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Amps

Posted: Wed Oct 01, 2014 12:25 pm
by chadmh91
I am getting ready to take a 2" SCH80 pipe test(carbon & stainless) can I get some advice & how many amps I should have for welding both of the alloys? Thanks in advance

Re: Amps

Posted: Wed Oct 01, 2014 5:06 pm
by Artie F. Emm
I did a search on videos, came up with this:
http://welding-tv.com/?s=pipe

There are a number of pipe test videos available. How soon is your test, and how are you preparing for it?

Good luck on it!

Re: Amps

Posted: Fri Oct 03, 2014 1:03 pm
by Rick_H
3/32" tung, 3/32"-1/8" gap, 3/32"-1/8" filler, I like 4 small tacks, feather if needed or allowed, clean with a brush between passes and let it cool between passes till you van almost touch it.

80-85 root, 95 hot, 105 cover...

They should give you a wps if this is to any standard.

Don't forget to breathe and have fun!

Re: Amps

Posted: Mon Oct 06, 2014 9:16 am
by chadmh91
I thought when welding stainless the amps had to be lower than welding carbon steel

Re: Amps

Posted: Mon Oct 06, 2014 12:17 pm
by Rick_H
chadmh91 wrote:I thought when welding stainless the amps had to be lower than welding carbon steel
You may find your 10% lower on stainless...I use those settings all the time on both and pass xray...are you walking the cup or looking for a key hole and dabbing?

Travel speed and expierence will alter settings. If this is for a test/cert the wps will tell you a range.

Re: Amps

Posted: Mon Oct 06, 2014 1:20 pm
by chadmh91
Its pretty hard to walk the cup on 2" pipe so I will probably dab it for both

Re: Amps

Posted: Tue Oct 07, 2014 12:31 am
by Rick_H
True..but its a good skill. During the prep for me ASME IX cert they requires we walk on 2" pipe, it does help you learn to control torch angle.

However in he real work I typically only walk on 4"+ diameter.