[TheForge] Welding advice needed pronto

[Gladish Family]

Thanks, Ralph.
Sounds like a great tool, but I guess I'll stick with the grinder or 
just never, ever,  make a mistake.
In my dreams.
Andy g.

Ralph Sproul wrote:

>Andy,  The air arc process could be compared to a weld eraser.
>
>It is a carbon graphite rod which is used as a non-transferable heating rod
>element that uses compressed air from under the rod holder in the torch head
>to remove the molten metal the arc from that rod is creating.  It is a
>noisey, nasty process that requires proper safety gear be worn so you don't
>get badly burned.
>
>It is also very effective in removing welds with less heat transfer to the
>base metal than a cutting torch.  The spatter and debris shoot 5-30 feet
>away - so being aware of fire hazards is a good thing to be on top of as
>well when doing this process.
>
>It takes DC reverse polarity (electrode positive) with at least 200 amps for
>a smaller sized electrode, but the most common size is 1/4, 5/16 for use
>with the 400 amp torches.  Common current settings are 350-500 amps for
>carbon arc gouging.  So, you need a good sized welder with a good duty cycle
>to do this process.
>
>There are also flat rods compared to the common round rods.  I've used them
>to "sculpt" a block of metal like a carving chisel before.
>
>Ralph
>
>----- Original Message -----
>From: "Gladish Family" <gladish at cnw.com>
>To: "Sponsored by ABANA" <theforge at mailman.qth.net>
>Sent: Friday, February 25, 2005 10:51 AM
>Subject: Re: [TheForge] Welding advice needed pronto
>
>
>  
>
>>Ralph- can you tell me what air arc is?
>>Sounds like a useful technique.
>>Thanx,
>>Andy G.
>>
>>    
>>
>>> BUT, Long story
>>>short is I had to air arc out all the welds and do them over........
>>>
>>>
>>>
>>>      
>>>
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