Materials & Welding: August 2017

Thursday, August 31, 2017

Re: [MW:26780] Regarding brand name of welding consumable.

Hi all,

Normally for sour service application , brand is an essential variable only for Nickel base and duplex consumable . Trade name may vary and can be changed as long as same F number and A number is matching need to make one additional supplement chemical analysis and you may proceed if client agrees.

This is my suggestion only.

P.NEILASHKUMAR

Sent from my iPad

MOB : 966 551094590

+91 9952110791

On 31-Aug-2017, at 10:35 AM, PREM SHANKARDUTT NAUTIYAL <prem_nautiyal@rediffmail.com> wrote:

ESAB is the welding consumable manufacturer name whereas OK TIGROD 16.30 is the Brand Name.
Hence in this case the change in brand name is an essential variable.

Regards

Prem Nautiyal

On Wed, 30 Aug 2017 19:38:26 +0530 "'james gerald' via Materials & Welding" wrote
> It is change from OK TIGROD16.30 to OK TIGROD16.10, For Sour Service as defined by the Materials Engineer with certain PPM & PH of H2S, the above change is an essential variable.

Thanks & RegardsJ.Gerald Jayakumar0091-9344954677

From: Umang Parikh
To: materials-welding@googlegroups.com
Sent: Wednesday, August 30, 2017 11:34 AM
Subject: [MW:26764] Regarding brand name of welding consumable.

Dear friends,Please clarify below point.( This is one of the project spec.)
"Any change in brand name of the filler metal if the service is sour"
What is the meaning of this sentence.Is it mean to say change in the company name or company product name.i.e ESAB TO ESAB orits product OK TIGROD 16.30 TO OK TIGROD 16.10.
Can we make WPS of 316L with supporting PQR 304L if the above clause is essential variable as per project spec.
Appreciate to have views on above point ASAP

--

https://materials-welding.blogspot.com/

https://www.linkedin.com/groups/122787

---

You received this message because you are subscribed to the Google Groups "Materials & Welding" group.

To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com.

Visit this group at https://groups.google.com/group/materials-welding.

For more options, visit https://groups.google.com/d/optout.

--
>
https://materials-welding.blogspot.com/
>
https://www.linkedin.com/groups/122787
>
---
>
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
>
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com.
>
Visit this group at https://groups.google.com/group/materials-welding.
>
For more options, visit https://groups.google.com/d/optout.
>

PREM S NAUTIYAL
CELL : 9769316004

--
https://materials-welding.blogspot.com/
https://www.linkedin.com/groups/122787
---
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com.
Visit this group at https://groups.google.com/group/materials-welding.
For more options, visit https://groups.google.com/d/optout.

[MW:26777] Hardness unit

Dear Experts,

We are using the MH310 Leeb Hardness Tester to check the hardness of the piping weld joints ( For production- NACE material) . Project specification states that the maximum allowable value is 248 HV10. When using the MH310 Tester to check, the Tester only shows the unit HV (not specified HV10). Client QC worry about unit of value: the HV unit displayed is HV10 or HV. HV/HV10 are equivalent ? Client required to clarify.

Please help me to clarify this issue and give reference.

Thank you so much.

GIGI

Piping Inspector

Re: [MW:26777] Regarding brand name of welding consumable.

ESAB is the welding consumable manufacturer name whereas OK TIGROD 16.30 is the Brand Name.
Hence in this case the change in brand name is an essential variable.

Regards

Prem Nautiyal

On Wed, 30 Aug 2017 19:38:26 +0530 "'james gerald' via Materials & Welding" wrote
> It is change from OK TIGROD16.30 to OK TIGROD16.10, For Sour Service as defined by the Materials Engineer with certain PPM & PH of H2S, the above change is an essential variable.

Thanks & RegardsJ.Gerald Jayakumar0091-9344954677

From: Umang Parikh
To: materials-welding@googlegroups.com
Sent: Wednesday, August 30, 2017 11:34 AM
Subject: [MW:26764] Regarding brand name of welding consumable.

