Laser Cladding on Low Heat Resistant Substrates
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United States of America Patent
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app pub date -
Jun 20, 2006
filing date -
Jun 20, 2005
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Abstract
This invention relates to laser cladding of components used in high temperature-corrosive applications, such as those associated with metallurgical vessels' lances, nozzles and tuyeres, for extending their service life under such severe conditions. In particular, this invention relates to a method for applying a high melting point material onto a substrate, said substrate having a melting point temperature below the melting point temperature of the high melting point material, comprising: (a) moving a laser beam generated from a laser over the surface of said substrate, said laser beam comprised of wavelengths from about 300 to about 10,600 nanometers; (h) providing a metal, alloy, or metal-alloy composite powder to the surface of said substrate; and (c) generating sufficient power to the laser to superficially heat said substrate and to effect a fusion bond between the metal, alloy or metal-alloy composite powder and the surface of said substrate.
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