Welding at pressures greater than atmospheric pressure

Details Welding at pressures greater than atmospheric pressure Welding at pressures greater than atmospheric pressure

H - Electricity

05

B

327/38

H05B 7/00 (2006.01) B23K 9/00 (2006.01)

Patent

CA 1108244

A B S T R A C T When metal inert gas (MIG) welding is carried out at normal atmospheric pressure, the electrode is made positive with respect to the workpiece because the use of a negative electrode gives little penetration. In undersea welding, as the pressure increases the arc stability and metal transfer in MIG welding become erratic and there is copious fume evolution. According to the present invention, MIG welding at pressures greater than 7 bars is carried out with the electrode negative with respect to the workpiece and with an electrode wire of diameter not greater than 1.4mm; the slope of the power supply, as seen from the welding arc, is preferably between 6 and 15V/l00A, which is higher than the 3 to 4V/l00A used in positive-electrode MIG welding at normal atmospheric pressure.

309475

Affiliated with

Also associated with

Rating

Welding at pressures greater than atmospheric pressure does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Welding at pressures greater than atmospheric pressure, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Welding at pressures greater than atmospheric pressure will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-274714