Materials & Welding

Dear all, Inter pass and heat input should be controlled at any material welding but my question is how reduce welding stress in the stainless steel weld joints. On Tuesday, May 27, 2014 4:12:42 PM UTC+5:30, Ghafor Mohamad wrote: Control the interpass and heat input Thanks Ghafor Mohamad SQE Alstom On May 27, 2014 10:42 AM, "Raneesh.PK" < pkra...@gmail.com > wrote: Dear all As we know very well pwht is restricted for stainless steel   weld joint due to formation of chromium carbide(Senzitaion) My question is how to reduce the weld stress of  stainless steel weld joint.  Regards, RANEESH.PK                -- To post to this group, send email to material...@ googlegroups.com To unsubscribe from this group, send email to materials-weld...@ googlegroups.com For more options, visit this group's bolg at http://materials-welding. blogspot.com/ http://www.linkedin.com/ groups/MaterialsWelding- 1227...

Dear Sir Kindly clarify the fundamental differences between IBR and Non-IBR pipe and fittings in terms of the following paramters enlisted below - Manufacturing parameters - Metallurgical differences - Any NDT Test specified for IBR Line - Design differences Warm Regards Arunabh Engineers India Limited -- 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...

Hello Jignesh,   This is the correct table follow (Ref RP-582-2009).ER 320LR is the default welding consumable for welding alloy-20.   Alloy-20 is no different than any other Higher grade or super austenitic stainless steels, hence weldability issues could be similar.   Thanks.   Pradip Goswami, P.Eng,IWE Welding & Metallurgical Specialist Ontario, Canada pgoswami@quickclic.net pradip.goswami@gmail.com pradip_goswami@yahoo.ca   El Miércoles, 28 de mayo, 2014 7:27 A.M., Jignesh Desai <jignesh.desai.met@gmail.com> escribió: Can some one share his/her experience for the welding of SB463 UNS 08020? i.e. for welding of butt welds what shall be consumables? As per API 582 Table B2- ER 320LR for overlay on CS/LAS & as per ASME Sec IIC, SFA 5.11/5.14 ERNi Cr Mo-18. Regds/Jignesh -- To post to this group, send email to materials-welding@googlegroups.com To unsubscrib...

increase ur flow rate THANKS & BEST REGARDS KG.PANDITHAN, AWS-CWI, CSWIP 3.1 CONSULTANT-WELDING & QUALITY On Wed, May 28, 2014 at 11:38 PM, Maulik < mlkthakkar2@gmail.com > wrote: Dear experts, Please guide me regarding following query: We are leading fabricator of Al light weight vessels utilizing GMAW-P process. However, we found extensive porosity problems in most of times during 2G and 4G positional welding only when utilizing 99.995% Ar as a shielding gas. In 3G and 1G position seam is getting clear with no indication. We are also using He+Ar as a shielding gas & level of porosity drastically decrease due very known technical reason " getting hot arc welding". However due to some constraints for short span of time, we are not able to utilize He+Ar for all seams & have to use Ar as shielding gas. In view if above please suggest how to effectively utilize Ar shielding gas without RT failure, particular to welding in 2G and 4G position...

Thank you Pradip Sir Thank you so much for your valuable advice. would definately bring in notic to the EIL Standard Development group. Kindly clarify one more doubt, as we know that P-91 is poor to weld corrosion, what could be the possible corrosion and failure mechanism if we use ER 309 and how usage of ER NiCr3 helps Warm Regards Arunabh  On Tuesday, May 27, 2014 4:42:10 PM UTC+5:30, ARUNABH BERA wrote: Dear All Kindly clarify the doubts: Sir in Ethylene Cracker Furnace at one of the Petrochemical Plant, we have a hook-up between P-91 and SS304H. Here we are using ER309 as the filler. Is it acceptable, if not what can be the probable problems associated with the filler selection and what are the solutions  Regards Arunabh Engineers India Limited -- 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 ...

Hi Arunabh,   EIL definitely has access to API documents. API TR 938-B(2008) -is on Use of9Cr-1Mo-V steel for refining and petrochemical applications.   Below are the recommended practices on performing dissimilar welds between grade-91 and austenitic stainless steel.   The ideal consumable would be Inconel-82/182 (E-NiCr-Fe3) or Inco weld-A type.The latest development  for such dissimilar welds is EPRI-Program 87, welding consumable manufactured by Metrode.   E/ER-309 type welding consumable is certainly outdated.You may bring this to the notice of EIL Standard developments group.   Hope this info would be of help.   Thanks   Pradip Goswami, P.Eng,IWE Welding & Metallurgical Specialist Ontario, Canada pgoswami@quickclic.net pradip.goswami@gmail.com pradip_goswami@yahoo.ca   6.4.8.2 Joining to Stainless Steel Transition pieces or multiple buttering/PWHT operations ma...

Dear experts, Please guide me regarding following query: We are leading fabricator of Al light weight vessels utilizing GMAW-P process. However, we found extensive porosity problems in most of times during 2G and 4G positional welding only when utilizing 99.995% Ar as a shielding gas. In 3G and 1G position seam is getting clear with no indication. We are also using He+Ar as a shielding gas & level of porosity drastically decrease due very known technical reason " getting hot arc welding". However due to some constraints for short span of time, we are not able to utilize He+Ar for all seams & have to use Ar as shielding gas. In view if above please suggest how to effectively utilize Ar shielding gas without RT failure, particular to welding in 2G and 4G positions. Base Metal: AA5083 Filler Wire: ER5183 Thickness: 4 mm Process: GMAW-P Shielding Gas: 99.995% Ar with moisture content <2 ppm. WPS parameters I-90-120 AMP (2G position) V-18-19 V Travel Speed-350-450 mm/...