacturing with industrial 3d printing.
Because of the modular construc tion, todays system is already prepared for future innovations that can then be implemented with upgrades. Scan speed during build process up to 2 x 10 ms 32. Eos p 500 the automationready manufacturing platform for laser sintering of plastic parts on an industrial scale high quality components at the lowest costperpart. Ivam, eos a look into the lab and beyond motivation technology business. There is no general rule about when which fabrication process e. Yag laser has also been employed either independently9,10,16,42,45,62. In the laser sintering process, the laser rapidly scans across the powder bed, and the primary fusion of the particles takes place over a short time period with no mechanical pressure applied. In europe, 1989 also saw the formation of eos gmbh in germany, founded by hans langer. Special machinery industry laser sintering systems eos. Our technology along with selective laser sintering process plastic machines help meet the manufacturing requirements with accuracy, stability, flexibility keeping the. Eos technology general functional principle of laser sintering additive manufacturing this technique enables the production of components directly from 3d cad data. Direct metal laser sintering dmls selective laser melting slm stereo lithography sla selective laser sintering sls sintering is a process which heats a material to just below its boiling point.
It means that they can produce complex components almost overnight by making direct use of the cad construction data. Components are built up layer by layer from materials supplied as fine powder, which are available in a wide range of metals and plastics. Selective laser sintering was first done mainly on polymers and nylon to create prototypes for audiovisual help and fittoform tests. The part is then cooled slowly, usually over a number of hours. The machine warms up with ls material heated to just below melting point prior to the feed bed rises typically by os 800 tensile modulus up to 4400 mpa. It is especially remarkable that relevant properties are available in 3 dimensions and the. The term additive manufacturing am describes a collection of production techniques enabling the layerbylayer manufacture of components using digital data and raw material as inputs. The data is exclusively available via the eos homepage. Eos aluminium alsi10mg eos aluminium alsi10mg is an aluminium alloy in fine powder form which has been specially optimised for processing on eosint m systems this document provides information and data for parts built using eos aluminium alsi10mg powder eos art. Selective laser sintering sls is one of the most famous and. Surface finishes for ti6al4v alloy produced by direct. Eos p 770 laser sintering system with two lasers for the.
Eos founding eos gmbh electro optical systems pilot customer bmw. Selective laser sintering sls, also just known as laser sintering ls, creates tough and geometrically complex components for. Selective laser sintering sls was invented at the university of texas at austin59 and the process was commercialized by two companies, dtm corporation60 and eos gmbh electro optical systems. Direct metal laser sintering dmls for 3d printing projects. Additive manufacturing overcomes the limits imposed by conventional production techniques. Plastic lasersintering system for the direct manufacture of series, spare parts. Laser sintering system eosint m 280 for the production of tooling inserts, prototype parts and end products directly in metal. Selective laser sintering sls is one of the most famous and commercially. Selective laser sintering sls is a way to build prototypes early in the design cycle or production parts in a wide variety of applications. Lasersintering means methods which manufacture solid parts by solidifying powderlike materials layerbylayer by exposing the surface of a powder bed with a laser or other energy beam direct metal lasersintering dmls means lasersintering using a metal powder so that metal parts are produced directly in the building process. Laser sintering system for metal industrial laser solutions. Eos parametereditor, eosame, eos rp tools, eostate everywhere, psw.
Introduction laser sintering ls is one of the most advanced and promising fabrication methods amongst the polymeric additive manufacturing technologies. These can achieve a maximum total output of up to 5 kilowatts. Today, the eos systems are recognized around the world. The laser power wasnt very high so the particles merely sintered together and then you had to run the parts through a hot isostatic press hip secondary process to try and reduce the voids.
Figure 1 schematic of the laser sintering process 2 a wide variety of materials are processed using selective laser sintering. Pdf the setup design for selective laser sintering of high. Mould tool inserts for an electronic housing as produced by the powder bed dmls process in eos directmetal 20, shown on the steel build platform. Once created the stl file is then sent to print on the selective laser sintering machine. Novi, mi the eos m 290 direct metal laser sintering dmls system, equipped with a 400w laser, enables toolfree additive manufacturing of highquality serial components, spare parts, and prototypes. Eos stainlesssteel 316l is a corrosion resistant iron based alloy which has been optimized for processing on eos dmls systems. The flow of the treated powder improved significantly with a decrease of the aor to 46 1 2.
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