Dear friends,Please clarify below point.( This is one of the project spec.)
"Any change in brand name of the filler metal if the service is sour"
What is the meaning of this sentence.Is it mean to say change in the company name or company product name.i.e ESAB TO ESAB orits product OK TIGROD 16.30 TO OK TIGROD 16.10.
Can we make WPS of 316L with supporting PQR 304L if the above clause is essential variable as per project spec.
Appreciate to have views on above point ASAP

--

https://materials-welding.blogspot.com/

https://www.linkedin.com/groups/122787

---

You received this message because you are subscribed to the Google Groups "Materials & Welding" group.

To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com.

Visit this group at https://groups.google.com/group/materials-welding.

For more options, visit https://groups.google.com/d/optout.

--
>
https://materials-welding.blogspot.com/
>
https://www.linkedin.com/groups/122787
>
---
>
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
>
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com.
>
Visit this group at https://groups.google.com/group/materials-welding.
>
For more options, visit https://groups.google.com/d/optout.
>

PREM S NAUTIYAL
CELL : 9769316004

--
https://materials-welding.blogspot.com/
https://www.linkedin.com/groups/122787
---
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com.
Visit this group at https://groups.google.com/group/materials-welding.
For more options, visit https://groups.google.com/d/optout.

Re: [MW:26777] VALIDATION OF THE WELDING PROCESS FOR THE HARD FACING AND SEAT RING OF THE GATE VALVES

Dear Mr Neilesh Kumar

Thanks for the quick response. I shall use it and in case of any doubt I will seek your advice.

Thanks and regards

N S Gurm

On 31-Aug-2017 11:54, "'Neilash Kumar' via Materials & Welding" <materials-welding@googlegroups.com> wrote:

Hi ,

Its good to see your mail subject regarding validation , There is separate clause in API SPEC Q1 & API 5LD Section 7.5.2

Here are some information that you need to maintain separate format for Welding process validation.

A- DETAILS OF EQUIPMENT USED FOR VALIDATION
The process equipment's used for the validation shall be proven capable of performing the task for which they were designated

B- QUALIFICATION OF PERSONNEL INVOLVE IN THE VALIDATION
Welding Engineer / QC engineer shall ensure that only qualified personnel are assigned for the respective process, includes the weld overlay operator qualification

C- CRITERIA FOR REVIEW AND APPROVAL OF THE PROCESSS
Criteria for review and approval of the process shall be based on the criteria requirement specified in the appropriate qualification code and standard.

D-USE OF SPECIFIC METHOD AND PROCEDURES
WPS, PQR, Materials used, code requirements, specifications, procedures, inspection and testing, defining the acceotance criteria and its reference documents

E- REQUIREMENTS OF RECORDS
Equipment Operation Manual
Maintenance Records of Equipment
Calibration records for control pannel
Qualified WPS & PQR records
Operators Qualification records
Inspection & Testing records

Hope this clarifies your query and proceed further.

NEILASHKUMAR.P
WELDING ENGINEER

On Thursday, 31 August 2017 9:06 AM, Nachhattar Singh <nachhattar1947@gmail.com> wrote:

Dear Experts

I am required to submit to the client as to how the "VALIDATION OF THE WELDING PROCESS FOR
THE HARD FACING AND SEAT RING WELDING OF THE GATE VALVES" will be done. Following has already
Been complied and submitted but the client wants some more to be done:-

01.   WPS is accepted as submitted.
02.   PQR based on the WPS is in place and accepted.
03.   Heat treatment is not the requirement.

Please advise what else should be done, give the reference of such requirements.

Thanks in advance

NS Gurm

PLEASE THINK BEFORE PRINTING

--
https://materials-welding.blogspot.com/
https://www.linkedin.com/groups/122787
---
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com.
Visit this group at https://groups.google.com/group/materials-welding.
For more options, visit https://groups.google.com/d/optout.

--
https://materials-welding.blogspot.com/
https://www.linkedin.com/groups/122787
---
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com.
Visit this group at https://groups.google.com/group/materials-welding.
For more options, visit https://groups.google.com/d/optout.

Re: [MW:26776] VALIDATION OF THE WELDING PROCESS FOR THE HARD FACING AND SEAT RING OF THE GATE VALVES

Hi ,

Its good to see your mail subject regarding validation , There is separate clause in API SPEC Q1 & API 5LD Section 7.5.2

Here are some information that you need to maintain separate format for Welding process validation.

