Re: [MW:30096] F‐No. 6.

F no may not be issues. Only weld metal A no may be issues. 

On Mon, 30 Sep 2019 10:54 am 'Raja kumarasamy' via Materials & Welding, <materials-welding@googlegroups.com> wrote:

Dear sirs,

kindly advise on the below query.....

 Deposited weld metal made using a bare rod not covered by an SFA Specification but which conforms to an analysis listed in Table QW-442 shall be considered to be classified as F‐No. 6.

 Regards

Raja 

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Re: [MW:30093] RE: 29965] Impact test fails FCAW process

Yes I agree with Goswami sir.

It is not easy to qualify with impact with low temperature.

Need to control & record minor data for conclusion of any results,including position of welding, Groove geometry, no of passes, heat input & deposition of each pass,gas composition/mixtures,& finally manufacturer/ brand.

Please share.

CLV

On Wed, Aug 21, 2019 at 2:42 AM PGoswami <pgoswami@quickclic.net> wrote:

Hi,

 

Please see the attached, info on typical FCAW consumable conforming to AWS E71 T12 CJ specifications. Qualifying PQR with FCAW process  on 70mm thk plates with PWHT and with impact @-46 Deg C is not easy. Following areas should need attention:-

 

·         Impact values of the consumable, qualification position , 1G or 3G?

·         If required ask the consumable manufacturer for impact results in 3G position.

·         Your coupon passed in 2G, that's due to the stringer bead technique and lower heat input, what were the recorded heat input??

·         Any data on results of the similar product with PWHT(ask consumable manufacturer).

·         In order to have a good and consistent impact 1.2.-1.4% Mn or more would be desirable. However in case of hardness restrictions, Manganese have to be restricted.

·         Last of shielding gas, for consistent -46 Deg C impact on 70mm thk coupons, use  of mixed gas, 80/20 Argon+CO₂ or better(90/10).  Would be advisable.

 

Thanks.

 

P.Goswami.P.Eng, IWE.

Independent  & Consulting Welding & Metallurgical Specialist

Linkedin: https://www.linkedin.com/in/pradip-goswami-2999855/

Email:pgoswami@quickclic.net,pradip.goswami@gmail.com

Cell/Whasapp:1-905-9793232

 

-----Original Message-----
From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of chakotevishal47@gmail.com
Sent: August 18, 2019 12:38 PM
To: Materials & Welding <materials-welding@googlegroups.com>
Subject: [MW:29965] Impact test fails FCAW process

 

Dear experts,

We have carried out FCAW WPQR with PWHT. Welding consumable is E71 T12 CJ. Below are the conditions

 

Test coupon thk- 70 mm

Parent material- S355 G8+N

Process- FcAW

Welding consumable- E71T-12CJ

PWHT Temp- 580 deg C

Soaking time - 280 minutes

Impact test temp- minus 40 deg C

Heat input range (root)- 1.0-1.6 KJ/mm

Heat input range (cap)- 1.0-1.4 KJ/mm

Thermal efficiency- 0.8

Welding position-3G

 

 

The above welding consumable is recommended for PWHT.

 

The impact values are too low at root as well as cap.

 

Energy values- 16,15,25 J (root)

Energy values- 30,30,31 J (cap)

 

Can you please focus on impact values failure reasons?

 

Even if keeping low heat inputs the test has failed.

 

What could be the possible reasons of failure?

 

And with the same conditions WPQR passed with 2G position.

 

Please focus on possible reasons.

 

Regards,

 

Vishal

 

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Re: [MW:30093] Heat treatment of WPS

Right Sir.

On Mon, Aug 12, 2019 at 5:40 PM 'Prakash Hegde' via Materials & Welding <materials-welding@googlegroups.com> wrote:

Hi!

Pl clarify

1)a)Does Dishend.have weld seam which ll undergo normalsing? After forming

If yes you wiil req qualified.WPS/pqr of normalise +pwht below Ac1 as per code for P1

b)If no then you need not.have pqr of Normalising but only Pwht below Ac1 as per code for P1

2) in case of condition (a) you should have 2Pqr one with NR+pwht  and second with pwht below Ac1

In case of condition (b) only.one Pqr of pwht below Ac1 temp as per P1 matl

Regards

Hegde

Sent from Yahoo Mail on Android

On Mon, 12 Aug 2019 at 15:44, chiluka venkatramulu

<ramuluchiluka@gmail.com> wrote:

Dear All,

Pl clarify the below.

