Powder mixtures for wear resistant facings and products produced

Details Powder mixtures for wear resistant facings and products produced Powder mixtures for wear resistant facings and products produced

1981-05-20

1983-11-08

Hearn, Brian E.

Specialized metallurgical processes, compositions for use therei

Compositions

Loose particulate mixture containing metal particles

75255, 75240, 75248, C22C 2900

Patent

active

044140290

ABSTRACT:
This invention relates to mixtures of tungsten carbide, niobium metal, and molybdenum metal powders for use in the hardfacing of drill pipe couplings used in earth boring operations. It has been found that the addition of small amounts of niobium metal alone, or in combination with molybdenum, are effective to substantially submerge the tungsten carbide particles in the weld pool produced during hardfacing while, also, minimizing the occurrence of cracks which may be produced as the weld pool freezes.

REFERENCES:
patent: 3329487 (1967-07-01), Sowko et al.
patent: 3334975 (1967-08-01), Quaas et al.
patent: 3379503 (1968-04-01), McKenna
patent: 3768984 (1973-10-01), Foster, Jr.
patent: 3800891 (1974-04-01), White et al.
patent: 4228339 (1980-10-01), Scales et al.
patent: 4243727 (1981-01-01), Wisler et al.
Chemical Abstracts; vol. 77, 1972, p. 232; No. 91817a.

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