A- DETAILS OF EQUIPMENT USED FOR VALIDATION

The process equipment's used for the validation shall be proven capable of performing the task for which they were designated

B- QUALIFICATION OF PERSONNEL INVOLVE IN THE VALIDATION

Welding Engineer / QC engineer shall ensure that only qualified personnel are assigned for the respective process, includes the weld overlay operator qualification

C- CRITERIA FOR REVIEW AND APPROVAL OF THE PROCESSS

Criteria for review and approval of the process shall be based on the criteria requirement specified in the appropriate qualification code and standard.

D-USE OF SPECIFIC METHOD AND PROCEDURES

WPS, PQR, Materials used, code requirements, specifications, procedures, inspection and testing, defining the acceotance criteria and its reference documents

E- REQUIREMENTS OF RECORDS

Equipment Operation Manual

Maintenance Records of Equipment

Calibration records for control pannel

Qualified WPS & PQR records

Operators Qualification records

Inspection & Testing records

Hope this clarifies your query and proceed further.

NEILASHKUMAR.P

WELDING ENGINEER

On Thursday, 31 August 2017 9:06 AM, Nachhattar Singh <nachhattar1947@gmail.com> wrote:

Dear Experts

I am required to submit to the client as to how the "VALIDATION OF THE WELDING PROCESS FOR

THE HARD FACING AND SEAT RING WELDING OF THE GATE VALVES" will be done. Following has already

Been complied and submitted but the client wants some more to be done:-

01. WPS is accepted as submitted.

02. PQR based on the WPS is in place and accepted.

03. Heat treatment is not the requirement.

Please advise what else should be done, give the reference of such requirements.

Thanks in advance

NS Gurm

PLEASE THINK BEFORE PRINTING

[MW:26775] VALIDATION OF THE WELDING PROCESS FOR THE HARD FACING AND SEAT RING OF THE GATE VALVES

Dear Experts

I am required to submit to the client as to how the “VALIDATION OF THE WELDING PROCESS FOR

THE HARD FACING AND SEAT RING WELDING OF THE GATE VALVES” will be done. Following has already

Been complied and submitted but the client wants some more to be done:-

01. WPS is accepted as submitted.

02. PQR based on the WPS is in place and accepted.

03. Heat treatment is not the requirement.

Please advise what else should be done, give the reference of such requirements.

Thanks in advance

NS Gurm

PLEASE THINK BEFORE PRINTING

Wednesday, August 30, 2017

Re: [MW:26773] Pitting corrosion in Duplex material

Dear Sirs,

Normally for duplex aramco standards allow us to follow ASTM A923 Method C , please reconfirm ASTM G48 is required for duplex.

Additionally it is advise to do pickling before proceed for any test.

This is my suggestion and recommendation that i carried out during my PQR.

NEILASHKUMAR.P

On Wednesday, 30 August 2017 3:04 PM, Aby Jose <abycscec@gmail.com> wrote:

Dear Goswami sir,

The temperature of test was 40 degree celcius. Heat i/p for TIG was from 1.5 to 2.2 and for MAG 0.65 to 0.9. Pitting corrosion was observed both on root and in cap. But more in cap.

Regards,

Aby

On Wed, Aug 30, 2017 at 2:48 PM, pgoswami <pgoswami@quickclic.net> wrote:

What's the temperature for pitting corrosion test? What're the recorded welding parameters including heat input?
Appreciate your response.
Thanks.

Pradip Goswami.

Sent from my Bell Samsung device over Canada's largest network.

-------- Original message --------
From: Aby Jose <abycscec@gmail.com>
Date: 2017-08-30 03:40 (GMT-05:00)
To: materials-welding@ googlegroups.com
Subject: [MW:26765] Pitting corrosion in Duplex material

Dear experts,

Here I am preparing WPS for Duplex material using robotic welding machine. The details are as follows.

Material designation - SA 790 UNS S32205
Pipe dimension - 4", 6 mm thick
Welding process- TIG(Root), MAG(fillup & Cap)

After the PQT while doing the pitting corrosion test it got failed. The pitting corrosion test was done as per ASTM G 48.

