Materials & Welding: October 2011

Monday, October 31, 2011

Re: [MW:12805] Welding Machines Calibration

Hi Tarek

Please refer the following standard: BS 7570 - code of practice for validation of arc welding equipment.

After reading this standard you have to write your own company procedure and include in QA manual.

Visit our group's blog at http://materials-welding.blogspot.com/ wherin this same topic has been discussed in the past.

Regards

Prem S Nautiyal

Mobile +91 9004063879 / 9769316004

--- On Mon, 10/31/11, Tarek Yehia <t.yehia2009@gmail.com> wrote:

From: Tarek Yehia <t.yehia2009@gmail.com>
Subject: [MW:12800] Welding Machines Calibration
To: materials-welding@googlegroups.com
Date: Monday, October 31, 2011, 6:22 PM

Dear Experts,

can any body tell me what is the recommended procedure for a/m subject and provide me with some written procedure or work instruction but should be based on applicable standard or suitable reference.

--

Best regards,

Tarek Yehia

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Re: [MW:12803] Welding Machines Calibration

My dear friend

regarding to your question about calibration of welding machine and another device in welding you can see these standard:

ISO 17662

BS 7570

WITH BEST REGARDS

--- On Mon, 10/31/11, Tarek Yehia <t.yehia2009@gmail.com> wrote:

From: Tarek Yehia <t.yehia2009@gmail.com>
Subject: [MW:12800] Welding Machines Calibration
To: materials-welding@googlegroups.com
Date: Monday, October 31, 2011, 4:22 PM

Dear Experts,

can any body tell me what is the recommended procedure for a/m subject and provide me with some written procedure or work instruction but should be based on applicable standard or suitable reference.

--

Best regards,

Tarek Yehia

--
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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.

Re: [MW:12802] BS EN 287-1 WPS vs. ASME IX WPS

hi dear

according to your explanation i think you do not know exactly any information aboutBS EN

I would like to inform you BS EN 287-1 is not usefull for WPS AND PQR .and oly use for welder qualification.

according to EN standard you should see EN 288-1,2,3,4 for WPS and PQR and according to ISO you must see ISO 15609 for wps and ISO 5614 for PQR

WITH BEST REGARDS

--- On Mon, 10/31/11, ken waterhouse <waterhouse.ken@gmail.com> wrote:

From: ken waterhouse <waterhouse.ken@gmail.com>
Subject: [MW:12801] BS EN 287-1 WPS vs. ASME IX WPS
To: "Materials & Welding" <materials-welding@googlegroups.com>
Date: Monday, October 31, 2011, 4:42 PM

Hi,

Just started a new job as welding supervisor. Aside from lots and lots
of other crap that is wrong with the way the company is doing things
at the moment, they have such a scattered array of WPS's in both ASME
IX and BS EN 287-1 that it is almost impossible to collate and use all
the information.

Our biggest client (national electricity supplier) is shifting to an
entirely BS EN 287-1 controlled system, from a mix of ASME and BS EN,
which means that we as a subcontractor of theirs must do the same.

I'm busy working through the WPS's available to me so far and trying
to relate them to one another, to see where we need to formulate
completely new WPS's and where we can trans-code them to their
equivalents. Also just to get the list of all of them in one place.

What I'm hoping is that someone out there has done something similar
to this before and how you approached it.

If it helps at all, our BSEN WPS #'s look like this S B 3 03. 8 (20) S
(SMAW, Butt, material 3, Sequence number 03, filler 8, Preheat 20
deg., Stress relieving)

and our ASME IX ones are as follows M B x 1. 8 (20) S (SMAW, Butt,
Symbol [on drawing], material group 1, filler group 8, 20deg. preheat
and stress relieving)

Any help would be appreciated,

Cheers,

Ken

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[MW:12801] BS EN 287-1 WPS vs. ASME IX WPS

Hi,

Just started a new job as welding supervisor. Aside from lots and lots
of other crap that is wrong with the way the company is doing things
at the moment, they have such a scattered array of WPS's in both ASME
IX and BS EN 287-1 that it is almost impossible to collate and use all
the information.

