Method and apparatus for preplacement of metal filler powder and flux powder for laser deposition
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United States of America Patent
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Jun 12, 2018
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N/A
app pub date -
Aug 18, 2014
filing date -
Feb 7, 2014
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Abstract
Forming respective packets (20, 21, 46, 50, 52, 70, 82, 84) of filler metal powder (24) and flux powder (26) for adjacent placement on a working surface (30) for laser deposition of the metal. Each packet may be formed of a sacrificial sleeve (22) or adjacently seamed sheets (72A-D), which may include flux fibers such as alumina, zirconia, basalt, or silica. A packet (56) of flux may be disposed centrally inside a packet (56) of metal or vice versa. A connected stack (70, 82, 84) of three packets (74A-C, 86A-C) may be formed by seaming (76A-B) four stacked sheets (72A-D) around common edges and filling the three resulting spaces between the sheets with a respective vertical sequence of metal/flux/metal or flux/metal/flux powders. Quilting and intermediate stitching may provide for precise control of material distribution and facilitate feeding of material.
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