Thursday, June 30, 2016

[MW:25039] RE: 25036] RE: 25027] impact results - UHT material welding

Hi Fernando,

 

Welding of 517 grades is never easy. It becomes difficult when impact properties are in question. If you could share details about (MTR) the materials, welding consumable, and the failed PQR, then there could be some meaningful suggestions provided.

 

Thanks.

 

 

 

Pradip Goswami, P.Eng,IWE
Independent Welding & Metallurgical Engineering Specialist ,
Ontario,Canada.
ca.linkedin.com/pub/pradip-goswami/5/985/299

pgoswami@quickclic.net

pradip.goswami@gmail.com

 

From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Alan Denney
Sent: Thursday, June 30, 2016 4:43 AM
To: materials-welding@googlegroups.com
Subject: [MW:25036] RE: 25027] impact results - UHT material welding

 

There is an assumption here that the weld as deposited met the certificate values which reduced as a result of the PWHT. I don’t expect that you had anything like the certificate results in your weld as-welded. Was it tested in the as-welded condition for comparison purposes? Normally PWHT would improve the results (not always though – because you are into the finer points of the weld metallurgy here). It is the way the weld has been deposited which gave the poor results, not what that consumable can achieve when deposited under ideal conditions.

 

Alan Denney

AKD Materials Consulting Ltd

 

 

From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Fernando L Neto
Sent: 29 June 2016 20:00
To: materials-welding@googlegroups.com
Subject: [MW:25027] impact results - UHT material welding

 

Dear colleagues, 

 

I hope this email finds all you well

 

Project: ASME VIII- Pressure vessel - material ASME SA517 Gr B. Thickness 9,5 mm.

 

 I have to qualify a WPS for welding ASME SA517 - B with impact requirements at -40 C, 

 

Also is required PWHT, and my first results of impact test @-40C of test plate were very low. (lateral expansion less than 0,2mm and energy less than 20J)

 

The declared Values of certificate of consumable is 75J @ -73C  !!!

 

Can the presence of PWHT changes so much the values of impact test? (certificate´s value is "as welded" and my results is "after PWHT".

 

Any help will be very useful. 

 

Thanks a lot, 

 

Fernando Lescovar Neto (IWE)

 

 

 

 

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By - No comments:

Re: [MW:25036] Chang in groove angle

If it's tky joint you shall qualify in 6 gr position in accordance with d1.1

Sent from my iPhone

On Jun 30, 2016, at 9:20 AM, Kannayeram Gnanapandithan <kgpandithan@gmail.com> wrote:

Question is for D1.1

THANKS & BEST REGARDS,
KG.PANDITHAN, IWE,  AWS-CWI, CSWIP 3.1,
CONSULTANT-WELDING & QUALITY
Mobile no: +919940739349

On Wed, Jun 29, 2016 at 2:19 PM, pradip kumar Sil <pradipsil@gmail.com> wrote:
Groove design is not the essential variable as per ASME Sec IX 

On Wed, Jun 29, 2016 at 10:29 AM, shaik amjad <amjadshaik7842@gmail.com> wrote:
Dear All

I have a PQR qualified in double v bevel  can i write a wps for single v using this PQR (code is AWS D1.1).

I have a PQR qualified with double v joint , but in construction we need for TYK Joint ie single V ., So my question is can i write a WPS using this PQR nd change grove as Single V.

Regards 

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Re: [MW:25036] Tensile test after simulation PWHT

per plate?

THANKS & BEST REGARDS,
KG.PANDITHAN, IWE,  AWS-CWI, CSWIP 3.1,
CONSULTANT-WELDING & QUALITY
Mobile no: +919940739349

On Thu, Jun 30, 2016 at 12:16 PM, Vishal Sharma <vishalsharma.sharma225@gmail.com> wrote:
Dear Experts,

Please advice test specimen required per heat or per plate for tensile test after simulation PWHT.

