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3D printing

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  4. nobahamas 1 november 2017 23:42

    • nobahamas

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    Vanaf het begin is de benadering van deze sector (die geen sector is) totaal fout geweest.
    Stel; ik zeg je er is een nieuwe technologie, "de verspanende technologie", dan zou iedereen nu zeggen die begrijpt wat verspanen inhoudt:
    wat verspanen? hoe verspanen? hoe grof of fijn, en waarmee? voor welke toepassingen?
    3D printing werd gelanceerd als dé nieuwe technologie, en niemand vroeg zich bovenstaande vragen af.
    Terwijl het niets anders was dan een gespiegelde tegenhanger van verspanende technologie.

    Heel veel verschillende stoffen kun je verspanen met een hakbijl.
    Ik ken niet één stuk gereedschap dat meerdere stoffen kan samenvoegen...
  5. forum rang 6 haas 1 november 2017 23:53

    • haas

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    morgen nwe dag: nwe kansen

    PS by the way heb nog 'n AB toegekend
  6. forum rang 10 voda 2 november 2017 20:45

    • voda

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    3D-printed steel touted as the future of BC home construction

    Biv com reported that a Vancouver company is hoping to disrupt the local construction framing industry with new technology that can “print” steel beams and accelerate the building process. LifeTec Construction Group Inc, which has an 8,000-square-foot warehouse near East Broadway and Renfrew Street, has already caught the attention of some local upscale homebuilders and has taken on a number of small, private projects. The company said the plan is to move eventually into construction of mid-rise and commercial/industrial structures traditionally built from wood.

    LifeTec founder and president Krishna Jolliffe said 3D-printed steel’s advantages over wood include durability, resistance to mould and warping, environmental friendliness and shorter construction time.

    Mr Jolliffe citing Lower Mainland’s construction labour shortage and its impact on building timelines and costs said that “Right now, on any construction project in the Lower Mainland, time is a huge factor. When you are dealing with a lack of labour, speeding up those time frames creates huge efficiencies for any builder. So I don’t think we’ll always be able to show people savings, because we aim to come in at the same cost as traditional methods, but on any project, we’ll have a significant time advantage.”

    LifeTec uses the Framecad system, which was first introduced in New Zealand but is now available throughout Australia, Asia, Europe, Africa and South America.

    Under the process, a building’s frame is designed on a computer, then individual modular parts, beams and panels are manufactured by specialized 3D printers that use lasers to shape the steel source material. The parts are then shipped to the construction site and assembled, with minimal on-site cutting, drilling or modifications.

    The printers can reach extremely high temperatures during operation, but the overall space requirement for a single machine is much smaller than what is needed for production-line steelmaking equipment.

    LifeTec COO Jesse Goldman, pointing to a two storey demonstration structure in the company’s warehouse that took under two days from conception to completion said that “If we can work with the developer early enough, we can show up right when the foundation is complete, and it’s three to five days from there to assemble the house as opposed to three to five weeks for building it from wood.”

    He added that “Steel is just a way better product. If you look down the list … there’s just no doubt about what’s better in every category in terms of being a construction material.”

    Jolliffe and LifeTec co-founder Mckinley Hlady, originally from Salt Spring Island, have been involved in the construction industry for years but first came into contact with 3D-printed steel as recently as 2016, when working on a sustainable housing project in South Florida. There, Jolliffe said, all of the project’s specified framing was done through printed steel.

    That’s when the two B.C. men decided to bring the concept to their home province despite the dominance of wood as a structural building material in the local construction industry.

    LifeTec started earlier this year with a team of 10, and the builders who were introduced to the building method were all receptive to the innovation, the company said.

    And although the five current projects LifeTec is working on are all private detached homes, Mr Jolliffe said they want to move into multi-family residential and mid-rise commercial/industrial because it’s in these larger construction projects, which have a need for a higher level of uniformity across a bigger scale, that printed steel’s efficiencies really shine. He added that “The sky’s the limit. We can do anything that can be done with wood. The only construction we can’t do is for highrises, but we can still do all the infill framing. We can do that at the same cost of existing providers, but at three to four times the speed. So we can create efficiencies in practically every construction process going on in the market.”

    LifeTec representatives said they’ve already had conversations with local public organizations, including an unspecified local school board, about potentially taking on larger projects, and Jolliffe noted that the company is quickly outgrowing its current space, which is enough to house just one 3D printer for manufacturing the steel modular parts. He said he’s hopeful that the company will have a full manufacturing facility featuring three or four machines, in addition to an office, within two years.

    Source : Biv com
    Bijlage:
  7. forum rang 10 voda 3 november 2017 21:14

    • voda

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    Breakthrough Made in 3D Printed Marine Grade Stainless Steel

    RD Mag reported that "Marine grade" stainless steel is valued for its performance under corrosive environments and for its high ductility the ability to bend without breaking under stress making it a preferred choice for oil pipelines, welding, kitchen utensils, chemical equipment, medical implants, engine parts and nuclear waste storage. However, conventional techniques for strengthening this class of stainless steels typically comes at the expense of ductility.

    Lawrence Livermore National Laboratory researchers, along with collaborators at Ames National Laboratory(link is external), Georgia Tech University(link is external) and Oregon State University(link is external), have achieved a breakthrough in 3D printing one of the most common forms of marine grade stainless steel a low carbon type called 316L that promises an unparalleled combination of high strength and high-ductility properties for the ubiquitous alloy. The research appears online Oct. 30 in the journal Nature Materials(link is external).

