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3D Printing Technology Nowadays

More durable prosthetics and medical devices for patients and stronger parts for airplanes and automobiles are just some of the products that could be created through a new 3D printing technology invented by a UMass Lowell researcher.
Substances such as plastics, metals and wax are used in 3D printers to make products and parts for larger items, as the practice has disrupted the prototyping and manufacturing fields. Products created through the 3D printing of plastics include everything from toys to drones. While the global market for 3D plastics printers is estimated at $4 billion and growing, challenges remain in ensuring the printers create objects that are produced quickly, retain their strength and accurately reflect the shape desired, according to UMass Lowell's David Kazmer, a plastics engineering professor who led the research project.
Called injection printing, the technology Kazmer pioneered is featured in the academic journal Additive Manufacturing posted online last week.
The invention combines elements of 3D printing and injection molding, a technique through which objects are created by filling mold cavities with molten materials. The marriage of the two processes increases the production rate of 3D printing, while enhancing the strength and properties of the resulting products. The innovation typically produces objects about three times faster than conventional 3D printing, which means jobs that once took about nine hours now only take three, according to Kazmer, who lives in Georgetown.
"The invention greatly improves the quality of the parts produced, making them fully dense with few cracks or voids, so they are much stronger. For technical applications, this is game-changing. The new process is also cost-effective because it can be used in existing 3D printers, with only new software to program the machine needed," Kazmer said.
The process took about 18 months to develop. Austin Colon of Plymouth, a UMass Lowell Ph.D. candidate in plastics engineering, helped validate the technology alongside Kazmer, who teaches courses in product design, prototyping and process control, among other topics. He has filed for a patent on the new technology.

ExOne Launches new Sand 3D Printing Network, Powered by More than 40 Industrial Binder Jetting Systems

  • Manufacturers can now easily tap the benefits of 3D printed molds and cores across North America
  • Network can help ensure a stable supply of metal casted products during the COVID-19 crisis
  • A wide range of foundry materials are supported by the network, from aluminum to zinc
    • The ExOne Company (Nasdaq: XONE), the global leader in industrial sand and metal 3D printers using binder jetting technology, today announced the creation of a Sand 3D Printing Network in North America, which aerospace, automotive, agricultural and other manufacturers can use to tap the benefits of 3D printed sand molds and cores for high-value metal casting projects.
    This press release features multimedia. View the full release here: https://www.businesswire.com/news/home/20200728005297/en/
    ExOne's new Sand 3D Printing Network makes it easy for manufacturers to locate X1 printers for metalcasting molds and cores. To locate a sand 3D printer for your metal casting project, visit https://www.exone.com/sandprinterlocator (Photo: Business Wire)
    The newly formed network is powered by more than 40 proven binder jet 3D printers throughout the United States, Canada and Mexico. Largely owned by premium pattern shops and foundries, this fleet of S-Max and S-Print systems can provide quick turnaround on high-quality 3D sand molds and cores, usually within 3-5 days. To locate an ExOne sand 3D printer in the network for your project, visit https://www.exone.com/sandnetwork.
    "The new ExOne Sand 3D Printing network can help manufacturers easily locate an ExOne sand 3D printer that best meets their needs," said John Hartner, ExOne CEO. "What’s more, our network can help ensure a steady supply of sand molds and cores for metal castings, especially during a crisis, as well as enable reshoring of key parts that may be difficult to ship during the ongoing COVID-19 pandemic."
    Aside from speed, ExOne’s sand 3D printing network offers manufacturers a number of other benefits:
  • Sand cores can often be 3D printed as a monolithic unit – eliminating the labor, error and scrap that comes with assembling separate cores into a single piece prior to casting
  • 3D printing enables manufacturers to overcome traditional design restraints and easily iterate breakthrough new designs with ease
  • New 3D-enabled rigging, riser and gating designs can ensure a high quality casting that can be simulated and often completed in a single pour
  • 3D printed molds and cores are a digital manufacturing process and do not require the expensive creation, storage or repair of patterns or molds for later reuse
    • The ExOne Sand 3D Printing Network can support a wide range of foundry materials, including aluminum, bronze, copper, nickel-based alloys, iron, magnesium, steels, titanium and zinc.
    ExOne's premium OneCast support service can also provide design assistance for sand molds and cores, as well as additional simulation services to help ensure a done-in-one casting.
    About ExOneExOne is the pioneer and global leader in binder jet 3D printing technology. Since 1995, we’ve been on a mission to deliver powerful 3D printers that solve the toughest problems and enable world-changing innovations. Our 3D printing systems quickly transform powder materials — including metals, ceramics, composites and sand — into precision parts, metalcasting molds and cores, and innovative tooling solutions. Industrial customers use our technology to save time and money, reduce waste, improve their manufacturing flexibility, and deliver designs and products that were once impossible. As home to the world’s leading team of binder jetting experts, ExOne also provides specialized 3D printing services, including on-demand production of mission-critical parts, as well as engineering and design consulting.
    Scientists have developed a new printing process that advances 3D capabilities and aims to improve quality of products used in business, industry and at home.
    Called injection printing, the technology David Kazmer from University of Massachusetts-Lowell pioneered is featured in the academic journal Additive Manufacturing.
    The invention combines elements of 3D printing and injection molding, a technique through which objects are created by filling mold cavities with molten materials.
    The marriage of the two processes increases the production rate of 3D printing, while enhancing the strength and properties of the resulting products.
    The innovation typically produces objects about three times faster than conventional 3D printing, which means jobs that once took about nine hours now only take three, according to Kazmer, a plastics engineering professor who led the research project.
    While the global market for 3D plastics printers is estimated at $4 billion and growing, challenges remain in ensuring the printers create objects that are produced quickly, retain their strength and accurately reflect the shape desired.
    "The invention greatly improves the quality of the parts produced, making them fully dense with few cracks or voids, so they are much stronger," said Kazmer.
    For technical applications, this is game-changing.
    "The new process is also cost-effective because it can be used in existing 3D printers, with only new software to programme the machine needed".
    Substances such as plastics, metals and wax are used in 3D printers to make products and parts for larger items, as the practice has disrupted the prototyping and manufacturing fields.
    Today, products created through the 3D printing of plastics include everything from toys to drones and this new technology can be useful.


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