Materials & Welding

AC GTAW with water cooled torch & HF unit Thanks & Regards may be suitable for sheet metal. J.Gerald Jayakumar 0091-8838619635 On Thursday, 31 March, 2022, 04:16:04 pm IST, Prem Nautiyal <prem.nautiyal26@gmail.com> wrote: Hi Anthony  You may please try with 99.9995% Ultra Pure Argon gas. Use a gas cup size of 20#. Use the forehand technique in MIG. MIG always works with DC, for GTAW you should go with AC. Use a better quality branded filler wire spool. Regards  Prem Nautiyal  Welding & NDT Specialist  Cell 9769316004 On Thu, 31 Mar 2022, 15:36 'james gerald' via Materials & Welding, < materials-welding@googlegroups.com > wrote: Try AC current Thanks & Regards J.Gerald Jayakumar ...

Hi Anthony  You may please try with 99.9995% Ultra Pure Argon gas. Use a gas cup size of 20#. Use the forehand technique in MIG. MIG always works with DC, for GTAW you should go with AC. Use a better quality branded filler wire spool. Regards  Prem Nautiyal  Welding & NDT Specialist  Cell 9769316004 On Thu, 31 Mar 2022, 15:36 'james gerald' via Materials & Welding, < materials-welding@googlegroups.com > wrote: Try AC current Thanks & Regards J.Gerald Jayakumar On Thursday, 31 March, 2022, 01:03:59 pm IST, Anthony Dalisay < anthonydalisay6@gmail.com > wrote: Dear experts, We have been welding aluminized sheet using MIG welder with the following parameters: Amps: 125 Volts: 29.5 TS: 50cm/min Gas flow rate: 12L/min Gas type : 18%CO2 and 82%Ar However, I cant get rid of black soot (smoke)...

Please correct it as 2000ppm Thanks & Regards J.Gerald Jayakumar On Monday, 28 March, 2022, 09:55:17 am GMT+4, james gerald <gerry_tup@yahoo.com> wrote: 1% is 10000 ppm and it must be 20ppm, please check Thanks & Regards J.Gerald Jayakumar On Monday, 28 March, 2022, 07:14:50 am GMT+4, Muhammed Ibrahim PK <ibratech@gmail.com> wrote: Gents, Is there any conversion available for ppm to mg/m2? For Aramco projects, the chloride content measured in ppm using bresle patch kit in ppm. As per Aramco spec the acceptable range is 20mg/m2. Couldn't find the conversion. If anybody can advice, it will ne highly appreciated Reg, Ibrahim --...

1% is 10000 ppm and it must be 20ppm, please check Thanks & Regards J.Gerald Jayakumar On Monday, 28 March, 2022, 07:14:50 am GMT+4, Muhammed Ibrahim PK <ibratech@gmail.com> wrote: Gents, Is there any conversion available for ppm to mg/m2? For Aramco projects, the chloride content measured in ppm using bresle patch kit in ppm. As per Aramco spec the acceptable range is 20mg/m2. Couldn't find the conversion. If anybody can advice, it will ne highly appreciated Reg, Ibrahim -- 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...

I suppose except Manway, all blind flanges are temporary and it comes with a trunion attachment Thanks & Regards J.Gerald Jayakumar On Monday, 28 March, 2022, 07:15:06 am GMT+4, Balakrishnan Srinivasan <sbkay333@gmail.com> wrote: Check the MTC of the blind flange, if it fulfills the requirement of sour service/ NACE, it might have been normalized at the fabrication shop. Then no need for PWHT as of best of understanding. Warm Regards, Balakrishnan S On Mon, Feb 28, 2022 at 2:20 PM Gerry Lourens < Gerry.Lourens@newage-eng.com > wrote: No Welding thus PWHT not required  Kind Regards Gerry lourens Regards, ...

Agreed the PWHT is done for welding, however it is good engineering practice to have all part of equipment undergoing same heat treatment for uniform micro structure across all parts especially very good to practice this for equipment having NACE & sour service. Even blind flange will come in contact with service fluid during process. Discussed this case with many AI & all have same opinion, however do not find any code restrictions.  Also to be noted, we do local SR for some weld due to various reason. On Mon, Feb 28, 2022, 14:20 Gerry Lourens < Gerry.Lourens@newage-eng.com > wrote: No Welding thus PWHT not required  Kind Regards Gerry lourens Regards,     ...

