Materials & Welding

Replica will give macrostrure, not micro Best Regards, Shashank C Vagal On Sunday, 30 September, 2018, 12:30:08 PM IST, pradip kumar Sil <pradipsil@gmail.com> wrote: Go for replica test On Sun, 30 Sep 2018, 11:44 Ali Asghari, < asgharialigl@gmail.com > wrote: Dear All. Does anybody know how it is possible to evaluate the bainite or martensite of the base metal is tempered or not? I want to know the method , frequency of testing, acceptance( such as figures) and any other issues that can say with confidently we have tempered micro structure or not? as you know this is more crucial in sour service and is a requirement in our specification but doesn't mention detail of it. Regards. -- https://materials-welding.blogspot.com/ https://www.linkedin.com/groups/122787 --- You received th...

What is the proper way to calculate a welder's travel speed? please answer this question according to your experience. -- 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 . Visit this group at https://groups.google.com/group/materials-welding . For more options, visit https://groups.google.com/d/optout .

Go for replica test On Sun, 30 Sep 2018, 11:44 Ali Asghari, < asgharialigl@gmail.com > wrote: Dear All. Does anybody know how it is possible to evaluate the bainite or martensite of the base metal is tempered or not? I want to know the method , frequency of testing, acceptance( such as figures) and any other issues that can say with confidently we have tempered micro structure or not? as you know this is more crucial in sour service and is a requirement in our specification but doesn't mention detail of it. Regards. -- 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 . Visit this group at https://groups.google.com/group/materials-welding . For more options, visit https://groups....

Dear All. Does anybody know how it is possible to evaluate the bainite or martensite of the base metal is tempered or not? I want to know the method , frequency of testing, acceptance( such as figures) and any other issues that can say with confidently we have tempered micro structure or not? as you know this is more crucial in sour service and is a requirement in our specification but doesn't mention detail of it. Regards. -- 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 . Visit this group at https://groups.google.com/group/materials-welding . For more options, visit https://groups.google.com/d/optout .

Dear sir,  My work shop is in Kerala, India.  The interesting thing is that the vapours are seen even in afternoon (Humidity may be >65%). After the weld got cooled, the surface of the joint is like somebody poured water on the joint. This is visible in SS only.This water vapours are not making any issue in Weld joint.  I will share the photos latter.  Is it related to heat conductivity of SS? Is it related to flux as commented by a member of this group ? if so which component/metal contained in flux?  Thank you all for the replay.  Regards,  Hareesh K V On Fri, Sep 28, 2018, 7:59 PM PGoswami < pgoswami@quickclic.net > wrote: Hi, This is a case of moisture condensation. It's possible if the relative humidity(RH) factor is high, typically above 60% or more. In Indian subcontinent after the Monsoon RH could be very high contributing to this. Where's the location of your plant? Do you have any humidity control in the shop floor?, it may help. Stainless steel does not requ...

Hi I also experienced the same but my observation is perticularly in night shift where welders are not particular about removing and cleaning the slag from welded joint and remains till morning Such practices causing moisture accumulation in the visinity of such jt Therefore We had made mandatory to clean the weld joint free of slag Which has given us good results Regards Hegde Sent from Yahoo Mail on Android On Fri, 28 Sep 2018 at 19:59, PGoswami <pgoswami@quickclic.net> wrote: Hi, This is a case of moisture condensation. It's possible if the relative humidity(RH) factor is high, typically above 60% or more. In Indian subcontinent after the Monsoon RH could be very high contributing to this. Where's the location of your plant? Do you have any humidity control in the shop floor?, it may help. Stainless steel does not require any preheating however some preheating ( typically up to 30-40 DegC)  is advisable to get rid of the moisture accumulation , typically happeni...

Hi, This is a case of moisture condensation. It's possible if the relative humidity(RH) factor is high, typically above 60% or more. In Indian subcontinent after the Monsoon RH could be very high contributing to this. Where's the location of your plant? Do you have any humidity control in the shop floor?, it may help. Stainless steel does not require any preheating however some preheating ( typically up to 30-40 DegC)  is advisable to get rid of the moisture accumulation , typically happening due to condensation.   Thanks.   P.Goswami.P.Eng, IWE. Welding & Metallurgical Specialist Email:pgoswami@quickclic.net,pradip.goswami@gmail.com   From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Hareesh K V Sent: September 28, 2018 12:24 AM To: materials-welding <materials-welding@googlegroups.com> Subject: [MW:28355] Water Vapour in welded joints   Dear Veterans,    After the cooling of weld joints, water ...