One of vessel under fabrication will under go the fallowing heat treatments. (Material-516 G 70, shell-63 mm, dish end -75mm, dish end in one piece only)

• Dishends Normalising-2 cycle.
• PWHT for whole vessel.

Now shall I need to do all three heat treatment cycles to qualify WPS?

OR

Only two normalising cycles are enough?

Regards,

Venkatramulu

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[MW:30093] F‐No. 6.

Dear sirs,

kindly advise on the below query.....

 Deposited weld metal made using a bare rod not covered by an SFA Specification but which conforms to an analysis listed in Table QW-442 shall be considered to be classified as F‐No. 6.

 Regards

Raja 

[MW:30092] Shear anchor welding

Dear Experts,

I would like to get your advice and opinion  about the welding og above subject.

We have to weld  1000 shear anchors on stainless steel 10 mm thick 

Following are the quality of the plate and anchor.

Plate      SA 240 Type 304

Shear Anchor    16x150mm S235J2+ C470

I would like to know whether we use  shear anchor welding machine to do the welding. These are the two different materials and chemical compositions are different we have to use  SS 309l welding rods and do the manual welding using SMAW or FCAW welding process.

Please give your valuable opinion.

Thanks in advance.

Cyriac Dominic

Virus-free. www.avast.com

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[MW:30091] concrete base in destilation tower

Dear Group,

 

Please consider attached pictures.

 

This is a de butanizer tower in cryogenic gas process unit.

 

Due to low process temperatures, and even with isolation, there´s ice that is created in some sections of tower and it´s pipes.

 

Ice blocks, with some environment conditions, begins to melt in form of water drops, which falls from a high altitude and hit concrete base of tower.

 

As you can see, concrete base has damages due to impact of water drops.

 

Now, our theme is determinate which steps we could follow to recover the concrete base to original conditions.

 

I´d like to know is it´s necessary a civil engineering develop which could determine action to take.

 

Please if you can give me some references of your experiences or codes/standars to manage this kind of cases

 

Thanks in advance

 

Best regards

 

Miroslav Tadic

Integrity Enginner

Telef. Of. 591-3-3663714

Gerencia de producción

YPFB Chaco S.A.

Re: [MW:30090] Re: PQR for PTAW Process by ASME Sec IX

It is important that you mention what the Construction Code is

El mar., 24 sept. 2019 a las 4:48, Bien_ND / weldinginspections.net (<bck055@gmail.com>) escribió:

please run follow machine manual and consumable manual.
I did a procedure PTA with Dura-Metal as them instruction.


On Monday, September 23, 2019 at 10:24:23 AM UTC+7, sathis...@gmail.com wrote:
> Dear Experts
>
> I would like to know below query on preparation of PQR as per ASME Sec IX, Process: PTAW by hardfacing overlay by Stellite 6 Powder
>
>
>
> 1. What is the current, voltage, Gas flow and Powder feed rate need to be maintained for 10mm and 25mm thickness plate. To which standard and reference i need to refer.
>
>
>
> 2. What is the pre heating and interpass temperature need to be maintained for P.No: 1,8,4,5A, 15E and to which standard need to refer
>
>
>
> 3. What is the hardness requirement for P.No: 1,8,4,5A, 15E during testing PQR? Which standard is mentioned this requirement?
>
>
>
> 4. Chemical analysis is mandatory for Co base as per ASME Sec IX , Table QW: 453
>
>
>
> Kindly give your suggestion and feedback for the above doubts
>
>
>
> Thanks in advance

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[MW:30089] Re: PQR for PTAW Process by ASME Sec IX

please run follow machine manual and consumable manual.
I did a procedure PTA with Dura-Metal as them instruction.


