[MW:2494] Re: Zero gap butt welding

Basically in zerro gap butt welding you need to use higher currents (i.e 550-650 Amps) for a root face of 8-10mm. You need to weld from both sides, its mandatory. Also check is their any impact requirement, if so, you need to check heat input.

 

Regards

Loni

 

On 6/20/09, Gurmeet singh mehta <gurmeetpmehta@gmail.com> wrote:

Hi,

It is possible with welding zero gap for circular seams also.

The Root face shall be anywere between 12- 17 mm.

But please note if Full penetration joint is required you may need to caryy out back gouge also.

regards

Gurmeet singh

 

On Thu, May 7, 2009 at 3:17 PM, Muhammed Ibrahim <ibratech@gmail.com> wrote:

Hi Gents,

 

Anybody having experience with zero gap butt welding (V- groove with more root face) with direct SAW in pressure vessels. Is it possible in circular seam?. If possible how much root face should be maintained?.

Thanks & Regards
Muhammed Ibrahim PK
 

 

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