Materials & Welding

Dear Experts Kindly clarify how to calculate the shielding gas consumption estimation for GMAW process. Pls give some examples. Thanks & Regards Selas -- 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 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. --- You received this message because you are subscribed to the Google Groups "Materials & Welding" group. To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com. For more opt...

dear all this second mail for you please answer me i want to guide. please i want to how do  special UT procedure inspection for small pipe diameter and high thickness and if you have procedure copy to guide me. the requirement of Client / Specification depend on ASME code because all piping work is high gas small bore up to  6" and thickness up to 11.3mm carbon steel and alloy steel P91 and P11.  regrades. On Mon, Nov 25, 2013 at 8:58 AM, Shipo shipo < shipo.ptj@gmail.com > wrote: dear P Govindan   thank you for answer and the requirement of Client / Specification depend on ASME code because all piping work is high gas small bore up to  6" and thickness up to 11.3mm carbon steel and alloy steel P91 and P11.  On Sun, Nov 24, 2013 at 5:03 PM, Perumal Govindan < perumalgovindan@gmail.com > wrote: Mr. Shipo, Find out the requirement of Client / Specification. Once known the Client requirement we may write a special UT procedure, after referring ...

if the fiber elongation exceeds the specified limit PWHT is required, since in your case vessel is subjected to PWHT, you need not worry about it as the dished along with entire vessel will be heat treated. On 30 November 2013 11:02, Pinaki Boxi < boxi.pinaki@gmail.com > wrote: Respected sir, Description of vessel:- 18097m length X 4.1m dia Shell course thickness :- 24mm  2:1 Elliptical Head thickness :- 28mm after forming it will be come 25mm Material :- SA516 Gr70 Service :- Air As per section VIII div-I UCS -79 reduction by cold forming the as rolled thickness is more than 10./. at any location where the extreme fiber elongation exceeds 5./. PWHT is required. But as per drawing it is on PWHT, i am really confused regarding forming of 2:1 Elliptical Head PHWT. So pls conformed me  2:1 Elliptical Head PHWT is required or not, if no so what base of section - VIII div-I it is not required, or PWHT is required what base of section - VIII div-I it is required, ...

Dear Experts Good day to you all. I m holding IWI basic and I believe that I will be eligible for IWI COMPREHENSIVE without going to seminar.so I will be having a test and an interview. And therefore I would like to get some course books for the same and prepare well. So if anyone have attended the course and having any course materials please help me by giving any material that you have. And give some ideas and important topics discussed in interview . Thanks n regards Raj Sent from Yahoo! Mail on Android -- 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 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 pu...

this type of weld repair procedure is called as stelliteing. Essential requirements: 1. WPS for same or equivalent grade of material.                                    2. A good welder qualified for welding especially insitu welding.                                    3. PQR For Vinod : i have experienced same issue for one of my repair project on an Marine Boiler Superheater Valve having same material composition of SA 217 WC6. You can use ECoCr-A welding electrode for welding (SFA - 5.13) PWHT depending upon thickness.   Cheers, Sharafat Dhanse. -- To post to this group, send email to materials-welding@google...

Dear Mr.Promodh, Sorry for this very late reply.ASTM A283D Maybe Equivalent for this EN S275JR. Kindly check and reply if it is right. Regards, Jawahar. On Saturday, July 23, 2011 3:16:35 PM UTC+3, PRAMODH NAIR wrote: Experts,   Could you please give me the equivalent ASTM material for EN S275JR with reference code document.   Regards Pramodh -- 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 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. --- You received this message because you are subscribed ...

Respected sir, Description of vessel:- 18097m length X 4.1m dia Shell course thickness :- 24mm  2:1 Elliptical Head thickness :- 28mm after forming it will be come 25mm Material :- SA516 Gr70 Service :- Air As per section VIII div-I UCS -79 reduction by cold forming the as rolled thickness is more than 10./. at any location where the extreme fiber elongation exceeds 5./. PWHT is required. But as per drawing it is on PWHT, i am really confused regarding forming of 2:1 Elliptical Head PHWT. So pls conformed me  2:1 Elliptical Head PHWT is required or not, if no so what base of section - VIII div-I it is not required, or PWHT is required what base of section - VIII div-I it is required,   -- Thanks & Regards Pinaki Boxi . Fujairah, AUE. -- 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 For more options, visit this group's bolg at http://materi...