On Monday, September 23, 2019 at 10:24:23 AM UTC+7, sathis...@gmail.com wrote:
> Dear Experts
>
> I would like to know below query on preparation of PQR as per ASME Sec IX, Process: PTAW by hardfacing overlay by Stellite 6 Powder
>
>
>
> 1. What is the current, voltage, Gas flow and Powder feed rate need to be maintained for 10mm and 25mm thickness plate. To which standard and reference i need to refer.
>
>
>
> 2. What is the pre heating and interpass temperature need to be maintained for P.No: 1,8,4,5A, 15E and to which standard need to refer
>
>
>
> 3. What is the hardness requirement for P.No: 1,8,4,5A, 15E during testing PQR? Which standard is mentioned this requirement?
>
>
>
> 4. Chemical analysis is mandatory for Co base as per ASME Sec IX , Table QW: 453
>
>
>
> Kindly give your suggestion and feedback for the above doubts
>
>
>
> Thanks in advance

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[MW:30088] Vinyl ester glass flake lining on remote areas.

Dear Members,

  As per our project requirements, vessel internal surface to be coated with vinyl ester glass flake lining, however some remote areas eg (flange to pipe bolting holes) considering coating brittleness may break after bolting, we are unable to conduct vinyl ester glass flake lining.

   Kindly advice the best suitable method to provide coating on remote areas

Regards

Raju Kandula

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[MW:30084] Re: Heat treatment of WPS

first to think wps is for weld .so your weld is facing only pwht so you have to quailfy wps by pwht only , normalizing of dish head to do separately.if dish head is welded than wps to qualify with normalize + pwht in isngle coupon as per sec 9

On Monday, 12 August 2019 15:44:19 UTC+5:30, chiluka venkatramulu wrote:

Dear All,

Pl clarify the below.

One of vessel under fabrication will under go the fallowing heat treatments. (Material-516 G 70, shell-63 mm, dish end -75mm, dish end in one piece only)

• Dishends Normalising-2 cycle.
• PWHT for whole vessel.

Now shall I need to do all three heat treatment cycles to qualify WPS?

OR

Only two normalising cycles are enough?

Regards,

Venkatramulu

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[MW:30084] PQR for PTAW Process by ASME Sec IX

Dear Experts I would like to know below query on preparation of PQR as per ASME Sec IX, Process: PTAW by hardfacing overlay by Stellite 6 Powder 1. What is the current, voltage, Gas flow and Powder feed rate need to be maintained for 10mm and 25mm thickness plate. To which standard and reference i need to refer. 2. What is the pre heating and interpass temperature need to be maintained for P.No: 1,8,4,5A, 15E and to which standard need to refer 3. What is the hardness requirement for P.No: 1,8,4,5A, 15E during testing PQR? Which standard is mentioned this requirement? 4. Chemical analysis is mandatory for Co base as per ASME Sec IX , Table QW: 453 Kindly give your suggestion and feedback for the above doubts Thanks in advance

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[MW:30086] Re: Diameter qualified for set in nozzle

Refer to QW-403.16.

On Monday, September 16, 2019 at 2:26:13 PM UTC+7, ibratech wrote:

Gents, 

Is there any interpretation available for set in type nozzle welding diameter not essential variable for welder qualification?.

Reg

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[MW:30087] Re: UT requirement acceptance criteria API5LD

API 5LD is not very clear on this, std needs a revision to address this along with other issues (there are many problems with this std). However, I would recommend you to perform UT for disbondment inspection as per the criteria laid in Clause 11.1 of API 5LD     

On Thursday, August 15, 2019 at 10:13:56 PM UTC+5:30, neilash kumar wrote:

Gents 

Is there UT mandatory as per API5LD?  For claded product . Weld overlay on pipes.

Regards

Neilashkumar 

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[MW:30083] MW group on Linked in now 20000+ https://goo.gl/nmfeXy

Hastealloy is claded on Carbon steel.
There are segments .
These segments are to be welded in assembly at site though butt welds of the claded plates.
Pl let us know the fabrication sequence techniques.

