Sunday, September 30, 2012

Re: [MW:15433] Aluminium Bronze welding

No doubt Helium+Argon mixture will give better fusion and penetration, but i have welded lot of Al-Br with Pure argon.
Hel+Ar mixture is a costly affair.
Also preheat is must.
 
Regards
 
Prem Nautiyal


--- On Sun, 9/30/12, kannayeram gnanapandithan <kgpandithan@gmail.com> wrote:

From: kannayeram gnanapandithan <kgpandithan@gmail.com>
Subject: Re: [MW:15374] Aluminium Bronze welding
To: materials-welding@googlegroups.com
Cc: prem_nautiyal26@yahoo.com
Date: Sunday, September 30, 2012, 1:13 PM

use helium+argon mixture
need not preheat
clean properly
pandithan
In-charge/wt
Cethar

On 9/24/12, bo gyi <aungbomyint@gmail.com> wrote:
> Hi
>
> Base material is B171 C61400 & 99.9995% argon is used.
>
> Regards,
>
> On Friday, September 21, 2012 10:01:11 PM UTC+8, prem nautiyal wrote:
>>
>>
>> Hi
>>
>> Its not an easy task to weld Al bronze.
>> What is your base material grade ?
>> Clean base metal and filler wire before welding.
>> Use 99.995% pure argon.
>> •Preheat 150 – 180 ˚C
>> •Inter pass temperature @200 ˚C.
>> •Inter run cleaning is very important to remove surface oxides
>>
>> Regards
>>
>> Prem Nautiyal
>> Cell: 9769316004
>>
>> --- On *Fri, 9/21/12, bo gyi <aungb...@gmail.com <javascript:>>* wrote:
>>
>>
>> From: bo gyi <aungb...@gmail.com <javascript:>>
>> Subject: [MW:15353] Aluminium Bronze welding
>> To: material...@googlegroups.com <javascript:>
>> Date: Friday, September 21, 2012, 7:46 AM
>>
>> Hi Sirs,
>>
>> Currently, I am doing procedure for Aluminium Bronze (61400) using GTAW (
>>
>> ERCuAl-A2) process by Argon shielding gas but found that fusion of filler
>>
>> metal & base metal is not nice.
>>
>> Can anyone advice?
>>
>> Thanks and regards,
>>
>> Bo
>> --
>> To post to this group, send email to
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>>
>> The views expressed/exchnaged in this group are members personel views and
>>
>> meant for educational purposes only, Users must take their own decisions
>> w.r.t. applicable code/standard/contract documents.
>>
>>
>>
>>
>
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>
>
>

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[MW:15432] Radiography as per UW-11

Dear all
 
 My design thickness of vessels shell with Spot Radiography(E=0.85) is below the 32 mm but my client requirement is above 32mm (Process requirement)
its mandatory that vessel shall be full radiography as per UW-11(a) or not ?
 

Regards
Yogesh Patel

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Fwd: Fwd: [MW:15431] Tollerence for Painting DFT

-
Dear Experts;

with reference to the subject referred above please let me advise with documentary evidence about tolerances for Painted items when DFT is specified. Why paining fail in cross cut/peel-off test(Pl. ref photograph attached)? How to control the same?

Requested to advise

Regards
RK Vichare

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Re: [MW:15430] Aluminium Bronze welding

use helium+argon mixture
need not preheat
clean properly
pandithan
In-charge/wt
Cethar

On 9/24/12, bo gyi <aungbomyint@gmail.com> wrote:
> Hi
>
> Base material is B171 C61400 & 99.9995% argon is used.
>
> Regards,
>
> On Friday, September 21, 2012 10:01:11 PM UTC+8, prem nautiyal wrote:
>>
>>
>> Hi
>>
>> Its not an easy task to weld Al bronze.
>> What is your base material grade ?
>> Clean base metal and filler wire before welding.
>> Use 99.995% pure argon.
>> •Preheat 150 – 180 ˚C
>> •Inter pass temperature @200 ˚C.
>> •Inter run cleaning is very important to remove surface oxides
>>
>> Regards
>>
>> Prem Nautiyal
>> Cell: 9769316004
>>
>> --- On *Fri, 9/21/12, bo gyi <aungb...@gmail.com <javascript:>>* wrote:
>>
>>
>> From: bo gyi <aungb...@gmail.com <javascript:>>
>> Subject: [MW:15353] Aluminium Bronze welding
>> To: material...@googlegroups.com <javascript:>
>> Date: Friday, September 21, 2012, 7:46 AM
>>
>> Hi Sirs,
>>
>> Currently, I am doing procedure for Aluminium Bronze (61400) using GTAW (
>>
>> ERCuAl-A2) process by Argon shielding gas but found that fusion of filler
>>
>> metal & base metal is not nice.
>>
>> Can anyone advice?
>>
>> Thanks and regards,
>>
>> Bo
>> --
>> To post to this group, send email to
>> material...@googlegroups.com<javascript:>
>> To unsubscribe from this group, send email to
>> materials-weld...@googlegroups.com <javascript:>
>> For more options, visit this group's bolg at
>> http://materials-welding.blogspot.com/
>>
>> http://www.linkedin.com/groups/MaterialsWelding-122787?home=&gid=122787&trk=anet_ug_hm
>>
>> The views expressed/exchnaged in this group are members personel views and
>>
>> meant for educational purposes only, Users must take their own decisions
>> w.r.t. applicable code/standard/contract documents.
>>
>>
>>
>>
>
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>
>
>