Regards,
Vishal Sharma

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[MW:25036] RE: 25027] impact results - UHT material welding

There is an assumption here that the weld as deposited met the certificate values which reduced as a result of the PWHT. I don't expect that you had anything like the certificate results in your weld as-welded. Was it tested in the as-welded condition for comparison purposes? Normally PWHT would improve the results (not always though – because you are into the finer points of the weld metallurgy here). It is the way the weld has been deposited which gave the poor results, not what that consumable can achieve when deposited under ideal conditions.

 

Alan Denney

AKD Materials Consulting Ltd

 

 

From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Fernando L Neto
Sent: 29 June 2016 20:00
To: materials-welding@googlegroups.com
Subject: [MW:25027] impact results - UHT material welding

 

Dear colleagues, 

 

I hope this email finds all you well

 

Project: ASME VIII- Pressure vessel - material ASME SA517 Gr B. Thickness 9,5 mm.

 

 I have to qualify a WPS for welding ASME SA517 - B with impact requirements at -40 C, 

 

Also is required PWHT, and my first results of impact test @-40C of test plate were very low. (lateral expansion less than 0,2mm and energy less than 20J)

 

The declared Values of certificate of consumable is 75J @ -73C  !!!

 

Can the presence of PWHT changes so much the values of impact test? (certificate´s value is "as welded" and my results is "after PWHT".

 

Any help will be very useful. 

 

Thanks a lot, 

 

Fernando Lescovar Neto (IWE)

 

 

 

 

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[MW:25032] PQR Qualification

Dear experts

Please reply with your suggestions for the below mentioned query,

We are going to conduct the pqr qualification test for base metal - SA 516 gr.70(P 1 Gr.1,2 to P1 Gr.1,2) as per ASME Sec.IX

Thickness of Base metal is 20 mm

Which type of heat treatment is required during welding
Preheat
Interpass heating
PWHT

Thanks in advance







Sent from Samsung Mobile
By - No comments:

[MW:25032] Tensile test after simulation PWHT

Dear Experts,

Please advice test specimen required per heat or per plate for tensile test after simulation PWHT.

Regards,
Vishal Sharma

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Re: [MW:25032] Chang in groove angle

Question is for D1.1

THANKS & BEST REGARDS,
KG.PANDITHAN, IWE,  AWS-CWI, CSWIP 3.1,
CONSULTANT-WELDING & QUALITY
Mobile no: +919940739349

On Wed, Jun 29, 2016 at 2:19 PM, pradip kumar Sil <pradipsil@gmail.com> wrote:
Groove design is not the essential variable as per ASME Sec IX 

On Wed, Jun 29, 2016 at 10:29 AM, shaik amjad <amjadshaik7842@gmail.com> wrote:
Dear All

I have a PQR qualified in double v bevel  can i write a wps for single v using this PQR (code is AWS D1.1).

I have a PQR qualified with double v joint , but in construction we need for TYK Joint ie single V ., So my question is can i write a WPS using this PQR nd change grove as Single V.

Regards 

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Re: [MW:25032] impact results - UHT material welding

yes in Q&T steel,. before taking up for PWHT, better consult manufacturers for temperature and Time

THANKS & BEST REGARDS,
KG.PANDITHAN, IWE,  AWS-CWI, CSWIP 3.1,
CONSULTANT-WELDING & QUALITY
Mobile no: +919940739349

On Thu, Jun 30, 2016 at 12:30 AM, Fernando L Neto <fernando.lescovar@gmail.com> wrote:
Dear colleagues, 

I hope this email finds all you well

Project: ASME VIII- Pressure vessel - material ASME SA517 Gr B. Thickness 9,5 mm.

 I have to qualify a WPS for welding ASME SA517 - B with impact requirements at -40 C, 

Also is required PWHT, and my first results of impact test @-40C of test plate were very low. (lateral expansion less than 0,2mm and energy less than 20J)

The declared Values of certificate of consumable is 75J @ -73C  !!!

Can the presence of PWHT changes so much the values of impact test? (certificate´s value is "as welded" and my results is "after PWHT".

Any help will be very useful. 