Our biggest client (national electricity supplier) is shifting to an
entirely BS EN 287-1 controlled system, from a mix of ASME and BS EN,
which means that we as a subcontractor of theirs must do the same.

I'm busy working through the WPS's available to me so far and trying
to relate them to one another, to see where we need to formulate
completely new WPS's and where we can trans-code them to their
equivalents. Also just to get the list of all of them in one place.

What I'm hoping is that someone out there has done something similar
to this before and how you approached it.

If it helps at all, our BSEN WPS #'s look like this S B 3 03. 8 (20) S
(SMAW, Butt, material 3, Sequence number 03, filler 8, Preheat 20
deg., Stress relieving)

and our ASME IX ones are as follows M B x 1. 8 (20) S (SMAW, Butt,
Symbol [on drawing], material group 1, filler group 8, 20deg. preheat
and stress relieving)

Any help would be appreciated,

Cheers,

Ken

[MW:12800] Welding Machines Calibration

Dear Experts,

can any body tell me what is the recommended procedure for a/m subject and provide me with some written procedure or work instruction but should be based on applicable standard or suitable reference.

Best regards,

Tarek Yehia

Re: [MW:12799] Differences between semi and fully killed steel

Dear kannayeram,

Is there any hand book or reference standard available for those quantities of Si and Al you mentioned?

Regards

On Sun, Oct 30, 2011 at 4:56 PM, kannayeram gnanapandithan <kgpandithan@gmail.com> wrote:

Si content shall be minimum 0.1 % or Al shall be minium 0.03% in case of fully killed steel verified by TC

On Sat, Oct 29, 2011 at 5:14 PM, meisam shokri arfaei <meisamshokri@gmail.com> wrote:

Dear experts,

I have a steel which marked as A516 Gr.70. I checked the metallugraphic structure and the microstructure is same as both semi and fully killed steel. (In SA516 it is defined that the quality grade shall be fully killed).

Now my question is:

How can I find that this steel is fully killed or semi killed?

Can anyone introduce any reference standard or handbook to differs between these two quality grades and also a test procedure for that purpose?

Regards

--

M. Shokri Arfaei

International Welding Engineer (IWE)

ASNT NDT Level III

ERI Metallurgy Lab. Manager

Tel: +98-21-66283696

Fax: +98-21-66283693

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M. Shokri Arfaei

International Welding Engineer (IWE)

ASNT NDT Level III

ERI Metallurgy Lab. Manager

Tel: +98-21-66283696

Fax: +98-21-66283693

Re: Re : [MW:12798] what filler metal can weld 1.4825

ER 309LSi(DCEN) FOR ROOT WELD

On Wed, Oct 26, 2011 at 6:06 PM, khemici badri <khemicib@yahoo.fr> wrote:

Hi;

I think that is better to use the E308H-15 sticke lectrode (DCEP) to weld this grade in order to conserve a high temperature strength and creep resistance in the welded joint.

Regards

Badri

De : Roy LIU刘艺 <standardliu@hotmail.com>
À : materials-welding@googlegroups.com
Envoyé le : Mardi 25 Octobre 2011 14h11
Objet : [MW:12771] what filler metal can weld 1.4825

Hi, experts,

A furnace equipment wants to weld material 1.4825 (Material No.), which filler metals could be applied for this?

Best regards

Roy
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RE: [MW:12797] flush type

Dear Ali,

Flush type is depend upon category, enclosed page can helps on same.

Regards,

Vimal Mistry

From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of venkadesh lakshmanan
Sent: 29 October 2011 20:27
To: materials-welding@googlegroups.com
Subject: Re: [MW:12792] flush type

Dear Ali,

All flush type connections we need to PWHT which is contact with bottom and shell plate connections that as shown in

API 650 figure 5-12.

