Boride hard-facing
AssigneeMaterials Development Corporation
InventorLee B. Danzey, Jr.
Life of this patent
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Abstract
Introduction of boron as a hardening agent for metal hard-facing and the like is achieved by way of welding practices involving a consumable slender rod or wire filler member of relatively ductile material into the surface of which boron has been diffused to leave relatively brittle boride about a relatively ductile core, the slender borided welding filler member lending itself to uncomplicated handling because of core ductility while at the same time exhibiting a high percentage of borided material from which a hard facing can be developed when it is melted and bonds with metal of a body which is to be hard-faced.
Claims3
The method of hard-facing which comprises boriding the exterior of an elongated ductile-metal element to less than its full cross-sectional depth and thereby forming an elongated composite member in which hard boride surrounds an elongated ductile core of unreacted metal, and feeding said composite member to the sites of surface-melting of a metal body by a welding torch and thereby melting said composite member and bonding the materials thereof as a layer of hard-facing metal on said body at said sites.
Dependencies are inferred from the claim text.