Just to add, the sources of Hydrogen are Moisture, carbanaceous materials like Grease etc.. & Paint. The source of H2 in the shielding gas is moisture condensation which will not be a problem with welding grade purity Argon.
Thanks & Regards
J.Gerald Jayakumar
0091-9344954677
On Monday, November 20, 2017, 2:27:48 PM GMT+4, 'james gerald' via Materials & Welding <materials-welding@googlegroups.com> wrote:
Normally for CO2 shielding gas for FCAW welding, a Heater can be fitted to the Gas cyclinder along with the Regulator and Flow meter.
Argon used in purging gas shouldn't be a problem as the gas will be heated up due to welding Heat.
I haven't comes across Hydrogen problems in GTAW welding.
Thanks & Regards
J.Gerald Jayakumar
0091-9344954677
On Monday, November 20, 2017, 11:29:48 AM GMT+4, Mohamed Ali <marb8389@gmail.com> wrote:
Dear Experts,
-- Could you please tell, how can ensure no hydrogen is is the backing or Shielding gas??
if use Argon gas 99.997% during welding.
Regards,
Mohamed
https://materials-welding.blogspot.com/
https://www.linkedin.com/groups/122787
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