This all requirements having in API 650 para 5.7.4 states which condition we need to do PWHT. Because we are not only

doing PWHT for flush type clean out fittings, even material group, thickness restriction, thickened insert plate also doing PWHT. I have attached that page for your reference.

Please feed back to me,

Regards

L.Venkadesh

On Fri, Oct 28, 2011 at 9:27 PM, Ali Asghari <asghariali@rocketmail.com> wrote:

Dear Venkadesh

In API650, there is requirement for PWHT of tanks in chapter3, but said for all flush type clean out must be stress relieved by PWHT.

now i want to know, it is applicable for all drain that contact with bottom plate or not?

Regards

From: venkadesh lakshmanan <venkadeshmech@yahoo.com>
To: materials-welding@googlegroups.com
Sent: Friday, October 28, 2011 9:10 AM
Subject: Re: [MW:12786] flush type

Dear Ali,

Flush type clean out using for drain the inside liquid completely. Because this elevation will be the same bottom plate elevation. but the nozzles all having some height from the bottom.

L.Venkadesh

On Thu, Oct 27, 2011 at 4:34 PM, Ali Asghari <asghariali@rocketmail.com> wrote:

Dear All

is there a specific meaning for flush type cleanout in API650?

if yes, what is diffrence between it with other nozzles?

Regards

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Sunday, October 30, 2011

Re: [MW:12796] Differences between semi and fully killed steel

Si content shall be minimum 0.1 % or Al shall be minium 0.03% in case of fully killed steel verified by TC

On Sat, Oct 29, 2011 at 5:14 PM, meisam shokri arfaei <meisamshokri@gmail.com> wrote:

Dear experts,

I have a steel which marked as A516 Gr.70. I checked the metallugraphic structure and the microstructure is same as both semi and fully killed steel. (In SA516 it is defined that the quality grade shall be fully killed).

Now my question is:

How can I find that this steel is fully killed or semi killed?

Can anyone introduce any reference standard or handbook to differs between these two quality grades and also a test procedure for that purpose?

Regards

--

M. Shokri Arfaei

International Welding Engineer (IWE)

ASNT NDT Level III

ERI Metallurgy Lab. Manager

Tel: +98-21-66283696

Fax: +98-21-66283693

--
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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.

Re: [MW:12795] PIPE TO WLDOLET JOINT THICKNES

Based on the type of fit-up if Stub-in Run pipe thicknes or if
Stub-on Branch pipe thickness.

Liyakath alik A

On 10/26/11, Mohamed Khaleel <smohdkhaleel@gmail.com> wrote:
> Run pipe to banch connection through weldolet fitting used. i need to
> know what is the joint thicknes considered for selection of WPS. For
> Ex. thickness at 6" run pipe to 2" weldolet branch.
>
> --
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> To unsubscribe from this group, send email to
> materials-welding+unsubscribe@googlegroups.com
> For more options, visit this group's bolg at
> http://materials-welding.blogspot.com/
> 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.
>

Re: [MW:12794] If i have a WPS for 1G position groove weld (SAW) , Can i qualify lap joint welder ?

Hi,

Lap joint is welded by fillet weld and if you have 1 g qualified wps / PQR
then you can very well use the same for Lap joint.

On Sat, 29 Oct 2011 20:20:59 +0530 wrote
>Hi Welding People

I am little bit confused about an issue that can i qualify lap joint

with 1G groove weld wps or not? I could not found about what qualifies

lap joints. Can i consider lap joint as a filled weld and qualify by

groove weld?

Thank for your attention

Tugrulhan

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welding.blogspot.com/

The views expressed/exchnaged in this group are members personel views and
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applicable code/standard/contract documents.

Dear Sir,

Thanking You,

Honesty is the best Policy

With Warm Regards,

Muthu Barathi P
Mobile No:00962788269821 (Jordan)
00962775401951

Treat yourself at a restaurant, spa, resort and much more with Rediff Deal ho jaye!

