Method and apparatus for forming blind slots including laser mel

Details Method and apparatus for forming blind slots including laser mel Method and apparatus for forming blind slots including laser mel

1996-04-12

1998-05-05

Walberg, Teresa J.

Electric heating

Metal heating

By arc

21912185, 21912168, 21912169, 148202, 266 51, B23K 2614

Patent

active

057477710

ABSTRACT:
A method of machining a blind slot 3 in a workpiece 2 comprises heating the surface of the workpiece 2 above its melting temperature with, for example, a beam of laser energy and directing at least two gas streams 5, 6 such that they together with the base of the slot 3, create a vortex having a predetermined rotational direction for removing molten material from the slot 3.

REFERENCES:
patent: 3556600 (1971-01-01), Shoupp et al.
patent: 3597578 (1971-08-01), Sullivan et al.
patent: 3866398 (1975-02-01), Vernon, Jr. et al.
patent: 3966504 (1976-06-01), Sipek et al.
patent: 4303824 (1981-12-01), Morgan et al.
patent: 4467171 (1984-08-01), Ramos
patent: 5220149 (1993-06-01), Neidhardt
WPI **abstract**, EP 0 600249 A1; Nov. 1993, J. Herrmann (assignee: Linde AG).
Patent Abstracts of Japan, vol. 007, No. 055 (M-198), 5 Mar. 1983 & JP-A-57 202969 (Ibigawa Denki Kogyo KK), 13 Dec. 1982, *abstract*.

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