For TIG welding earlier I had used 98% Ar + 2% H2 as shielding gas. Now I have changed it to 98%Ar + 2% N2.
For MAG welding pulse method is used. Shielding gas used is 98% Ar + 2% CO2. Purging gas used is 99.997 % Ar.
Heat i/p calculated is within the range 0.6 to 1.5. Also the interpass temperature was below 120 degree. What else can be the reason for Pitting corrosion? It came more in the capping. So I am worried about the shielding gas used for MAG. Which other shielding gas can I use for the MAG welding of duplex material??

Regards,
Aby K Jose
QA/QC Engineer
Qatar
+97430847911

--
https://materials-welding. blogspot.com/
https://www.linkedin.com/ groups/122787
---
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@ googlegroups.com.
Visit this group at https://groups.google.com/ group/materials-welding.
For more options, visit https://groups.google.com/d/ optout.

--
https://materials-welding. blogspot.com/
https://www.linkedin.com/ groups/122787
---
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@ googlegroups.com.
Visit this group at https://groups.google.com/ group/materials-welding.
For more options, visit https://groups.google.com/d/ optout.

Re: [MW:26774] Regarding brand name of welding consumable.

It is change from OK TIGROD16.30 to OK TIGROD16.10, For Sour Service as defined by the Materials Engineer with certain PPM & PH of H2S, the above change is an essential variable.

Thanks & Regards

J.Gerald Jayakumar

0091-9344954677

From: Umang Parikh <parikhhumang@gmail.com>
To: materials-welding@googlegroups.com
Sent: Wednesday, August 30, 2017 11:34 AM
Subject: [MW:26764] Regarding brand name of welding consumable.

Dear friends,

Please clarify below point.( This is one of the project spec.)

"Any change in brand name of the filler metal if the service is sour"

What is the meaning of this sentence.

Is it mean to say change in the company name or company product name.

i.e ESAB TO ESAB or

its product OK TIGROD 16.30 TO OK TIGROD 16.10.

Can we make WPS of 316L with supporting PQR 304L if the above clause is essential variable as per project spec.

Appreciate to have views on above point ASAP

Re: [MW:26772] Regarding brand name of welding consumable.

On 30-Aug-2017 1:25 pm, "Umang Parikh" <parikhhumang@gmail.com> wrote:

This message is eligible for Automatic Cleanup! (parikhhumang@gmail.com) Add cleanup rule | More info

Dear friends,
Please clarify below point.( This is one of the project spec.)

"Any change in brand name of the filler metal if the service is sour"

What is the meaning of this sentence.
Is it mean to say change in the company name or company product name.
i.e ESAB TO ESAB or
its product OK TIGROD 16.30 TO OK TIGROD 16.10.

Can we make WPS of 316L with supporting PQR 304L if the above clause is essential variable as per project spec.

Appreciate to have views on above point ASAP

--
https://materials-welding.blogspot.com/
https://www.linkedin.com/groups/122787
---
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com.
Visit this group at https://groups.google.com/group/materials-welding.
For more options, visit https://groups.google.com/d/optout.

Re: [MW:26771] Pitting corrosion in Duplex material

Thanks all for the quick response..

Regards,

Aby

On Wed, Aug 30, 2017 at 5:20 PM, Aby Jose <abycscec@gmail.com> wrote:

Dear Goswami sir,

The temperature of test was 40 degree celcius. Heat i/p for TIG was from 1.5 to 2.2 and for MAG 0.65 to 0.9. Pitting corrosion was observed both on root and in cap. But more in cap.

Regards,
Aby

On Wed, Aug 30, 2017 at 2:48 PM, pgoswami <pgoswami@quickclic.net> wrote:
What's the temperature for pitting corrosion test? What're the recorded welding parameters including heat input?
Appreciate your response.
Thanks.

Pradip Goswami.

Sent from my Bell Samsung device over Canada's largest network.

-------- Original message --------
From: Aby Jose <abycscec@gmail.com>
Date: 2017-08-30 03:40 (GMT-05:00)
To: materials-welding@googlegroups.com
Subject: [MW:26765] Pitting corrosion in Duplex material

Dear experts,

Here I am preparing WPS for Duplex material using robotic welding machine. The details are as follows.

Material designation - SA 790 UNS S32205
Pipe dimension - 4", 6 mm thick
Welding process- TIG(Root), MAG(fillup & Cap)

After the PQT while doing the pitting corrosion test it got failed. The pitting corrosion test was done as per ASTM G 48.

