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Old March 25th, 2009, 02:14 PM   #1
1badzuk
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welding guru needed!

i need any person who knows thier stuff about welding (esp. mig welding over contaminated flux welds !)
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Old March 25th, 2009, 02:40 PM   #2
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why wouldn't you cut/grind out the contaminated sections?
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Old March 25th, 2009, 02:41 PM   #3
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its a weld in beadlock ring in the rim already i ground out as much as possible and all it wants to do is pop and blow out every time i find a pocket of crap in the weld or a void from chickenshit welds
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Old March 25th, 2009, 02:50 PM   #4
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Grinding out or cutting out the bad sections is the only right way to fix it. inb4jpfabcomments
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Old March 25th, 2009, 02:57 PM   #5
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or clean it up as much as possible and use a tig to try and burn ot pooricity(sp?) using stainless rod. thats what we used to do at work hope this helps
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Old March 25th, 2009, 02:59 PM   #6
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thanks unclebeaner i figured the answer would be with tig welding bood thing my buddy with a tig owes me a favor!

any other idea would be helpful as in another way to skin this "cat"
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Old March 25th, 2009, 03:01 PM   #7
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the only other way is to get it completely clean and weld it hot. are you trying to weld over the flux core with flux core?
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Old March 25th, 2009, 03:04 PM   #8
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no i was using my mm 200 with 75/25, as hot as i can with low feed and it would look good till i hit a "pocket" of paint dirt fluxcore slag or whatever then it violently sizzles and blows my weld to shit. so i test drove different heat and speed settings with no luck so now i have a rim i neeed to re grind again

edit i also tryed uping the incoming gas to purge the area better nu luck ....
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Old March 25th, 2009, 03:07 PM   #9
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well you have to try and remove all bad materal and make sure the area is extremely clean and try again if not hit your buddy up with the tig.
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Old March 25th, 2009, 03:13 PM   #10
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at this point i think i will call in my favor and get them tiged this weekend unless some other really good idea comes up
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Old March 25th, 2009, 03:26 PM   #11
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Burn out the contaminates with a torch then try.
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Old March 25th, 2009, 03:28 PM   #12
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there we go torch it i didnt think of that will that remove junk left by the flux core to or just burn paint and grease
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Old March 25th, 2009, 03:40 PM   #13
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Originally Posted by 1badzuk View Post
there we go torch it i didnt think of that will that remove junk left by the flux core to or just burn paint and grease
When I do it I get the area I'm working on super red hot but I try not to melt it. Allow to cool and recheck for nasties.
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Old March 25th, 2009, 03:43 PM   #14
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what kind of flame do you suggest orange sooty or friggin blue
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Old March 25th, 2009, 03:50 PM   #15
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tigging that isnt going to do anything except make a mess... I wouldnt suggest trying to burn it out unless it's a small area otherwise it'll take about an hour a rim.... grind it out, heat it to a molten red to clean, let it cool and then try welding it again with normal settings. also, wire wheeling the surface does more than you would think... give that a shot after it's ground out...
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Old March 25th, 2009, 03:52 PM   #16
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wow very good ideas i have something to strive for now
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Old March 25th, 2009, 03:55 PM   #17
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your best bet is to tig weld it with stainless filler rod...a torch will not melt out the old flux
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Old March 25th, 2009, 04:50 PM   #18
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your best bet is to tig weld it with stainless filler rod...a torch will not melt out the old flux
i just speak from experiance on this one im not saying anyone else's ideas are bad but seemed to work for me everytime
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Old March 25th, 2009, 04:52 PM   #19
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best guess on time required per rim? tiging that is all prep would be done.

also what does the ss rod do for the tig process when burning into flux weld?
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Old March 25th, 2009, 10:00 PM   #20
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you need to try a grind out as much old weld and porosity/flux as possible...once you get that far the stainless filler rod should beable to fuse the rest of the poros metal back together...stainless filler is the easiest rod I have found to run with a tig...basically, if the operator gets porosity with a tig and stainless rod one of 2 things are wrong...too much heat or out of argon.
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