Re: [MW:12793] If i have a WPS for 1G position groove weld (SAW) , Can i qualify lap joint welder ?

it can be qualified by grooved weld

On Sat, Oct 29, 2011 at 5:31 PM, tugrulhan özdemir <tugrulhan9@gmail.com> wrote:

Hi Welding People

I am little bit confused about an issue that can i qualify lap joint
with 1G groove weld wps or not? I could not found about what qualifies
lap joints. Can i consider lap joint as a filled weld and qualify by
groove weld?

Thank for your attention

Tugrulhan

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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.

Saturday, October 29, 2011

Re: [MW:12792] flush type

Dear Ali,

All flush type connections we need to PWHT which is contact with bottom and shell plate connections that as shown in

API 650 figure 5-12.

This all requirements having in API 650 para 5.7.4 states which condition we need to do PWHT. Because we are not only

doing PWHT for flush type clean out fittings, even material group, thickness restriction, thickened insert plate also doing PWHT. I have attached that page for your reference.

Please feed back to me,

Regards

L.Venkadesh

On Fri, Oct 28, 2011 at 9:27 PM, Ali Asghari <asghariali@rocketmail.com> wrote:

Dear Venkadesh
In API650, there is requirement for PWHT of tanks in chapter3, but said for all flush type clean out must be stress relieved by PWHT.
now i want to know, it is applicable for all drain that contact with bottom plate or not?

Regards

From: venkadesh lakshmanan <venkadeshmech@yahoo.com>
To: materials-welding@googlegroups.com
Sent: Friday, October 28, 2011 9:10 AM
Subject: Re: [MW:12786] flush type

Dear Ali,
Flush type clean out using for drain the inside liquid completely. Because this elevation will be the same bottom plate elevation. but the nozzles all having some height from the bottom.

L.Venkadesh

On Thu, Oct 27, 2011 at 4:34 PM, Ali Asghari <asghariali@rocketmail.com> wrote:

Dear All

is there a specific meaning for flush type cleanout in API650?
if yes, what is diffrence between it with other nozzles?
Regards
--
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For more options, visit this group's bolg at http://materials-welding.blogspot.com/
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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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.

[MW:12791] If i have a WPS for 1G position groove weld (SAW) , Can i qualify lap joint welder ?

Hi Welding People

I am little bit confused about an issue that can i qualify lap joint
with 1G groove weld wps or not? I could not found about what qualifies
lap joints. Can i consider lap joint as a filled weld and qualify by
groove weld?

Thank for your attention

Tugrulhan

[MW:12790] Differences between semi and fully killed steel

Dear experts,

I have a steel which marked as A516 Gr.70. I checked the metallugraphic structure and the microstructure is same as both semi and fully killed steel. (In SA516 it is defined that the quality grade shall be fully killed).

Now my question is:

How can I find that this steel is fully killed or semi killed?

Can anyone introduce any reference standard or handbook to differs between these two quality grades and also a test procedure for that purpose?

Regards

--

M. Shokri Arfaei

International Welding Engineer (IWE)

ASNT NDT Level III

ERI Metallurgy Lab. Manager

Tel: +98-21-66283696

Fax: +98-21-66283693

[MW:12788] RE: Liquid metal

Hello,

Please see the article on "LME". It would be of interest to
you.Embrittlement typically initiates in the liquid phase, low melting
phases will generally segregate along the grain boundary upon solidification
and initiate cracking. The elements mentioned below are common culprits, but
I've come across "copper induced " embrittlement also.

Usually one has to be careful on these elements either while welding or
during application of paints or any high temperature applications.

Thanks.

Pradip Goswami,P.Eng.IWE
Welding & Metallurgical Specialist & Consultant
Ontario,Canada.
Email-pgoswami@sympatico.ca,
pgoswami@quickclic.net

-----Original Message-----
From: pradip kumar sil [mailto:pradipsil@gmail.com]
Sent: Wednesday, October 26, 2011 3:18 AM
To: materials-welding@googlegroups.com
Cc: pgoswami
Subject: Liquid metal

Dear All,
How can i interprete for liquid metal ASME B-31.3 appendix F323.4 C article
(3)

the susceptibility to intercrystalline attack of austanitic stainless steel
on contact with liquid metal (including
aluminium,antimony,bismuth,cadmium,gallium,lead,magnacium,tin,&zinc)or their
compounds.

