B - Operations – Transporting – 23 – K
Patent
B - Operations, Transporting
23
K
117/61, 13/7
B23K 20/00 (2006.01) B22F 3/105 (2006.01) B22F 7/08 (2006.01) B23K 26/34 (2006.01) B29C 67/00 (2006.01) F16C 33/24 (2006.01)
Patent
CA 1229959
COMPOSITE BEARING STRUCTURE OF ALTERNATING HARD AND SOFT METAL, AND PROCESS FOR MAKING THE SAME ABSTRACT OF THE DISCLOSURE A bearing structure having a substrate and a bearing surface of alternating, spaced, hard metal and soft metal areas is disclosed. The hard metal is metallurgically bonded to the base metal substrate by rapidly melting in a predetermined pattern a powdered hardfacing composition disposed on a bearing precursor surface of the base metal substrate. The melting is accomplished by scanning with a laser beam, or like high intensity, concentrated energy source. The melt is allowed to solidify rapidly. Gaps formed between isolated areas of the solidified hard metal are filled with a melt of a soft metal. After solidification of the molten soft metal, the resulting composite structure is machined to a desired depth to provide the composite bearing surface.
449114
Gowling Lafleur Henderson Llp
Smith International Inc.
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