Materials & Welding

During a hydrotest, localized tensile yielding around flaws results in compressive residual stresses upon depressurization.  These can persist during subsequent vessel operation at normal operating pressures.   From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Ali Asghari Sent: Saturday, May 30, 2009 10:37 PM To: materials-welding@googlegroups.com Subject: [MW:2285] hydro test   hi can every body answer two follwing questions? how hydro test increase the resistance to brittle fracture or failure by crack like flaw?do hydro test decrease residual stress?   regard advance. --~--~---------~--~----~------------~-------~--~----~ 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-we...

  May 31, 2009   Hi,   Indirectly the material is cold drawn very slightly during hydrotest at high pressure (90% - 95%SMYS) and becomes stronger. It also follows that there is reduction in the residual stress.   Good luck. PJA SAVE TREES  - THINK BEFORE YOU PRINT From: materials-welding@googlegroups.com [mailto: materials-welding@googlegroups.com ] On Behalf Of Shank Vagal Sent: Sunday, May 31, 2009 1:36 PM To: materials-welding@googlegroups.com Subject: [MW:2286] Re: hydro test   Ali. This is a very unusual query; hydrotest is an integrity test. All other things - where did you get them from? Rgds Shank --- On Sun, 31/5/09, Ali Asghari <asghariali@rocketmail.com> wrote: From: Ali Asghari <asghariali@rocketmail.com> Subject: [MW:2285] hydro test To: materials-welding@googlegroups.com Date: Sunday, 31 May, 2009, 9:07 AM hi can ever...

Puneet, Acceptance criteria for UT is as laid down between the purchaser and supplier, Usually a purchaser's design engineer looks in to it. A UT proc is avlbl in ASTM E 388 for heavy forgings.. But I doubt of acc criteria. It is application specific. Shashank  --- On Wed, 27/5/09, puneet takiar <puneet1takiar@yahoo.com> wrote: From: puneet takiar <puneet1takiar@yahoo.com> Subject: [MW:2253] Query To: materials-welding@googlegroups.com Date: Wednesday, 27 May, 2009, 8:29 PM Dear Sir, please suggest the ASME section VIIIclause for the acceptance criteria of UT of forgings of dia.. 200 to 800mm?. Material is En/Steel and alloy steel. What is ASME Level-II acceptance criteria?. Regards, Puneet       Cricket on your mind? Visit the ultimate cricket website.. Enter http://beta.cricket.yahoo.com Share files, take polls, and make new friends - all under one roof. Click here. --~--~---------~--~----~------------~-------~--~----~ To post to this group,...

dear shank i read a type for releasing residual stress is mechanical methods such as hydrotest and also in API RP 579,hydro test is used for increasing brittle resistance. rgd adv From: Shank Vagal <nach_sam@yahoo.com> To: materials-welding@googlegroups.com Sent: Sunday, May 31, 2009 3:05:43 PM Subject: [MW:2286] Re: hydro test Ali. This is a very unusual query; hydrotest is an integrity test. All other things - where did you get them from? Rgds Shank --- On Sun, 31/5/09, Ali Asghari <asghariali@rocketmail.com> wrote: From: Ali Asghari <asghariali@rocketmail.com> Subject: [MW:2285] hydro test To: materials-welding@googlegroups.com Date: Sunday, 31 May, 2009, 9:07 AM hi can every body answer two follwing questions? how hydro test increase the resistance to brittle fracture or failure by crack like flaw?do hydro test decrease residual stress?   regard advance. Cricket on your mind? Visit the ultimate cricket website. Enter now! --~...

Ali. This is a very unusual query; hydrotest is an integrity test. All other things - where did you get them from? Rgds Shank --- On Sun, 31/5/09, Ali Asghari <asghariali@rocketmail.com> wrote: From: Ali Asghari <asghariali@rocketmail.com> Subject: [MW:2285] hydro test To: materials-welding@googlegroups.com Date: Sunday, 31 May, 2009, 9:07 AM hi can every body answer two follwing questions? how hydro test increase the resistance to brittle fracture or failure by crack like flaw?do hydro test decrease residual stress?   regard advance. Cricket on your mind? Visit the ultimate cricket website. Enter now! --~--~---------~--~----~------------~-------~--~----~ 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/ The views expressed/exchnaged in th...

