Composition of abrasion-resistant material for application to a

Details Composition of abrasion-resistant material for application to a Composition of abrasion-resistant material for application to a

1986-04-01

1987-10-13

Terapane, John F.

Stock material or miscellaneous articles

All metal or with adjacent metals

Having metal particles

428564, 21914641, 21914651, B22F 704, B23K 3540, B32B 1502

Patent

active

046998489

ABSTRACT:
The invention provides a composition which is useful in applying an abrasion-resistant coating to a surface, typically by welding. The abrasion-resistant coating is preferably a mixture of tungsten carbide and an alloy. The composition is formed into a length of material extruded over a continuous metallic core, and then wound onto a spool. The composition includes both the tungsten carbide and an alloy having a melting temperature less than that of most ductile metals such as steel, alloy steel, nickel or nickel alloys. These components are mixed with an organic binder and a plasticizer. The organic binder enables the mixture to be extruded, and the plasticizer prevents the composition from becoming brittle after drying. When applied to the surface being coated, the alloy holds the particles of tungsten carbide together, and thus forms the desired coating. The alloy includes a plurality of round, or nearly round, particles. The round particles facilitate the extrusion process, and make the composition more supple. The invention also includes a method of forming the composition.

REFERENCES:
patent: 2107434 (1938-02-01), Wilson
patent: 2841513 (1958-07-01), Morrison
patent: 3359096 (1967-12-01), Jost
patent: 3980601 (1976-09-01), Marx et al.
patent: 4136230 (1979-01-01), Patel
patent: 4205218 (1980-05-01), Fukami et al.
patent: 4206017 (1980-06-01), Robillard
patent: 4306059 (1981-12-01), Yokobayashi et al.
patent: 4315883 (1982-02-01), Horikawa et al.

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