Dear Kannayeram & Bathula,   Even did PQR and welder qualification for the same.   On Friday, November 29, 2013 3:00:17 PM UTC+3, kannayeram gnanapandithan wrote: Hope that this is not phosphor brone alloy then why u choose ER CuSn1, u should have choosen ERCu. As Bathula said, use Helium, preheat to around 400degree celsius, cover with glass wool area other than jonit to avoid dispation of heat.  On Fri, Nov 29, 2013 at 2:58 PM, Raghuram Bathula < raghura...@gmail.com > wrote: Use Helium as a shielding gas because, risk of oxide entrapment in the weld pool is greatly reduced and provides deeper penetration. Preheating of the base metal is typically required to maintain the base metal at welding temperatures without preheating, the high thermal conductivity of copper results in excessive loss of heat away from the weld zone. On 29 November 2013 14:46, Avis < avis...@gmail.com > wrote: Dear All,   Anybody having experience is co...

1. You can use compensatory block on thinner side for RT, ask your NDT contractor, he might arrange one. 2. CVN Impact specimen can be taken, did you check with the lab, why it can't be taken? On 29 November 2013 16:58, < Vijay.Tayade@akersolutions.com > wrote: Hi, Considering unequal wall thickness, 1.      Radiography control of welded joints will be possible to do? RT films will give too much exposure on the thinnest side, not enough exposure on the thickest side. Should Ultrasonic testing will remains as only options? 2.      Charpy V Testing of Welding Procedure Qualification can be possible? - specimen placement in the CAP FL at Thicker member (and FL+2 and FL+5) side and CAP WM. Please see attached sketches.   Any thoughts?   Best regards, Vijay Tayade Welding Engineer      From: materials-welding@googlegroups.com [mailto: materials-welding@googlegroups.com ] On Behalf Of sevak hiren Sent: Wednesday, September 1...

probably it can help you http://multimedia.3m.com/mws/mediawebserver?mwsId=66666UF6EVsSyXTtnXf2oxfcEVtQEVs6EVs6EVs6E666666--&fn=Green%2520Corps%2520Rigid%2520%2520Grinding.pdf On 29 November 2013 17:01, Richard robes < mech.processes@gmail.com > wrote: Gent's Issue has been going on regarding an ncr and colleagues commenting that there is no change in composition of CS and SS discs but no document related to it, can anyone attach a document proof regarding the issue. Regards Richard On Fri, Nov 29, 2013 at 12:44 PM, José Luís Ferreira < jluis.nf@gmail.com > wrote: considering the new discs, there is no problem of contamination, the problem of discs made to CS is that they are not suitable for the hardness and strenght of the SS, and thus becomes more expensive and less productive. On Nov 28, 2013 1:34 PM, "Richard robes" < mech.processes@gmail.com > wrote: Dear Gents, Please comment regarding the issue, What is...

The correction to these mistakes will appear as "errata" in the 2nd part of this article.   Thanks   Pradip Goswami, P.Eng,IWE Welding & Metallurgical Specialist Ontario, Canada pgoswami@quickclic.net pgoswami@sympatico.ca     From: pgoswami [mailto:pgoswami@quickclic.net] Sent: Friday, November 29, 2013 7:34 AM To: 'Raghuram Bathula'; 'Raghuram Bathula' Cc: 'materials-welding@googlegroups.com' Subject: FW: 19400] Duplex Stainless Steel: Metallurgy, engineering codes & welding practices Mr... Bathula,   Thanks for your appreciation.Although we took enough care to write a good article, some editorial mistakes in the paper did occur. Other than those this paper (a review article) should be worth reading and enjoying.   Regards.   Pradip Goswami, P.Eng,IWE Welding & Metallurgical Specialist Ontario, Canada pgoswami@quickclic.net pgoswami@sympatico.ca    ...

