| 摘要 |
Device for resurfacing a concave face ( 2 ) of a tubular part ( 1 ) by supplying resurfacing material and energy by a laser, comprising a laser source for generating a laser beam ( 9 ), resurfacing material delivery means ( 5 ) based on hard refractory particles and metal alloy particles, in order to deliver the resurfacing material close to a resurfacing zone ( 6 ) on the concave face ( 2 ) of the tubular part ( 1 ) to be resurfaced, laser beam delivery means ( 7 ) and directing means ( 8 ) for directing the laser beam ( 9 ) into the resurfacing zone ( 6 ). The laser source is a diode laser ( 4 ) and the laser beam delivery means ( 7 ) conduct the latter over a penetration length (L) along a penetration direction and then the directing means ( 8 ) deflect the laser beam ( 9 ) into a radial direction (II-II) away from the penetration direction, so that the laser source may lie outside the tubular part ( 1 ) and the laser beam delivery means ( 7 ) may be axially engaged completely or partly in the tubular part ( 1 ).
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