For TIG welding earlier I had used 98% Ar + 2% H2 as shielding gas. Now I have changed it to 98%Ar + 2% N2.
For MAG welding pulse method is used. Shielding gas used is 98% Ar + 2% CO2. Purging gas used is 99.997 % Ar.
Heat i/p calculated is within the range 0.6 to 1.5. Also the interpass temperature was below 120 degree. What else can be the reason for Pitting corrosion? It came more in the capping. So I am worried about the shielding gas used for MAG. Which other shielding gas can I use for the MAG welding of duplex material??

Regards,
Aby K Jose
QA/QC Engineer
Qatar
+97430847911

--
https://materials-welding.blogspot.com/
https://www.linkedin.com/groups/122787
---
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com.
Visit this group at https://groups.google.com/group/materials-welding.
For more options, visit https://groups.google.com/d/optout.

--
https://materials-welding.blogspot.com/
https://www.linkedin.com/groups/122787
---
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com.
Visit this group at https://groups.google.com/group/materials-welding.
For more options, visit https://groups.google.com/d/optout.

Re: [MW:26770] Pitting corrosion in Duplex material

Dear Goswami sir,

The temperature of test was 40 degree celcius. Heat i/p for TIG was from 1.5 to 2.2 and for MAG 0.65 to 0.9. Pitting corrosion was observed both on root and in cap. But more in cap.

Regards,

Aby

On Wed, Aug 30, 2017 at 2:48 PM, pgoswami <pgoswami@quickclic.net> wrote:

What's the temperature for pitting corrosion test? What're the recorded welding parameters including heat input?
Appreciate your response.
Thanks.

Pradip Goswami.

Sent from my Bell Samsung device over Canada's largest network.

-------- Original message --------
From: Aby Jose <abycscec@gmail.com>
Date: 2017-08-30 03:40 (GMT-05:00)
To: materials-welding@googlegroups.com
Subject: [MW:26765] Pitting corrosion in Duplex material

Dear experts,

Here I am preparing WPS for Duplex material using robotic welding machine. The details are as follows.

Material designation - SA 790 UNS S32205
Pipe dimension - 4", 6 mm thick
Welding process- TIG(Root), MAG(fillup & Cap)

After the PQT while doing the pitting corrosion test it got failed. The pitting corrosion test was done as per ASTM G 48.

For TIG welding earlier I had used 98% Ar + 2% H2 as shielding gas. Now I have changed it to 98%Ar + 2% N2.
For MAG welding pulse method is used. Shielding gas used is 98% Ar + 2% CO2. Purging gas used is 99.997 % Ar.
Heat i/p calculated is within the range 0.6 to 1.5. Also the interpass temperature was below 120 degree. What else can be the reason for Pitting corrosion? It came more in the capping. So I am worried about the shielding gas used for MAG. Which other shielding gas can I use for the MAG welding of duplex material??

Regards,
Aby K Jose
QA/QC Engineer
Qatar
+97430847911

--
https://materials-welding.blogspot.com/
https://www.linkedin.com/groups/122787
---
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com.
Visit this group at https://groups.google.com/group/materials-welding.
For more options, visit https://groups.google.com/d/optout.

--
https://materials-welding.blogspot.com/
https://www.linkedin.com/groups/122787
---
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com.
Visit this group at https://groups.google.com/group/materials-welding.
For more options, visit https://groups.google.com/d/optout.

Re: [MW:26769] Pitting corrosion in Duplex material

Suggest 2 percent addition of nitrogen to argon for gmaw of duplex SS for G48A, temperature asper ASTM.

On 30 Aug 2017 1:17 p.m., "Aby Jose" <abycscec@gmail.com> wrote:

Dear experts,

Here I am preparing WPS for Duplex material using robotic welding machine. The details are as follows.

Material designation - SA 790 UNS S32205
Pipe dimension - 4", 6 mm thick
Welding process- TIG(Root), MAG(fillup & Cap)

After the PQT while doing the pitting corrosion test it got failed. The pitting corrosion test was done as per ASTM G 48.