Regards
Pradip

Friday, October 28, 2011

Re: [MW:12789] flush type

Dear Venkadesh

In API650, there is requirement for PWHT of tanks in chapter3, but said for all flush type clean out must be stress relieved by PWHT.

now i want to know, it is applicable for all drain that contact with bottom plate or not?

Regards

From: venkadesh lakshmanan <venkadeshmech@yahoo.com>
To: materials-welding@googlegroups.com
Sent: Friday, October 28, 2011 9:10 AM
Subject: Re: [MW:12786] flush type

Dear Ali,

Flush type clean out using for drain the inside liquid completely. Because this elevation will be the same bottom plate elevation. but the nozzles all having some height from the bottom.

L.Venkadesh

On Thu, Oct 27, 2011 at 4:34 PM, Ali Asghari <asghariali@rocketmail.com> wrote:

Dear All

is there a specific meaning for flush type cleanout in API650?
if yes, what is diffrence between it with other nozzles?
Regards
--
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For more options, visit this group's bolg at http://materials-welding.blogspot.com/
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.

Re: [MW:12787] quenching of stainless steel AISI304L

Dear Feyzullayev

It is impossible to quench the stainless steel 304. Because it is already a austenitic steel and what quenching ever you do it will be still austenitic so there will be no increasing in hardness

2011/10/27 Elshan Feyzullayev <elshan_f@hotmail.com>

Is it possible to quench the subjected steel?

best regards,
El.

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Tuğrulhan ÖZDEMİR

Metalürji & Malzeme Müh. (Y.T.U.)

U.Kaynak Mühendisi (I.W.E.)

Re: [MW:12786] flush type

Dear Ali,

Flush type clean out using for drain the inside liquid completely. Because this elevation will be the same bottom plate elevation. but the nozzles all having some height from the bottom.

L.Venkadesh

On Thu, Oct 27, 2011 at 4:34 PM, Ali Asghari <asghariali@rocketmail.com> wrote:

Dear All

is there a specific meaning for flush type cleanout in API650?
if yes, what is diffrence between it with other nozzles?
Regards

--
To post to this group, send email to materials-welding@googlegroups.com
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For more options, visit this group's bolg at http://materials-welding.blogspot.com/
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.

Thursday, October 27, 2011

[MW:12785] RE: 12781] quenching of stainless steel AISI304L

Yes.

For 304L quenching may actually be advantageous from a corrosion standpoint by minimizing M23C6 ppt. formation (yes – even L grades will form some grain boundary carbide during welding). It may be disadvantageous with regard to distortion. If highly restrained and insufficient weld metal in place may cause cracking. You would have to supply more information.

Accelerated cooling to get interpass temperature down will likely have no effect – I have used water soaked rags to cool austenitic stainless steel welds from around 600F (315C) to 250F (120C) with no noticeable effects.

John A. Henning

Welding & Materials

From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Elshan Feyzullayev
Sent: Thursday, October 27, 2011 5:10 AM
To: materials-welding@googlegroups.com
Subject: [MW:12781] quenching of stainless steel AISI304L

Is it possible to quench the subjected steel?

best regards,
El.

[MW:12784] flush type

Dear All

is there a specific meaning for flush type cleanout in API650?

if yes, what is diffrence between it with other nozzles?

Regards

Re: [MW:12783] PIPE TO WLDOLET JOINT THICKNES

Dear Mohammed,

That is 2 " weldolet thickness.

Thanks,

K.Rajagopal

On Wed, Oct 26, 2011 at 3:55 PM, Mohamed Khaleel <smohdkhaleel@gmail.com> wrote:

Run pipe to banch connection through weldolet fitting used. i need to
know what is the joint thicknes considered for selection of WPS. For
Ex. thickness at 6" run pipe to 2" weldolet branch.