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Saturday, September 29, 2012

[MW:15429] Reg Verticality

Dear All Experts
 
We are manufacturing flue gas duct piping for boiler chimni of 4* 360 MW, I have that confusion in one point that how to check the verticality of shell(of Dia 5m & one shell containng two segment of 2.5m height i.e. one shell of 5m height), now pls clarify that is it right to check the verticality of the shell at fabrication stage(of 5m height shell) bcoz we have no flat ground available to check verticality or On the other hand if the total height of flue gas duct piping is 275m then we can check the verticality of shell at erection stage bcoz at erection stage we will have flat ground.
 
Pls clarify
 
WIth regards
 
Ashwani

Re: [MW:15428] ALIGNMENT OF LINE

Dear one, As per my knowledge allignment tolerance generally(or
specified by client) 1mm/meter length of the line. For eg. If one job
is 8meter in length then allignment upto 8mm is acceptable.
Regards-krishna M.

On 9/29/12, vikas waghmare <vikas.waghmare08@gmail.com> wrote:
> Dear Friend,
>
> Refer A530 clause 14, general requirement of CS pipe and alloy steel
> pipe .It says that the seamless pipe should be reasonably straight and
> give tolerance for welded pipe.
> Secondly Asme B31.3 says that for angular misalignment above 3degree
> design consideration changes .
> We have to consider both above point ,and this is one of the reason
> that code doesnt specify for alignment issue thinking that if pipe is
> manufactured as per the above standards and angular misalignment is
> within the limit there will be no issue for alignment .
> I consider above points while doing inspection.
>
>
> Vikas Waghmare
> Bureau Veritas Abudhabi
>
> On 9/26/12, Ammar Shaikh <ammar.ali.shaikh@gmail.com> wrote:
>> This is purely under juriscation of Client specifications.
>> It is usually the asthetics that influences the tolerences but in some
>> cases it is need of application too like in one of my jobs I had to
>> allign
>> within *+* 0.5 which is very rear in normal applications.
>>
>> Ammar
>>
>> On Wed, Sep 26, 2012 at 12:36 AM, Dr-alaa Zg <dralaazg@yahoo.com> wrote:
>>
>>> Dear Sampath
>>>
>>> Tolerances of pipe lines are generally given in the contract documents
>>> or
>>> in PFI standards ES02 and ES03.
>>>
>>> Best of regards
>>>
>>> Dr. Eng. Alaa A. Atiyah
>>> Technical Manager
>>> Delta Integra Group
>>>
>>> --- On *Tue, 9/25/12, Sampath Kumar <skthatham@gmail.com>* wrote:
>>>
>>>
>>> From: Sampath Kumar <skthatham@gmail.com>
>>> Subject: [MW:15388] ALIGNMENT OF LINE
>>> To: materials-welding@googlegroups.com
>>> Date: Tuesday, September 25, 2012, 2:50 AM
>>>
>>>
>>> Hello Everybody,
>>>
>>> can anybody give some facts related to the tolerance/allowance limit
>>> with
>>> regards to "ALIGNMENT OF LINE",both Horizontal & vertical of any given
>>> size
>>> with some code and standarad referrence.
>>>
>>> Thanks & Regards
>>>
>>> sampath
>>>
>>>
>>> --
>>> To post to this group, send email to materials-welding@googlegroups.com
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>>>
>>> http://www.linkedin.com/groups/MaterialsWelding-122787?home=&gid=122787&trk=anet_ug_hm
>>>
>>> The views expressed/exchnaged in this group are members personel views
>>> and
>>> meant for educational purposes only, Users must take their own decisions
>>> w.r.t. applicable code/standard/contract documents.
>>>
>>>
>>>
>>> --
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>>>
>>> The views expressed/exchnaged in this group are members personel views
>>> and
>>> meant for educational purposes only, Users must take their own decisions
>>> w.r.t. applicable code/standard/contract documents.
>>>
>>>
>>>
>>
>> --
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>> and
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>>
>>
>>
>
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>
>
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RE: [MW:15426] CAN WE USE IS 1367 GR. 10.9 INSTEAD OF A 193 GR. B7