hi can every body answer two follwing questions? how hydro test increase the resistance to brittle fracture or failure by crack like flaw?do hydro test decrease residual stress?   regard advance. --~--~---------~--~----~------------~-------~--~----~ 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/ 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. -~----------~----~----~----~------~----~------~--~---

Dear Kevin, AWS -CWI certificate is valuable and really counts for overseas job as a welding Inspector in Middle east. In India its an advantage but as you know its not mandatory in India. As you are working with ABS, after passing AWS -CWI they can send you for offshore welding inspection jobs. In gulf, no doubt its valuable and the salary ranging from - 60K - 150K INR PM depending on your experience. After all getting yourself equipped with certifications and qualifications never be on loosing side. So go for it! best Luck. Regards, Nilesh On Fri, May 29, 2009 at 10:43 AM, Kevin Sanchala < ksanchala@gmail.com > wrote: Dear All,   Please let me know, i am gonna have AWS-CWI cerificate in August, i just wanna know whether AWS-CWI is valuable or not?   -- Regards, Kevin Sanchala ABS industrial Verification India Pvt. Ltd. Mob: +91-9725467645        +91-9979112969 -- Best Regards, Nilesh Pathare --~--~---------~--~----~------------~-------~--~----~ To post to this gro...

Hi You can braze in Furnace but it should be in Vaccume Furnace or Inert atmosphere   Hegde   From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of PREM SHANKARDUTT NAUTIYAL Sent: Thursday, May 28, 2009 9:32 PM To: mquiggs@gmail.com Cc: materials-welding@googlegroups.com Subject: [MW:2277] Re: Tungsten Carbide to Stainless Steel   Hi Can you try Furnace brazing with a silver alloyed or copper Shim. In the past we had successfully brazed a white cast iron to carbon steel by silver alloyed or copper shim by furnace brazing in inert atmosphere. Regards Prem Nautiyal Godrej, Mumbai On Thu, 28 May 2009 09:15:35 +0530 wrote > >I am trying to resistance weld Tungsten Carbide to 420 Stainless >Steel. Are there any coatings that can enhance the weldabilty of the >carbide to the stainless steel? Any heat treatings to the steel that >may help? Currently, it is about 48-52 HRc. We ...

Dear All,   Please let me know, i am gonna have AWS-CWI cerificate in August, i just wanna know whether AWS-CWI is valuable or not?   -- Regards, Kevin Sanchala ABS industrial Verification India Pvt. Ltd. Mob: +91-9725467645        +91-9979112969 --~--~---------~--~----~------------~-------~--~----~ 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/ 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. -~----------~----~----~----~------~----~------~--~---

Dear Sandeep Kumar, We can supply this grade of MIG wire. Please let us know the dia required. Shriniwas Deshpande Senior Sales Manager Bohler Welding Group India Pvt. Ltd. B-201 Universal Business Park, Chandivili Farm Road, Off Saki Vihar Road, Saki Naka, Mumbai 400 072. India Ph: +91-22-2857 4448, 2857 4458 Fax: +91-22-28574445 Mob: +91 9422331958 Email: shriniwas.deshpande@bwgindia.com Websites: www.bohlerweldinggroupindia.com A Böhler Welding Group Company --- On Thu, 5/28/09, sandy < sandy001987@gmail.com > wrote: > From: sandy < sandy001987@gmail.com > > Subject: [MW:2273] ER80S-B2 MIG wire supplir in INDIA > To: "Materials & Welding" < materials-welding@googlegroups.com > > Date: Thursday, May 28, 2009, 5:04 PM > > Hi everbody > > I want to buy ER80S-B2 MIG wire. > Can any body tell me about any supplier who can provide > this . > > Best Regards > Sandeep Kumar > > > > --~--~--------...

