6G 2 inch schedule 80 ua-41 pipe welding test with 309 filler for root along with argon purge.
1/8" gap and 3/32 filler rod for root using keyhole dip technique.
both freehand and cup walking techniques are used.
6G 2 inch sched 80 ER309L Root pass with argon purge
This welding test as also known as the ua41 and this video demonstrates the root pass with argon purge and 309 filler using the dip keyhole technique.
a 1/8 gap with a 3/32 filler was useed
This video shows lots of beads during an exercise I call "the aluminum drill".
In sports, there are drills designed to improve certain skills.
Because Aluminum requires so much more feeding of the wire than steel, this drill will help that filler wire feeding hand to get up to speed.
This video shows the backstep technique on carbon steel sheet metal.
Backstepping can be helpful in preventing distortion.
