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08-27-2014, 10:35 AM
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#1 |
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Registered User
Join Date: Jan 2007
Location: vernon b.c.
Posts: 3,022
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welding ? is it rust or residue
I,m just welding up some 1 in. sq. tubing with a 110 wire feed and noticed it gets rusty color around the welds,is this residue or is it the start of rust.Just wondering cause the welds don,t have to be ground down as you won,t see them but I still want to paint it,I can get a wire brush in there to clean it up some what.
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08-27-2014, 02:43 PM
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#2 |
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meowMEOWmeowMEOW
Join Date: Sep 2009
Location: MKE WI
Posts: 7,128
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Re: welding ? is it rust or residue
Depends on the material you are welding and what kind of wire you are welding with. It could either be scale from the flux core wire, or the beginning of flash rusting. You can clean it up with a wire brush, actual rust will be harder to get off, scale will flake away.
Weld-thru primer is good for this sort of thing, as you aren't left with a surface that has been exposed.
__________________
'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING  |
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08-27-2014, 04:11 PM
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#3 |
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Registered User
Join Date: Jul 2009
Location: San Jose Ca
Posts: 2,871
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Re: welding ? is it rust or residue
Are you taking about the silica? How long after the weld does it show up?
__________________
David Used parts build: http://67-72chevytrucks.com/vboard/s...d.php?t=638991 My brother's Nova: http://www.67-72chevytrucks.com/vboa...d.php?t=727985 Rear suspension rework: http://www.67-72chevytrucks.com/vboa...d.php?t=750557 Instagram: myfabguy |
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08-27-2014, 07:07 PM
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#4 |
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Registered User
Join Date: Jun 2013
Location: Somewhere
Posts: 3,066
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Re: welding ? is it rust or residue
Sounds like he's using flux core wire.
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08-27-2014, 08:01 PM
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#5 |
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Registered User
Join Date: Jul 2009
Location: San Jose Ca
Posts: 2,871
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Re: welding ? is it rust or residue
Even solid wire has brown **** on it.
__________________
David Used parts build: http://67-72chevytrucks.com/vboard/s...d.php?t=638991 My brother's Nova: http://www.67-72chevytrucks.com/vboa...d.php?t=727985 Rear suspension rework: http://www.67-72chevytrucks.com/vboa...d.php?t=750557 Instagram: myfabguy |
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08-28-2014, 01:02 AM
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#6 |
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meowMEOWmeowMEOW
Join Date: Sep 2009
Location: MKE WI
Posts: 7,128
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Re: welding ? is it rust or residue
out of shielding gas, or real thick metal? splatter city
__________________
'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING |
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08-28-2014, 01:04 AM
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#7 |
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Registered User
Join Date: Jul 2009
Location: San Jose Ca
Posts: 2,871
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Re: welding ? is it rust or residue
Neither. Wire speed way low. Was messing around trying that mig like tig thing
__________________
David Used parts build: http://67-72chevytrucks.com/vboard/s...d.php?t=638991 My brother's Nova: http://www.67-72chevytrucks.com/vboa...d.php?t=727985 Rear suspension rework: http://www.67-72chevytrucks.com/vboa...d.php?t=750557 Instagram: myfabguy |
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08-28-2014, 01:10 AM
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#8 |
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Registered User
Join Date: Feb 2008
Location: Tacoma Washington
Posts: 890
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Re: welding ? is it rust or residue
Silica and splatter.
__________________
I know a guy who's addicted to brake fluid. He says he can stop any time. 72 K10 396 75 Cj5 MPI 350 Chev 67 Chevelle 396, 4 speed 74 FXE 08 Tahoe Last edited by imjeff; 08-28-2014 at 12:07 PM. Reason: Mis-spell |
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08-28-2014, 09:06 AM
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#9 | |
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Registered User
Join Date: Jan 2007
Location: vernon b.c.
Posts: 3,022
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Re: welding ? is it rust or residue
Quote:
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