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Re: [MW:30083] Simulation heat treatment as per code

Any ref pl

On Fri, 20 Sep 2019 9:20 am Souravbohray, <ermechsouravbohray@gmail.com> wrote:

1.if during fabrication your temorature is more than 480c either by welding, preheat, forming you have to do simulation
2.now question raise we do pwht, stress(temp lower than lower critical temprature) relieving than require simulation or not answer is no because for Pnumber 1 exemption is given for this.
3.now question raises we have 2 matter hot forming and cold forming, cold forming can be done upto 16 mm thick plate no requirment of simulation but for more than16mm hit forming, swagging of nozzle required for which temprature is more than lower critical temprature so normalizing to be done with simulation.
4.fir this case raw material to be purchased with with 2 times nornalized(1 normalize due to requirment of hot forming of dish, she'll, nozzle, 2 if repair come it's to be repair)
If this kind of plate not available than purchase material in which tensile strength is in range near max range if tensike, strength)
5.if nozzle, dish head consist of long seam and hot forming required than pqr to be required with normalized two times
Hopes you understand

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[MW:30081] As per API 650

Dear Experts,

 

Can anyone give me brief details, How to review WPS as per API 650.

 

Regarding Impact test requirement and PWHT.

 

We have some WPS with Section IX for tanks;

 

  1) What are the requirements required for tanks?

    2) Thickness range? (If our thickness range more than 150mm we required PWHT or not).

3)       Impact test requirement MDMT- minus 5°C? Impact test require for Nozzle neck joints. 

4)      How I can know that requirements of PWHT ?    

 Is there any checklist or any other additional requirement's please give me full details with your  explanation.

 

Looking your valuable reply on my doubts. 

 

Thanks and regards

Kiran 

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[MW:30081] Simulation heat treatment as per code

1.if during fabrication your temorature is more than 480c either by welding, preheat, forming you have to do simulation
2.now question raise we do pwht, stress(temp lower than lower critical temprature) relieving than require simulation or not answer is no because for Pnumber 1 exemption is given for this.
3.now question raises we have 2 matter hot forming and cold forming, cold forming can be done upto 16 mm thick plate no requirment of simulation but for more than16mm hit forming, swagging of nozzle required for which temprature is more than lower critical temprature so normalizing to be done with simulation.
4.fir this case raw material to be purchased with with 2 times nornalized(1 normalize due to requirment of hot forming of dish, she'll, nozzle, 2 if repair come it's to be repair)
If this kind of plate not available than purchase material in which tensile strength is in range near max range if tensike, strength)
5.if nozzle, dish head consist of long seam and hot forming required than pqr to be required with normalized two times
Hopes you understand

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Re: [MW:30080] AWS D1.1

No restrictions. If we use GMAW with solid wire in Globular &Spray transfer is not allowed in overhead position. 

On Thu, 19 Sep 2019 11:44 am K K, <karan.hbl@gmail.com> wrote:

Dear Sir,

SMAW Process.

On Wednesday, September 18, 2019 at 6:59:50 PM UTC+5:30, kannayeram gnanapandithan wrote:

no, what is process going to be used

THANKS & BEST REGARDS,

KG.PANDITHAN, BE, IWE,  CSWIP 3.1,

ISO 9712 Level 2 in VT,

ASNT-Level II in PT,MT,RT & UT,

LA ISO 9001-2015,

International Welding Engineer. 

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On Wed, Sep 18, 2019 at 4:45 PM K K <kara...@gmail.com> wrote:

Dear All,

Is there any restriction for material welding in position as per above mentioned code.

for one of our client is given comments for position for particular material.

For material S355JR#S355JR welding - Limited to F,H&V position. OH not allowed.

Please any one know in which clause they have mention we can't use  OH is not allowed.

Thanks and Regards

Kiran

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Re: [MW:30079] AWS D1.1

Dear Sir,

SMAW Process.

On Wednesday, September 18, 2019 at 6:59:50 PM UTC+5:30, kannayeram gnanapandithan wrote:

no, what is process going to be used

THANKS & BEST REGARDS,

KG.PANDITHAN, BE, IWE,  CSWIP 3.1,

ISO 9712 Level 2 in VT,

ASNT-Level II in PT,MT,RT & UT,

LA ISO 9001-2015,

International Welding Engineer. 

