Stock material or miscellaneous articles – All metal or with adjacent metals – Composite; i.e. – plural – adjacent – spatially distinct metal...
Patent
1982-03-01
1984-02-07
Rutledge, L. Dewayne
Stock material or miscellaneous articles
All metal or with adjacent metals
Composite; i.e., plural, adjacent, spatially distinct metal...
420431, 76DIG11, C22C 2900, C22C 3200
Patent
active
044303890
ABSTRACT:
A composite cylinder for use in injection molding or extrusion operations, wherein a lining having excellent wear resistance and corrosion resistance is applied to the inside of an outer housing by a centrifugal casting process utilizing an alloy having tungsten-carbide particles in a nickel-chromium based alloy matrix. The casting alloy has a composition of up to about 57 weight percent tungsten carbide, with the balance a mixture of nickel and chromium and possibly minor amounts of other elements, but without any significant amount of cobalt. Particularly satisfactory results are obtained from an alloy having a composition by weight of 46-57 percent tungsten carbide, 28-40 percent nickel, 5.1-9.5 percent chromium, 1.5-2.9 percent iron, 1.5-2.9 percent silicon, 1.0-2.3 percent boron and 0.5 percent maximum carbon, the total of constituents being 100%.
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Rutledge L. Dewayne
Wexco Corporation
Zimmerman John J.
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