Dear Sir, D&H, Esab all having this filler wire. please go to their website and search for regional offices. Contact them for these electrodes Hareesh K V On 5/28/09, sandy < sandy001987@gmail.com > wrote: > > Hi everbody > > I want to buy ER80S-B2 MIG wire. > Can any body tell me about any supplier who can provide this . > > Best Regards > Sandeep Kumar > > > > --~--~---------~--~----~------------~-------~--~----~ 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/ 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. -~----------~----~----~----~------~----~------~--~---

Yes, The welders can be qualfied using P1 materail unless other essential variables are not Changed.   SB On Thu, May 28, 2009 at 7:14 AM, Shank Vagal < nach_sam@yahoo.com > wrote: WQT aims at judging welder's ability to deposit sound weld using a given electrode/filler and the qualified process per the WPS. The material on which to deposit does not matter. --- On Thu, 28/5/09, Sukamal Naskar < sukamalbecmet@gmail.com > wrote: From: Sukamal Naskar < sukamalbecmet@gmail.com > Subject: [MW:2265] Re: about WQT To: materials-welding@googlegroups.com Date: Thursday, 28 May, 2009, 10:44 AM According to QW-423.1 & QW-433, you can qualify the welder for P No. 1 material using F No.43 consumable. As long as your are not changing the process GTAW, the welder can be qualified , provided other essential variables of the GTAW process for the welder qualification doesn't change. Regards, SUKAMAL NASKAR WELDING ENGINEER On 5/28/09, Muhammed Ibrahim <...

Dear Sandeep Are you interested only indian manufactured or Any make would do ? Regards Suneel gore --- On Thu, 28/5/09, sandy <sandy001987@gmail.com> wrote: From: sandy <sandy001987@gmail.com> Subject: [MW:2273] ER80S-B2 MIG wire supplir in INDIA To: "Materials & Welding" <materials-welding@googlegroups.com> Date: Thursday, 28 May, 2009, 6:04 PM Hi everbody I want to buy ER80S-B2 MIG wire. Can any body tell me about any supplier who can provide this . Best Regards Sandeep Kumar Explore and discover exciting holidays and getaways with Yahoo! India Travel Click here! --~--~---------~--~----~------------~-------~--~----~ 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/ The views expressed/exchnaged in this group are members persone...

Hi Can you try Furnace brazing with a silver alloyed or copper Shim. In the past we had successfully brazed a white cast iron to carbon steel by silver alloyed or copper shim by furnace brazing in inert atmosphere. Regards Prem Nautiyal Godrej, Mumbai On Thu, 28 May 2009 09:15:35 +0530 wrote > >I am trying to resistance weld Tungsten Carbide to 420 Stainless >Steel. Are there any coatings that can enhance the weldabilty of the >carbide to the stainless steel? Any heat treatings to the steel that >may help? Currently, it is about 48-52 HRc. We have tried electroless >nickel on the carbide but would like to be stronger. Any thoughts >please, Thank you.. > >> > PREM S NAUTIYAL CELL : 9820313278 --~--~---------~--~----~------------~-------~--~----~ 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, ...

Dear Mr. H. Malekan,  I think you could use the electrode  OK 73.68 Massimo Gherardi QAManager - ESAB Saldatura SPA - Italy Da: sandy <sandy001987@gmail.com> A: Materials & Welding <materials-welding@googlegroups.com> Inviato: Giovedì 28 maggio 2009, 14:37:46 Oggetto: [MW:2274] Re: ESAB Dear Mr, H.Malekan Please give chemical  composition, strength, CVN of the material On May 27, 5:10 pm, Hamed Malekan < ham_male...@yahoo.com > wrote: > Can some body tell me which electrode in Esab brand suitable for welding                 EN10028-4 13MnNi6-3 ? Is that already used anywhere in the world or not ? > > H.Malekan --~--~---------~--~----~------------~-------~--~----~ 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...

Hi,   Regarding the foot note, Metallurgically, 0.01% of C equivalent to 0.06 % Mn ; that is why in all specification you could find this general comment.   So, if Mn increases to 1.36 % , there will be a definite reduction in Carbon percentage.   For, CE  = 0.47 , preheat 95 deg Cel is enough to get the good results,   As CE increases your weldability decreases, but you cannot directly relate the Mn to weldability.   Thanks & Regards,   K.Babu Singapore   On Wed, May 27, 2009 at 11:29 PM, PREM SHANKARDUTT NAUTIYAL < prem_nautiyal@rediffmail.com > wrote: Dear Sir Thanks for your valuable advice. However we have landed up in one more hurdle in same job discussed below. The SA105 forging is having Mn content on higher side i.e 1.19%. as against specification of 1.05% max. There is a footnote stating that as per --- Mn=1.36% max is also allowed. The Carbon content is 0.22%. Due to high Mn content the CE is 0.47. Now with such high CE should we preheat the join...

