Cleaning before weld
Thread Starter
Joined: Feb 2006
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From: boca, FL, USA
Cleaning before weld
After I cut a tube wiht a chop saw then weld it, the welds allways come out black. I figued it was a heat issue. But when I weld 2 pieces that havnt been cut together I get great clean welds with alot of color. I figure its a cleaning issue, what do you guys do to prep the metal before weldling?
Junior Member
Joined: Jul 2004
Posts: 520
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From: Sacramento, CA, USA
Re: Cleaning before weld (Tigfab)
Wipe it down well with lacquer thinner, or if your TIG welding, use acetone. Also, make sure you take the mill scale off, if your welding plate steel.
Kyle
Kyle
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Joined: May 2002
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Re: Cleaning before weld (tony1)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by tony1 »</TD></TR><TR><TD CLASS="quote">Don't get the acetone on your welding gloves while you're cleaning, it'll burn! lol don't ask me how i know that! 
</TD></TR></TABLE>
i bet you have the burn marks to prove it
</TD></TR></TABLE>i bet you have the burn marks to prove it
Honda-Tech Member
Joined: Feb 2005
Posts: 272
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From: Milford, CT, USA
Re: Cleaning before weld (tony1)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by tony1 »</TD></TR><TR><TD CLASS="quote">Don't get the acetone on your welding gloves while you're cleaning, it'll burn! lol don't ask me how i know that! </TD></TR></TABLE>
Dont get the acetone on your welding helmet lens either, itll start dissolving the plastic
I put my helment down on a rag w/ acetone and when I picked it up the rag was sticking to the lens cover.
</TD></TR></TABLE>Dont get the acetone on your welding helmet lens either, itll start dissolving the plastic
I put my helment down on a rag w/ acetone and when I picked it up the rag was sticking to the lens cover. Trending Topics
Honda-Tech Member
Joined: Oct 2000
Posts: 4,534
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From: Zoo York
Re: Cleaning before weld (tony1)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by tony1 »</TD></TR><TR><TD CLASS="quote">Don't get the acetone on your welding gloves while you're cleaning, it'll burn! lol don't ask me how i know that! </TD></TR></TABLE>
what a b*tch... y dont u go and cry about it some more...
personally i use the 3M roloc surface conditioning pads to clean off most metals before welding it... had good luck with it and the surfaces always come out perfect...
</TD></TR></TABLE>what a b*tch... y dont u go and cry about it some more...
personally i use the 3M roloc surface conditioning pads to clean off most metals before welding it... had good luck with it and the surfaces always come out perfect...
Member
Joined: Nov 2003
Posts: 1,247
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From: Lemont, IL, USA
Re: Cleaning before weld (bigTom)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by bigTom »</TD></TR><TR><TD CLASS="quote">
what a b*tch... y dont u go and cry about it some more...
personally i use the 3M roloc surface conditioning pads to clean off most metals before welding it... had good luck with it and the surfaces always come out perfect... </TD></TR></TABLE>
Rolocs are expensive though for how little use I get out of them. Usually they're like $.50-.75 a piece. I found a company called Klingspor that sells boxes of 100 knockoff 3M ones for $35. Usually I spend $40 or higher on a box of 25 of the 3M ones.
what a b*tch... y dont u go and cry about it some more...
personally i use the 3M roloc surface conditioning pads to clean off most metals before welding it... had good luck with it and the surfaces always come out perfect... </TD></TR></TABLE>
Rolocs are expensive though for how little use I get out of them. Usually they're like $.50-.75 a piece. I found a company called Klingspor that sells boxes of 100 knockoff 3M ones for $35. Usually I spend $40 or higher on a box of 25 of the 3M ones.
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