LASER DRILLING METHODS OF SHALLOW-ANGLED HOLES
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United States of America Patent
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app pub date -
Jul 19, 2011
filing date -
Jul 19, 2011
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Abstract
A method for providing a shallow-angled hole through a metal component, such as a turbine combustor, includes a step of applying a pulse laser beam to drill a section of the hole substantially within a thermal barrier coating of the component in a trepanning concept. A further step is conducted to apply the pulse laser beam through the completed section of the hole to further drill through a base metal of the component to complete the formation of the hole extending through the component.
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