Dear Mr, H.Malekan Please give chemical composition, strength, CVN of the material On May 27, 5:10 pm, Hamed Malekan < ham_male...@yahoo.com > wrote: > Can some body tell me which electrode in Esab brand suitable for welding                 EN10028-4 13MnNi6-3 ? Is that already used anywhere in the world or not ? > > H.Malekan --~--~---------~--~----~------------~-------~--~----~ 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/ 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. -~----------~----~----~----~------~----~------~--~---

Hi everbody I want to buy ER80S-B2 MIG wire. Can any body tell me about any supplier who can provide this . Best Regards Sandeep Kumar --~--~---------~--~----~------------~-------~--~----~ 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/ 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. -~----------~----~----~----~------~----~------~--~---

Abhijit , Thanks for u r responce,it gives me lots of moral support & if u find any supporting stds.pl. mail me. Thanks & Regards, Prashant  --- On Thu, 28/5/09, abbey kangale <abhianu12@yahoo.com> wrote: From: abbey kangale <abhianu12@yahoo.com> Subject: [MW:2269] Re: Pl.Help. To: materials-welding@googlegroups.com Date: Thursday, 28 May, 2009, 3:48 PM Prashant   I am sorry to say ;their is no such ref standards available in Market which specify Quantum of Inspection Levels   At this stage you can issue Inspection reports for all valves mentioneing subject to Acceptance of selected Inspection Levels from your End User/Engineering Consultancey   You can issue Inspection report with all your observation and your Inspection Level assumptions but mention clearlycceptance by Client due to unavailbility of QAP/Inspection levels   I know this is regularly happens in India with TPI companies and they have to take thier o...

Dear Prasanth,   Eaht you have done is correct and in general most of the clients are asking for the same extent of testing.   Try to take out the extent of inspection from the P.O given to vendor or ask the vendor take a letter a letter from the purchser.   Infuture try to avoid such inspection with out approved QAP.   Regards   N.Nageswararao On Thu, May 28, 2009 at 1:11 PM, prashant pansare < prashantpan_99@yahoo.co.in > wrote: Dear all, I' ve inspected ball & NRV ( API 6D)  valves for xyz company.QAP was not available & client also not provided extent of check,but i inspected Hydro test 100% for body & 10% foe seat & released all the valves after satisfactory results. My firm wants clarification for Why i not done 100% testing for seat also? I' ve been warned,badly as i' ve carried out inspection without QAP & taken my own decision. Is there any specs. or std. to rsolve this matter? & if available pl.forward me,so t...

It depends of the agreement at the contract stage. Usually inspector witness is 10% but must guarantee that 100% valves were tested before witness.   Fernando Gameiro   From: materials-welding@googlegroups.com [mailto: materials-welding@googlegroups.com ] On Behalf Of prashant pansare Sent: quinta-feira, 28 de Maio de 2009 8:41 To: materials-welding@googlegroups.com Subject: [MW:2267] Pl.Help.   Dear all, I' ve inspected ball & NRV ( API 6D)  valves for xyz company.QAP was not available & client also not provided extent of check,but i inspected Hydro test 100% for body & 10% foe seat & released all the valves after satisfactory results. My firm wants clarification for Why i not done 100% testing for seat also? I' ve been warned,badly as i' ve carried out inspection without QAP & taken my own decision. Is there any specs. or std. to rsolve this ...

Prashant   I am sorry to say ;their is no such ref standards available in Market which specify Quantum of Inspection Levels   At this stage you can issue Inspection reports for all valves mentioneing subject to Acceptance of selected Inspection Levels from your End User/Engineering Consultancey   You can issue Inspection report with all your observation and your Inspection Level assumptions but mention clearlycceptance by Client due to unavailbility of QAP/Inspection levels   I know this is regularly happens in India with TPI companies and they have to take thier own judgement for their Inspection and isuue Inspection reports with conditional approval.and for that your management has to agree for same .   Abhijit   --- On Thu, 5/28/09, prashant pansare <prashantpan_99@yahoo.co.in> wrote: From: prashant pansare <prashantpan_99@yahoo.co.in> Subject: [MW:2267] Pl.Help. To: materials-welding@googlegroups.com Date: Thu...