--
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Re: [MW:12782] PIPE TO WLDOLET JOINT THICKNES

Mohamed,
Regarding Branch connection PWHT check ASME B 31.3
..331.1.3 (a) and 328.5.4 d for branch connecton sketches also refer
below article from B 31.3
Regards
Mano
In the case of branch connections, metal (other
than weld metal) added as reinforcement, whether an
integral part of a branch fitting or attached as a reinforcing
pad or saddle, shall not be considered in determining
heat treatment requirements. Heat treatment is required,
however, when the thickness through the weld in any
plane through the branch is greater than twice the minimum
material thickness requiring heat treatment, (38 mm)

2011/10/26, Mohamed Khaleel <smohdkhaleel@gmail.com>:
> Run pipe to banch connection through weldolet fitting used. i need to
> know what is the joint thicknes considered for selection of WPS. For
> Ex. thickness at 6" run pipe to 2" weldolet branch.
>
> --
> To post to this group, send email to materials-welding@googlegroups.com
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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.
>

[MW:12781] quenching of stainless steel AISI304L

Is it possible to quench the subjected steel?

best regards,
El.

Re: [MW:12780] PIPE TO WLDOLET JOINT THICKNES

In this case you have to consider branch pipe's wall thickness
On Thu, 27 Oct 2011 12:42:07 +0530 wrote
>Run pipe to banch connection through weldolet fitting used. i need to

know what is the joint thicknes considered for selection of WPS. For

Ex. thickness at 6" run pipe to 2" weldolet branch.

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applicable code/standard/contract documents.

Dear Sir,

Thanking You,

Honesty is the best Policy

With Warm Regards,

Muthu Barathi P
Mobile No:00962788269821 (Jordan)
00962775401951

Treat yourself at a restaurant, spa, resort and much more with Rediff Deal ho jaye!

[MW:12779] TEMPERATURE APPLICATION RANGE FOR SS304 & SS304L

Dear all,

is there any differences between temperature application for SS304 & SS304L?

I found somewhere that SS304L can be used from absulte zero to 850 deg F and SS304 from absulte zero to 1500 deg F.

is it correct?

Regards,

[MW:12778] dissimilar weld

hai experts ...

i want to know , how can i propose wps for P11 to SS (TP 321)...with thickness 24.5 mm thickness ... is it require buttering and PWHT,if it have , then how can i do ..?..

once time i have done that first we done butterin on alloy and send to PWHT ... After PWHT we make the joint and done welding ... but here it my client is telling no need PWHT .

IF IT IS NOT DOING PWHT WHAT PROBLEM WILL COME .... AND WHICH FILLER WE CAN USE FOR THIS JOINTS ...

Thanking you ...

NOORUDHEEN P HAMZA

Wednesday, October 26, 2011

Re : [MW:12777] what filler metal can weld 1.4825

Hi;

I think that is better to use the E308H-15 sticke lectrode (DCEP) to weld this grade in order to conserve a high temperature strength and creep resistance in the welded joint.

Regards

Badri

De : Roy LIU刘艺 <standardliu@hotmail.com>
À : materials-welding@googlegroups.com
Envoyé le : Mardi 25 Octobre 2011 14h11
Objet : [MW:12771] what filler metal can weld 1.4825

Hi, experts,

A furnace equipment wants to weld material 1.4825 (Material No.), which filler metals could be applied for this?

Best regards

Roy

Re: [MW:12776] what filler metal can weld 1.4825

Dear Roy,

Please provide the more details about materials (stad, code, compositions) and applications.

Regards

Amit Pahuja

On Tue, Oct 25, 2011 at 9:11 PM, Roy LIU刘艺 <standardliu@hotmail.com> wrote:

Hi, experts,

A furnace equipment wants to weld material 1.4825 (Material No.), which filler metals could be applied for this?

