Method of laser forming a slot

Details Method of laser forming a slot Method of laser forming a slot

1995-11-13

1998-05-05

Evans, Geoffrey S.

Electric heating

Metal heating

By arc

21912169, 416 97R, B23K 2600

Patent

active

057477698

ABSTRACT:
A method for forming a slot in a metal component having first and second opposite surfaces utilizes a first laser beam having a pulse rate and power to vaporize the metal. The laser beam is traversed across the first surface at a feed rate so that each beam pulse vaporizes the component metal at a spot. The laser beam pulse rate and feed rate are effective so that successive spots do not substantially overlap each other. The laser beam is traversed in repeated steps in a series of passes so that the spots collectively form a continuous slot to a depth below the first surface. In a subsequent step, a second laser beam is positioned in the slot to drill a hole through a base of the slot, with the second laser beam being repositioned to drill a plurality of the through holes spaced apart from each other along the length of the slot.

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