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1
Content available remote Influence of technological parameters on additive manufacturing steel parts in Selective Laser Sintering
Król M., Kujawa M., Dobrzański L.A., Tański T.
Archives of Materials Science and Engineering
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2014
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Vol. 67, nr 2
84--92
EN
Purpose: The investigations have been carried out on test pieces of 316L stainless steel parts fabricated by Selective Laser Sintering technique. The effect of selective laser sintering parameters such as power output, laser distance between the points sintered metal powder during additive manufacturing as well as the orientation of models relative to the laser beam and substrate on the roughness, surface morphology and wear resistance of manufactured models were performed. Design/methodology/approach: To fabricate 316L stainless steel parts, the method using selective laser sintering (SLS) technique, using Renishaw AM 125 machine is utilised. Wear resistance, roughness and surface morphology of SLS produced samples prepared via different process parameters are investigated. Findings: The results show that the wear resistance and surface morphology are strongly influenced by orientation of the parts relative to the laser beam, power output of laser and laser distance between the points sintered metal powder during additive manufacturing. Research limitations/implications: In the nearest future, studies will be conducted to establish influence of laser parameters such as scan speed, focus offset, exposure time, diameter of laser beam and hatch parameters such as hatch type and hatch distance on the quality and density of AM steel parts. Practical implications: Stainless steel is one of the most popular materials used for selective laser sintering (SLS) processing to produce nearly fully dense components from 3D CAD models. Reduction of surface roughness is one of the key research issues within the additive manufacturing technique SLS, since one of the major cost factors is the post processing of surfaces by means of milling, turning, grinding and polishing. Originality/value: This paper can serve as an aid in understanding the importance of technological parameters on quality and wear resistance of manufactured AM parts made by SLS technique.
2
Content available Analiza możliwości zastosowania technologii przyrostowych do wytwarzania elementów konstrukcji robotów mobilnych
Cader M., Trojnacki M.
Pomiary Automatyka Robotyka
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2013
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R. 17, nr 2
200-207
PL
W artykule przedstawiono wyniki badań materiałów niemetalowych przeznaczonych do zastosowania w technologii przyrostowego wytwarzania elementów konstrukcji robotów. Artykuł dotyczy również zastosowania jednej z takich technologii, tj. technologii FDM do w produkcji części robotów, na przykładzie prototypu robota o zmiennej konfiguracji. W artykule opisano metodologię przygotowania wybranych części robota do wytworzenia z zastosowaniem technologii FDM.
EN
The article presents the research results of the mechanical properties of non-metallic materials used in additive manufacturing for the production of structural components of mobile robots. Article also concerns one of the technology, i.e., FDM for the production of reconfigurable robots construction elements. This paper also describes the methodology for the preparation of selected parts of the robot to manufacture them using FDM technology.
3
Content available remote Wytwarzanie wysokowytrzymałych części dla robotów mobilnych z zastosowaniem technologii FDM
Cader M., Trojnacki M., Budzik G.
Mechanik
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2013
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R. 86, nr 7CD
95--104
PL
Artykuł dotyczy zastosowania technologii FDM w szybkim prototypowaniu wysokowytrzymałych części robotów mobilnych. W artykule opisano metodologię przygotowania części do wytworzenia z zastosowaniem technologii FDM oraz przedstawiono wyniki badań materiałowych. Przedstawiono także wybrane wytyczne dla konstruktorów, projektujących części z przeznaczeniem do wytworzenia z zastosowaniem technologii FDM.
EN
Article presents the use of technology in FDM rapid prototyping of high-strenght parts of mobile robots. This paper describes the methodology for the preparation of parts for production them using FDM technology, and presents the results of research of materials. Also presented are selected guidelines for designers, designing parts for use in the manufacture using FDM technology.
4
Content available remote Technologie wytwarzania przyrostowego w praktyce
Cader M., Zboiński M., Budzik G.
Mechanik
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2013
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R. 86, nr 8-9
762--767
PL
Poruszono tematykę zastosowania technologii wytwarzania przyrostowego w produkcji. Dokonano podstawowego podziału technologii oraz opisano możliwości ich zastosowania w poszczególnych gałęziach przemysłu.
EN
The article concerns the application of additive manufacturing technology to produce. The article presents the basic division of technology and describes their uses in industries.
5
Content available remote Analiza wpływu orientacji modelu w komorze roboczej na wytrzymałość w procesie FDM
Cader M., Jastrzębska A., Pakieła Z.
Mechanik
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2013
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R. 86, nr 7CD
85--94
PL
Artykuł prezentuje wyniki badań wpływu ułożenia próbek materiałowych w komorze roboczej maszyny FDM na ich wytrzymałość oraz wyniki pomiaru czasu wytwarzania tych próbek. Próbki zostały wykonane z wybranych materiałów stosowanych w technologii FDM. W artykule omówiono także aspekty rynkowe i właściwości technologii FDM oraz opisano wybrane materiały.
EN
The paper presents the results of the influence of material samples laying in the FDM machine chamber on their strength and the table of samples manufacture time. Samples were taken from the selected materials used in the FDM technology. The article discusses the characteristics and the aspect of the market of FDM technology, and presents information about chosen FDM materials.
6
Content available remote Surface quality in selective laser melting of metal powders
Król M., Dobrzański L.A., Reimann Ł., Czaja I.
Archives of Materials Science and Engineering
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2013
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Vol. 60, nr 2
87--92
EN
Purpose: The main objective of this study was performed to determine the effect of selective laser sintering parameters such as power output, laser distance between the point’s sintered metal powder during additive manufacturing as well as the orientation of the model relative to the laser beam and substrate on the surface quality of the model. Design/methodology/approach: In research the device for the selective laser sintering of metal powders Renishaw AM 125 machine was used. On the basis of an experiment plan, 24 models sample was made, which were tested to determine the surface roughness and thus describe an influence of process parameters on the model and the orientation of the surface quality. Research model was developed and manufactured with the Autofab software, and then imported into the machine, which, based on the plan of the experiment carry out models. Findings: On the basis of studies it was found that the surface quality models using 316L stainless steel with the assumed parameters of the experiment depends on the process parameters used during the selective laser sintering method as well as the orientation of formed walls of the model relative to the substrate and thus the laser beam. Research limitations/implications: Studies were carried out to determine the effects of only two parameters on the quality of surface. In the following, it is planned to perform metallographic studies to determine the effect of process parameters on the mechanical properties and the structure executed models. In the future planned are the investigations on the influence of laser parameters such as speed, focus offset, exposure time, diameter of laser beam and hatch parameters such as hatch type, distance and hatch distance on the quality of the elements structure and mechanical properties as well. Practical implications: Making models of metallic powders by selective laser sintering allows quickly designing and building functional models and equipment, quick verification of the project without opportunity to incur significant costs to the complex and expensive tools. Originality/value: While SLM can be used as a rapid prototyping process, it is extremely useful as a direct manufacturing process able to produce extremely complex parts with different surface quality which would be impossible to produce by other means. The ability to produce almost any 3D shape gives engineers complete design freedom.
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