CONSULTANT-WELDING & QUALITY

Mobile no: +919940739349

On Wed, Sep 18, 2019 at 4:45 PM K K <kara...@gmail.com> wrote:

Dear All,

Is there any restriction for material welding in position as per above mentioned code.

for one of our client is given comments for position for particular material.

For material S355JR#S355JR welding - Limited to F,H&V position. OH not allowed.

Please any one know in which clause they have mention we can't use  OH is not allowed.

Thanks and Regards

Kiran

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[MW:30078] APPENDIX R OF ASME B31

Dear All.

in Appendix R of B 31.3 said that mentioned criteria is based on fracture mechanic without doing CTOD or considering of fracture property of material.how is it possible?because in similar standards that want to establish a acceptance criteria against workmanship need to be known this properties for each material.

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[MW:30076] Re: Simulation heat treatment as per code

Gents,

I simulation heat treatment required for material sample if the equipment not required impact test as per UCS-85 of ASME SEC VIII?

Thanks & RegardsMuhammed Ibrahim PK

On Wed, 18 Sep 2019 at 15:50, Muhammed Ibrahim PK <ibratech@gmail.com> wrote:

Gents, 

Is simulation heat treatment required for material as per latest ASME sec viii?.

Reg, 

Ibrahim

Virus-free. www.avast.com

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Re: [MW:30076] Simulation heat treatment as per code

You could be clearer about this

El mié., 18 sept. 2019 a las 8:29, Muhammed Ibrahim PK (<ibratech@gmail.com>) escribió:

Gents, 

Is simulation heat treatment required for material as per latest ASME sec viii?.

Reg, 

Ibrahim

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[MW:30072] Simulation heat treatment as per code

Gents, 

Is simulation heat treatment required for material as per latest ASME sec viii?.

Reg, 

Ibrahim

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Re: [MW:30072] AWS D1.1

There is no restriction as above for any particular material. Also S355JR is unlisted material as per AWS D1. 1

-------- Original Message --------
Subject: [MW:30071] AWS D1.1
From: K K
To: Materials & Welding
CC:

Dear All,

Is there any restriction for material welding in position as per above mentioned code.

for one of our client is given comments for position for particular material.

For material S355JR#S355JR welding - Limited to F,H&V position. OH not allowed.

Please any one know in which clause they have mention we can't use  OH is not allowed.

Thanks and Regards

Kiran

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Re: [MW:30072] Re: WPS

Thanks Muneeb for such detailed explanation.

But in this case if the design or ambient temperature doesn't demand for any impact test than this supplementary essential variable shall not be applicable.

and hence the shown WPS can be used for weld between A106 and 105.

Please correct me if I am wrong.

thanks

Atul Khatri

On Tue, Sep 17, 2019 at 5:06 PM sellu....@gmai.com <selwinjebadass@gmail.com> wrote:

Hi,

i agree with muneeb's comment.

thanks.

On Friday, 23 August 2019 09:48:59 UTC+5:30, tusc...@gmail.com wrote:

dear all,

can I use the attached WPS for A106 pipe and A105 pipe fittings?

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Re: [MW:30072] AWS D1.1

no, what is process going to be used

THANKS & BEST REGARDS,

KG.PANDITHAN, BE, IWE,  CSWIP 3.1,

ISO 9712 Level 2 in VT,

ASNT-Level II in PT,MT,RT & UT,

LA ISO 9001-2015,

International Welding Engineer. 

CONSULTANT-WELDING & QUALITY

Mobile no: +919940739349

On Wed, Sep 18, 2019 at 4:45 PM K K <karan.hbl@gmail.com> wrote:

Dear All,

Is there any restriction for material welding in position as per above mentioned code.

for one of our client is given comments for position for particular material.

For material S355JR#S355JR welding - Limited to F,H&V position. OH not allowed.

Please any one know in which clause they have mention we can't use  OH is not allowed.

Thanks and Regards

Kiran

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[MW:30071] AWS D1.1

Dear All,

Is there any restriction for material welding in position as per above mentioned code.

for one of our client is given comments for position for particular material.

For material S355JR#S355JR welding - Limited to F,H&V position. OH not allowed.

Please any one know in which clause they have mention we can't use  OH is not allowed.

Thanks and Regards

Kiran

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