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> need welding advise - welding upside down
Jeroen
post May 22 2006, 05:28 PM
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I'm having some troubles when welding upside down (or atleast at an upward angle)

Basically the molten wire turns into a little ball that gets closer back to the tip of the torch and it's difficult to get the melting done at the metal that needs to be welded

Any tips on how to prevent that?

Oh... this is on a MIG-welder with gas
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Jeroen
post May 22 2006, 05:42 PM
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huh? how does that work?
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LvSteveH
post May 22 2006, 05:45 PM
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QUOTE(Jeroen @ May 22 2006, 04:42 PM) *

huh? how does that work?


The arc travels from negative to positive, so if you have it set for electrode positive, you will put more heat into the electrode, and less into the work. While electrode negative, more heat goes into the work.

When upside down, if you are set for electrode positive, your wire will tend to melt faster and create the problem you are describing. The down side is that if more heat is going into the work, you have to be extra careful to control the more molten puddle. Dial the power down a little if it becomes an issue.

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Posts in this topic
Jeroen   need welding advise - welding upside down   May 22 2006, 05:28 PM
TimT   reverse the polarity of the leads.   May 22 2006, 05:29 PM
Jeroen   huh? how does that work?   May 22 2006, 05:42 PM
LvSteveH  
 

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