Materials & Welding

"> Please give some details regarding below, as anyone in the Group may provide solution to you. 1. Hardness Location (Weld & HAZ) 2. Type of Hardness Test, Vicker's, Brinell or Rebound Hardness Tester. 3. PWHT cycle, soaking temperature, Time, Heating Rate & Cooling Rate. 4. Welding Heat Input 5. Maximum temperature in The Tubes(steam) 6. Any additional details which you may feel may be useful. 380HB is way out of Rectification and let's seek experts advise. Thanks & Regards J.Gerald Jayakumar On Monday, 25 April, 2022, 11:49:16 am GMT+4, Chiranjeevi A <chiranjeevipuvvula@gmail.com> wrote: Dear james, Good morning,  Please find the below details, the following issue is related to the boiler steam drum tubes   Base Tube material: A213 T11   Obtained hardness value after PWHT : 380HB  ...

Pls provide some additional details. Hardness values obtained. Base Pipe/ PQR / Production Hardness Thanks & Regards J.Gerald Jayakumar On Monday, 25 April, 2022, 07:13:14 am GMT+4, Chiranjeevi A <chiranjeevipuvvula@gmail.com> wrote: Dear experts, We have an issue in the hardness value for P11 material of pipe. If the value exceeds what are the matigations required. Kindly advice Thanks and Regards chiranjeevi -- https://materials-welding.blogspot.com/ https://www.linkedin.com/groups/122787 --- 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 . To view this discussion on the web visit https:/...

Sometimes it is unavoidable that some Nozzle welds overlap Circum seam or Longitudinal seam, in that case the circum seam or Longitudinal weld seam shall be flush grinded and RT performed before welding and after successful RT results the Nozzle weld may be welded over flush grinded seam and perform necessary NDT after welding. I believe your question is Nozzle weld overlapping longitudinal seam. Thanks & Regards J.Gerald Jayakumar On Monday, 11 April, 2022, 08:54:50 am IST, prasad loke <prasadloke27@gmail.com> wrote: Dear experts ,  I need valuable guidance on following, Overlapping of circumferential weld joint over longitudinal weld joint in pressure nozzle is acceptable ?  If yes , then as per which reference standard and clause Thanks  Regards Prasad  On Mon, 4 Apr 2022, 9:11 am Ren...

since it is 6 pass, required On Tue, 5 Apr 2022 at 16:36, 'manohar matcha' via Materials & Welding < materials-welding@googlegroups.com > wrote: Please look into the attachment and advise that pwht is applicable for these channels as per API 660 clause 9.6.9 (a) or not? Both channels are belongs to one HE. Regards, Manohar. ClauseFrom: Raghuram Bathula < raghurambathula@gmail.com > Sent: Tue, 05 Apr 2022 15:37:49 To: Materials-Welding < materials-welding@googlegroups.com > Subject: Re: [MW:33030] channels and bonnets with six or more tube passes   it is from one end of HE to another end is consider as 1 pass (not individual channel)   On Tue, 5 Apr 2022 at 15:22, 'manohar matcha' via Materials & Welding < materials-welding@googlegroups.com > wrote: Dear Group Members, Please share your opinion/interpretation on API 660 Clause 9.6.9 (a)   Tube passes to be considered for individual channel or both channels (if Exchanger is having 2 cha...

Please look into the attachment and advise that pwht is applicable for these channels as per API 660 clause 9.6.9 (a) or not? Both channels are belongs to one HE. Regards, Manohar. ClauseFrom: Raghuram Bathula <raghurambathula@gmail.com> Sent: Tue, 05 Apr 2022 15:37:49 To: Materials-Welding <materials-welding@googlegroups.com> Subject: Re: [MW:33030] channels and bonnets with six or more tube passes   it is from one end of HE to another end is consider as 1 pass (not individual channel)   On Tue, 5 Apr 2022 at 15:22, 'manohar matcha' via Materials & Welding <materials-welding@googlegroups.com> wrote: Dear Group Members, Please share your opinion/interpretation on API 660 Clause 9.6.9 (a)   Tube passes to be considered for individual channel or both channels (if Exchanger is having 2 channels)?   in other words: Individual Channel passes to be considered or cumulative passes for both channels to be considered..? Regards, Manohar. ...

it is from one end of HE to another end is consider as 1 pass (not individual channel) On Tue, 5 Apr 2022 at 15:22, 'manohar matcha' via Materials & Welding < materials-welding@googlegroups.com > wrote: Dear Group Members, Please share your opinion/interpretation on API 660 Clause 9.6.9 (a)   Tube passes to be considered for individual channel or both channels (if Exchanger is having 2 channels)?   in other words: Individual Channel passes to be considered or cumulative passes for both channels to be considered..? Regards, Manohar.   -- -- https://materials-welding.blogspot.com/ https://www.linkedin.com/groups/122787 --- 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 . To view this discussion on the web visit https://groups.google.com/d/msgi...

Dear Group Members, Please share your opinion/interpretation on API 660 Clause 9.6.9 (a)   Tube passes to be considered for individual channel or both channels (if Exchanger is having 2 channels)?   in other words: Individual Channel passes to be considered or cumulative passes for both channels to be considered..? Regards, Manohar.   -- https://materials-welding.blogspot.com/ https://www.linkedin.com/groups/122787 --- 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 . To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/20220405091610.29414.qmail%40f5mail-224-114.rediffmail.com .