Thanks a lot, 

Fernando Lescovar Neto (IWE)




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Re: [MW:25031] Chemical Composition

I see quite complicated my very dear sir, it is easiest to think, that in my humble opinion; make again inspection with PMI, this equipment contains a database large enough to pipe carbon steel or otherwise of the materials listed in Section II of ASME, then you give one or two suggestions of material to inspected and already with that outcome consult the code again, it will be easier to hit it to the identification of the material no desire to annoy, that inspection is best done when the materials are bought, to verify their authenticity before making installation and avoid catastrophic failures like the one you already have.

Libre de virus. www.avast.com

2016-06-28 23:42 GMT-05:00 'Rajnish Dixit' via Materials & Welding <materials-welding@googlegroups.com>:
Dear Mac,

The chemical composition/properties of the tested material are aprx. meeting with SA335 P1/P2.

It should be tested when the material was received through PMI to confirm major elements like Cr, Mo, etc.

Regards,
Rajnish

--------------------------------------------
On Wed, 6/29/16, 'Mac Palola' via Materials & Welding <materials-welding@googlegroups.com> wrote:

 Subject: [MW:25021] Chemical Composition
 To: "Materials & Welding" <materials-welding@googlegroups.com>
 Date: Wednesday, June 29, 2016, 12:07 AM

 Dear Sirs,

 Project: Coal fired power plant ASME B31.1 CODE

 We received a pipe material 1 inch dia with a material of
 A335 P91.
 This material had been welded.
 During operational, 2 years after, one pipe burst out.
 We send for testing to check the chemical composition.
 Please see attached docs.

 I checked on ASME Section II Part A and it was very far from
 the chemical requirements of A335 P91.

 My query is that, what kind of pipe material base on the
 result of test report.

 Your reply to this query will be highly appreciated.


 Regards,

 Mac








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[MW:25027] impact results - UHT material welding

Dear colleagues, 

I hope this email finds all you well

Project: ASME VIII- Pressure vessel - material ASME SA517 Gr B. Thickness 9,5 mm.

 I have to qualify a WPS for welding ASME SA517 - B with impact requirements at -40 C, 

Also is required PWHT, and my first results of impact test @-40C of test plate were very low. (lateral expansion less than 0,2mm and energy less than 20J)

The declared Values of certificate of consumable is 75J @ -73C  !!!

Can the presence of PWHT changes so much the values of impact test? (certificate´s value is "as welded" and my results is "after PWHT".

Any help will be very useful. 

Thanks a lot, 

Fernando Lescovar Neto (IWE)




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Wednesday, June 29, 2016

Re: [MW:25028] Chang in groove angle

Groove design is not the essential variable as per ASME Sec IX 

On Wed, Jun 29, 2016 at 10:29 AM, shaik amjad <amjadshaik7842@gmail.com> wrote:
Dear All

I have a PQR qualified in double v bevel  can i write a wps for single v using this PQR (code is AWS D1.1).

I have a PQR qualified with double v joint , but in construction we need for TYK Joint ie single V ., So my question is can i write a WPS using this PQR nd change grove as Single V.

Regards 

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Re: [MW:25028] COMBINATION PROCESS WPS

Dear Sir,

A new WPS is to made (say WPS-B) for GTAW.

When you are welding a joint where only GTAW is to be used then you have to use WPS-B and when you have to weld GTAW + SMAW then WPS-A to be followed.

Separate WPS are to be maintained because of this reasons. No code references for this.

When you are welding only with GTAW and mentioning WPS-A will make a misunderstanding that it is welded with GTAW + SMAW.

So my opinion is to make a new WPS with the same PQR and maintain both WPS depends on the process you are using to weld.

Regards,

Hareesh K V
+91-8547859202

On 29 Jun 2016 9:10 am, "Rajesh S.Mhaske,Engineer Welding,CSWIP,ASNT,Pune," <rajesh.mhaske17@gmail.com> wrote:
Dear
  Not required to prepared the New WPS.