Inquiry : May SA 240 Gr.316LN be used in Sec.VIII Div.1 since it is specified as "NP (NOT PERMITTED)" under Sec.IID. does this mean all the materials which are not listed in UHA 23 are categorised as NP in Sec IID, should be regularised or used thro code case only? -- 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/CADxVubn1wvmFuhLXQyzCUeASBP9uhOj_afc87rRJCsQGbjARxA%40mail.gmail.com .

Pls also add Test temperature Thanks & Regards J.Gerald Jayakumar On Monday, 21 March, 2022, 07:50:54 am GMT+4, 'james gerald' via Materials & Welding <materials-welding@googlegroups.com> wrote: Please provide details like Grade Type of corrosion test like ASTM G48 method A Shielding and purging gas corrosion test failure due to weight loss or pitting Welding consumable Oxygen purity maintained in the purge gas Thanks & Regards J.Gerald Jayakumar On Monday, 21 March, 2022, 07:21:40 am GMT+4, PK M <pkmqaqc@gmail.com> wrote: Dear Experts,   We have recently failed the super duplex PQR for corrosion test. So please...

Please provide details like Grade Type of corrosion test like ASTM G48 method A Shielding and purging gas corrosion test failure due to weight loss or pitting Welding consumable Oxygen purity maintained in the purge gas Thanks & Regards J.Gerald Jayakumar On Monday, 21 March, 2022, 07:21:40 am GMT+4, PK M <pkmqaqc@gmail.com> wrote: Dear Experts,   We have recently failed the super duplex PQR for corrosion test. So please suggest how to successfully super duplex PQR with a corrosion test. Any prevention for corrosion test or all other tests for Super Duplex stainless steel. Thank you. Pk -- https://materials-welding.blogspot.com/ https://www.linkedin.com/groups/122787 --- You received this message because you are subscribed to the Google Groups "Materials & W...

Please provide below information. 1. Applicable code like API 620 or 650 etc.. 2. Location like clean out door etc.. 3. Material Thanks & Regards J.Gerald Jayakumar On Thursday, 10 March, 2022, 08:26:12 am GMT+4, Rajesh Babu Pendyala <pendyala1979@gmail.com> wrote: Dear Friends  I need info about Fillet welding requirements in Tank 24" x12MM machined flanges with 17.48mm Nozzle pipe welding and nozzle Pipe will insert up to 6mm in flange. What are the welding requirements.  Refer attached drawing. Can any one advice please. Regards  Rajesh Babu  Inspection Engineer For Tank Maintenance Project  -- https://materials-welding.blogspot.com/ https://www.linkedin.com/groups/122787 --- You received this message because you are subscribed to the Google Groups "Materials ...

You should do lpt On Wed, 9 Mar 2022, 1:34 pm SN, < suryawanshinileshj@gmail.com > wrote: Dear experts, Could  you please confirm that can we do MPT after  chromium carbide Coating. Since chromium  carbide Coating is suppose to be nonmagnetic. Can anyone confirm  that chromium carbide Coating is magnetic or Non Magnetic.. Thanks  -- 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/CALi4c7OH_hUGjCE6_po8SYPADwcxOepy0W9-EgAKFhxX%2BXMQyg%40mail.gmail.com . -- https://materials-welding.blogspot.com/ https://www.linkedin.com/groups/122787 --- You received this message because y...

Hi Some basic information on this alloy is  provided here. If the alloy is of Grade 1 type,  meeting the nominal UTS with ER-NiCr-Mo3 filler and matching SMAW electrodes may be difficult . This would NOT be an issue if the alloy is changed to Type 2,(Solution Annealed ) variety. Pleas find the relevant information as attached.   At the first place, I would like to know, what's the rationale behind choosing Type-1 alloy(Annealed) , strength/weight reduction? Response would be appreciated.   Thanks.     P.Goswami.P.Eng, IWE. Independent  & Consulting Welding & Metallurgical Specialist Cell/Whasapp- 1-905-979-3232 India( Mobile) Till 10th April- 91-8981917949   From: materials-welding@googlegroups.com <materials-welding@googlegroups.com> On Behalf Of TDK YOKESH Sent: March 8, 2022 6:11 PM To: materials-welding@googlegroups.com Subject: Re: [MW:32958] Inconel 6625 Gr1 - PQR tensile requirements   Hi Balakriahnan,    I do have the sam...