Mr... Bathula,   Thanks for your appreciation.Although we took enough care to write a good article, some editorial mistakes in the paper did occur. Other than those this paper (a review article) should be worth reading and enjoying.   Regards.   Pradip Goswami, P.Eng,IWE Welding & Metallurgical Specialist Ontario, Canada pgoswami@quickclic.net pgoswami@sympatico.ca     From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Raghuram Bathula Sent: Friday, November 29, 2013 3:52 AM To: Materials-Welding Subject: [MW:19400] Duplex Stainless Steel: Metallurgy, engineering codes & welding practices Congratulations Mr Pradip Goswami for the article in current issue of SSW Duplex Stainless Steels (DSS) are extremely high grade engineering alloys combining good corrosion resistance with high strength and ease of fabrication. These steels are frequently use...

Hope that this is not phosphor brone alloy then why u choose ER CuSn1, u should have choosen ERCu. As Bathula said, use Helium, preheat to around 400degree celsius, cover with glass wool area other than jonit to avoid dispation of heat.  On Fri, Nov 29, 2013 at 2:58 PM, Raghuram Bathula < raghurambathula@gmail.com > wrote: Use Helium as a shielding gas because, risk of oxide entrapment in the weld pool is greatly reduced and provides deeper penetration. Preheating of the base metal is typically required to maintain the base metal at welding temperatures without preheating, the high thermal conductivity of copper results in excessive loss of heat away from the weld zone. On 29 November 2013 14:46, Avis < aviss2000@gmail.com > wrote: Dear All,   Anybody having experience is copper welding.  If yes please share your difficultites, and also welder availablity for the welding.   The base materials is ASTM B42 UNS C12200 (Cu - 99.9%) P. No. is 31,...

Gent's Issue has been going on regarding an ncr and colleagues commenting that there is no change in composition of CS and SS discs but no document related to it, can anyone attach a document proof regarding the issue. Regards Richard On Fri, Nov 29, 2013 at 12:44 PM, José Luís Ferreira < jluis.nf@gmail.com > wrote: considering the new discs, there is no problem of contamination, the problem of discs made to CS is that they are not suitable for the hardness and strenght of the SS, and thus becomes more expensive and less productive. On Nov 28, 2013 1:34 PM, "Richard robes" < mech.processes@gmail.com > wrote: Dear Gents, Please comment regarding the issue, What is the composition of SS and CS Cutting & Grinding wheels? Is there any problem if we use Cutting wheel marked as for CS in SS Piping material? Is there any material that can cause contamination and rust in SS piping if we use CS cutting / grinding wheel? Regards Richard --...

Hi, Considering unequal wall thickness, 1.      Radiography control of welded joints will be possible to do? RT films will give too much exposure on the thinnest side, not enough exposure on the thickest side. Should Ultrasonic testing will remains as only options? 2.      Charpy V Testing of Welding Procedure Qualification can be possible? - specimen placement in the CAP FL at Thicker member (and FL+2 and FL+5) side and CAP WM. Please see attached sketches.   Any thoughts?   Best regards, Vijay Tayade Welding Engineer      From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of sevak hiren Sent: Wednesday, September 12, 2012 10:56 AM To: materials-welding@googlegroups.com Subject: Re: [MW:15278] Use of ASME IX WPS for Dissimilar Thickness of More than Range of Groove Weld Thickness Qualified?   Dear, Since this joint may be considered as single bevel groove weld joint (C...

Use Helium as a shielding gas because, risk of oxide entrapment in the weld pool is greatly reduced and provides deeper penetration. Preheating of the base metal is typically required to maintain the base metal at welding temperatures without preheating, the high thermal conductivity of copper results in excessive loss of heat away from the weld zone. On 29 November 2013 14:46, Avis < aviss2000@gmail.com > wrote: Dear All,   Anybody having experience is copper welding.  If yes please share your difficultites, and also welder availablity for the welding.   The base materials is ASTM B42 UNS C12200 (Cu - 99.9%) P. No. is 31, SFA  - A5.7, F. No. 31. Filler Wire Class - ER Cu Sn 1 With regards, S. Sivasubramanian, Kuwait. -- 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 For more options, visit this group's bolg at...

