中国老人网

中国老人网Materials selection, welding, forming, Heat treatment, corrossion, NDT

中国老人网

Wednesday, June 24, 2020

Re: [MW:31030] What is the difference between Non-Asbestos Gasket and Asbestos Gasket?

I agree with Pandithan Sir, as Asbestos is considered Carcinogenic and banned in most countries

中国老人网



On Wednesday, June 24, 2020, 03:16:32 PM GMT+7, Kannayeram Gnanapandithan <kgpandithan@gmail.com> wrote:


It is banned now adays

On Wed, 24 Jun 2020 12:10 pm Peter Soloman, <petervsoloman@gmail.com> wrote:
Asbestos Gasket normally used for a temporary purpose for cost control
ex::-during pressure test, dummy spool etc....
Non-Asbestos Gasket  used for permanent flanges 
ex:- Torued flanges , after pressure, tested lines before bolt touring.
Regards,
PETER SOLOMAN
BAHRAIN

On Wed, Jun 24, 2020 at 6:17 AM Raafat <slag2010@gmail.com> wrote:
Hello Dears,
What is the difference between Non-Asbestos Gasket and Asbestos Gasket? and for what application we can use each?

Thanks,

--
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.
To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/74f78f6b-75fe-49f2-a36d-7ac25b9b7954o%40googlegroups.com.

--
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.
To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/CAMvP5swRhzUM0rQKD4kAo%3D16fmShrDBHdvTcbijeb%3D4RgLpF%3Dg%40mail.gmail.com.

--
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.
To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/CAJzm4ePzZ9gPk%3Dd6EkDFY8NG-vLV_%3DWmn0C%2BbfP7Phkm1MbALw%40mail.gmail.com.

Re: [MW:31029] What is the difference between Non-Asbestos Gasket and Asbestos Gasket?

It is banned now adays

On Wed, 24 Jun 2020 12:10 pm Peter Soloman, <petervsoloman@gmail.com> wrote:
Asbestos Gasket normally used for a temporary purpose for cost control
ex::-during pressure test, dummy spool etc....
Non-Asbestos Gasket  used for permanent flanges 
ex:- Torued flanges , after pressure, tested lines before bolt touring.
Regards,
PETER SOLOMAN
BAHRAIN

On Wed, Jun 24, 2020 at 6:17 AM Raafat <slag2010@gmail.com> wrote:
Hello Dears,
What is the difference between Non-Asbestos Gasket and Asbestos Gasket? and for what application we can use each?

Thanks,

--
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.
To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/74f78f6b-75fe-49f2-a36d-7ac25b9b7954o%40googlegroups.com.

--
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.
To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/CAMvP5swRhzUM0rQKD4kAo%3D16fmShrDBHdvTcbijeb%3D4RgLpF%3Dg%40mail.gmail.com.

--
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.
To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/CAJzm4ePzZ9gPk%3Dd6EkDFY8NG-vLV_%3DWmn0C%2BbfP7Phkm1MbALw%40mail.gmail.com.

Re: [MW:31028] PQR shall be tested in Min & Max PWHT (3 Cycle minimum simulation) condition.

Dear Vijay,

The above query is related to me also, can you please explain in detail.

And I have qualified PQR, please refer to I have included the two different  PQR range. 

Material Both PQR  ASTM A106 Gr B

Thickness Range - 5 mm to 25 mm

First PQR Range - 

POST WELD HEAT TREATMENT( QW-407)
TEMPERATURE RANGE630 ±10° C
SOAKING PERIOD190Min
HEATING RATE190°C/Hours Max
COOLING RATE190°C/Hours Max

Second PQR Range - 

  TEMPERATURE RANGE TP1 - 638 ±10° C  TP2 - 635 ±10° C
 SOAKING PERIOD:  TP1 - 72 min  TP2 - 189 min 
 HEATING RATE:  TP1 -170°C/Hours and TP2-171°C
 COOLING RATE:  TP1- 163°C/Hours and TP2-106°C/h

But it is not clear to me how to confirm if mechanical properties are ok after just one PWHT ( for sure Tensile St. and Y. S. will be ok, since values are greater, but hardness test?

Please explain to me about the mechanical test and  3 cycles PWHT. Where I require test coupons for first PQR.

Thanks and Regards
Kiran



On Tue, Dec 17, 2019 at 8:54 AM Vijay Katkar <katkar.vijay22@gmail.com> wrote:
Hi Kunal,

3 simulation cycle is required with considering future service repair.

You need to prove that after considering 3 simulation PWHT cycle the minimum tensile requirement can be achievable . But you need to check the base metal also, 

Is the base metal tested/qualified with 3 simulation cycle?

Thank you 

Vijay Katkar 


On Mon, 16 Dec 2019, 1:56 pm , <kunalenfield350@gmail.com> wrote:
Dear Sir's

Client has specified the requirement for testing the PQR in Min & Max PWHT (3 Cycle simulation) condition. As we had pre-qualified PQR with one cycle of 2 Hours soaking. So please suggest how to comply with the requirement & what does this "3 cycle simulation" exactly means?


Regards
Kunal Srivastava

--
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.
To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/3a501189-a776-4557-a36c-bfdc41b280bb%40googlegroups.com.

--
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.
To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/CAP37wrLbwQ7quZ%2B065SH91POWJFLLCA9gTaFKBT-2ikjX9HzMw%40mail.gmail.com.


--

KIRAN

--
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.
To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/CAMFjUk77HDdane_hEbcY96b%2BoO8BN9AQtDUvPBh2KGaKyae3Ug%40mail.gmail.com.

