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Method for cleaning and stripping a turboshaft engine blade using a pulsed laser

  • US 9,415,462 B2
  • Filed: 05/02/2012
  • Issued: 08/16/2016
  • Est. Priority Date: 05/02/2011
  • Status: Active Grant
First Claim
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1. A method for cleaning and stripping a turboshaft engine blade comprising a superalloy body covered with a coating, comprising:

  • identifying a portion of the coating to remove, the coating including a metal layer covering the body of the blade and an external ceramic layer covering the metal layer; and

    machining, at least partially, the coating of the blade using a pulsed laser to remove at least the external ceramic layer of the coating,wherein a feed rate of the pulsed laser and a pulse frequency of the pulsed laser are parameterized such that a machined surface of the blade has a roughness of 4 μ

    m to 10 μ

    m.

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