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Re: [MW:25027] Chang in groove angle

, but other essential variable to addressed, for example deletion of back gouging is essential, so u can not

THANKS & BEST REGARDS,
KG.PANDITHAN, IWE,  AWS-CWI, CSWIP 3.1,
CONSULTANT-WELDING & QUALITY
Mobile no: +919940739349

On Wed, Jun 29, 2016 at 10:59 AM, shaik amjad <amjadshaik7842@gmail.com> wrote:
Dear All

I have a PQR qualified in double v bevel  can i write a wps for single v using this PQR (code is AWS D1.1).

I have a PQR qualified with double v joint , but in construction we need for TYK Joint ie single V ., So my question is can i write a WPS using this PQR nd change grove as Single V.

Regards 

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[MW:25026] Chang in groove angle

Dear All

I have a PQR qualified in double v bevel  can i write a wps for single v using this PQR (code is AWS D1.1).

I have a PQR qualified with double v joint , but in construction we need for TYK Joint ie single V ., So my question is can i write a WPS using this PQR nd change grove as Single V.

Regards 

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Re: [MW:25025] Chemical Composition

Dear Mac,

The chemical composition/properties of the tested material are aprx. meeting with SA335 P1/P2.

It should be tested when the material was received through PMI to confirm major elements like Cr, Mo, etc.

Regards,
Rajnish

--------------------------------------------
On Wed, 6/29/16, 'Mac Palola' via Materials & Welding <materials-welding@googlegroups.com> wrote:

Subject: [MW:25021] Chemical Composition
To: "Materials & Welding" <materials-welding@googlegroups.com>
Date: Wednesday, June 29, 2016, 12:07 AM

Dear Sirs,

Project: Coal fired power plant ASME B31.1 CODE

We received a pipe material 1 inch dia with a material of
A335 P91.
This material had been welded.
During operational, 2 years after, one pipe burst out.
We send for testing to check the chemical composition.
Please see attached docs.

I checked on ASME Section II Part A and it was very far from
the chemical requirements of A335 P91.

My query is that, what kind of pipe material base on the
result of test report.

Your reply to this query will be highly appreciated.


Regards,

Mac








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Re: [MW:25024] Chemical Composition

what was origina chemistry hardness  is very low

THANKS & BEST REGARDS,
KG.PANDITHAN, IWE,  AWS-CWI, CSWIP 3.1,
CONSULTANT-WELDING & QUALITY
Mobile no: +919940739349

On Wed, Jun 29, 2016 at 1:37 AM, 'Mac Palola' via Materials & Welding <materials-welding@googlegroups.com> wrote:
Dear Sirs,

Project: Coal fired power plant ASME B31.1 CODE

We received a pipe material 1 inch dia with a material of A335 P91.
This material had been welded.
During operational, 2 years after, one pipe burst out.
We send for testing to check the chemical composition. Please see attached docs.

I checked on ASME Section II Part A and it was very far from the chemical requirements of A335 P91.

My query is that, what kind of pipe material base on the result of test report.

Your reply to this query will be highly appreciated.


Regards,

Mac




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Re: [MW:25020] Relation between diffusible hydrogen and welding current

Dear George,

Thank you very much for the document shared. It's very useful.

Pravin Poornachandran


Sent from my iPhone

On 27 Jun 2016, at 20:58, George Dilintas <dilintas@gmail.com> wrote:


2016-06-27 13:30 GMT+03:00 Pravin G <htcispravin@gmail.com>:
Dear expert,

What is the correlation between diffusible hydrogen and welding current.

How does Welding current affects diffusible hydrogen ? Based on any specific code or theory?

Kindly help to explain.

Pravin Poornachandran
Singapore
Sent from my iPhone

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A.I.S, A.N.I, IRCA Lead Auditor
Welding, Stress Analysis, Corrosion, QA/QC, Failure Analysis, Risk Analysis

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[MW:25021] Chemical Composition

Dear Sirs,

Project: Coal fired power plant ASME B31.1 CODE

We received a pipe material 1 inch dia with a material of A335 P91.
This material had been welded.
During operational, 2 years after, one pipe burst out.
We send for testing to check the chemical composition. Please see attached docs.

