Laser barrier material and method of laser drilling

Details Laser barrier material and method of laser drilling Laser barrier material and method of laser drilling

1990-09-14

1991-09-17

Albritton, C. L.

Electric heating

Metal heating

By arc

21912185, B23K 2600

Patent

active

050497227

ABSTRACT:
PTFE-loaded wax is used in the laser drilling of holes in hollow turbine blades to prevent strike-through of the beam to an opposite wall of a cavity in the blade. The PTFE-loaded wax is poured or injected in molten form into the cavity prior to laser-drilling, and is subsequently removed by steaming.

REFERENCES:
patent: 3410979 (1968-11-01), Larsson
patent: 4156807 (1979-05-01), Howard et al.
patent: 4447734 (1984-05-01), Kusumegi et al.
patent: 4873414 (1989-10-01), Ma et al.

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