High power fiber laser effusion hole drilling apparatus and method of using same
US10857627B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 9, 2018 |
| Grant date | Dec 8, 2020 |
| Priority date | — |
| Expiry date | Oct 7, 2038 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24273
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A fiber laser-treated workpiece is configured with a body having a discontinuous surface which defines a plurality of spaced through-going passages so that each passage is delimited by a peripheral layer having a surface characteristic which includes a recast layer or one or more microcracks or a combination thereof. The passages are provided by a high power Yb fiber laser operating in a pulsed regime and configured to output either a single pulse per an entire passage or a train of pulses per the passage. The Yb fiber laser is so configured that, if formed, the recast layer and micro-crack each are smaller than respective standards in an airspace industry.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.