Test should be 100% Body and seat but you can witness the test randomly it mean number of valve wise for example out of 100 valve you can witness the test 15 valves Body as well as Seat test.     On Thu, May 28, 2009 at 12:41 PM, prashant pansare < prashantpan_99@yahoo.co.in > wrote: Dear all, I' ve inspected ball & NRV ( API 6D)  valves for xyz company.QAP was not available & client also not provided extent of check,but i inspected Hydro test 100% for body & 10% foe seat & released all the valves after satisfactory results. My firm wants clarification for Why i not done 100% testing for seat also? I' ve been warned,badly as i' ve carried out inspection without QAP & taken my own decision. Is there any specs. or std. to rsolve this matter? & if available pl.forward me,so that i can responce immediately to avoid further action. Pl. help. Regards to all ...PRASHANT     Explore and discover exciting holidays and getaways w...

Dear all, I' ve inspected ball & NRV ( API 6D)  valves for xyz company.QAP was not available & client also not provided extent of check,but i inspected Hydro test 100% for body & 10% foe seat & released all the valves after satisfactory results. My firm wants clarification for Why i not done 100% testing for seat also? I' ve been warned,badly as i' ve carried out inspection without QAP & taken my own decision. Is there any specs. or std. to rsolve this matter? & if available pl.forward me,so that i can responce immediately to avoid further action. Pl. help. Regards to all ...PRASHANT     Explore and discover exciting holidays and getaways with Yahoo! India Travel Click here! --~--~---------~--~----~------------~-------~--~----~ 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...

WQT aims at judging welder's ability to deposit sound weld using a given electrode/filler and the qualified process per the WPS. The material on which to deposit does not matter. --- On Thu, 28/5/09, Sukamal Naskar <sukamalbecmet@gmail.com> wrote: From: Sukamal Naskar <sukamalbecmet@gmail.com> Subject: [MW:2265] Re: about WQT To: materials-welding@googlegroups.com Date: Thursday, 28 May, 2009, 10:44 AM According to QW-423.1 & QW-433, you can qualify the welder for P No. 1 material using F No.43 consumable. As long as your are not changing the process GTAW, the welder can be qualified , provided other essential variables of the GTAW process for the welder qualification doesn't change. Regards, SUKAMAL NASKAR WELDING ENGINEER On 5/28/09, Muhammed Ibrahim < ibratech@gmail.com > wrote: > You have to follow a WPS to qualify a welder.. Your WPS with P45 material > will not allow you to weld on P1 material. You have to qualify a Procedure > with P1 mat...

According to QW-423.1 & QW-433, you can qualify the welder for P No. 1 material using F No.43 consumable. As long as your are not changing the process GTAW, the welder can be qualified , provided other essential variables of the GTAW process for the welder qualification doesn't change. Regards, SUKAMAL NASKAR WELDING ENGINEER On 5/28/09, Muhammed Ibrahim < ibratech@gmail.com > wrote: > You have to follow a WPS to qualify a welder. Your WPS with P45 material > will not allow you to weld on P1 material. You have to qualify a Procedure > with P1 material with F43 consumable. With that procedure you can qualify > the welder. > > Regards, > Muhammed Ibrahim > > 2009/5/27 tamizazagan nagappan < tamizazagann@gmail.com > > >> >> >> I have wps for P45 material incoloy 825 UNS -08825, ASTM SB 462/464 UNS >> (N08020) NACE with filler metal F43 SFA 5.14 AWS Er-Ni-Cr-Mo-3... >> >> Is it possible to qualify th...

Definitely NOT POSSIBLE, Tamil! You should use the same material (P45) only for welder qualification also. The range can be applied from P41 through P49 (not P1) with F Number fixed Thanks Senthil On May 27, 5:30 pm, tamizazagan nagappan < tamizazag...@gmail.com > wrote: > I have wps for P45 material incoloy 825 UNS -08825, ASTM SB 462/464 UNS > (N08020) NACE with filler metal F43 SFA 5.14  AWS    Er-Ni-Cr-Mo-3... > > Is it possible to qualify the welder with A333 Gr 6 base metal  with filler > metal F43  SFA 5.14  AWS    Er-Ni-Cr-Mo-3... > > -- > TAMIL > phone: +77023210394 > > -- > TAMIL > phone: +77023210394 > >  Save a tree...please don't print this e-mail unless you really need > toRegards --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to materials-welding@googlegroups.com To unsubscribe from this group, send email to materials-welding...

