Abstract: A material is described for preventing the occurrence of damage to the backwall of a cavity within a component during laser drilling of holes into said component. The material comprises an acrylic resin having polytetrafluoroethylene dispersed within it. A method for preventing such backwall damage occurring during laser drilling using this material is also described.
Abstract: A method is described for the separation of metal articles from surplus metal by the use of a laser. The articles may be cast or wrought. Several examples are given of gas turbine engine components being separated from a gating system by the use of a YAG laser. Benefits include lack of heat generation and, therefore, little or no distortion in the article.
Type:
Grant
Filed:
December 15, 1989
Date of Patent:
November 12, 1991
Assignee:
AE Turbine Components Limited
Inventors:
Michael Tinsley, Antony Johns, Jonathan D. Philby