For TIG welding earlier I had used 98% Ar + 2% H2 as shielding gas. Now I have changed it to 98%Ar + 2% N2.
For MAG welding pulse method is used. Shielding gas used is 98% Ar + 2% CO2. Purging gas used is 99.997 % Ar.
Heat i/p calculated is within the range 0.6 to 1.5. Also the interpass temperature was below 120 degree. What else can be the reason for Pitting corrosion? It came more in the capping. So I am worried about the shielding gas used for MAG. Which other shielding gas can I use for the MAG welding of duplex material??

Regards,
Aby K Jose
QA/QC Engineer
Qatar
+97430847911

--
https://materials-welding.blogspot.com/
https://www.linkedin.com/groups/122787
---
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com.
Visit this group at https://groups.google.com/group/materials-welding.
For more options, visit https://groups.google.com/d/optout.

Re: [MW:26768] Pitting corrosion in Duplex material

Dear Sir,

We are also facing this problem than a third party suggest us 98%Ar + 2% N2 for shielding and purging, after use of that mixture you get better result (Corrosion test pass).

Regards,

Muhammad Babur Khan Lashari
Sr. QA/QC Inspector

(CSWIP 3.1 / CWI II From PWI)

Khaled Juffali Industrial Company

Mob: + 966 56 2179280 / 58 2774568

PAK : + 92 334 6186285

Skype: babur.lashari

E-Mail: babur.khan@kjgroup.com

On Wed, Aug 30, 2017 at 11:05 AM, 'james gerald' via Materials & Welding <materials-welding@googlegroups.com> wrote:

Please check the Purging Gas purity.

Thanks & Regards
J.Gerald Jayakumar
0091-9344954677

From: Aby Jose <abycscec@gmail.com>
To: materials-welding@googlegroups.com
Sent: Wednesday, August 30, 2017 11:56 AM
Subject: [MW:26765] Pitting corrosion in Duplex material

Dear experts,

Here I am preparing WPS for Duplex material using robotic welding machine. The details are as follows.

Material designation - SA 790 UNS S32205
Pipe dimension - 4", 6 mm thick
Welding process- TIG(Root), MAG(fillup & Cap)

After the PQT while doing the pitting corrosion test it got failed. The pitting corrosion test was done as per ASTM G 48.

For TIG welding earlier I had used 98% Ar + 2% H2 as shielding gas. Now I have changed it to 98%Ar + 2% N2.
For MAG welding pulse method is used. Shielding gas used is 98% Ar + 2% CO2. Purging gas used is 99.997 % Ar.
Heat i/p calculated is within the range 0.6 to 1.5. Also the interpass temperature was below 120 degree. What else can be the reason for Pitting corrosion? It came more in the capping. So I am worried about the shielding gas used for MAG. Which other shielding gas can I use for the MAG welding of duplex material??

Regards,
Aby K Jose
QA/QC Engineer
Qatar
+97430847911

--
https://materials-welding.blogspot.com/
https://www.linkedin.com/groups/122787
---
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com.
Visit this group at https://groups.google.com/group/materials-welding.
For more options, visit https://groups.google.com/d/optout.

--
https://materials-welding.blogspot.com/
https://www.linkedin.com/groups/122787
---
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com.
Visit this group at https://groups.google.com/group/materials-welding.
For more options, visit https://groups.google.com/d/optout.

Re: [MW:26766] Pitting corrosion in Duplex material

What's the temperature for pitting corrosion test? What're the recorded welding parameters including heat input?

Appreciate your response.

Thanks.

Pradip Goswami.

Sent from my Bell Samsung device over Canada's largest network.

-------- Original message --------

From: Aby Jose <abycscec@gmail.com>

Date: 2017-08-30 03:40 (GMT-05:00)

To: materials-welding@googlegroups.com

Subject: [MW:26765] Pitting corrosion in Duplex material

Dear experts,

Here I am preparing WPS for Duplex material using robotic welding machine. The details are as follows.

Material designation - SA 790 UNS S32205

Pipe dimension - 4", 6 mm thick

Welding process- TIG(Root), MAG(fillup & Cap)

After the PQT while doing the pitting corrosion test it got failed. The pitting corrosion test was done as per ASTM G 48.

For TIG welding earlier I had used 98% Ar + 2% H2 as shielding gas. Now I have changed it to 98%Ar + 2% N2.

