Electric heating – Metal heating – Cutting or disintegrating
Patent
1984-04-11
1987-03-31
Pellinen, A. D.
Electric heating
Metal heating
Cutting or disintegrating
148 95, 219 69W, 219 70, 219 72, 219 74, B23K 3504, B23K 3522
Patent
active
046544968
ABSTRACT:
An improved system for underwater oxy-arc cutting of a work piece, and a unique cutting rod used in such cutting work. This rod has an outer ferrous metal tube which contains a metal liner, which liner may in turn be comprised of a plurality of metal wires spaced in a circular pattern along the inner circumference of the tube. Oxygen is passed through a central passageway within the tube near but less than at sonic flows to avoid arc bounce. DC current (200-400 amperes) flows between the rod and work piece to form an arc consuming the rod at a rate between about 0.09-0.20 inches per second. The cross-sectional areas of the tube and the wires are about equal and the central passageway is less than one-half of either the tube or wires in cross-sectional areas. The rod is made (non-thermic) by sealing the tube about the wires or by use of aluminum or copper wires. Optimized parameters in underwater cutting of the work piece is applied, i.e. cutting rate, oxygen consumption, current magnitude and rod consumption. To minimize the consumption of the cutting rod, a non-thermic rod is used so that, upon arc interruption either no burning or slow burning ensues, even with continued oxygen flow.
REFERENCES:
patent: 2210640 (1940-08-01), Swafford
patent: 2802930 (1957-08-01), Ronay
patent: 3260076 (1966-07-01), Humberg
patent: 3507230 (1970-04-01), Sieb
patent: 3507231 (1970-04-01), Meir
patent: 3591758 (1971-07-01), Clucas
patent: 4069407 (1978-01-01), Bower
patent: 4147333 (1979-04-01), Wirth
patent: 4173499 (1979-11-01), Holemann
patent: 4182447 (1980-06-01), Bower
patent: 4416444 (1983-11-01), Bower
patent: 4437649 (1984-03-01), Rieppel et al.
"Marine Salvage Operations" Cornell Maritime Press Inc., 1960 at pp. 207-208.
"Commercial Oil-Field Diving", Cornell Maritime Press, 1971 at pp. 151-169.
Crawford William W.
DeMarsh Peter L.
DeMarsh Peter L.
Evans Geoffrey S.
Pellinen A. D.
LandOfFree
Underwater oxy-arc cutting system using a non-thermic cutting ro does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Underwater oxy-arc cutting system using a non-thermic cutting ro, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Underwater oxy-arc cutting system using a non-thermic cutting ro will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2214125