Method and apparatus for repairing metal in an article
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United States of America Patent
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Mar 8, 1988
Issued Date -
N/A
app pub date -
Feb 17, 1987
filing date -
Oct 1, 1984
priority date (Note) -
Expired
status (Latency Note)
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Abstract
In the repair of a metallic article portion, a metal powder and laser beam are applied concurrently, the laser beam being applied in a power density range of 10.sup.4 to 10.sup.6 watts per square centimeter at an interaction time between the laser and the article and powder of 0.005-2 seconds to generate a repair layer. Apparatus for delivering a consistent, continuous flow of powder comprises the combination of an enclosed powder reservoir including means to introduce a gas under pressure, a mechanical means to feed powder into a conduit, a conduit vibrating means, and a fluid-cooled powder delivery nozzle.
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