yes, get approval from purchaser


Thank & Best Regards,

 

M Veera SAMY- Bureau Veritas.

Coimbatore

 

 


 

From: hsuthar@chemithon.co.in
To: materials-welding@googlegroups.com
Subject: [MW:15425] CAN WE USE IS 1367 GR. 10.9 INSTEAD OF A 193 GR. B7
Date: Sat, 29 Sep 2012 14:04:20 +0530

Dear pls reply me can we use bolt for IS 1367 GR. 10.9 INSTEAD OF A 193 GR. B7.

Pls reply with reason

 

HEMANT SUTHAR

QA/QC

CEPL-SILVASSA

9712973092

 


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Re: [MW:15426] ALIGNMENT OF LINE

Dear Friend,

Refer A530 clause 14, general requirement of CS pipe and alloy steel
pipe .It says that the seamless pipe should be reasonably straight and
give tolerance for welded pipe.
Secondly Asme B31.3 says that for angular misalignment above 3degree
design consideration changes .
We have to consider both above point ,and this is one of the reason
that code doesnt specify for alignment issue thinking that if pipe is
manufactured as per the above standards and angular misalignment is
within the limit there will be no issue for alignment .
I consider above points while doing inspection.


Vikas Waghmare
Bureau Veritas Abudhabi

On 9/26/12, Ammar Shaikh <ammar.ali.shaikh@gmail.com> wrote:
> This is purely under juriscation of Client specifications.
> It is usually the asthetics that influences the tolerences but in some
> cases it is need of application too like in one of my jobs I had to allign
> within *+* 0.5 which is very rear in normal applications.
>
> Ammar
>
> On Wed, Sep 26, 2012 at 12:36 AM, Dr-alaa Zg <dralaazg@yahoo.com> wrote:
>
>> Dear Sampath
>>
>> Tolerances of pipe lines are generally given in the contract documents or
>> in PFI standards ES02 and ES03.
>>
>> Best of regards
>>
>> Dr. Eng. Alaa A. Atiyah
>> Technical Manager
>> Delta Integra Group
>>
>> --- On *Tue, 9/25/12, Sampath Kumar <skthatham@gmail.com>* wrote:
>>
>>
>> From: Sampath Kumar <skthatham@gmail.com>
>> Subject: [MW:15388] ALIGNMENT OF LINE
>> To: materials-welding@googlegroups.com
>> Date: Tuesday, September 25, 2012, 2:50 AM
>>
>>
>> Hello Everybody,
>>
>> can anybody give some facts related to the tolerance/allowance limit with
>> regards to "ALIGNMENT OF LINE",both Horizontal & vertical of any given
>> size
>> with some code and standarad referrence.
>>
>> Thanks & Regards
>>
>> sampath
>>
>>
>> --
>> To post to this group, send email to materials-welding@googlegroups.com
>> To unsubscribe from this group, send email to
>> materials-welding+unsubscribe@googlegroups.com
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>>
>> http://www.linkedin.com/groups/MaterialsWelding-122787?home=&gid=122787&trk=anet_ug_hm
>>
>> The views expressed/exchnaged in this group are members personel views
>> and
>> meant for educational purposes only, Users must take their own decisions
>> w.r.t. applicable code/standard/contract documents.
>>
>>
>>
>> --
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>>
>> The views expressed/exchnaged in this group are members personel views
>> and
>> meant for educational purposes only, Users must take their own decisions
>> w.r.t. applicable code/standard/contract documents.
>>
>>
>>
>
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>
>
>

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[MW:15425] CAN WE USE IS 1367 GR. 10.9 INSTEAD OF A 193 GR. B7

Dear pls reply me can we use bolt for IS 1367 GR. 10.9 INSTEAD OF A 193 GR. B7.

