Process for underwater plasma cutting of workpieces

Details Process for underwater plasma cutting of workpieces Process for underwater plasma cutting of workpieces

1979-08-14

1981-09-22

Rubinson, Gene Z.

Electric heating

Metal heating

By arc

219121PQ, 219121PU, 219137R, 219 75, B23K 900, B23K 916

Patent

active

042912172

ABSTRACT:
Workpieces, such as structural steel, are cut under water by a plasma burner having a needle electrode with the plasma arc slightly under the water level and the plasma arc being enveloped during the ignition and cutting by a compressed air sheath outside the nozzle which strongly contracts the plasma cutting arc.

REFERENCES:
patent: 2806124 (1957-09-01), Gage
patent: 2906858 (1959-09-01), Morton, Jr.
patent: 3204076 (1965-08-01), Browning
patent: 3534388 (1970-10-01), Takakiyo et al.
patent: 3567898 (1971-03-01), Fein
patent: 3619549 (1971-11-01), Hogan
patent: 3641308 (1972-02-01), Couch, Jr.
patent: 3649805 (1972-03-01), Rohrberg
patent: 4058698 (1977-11-01), Bukhovsky et al.

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