Hi Balakriahnan,  I do have the same concern with Gr. 1 of UNS 6625 when welded with ERNiCrMo3 Kindly do reconfirm of grade again (Gr. 1 or Gr. 2) . Did you check if the filler mamufacturer can retest the tensile properties and provide the as welded values? 785Mpa  which is 95% of 827Mpa will suffice thd requirment.  We do all weld tensile test for every batch we receive.  I hope the expert in this forum can guidw us to sort this out.  On Tue, Mar 8, 2022, 9:15 AM Balakrishnan Srinivasan < sbkay333@gmail.com > wrote: Dear Experts, Greetings for the day!! I want to quality PQR for Base material UNS N06625 GR1 which has tensile property 827Mpa,   ERNiCrMo-3 Fillerwire was selected based on API582 & ASME sec II C recommendations. The filler wire tensile value is 760Mpa.  In PQR tensile test result lies in between 760-827 Mpa.  The obtained tensile value is not greater than the base metal.   It can't fulfill the requirement of  QW-153 (ASME SEC IX). As stated above clause QW1...

MDMT is taken in a Totality the lowest temperature attained either due to Environment, Service temperature, upset conditions etc.. Thanks & Regards J.Gerald Jayakumar On Thursday, 3 March, 2022, 12:33:14 pm GMT+4, SN <suryawanshinileshj@gmail.com> wrote: Dear all, Can you please explain  What is the difference between MDMT and LST Is MDMT(Minimum Metal Design Temperature ) and LST(Lowest Service Temperature) is same. This concept is applicable  the exemption of Impact test requirements  as per UCS 66 and section III NF Kindly clarify Thanks. -- 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 rece...

Yes you do Στις Σάβ 26 Φεβ 2022 στις 6:08 π.μ., ο/η Brijesh Maurya < brijeshmaurya492@gmail.com > έγραψε: Dear All, I have PQR of GTAW + SMAW process for P1G2 to P1G2 (SA516 GR.70 to SA516 GR.70) PQR Plate thickness = 10 mm GTAW welded = 4 mm SMAW welded = 6 mm WPS range qualified = 1.5 to 20 mm. Now, My query is, can i use this WPS for WPQ by GTAW process only? I want to qualify my welder on 1/2"NB X SCH 160 (4.78 THK) pipe with only GTAW process using this WPS. Kindly Clarify Experts........ 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 materials-welding+unsubscribe@googlegroups.com . To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/CAOBi_eMeAVHXjg29U...

It is not required if code of construction and client specification doesnt write it anywere... no need of that On Wed, 2 Mar 2022, 7:17 am anthony chundal, < anthony.chundal@gmail.com > wrote: It is required for service requirements, even though there is no welding On Mon, 28 Feb 2022, 12:33 Muhammed Ibrahim PK, < ibratech@gmail.com > wrote: Gentlemen, Please advice PWHT required or not for small blind flanges also if the vessel is in sour service.The blinds having no welding on it. As per my understanding PWHT is only for weld, not for base metal. If welding on blinds like davit, manway handle can be justified. Is it required for other blinds not having any weld on it. Experts please provide your view on it. Reg, Ibrahim -- 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 ...

It is required for service requirements, even though there is no welding On Mon, 28 Feb 2022, 12:33 Muhammed Ibrahim PK, < ibratech@gmail.com > wrote: Gentlemen, Please advice PWHT required or not for small blind flanges also if the vessel is in sour service.The blinds having no welding on it. As per my understanding PWHT is only for weld, not for base metal. If welding on blinds like davit, manway handle can be justified. Is it required for other blinds not having any weld on it. Experts please provide your view on it. Reg, Ibrahim -- 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/CALOPgm...