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Tig Welding Galvanized Steel

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发表于 2021-8-31 23:58:36 | 显示全部楼层 |阅读模式
I have a large project using two 10" Ibeams and I need to weld cross members between them using cold rolled steel 1/4" wall tube.  I have used my grinder and cleaned up the galvanization around the area where I will be running a bead but when I attempt to weld this, the area on the Ibeams splatters, pops out the weld and gums up my tig rod.Is the galvanization deep in the steel and I just haven't ground down deep enough or am I trying to do something that can't be done?
Reply:The galvanic coating is only on the surface, it doesn't penetrate deeply into the metal.What amperage, filler metal, tungsten size, tip angle and filler metal are you using?Is there a reason that you're not using GMAW?I r 2 a perfessional
Reply:Originally Posted by BlessedincolvilleI have a large project using two 10" Ibeams and I need to weld cross members between them using cold rolled steel 1/4" wall tube.  I have used my grinder and cleaned up the galvanization around the area where I will be running a bead but when I attempt to weld this, the area on the Ibeams splatters, pops out the weld and gums up my tig rod.Is the galvanization deep in the steel and I just haven't ground down deep enough or am I trying to do something that can't be done?
Reply:I think milk is the remedy for galvanize poisoning. I forget what the symtoms are I think sweats or hot flashes or something menopuase like!  LOL
Reply:zinc poisoning is somewhat like a reall bad flu, have a glass of milk and you will be out of bed in a jiffy.or better yet, dont get sick at all.  Wear a respiarator (not a dust mask) and grind the stuff off as best as possible before you weld it.
Reply:You haven't ground down enough to get thru the galvanizing yet.  I would suggest stick welding as mentioned above.  I've tried tigging hot dipped galvanized fittings in the past, and never had much luck.  I never could get them clean enough not to cause a problem.I'm a Lover, Fighter, Wild horse Rider, and a pretty good welding man......
Reply:If you do want to grind, use a non-ferrous grinding wheel (such as for aluminum), it won't load up and clog so bad .....
Reply:Originally Posted by HideandseekI think milk is the remedy for galvanize poisoning. I forget what the symtoms are I think sweats or hot flashes or something menopuase like!  LOL
Reply:Is the galvanization deep in the steel and I just haven't ground down deep enough or am I trying to do something that can't be done?
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