Baodalazi

looks like your doing better and better thumbs up!!! makes me want to start tigging

BOOSTEd2

my welding teacher told me that it should look like that on the bottom. when i weld mild steel he tells me that it should go all the way through. im a bit confused now

what material is that on your latest welds? thickness? what are your settings. they look sweet.

Justin Olson

My latest welds pictured are 16 gauge stainless steel. I'm not sure on what grade it is. I've just started practicing welding up 1.5" schedule 40 SS. Really Fun. I can't get full penetration in 1 pass with any decent color at this point. My welding instructor wants me to do a more agressive bevel and gap the piping a bit. I'll be back at it tonight.

Regards,
Justin

BOOSTEd2

my welding teacher gives me no instruction at all. gotta do the learning on my own. oh well. the school is free anyways.

Justin Olson

Started working with stainless steel 1.5" schedule 40 piping for turbo manifolds. Here is a test piece I was working on tonight. As you can see I cut the end off of this pipe to see how well my other weld penetrated.









I really need to set this up to be backpurged and do it right. This was one of my first attemps at 1.5" sch40 SS, so I was just trying to get used to going around a piping instead of in a straight line. I need more of a crown on my welds I think.

Anyway, How large a gap would you recommend for 1.5" sch 40 304SS? What angle bevel should I put on the pipe? Also, should the bevel go all the way down, or should I leave a flat portion of the pipe end for fit up to the other pipe?

Regards,
Justin

Justin Olson

Butt weld:

Front Side


Front Side


Back Side Penetration


Back Side Penetration

9295EJ-t

iTrader: (1)

from the colors i see, you are moving to slow... from the bead i can tell you are running a good amperage..

but try moving a little faster.. you will get a better color..

what size filler rod are you using for those last welds you just poster?

boosted-EG6

hey i was just curious on what the votage is on those welds and what color tugsten you where using

Justin Olson

Those were done at around 70-75amps without backpurging. I use 3/32 thoriated RED tungsten.

Regards,
Justin