Appreciate if you can share the picture -- 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 . Visit this group at https://groups.google.com/group/materials-welding . For more options, visit https://groups.google.com/d/optout .

You can use MS cleats buttered with E 309 electrode for minimum of 3 layers. This helps to avoid contamination and carbon pick up on SS plate. On MS plate, there will not be any issue. C Sridhar ----------------------------------------- On Friday, 28 September, 2018, 9:54:48 AM IST, George Dilintas <dilintas@gmail.com> wrote: This message is eligible for Automatic Cleanup! (dilintas@gmail.com) Add cleanup rule | More info The contamination will not affect the test piece. However in production contamination has to be avoided Στις Πέμ, 27 Σεπ 2018, 13:55 ο χρήστης Gopalakrishnan G < gopal2408@gmail.com > έγραψε: Dear experts I want to do PQR for ss304L to is2062.my doubt is what material to be used for support to avoid distortion ? whether SS or MS ?.if I use MS for support a...

Pl. check. There can not be water vapour after welding. You can see side wetting (on either end of bead toes) and it is normal in SS welding due to certain chemical used in flux coating. It gets dried on its own. C Sridhar. --------------------- On Friday, 28 September, 2018, 11:18:32 AM IST, Hareesh K V <hareesh13h@gmail.com> wrote: This message is eligible for Automatic Cleanup! (hareesh13h@gmail.com) Add cleanup rule | More info Dear Veterans,  After the cooling of weld joints, water vapor is seen in the surface of weld joints. What is the reason? This is particularly seen in SS welded joints.  Regards,  Hareesh K V +91-8547859202 -- https://materials-welding.blogspot.com/ https://www.linkedin.com/groups/122787 --- You received this message becaus...

Dear Veterans,  After the cooling of weld joints, water vapor is seen in the surface of weld joints. What is the reason? This is particularly seen in SS welded joints.  Regards,  Hareesh K V +91-8547859202 -- 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 . Visit this group at https://groups.google.com/group/materials-welding . For more options, visit https://groups.google.com/d/optout .

Sir  Thk u for ur reply.but how it affects the strength ?can u guide me plz. On Thu, 27 Sep 2018, 6:35 pm sandeep kumar, < sandeepdhiman63@gmail.com > wrote: Preferably use SS because of superior properties in terms of corrosion resistance & strength. I assume you are going to weld with 309L type consumables. Otherwise use MS, weld with 309L, that what actually you are doing for the designed weld joint also. Thanks & regards Sandeep Kumar On Thursday, September 27, 2018 at 1:55:59 PM UTC+3, Gopalakrishnan G wrote: Dear experts I want to do PQR for ss304L to is2062.my doubt is what material to be used for support to avoid distortion ? whether SS or MS ?.if I use MS for support any contamination will reflect in test piece?.kindly guide me. -- 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 ...

Yes you can Στις Τετ, 26 Σεπ 2018, 13:05 ο χρήστης Raghuram Bathula < raghurambathula@gmail.com > έγραψε: yes On Wed, 26 Sep 2018 at 14:00, williams p wilson < williamswilsonp@gmail.com > wrote: Dear All, I Have a PQR for SA 516 Gr.70 (N) Plate with Charpy V-notch Test -20 degree C Can we use this as a supportive PQR for SA 36 Welding Procedure Specification. (No Impact Test) Welding Position, Process , Consumables will be same. No PWHT. Thank You & Regards Williams Mechanical Engineer P   Please consider the environment before printing this message -- 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 . Visit this group at https://groups.google.com/group/materials-welding...

The contamination will not affect the test piece. However in production contamination has to be avoided Στις Πέμ, 27 Σεπ 2018, 13:55 ο χρήστης Gopalakrishnan G < gopal2408@gmail.com > έγραψε: Dear experts I want to do PQR for ss304L to is2062.my doubt is what material to be used for support to avoid distortion ? whether SS or MS ?.if I use MS for support any contamination will reflect in test piece?.kindly guide me. -- 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 . Visit this group at https://groups.google.com/group/materials-welding . For more options, visit https://groups.google.com/d/optout . -- https://materials-welding.blogspot.com/ https://www.linkedin.com/gr...

