发明名称 |
Method for forming cooling holes and turbine airfoil with hybrid-formed cooling holes |
摘要 |
<p>A method of forming a cooling hole in a workpiece that includes the steps of laser-forming a blind, inwardly-tapering transition opening into a first side of the workpiece, and EDM-forming a generally cylindrical through hole to a second, opposing side of the workpiece communicating with the inwardly-tapering transition opening to form a through cooling hole communicating with the first and second sides of the workpiece. An airfoil having cooling holes formed by use of both laser and EDM is also disclosed.</p> |
申请公布号 |
EP2075410(A2) |
申请公布日期 |
2009.07.01 |
申请号 |
EP20080171897 |
申请日期 |
2008.12.17 |
申请人 |
GENERAL ELECTRIC COMPANY |
发明人 |
CROW, JOHN;ZURAWKA, JOHN;DANOWSKI, MICHAEL;PEREZ, CARLOS WALBERTO |
分类号 |
F01D5/18;B23H9/10;B23K26/38;F23R3/00 |
主分类号 |
F01D5/18 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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