Pls reply with reason

 

HEMANT SUTHAR

QA/QC

CEPL-SILVASSA

9712973092

 

Re: [MW:15424] PQR - E 6013 vs E7018 as per IS 7307 part I (1974)

Dear Muthu Bharthi,
 
It is required to qualified new PQR as per IS 7307 (APPROVAL TESTS FOR WELDING PROCEDURES - PART 1: FUSION WELDING FOR STEEL)
 
Para 4.1 A welding procedure test shall be required when any of the following changes are made to an approved welding procedure:
 
(f) - Any changes in type of electrode, filler material, flux or shielding gas.
 
 
While  IS 7310 - 1 - Title it self says that APPROVAL TESTS FOR WELDERS WORKING TO APPROVED WELDING PROCEDURES - PART 1: FUSION WELDING OF STEEL , hence it is not applicable for WPS/PQR qualification.
 
Regds/Jignesh
 
 
On Fri, Sep 28, 2012 at 10:17 AM, muthu barathi <muthu_barathi@rediffmail.com> wrote:
Dear Sir,

Hi Friends please help me to clear the doubt

I have PQR qualification for 8mm thickness Fillet welding by using E6013 electrode. as per IS 7307 - Part I (1974).

Base material IS 2062 Grade B

Is it necessary to qualify 8mm thick by using E7018 electrode?
4. Changes affecting approval
4.1 A welding procedure test shall be required when any of the following changes are made to an approved welding procedure:

4.1.f ) Any change in type of electrode, filler material, flux or shielding gas.

As per IS 7310 Part I (1974)

5. Extent of approval
5.1 General - The extent of approval for a welding procedure. When a change in the welding procedure according to $ of IS 7307 (part I) - 1974 require a new welding procedure test, this shall entail re-approval of the welder except in the following cases :
c) A change from a basic to a rutile covered electrode.

Please help for a clear answer.

Thanking you for you valuable time you are going to give me in this case.

Dear Sir,


Thanking You.

With Warm Regards,

Muthu barathi P,
Mobile No. 9099006785

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Re: [MW:15423] electrode change without requalification

yes. you can!
E7018-1 is better than E7018 in Low temperature Impact Value.
 
 
Roy
 
Sent: Friday, September 28, 2012 3:41 PM
Subject: [MW:15415] electrode change without requalification
 
Dear friends,
 
is it possible to change an E7018-1 electrode to E7018 in a WPS without requalification.
Charpy V notch test value is applicable in this case.
Code is AWSD1.1.
I found in table 4.6 in AWSD1.1 as changing of  electrode  is possible with the same SFA number and F number and A number.
Please advice..........
--
Thank you,
 
Sandeep.k.p
Dubai,UAE
Mob:- +971 557405828
 
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Friday, September 28, 2012

[MW:15420] RE: 15417] HARDNESS and Macro location

ASME has no requirement for hardness and limited for macro testing.  For work to ASME the requirement for these tests generally would be from your customer specifications or contract and as such the direction should come from them.  Without direction from your customer, you could have your laboratory follow either the recommendations for hardness testing in either API RP582, Welding Guidelines for the Chemical, Oil, and Gas Industries, or BS EN 1043-2, Destructive tests on welds in metallic materials – Hardness Test, Part 2. Micro hardness testing on welded joints.  While not the same, the methodologies for indent location are similar.

 

Macro testing typically will involve an evaluation of the entire weld and HAZ after polishing and etching.  If performed I would recommend that the a photo of the entire weld be taken at a suitable magnification for archival documentation.  ASME IX only has discussion on macro evaluation of fillet welds, QW-183, and tube-to-tubesheet mockup welds, QW-193.1.3. 

 

For macroscopic examination, EN ISO 15614-1:2004, §7.4.4 States the following:

“The test specimen shall be prepared and etched in accordance with EN 1321 on one side to clearly reveal the fusion line, the HAZ, and the build up of the runs.  The macroscopic examination shall include unaffected parent metal and shall be recorded by at least one macro-reproduction per procedure test.  The acceptance levels shall be in accordance with 7.5.”

 

Your laboratory should have one of these and be able to perform accordingly.

 

John A. Henning

Welding & Materials

 

From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Sasi
Sent: Friday, September 28, 2012 4:52 AM
To: materials-welding@googlegroups.com
Subject: [MW:15417] HARDNESS and Macro location

 

Dear sirs

 

I already done Procedure Qualification Test as per ASME Sec IX and sent it for mechanical and Destructive testing. The LAB people they are saying to detemine the location of Hardness testing and Macro testing. How I can reply to them. Please advise me . Quick reply , it will be very useful to me.