Re: [MW:31024] 3 Cycle PWHT requirements acc.to ASME

Thanks for your support.


Regarding PWHT of 3 cycles.

Below I have mentioned my PQR ranges for PWHT.

POST WELD HEAT TREATMENT( QW-407)
TEMPERATURE RANGE630 ±10° C
SOAKING PERIOD190Min
HEATING RATE190°C/Hours Max
COOLING RATE190°C/Hours Max.
As per the above range, it's qualified 3 cycles, but how? and for 3 Cycles PWHT where I required test coupons? how many coupons tests shall I have conduct?
Please clarify my above query in detail with code.

Thanks once again.

Kiran


On Tuesday, June 23, 2020 at 11:43:19 AM UTC+5:30, petervsoloman wrote:
Dear Kiran,
Once PWHT competed for joints due to modification cut/reweld or repair re PWHT required that particular joints.
it is mention in the procedure is enough to do the job. This you can mention in your weld repair procedure.
Regards,
PETER SOLOMAN
+971 33663119

On Mon, Jun 22, 2020 at 7:32 AM K K <kara...@gmail.com> wrote:
Dear All,

Please describe to me regarding 3 cycle PWHT requirements as per ASME.

If my PQR tested with two coupons where I required one more test coupon and additional one more for repair.

Please explain to me in detail and related to mechanical testing for PWHT.

What is the meaning of this paragraph - **an additional one PWHT cycle shall be incorporated to simulate field repair or modification.**

Thanks and Regards
Kiran

--
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 material...@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/2b255cdf-b673-4981-8fcf-ad1fb4863ecbo%40googlegroups.com.

--
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.
To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/66851acd-b858-47d4-9858-4231b68fa30ao%40googlegroups.com.

Re: [MW:31024] Qualification

Depending on process because Fno is essential. 

On Wed, 24 Jun 2020 8:47 am Jayadeep C, <jayadeepmechanical@gmail.com> wrote:
If one welder qualified in CS, possible to weld SS and Low alloy


--
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.
To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/39ea0722-5eda-4e38-8f5f-873032810eb4n%40googlegroups.com.

--
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.
To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/CAJzm4eOWf%3DhzoZiaczqdsprZvXsSnS6qia4e8tZgGnQX9tjvPw%40mail.gmail.com.

Re: [MW:31024] What is the difference between Non-Asbestos Gasket and Asbestos Gasket?

Asbestos is not being used due to some issues for human health

On Wed, 24 Jun 2020 8:47 am Raafat, <slag2010@gmail.com> wrote:
Hello Dears,
What is the difference between Non-Asbestos Gasket and Asbestos Gasket? and for what application we can use each?

Thanks,

--
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.
To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/74f78f6b-75fe-49f2-a36d-7ac25b9b7954o%40googlegroups.com.

--
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.
To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/CAJzm4ePWwQzbG9jaUx3J2nskfSxLuEC0LTMJL_wgRjoaiuiqdg%40mail.gmail.com.

Re: [MW:31024] What is the difference between Non-Asbestos Gasket and Asbestos Gasket?

Asbestos Gasket normally used for a temporary purpose for cost control
ex::-during pressure test, dummy spool etc....
Non-Asbestos Gasket  used for permanent flanges 
ex:- Torued flanges , after pressure, tested lines before bolt touring.
Regards,
PETER SOLOMAN
BAHRAIN

On Wed, Jun 24, 2020 at 6:17 AM Raafat <slag2010@gmail.com> wrote:
Hello Dears,
What is the difference between Non-Asbestos Gasket and Asbestos Gasket? and for what application we can use each?

Thanks,

--
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.
To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/74f78f6b-75fe-49f2-a36d-7ac25b9b7954o%40googlegroups.com.

--
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.
To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/CAMvP5swRhzUM0rQKD4kAo%3D16fmShrDBHdvTcbijeb%3D4RgLpF%3Dg%40mail.gmail.com.

Re: [MW:31023] Qualification

Hi,
Regarding Base material qualification is OK (But please refer QW 423.1)
For Filler metal,position etc., please refer ASME Sec.IX-QW 350,351, Table QW-352 to 357 for essential variables for welder qualification and QW-360 to QW-363 for Welding Operator Qualifications.
Thanks& Regards,

 

(Karthik)

Karthikeyan.S

M: +66-892512282
E-mail : karthik6684@yahoo.com



On Wednesday, June 24, 2020, 10:17:15 AM GMT+7, Jayadeep C <jayadeepmechanical@gmail.com> wrote:


If one welder qualified in CS, possible to weld SS and Low alloy


--
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.
To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/39ea0722-5eda-4e38-8f5f-873032810eb4n%40googlegroups.com.

--
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.
To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/1301932360.1991658.1592969030360%40mail.yahoo.com.

Tuesday, June 23, 2020

[MW:31021] What is the difference between Non-Asbestos Gasket and Asbestos Gasket?

Hello Dears,
What is the difference between Non-Asbestos Gasket and Asbestos Gasket? and for what application we can use each?

Thanks,

--
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.
To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/74f78f6b-75fe-49f2-a36d-7ac25b9b7954o%40googlegroups.com.

[MW:31021] Qualification

If one welder qualified in CS, possible to weld SS and Low alloy


--
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.
To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/39ea0722-5eda-4e38-8f5f-873032810eb4n%40googlegroups.com.

Re: [MW:31030] What is the difference between Non-Asbestos Gasket and Asbestos Gasket?

I agree with Pandithan Sir, as Asbestos is considered Carcinogenic and banned in most countries ...