Variable-polarity plasma arc welding process and device

Details Variable-polarity plasma arc welding process and device Variable-polarity plasma arc welding process and device

1998-12-04

2000-02-15

Paschall, Mark

Electric heating

Metal heating

By arc

21912145, 21912154, 21912157, B23K 1000

Patent

active

060255706

ABSTRACT:
The invention relates to a plasma arc welding process and a plasma arc welding device for aluminum and its alloys, which process comprises at least one step of initiation of a pilot arc by means of an auxiliary current which is delivered by an auxiliary current source and flows in a pilot-arc circuit, one step of feeding with plasma gas, one step of initiation of a main arc by means of a main current which is delivered by a main current source and flows in a main circuit, one step of cyclic variation of the polarity of the main current so as to obtain at least one phase of descaling the material to be welded with a first current polarity and at least one phase of welding the material with a second current polarity, and in which process the supply of auxiliary current to the pilot-arc circuit is stopped during the descaling phase and the main circuit and to the pilot-arc circuit are supplied with main current.

REFERENCES:
patent: 4555612 (1985-11-01), Collins et al.
patent: 5045667 (1991-09-01), Iceland et al.
patent: 5466905 (1995-11-01), Flowers et al.

Affiliated with

Also associated with

Rating

Variable-polarity plasma arc welding process and device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Variable-polarity plasma arc welding process and device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Variable-polarity plasma arc welding process and device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1907493