Materials & Welding

Did you pre heat this material @ 300f and hold during welding?              Regards Tony QA/QC Manager   From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of manpreet Sent: Sunday, March 30, 2014 10:26 PM To: materials-welding Subject: [MW:20439] Premature Root bend failure of dissimilar strength materials   Gents,   Please share thoughts on this subject:-   Mat A :- API 5L X70 Mat B :- ASTM A105N Process :- GMAW (STT)/FCAW Dia:- 600NB Thk :- 16.01mm for Pipe and 17.48 for Flange   Root bend Failure, Retests failed as well.   Regards. Get your own FREE website, FREE domain & FREE mobile app with Company email.   Know More > -- To post to this group, send email to materials-welding@googlegroups.com T...

hi, which was the filler wire?. position of coupen? parameter? sheilding or self shelding.? mohd. -- 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 options, visit https://groups.google.com/d/optout .

Its specified max. Value On Mar 31, 2014 3:34 AM, "Kostas Migiakis" < kmigiakis@gmail.com > wrote: is this the specified maximum value or the actual measured value during welding? On Sun, Mar 30, 2014 at 6:16 AM, Hrushikesh Sangamnerkar < hrushi612@gmail.com > wrote: Heat input max.is 1.5 On Mar 30, 2014 4:00 AM, "Kostas Migiakis" < kmigiakis@gmail.com > wrote: 100% Ar may be the reason of having high ferrite content on your welds. You need to add a γ-stabilizer element (such as Nitrogen) in your weld pool if you want to increase austenite amount in the microstructure.  Ar+2N is common for this welds. There are cases where Ar+5N has been used (but in these cases there is danger of porosity) By the other hand did you do strict control on Heat Input? What was the value of HI? Best Regards Dr. Kostas Migiakis Materials & Welding 29 Μαρ 2014, 14:45, ο/η Hrushikesh Sangamnerkar < hrushi612@gmail.com > έγραψε: ...

Gents, Please share thoughts on this subject:- Mat A :- API 5L X70 Mat B :- ASTM A105N Process :- GMAW (STT)/FCAW Dia:- 600NB Thk :- 16.01mm for Pipe and 17.48 for Flange Root bend Failure, Retests failed as well. Regards. Get your own FREE website, FREE domain & FREE mobile app with Company email.   Know More > -- 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 ...

  1)       Does D1.1 restrict usage of 1" pipe for PQR qualification? 2)       Does D1.1 restrict usage of full section tensile specimen? Clause 4.9.3.4 tells about the reduced section tensile specimen only &  Fig 4.14, they giving the specimen size details for 2",3",6" & 8" & above only. Does it mean we are not allowed to choose 1" for PQR qualification? I've checked in D1.1 interpretations also I cannot able to find. If anyone have the details please share. Ragards dhamu +974-7736 7260

dear friends is there any university or institute providing M.Tech metallurgy by distance education? thanks and regards rajaram.c -- 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 options, visit https://grou...

Hi Hrushikesh ,   SUS 329J4L(Nearest UNS 32506) is relatively an uncommon SDSS. Only the manufacturer and a few other handful suppliers will be versed with it. Due to higher contents of Cr and W (if used in the heat ), both of which are strong ferritizers, this steel will have more tendency to form more ferrite in the weld metal.   The ideal SMAW consumable & GTAW filler metal  for welding such steel would be E/ER-2593 or 2594. The product used by your organization, Weld TIG 329J4L conforms to ER 2594 specification.   Welding precautions for this steel, including heat input control, interpass control should be similar to the other DSS and SDSS. Amongst  Indian welding consumable manufacturers D&H seems to manufacture matching product for this steel.   There's nothing wrong in using 2% Nitrogen in shielding gas.This is an universal practice to compensate for the Nitrogen loss from the weld metal durin...

is this the specified maximum value or the actual measured value during welding? On Sun, Mar 30, 2014 at 6:16 AM, Hrushikesh Sangamnerkar < hrushi612@gmail.com > wrote: Heat input max.is 1.5 On Mar 30, 2014 4:00 AM, "Kostas Migiakis" < kmigiakis@gmail.com > wrote: 100% Ar may be the reason of having high ferrite content on your welds. You need to add a γ-stabilizer element (such as Nitrogen) in your weld pool if you want to increase austenite amount in the microstructure.  Ar+2N is common for this welds. There are cases where Ar+5N has been used (but in these cases there is danger of porosity) By the other hand did you do strict control on Heat Input? What was the value of HI? Best Regards Dr. Kostas Migiakis Materials & Welding 29 Μαρ 2014, 14:45, ο/η Hrushikesh Sangamnerkar < hrushi612@gmail.com > έγραψε: Pure Argon is to be used for this material. We had asked for Ar+2%N mixture but customer had rejected. On Mar 29, 2014 5:27 P...

  Dear Sir ,   Please find the below , this may help you.       P92 CONSUMABLES Alloy type 9%Cr steel alloyed with W, Mo, V, Nb, and N for high temperature creep resistance. Materials to be welded ASTM A 213 T92 (seamless tubes) A 335 P92 (seamless pipes) A 387 Gr 92 (plates) A 182 F92 (forgings) A 369 FP92 (forged & bored pipe) EN X10CrWMoVNb 9-2 Applications These consumables are designed to weld equivalent 'type 92' 9%Cr steels modified with tungsten, vanadium, niobium, nitrogen and a small addition boron to give improved long term creep properties. They are specifically intended for high integrity structural service at elevated temperature so the minor alloy additions responsible for its creep strength are kept above theminimum considered necessary to ensure satisfactory performance. In practice, weldments will be weakest in the softened (intercritical) HAZ region of parentmaterial, as indicated by so-calle...