Apparatus for and method of plasma pre-weld and post-weld metal

Details Apparatus for and method of plasma pre-weld and post-weld metal Apparatus for and method of plasma pre-weld and post-weld metal

1978-02-03

1980-02-05

Reynolds, Bruce A.

Electric heating

Metal heating

By arc

219137R, 148 95, 219 75, B23K 900

Patent

active

041874099

ABSTRACT:
A conventional plasma arc cutting torch in which the plasma gas passageway of a cutting tip is flared about 90 degrees outwardly, the cutting torch angle-to-work is about 45 degrees, the torch stand-off from the work is about 3/16 inch, and the torch travel speed is about 60 inches/minute to obtain metal preparation of consistent width and depth dependent on the work metal and its thickness. Changes in these characteristics, when limited to established parameters, varies the width and depth of the resulting metal preparation which remains constant for each combination of changes.

REFERENCES:
patent: 3050616 (1962-08-01), Gage
patent: 3204075 (1965-08-01), Browning
patent: 3584184 (1971-06-01), Tylko et al.
patent: 3596047 (1971-07-01), Maniero et al.
patent: 3660630 (1972-05-01), Sunnen et al.
patent: 3928745 (1975-12-01), Demars et al.
Plasma Arc Gouging of Aluminum, pp. 954-959 of "Welding Journal" Nov. 1976.

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