Thank for your promptly respone and highly appreciated. Unfortunately i don't have B31 code case (181 and 2235). Any one can share with me?   On Thu, May 28, 2009 at 11:21 AM, BR < raghurambathula@gmail.com > wrote: assuming your design code is ASME B31.3 (else pl specify?) you can refer old postings on the group, we have lot of dicussion in the past on this subject. refer code case 181 "ASME B31 committee has developed B31 Case 181 to permit the use of UT, particularly TOFD in lieu of RT for B31.3 applications. ASME B31 case 181 was apparently taken from ASME Code Case 2235, which addresses the UT examination in lieu of RT for vessels and not piping. The major difference from what I can see between B31 case 181 and ASME Code Case 2235 is the minimum wall thickness requirements and maybe the acceptance criteria. As we all know ASME B&PV codes looks at flaws by aspect ratios. a/l or vertical height divided by length. That gives you the aspect ratio ...

Hi! For qualification ,you can qualify on 38mm thk plate.  And weld metal thk should be min 19mm for qualifying max thk for  the particular process . This PQR will qualify to weld partial penetration joint.   Regards   Hegde   From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of PREM SHANKARDUTT NAUTIYAL Sent: Wednesday, May 27, 2009 9:10 PM To: materials-welding@googlegroups.com Subject: [MW:2255] Partial Penetration Joints   Hi friends I need some advice from seniors. I need to qualify a procedure for a partial penetration joint as per ASME SecIX. The joint thickness is 56mm, single bevel butt joint. The depth of bevel is only 16mm and thus it is a partial penetration joint. Now to qualify the WPS/PQR, should i select a 38mm or more thick plate as per QW202.2(b) ?? The statements in QW202.2 are a bit confusing! Regards Prem Nautiyal Godrej, Mumbai. PREM S NAUTIYAL ...

since it is a grrove weld (doesn't matter partial or full penetration), to qualify basemetal (T) you should select 28mm atleast and weld only 8mm to qualify weld metal thickness (t) or full   On Wed, May 27, 2009 at 7:40 PM, PREM SHANKARDUTT NAUTIYAL < prem_nautiyal@rediffmail.com > wrote: Hi friends I need some advice from seniors. I need to qualify a procedure for a partial penetration joint as per ASME SecIX. The joint thickness is 56mm, single bevel butt joint. The depth of bevel is only 16mm and thus it is a partial penetration joint. Now to qualify the WPS/PQR, should i select a 38mm or more thick plate as per QW202.2(b) ?? The statements in QW202.2 are a bit confusing! Regards Prem Nautiyal Godrej, Mumbai. PREM S NAUTIYAL CELL : 9820313278 --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to materials-welding@googlegroups.com To unsubscribe from this group, send email to materials-welding-unsubscribe@googlegroups.co...

assuming your design code is ASME B31.3 (else pl specify?) you can refer old postings on the group, we have lot of dicussion in the past on this subject. refer code case 181 "ASME B31 committee has developed B31 Case 181 to permit the use of UT, particularly TOFD in lieu of RT for B31.3 applications. ASME B31 case 181 was apparently taken from ASME Code Case 2235, which addresses the UT examination in lieu of RT for vessels and not piping. The major difference from what I can see between B31 case 181 and ASME Code Case 2235 is the minimum wall thickness requirements and maybe the acceptance criteria. As we all know ASME B&PV codes looks at flaws by aspect ratios. a/l or vertical height divided by length. That gives you the aspect ratio which is then used to determine the maximum flaw size permitted. You can actually accept cracks per the ASME B&PV code as long as they are within the acceptable limits, but not with ASME B31.3. After looking at the acceptance criteria for B3...

Dear All members, I really need you expertise opinion on the above mentioned subject. Basically our project(new piping installation) requirement is RT but we having a lot of problems to do it. One of the major problem is the window which is very limited. To avoid any backlog i purpose to my boss to go for UT instead of RT. It is permissible by the code and standards to do UT instead of RT. Which code and standard we should refer?. Thank in advance for your kind cooperation --~--~---------~--~----~------------~-------~--~----~ 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/ 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. -~----...