For MAG welding pulse method is used. Shielding gas used is 98% Ar + 2% CO2. Purging gas used is 99.997 % Ar.

Heat i/p calculated is within the range 0.6 to 1.5. Also the interpass temperature was below 120 degree. What else can be the reason for Pitting corrosion? It came more in the capping. So I am worried about the shielding gas used for MAG. Which other shielding gas can I use for the MAG welding of duplex material??

Regards,

Aby K Jose

QA/QC Engineer

Qatar

+97430847911

Re: [MW:26767] Pitting corrosion in Duplex material

Please check the Purging Gas purity.

Thanks & Regards

J.Gerald Jayakumar

0091-9344954677

From: Aby Jose <abycscec@gmail.com>
To: materials-welding@googlegroups.com
Sent: Wednesday, August 30, 2017 11:56 AM
Subject: [MW:26765] Pitting corrosion in Duplex material

Dear experts,

Here I am preparing WPS for Duplex material using robotic welding machine. The details are as follows.

Material designation - SA 790 UNS S32205

Pipe dimension - 4", 6 mm thick

Welding process- TIG(Root), MAG(fillup & Cap)

After the PQT while doing the pitting corrosion test it got failed. The pitting corrosion test was done as per ASTM G 48.

For TIG welding earlier I had used 98% Ar + 2% H2 as shielding gas. Now I have changed it to 98%Ar + 2% N2.

For MAG welding pulse method is used. Shielding gas used is 98% Ar + 2% CO2. Purging gas used is 99.997 % Ar.

Regards,

Aby K Jose

QA/QC Engineer

Qatar

+97430847911

[MW:26765] Pitting corrosion in Duplex material

Dear experts,

Here I am preparing WPS for Duplex material using robotic welding machine. The details are as follows.

Material designation - SA 790 UNS S32205

Pipe dimension - 4", 6 mm thick

Welding process- TIG(Root), MAG(fillup & Cap)

After the PQT while doing the pitting corrosion test it got failed. The pitting corrosion test was done as per ASTM G 48.

For TIG welding earlier I had used 98% Ar + 2% H2 as shielding gas. Now I have changed it to 98%Ar + 2% N2.

For MAG welding pulse method is used. Shielding gas used is 98% Ar + 2% CO2. Purging gas used is 99.997 % Ar.

Regards,

Aby K Jose

QA/QC Engineer

Qatar

+97430847911

[MW:26764] Regarding brand name of welding consumable.

Dear friends,

Please clarify below point.( This is one of the project spec.)

"Any change in brand name of the filler metal if the service is sour"

What is the meaning of this sentence.

Is it mean to say change in the company name or company product name.

i.e ESAB TO ESAB or

its product OK TIGROD 16.30 TO OK TIGROD 16.10.

Can we make WPS of 316L with supporting PQR 304L if the above clause is essential variable as per project spec.

Appreciate to have views on above point ASAP

Sunday, August 27, 2017

Re: [MW:26763] CALRIFICATION FOR THE DEFECT

Dear Patel,

Above punch mark Intrusions of foreign material during rollings and below punch mark lamination

Regards,

Kishor

On Sun, Aug 27, 2017 at 6:38 AM, Patel Vivek <vivekpatel1303@gmail.com> wrote:

It's cold lap ...which is common defect during forging.....

On 26-Aug-2017 6:25 PM, "Shanmugam" <nss2410@gmail.com> wrote:
Dear Friends,
Can you identity the type of defect which was found in one of the material in our project during blasting.

With Regards,
N.Shanmugam

--
https://materials-welding.blogspot.com/
https://www.linkedin.com/groups/122787
---
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com.
Visit this group at https://groups.google.com/group/materials-welding.
For more options, visit https://groups.google.com/d/optout.

--
https://materials-welding.blogspot.com/
https://www.linkedin.com/groups/122787
---
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com.
Visit this group at https://groups.google.com/group/materials-welding.
For more options, visit https://groups.google.com/d/optout.

Re: [MW:26762] CALRIFICATION FOR THE DEFECT

It's cold lap ...which is common defect during forging.....

On 26-Aug-2017 6:25 PM, "Shanmugam" <nss2410@gmail.com> wrote:

Dear Friends,
Can you identity the type of defect which was found in one of the material in our project during blasting.

