| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for removing ceramic deposits 22 from a surface hole 12 of a part 10, as a concrete example a method for removing a part of ceramic film 20 depositing on a surface 16 of the part 10 provided with a cooling hole 12. <P>SOLUTION: Pulse Nd:YAG laser operated with a parameter capable of avoiding delamination, crack or other damage of the ceramic film 20 surrounding the cooling hole 12 is used in this method. The laser is operated to generate laser beam 24 to remove a part of the ceramic deposit 22 from the hole 12 and to form a surface opening in surroundings of the hole 12 with a remaining part of the ceramic deposit 22. As a concrete operation parameters, pulse frequency is about 2-20 Hz and pulse width is about 0.25-6.0 ms. <P>COPYRIGHT: (C)2004,JPO&NCIPI |
