Metal treatment – Process of modifying or maintaining internal physical... – With measuring – testing – or sensing
Patent
1997-09-17
1999-11-16
Ip, Sikyin
Metal treatment
Process of modifying or maintaining internal physical...
With measuring, testing, or sensing
148512, 148525, 21912161, 21912162, 21912165, 21912166, C21D 154
Patent
active
059850566
ABSTRACT:
The present invention is directed toward a process for laser alloying of a workpiece and an apparatus for carrying out said process. The method embodiment of the present invention is directed toward a process for forming an alloy in the surface of a metal substrate comprising the steps of applying an alloy precursor material at a controlled rate to the surface of the substrate and then melting the surface and the precursor alloy material by the application of a laser beam in order to form an alloy of the precursor alloy material and the substrate. The method embodiment of the present invention further comprises the steps of measuring one or more parameters indicative of alloying depth, controlling the rate of precursor application in response to at least one of the measured parameters, and allowing the allow to solidify. Other method embodiments of the present invention are directed towards the measurement of specific parameters indicative of alloying depth, such as workpiece temperate or emission spectra data from the laser/surface interface. Other embodiments of the present invention are directed toward controlling laser beam power in response to a measured parameter.
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Dahotre Narendra B.
McCay Mary Helen
McCay Thurman Dwayne
Ip Sikyin
The University of Tennessee Research Corporation
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