Materials & Welding

Dear sir / experts,  I need help for welding a M.S. Pipe  with Mechanized FCAW Process for root pass to get good penetration for X-ray ( without backing strip & back gouging ) Wire, E71T-1. Dia, 1.2 mm.  Shielding  Gas,  100 % CO2.  Pipe  Dia  200mm. Wall Thickness 08.00mm. Welding  Position 1GR. Please give me some guidelines  for above welding operation . Like,  voltage, Amps, and wire speed, travel speed, stick out,  torch angle, gas flow rate for root run  & other subsequent  run. Few Engineers say that FCAW  are  not be recommended for open root run. They advised for  root  run  weld with GMAW process & subsequent run  by FCAW process. And I found in  ESAB Welder Guide Book . Page No. 16.  they are also  not recommended  root run  by FCAW.  on Pipe  &  Plate both. My queries are as follows : 1.      Is it possible to weld a root run for X quality penetration  with  FCAW Process? 2.     There is any restriction for root  run welding  with FCAW  ...

Tube matl---SA213 T 91   Size----------44.5 X 4.5mm thick Stud matl------ SS 304   Size-------------Dia 6mm and length 12mm Welding process---- Drawn Arc Stud welding Question--- 1. Whether base material is to be Preheated or Not                     2. Stress Relieving is required or Not.  THANKS & BEST REGARDS, KG.PANDITHAN, IWE,  AWS-CWI, CSWIP 3.1, CONSULTANT-WELDING & QUALITY Mobile no: +919940739349 -- 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 . To post to ...

Gentalmen, I would be thankful, if anyone can provide me set of papers, for CSWIP 3.2 exam , after 10 years completion?   -- 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 . To post to this group, send email to materials-welding@googlegroups.com . To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/CAMXKe_qG13GTJndGntkaxm3ANmNVgi_Cv_%2Bq79PM%2BT1kwVpnVQ%40mail.gmail.com . For more options, visit https://groups.google.com/d/optout . ...

Dear Members Such type of mails soliciting for jobs is not allowed in this forum.  Pl stop.  This forum is meant for Technical discussions only. Rgds  Prakash. G.  ASME AIS Independent Consultant. ASME/ISO/PED From: thanikavel prabhu Sent: Thursday, 29 September 2016 08:41 To: Materials & Welding Reply To: materials-welding@googlegroups.com Cc: karthik6684@yahoo.com Subject: Re: [MW:25465] Re: CSWIP 3.1 Model question...

Provide base material chemical composition.. On 27-Sep-2016 1:26 pm, "Mhaskar Aly" < mhaskar.aly@gmail.com > wrote: Dear All, Kindly suggest Filler Metal for C45 to S355 JR materials with SMAW & GTAW process Thanks & Regards Aly -- 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 . To post to this group, send email to materials-welding@ googlegroups.com . To view this discussion on the web visit https://groups.google.com/d/ msgid/materials-welding...

This amplifies my clarification of what was meant by HIC in earlier contributions. HIC relates to performance of carbon and carbon-manganese steels in process applications where there is a low percentage of H2S in the product. Kannayeram is distinguishing between HIC and HICC which is hydrogen induced cold cracking which occurs in weldments and is known by many other terms such as heat affected zone cracking, cold cracking, underbead cracking etc. Despite the similarity of the acronyms they are unrelated in the factors causing the cracking.   Since most cracking in carbon and low alloys steels is related to hydrogen it is always important to get behind the acronyms and clarify the exact type of cracking, and the factors involved.   Alan Denney AKD Materials Consulting Ltd From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Kannayeram Gnanapandithan Sent: 27 September 2016 16:32 To: materials-welding <materials-welding@googleg...

Dear Experts Since the stress value of SA-213 (Seamless Tube) TP 316 Ti and SA-312 (Seamless Pipe) TP 316 Ti are not indicated in ASME Sec. II-D. 　 As per UG-15 provisions, can we use SA-240 (plate) TP 316 Ti stress value for calculating the tube and pipe thickness calculation. However Tube and Pipe of TP316Ti will be procured based on ASME Sec II-A specifications ?　 I have investigated one old code case record number- BC88-182 which has similar kind of query.　 Further I have also found new Code case 2849, Approval date 1-20-2016 ' Use of Austenitic Stainless Steel SA-312/SA-312M Type 316Ti (UNS S31635) in the Construction of Heating Boilers' , which may be resembled with my query case. However right now I am not having copy of the same. Anakh Sirvaiya Mechanical Engineer -- 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...

Txs Alan, what about HICC, does it occur only in weldments On 27-Sep-2016 8:55 pm, "Alan Denney" < alan@denney1.freeserve.co.uk > wrote: There is a danger that the discussion is getting confused. Confirming what Ahmed Eissa wrote:   Hydrogen induced cracking (HIC) – using this term strictly in relation to the behaviour of carbon and carbon-manganese controlled rolled steels to crack where the process fluids contain relatively small quantities of hydrogen sulphide (and not the many other types of cracking related to hydrogen in steels) is unrelated to hardness. It is due to the presence of elongated manganese sulphide inclusions in the steel (type II manganese sulphide inclusions) which provide sites for the accumulation of atomic hydrogen which then form molecular hydrogen which fractures the steel, causing cracking or blistering.   Sulphide stress corrosion cracking of steels is again due to hydrogen sulphide and the factors are the concentration of hydrogen sulphide...

There is a danger that the discussion is getting confused. Confirming what Ahmed Eissa wrote:   Hydrogen induced cracking (HIC) – using this term strictly in relation to the behaviour of carbon and carbon-manganese controlled rolled steels to crack where the process fluids contain relatively small quantities of hydrogen sulphide (and not the many other types of cracking related to hydrogen in steels) is unrelated to hardness. It is due to the presence of elongated manganese sulphide inclusions in the steel (type II manganese sulphide inclusions) which provide sites for the accumulation of atomic hydrogen which then form molecular hydrogen which fractures the steel, causing cracking or blistering.   Sulphide stress corrosion cracking of steels is again due to hydrogen sulphide and the factors are the concentration of hydrogen sulphide (partial pressure thereof) the pH of the solution and the susceptibility of the material, commonly assessed by its hardness. NACE MR0175 relates ...

Dear All, Kindly suggest Filler Metal for C45 to S355 JR materials with SMAW & GTAW process Thanks & Regards Aly -- 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 . To post to this group, send email to materials-welding@googlegroups.com . To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/CAOenW4hmEazRiZpXiv8yB52hrmZ8MB2QjjJdSsKbRybHODkc8Q%40mail.gmail.com . For more options, visit https://groups.google.com/d/optout .

It is controlled by the crystalline structure and more specifically: by the diffusion of atomic hydrogen by the capability to sustain the pressure of molecular hydrogen by plastic transformation The increase of hardness is an indication of low ductility and thus less possibility of plastic transformation of the grains 2016-09-26 19:25 GMT+03:00 'Ahmed Eissa' via Materials & Welding < materials-welding@googlegroups.com > : Regarding the belowmentioned I need to confirm that HIC is not controlled by hardness control but by steel chemistry  All shall be reminded that wet sour service induce  Sulfide stress cracking Hydrogen induced cracking  Stress oriented hydrogen induced cracking  Hydrogen blistering  Nace MR 0175 or nace MR 0103 only control ssc, please read these code introduction /preface  Ahmed eissa  Materials and Corrosion Engineer  Sent from Yahoo Mail on Android On Thu, 15 Sep, 2016 at 5:38 am, pgoswami < pgoswami@quickclic.net > wrote: He...