Preferably use SS because of superior properties in terms of corrosion resistance & strength. I assume you are going to weld with 309L type consumables. Otherwise use MS, weld with 309L, that what actually you are doing for the designed weld joint also. Thanks & regards Sandeep Kumar On Thursday, September 27, 2018 at 1:55:59 PM UTC+3, Gopalakrishnan G wrote: Dear experts I want to do PQR for ss304L to is2062.my doubt is what material to be used for support to avoid distortion ? whether SS or MS ?.if I use MS for support any contamination will reflect in test piece?.kindly guide me. -- 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 . Visit this group at https://groups.google.com...

Dear All, I have to re-qualify the welders as per AWS D1.1 but I have some quires. Please help me to resolve the same. 1) What should be the test piece thickness for re qualification ? Our previous thickness was 25 mm. ( As AWS shows option of 10 mm thk test plate which will qualify any production welding thickness ) 2) Do I need to go for mechanical testing or only radiography is sufficient? 3) What will be the qualification range after successful qualification? Regards, Somnath Ashtakar 8668674172 -- 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 . Visit this group at https://groups.google.com/group/materials-welding . For more options, visit https://groups.google.com/d/opt...

Dear experts I want to do PQR for ss304L to is2062.my doubt is what material to be used for support to avoid distortion ? whether SS or MS ?.if I use MS for support any contamination will reflect in test piece?.kindly guide me. -- 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 . Visit this group at https://groups.google.com/group/materials-welding . For more options, visit https://groups.google.com/d/optout .

It is not possible since all of joints butied. Does anybody know about high resolution MFL would be useful in evaluting of joint Regards. On Thu, Sep 27, 2018, 11:15 AM 'Shashank Vagal' via Materials & Welding < materials-welding@googlegroups.com > wrote: Try Crawler RT Best Regards, Shashank C Vagal (Quality Adviser), (+91) 8082395502, 8779046302, NEO METAL-ANALYST & NDT SERVICES ·        A-25, Geet Siddhi, Boradevadi, Moshi-Haveli, PCMC, Pune 412105 ·       301, PRATHAMESH, M G Rd – Mahant Rd, Vile Parle East, Mumbai 400 057 INDIA www.neometalanalystndt.com  /  enquiry@neometalanalystndt.com  /  nach_sam@yahoo.com On Thursday, 27 September, 2018, 12:30:25 PM IST, Ali Asghari < asgharialigl@gmail.com > wrote: Do you have any file for presenting this method...

Try Crawler RT Best Regards, Shashank C Vagal (Quality Adviser), (+91) 8082395502, 8779046302, NEO METAL-ANALYST & NDT SERVICES ·        A-25, Geet Siddhi, Boradevadi, Moshi-Haveli, PCMC, Pune 412105 ·       301, PRATHAMESH, M G Rd – Mahant Rd, Vile Parle East, Mumbai 400 057 INDIA www.neometalanalystndt.com  /  enquiry@neometalanalystndt.com  /  nach_sam@yahoo.com On Thursday, 27 September, 2018, 12:30:25 PM IST, Ali Asghari <asgharialigl@gmail.com> wrote: Do you have any file for presenting this method? I said in previous emails, pressure testing may not detect some rejected defects that don,t cause leak. Regards. On Thu, Sep 27, 2018, 5:45 AM pradip kumar Sil < pradipsil@gmail.com > wrote: Bor...

Do you have any file for presenting this method? I said in previous emails, pressure testing may not detect some rejected defects that don,t cause leak. Regards. On Thu, Sep 27, 2018, 5:45 AM pradip kumar Sil < pradipsil@gmail.com > wrote: Borodcope you can identify internal defect. otherwise pressure test On Mon, 24 Sep 2018, 13:01 Ali Asghari, < asgharialigl@gmail.com > wrote: Thank you for responding but our line is long& we want to know about internal defects and visual in that situation doesn't have good sensitivity. Actually, I am wondering about mechanised ultrasonic that syncronised with crawler. If you know any equipment or company that have simillar technology. Regards. On Mon, Sep 24, 2018, 8:37 AM sandeep kumar < sandeepdhiman63@gmail.com > wrote: for smaller length, a surface inspection with boroscope can be possibly made. Now a days boroscope with robot manipulator (pipe crawler) also available which can be remotely controlled although a costly m...