 

 

Thanks and Regards

Sasikumar.R

 

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[MW:15422] Re: E: 15417] HARDNESS and Macro location

Macro, micro, harness tests are required if done as per iso 15614 etc. You can check them where facilities are available as all are not eqipped for it. Sridhar

----------
Sent via Nokia Email

------Original message------
From: Vinod Kataria <vinod.kataria@blissanand.com>
To: <materials-welding@googlegroups.com>
Date: Friday, September 28, 2012 3:34:49 PM GMT+0530
Subject: [MW:15418] RE: 15417] HARDNESS and Macro location

Dear Sasi,

You can ask the lab to do hardness testing on weld metal, HAZ and parent
Metal, the location shall be weld top, weld middle and weld bottom same with
HAZ.



With kind regards,

Vinod Kataria

General Manager

Bliss Anand Private Limited,

92B/93B Sector 5

IMT Manesar,Gurgaon,

National Capital Region Delhi.

India .

Phone : +91-124-4366000 (9 Lines)

Mobile Phone : +91-9560199004

Fax : +91-124-2290884



From: materials-welding@googlegroups.com
[mailto:materials-welding@googlegroups.com] On Behalf Of Sasi
Sent: Friday, September 28, 2012 3:22 PM
To: materials-welding@googlegroups.com
Subject: [MW:15417] HARDNESS and Macro location



Dear sirs



I already done Procedure Qualification Test as per ASME Sec IX and sent it
for mechanical and Destructive testing. The LAB people they are saying to
detemine the location of Hardness testing and Macro testing. How I can reply
to them. Please advise me . Quick reply , it will be very useful to me.





Thanks and Regards

Sasikumar.R



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Re: [MW:15421] Procedue for repairing cracks in base mental

Drilling at both ends is required only for reparing of casting to avoid further propogation of cracks. Grinding or arc gouging is just sufficient for all other metals. Sridhar

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Sent via Nokia Email

------Original message------
From: mukesh.chaudhari <mukesh.chaudhari@orientalindia.net>
To: <materials-welding@googlegroups.com>
Date: Friday, September 28, 2012 2:33:41 PM GMT+0530
Subject: [MW:15415] Procedue for repairing cracks in base mental

Dear expert,

Is it required to do drilling at both the end of crack which is identified
in parent mental?



Regards,

Mukesh chaudhari

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Re: [MW:15419] Procedue for repairing cracks in base mental

Cracks are said to be sharp in the end and more stress concentration is supposed to be in the weld ends -This concentrated stress is the basic reason for further development of the crack in the longitudinal direction. 

In some cases if the crack is allowed and with in the limit - to avoid further development of cracks small drilling carried  out on the tip of the crack

After drilling as there is no sharp edge of the crack - no more stress concentrations at the crack and chances of further cracking is avoided. Hope this technology can be used in the structural code. More details can be seen in AWS welding guide 

These drills are called as self ending drills. 

Even in some old car front wind shield glass we can see such small drills at the end of cracks- to avoid further development of the cracks. 

WISH TO KNOW MORE ON THIS PL - MORE AND BETTER COMMENTS REQUESTED.

On Fri, Sep 28, 2012 at 1:03 PM, mukesh.chaudhari <mukesh.chaudhari@orientalindia.net> wrote:

Dear expert,

Is it required to do drilling at both the end of crack which is identified in parent mental?

 

Regards,

Mukesh chaudhari

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Welding,Painting,NDT & ISO 9001/2008
 
take all steps to save our health  wealth & environment.

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[MW:15418] RE: 15417] HARDNESS and Macro location

Dear Sasi,

You can ask the lab to do hardness testing on weld metal, HAZ and parent Metal, the location shall be weld top, weld middle and weld bottom same with HAZ.

 

With kind regards,

Vinod Kataria

General Manager

Bliss Anand Private Limited,

92B/93B Sector 5

IMT Manesar,Gurgaon,

National Capital Region Delhi.

India .

Phone : +91-124-4366000 (9 Lines)

Mobile Phone : +91-9560199004

Fax : +91-124-2290884

 

From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Sasi
Sent: Friday, September 28, 2012 3:22 PM
To: materials-welding@googlegroups.com
Subject: [MW:15417] HARDNESS and Macro location

 

Dear sirs

 

I already done Procedure Qualification Test as per ASME Sec IX and sent it for mechanical and Destructive testing. The LAB people they are saying to detemine the location of Hardness testing and Macro testing. How I can reply to them. Please advise me . Quick reply , it will be very useful to me.