Best regards

Roy

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[MW:12775] PIPE TO WLDOLET JOINT THICKNES

Run pipe to banch connection through weldolet fitting used. i need to
know what is the joint thicknes considered for selection of WPS. For
Ex. thickness at 6" run pipe to 2" weldolet branch.

[MW:12774] RE: PWHT in TP 321

By any chance does your project spec calls for "Stabilization anneal". It's
a post fabrication anneal(850-900 deg C)applied for stabilized stainless
steels to improve the post fabrication corrosion resistance.

If you could provided more details, I could write to more about the pros and
cons of this method.

Thanks.

Pradip Goswami,P.Eng.IWE
Welding & Metallurgical Specialist & Consultant
Ontario,Canada.
Email-pgoswami@sympatico.ca,
pgoswami@quickclic.net

-----Original Message-----
From: pradip kumar sil [mailto:pradipsil@gmail.com]
Sent: Wednesday, October 26, 2011 2:17 AM
To: materials-welding@googlegroups.com
Cc: pgoswami
Subject: PWHT in TP 321

Dear Everybody,
First of all Wise you a happy diwali to you & your family.
In my project specification says ASTM A 312 TP 321 has PWHT. My question is
why we will do TP 321 needs to do PWHT because this material have high Cr/Ni
as well as Ti.
Regards
Pradip

Re: [MW:12773] microstructure during arc welding

Dear Antony

1 - Purpose of evaluating microstructure in mild steel is to understand weather some undesired phases produced during welding or not, however in mild steel producing such phases (such as martensite) is not a probable problem. The other purpose is to see how weld metal, HAZ and base metal arranged.

2 – As far we know, HAZ consist of three zones. The first is recrystallization part, the second is coarse grain zone and the third is fine grain zone. Each part is important in situ. For example unexpected growing of grains in recrystallization and coarse grain zones will affect impact properties of steel. Also dimension of these three parts is important.

3 – If carbon equivalent goes to increase, the presence probability of martensite will increase also. Some precautionary actions shall assist in welding, such as preheating.

Regards

On Tue, Oct 25, 2011 at 1:11 AM, Antony Jopen <antonyjopen@gmail.com> wrote:

Hi,

Could someone throw some light on the the following topics:

1. Development of microstructure during arc welding of mild steel plate.
2. Changes which occur in the HAZ.

3. How would the structure change if the CE of the steel was increased.

Many thanks in advance.

--
Regards

Antony.

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M. Shokri Arfaei

International Welding Engineer (IWE)

ASNT NDT Level III

ERI Metallurgy Lab. Manager

Tel: +98-21-66283696

Fax: +98-21-66283693

Re: [SUSPECTED SPAM] RE: [MW:12772] RT density

Dear Mr. Vichare,
Pls, provide code referance of Minus 15% to + 30 % film density
veriation is permitted.
Regards
Sil