Dear All,   Anybody having experience is copper welding.  If yes please share your difficultites, and also welder availablity for the welding.   The base materials is ASTM B42 UNS C12200 (Cu - 99.9%) P. No. is 31, SFA  - A5.7, F. No. 31. Filler Wire Class - ER Cu Sn 1 With regards, S. Sivasubramanian, Kuwait. -- 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 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. --- You received this message because you are subscribed to the Google Groups...

Congratulations Mr Pradip Goswami for the article in current issue of SSW Duplex Stainless Steels (DSS) are extremely high grade engineering alloys combining good corrosion resistance with high strength and ease of fabrication. These steels are frequently used in the oil and gas industries both in upstream and downstream applications for assemblies such as pipe work systems, manifolds and risers. Furthermore, these are used in the petrochemical industry in the form of pipelines and pressure vessels. These steels are designed to provide better corrosion resistance, particularly chloride stress corrosion and chloride pitting corrosion, in addition to having a higher strength than standard austenitic stainless steels such as Type 304 or 316, enabling thinner sections to be used and providing significant cost benefits. By Ramesh Bapat, Senior Principal Engineer, Foster Wheeler Upstream & Pradip Goswami, P. Eng., IWE, Welding and Metallurgical Specialist - Ontario, Canada ...

considering the new discs, there is no problem of contamination, the problem of discs made to CS is that they are not suitable for the hardness and strenght of the SS, and thus becomes more expensive and less productive. On Nov 28, 2013 1:34 PM, "Richard robes" < mech.processes@gmail.com > wrote: Dear Gents, Please comment regarding the issue, What is the composition of SS and CS Cutting & Grinding wheels? Is there any problem if we use Cutting wheel marked as for CS in SS Piping material? Is there any material that can cause contamination and rust in SS piping if we use CS cutting / grinding wheel? Regards Richard -- 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 For more options, visit this group's bolg at http://materials-welding.blogspot.com/ http://www.linkedin.com/groups/MaterialsWelding-122787?home=&gid=122787...

CS grinding disc made of Silicon Carbide Si2C3 which prone to carbon contaminant  to SS, while SS disc made of Aluminium Oxide Al2O3 that no worry to carbon contaminant Regards, Yan From: hany alfy <hanyon_alfy@yahoo.com> Sender: materials-welding@googlegroups.com Date: Thu, 28 Nov 2013 08:52:18 -0800 (PST) To: materials-welding@googlegroups.com<materials-welding@googlegroups.com> ReplyTo: materials-welding@googlegroups.com Subject: Re: [MW:19396] Cutting & Grinding Disc Composition you have to use the Discs for SS for SS works otherwise it will be contaminated by carbon and starr rust The Difference is the same between CS and SS that is why the SS discs are expensive Regards, HA Sent from Yahoo Mail on Android From: ...

Dear Experts,   Can anybody help me out for solution annealing heating cycle, shocking time (thickness 3.4 mm) procedure pipe fittings of Duplex materials like USN 31303, UNS 32750, UNS 32205, it is not clearly mentioned as per the applicable ASTM / ASME Codes.   And similarly we are facing problem of carbon steel pipe fittings at the time of Normalizing at 910 Deg. C the big diameters and 14 mm thk. materials after the Normalizing process the fittings like elbow shapes are collapsing the diameter and diameter shape changing drastically.   In view of anybody can help me out for the Normalizing procedure for heating cycle & shocking time to eliminate this frequent problems.       D.Dattatreya            On Wednesday, January 9, 2013 3:49 PM, Ashish Pathrabe <darkash6633@gmail.com> wrote: Dear Amit,   Technically Virtuous :-...