Hardsurfaced power-generating turbine components and method of h

Details Hardsurfaced power-generating turbine components and method of h Hardsurfaced power-generating turbine components and method of h

1987-06-22

1989-03-21

Yee, Deborah

Stock material or miscellaneous articles

All metal or with adjacent metals

Composite; i.e., plural, adjacent, spatially distinct metal...

228119, 228208, 428679, 428939, B22B 1500

Patent

active

048142360

ABSTRACT:
A laminated metal structure and a method of hardsurfacing stainless steel base metals are herein provided for resisting wear of steam turbine components at elevated temperatures. The laminated metal structure employs a buttering layer, sandwiched between the stainless steel base metal and a hardsurfacing layer. The buttering layer consists essentially of nickel or a nickel-based alloy and is selected to have a coefficient of thermal expansion which is between that of the base metal and that of the hardsurfacing material. This improved structure produces a relatively crack-free deposit that can provide greater service life for turbine components with less downtime due to repairs.

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patent: 3804602 (1974-04-01), Simoudis
patent: 4418124 (1983-11-01), Jackson et al.
patent: 4665996 (1987-05-01), Foroulis et al.
patent: 4677034 (1987-06-01), Luthra
T. B. Jefferson et al., Metals and How to Weld Them, James F. Lincoln, Arc Welding Foundation, Cleveland, OH, Feb. 1983.
Birchfield, Part Worn or Undersized? Metal Overlays Save the Day, Welding Design and Fabrication, pp. 38-48, Feb. 1985.

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