I checked on ASME Section II Part A and it was very far from the chemical requirements of A335 P91.

My query is that, what kind of pipe material base on the result of test report.

Your reply to this query will be highly appreciated.


Regards,

Mac




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Re: [MW:25023] COMBINATION PROCESS WPS

Dear
Not required to prepared the New WPS.

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Tuesday, June 28, 2016

Re: [MW:25020] Relation between diffusible hydrogen and welding current

Yes, diffusible hydrogen is more, more arc voltage is required to push the current due to bad conduct electricity by Hydrogen. Example 6010 is required more arc voltage when compared with 7018

On 28-Jun-2016 4:51 pm, <dilintas@gmail.com> wrote:
Research papers demonstrate the contrary

Sent from my BlackBerry 10 smartphone.
From: 'prem_nautiyal26' via Materials & Welding
Sent: Τρίτη, 28 Ιουνίου 2016 - 09:12
Subject: Re: [MW:25017] Relation between diffusible hydrogen and welding current


There is no relation between diffusible hydrogen content and Welding current.



Sent from my Samsung Galaxy smartphone.

-------- Original message --------
From: Pravin G <htcispravin@gmail.com>
Date: 27/06/2016 16:00 (GMT+05:30)
To: 'Agustin Jimenez' via Materials & Welding <materials-welding@googlegroups.com>
Subject: [MW:25011] Relation between diffusible hydrogen and welding current

Dear expert,

What is the correlation between diffusible hydrogen and welding current.

How does Welding current affects diffusible hydrogen ? Based on any specific code or theory?

Kindly help to explain.

Pravin Poornachandran
Singapore
Sent from my iPhone

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By - No comments:

Re: [MW:25019] Relation between diffusible hydrogen and welding current

Research papers demonstrate the contrary

Sent from my BlackBerry 10 smartphone.
From: 'prem_nautiyal26' via Materials & Welding
Sent: Τρίτη, 28 Ιουνίου 2016 - 09:12
To: materials-welding@googlegroups.com
Reply To: materials-welding@googlegroups.com
Subject: Re: [MW:25017] Relation between diffusible hydrogen and welding current


There is no relation between diffusible hydrogen content and Welding current.



Sent from my Samsung Galaxy smartphone.

-------- Original message --------
From: Pravin G <htcispravin@gmail.com>
Date: 27/06/2016 16:00 (GMT+05:30)
To: 'Agustin Jimenez' via Materials & Welding <materials-welding@googlegroups.com>
Subject: [MW:25011] Relation between diffusible hydrogen and welding current

Dear expert,

What is the correlation between diffusible hydrogen and welding current.

How does Welding current affects diffusible hydrogen ? Based on any specific code or theory?

Kindly help to explain.

Pravin Poornachandran
Singapore
Sent from my iPhone

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By - No comments:

[MW:25018] Re: POAK MRKS ON SAW WELDING

Reduce the proporción of recycled flux.Ensure no moisture in flux by keeping and baking properly and in case situatión continúes.increase the proporción of new flux (100%).

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Monday, June 27, 2016

Re: [MW:25017] Relation between diffusible hydrogen and welding current


There is no relation between diffusible hydrogen content and Welding current.



Sent from my Samsung Galaxy smartphone.

-------- Original message --------
From: Pravin G <htcispravin@gmail.com>
Date: 27/06/2016 16:00 (GMT+05:30)
To: 'Agustin Jimenez' via Materials & Welding <materials-welding@googlegroups.com>
Subject: [MW:25011] Relation between diffusible hydrogen and welding current

Dear expert,

What is the correlation between diffusible hydrogen and welding current.

How does Welding current affects diffusible hydrogen ? Based on any specific code or theory?

Kindly help to explain.

Pravin Poornachandran
Singapore
Sent from my iPhone

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[MW:35346] Cast-iron welding

Any advice for cast iron welding Sent from Yahoo Mail for iPhone

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