 

 

Thanks and Regards

Sasikumar.R

 

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The recipient acknowledges that Punj Lloyd Limited or its subsidiaries and associated companies (collectively "Punj Lloyd Group") are unable to exercise control or ensure or guarantee the integrity of/over the contents of the information contained in e-mail transmissions and further acknowledges that any view, opinion or advice expressed in this message are those of the individual sender and no binding nature of the message shall be implied or assumed unless the sender does so expressly with due authority of Punj Lloyd  Group.

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[MW:15417] HARDNESS and Macro location

Dear sirs
 
I already done Procedure Qualification Test as per ASME Sec IX and sent it for mechanical and Destructive testing. The LAB people they are saying to detemine the location of Hardness testing and Macro testing. How I can reply to them. Please advise me . Quick reply , it will be very useful to me.
 
 
Thanks and Regards
Sasikumar.R

This e-mail and any files transmitted with it are for the sole use of the intended recipient(s) and may contain confidential and privileged information. If you are not the intended recipient of this communication, we request you to notify the sender immediately by return email and destroy all copies and the original message. Any unauthorized review, use, disclosure, dissemination, forwarding, printing or copying of this email is strictly prohibited.
The recipient acknowledges that Punj Lloyd Limited or its subsidiaries and associated companies (collectively "Punj Lloyd Group") are unable to exercise control or ensure or guarantee the integrity of/over the contents of the information contained in e-mail transmissions and further acknowledges that any view, opinion or advice expressed in this message are those of the individual sender and no binding nature of the message shall be implied or assumed unless the sender does so expressly with due authority of Punj Lloyd  Group.
Although we have taken all reasonable precautions to ensure that this communication is free from viruses. We do not assume responsibility for any loss or damage arising from the use of this email.

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[MW:15415] Procedue for repairing cracks in base mental

Dear expert,

Is it required to do drilling at both the end of crack which is identified in parent mental?

 

Regards,

Mukesh chaudhari

[MW:15415] electrode change without requalification

Dear friends,

is it possible to change an E7018-1 electrode to E7018 in a WPS without requalification.
Charpy V notch test value is applicable in this case.
Code is AWSD1.1.
I found in table 4.6 in AWSD1.1 as changing of  electrode  is possible with the same SFA number and F number and A number.
Please advice..........
--
Thank you,
 
Sandeep.k.p
Dubai,UAE
Mob:- +971 557405828

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[MW:15414] welding of AISI 9310

Dear experts
I have to manufacture a welding electrode extruder head part for that  AISI 9310 material is recommended.
Element Content (%)
Ni 3.00-3.50
Cr 1.00-1.40
Mn 0.45-0.65
Si 0.15-0.30
P 0.025 (max)
S 0.025 (max)
Mo 0.08-0.15
C 0.08-0.13
the process sequence is, 1st it has to be machined then welded and after that heat treatment upto 60 HRC.
I want to know the welding process and filler. in service this part has to bear a high pressure of flux.
Kindly guide me about welding and right filler material for this part.

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Re: [MW:15413] Welding consumable for welding of CS to Cast Iron


MR RANENDRA ,



let me have the material specification details so that one can have the full
details
ex: like is 2062 gr a material to is 2062 gr a
is 2062 gr b to gr b

even the welding consumable will be specified on the type of the job

usually for low strength we use E6013. if it need to with stand more strength we
will be going for low hydrogen electrode like E7018 .

. if we use is 2062 gr a to is 2062 gr a material and if it need withstand good
strength then we need to go for E9018. as u may be aware that pre heating of
electrode and all .

i think after going through this u may be having a good idea if u need more u can
mail me


Regards,
srikkanth
On Wed, 26 Sep 2012 16:48:09 +0530 wrote
>Dear Experts,
Please guide which kind of consumable can be used for welding of CS with Cast
Iron.
 
Ranendra Chakraborty



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[MW:15412] PQR - E 6013 vs E7018 as per IS 7307 part I (1974)

Dear Sir,

Hi Friends please help me to clear the doubt

I have PQR qualification for 8mm thickness Fillet welding by using E6013 electrode. as per IS 7307 - Part I (1974).