With Regards,
N.Shanmugam

--
https://materials-welding.blogspot.com/
https://www.linkedin.com/groups/122787
---
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com.
Visit this group at https://groups.google.com/group/materials-welding.
For more options, visit https://groups.google.com/d/optout.

Re: [MW:26761] CALRIFICATION FOR THE DEFECT

Depth of pittings, laminations, Intrusions of foreign material during rollings.

Thanking You,

With Regards..
Dinesh V Somwanshi
Api 570, Cswip 3.1,Bgas 2
Authorised Certified Piping, Welding, Painting Inspector.
00919881344135

On Aug 27, 2017 11:35 AM, "PREM SHANKARDUTT NAUTIYAL" <prem_nautiyal@rediffmail.com> wrote:

Carry out NDT : PT or MT
To confirm the defect.

Regards

Prem Nautiyal

PREM S NAUTIYAL
CELL : 9769316004

From: Shanmugam <nss2410@gmail.com>
Sent: Sat, 26 Aug 2017 18:25:08 GMT+0530
To: materials-welding@googlegroups.com
Subject: [MW:26757] CALRIFICATION FOR THE DEFECT

Dear Friends,
Can you identity the type of defect which was found in one of the material in our project during blasting.

With Regards,
N.Shanmugam

--
https://materials-welding.blogspot.com/
https://www.linkedin.com/groups/122787
---
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com.
Visit this group at https:roups.google.com/group/materials-welding.
For more options, visit https://groups.google.com/d/optout.

--
https://materials-welding.blogspot.com/
https://www.linkedin.com/groups/122787
---
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com.
Visit this group at https://groups.google.com/group/materials-welding.
For more options, visit https://groups.google.com/d/optout.

Re: [MW:26758] CALRIFICATION FOR THE DEFECT

Lamination

Sent from my iPhone

On Aug 26, 2017, at 2:53 PM, Shanmugam <nss2410@gmail.com> wrote:

Dear Friends,
Can you identity the type of defect which was found in one of the material in our project during blasting.

With Regards,
N.Shanmugam

--
https://materials-welding.blogspot.com/
https://www.linkedin.com/groups/122787
---
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com.
Visit this group at https://groups.google.com/group/materials-welding.
For more options, visit https://groups.google.com/d/optout.

<IMG20170820141340.jpg>

Materials & Welding

Thursday, August 31, 2017

Re: [MW:26780] Regarding brand name of welding consumable.

[MW:26777] Hardness unit

Re: [MW:26777] Regarding brand name of welding consumable.

Re: [MW:26777] VALIDATION OF THE WELDING PROCESS FOR THE HARD FACING AND SEAT RING OF THE GATE VALVES

Re: [MW:26776] VALIDATION OF THE WELDING PROCESS FOR THE HARD FACING AND SEAT RING OF THE GATE VALVES

[MW:26775] VALIDATION OF THE WELDING PROCESS FOR THE HARD FACING AND SEAT RING OF THE GATE VALVES

Wednesday, August 30, 2017

Re: [MW:26773] Pitting corrosion in Duplex material

Re: [MW:26774] Regarding brand name of welding consumable.

Re: [MW:26772] Regarding brand name of welding consumable.

Re: [MW:26771] Pitting corrosion in Duplex material

Re: [MW:26770] Pitting corrosion in Duplex material

Re: [MW:26769] Pitting corrosion in Duplex material

Re: [MW:26768] Pitting corrosion in Duplex material

Re: [MW:26766] Pitting corrosion in Duplex material

Re: [MW:26767] Pitting corrosion in Duplex material

[MW:26765] Pitting corrosion in Duplex material

[MW:26764] Regarding brand name of welding consumable.

Sunday, August 27, 2017

Re: [MW:26763] CALRIFICATION FOR THE DEFECT

Re: [MW:26762] CALRIFICATION FOR THE DEFECT

Re: [MW:26761] CALRIFICATION FOR THE DEFECT

Re: [MW:26758] CALRIFICATION FOR THE DEFECT

[MW:34866] Presentation for WPS ,PQR AND WPQ as per ASME Sec IX in power point

Search This Blog

Wikipedia

Followers