On 10/25/11, Ramchandra vichare <vicharerke@indiatimes.com> wrote:
> Dear Friends,
>
> Film density veriation permitted by code is Minus 15% - Pluss 30% (i.e. may
> be gama or xray) but suppose client specifies special requirement (in
> writting) related to density you must follow clients requirement.
>
> Regards,
>
> RK Vichare
>
> ----- Original Message -----
>
> From: Jean Staton
>
> To: materials-welding@googlegroups.com
>
> Sent: Mon, 24 Oct 2011 17:47:55 +0530 (IST)
>
> Subject: RE: [MW:12760] RT density
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
> The only where I see that 1.3 is allowed is for composite viewing.
>
>
>
>
>
>
>
>
> From: materials-welding@googlegroups.com
> [mailto:materials-welding@googlegroups.com]
>
> On Behalf Of pankaj kolhe
>
>
> Sent: Saturday, October 22, 2011 11:42 AM
>
>
> To: materials-welding@googlegroups.com
>
>
> Subject: Re: [MW:12753] RT density
>
>
>
>
>
>
>
> But somewhere i have read that on overlapped area minimum density required
> is 1.3 is it true?
>
>
> pankaj
>
>
>
>
>
> On Sat, Oct 22, 2011 at 12:18 AM, Jean Staton <Jean.Staton@metco-ndt.com>
> wrote:
>
>
>
>
>
>
>
>
> Referring to ASME V, Art. 2 T-282.1 & 282.2 I understand it to read that the
> "area of interest" (and IQI) can not exceed 2.0 to 4.0.
>
> What is your area of interest, is it between the location markers, is it the
> weld, heat affected zone, base metal, how much "area of interest" do you
> have? I have one level III that has said "area of interest" is between
> position/location markers, while other
>
> Level III's have said it's the area that you are interested in. Spelling it
> out in the Procedure would be ideal.
>
>
>
>
>
>
>
>
> From:
>
> materials-welding@googlegroups.com
> [mailto:materials-welding@googlegroups.com]
>
> On Behalf Of meisam shokri arfaei
>
>
> Sent: Friday, October 21, 2011 1:15 AM
>
>
> To: materials-welding@googlegroups.com
>
>
> Subject: Re: [MW:12737] RT density
>
>
>
>
>
>
>
>
>
>
> Dear Pankaj,
>
>
>
>
>
>
>
>
>
> Any NDT related work shall have a written procedure. These procedures may be
> in accordance with one or more codes or standards which support the user for
> some special works. In
>
> those procedures special situation for the work shall be defined. the first
> place that you have to search for such information about overlap of films is
> in written procedures.
>
>
>
>
>
>
>
> But in general, there is a qualified range of film density that the
> interpreter can evaluate radiographic film in this range. The overlap shall
> be in such a way that each part of
>
> the film that is out of this range (usually lesser in density) repeats in
> next shoot within the in-range film density.
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
> Regards
>
>
>
>
>
>
>
> On Thu, Oct 20, 2011 at 10:38 PM, Nandesh Kumar
> <nandeshkumar@rocketmail.com> wrote:
>
>
>
>
>
>
>
>
>
>
>
>
>
>
> Dear Pankaj,
>
>
>
>
>
>
>
>
>
>
>
>
>
> Film overlap is given only for identification purpose that the same weld is
> continued.
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
> Dont measure the density on the overlapped lighter area. Measure the density
> on un overlapped area of the previous film.
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
> Its a general knowledge and no code says anything about that, as far as I
> know.
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
> Nandeesh
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
> --- On Thu, 20/10/11, pankaj.kolhe15 <pankaj.kolhe15@gmail.com> wrote:
>
>
>
>
>
> From: pankaj.kolhe15 <pankaj.kolhe15@gmail.com>
>
>
> Subject: [MW:12728] RT density
>
>
> To: "pgoswami" <pgoswami@quickclic.net>, "materials-welding"
> <materials-welding@googlegroups.com>
>
>
> Date: Thursday, 20 October, 2011, 3:09 PM
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
> Dear sir,
>
>
> what is the density requirement at overlapped area , if the two films
>
>
> got overlapped
>
>
> for gamma rays and where it is written
>
>
>
>
>
> --
>
>
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>
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>
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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.
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
> --
>
>
>
>
> To post to this group, send email to
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> The views expressed/exchnaged in this group are members personel views and
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> w.r.t. applicable code/standard/contract documents.
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>
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>
>
>
>
>
>
>
>
>
>
> --
>
>
>
>
>
> M. Shokri Arfaei
>
>
>
>
>
>
>
> International Welding Engineer (IWE)
>
>
>
>
>
>
>
> ASNT NDT Level III
>
>
>
>
>
>
>
> ERI Metallurgy Lab. Manager
>
>
>
>
>
>
>
> Tel: +98-21-66283696
>
>
>
>
>
>
>
> Fax: +98-21-66283693
>
>
>
>
>
>
>
>
>
>
> --
>
>
>
>
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> The views expressed/exchnaged in this group are members personel views and
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