Base material IS 2062 Grade B

Is it necessary to qualify 8mm thick by using E7018 electrode?
4. Changes affecting approval
4.1 A welding procedure test shall be required when any of the following changes are made to an approved welding procedure:

4.1.f ) Any change in type of electrode, filler material, flux or shielding gas.

As per IS 7310 Part I (1974)

5. Extent of approval
5.1 General - The extent of approval for a welding procedure. When a change in the welding procedure according to $ of IS 7307 (part I) - 1974 require a new welding procedure test, this shall entail re-approval of the welder except in the following cases :
c) A change from a basic to a rutile covered electrode.

Please help for a clear answer.

Thanking you for you valuable time you are going to give me in this case.

Dear Sir,





Thanking You.

With Warm Regards,

Muthu barathi P,
Mobile No. 9099006785

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Thursday, September 27, 2012

Re: [MW:15411] Tollerence for Painting DFT

Dear expert,

First off all you have to inspect the area visually, there are so many reasons for a chances to failure of  coating .
Only low DFT is not a basic reason .if on the surface spot failure found after application of coating , you have to verify the defected area . Near the defected area cross cut-test is mandatory as per standared .If large area coating 
is pill -off you should to do the pull - off test( As per specified std).

The reason of coating failure as given below.

1- Poor surface preparation 

2- surface contaminated due to presence of oil  and grease.

3-   chloride level  up to acceptable range.

4-Incorrect mixing of paint and re-coating  time interval not followed.

5 - curing reason



On Thu, Sep 27, 2012 at 4:10 PM, sevak hiren <hirensevak80@gmail.com> wrote:
Dear,

Standard: SSPC PA 2

5.2.1 Minimum Thickness: The average of the spot measurements for each 10 m2 (100 ft2) area shall not be less
than the specified minimum thickness. No single spot measurement in any 10 m2 (100 ft2) area shall be less than 80% of the
specified minimum thickness. Any gage reading may under-run by a greater amount. If the average of the spot measurements
for a given 10 m2 (100 ft2) area meets or exceeds the specified minimum thickness, but one or more spot measurements is less
than 80% of the specified minimum thickness, additional measurements may be made to define the non-conforming area.

5.2.2 Maximum Thickness: The average of the spot measurements for each 10 m2 (100 ft2) area shall not be more
than the specified maximum thickness. No single spot measurement in any 10 m2 (100 ft2) area shall be more than 120% of the
specified maximum thickness. Any gage reading may over-run by a greater amount. If the average of the spot measurements
for a given 10 m2 (100 ft2) area meets or falls below the specified maximum thickness , but one or more spot measurements is
more than 120% of the specified maximum thickness, additional measurements may be made to define the non-conforming
area. Manufacturers' literature may be consulted to determine if higher maximum thickness readings are allowable under
specific circumstances.

Also you can see ASTM D 1186

There may be no. of reasons for failure in test.

What was required DFT ?

What was the max DFT observed ?

What is the average DFT observed ?

For Proper Pull Off test refer ASTM D3359

Test Method A—An X-cut is made in the film to the substrate, pressure-sensitive tape is applied over the cut and
then removed, and adhesion is assessed qualitatively on the 0 to 5 scale.

Test Method B—A lattice pattern with either six or eleven cuts in each direction is made in the film to the
substrate, pressure-sensitive tape is applied over the lattice and then removed, and adhesion is evaluated by comparison with descriptions and illustrations.


Test Method A is primarily intended for use at job sites while Test Method B is more suitable for use in the laboratory.
Also, Test Method B is not considered suitable for films thicker than 5 mils (125μm).



On Wed, Sep 26, 2012 at 12:47 PM, Ramchandra vichare <vicharerke@indiatimes.com> wrote:
Dear Experts;

with reference to the subject referred above please let me advise with documentary evidence about tolerances for  Painted items when DFT is specified. Why paining fail in cross cut/peel-off test(Pl. ref photograph attached)? How to control the same?

Requested to advise

Regards
RK Vichare

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With kinds Regards

*********************

PRAVEZ ALAM

MATERIAL/PIPING INSPECTOR

SK E &C

Ruwais Refinery Expansion Project, 

P O Box : 11780, Ruwais,  Abudhabi.

United Arab Emirates.

Mob-+971509867435

E-mail-skec.cv4087@partner.sk.com

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"When I am working on a problem I never think about beauty. I only think about how to solve the problem. But when I have finished, if the solution is not beautiful, I know it is wrong."



