Method of hard-facing a metal surface

Details Method of hard-facing a metal surface Method of hard-facing a metal surface

1988-03-07

1989-06-06

Goldberg, E. A.

Electric heating

Metal heating

For deposition welding

219 7612, 219 77, B23K 904

Patent

active

048374172

ABSTRACT:
A method of hard-facing is disclosed in which matrix metal is melted on the surface of a metal base member being hard-faced along with a portion of the metal base member by a non-consumable electrode moving over the matrix metal. The arc between the electrode and the matrix metal will produce a large pool of molten metal that moves along with the electrode. A constant stream of wear resistant particles, such as tungsten carbide that have been preheated to at least 400.degree. F. are continuously fed to the back side of the pool of molten metal. The heat of the arc causes the molten metal in the pool to swirl which results in the wear resistant particles being distributed more or less evenly throughout the matrix metal from the bottom to the top as it solidifies behind the electrode.

REFERENCES:
patent: 1196544 (1916-08-01), Heuser
patent: 2709213 (1955-05-01), Gibson
patent: 2841687 (1958-07-01), Richter
patent: 3573420 (1971-04-01), Johnson
patent: 3823030 (1974-07-01), Hudson
patent: 4097711 (1978-06-01), Banerjee
patent: 4224382 (1980-09-01), Brown et al.

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