| 摘要 |
A method of machining a workpiece having a protective surface coating, the said method comprising directing a laser beam at the surface of a workpiece to be cut, welded or drilled by the laser beam at an angle of inclination with respect to the said surface; directing a jet of fluid towards the point of incidence of the laser beam on the surface of the workpiece; characterised in that the said jet of fluid is angled with respect to the said laser beam. |