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Re: [MW:15410] Tollerence for Painting DFT

Dear,

Standard: SSPC PA 2

5.2.1 Minimum Thickness: The average of the spot measurements for each 10 m2 (100 ft2) area shall not be less
than the specified minimum thickness. No single spot measurement in any 10 m2 (100 ft2) area shall be less than 80% of the
specified minimum thickness. Any gage reading may under-run by a greater amount. If the average of the spot measurements
for a given 10 m2 (100 ft2) area meets or exceeds the specified minimum thickness, but one or more spot measurements is less
than 80% of the specified minimum thickness, additional measurements may be made to define the non-conforming area.

5.2.2 Maximum Thickness: The average of the spot measurements for each 10 m2 (100 ft2) area shall not be more
than the specified maximum thickness. No single spot measurement in any 10 m2 (100 ft2) area shall be more than 120% of the
specified maximum thickness. Any gage reading may over-run by a greater amount. If the average of the spot measurements
for a given 10 m2 (100 ft2) area meets or falls below the specified maximum thickness , but one or more spot measurements is
more than 120% of the specified maximum thickness, additional measurements may be made to define the non-conforming
area. Manufacturers’ literature may be consulted to determine if higher maximum thickness readings are allowable under
specific circumstances.

Also you can see ASTM D 1186

There may be no. of reasons for failure in test.

What was required DFT ?

What was the max DFT observed ?

What is the average DFT observed ?

For Proper Pull Off test refer ASTM D3359

Test Method A—An X-cut is made in the film to the substrate, pressure-sensitive tape is applied over the cut and
then removed, and adhesion is assessed qualitatively on the 0 to 5 scale.

Test Method B—A lattice pattern with either six or eleven cuts in each direction is made in the film to the
substrate, pressure-sensitive tape is applied over the lattice and then removed, and adhesion is evaluated by comparison with descriptions and illustrations.


Test Method A is primarily intended for use at job sites while Test Method B is more suitable for use in the laboratory.
Also, Test Method B is not considered suitable for films thicker than 5 mils (125μm).



On Wed, Sep 26, 2012 at 12:47 PM, Ramchandra vichare <vicharerke@indiatimes.com> wrote:
Dear Experts;

with reference to the subject referred above please let me advise with documentary evidence about tolerances for  Painted items when DFT is specified. Why paining fail in cross cut/peel-off test(Pl. ref photograph attached)? How to control the same?

Requested to advise

Regards
RK Vichare

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Re: [MW:15409] MPT test method to check the Lamination on the Bevel Edge.

Yuo can use any mode of current AC or HWDC for WEP inspection. MT shall be done for tight laminations open to surface only.
Best u do Ut for subsurface laminations.
UT will give much better results than MT.
UT shall be done before WEP.

On Sep 19, 2012 3:07 PM, "Biplab Pal" <biplab.mech@googlemail.com> wrote:
The fitting is gas cut and then grinded for modification work of pipeline.


 
On Tue, Sep 18, 2012 at 2:17 PM, muthu barathi <muthu_barathi@rediffmail.com> wrote:

You have to mention some more details for correct advice.

1. whether the bevel was made by gas cut or machining?
If gas cut used w, while gas cutting it might be opened if lamination was present.

AC will detect only surface not sub surface.
If you want to see sub surface defects then you have to go for HWDC. That also you can go up
to 3mm effectively.
On Mon, 17 Sep 2012 21:36:56 +0530 wrote

>Dear Exparts,
 
I have a doubt regarding MPT method.
I am going to check the lamination of plates from the bevel edges.
What MPT current mode should we use.
Is it AC or HWDC?
Please share your knowledge and code references.
 
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Biplab Pal
Welding Inspector
E-mail:   biplab.mech@gmail.com
 
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Dear Sir,





Thanking You.

With Warm Regards,

Muthu barathi P,
Mobile No. 9099006785

Follow Rediff Deal ho jaye! to get exciting offers in your city everyday.

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Biplab Pal
Welding Inspector
E-mail:   biplab.mech@gmail.com
 
Information in this email and any attachments is confidential and intended solely for the use of the individual(s) to whom it is addressed or otherwise directed. Please note that any views or opinions presented in this email are solely those of the author and do not necessarily represent those of the Company. Finally, the recipient should check this email and any attachments for the presence of viruses. Myself accepts no liability for any damage caused by any virus transmitted by this email.
 

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[MW:34820] RE: 34813] Clarification in Rate of heating and cooling.

Hello,   Please see the response below.   Regards.   P. Goswami, P. Eng, IWE.   From: materials-welding@googlegroups.com <materials-weld...