Steam turbine having applied novel erosion resistant surfaces an

Details Steam turbine having applied novel erosion resistant surfaces an Steam turbine having applied novel erosion resistant surfaces an

1989-08-07

1991-09-17

Shaw, Clifford C.

Electric heating

Metal heating

For deposition welding

219137WM, B23K 904

Patent

active

050497162

ABSTRACT:
Methods for providing erosion resistant surfaces to carbon steel turbine components are provided by this invention. The methods include welding a steel weldment comprising at least 12 wt. % Cr. on to a carbon steel steam turbine component at a welding speed of about 24-52 inches, 61-132 cm, per minute in a nominal first pass thickness of less than about 0.1 inches, 0.25 cm. Preferred flux-cord-arc welding (FCAW) techniques are disclosed for vertical down, overhead, horizontal and flat surfacing positions.

REFERENCES:
patent: 4521663 (1985-06-01), Kesting
patent: 4897519 (1990-01-01), Clark et al.

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