Powder delivery nozzle

Details Powder delivery nozzle Powder delivery nozzle

B - Operations, Transporting

23

K

B23K 26/14 (2006.01) B23K 26/34 (2006.01)

Patent

CA 2620072

A powder delivery nozzle (32), for a laser cladding delivery head (38), includes inner and outer sleeves (52, 54). The inner sleeve (52) defines a central passage enabling a laser beam to pass along the nozzle axis. The sleeves (52, 54) define a multi-branched longitudinally extending powder flow- path system (52, 57, 58, 59, 60, 62). The system (52, 57, 58, 59, 60, 62) includes a first set of passages (59), and a second set of passages (60), with the passages (59) of the first set angularly offset from the passages (60) of the second set. Each passage (59) of the first set communicates with two passages (60) of the second set by a circumferential passage or gallery (58) such that powder from each passage (59) of the first set passes through to two passages (60) of the second set. The same form of communication is able to apply to any other set.

La présente invention concerne une buse de distribution de poudre (32), pour une tête de distribution de revêtement à faisceau laser (38), qui comprend des manchons interne et externe (52, 54). Le manchon interne (52) définit un passage central permettant à un faisceau laser de passer le long de l'axe de la buse. Les manchons (52, 54) définissent un système de chemin d~écoulement de poudre se prolongeant longitudinalement à plusieurs branches (52, 57, 58, 59, 60, 62). Le système (52, 57, 58, 59, 60, 62) comprend un premier ensemble de passages (59), et un second ensemble de passages (60), les passages (59) du premier ensemble étant angulairement excentrés par rapport aux passages (60) du second ensemble. Chaque passage (59) du premier ensemble communique avec deux passages (60) du second ensemble par un passage ou une galerie circulaire (58) de telle sorte que la poudre de chaque passage (59) du premier ensemble passe à travers deux passages (60) du second ensemble. La même forme de communication peut s'appliquer à n'importe quel autre ensemble.

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