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Additive Manufacturing (AM)

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    GE-“Cold spray” Techniques Additively Build Large-Scale Parts, Repair Components Close to Original State

    GE (Photo courtesy of GE)

    by GE

    NISKAYUNA, N.Y.– November 07, 2013–A potential “fountain of youth” for metal, GE (NYSE:GE) researchers announced the use of a process called “cold spray,” in which metal powders are sprayed at high velocities to build a part or add material to repair an existing part. Cold spray is part of GE’s expanded additive manufacturing toolkit.

    GE researchers are developing new ways to repair and even build up parts using a process called cold spray, or as we call it, “3D Painting.”  Metal powders are sprayed at supersonic speeds to build up and make parts. Here, GE materials engineer Leo Ajdelsztajn is in one of GE’s spray booths preparing a test.

    GE engineer Leo Ajdelsztajn in spray booth. (Photo courtesy of GE)
    GE engineer Leo Ajdelsztajn in spray booth. (Photo courtesy of GE)

    Anteneh Kebbede, Manager of the Coating and Surface Technologies Lab at the GE Research Center said, “In addition to being able to build new parts without welding or machining, what’s particularly exciting about cold spray as an innovative, 3D process is that it affords us the opportunity to restore parts using materials that blend in and mirror the properties of the original part itself. This extends the lifespan of parts by years, or possibly by decades, ultimately providing improved customer value.”

    Spray technologies are particularly attractive for the production of large structures, which are challenging for today’s powder-bed additive manufacturing processes due to equipment size limitations. The cold spray technique has the potential to scale up to build larger parts, with the only limitation being the size of the area over which metal powders can be applied.

    Cold spray–also known as 3D painting–demonstrates a unique marriage of materials, process, and product function which can, in the immediate future, transform repair processes for industrial and aircraft components such as rotors, blades, shafts, propellers, and gear boxes.

    Since cold spray does not require heat, like common repair processes such as welding, it allows a repaired part to be restored close to its original condition. In GE’s Oil and Gas business, GE researchers are exploring cold spray as an alternate way to repair or coat parts involved in oil and gas drilling and turbo machinery.

    Cold spray’s future benefits include extended product lifespan and reduced manufacturing time and material costs, all of which translate into significant customer benefits.

    About GE Global Research
    GE Global Research is the hub of technology development for all of GE’s businesses. Our scientists and engineers redefine what’s possible, drive growth for our businesses, and find answers to some of the world’s toughest problems. We innovate 24 hours a day, with sites in Niskayuna, New York; San Ramon, California; Bangalore, India; Shanghai, China; Munich, Germany; and Rio de Janeiro, Brazil.

    Visit GE Global Research on the web at www.ge.com/research. Connect with our technologists at http://edisonsdesk.com.

    Contact:
    GE Global Research
    Todd Alhart
    518-387-7914
    [email protected]

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  • Filed Under: Uncategorized Tagged With: 3D Painting, AM, Cold Spray, GE

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