Sintered metal media are fabricated from various metal alloy powders to meet demanding application requirements. They are manufactured in a controlled process by pressing pre-alloyed powder of controlled size and shape into discs, cups, bushings, tubes, or porous sheet, followed by high-temperature sintering. The combination of powder size and the pressing and sintering operations define the pore size and distribution, strength, and permeability of the porous media. A scanning electron photomicrograph of a typical porous sintered metal powder material is shown. Reliable performance and long on-stream service life depend on the alloy, a stable porous matrix, precise bubble point specifications, close thickness tolerances, and uniformity of permeability. Sintered metal media are offered in a wide range of grades with mean flow pores ranging in size from 0.1 to 100 microns. Alloys include 316L stainless steel; Hastelloy B, C-22, C276, N, and X; Inconel 600,625, and 690; Monel 400; nickel 200; alloy 20; and titanium. The proper selection of porous media with appropriate pore size, strength, and corrosion resistance enables long-term filter operation with high efficiency particle retention in demanding filtration applications: high temperature, high pressure, and corrosive fluids. The primary benefits of sintered metal media are strength and fracture toughness, high pressure and temperature capabilities, high thermal shock resistance, corrosion resistance, cleanability, all-welded or sinter-bonded assembly, and long service life.


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    Title :

    Porous metal for aerospace


    Additional title:

    Poröses Metall für die Raumfahrt


    Contributors:

    Published in:

    Publication date :

    2009


    Size :

    3 Seiten, 3 Bilder, 1 Tabelle



    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English