Hi Mr. Prasad,
FCAW could be an ideal welding process for the thickness you have mentioned. However one has to be very careful about the individual performances of specific brands. Within the same AWS specifications, filler metals from two manufacturers may not produce equal performance. You may have to screen the filler properly, upon discussion with manufacturers, qualify procedure, train and qualify the welders. In addition incorporating additional NDE over and above the design code would be a good idea.
Pradip Goswami,P.Eng.
Welding & Metallurgical Engineer/Specialist
Ontario Power Generation Inc.
Email-pgoswami@sympatico.ca,
From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Muhammed Ibrahim PK
Sent: Sunday, June 20, 2010 9:41 AM
To: materials-welding@googlegroups.com
Subject: Re: [MW:5669] FCAW Process for welding of tanks
Hi,
Be care ful when doing FCAW. Porosity and Lack of fusion is the major issue if the welder is not properly trained. It is recommended for stuctural. If you check the hardness also the weldmetal will show more than 200 BHN.
Thanks & Regards
Muhammed Ibrahim PK
On 20 June 2010 14:57, N VENKATESWARA PRASAD <weldengr.velosi@gmail.com> wrote:
Dear All,--
We are planning to introduce Flux cored Arc welding for L seams and C seam welding of Tanks. The Tank dia is 12m and material is ASTM A 515 Gr. 60. We are planning to use E 71T1 flux cored wires. FCAW was never used for welding my cleint jobs. So he is asking history on usage FCAW wires for Tanks, repair percentage, bead apperance and any other adavantages. If you have FCAW wire please send me the above details and also photos of some weld joints also.
Regards
N.V. PRASAD
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