Hi Nimesh
Are u using any filler wire ?
If yes then,trust you are using ER70S2 which is a good deoxidised wire.
Also i would suggest you grind the area to be welded i.e WEP prior to welding. We have welded GI pipes with same procedure by TIG successfully.
Regards
Prem S Nautiyal
Godrej,Mumbai.
On Mon, 11 May 2009 10:49:13 +0530 wrote
>Dear All,
>
>We are trying to weld Galvanised Sheets 0.5mm with GTAW. We find it
>difficult to weld and get some blow holes. Results with CRC instead of
>galvanised are much better.
>
>Is this because of the Zinc content ? Any suggestions ?
>
>Regards,
>
>--
>Nimesh S Chinoy
>
>>
>
PREM S NAUTIYAL
CELL : 9820313278
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