tig weld question

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hello can someone tell me what the brown is around my weld joints is this contamination of something when i start off im ok after making the root pass but when i weld the next 2 beeds above and below the root i get brown streaksis it maybe because i am holding the torch and a to pitch of an angel insted of straight on?thanks  JasonLast edited by RoosterBoy; 12-28-2006 at 11:31 PM.
Reply:Sounds like contamination to me. but....A little more info about what your welding, what gas and tungsten type and size your using, along with what filler material you are using might help.Any pics?- Paulhttp://all-a-cart.comWelding Cart Kits and accessories
Reply:isnt that what co2 does?Various GrindersVictor Journeyman torch200cf Acet. 250cf oxygenLincoln 175 plus/alpha2 gunLincoln v205t tigLincoln 350mpEsab 650 plasmaWhen you can get up in the morning, Its a good day.Live each day like its your last.
Reply:im with ZT on this you did not give enough infoChuckASME Pressure Vessel welder
Reply:Also include your amperage with the info_________________Chris
Reply:sorry i took so long for pictures iv been real busy today buying shelves and bins so i can orginizeing all my stuff below is the pictures of my welds keep in mind i am new at welding i only have about 3 hrs into this and never welded at all before. i also bought a new grinder today so i can grind my tungsten. i read that you should grind it. i also posted a picture of my new toolbox that i badly needed :-) thank god :-)anyway let me know what you think i think because i did not fully clean the area well before i welded is why i have the brown spots. i read on millers website that you have to clean all your joints well before welding. any other tips you guys have would be greati am going to keep practising this weekendthanksJason Attached Images
Reply:the first pic...the weld in front? looks good to me.. the ones in the rear?just some contamination..clean is not good enough when it comes to tig..acetone is your friend..just dont leave it anywhere near the welder..or table..unless you want to remodel the shop.. i'm gonna have another tig class in mass soon...you cant be that far away..i'll post the date later.....zap!I am not completely insane..Some parts are missing Professional Driver on a closed course....Do not attempt.Just because I'm a  dumbass don't mean that you can be too.So DON'T try any of this **** l do at home.
Reply:thanks zapster and id be happy to give you a donation and support your generous efforts in helping people learn.  thank youps can i buy acetone at abco ?JasonLast edited by RoosterBoy; 12-29-2006 at 08:56 PM.
Reply:Originally Posted by RoosterBoythanks zapster and id be happy to give you a donation and support your generous efforts in helping people learn.  thank youps can i buy acetone at abcoJason
Reply:hay zapster i just wanted to know more about the acetone your talking about how do you use it in your shop? also i am very interested in going to your class how long is your class?thank you  Jason
Reply:Acetone is nasty stuff...Do not leave it near the bench or machine... I get it by the 1/2 gallon..any hardware store has it..but i put what i want to use in a coffee can with a plastic lid and take it from there...the rest goes in the bottom of my toolbox where nobody can get to it.. clean your parts with a clean rag and let air dry...about 30 sec..then do your thing...the class is about 4-5 hrs..but worth it.....zap!I am not completely insane..Some parts are missing Professional Driver on a closed course....Do not attempt.Just because I'm a  dumbass don't mean that you can be too.So DON'T try any of this **** l do at home.
Reply:thanks zapster id love to attend :-) will i get a hands on try :-) ?also do you use the acetone on all your metals before tiging it?i got some cleaner for aluminum but don't weld aluminum yet :-)thanksJason
Reply:Zapster`s right about the acetone I`ve been welding stainless for 16yrs. this is one trick used to clean but I belive in cleaning good before welding for puddle control and uniformity. Also new to the site man I love the info. located here.Chris"FILL`N THE CRACK OF DAWN TO A BROKEN HEART"