A METHOD OF MACHINING A GAS TURBINE ENGINE COMPONENT

摘要

A method of machining a nickel containing alloy gas turbine engine component (34) comprises applying a material removal gas comprising gaseous carbon monoxide at a nickel carbonyl gas forming temperature such as 50 to 60° C to a surface of the component to form a nickel carbonyl gas, and thereby remove a surface layer from at least part of the component.