Re: [MW:30008] Requirement of double Normalizing of SA-516 Gr.70

Why intermediate Normalizing required???. 

On Fri, 30 Aug 2019 12:29 pm 'Prakash Hegde' via Materials & Welding, <materials-welding@googlegroups.com> wrote:

Hi!

With multiple normalising.UTS gets deteoriates

Accordingly  ddelivery condition.of.plate.you req UTS on higher side than min requirement

Ii) Generaly for highet.thick weld.seam multiple Normalising.ll.reduce UTS as such Normalising criteria.is not.addressed in.Sec IX.or.Div 1 of ASME

THATS why most of the designer recomend Crown.n Petal.for higher thk.Dends

Regards

Hegde

Sent from Yahoo Mail on Android

On Fri, 30 Aug 2019 at 11:51, Jayesh Parekh

<jayeshparekh34@gmail.com> wrote:

In our recent project i encounter one problem.

Material Grade : SA-516 Gr.70 Supply condition : Normalized

Dished end : Ellipsodial

Thickness : 45 mm

Forming process : Cold forming

Dished end have one cordal seam

Impact required at : -46 deg. C

so during cold forming vendor need one intermediate normalizing. and as per client requirement one more normalizing performed after complete dished end forming. So, total 2 time normalizing have to perform.

So, my question is ; 

(1) During plate order i have to take 2 normalizing cycle simulation ? Yes Or No? With Reason

(2) May I take benefit of Clause UCS-85 (i) of ASME sec-8 Div.1?

(3) Is same clause applicable for welding?

(4) And If i will perform double normalizing then I have to simply double the normalizing time or 2 separate normalizing i have to perform?

(5) What will be effect on weld and base material after 2 time Normalizing?

(6) if any one encountered such issues . please help to solve 

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