Method of controlled remelting of or laser metal forming on the surface of an article
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United States of America Patent
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Sep 8, 2009
Issued Date -
N/A
app pub date -
Aug 18, 2004
filing date -
Feb 20, 2002
priority date (Note) -
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Abstract
A method for controlled remelting of or laser metal forming on the surface (5) of an article (1) can include moving a light source and a signal capturing apparatus over the article (1). The light source having a specific power can be used to melt the surface (5) of the article (1) locally and to form a melt pool (7). Thereby an optical signal (13) is captured by the signal capturing apparatus from the melt pool (7), and the monitored optical signal (13) is used for the determination of temperature and temperature fluctuations as properties of the melt pool (7). Furthermore, a control system (16) with a feedback circuit is used to adjust at least one process parameter such as the power of the light source such that desired melt pool properties are obtained. Subsequently the melt pool (7) solidifies.
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