Dear All,
Fully agree with Mr. Raghuram's feedback.
At the same time, like to draw the attention to guidelines given by API.
API 582 Clause no. 6.2.2 further restricts use of Ni based electrodes as per following design temperature.
Electrrode Max, Design Temp ( Non -Sulphur Environment) Max Desing Temp. ( sulphur Environment)
E NiCrFe3 540 C 370 C
ERNiCr3 760 C 400C
ENiCrFe2 760 C 400C
ERNiCrMo3 590 C 590C
With Best Regards,
Jignesh R Rana
Manager - QA & QC
Linde Engineering India Pvt. Ltd.
38, Nutan Bharat Society, Alkapuri, Vadodara 390007, India
Tel.: +91 265 3056789, Fax: +91 265 2335213 , Mobil: +91 90999 86019
jignesh.rana@linde-le.com, www.linde-india.com
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| Raghuram Bathula <raghurambathula@gmail.com> Sent by: materials-welding@googlegroups.com 22/07/10 20:10
|
|
it depends on various parameters like thickness involved, code of construction and design conditions.
If DT>315 °C or PWHT is involved Inconel is preferred.
On Thu, Jul 22, 2010 at 5:37 PM, Kavathekar, Sachin <Sachin.Kavathekar@jacobs.com> wrote:
Clad thk is 3mm.
But why Inconel?
Regards,
Sachin A Kavathekar.
-----Original Message-----
From: materials-welding@googlegroups.com
[mailto:materials-welding@googlegroups.com] On Behalf Of B.Raghuram
Sent: Thursday, July 22, 2010 5:32 PM
To: materials-welding@googlegroups.com
Subject: RE: [MW:6076] disimilar welding
What is you clad thickness? If there no restriction from process point of
view, weld full thick by 309, or Inconel.
sent from my handheld
-----Original Message-----
From: Muhammed Ibrahim PK
Sent: 22/07/2010 4:29:14 pm
Subject: Re: [MW:6075] disimilar welding
Hi,
They have to do carbon steel buttweld first.
Then clad restoration of the joint with 309LMO Barrier layer and 316L for
subsequent layer.
Thanks & Regards
Muhammed Ibrahim PK
On 22 July 2010 13:37, Kavathekar, Sachin
<Sachin.Kavathekar@jacobs.com>wrote:
>
>
> Dear All,
>
>
>
> My site contractor to do pipe long seam welding of SA516 GR. 70 + SS316
> cladded plate material. Back chip is not accessible of this joint.
>
>
>
> They have query, if first complete SS316 welding by using 316 electrode/
> filler wire & subsequent layer will be E- 309MO & E- 7018.
>
>
>
> Is it acceptable? I think they should do welding with E- 309MO up to carbon
> steel after 316 welding.
>
>
> Please advice.
>
> Regards,
>
> Sachin A Kavathekar
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