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  #11  
Old 07-31-2007, 04:20 PM
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So I have been burning wire for about the past hour, and it is spatter city! My welds have benifited from everyones advice, I appreciate it, but I have spatter, and I am hearing good amount of popping.

I might be kinda low on C02, is there any else to check? Nothing different from yesterday to today, same metal, wire, gas, and machine.

Any guess?

Thanks!
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  #12  
Old 07-31-2007, 04:43 PM
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Quote:
Originally Posted by Rezarf View Post
So I have been burning wire for about the past hour, and it is spatter city! My welds have benifited from everyones advice, I appreciate it, but I have spatter, and I am hearing good amount of popping.

I might be kinda low on C02, is there any else to check? Nothing different from yesterday to today, same metal, wire, gas, and machine.

Any guess?

Thanks!
MIG welding spatters....kind of a slow constant "raspberry" noise.
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  #13  
Old 07-31-2007, 05:01 PM
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dependendant upon cleanliness of metal, thickness, amperage, co2 cfm should vary... on tap D, wirespeed 4.5, cfm should be around 15 on a lincoln 175sp, now that being said, the general rule is the hotter the heat, the more gas.

There are sooooo many variables here man... but, mig still splatters. only Tig and torch don't.

as a rule, splatter means your too hot. If it spattering too much, take the machine down a notch, but put the wire speed a little higher than what the guide says on the machine. If you can feel the wire "sticking" or "pushing" into the base material, your wire speed is too high.

Splatter can also mean your stick out is too far. anything below 175 amps on mig and you should be around 3/8ths stickout. This combined with proper angle of the gun can make it difficult to see your puddle, so you have to be careful. A common mistake is to change the angle of the gun and stick out to see the bead you just left..

Also, splatter can be caused by too much mill scale left on the material.

you may also not have been wearing your special welding sandals

Last edited by Beater; 07-31-2007 at 08:19 PM.
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  #14  
Old 07-31-2007, 06:58 PM
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Originally Posted by Uncle Ben View Post
MIG welding spatters....kind of a slow constant "raspberry" noise.
UB-

What do you mean by Rasberry?

Thanks!

Yesterday was clean clean clean, today is spatter spatter spatter.

Can't figure it out.
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  #15  
Old 07-31-2007, 11:57 PM
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Well I played so much today I "sun burned" my forearms.

AxleIke came by and said my amount of spatter was normal, and John, I set my stuff up like you said and it made a difference for sure.

My welds look better, started to make C's and circles instead of pulling in a straight line. My welds seem less on the surface and more into the metal now too.

I am nearly through my first small roll.

I am going to try some differnt style joints tomorrow and see where I end up!

John, what are your setting for 1/8" steel tubing?

Thanks!

Drew
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  #16  
Old 08-01-2007, 01:52 AM
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technique looks pretty good just turn up the heat and slow the wire down, I've always been taught that you want the two pieces to melt in to each other more then just fill the gap with wire.
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  #17  
Old 08-01-2007, 06:55 AM
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use the machine's guide. Then adjust. Just remember that settings are not static for thickness, the type of joint matters too, along with prep. The more you prep the joint, bevel, depth of gouge, etc, will effect the voltage/speed settings...

"C's" don't necessarily make a stronger weld, but the always make it prettier. Don't confuse pretty with strong.

FYI - lincoln's welding handbook, available online and at some stores is STILL considered the industry bible (even by miller-heads) The army welding manual is a good, if not lengthy read as well. You should be able to download the army one after a google search.
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  #18  
Old 08-01-2007, 07:20 AM
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i use flux so i have no idea about the gas (well )

as far as tech, i use the push and pull method, it just depends.
but mostly i've change to the push method and think about making a check mark.

push the wire to where you're welding (this pre-heats the area thats being welded) draw it back and slightly,slightly lift up on the tip of the gun.
repeat!

you want your welds for the most part to be 1/4" wide, so when you "push" the wire ahead of the weld, you don't need to go any further ahead than 1/4"

you really need to wear long sleeves or you can buy welding sleeves from fastenal for like 6-7$$ for a pair. this is what i wear.

bring your helmet down and we can play someday
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  #19  
Old 08-01-2007, 07:20 AM
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Quote:
Originally Posted by Uncle Ben View Post
MIG welding spatters....kind of a slow constant "raspberry" noise.
Quote:
Originally Posted by Rezarf View Post
UB-

What do you mean by Rasberry?



Can't figure it out.
You know, when you make a fart noise with your mouth. It is a term I most frequently hear b-cause of my daughter. The sound that is made when they stick out their tongue between their lips and blow. That is the sound UB was making reference to.
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  #20  
Old 08-01-2007, 08:25 AM
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think sizzling bacon with no pops...
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