Laser barrier material and method

Details Laser barrier material and method Laser barrier material and method

1996-07-02

1998-06-16

Evans, Geoffrey S.

Electric heating

Metal heating

By arc

B23K 2600, B23K 2618

Patent

active

057674825

ABSTRACT:
A laser barrier material for preventing far-wall strike during a laser drilling operation comprising a finely divided crystalline material, preferably a metal salt which is thermally stable and possesses a high melting point such as sodium chloride. The barrier material may be introduced into the interior of a component by pouring through an aperture or by making it into a paste with water and injecting it. The material is then subsequently removed by washing the component with water.

REFERENCES:
patent: 3596045 (1971-07-01), Steigerwald
patent: 4873414 (1989-10-01), Ma et al.
patent: 5011626 (1991-04-01), Ma et al.
patent: 5049722 (1991-09-01), Corfe et al.
patent: 5140127 (1992-08-01), Stroud et al.
patent: 5222617 (1993-06-01), Gregory et al.
H.W. Fowler and F.G. Fowler, The Concise Oxford Dictionary of Current English, 8.sup.th Edition by R.E. Allen, p. 1065.

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