I am trying to resistance weld Tungsten Carbide to 420 Stainless Steel. Are there any coatings that can enhance the weldabilty of the carbide to the stainless steel? Any heat treatings to the steel that may help? Currently, it is about 48-52 HRc. We have tried electroless nickel on the carbide but would like to be stronger. Any thoughts please, Thank you.. --~--~---------~--~----~------------~-------~--~----~ 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/ 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 have to follow a WPS to qualify a welder. Your WPS with P45 material will not allow you to weld on P1 material. You have to qualify a Procedure with P1 material with F43 consumable. With that procedure  you can qualify the welder.   Regards, Muhammed Ibrahim  2009/5/27 tamizazagan nagappan < tamizazagann@gmail.com > I have wps for P45 material incoloy 825 UNS -08825, ASTM SB 462/464 UNS (N08020) NACE with filler metal F43 SFA 5.14  AWS    Er-Ni-Cr-Mo-3... Is it possible to qualify the welder with A333 Gr 6 base metal  with filler metal F43  SFA 5.14  AWS    Er-Ni-Cr-Mo-3...      -- TAMIL phone: +77023210394   -- TAMIL phone: +77023210394  Save a tree...please don't print this e-mail unless you really need toRegards -- Thanks & Regards Muhammed Ibrahim PK --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to materials-welding@googlegroups.com To unsubscribe from this group, send email to materials-welding-unsubsc...

OK 73.68 should be usable. Claes Gillenius Development Engineer, MMA. (Spec. stainless and non Fe-alloys) Direct tel:  +46 (0)31 509315 Mobile +46 (0)707532012 Company                ESAB AB Address                  Box 8004, 402 77  Gothenburg, Sweden                                  Lindholmsallén 9 Company  reg number        556005-7738 Hamed Malekan <ham_malekan@yahoo.com> Sent by: materials-welding@googlegroups.com 2009-05-27 14:29 Please respond to materials-welding@googlegroups.com To materials-welding@googlegroups.com cc Subject [MW:2249] ESAB Can some body tell me which electrode in Esab brand suitable for welding                 EN10028-4 13MnNi6-3 ? Is that already used anywher...

Hi friends I need some advice from seniors. I need to qualify a procedure for a partial penetration joint as per ASME SecIX. The joint thickness is 56mm, single bevel butt joint. The depth of bevel is only 16mm and thus it is a partial penetration joint. Now to qualify the WPS/PQR, should i select a 38mm or more thick plate as per QW202.2(b) ?? The statements in QW202.2 are a bit confusing! Regards Prem Nautiyal Godrej, Mumbai. PREM S NAUTIYAL CELL : 9820313278 --~--~---------~--~----~------------~-------~--~----~ 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/ 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. -~--...

Dear Sir Thanks for your valuable advice. However we have landed up in one more hurdle in same job discussed below. The SA105 forging is having Mn content on higher side i.e 1.19%. as against specification of 1.05% max. There is a footnote stating that as per --- Mn=1.36% max is also allowed. The Carbon content is 0.22%. Due to high Mn content the CE is 0.47. Now with such high CE should we preheat the joint to the same temp. of 75DegreesC adviced by you ?? Will this high CE of 0.47 and high Mn content affect the weldability of CS#SS joint? Also as per ASME Sec VIII Div 1, Non-mandatory appendix R (R1 & R7), preheating is not required for this P1#P8 joint. But client is adamant and says that Non-Mandatory appendix should never be followed. Is this approach true. Client is telling that only Mandatory appendix should be followed !! Please advice ! Regards Prem Nautiyal Godrej, Mumbai. On Sat, 23 May 2009 12:42:19 +0530 wrote >My opinion is given below a...

Dear Sir, please suggest the ASME section VIIIclause for the acceptance criteria of UT of forgings of dia. 200 to 800mm?. Material is En/Steel and alloy steel. What is ASME Level-II acceptance criteria?. Regards, Puneet Cricket on your mind? Visit the ultimate cricket website. Enter http://beta.cricket.yahoo.com --~--~---------~--~----~------------~-------~--~----~ 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/ 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. -~----------~----~----~----~------~----~------~--~---