Welded structural member having high erosion resistance

Details Welded structural member having high erosion resistance Welded structural member having high erosion resistance

1983-02-15

1985-02-12

Rutledge, L. Dewayne

Stock material or miscellaneous articles

All metal or with adjacent metals

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

428683, 428684, 428685, 416241R, 415200, 415212A, 415214, 75128A, 75128B, B32B 1500

Patent

active

044991584

ABSTRACT:
A welded structural member adapted to be subjected to a flowing fluid and comprising a base member consisting mainly of iron and a coating layer formed by a build-up welding on the surface of the base member, the coating layer having a higher erosion resistance than the base member. The coating layer contains 0.03 to 0.4 wt % of C, 0.1 to 1 wt % of Si, 0.5 to 20 wt % of Mn, 1 to 5.5 wt %, of Ni, 1 to 12 wt % of Co, 8 to 23 wt % of Cr and the balance Fe. The structure of the coating layer is mainly unstable austenite.

REFERENCES:
patent: 3764303 (1973-10-01), Schmidt
patent: 4165245 (1979-08-01), Ludwig
Peckner, D. et al., Handbook of Stainless Steels, pp. 4-23, 26-6 to 26-9, (1979).
Chacour, S. A. et al., "Design Considerations for 1000 Meter Head, 500 Megawatt Single and Double Stage Reversible Pump/Turbine", ASEM Conference, pp. 17-28, (6/18/79).

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