Stock material or miscellaneous articles – All metal or with adjacent metals – Having metal particles
Patent
1991-08-12
1994-11-29
Walsh, Donald P.
Stock material or miscellaneous articles
All metal or with adjacent metals
Having metal particles
428551, 428552, 428557, 428558, 428565, 404 19, 404 20, 404 21, B22F 704
Patent
active
053689470
ABSTRACT:
An article having a slip-resistant surface and method of producing the same includes metallurgically bonding raised bead-like configurations of a compatible material at select locations on the article surface. The method includes injecting, substantially simultaneously with projecting a high power radiant energy beam, powder particles into a portion of the beam lying a distance away from the point of impingement on the surface portion of the article. The particles interact with the beam for a time period sufficient to cause at least partial melting of a substantial number of particles which are then transported to a selected point on the surface portion. The partially melted particles, along with completely and/or any substantially unmelted particles, are allowed to bond with the surface material thereby forming a raised configuration thereon. The process is repeated for forming another raised configuration at another selected location on the surface portion for thereby forming a slip-resistant article. The configurations include an upright portion of substantially all sintered particles and extending a substantial distance above the surface portion, and an anchor portion which is embedded a slight distance into the surface portion and includes a weld of the base material uninterrupted with the sintered particles. The anchor portion has a height dimension which is substantially less than the height dimension of the configuration.
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Carroll Chrisman D.
Monahan Thomas J.
The Penn State Research Foundation
Walsh Donald P.
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