Help with Welds

An area for general welding posts that don't seem to fit anywhere else.
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Jeff L
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Help with Welds

Post by Jeff L » Sat Apr 05, 2014 7:55 pm

I was welding some Bungs on an Oil Tank,all was fine.Today I welded the last one on,& the Weld Pool was spitting & poping all over the Place.Needless to say the weld is riddled with Holes.I grabbed a piece of Scrap...saned it down, tried to put a Bead down, same result.Took another piece,sanded & wiped with denatured Alcohol...no better.Took the Torch apart,cleaned the Cup,took some of the Tungsten off & reground,even turned up the Gas thinking maybe the Line had a Hole in it & wasn't getting Gas to the Torch...nothing helped.I don't know what to look for next.Here is a Pic of what The Welds look like on the piece scrap Steel.
weld.JPG
weld.JPG (78.61 KiB) Viewed 1165 times
...the Machine was set at 70Amps....Gas was like 12 to start...turned up to 17-20....
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curt
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Re: Help with Welds

Post by curt » Sun Apr 06, 2014 6:16 pm

I get that too from time to time I wonder if its something in the base metal hope someone with more experience answers this
ever notice when you hit somethin or someone with a hammer you feel instantly better

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rudog
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Re: Help with Welds

Post by rudog » Sun Apr 06, 2014 10:17 pm

I've only had this happen to me twice. 1st was running out of gas...can you hear/feel the gas flow. The 2nd was using painted filler rod (long story)...cleaned off the paint and it fixed the problem.

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Maxthegardener
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Re: Help with Welds

Post by Maxthegardener » Sun Apr 06, 2014 11:16 pm

Spent ages last night on tips and tricks, trying to find an answer, could be any no. of things from an ill fitting electrode wrong cup size bad earth contaminated rod??, Ive also had the symtoms on my college course but it usually came down to trapping air? doesn't give you an answer sorry..maybe shake the bottle, purge the system?

Jeff L
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Posts: 568
Joined: Fri Oct 28, 2011 5:09 pm
SELF INTRODUCTION: Hey...I live in South Jersey (the Super Fund State) work as an Operating Engineer local825.Besides bikes I love to fish the surf.I have my current & seemingly endless project a BSA 750 Rocket3, a 72 Honda CB750,79 Kawasaki KZ1000, 48 Simplex, & a 62 Norton Atlas engine
Location: South Jersey

Re: Help with Welds

Post by Jeff L » Mon Apr 07, 2014 6:51 am

Think I got it narrowed down to a Gas flow Issue.Possibly at the Pedal.Connection might be bad or the Pedal itself...
Changing the shape of the Earth...1 bucket at a time...IUOE local 825 top of the food chain

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Customize IT
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Re: Help with Welds

Post by Customize IT » Mon Apr 07, 2014 8:25 am

You are using a red tungnston?

red for streel

green for aluminum

yellow for stainless
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Jeff L
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Posts: 568
Joined: Fri Oct 28, 2011 5:09 pm
SELF INTRODUCTION: Hey...I live in South Jersey (the Super Fund State) work as an Operating Engineer local825.Besides bikes I love to fish the surf.I have my current & seemingly endless project a BSA 750 Rocket3, a 72 Honda CB750,79 Kawasaki KZ1000, 48 Simplex, & a 62 Norton Atlas engine
Location: South Jersey

Re: Help with Welds

Post by Jeff L » Mon Apr 07, 2014 5:12 pm

I use the 2% for everything.
Changing the shape of the Earth...1 bucket at a time...IUOE local 825 top of the food chain

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curt
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Joined: Tue Oct 25, 2011 11:36 am
SELF INTRODUCTION: hi everyone its me from the old bord hopeing to see everyone come here and all the newcomers . lets make this as good as the old one or even better . lookin foreward to seeing everyones projects continue and ill be continueing mine too
Location: utica new york

Re: Help with Welds

Post by curt » Mon Apr 07, 2014 7:07 pm

I use red for stainless and steel never had a problem with stainless I actually weld more stainless than anything I was thinking my filler rods for regular steel sit for long periods of time I try to use a red scotchbrite pad on them before I use them seems to be less of an issue but I still get it from time to time
ever notice when you hit somethin or someone with a hammer you feel instantly better

kheaton
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SELF INTRODUCTION: My name is Ken Heaton. I've been in the medical field in the Army for the past 18 years and work on and build bikes as a hobby. My main hobby and goal is to think of parts that do not exist and make them or modify existing parts. I currently own a 99 Softtail that I bolted together, a 78 Triumph bobber that i built from the ground up, a 75 CB360 cafe, and a 76 Kawasaki KH500 that needs a lot of work. I joined the original forum about 8 years ago and I'm glad to see it up and running again!
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Re: Help with Welds

Post by kheaton » Mon Apr 07, 2014 9:27 pm

I've had the porous weld problem a few times. It's always been me forgetting to turn on the gas or light surface rust on the rods. It happened once with my mig and it was a bad connection at the machine.

Jeff L
Contributor
Posts: 568
Joined: Fri Oct 28, 2011 5:09 pm
SELF INTRODUCTION: Hey...I live in South Jersey (the Super Fund State) work as an Operating Engineer local825.Besides bikes I love to fish the surf.I have my current & seemingly endless project a BSA 750 Rocket3, a 72 Honda CB750,79 Kawasaki KZ1000, 48 Simplex, & a 62 Norton Atlas engine
Location: South Jersey

Re: Help with Welds

Post by Jeff L » Wed Apr 09, 2014 8:23 am

With someones help I was able to pin the Problem down to the Pedal.I put some pressure on the Cable wherecit goes into the pedal,& was able to get a clean Weld.Looks like a new Pedal in the near Future.
Changing the shape of the Earth...1 bucket at a time...IUOE local 825 top of the food chain

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