Electric heating – Metal heating – By arc
Patent
1993-06-25
1994-04-12
Paschall, Mark H.
Electric heating
Metal heating
By arc
219 75, 2191215, 21912148, B23K 1000, B23K 9167
Patent
active
053028040
ABSTRACT:
A welding torch for plasma arc welding apparatus has an inert gas applied circumferentially about the arc column externally of the constricting nozzle so as to apply a constricting force on the arc after it has exited the nozzle orifice and downstream of the auxiliary shielding gas. The constricting inert gas is supplied to a plenum chamber about the body of the torch and exits through a series of circumferentially disposed orifices in an annular wall forming a closure at the forward end of the constricting gas plenum chamber. The constricting force of the circumferential gas flow about the arc concentrates and focuses the arc column into a more narrow and dense column of energy after exiting the nozzle orifice so that the arc better retains its energy density prior to contacting the workpiece.
REFERENCES:
patent: 4125754 (1978-11-01), Wasserman et al.
patent: 4389559 (1983-06-01), Rotolico et al.
patent: 4762977 (1988-08-01), Browning
patent: 5194715 (1993-03-01), Severance, Jr. et al.
patent: 5233154 (1993-08-01), Horai et al.
McGee William F.
Rybicki Daniel J.
Broad, Jr. Robert L.
Manning John R.
Miller Guy M.
Paschall Mark H.
The United States of America as represented by the Administrator
LandOfFree
Gas arc constriction for plasma arc welding does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Gas arc constriction for plasma arc welding, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gas arc constriction for plasma arc welding will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2100363