Method for removing coating material from a cooling hole of...

B - Operations – Transporting – 23 – K

Patent

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Details

B23K 26/02 (2006.01) B23K 26/04 (2006.01) B23K 26/08 (2006.01) B23K 26/38 (2006.01) F01D 5/00 (2006.01)

Patent

CA 2462846

A process is provided for laser drilling (3) to remove coating material obstructing cooling holes (1) of a gas turbine component by utilizing a CNC component program which is preprogrammed with the general location of the cooling holes (1) of a component to move a machine vision system (7, 6, 8) and component relative to each other to each cooling hole (1) location for a series of cooling holes (1), determining the actual location for each cooling hole (1) and storing in the memory of the CNC or a data storage device the actual locations for the cooling holes (1) for the series of cooling holes (1), followed by laser drilling (3) based on the actual location of the cooling holes (1) stored in the memory of the CNC or the data storage device to remove the coating material obstructing the cooling holes (1) for the series of cooling holes (1).

L'invention concerne un procédé de perçage laser (3) permettant de retirer un matériau de revêtement obstruant des orifices de refroidissement (1) d'un composant de turbine à gaz, qui implique l'utilisation d'un programme CNC de réalisation du composant, qui est établi à l'aide de l'emplacement général des orifices de refroidissement (1) du composant, de façon à produire un mouvement relatif entre un système de vision artificielle (7, 6, 8) et le composant, pour obtenir une coïncidence avec l'emplacement de chaque orifice de refroidissement (1) d'une série d'orifices de refroidissement (1), la détermination de l'emplacement réel de chaque orifice de refroidissement (1) et le stockage, dans la mémoire de la machine CNC ou dans un dispositif de stockage de données, des emplacements réels des orifices de refroidissement (1) de la série d'orifices de refroidissement (1), et, enfin, un perçage laser (3) fondé sur l'emplacement réel des orifices de refroidissement (1) stockés dans la mémoire de la machine CNC ou dans le dispositif de stockage de données, perçage dont le but est d'enlever le matériau de revêtement obstruant les orifices de refroidissement (1) de la série d'orifices de refroidissement (1).

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