Re: [MW:12020] GTAW Vs SMAW

Look at the size of the arc...
narrower the arc, less voltage is needed...

Moreover, the plasma is different, for SMAW its more CO2 but for GTAW, its Argon...
Different plasma makes different arcs with different electrical characteristics...

the electrode is different too...
The voltage required to "fire" electrons from Tungsten is different than that of stick electrode in SMAW

Many parameters are involved...

Ramin  Kondori

   QC/Welding Engineer 

         IWE AT 0070

   

On Sun, Jul 31, 2011 at 8:47 AM, kannayeram gnanapandithan <kgpandithan@gmail.com> wrote:

Due to more resistance of SMAW Electrode size and length for current to flow, higher voltage is required

Pandithan

Cethar Ltd

Trichy

On Fri, Jul 29, 2011 at 5:06 PM, Prasu Cutie <pracuty@gmail.com> wrote:

Dear Experts,

for the same current voltages are different for GTAW & SMAW why???  Plz explain

GTAW     90-180A   9-14V


SMAW    90-180A   22-26V


Regards
Prasad

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