Hi, As per QG 108, Qualified WPS's are still valid and you use those WPS's for your welder qualification according to the qualidcation. QG-108 QUALIFICATIONS MADE TO PREVIOUS EDITIONS Joining procedures, procedure qualifications, and performance qualifications that were made in accordance with Editions and Addenda of this Section as far back as the 1962 Edition may be used in any construction for which the current Edition has been specified. Joining procedures, procedure qualifications, and performance qualifications that were made in accordance with Editions and Addenda of this Section prior to the 1962 Edition may be used in any construction for which the current Edition has been specified provided the requirements of the 1962 Edition or any later edition have been met. Procedure specifications, PQRs, and performance qualification records meeting the above requirements do not require amendment to include any variables required by later Editions and Addenda, except as specifie...

Hi. In your case YES. Group number is supplementary essential variable QW-403.5 Welding procedure specifications shall be qualified using one of the following: (a) the same base metal (including type or grade) to be used in production welding (b) for ferrous materials, a base metal listed in the same P‐Number Group Number in Table QW/QB-422 as the base metal to be used in production welding (c) for nonferrous materials, a base metal listed with the same P‐Number UNS Number in Table QW/QB-422 as the base metal to be used in production welding For ferrous materials in Table QW/QB-422, a procedure qualification shall be made for each P‐Number Group Number combination of base metals, even though procedure qualification tests have been made for each of the two base metals welded to itself. If, however, two or more qualification records have the same essential and supplementary essential variables, except that the base metals are assigned to different Group Numbers within the same P‐Number...

Hi, No. Group Number is a Supplementary essential variable. Thanks& Regards, (Karthik) Karthikeyan.S M: +66-892512282 On Monday, April 4, 2022, 04:25:20 PM GMT+7, Brijesh Maurya <brijeshmaurya492@gmail.com> wrote: Dear experts, I have query regarding QW-403.5 In my job, both impact & Pwht applicable. My query is, If I qualify PQR with P1G1 with P1G2, then will my WPS be qualified for P1G1 TO P1G2, P1G1 WITH P1G1 & P1G2 TO P1G2? Welding process: GTAW+SMAW & GTAW ( 2 PQR) Regards, Brijesh Maurya -- https://materials-welding.blogspot.com/ https://www.linkedin.com/groups/122787 --- 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 ma...

Hi, As per ASME Sec.IX - Non Mandatory Appendix- L - L100, If a welder qualified as per ISO 9606 also qualified for ASME Sec.IX. You should prepare Welder Qualification record as per ASME Sec.IX with actual values of qualification in ISO 9606. Please find the attached pages from ASME Sec.IX for your reference. L-100 INTRODUCTION When a welder or a welding operator welds a test coupon or makes a production weld, that person does not weld one way when the applicable standard is ASME and another way when the applicable standard is AWS, EN, JIS, or ISO. Recognizing this, recent revisions by ISO TC44, to ISO 9606-1, and ISO 14732 bring them much closer to the requirements of Section IX. This Appendix discusses what is necessary for an organization that is testing welders or welding operators under the above ISO standards to also certify that those welders and welding operators are qualified to Section IX. This Appendix is based on the requirements of ISO 9606-1:2012 and ISO 14732:2013. L-30...

Dear Experts, one welder is qualified as per ISO 9606, can he weld the job as per ASME B31.3 ?  As per project specification Welder qualification required as per ASME Sec-IX. Thanks & Regards Sangramkeshari Routaray Cswip3.1, NDT level-II (UT,RT,MT & PT) ISO Lead Auditor 9001:2015 MOB NO. +91-8249921885

how many passes are you welding. If it is more than one try FCAW for the 2nd pass as it would provide an scavenging action and forms light density slag of Al2O3 Thanks & Regards J.Gerald Jayakumar On Friday, 1 April, 2022, 05:16:43 pm IST, Anthony Dalisay <anthonydalisay6@gmail.com> wrote: I thought of doing the same too, however, it will cost me down time to remove the surface aluminium of all the items (about 40k pieces). You are correct that it is natural tendency for aluminium to oxidize when diffused with the weld arc, although this seems to be illusive, would changing the gas flow rate(to higher), welding progression(from pull to push) and angle of torch and contact tip to work distance (CTWD) will help eliminate the black soot? I have not tried those I mentioned yet except adjusting the CTWD to much closer di...

Sorry i mistook it to be aluminium alloy 7065. IN Aluminiumized sheets welded using carbon steel filler you can prevent black spots by removing aluminium  from the steel sheet in the area of welding  and avoid diffusion of Al into weld metal as Al as a naturally tendency to oxidize as Al2O3 Thanks & Regards J.Gerald Jayakumar On Friday, 1 April, 2022, 04:25:10 pm IST, Anthony Dalisay <anthonydalisay6@gmail.com> wrote: This is actually for motorcycle industry and the base material is not of any kind of pure aluminium series. It is an aluminized sheet welded by a robotic MIG using a normal carbon steel filler wire. With given parameters in the email thread. Regards, Anton On Fri, 1 Apr 2022 at 6:24 PM 'james gerald' via Materials & Welding < materials-welding@googlegroups.com > wrote: seem...