Surface protection method and article formed thereby

Details Surface protection method and article formed thereby Surface protection method and article formed thereby

B - Operations, Transporting

22

F

76/21, 255/68, 1

B22F 7/08 (2006.01) B22D 19/06 (2006.01) B22D 19/08 (2006.01) C23C 4/06 (2006.01) C23C 4/18 (2006.01) C23C 30/00 (2006.01)

Patent

CA 1295322

ABSTRACT OF THE DISCLOSURE The disclosed invention describes a method for cladding sur- faces of an earth boring apparatus, or the like, with a hardfacing material having an entrained, or encapsulated, heavy metal refrac- tory carbide. The method includes heating the surface to the incipient melting temperature and applying a molten super-alloy matrix material that has a melting temperature below the melting temperature of the carbide. The super-alloy, in a powder form, is pre-mixed with the carbide material, also in a powder form, such that, when the molten surface and the molten super-alloy cool, they form a metallurgical bond, at the surface, with the carbide material mechanically retained within the solidified matrix material.

555637

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