PB,
1) It is oserved that if one use carbon arc gouging the carbonpick up is observed upto the depth of mm so it is better to griding upto 3 mm thk from the gouged surface.
2) Chip back grinding using farros blattor is another option for good productivity but ihs the limitations to be used in L/seam & circ seam joints not in nozzle implant chip back.
3) yes, chip back using plasma arc is another option for SS chip back in all type of joints but its torch availability is an issue. You can try hypertherm for plasme arc gouging torch.
regards,
Amarjit singh
TEMA INDIA LTD
On Wed, Mar 31, 2010 at 11:16 AM, PB HEGDE <hegde.pb@isgec.com> wrote:
Dear Friends
What is the best method of back gouging of SS weld of heavy thickness plate?
Do you prefer
i) Back Gouging by Carbon Arc rod
ii) By Plsama gouging with hand torch
Ia)If By Carbon Arc rod – How much gouged surface you prefer to grind ? to remove carbon contamination
Iia) Is there any special plasma torch available for back gouging
Regards
Hegde P.b.
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Amarjit Singh
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