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Posted by on March 22, 2008, 10:30 pm
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Hello,
New to tig welding, and been trying to do some mild steel welding.
However, the tungsten keeps melting into a ball before it gets hot
enough to weld. I have Dynasty 200DX running on 230VAC 50amp circuit
with the CoolMate 3 and DiamondBack Torch. Welding 1/16" mild steel
with DCEN. The Argon flow rate is around 15 at 20psi. The AMP meter on
the Dynasty only reads 20-30amp before the Tungsten melts. The
CoolMate is hooked up correctly, and the torch does not get hot.
Any recommendations on how to fix this problem? I read the TIG
Handbook, and believe am welding correctly.
Thanks,
Luds
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Posted by Ned Simmons on March 22, 2008, 10:46 pm
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On Sat, 22 Mar 2008 19:30:57 -0700 (PDT), daluds@charter.net wrote:
>Hello,
>
>New to tig welding, and been trying to do some mild steel welding.
>However, the tungsten keeps melting into a ball before it gets hot
>enough to weld. I have Dynasty 200DX running on 230VAC 50amp circuit
>with the CoolMate 3 and DiamondBack Torch. Welding 1/16" mild steel
>with DCEN. The Argon flow rate is around 15 at 20psi. The AMP meter on
>the Dynasty only reads 20-30amp before the Tungsten melts. The
>CoolMate is hooked up correctly, and the torch does not get hot.
>
>Any recommendations on how to fix this problem? I read the TIG
>Handbook, and believe am welding correctly.
Try setting the machine for DCEP. If that works, you've got the torch
and ground connections switched. A less likely scenario is the
welder's internal wiring is reversed, or it's outputting AC instead of
DC.
--
Ned Simmons
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Posted by on March 22, 2008, 10:55 pm
Please log in for more thread options > On Sat, 22 Mar 2008 19:30:57 -0700 (PDT), dal...@charter.net wrote:
> >Hello,
>
> >New to tig welding, and been trying to do some mild steel welding.
> >However, the tungsten keeps melting into a ball before it gets hot
> >enough to weld. I have Dynasty 200DX running on 230VAC 50amp circuit
> >with the CoolMate 3 and DiamondBack Torch. Welding 1/16" mild steel
> >with DCEN. The Argon flow rate is around 15 at 20psi. The AMP meter on
> >the Dynasty only reads 20-30amp before the Tungsten melts. The
> >CoolMate is hooked up correctly, and the torch does not get hot.
>
> >Any recommendations on how to fix this problem? I read the TIG
> >Handbook, and believe am welding correctly.
>
> Try setting the machine for DCEP. If that works, you've got the torch
> and ground connections switched. A less likely scenario is the
> welder's internal wiring is reversed, or it's outputting AC instead of
> DC.
>
> --
> Ned Simmons
I'll try the DCEP tomorrow. I checked the ground and torch connections
and they match the manual. How would I check the welder's internal
wiring?
Thanks,
Dave
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Posted by RichD on March 22, 2008, 10:59 pm
Please log in for more thread options Dave,
I was going to say put a DC meter on it, but the high voltage high
frequency
won't do it or you any good unless you can turn it off.
The symtoms are definetly DCEP especially at such a low amperage.
RichD
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Posted by RichD on March 22, 2008, 10:56 pm
Please log in for more thread options That should work fine. Sounds like the machine is wired backwards or
your
lead connections are reversed.
What tungsten?
RichD
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>
>New to tig welding, and been trying to do some mild steel welding.
>However, the tungsten keeps melting into a ball before it gets hot
>enough to weld. I have Dynasty 200DX running on 230VAC 50amp circuit
>with the CoolMate 3 and DiamondBack Torch. Welding 1/16" mild steel
>with DCEN. The Argon flow rate is around 15 at 20psi. The AMP meter on
>the Dynasty only reads 20-30amp before the Tungsten melts. The
>CoolMate is hooked up correctly, and the torch does not get hot.
>
>Any recommendations on how to fix this problem? I read the TIG
>Handbook, and believe am welding correctly.