Re: [MW:33198] SA 387 GR 11 CL2 and SA 387 GR 22 CL2

Yes. Preferred is crown & petal construction for LAS.

On Thu, Jun 16, 2022 at 10:13 PM Vanchinath S.A. <vanchinaths@gmail.com> wrote:

Low alloy steel weld will fail after Q&T or N&T. crown and petal is the answer.

regards

vanchi

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On Fri, 17 Jun 2022 at 09:34, Vishwas Keskar <vvkeskar123@gmail.com> wrote:

Yes ,I too think the same way.

But want to understand /know what is followed  by other fabricaters when this condition arises.

On Fri, 17 Jun 2022, 08:49 'Prakash Hegde' via Materials & Welding, <materials-welding@googlegroups.com> wrote:

Hi

Its bit complicated

Does gr22 plates undergone simulation Heat treatment Generaly this Mail is QT and  Nr T is not prefered if NR T

 you require to carry NR T  and further PWHt on welded coupon and it is bit difficult to achieve property on weld by following NRT +pwht as per original plate Nr T (supplied condition

Generally such steel is welded using 9015EB3

Better go for crown and petal system for D end

What is the thk of Dend

Regards

Hegde

As 

You dont get Consumbles for 

a

les

Sent from Yahoo Mail on Android

On Thu, 16 Jun 2022 at 11:56, Vishwas Keskar Welding Manager  WELDING

<vvkeskar123@gmail.com> wrote:

Experts 

The dished end is to be fabricated with one number Chordal seam  for MOC of 

1) SA 387 GR 11 CL2

2)SA 387 GR 22  CL2

One  chordal seam in dished end is coming due  to plate  size( width) limitation  and the  diameter required of  dished end. So butt joint welding is to be done  followed by NDT .

Hot forming is planned . After forming is completed, separate   Normalizing and tempering Heat treatment is required as per Client specification.

PQR is to be established as per ASME SEC IX  .

Pl. suggest suitable consumable  and maintain strength 

Pl. share experience if any 

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