Welding sheet steel: splattering?

Ethanol

Coast to Coast
So I got a great hook up on sheet steel. Nice! But when trying to weld it it splatters like crazy. Just little balls of weld all over. Think it's been coated with something? What should I clean it with or do to it to get it to weld better?
 
Not sure. How can I tell. Also if it's not apparent I'm a total novice at welding. Taking a month long class in July though. 5-9 MWF will be fun right after work! Well, actually it will.
 
Actually now that I think about it it probably is galvanized. It left a white powdery coating around the welds. Anything I can do to make it easier/safer to weld? (Already welding outside with a fan.)
 
MIG, TIG, Arc?

with arc when i get splatter i sometimes turn the current down and weld a bit slower. if that doesnt help its the type of rod.

If its galvanized, DONT WELD IT. thats just BAD. breathe that stuff in enough and itll kill ya more then chainsmoking 2 packs a day.
 
Ethanol said:
That's what I thought too but this: http://www.sperkoengineering.com/html/articles/WeldingGalvanized.pdf says it's not so bad. Dunno.

Very interesting.
Unlike other heavy metals, such as copper, lead and mercury, zinc is an essential micro nutrient. Zinc is essential to the
proper growth of plants and animals. Zinc forms part of the enzyme system that regulates biological processes throughout the
body. As shown on any multi-vitamin/mineral bottle, the recommended minimum adult intake is 15 mg/day. :D
I liked this line
It should be noted that any compressed air supply has to be "oil-free" air; normal shop air contains oil which, if inhaled, will
coat the lungs in a short period of time, causing irreversable death. ;D
 
I liked that too. Still seems like an interesting article. Free metal! Need to learn to weld it!
 
Galvanisation is a surface coating - use an angle grinder to simply take it off. Be gentle though, you don't need to cut through the sheet, now...

- boingk
 
boingk said:
Galvanisation is a surface coating - use an angle grinder to simply take it off. Be gentle though, you don't need to cut through the sheet, now...

- boingk
+1 then just use cold gal paint over the welds and your all good.
 
I use an angle grinder with a wire cup wheel to "prep" metal before welding:

wire-brushes.jpg


It will rip through galv coatings quite easily but won't grind through the metal. It's also good for cleaning up spattery flux core welds ;)

It's my new favourite tool in the shed at the moment ;D
 
Rocan said:
MIG, TIG, Arc?

with arc when i get splatter i sometimes turn the current down and weld a bit slower. if that doesnt help its the type of rod.

If its galvanized, DONT WELD IT. thats just BAD. breathe that stuff in enough and itll kill ya more then chainsmoking 2 packs a day.

Agreed.
 
That stuff is designed to stop splatter sticking to the surrounding metal areas, not stop your welder from making splatter.

Just sayin....
 
As I understand it from the welding engineer I work with (I have never welded once in my life) you get the splatters because the settings on the machine are wrong. I would guess that the steel is fine but maybe if you spent some time watching online tutorials or something? Sorry I couldn't help more.
 
dgreen said:
As I understand it from the welding engineer I work with (I have never welded once in my life) you get the splatters because the settings on the machine are wrong. I would guess that the steel is fine but maybe if you spent some time watching online tutorials or something? Sorry I couldn't help more.

The settings can be perfect, but you will still get spatter if your welding technique isn't right. Stick-out, angle, and travel speed are all very important. Even if you do get those things right, galv and gasless flux core wire will still spatter somewhat; that's just the nature of those two beasts.

A small paint scraper or puddy knife works well for removing spatter, particularly if you use anti-spatter spray. Chisel and hammer works on the heavy stuff that doesn't just pop off with the scraper.
 
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