    LLNL materials scientist and lead author Morris Wang said that "In order to make all the components you're trying to print useful, you need to have this material property at least the same as those made by traditional metallurgy. We were able to 3D print real components in the lab with 316L stainless steel, and the material's performance was actually better than those made with the traditional approach. That's really a big jump. It makes additive manufacturing very attractive and fills a major gap."

    Mr Wang said the methodology could open the floodgates to widespread 3D printing of such stainless steel components, particularly in the aerospace, automotive and oil and gas industries, where strong and tough materials are needed to tolerate extreme force in harsh environments.

    To successfully meet, and exceed, the necessary performance requirements for 316L stainless steel, researchers first had to overcome a major bottleneck limiting the potential for 3D printing high-quality metals, the porosity caused during the laser melting (or fusion) of metal powders that can cause parts to degrade and fracture easily. Researchers addressed this through a density optimization process involving experiments and computer modeling, and by manipulating the materials' underlying microstructure.

    Mr Wang said that "This microstructure we developed breaks the traditional strength-ductility tradeoff barrier. For steel, you want to make it stronger, but you lose ductility essentially; you can't have both. But with 3D printing, we're able to move this boundary beyond the current tradeoff."

    Using two different laser powder bed fusion machines, researchers printed thin plates of stainless steel 316L for mechanical testing. The laser melting technique inherently resulted in hierarchical cell-like structures that could be tuned to alter the mechanical properties, researchers said.

    LLNL scientist Alex Hamza, who oversaw production of some additively manufactured components said that "The key was doing all the characterization and looking at the properties we were getting. When you additively manufacture 316L it creates an interesting grain structure, sort of like a stained-glass window. The grains are not very small, but the cellular structures and other defects inside the grains that are commonly seen in welding seem to be controlling the properties. This was the discovery. We didn't set out to make something better than traditional manufacturing; it just worked out that way."

    LLNL postdoc researcher Thomas Voisin, a key contributor to the paper, has performed extensive characterizations of 3D printed metals since joining the Lab in 2016. He believes the research could provide new insights on the structure-property relationship of additively manufactured materials.

    Mr Voisin said that "Deformation of metals is mainly controlled by how nanoscale defects move and interact in the microstructure. Interestingly, we found that this cellular structure acts such as a filter, allowing some defects to move freely and thus provide the necessary ductility while blocking some others to provide the strength. Observing these mechanisms and understanding their complexity now allows us to think of new ways to control the mechanical properties of these 3D printed materials."

    Mr Wang said the project benefitted from years of simulation, modeling and experimentation performed at the Lab in 3D printing of metals to understand the link between microstructure and mechanical properties. He called stainless steel a "surrogate material" system that could be used for other types of metals.

    The eventual goal, he said, is to use high-performance computing to validate and predict future performance of stainless steel, using models to control the underlying microstructure and discover how to make high-performance steels, including the corrosion-resistance. Researchers will then look at employing a similar strategy with other lighter weight alloys that are more brittle and prone to cracking.

    The work took several years and required the contributions of the Ames Lab, which did X-ray diffraction to understand material performance; Georgia Tech, which performed modeling to understand how the material could have high strength and high ductility, and Oregon State, which performed characterization and composition analysis.

    Source : RD Mag
  8. forum rang 6 haas 4 november 2017 16:33

    • haas

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    3D-DRUCK
    HPs große Wette auf die Zukunft
    von:
    Axel Postinett
    Datum:
    04.11.2017 09:43 Uhr
    Der Drucker-Hersteller HP tritt an, einen Billionenmarkt aufzumischen: die Industrieproduktion. Neue 3D-Drucker des Konzerns sollen die Fertigung weltweit revolutionieren und so die größte Branche der Welt umkrempeln.
  9. bub 4 november 2017 19:25

    • bub

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    Heeft iemand hier al eens van Prodways Group gehoord, een Franse metal printer, sinds ca. juni 2017 aan de beurs genoteerd en deels nog in bezit van Groupe Gorge?
    www.prodways-group.com
  10. forum rang 6 haas 4 november 2017 20:03

    • haas

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    nee
    maar even aanzien als het poosje draait op de beurs ?
    Google Finance herkent het nog niet als beursgenoteerd fonds
    www.boursorama.com/bourse/cours/graph...

    PS:PRODWAYS GROUP is a subsidiary of Groupe Gorgé. : bezit 32 miljoen aandelen
    Groupe Gorgé, gespecialiseerd in hightechindustrieën, kondigde vrijdag27-10-2017: de verkoop aan van 7,5% -belang in haar dochteronderneming Prodways, gespecialiseerd in 3D-printen, dat hij de controle op "lange termijn" wil houden.
  12. forum rang 6 haas 6 november 2017 09:34

    • haas

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    mss wel DE DDD?
    =================
    3D-DRUCK
    HPs große Wette auf die Zukunft
    von:
    Axel Postinett
    Datum:
    04.11.2017 09:43 Uhr
    Der Drucker-Hersteller HP tritt an, einen Billionenmarkt aufzumischen: die Industrieproduktion. Neue 3D-Drucker des Konzerns sollen die Fertigung weltweit revolutionieren und so die größte Branche der Welt umkrempeln.
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