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US 4,376,793 AGranted
Process for forming a hardfacing surface including particulate refractory metal
AssigneeMetallurgical Industries, Inc.
InventorHewy E. Jackson
Life of this patent
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Abstract
There is disclosed a process for forming a hardfacing surface including particulate refractory metal carbide by directing a plasma transferred arc against a wear surface of an element and passing a powder comprised of refractory metal carbide particles admixed in a suitable hard metal matrix through the plasma arc to thereby form on the wear surface of the element a hardfacing surface including particulate refractory metal carbide of a thickness of from 0.04 to 0.25 inches.
Claims17
A process for forming a hardsurfacing including refractory metals carbide particles on a wear surface of an element which comprises:
- (a) positioning a plasma arc proximal to a wear surface of an element;
- (b) passing a hardfacing powder through said plasma arc to form a hardfacing surface on said element;
- the hardfacing powder comprising refractory metal carbide particles and a hard metal matrix, the refractory metal carbide appearing in amounts of approximately 50 to 65% by weight of the hard metal and refractory metal carbide;
- the hard metal consisting by weight of approximately 0% to 2.3% carbon;
- 22% to 37% chromium;
- 0% to 20% nickel with the balance iron.
3 more elements
Dependencies are inferred from the claim text.