초록 ▼

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 r

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.

대표청구항 ▼

A method of producing a slip-resistant article be bonding raised configurations of a compatible material at select locations on the article surface, the method comprising the steps of: a) providing a base plate having a surface portion; b) providing a nozzle having a high power radiant energy source

A method of producing a slip-resistant article be bonding raised configurations of a compatible material at select locations on the article surface, the method comprising the steps of: a) providing a base plate having a surface portion; b) providing a nozzle having a high power radiant energy source first chamber including focusing means and an orifice for said focusing means; c) providing a powder feeding tube independent of said nozzle and having an end portion positioned below said nozzle for injecting particles of a material compatible with the base plate material; d) providing said nozzle with a second chamber for supplying a suppression gas coaxial of said first chamber and radially adjacent thereto and around said focusing means and separated therefrom and having an orifice substantial coplanar with the orifice of said said focusing means; e) projecting for a preset time period an irradiating beam having a point of impingement at a predetermined location on said surface portion by actuating said energy source; f) injecting substantially simultaneously with step e) a predetermined quantity of particles into a portion of said irradiating beam at a point lying a distance away from the said point of impingement of said beam on said predetermined location on said surface portion; g) projecting simultaneously with steps e) and f) a suppression gas downwardly about said irradiation beam and outwardly therefrom to prevent said particles from being directed upwardly toward said focusing means to prevent interference of said particles with said focusing means and to deflect said particles downwardly toward said point of impingement of said beam by actuating said suppression gas supply means; h) allowing the injected particles to interact with said beam for a time period sufficient to cause partial melting of a substantial number of particles; i) transporting particles treated in step h) to the point of impingement of said beam on said predetermined location on said surface portion; j) causing a relative motion between said surface portion and said energy source; k) allowing partially melted particles on said predetermined location to bond with the surface material thereby forming a raised configuration thereon; and l) repeating steps d)-k) for forming another raised configuration on another location on said surface portion for thereby forming a slip-resistant article.