[MW:1984] Re: 1898] Multi layer weld capping in SAW

Instead of single layer capping we should go for multilayer because it
tempers the layer below the capping layer , even the heat of capping
layer improves the Structure of lower layer HAZ ( martensite to
Tempered Martensite) , which improves the impact strenght at top ,
because Impact strength is always found in lower values at the top.

Jaspal Singh

9996624244

On Apr 9, 8:45 am, "PB HEGDE" <hegde...@isgec.com> wrote:
> Hi
>
> Multilayer capping  is nothing but temperbead practice , which is sort heat
> treatment to bead below the capping layer , This improves the toughness even
> up to top , This bead is generally ground  if the thk of weld bead increases
>
> Hegde
>
> From: materials-welding@googlegroups.com
> [mailto:materials-welding@googlegroups.com] On Behalf Of Umesan
> Sent: Wednesday, April 08, 2009 6:57 PM
> To: materials-welding@googlegroups.com
> Subject: [MW:1898] Multi layer weld capping in SAW
>
> Gents,
>
> Does anybody knows why multi layer weld capping, especially in sub arc
> welding, is preferred than single capping weld? Is there any metallurgical
> affect due to dilution in single layer weld capping?
>
> Rgds
>
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>   _____  
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> Maritime Industrial Services Co. Ltd. Inc. (MIS)
> Corporate Office: Oilfields Supply Center, JAFZA, P.O.Box 11791, Dubai, UAE.
> Tel:+971-4-883-7040, Fax: +971-4-883-6484
> Sharjah Operation: P.O. Box 4596, Sharjah, UAE, Tel:+971-6-528-5345Fax:
> +971-6-528-5820 Website:www.miscoltd.com
>
>   _____  
>
> The content of this e-mail together with any attachments, statements and
> opinions expressed herein contain information that may be private and
> confidential, and are intended for the named recipient/s of the mail only.
>
> Protect the Environment ? do you really need to print this email?

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