Powder nozzle for a laser powder welding device
A laser powder and powder technology, applied in the construction or repair of workpieces, laser powder surfacing equipment, filling field, can solve the problems of clogged powder nozzles, poor transmission capacity, etc., to avoid powder accumulation and clogging, low cost, cost reduction effect
Inactive Publication Date: 2015-06-10
SIEMENS AG
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Problems solved by technology
If there are too many deviations from the preset, for example because too many non-spherical grains or grains with a diameter of less than 20 micrometers are contained, the conveyability of the powder in the powder nozzle can be deteriorated, which can cause clogging powder nozzle
Method used
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Embodiment Construction
[0024] figure 1 A powder delivery device 1 according to the invention for a laser powder deposition welding installation is shown in longitudinal section. figure 1 The powder delivery device 1 of the exemplary embodiment is designed rotationally symmetrical about a longitudinal axis 2 and has a nozzle head 3 . A cavity 6 is provided inside the nozzle head 3 , which opens at the first end 4 of the nozzle head 3 into an annular opening 7 . Via a second end 5 opposite the first end 4 , powder feed lines 8 - 1 and 8 - 2 , which connect a powder container (not shown) with the cavity 6 , reach into the nozzle head 3 . The powder connected and stored in the powder container is directed to the cavity 6 . exist figure 1 The powder conveying line 8-3 is not shown. The exact spatial positions of the powder conveying pipelines 8-1, 8-2 and 8-3 are in figure 2 shown more clearly in .
[0025] In an advantageous embodiment of the invention, the transition between the powder delivery ...
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Abstract
Powder feed device (1) comprises: a nozzle head (3) tapering along a longitudinal axis (2) of the powder feed device to a first end (4) with a cavity (6) in an interior of the nozzle head which is arranged radially to the longitudinal axis and tapers towards the first end of the nozzle head; an annular-opening which is arranged in the first end and opens for discharging a powder; and powder feed pipelines, extending through a second end of the nozzle head which opposite to the first end of the nozzle head, to the cavity for conveying the powder from a powder reservoir into the cavity. An independent claim is also included for a laser powder build-up welding device comprising a powder reservoir for a powder a powder feed device with powder feed pipelines which are connected to the powder reservoir, and a laser which is adapted to melt amount of the powder applied on a workpiece by the powder feed device.
Description
technical field [0001] The invention relates to a powder delivery device for a laser powder overlaying installation, a laser powder overlaying installation with such a powder delivery device and its use for filling, structuring or repairing workpieces. Background technique [0002] In laser powder overlay welding, fine metal powder is applied to regions of the workpiece and melted there by means of a laser and fuses with the workpiece. For this purpose, a specific amount of powder is usually continuously applied and melted, the powder being conveyed and the laser being moved on or relative to the workpiece. In this way material can be added to the workpiece so that it can be filled or repaired. For repairs, for example, damaged areas of the workpiece can be drilled out and the drilled areas can then be filled during the laser powder deposition welding process. The step-by-step construction of workpieces can also take place in this way. Such a method is of particular inter...
Claims
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IPC IPC(8): B23K26/342B05B7/22
CPCB05B7/228B23K26/1476B23K26/144
Inventor 尼古拉·阿里亚金贝恩德·布尔鲍姆托尔斯滕·约基施米夏埃尔·奥特塞巴斯蒂安·皮格特
Owner SIEMENS AG