Materials & Welding

Dear experts, Can anybody clarify what is exact meaning of QW 407.2 PWHT supplymentry essential variable (in context of SMAW process). "'the procedure qulifn test subject to PWHT essentialy equalivent to that encounter in fabrrication of priductn weld inclusind 80% of aggregate time at temperature.PWHT total time n temp may b applied in one heating cycle''... -- 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/ 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.

Dear Sir: Excuse me, Could you give us more information  in order to understand your requirement?  Are you looking for Anchorage Design, please refer to API 650 Appendice E- Seismic Design of Storage Tanks.paraph E.6.2 Resistance to Design Loads and E7 Detailing Requirements. Regards from Colombia South America jml 2011/6/30 manoj john < manojacgnr@gmail.com > Dear All Members, I  would like to know about permanent attahcment for settlement for API storage tanks.  if anybody have knowledge of this subject please give me information about this attachment. 1) How do we provide permanent attachment. 2) What will be the size of attachment. 3) How many attachments required. 4) In what elevation it should be etc. etc.. -- 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/ The vie...

Dear sir, You can use Line Scan method to calculate and investigation on dilution. Kian --- On Sat, 6/25/11, Vicky Bangar <bangarvicky007@gmail.com> wrote: From: Vicky Bangar <bangarvicky007@gmail.com> Subject: Re: [MW:11469] Dilution To: materials-welding@googlegroups.com Date: Saturday, June 25, 2011, 3:26 AM Dear Maulik, The formula which u have given is correct. But for % of element in weld metal will vary bead by bead. And also for which element shall we calculate? Because element wise laso dilution will change. So in this case what should be taken as reference? On Fri, Jun 24, 2011 at 9:33 PM, Maulik Thakkar < mlkthakkar2@gmail.com > wrote: Dear Vicky,   Dilution= [% of a element in base metal (by PMI/by TC)-% of a element in weld metal (by PMI/by Chemical testing)-%of a element in filler wire (got it by TC/SEC IIC)] whole divided by % of a element in base metal.   Then deduct product from 1 & multiply product to 100. On Fri, Apr 2...

Hi,   If you application invloves welding of pipes (Where back chipping is not possible), there are two options for welding the root pass.   1. Use electrodes E 6010 or E 7010 (cellulosic Electrodes) or E 7016-1 for non critical lines (e.g., lines other than compressor suction / inlet lines). 2. Use STT (Surface Tension Transfer) Process for root pass, it is similar to GMAW short circuit transfer mode of metal transfer. You'll need to properly set the welding parameters to avoid any LOF, but once your welders are well trained, you can really see the productivity. Please note that some clients still have a restriction on using this process.   If you application involves fabrication of pressure vessels, where you have enough access for back chipping the root pass, and you wish not to do so, then SAW is a good option.   The joint preparation shall be such that the root face or the land should be long enough to prevent any burn though when welding...

Yadav,   You should go for an experiment to validate the results to conclude the results are in inline with simulation.   I have validated the results with experiments , also with GA .   Why do you want to justify that, Yield is more than the requirement ?   Why you missed the is conduction heat transfer?    Verify the weld size , Width of bead with experiemnts to your simulated one,   If the both the bead size , depth of penetration is nearly equal means your have simulation is justified , other wise you need to redo the simulation.         On Thu, Jun 30, 2011 at 7:23 PM, ashish yadav < yadavashish018@gmail.com > wrote: Hello K.Babu Thanks for your support. Its good that you have worked in sysweld. I am also doing a project to simulate a Laser weld joint of two SS plate having dimension100*400mm of 2mm thickness. weld run is of 400mm by putting plates together with 2mm thickness. In heat model I have taken 3D conical gaussian heat source for the laser sourc...

---------- Forwarded message ---------- From: JALADHAR JENA < jdjena2006@yahoo.co.in > Date: Thu, Jun 30, 2011 at 5:15 PM Subject: Re: Fwd: [MW:11519] Reheating Cracks To: pinaki boxi < boxi.pinaki@gmail.com > Mr,   this is very silly question and level -1 candidate is sufficient to give this reply.in which block u calibrate ,in that block  you should set decibal(gain)------. if you have to check welding ( as  per asme sec-5 ,article-4) asme block reqd. may be V1 orV2 BLOCK. Secondly for welding side drill hole is not reqd. TDH is reqd. (1.6 mm  or 3.2mm) that is depend upon procedure. if u want to check parent metal FBH is reqd( as  per asme sec-5 ,article-5) that time only v2 block is needy. angle probe 70 degree is the best detector probe for cracking.may be trans verese crack,long. crackor star crak).   dada , in ut  angle probe used only transverse scanning that time operator shoulnot be do zig zack scanning.if u not scan properly with angulating way u cant de...

Mr. Rathod This software is of ESI group. We have taken its license from company as it is illegal to use pirated software but for the personal use you can download it from internet. I have not tried this so can not tell you about the link. Yes you can two different grade of steel. Some steel grade are predefined in this.Otherwise you can create your own material database. On Thu, Jun 30, 2011 at 5:03 PM, Chandrahas Rathod < chandrahas.rathod@gmail.com > wrote: > > Ashish yadav, can you tell me is the SYSWELD Software available on for > downloadable? or do we need to buy it from recognised company? >  Can it be used for simulation for two different grade of steel? > Pleasse reply > > On Thu, Jun 30, 2011 at 9:23 PM, ashish yadav < yadavashish018@gmail.com > > wrote: >> >> Hello K.Babu >> Thanks for your support. >> Its good that you have worked in sysweld. I am also doing a project to >> simulate a Laser weld joint of...

Ashish yadav, can you tell me is the SYSWELD Software available on for downloadable? or do we need to buy it from recognised company?  Can it be used for simulation for two different grade of steel? Pleasse reply   On Thu, Jun 30, 2011 at 9:23 PM, ashish yadav < yadavashish018@gmail.com > wrote: Hello K.Babu Thanks for your support. Its good that you have worked in sysweld. I am also doing a project to simulate a Laser weld joint of two SS plate having dimension100*400mm of 2mm thickness. weld run is of 400mm by putting plates together with 2mm thickness. In heat model I have taken 3D conical gaussian heat source for the laser source. Arc efficiency is 60% and for cooling rate, I have used predefind convective and radiation(mm). After that I solved for the thermal and mechanical results. In thermal results temperature contour, phase proportion and grain size is there. In mechanical results, thermal stress, strain, strain energy is there. Now I can not understand that how...

Hello K.Babu Thanks for your support. Its good that you have worked in sysweld. I am also doing a project to simulate a Laser weld joint of two SS plate having dimension100*400mm of 2mm thickness. weld run is of 400mm by putting plates together with 2mm thickness. In heat model I have taken 3D conical gaussian heat source for the laser source. Arc efficiency is 60% and for cooling rate, I have used predefind convective and radiation(mm). After that I solved for the thermal and mechanical results. In thermal results temperature contour, phase proportion and grain size is there. In mechanical results, thermal stress, strain, strain energy is there. Now I can not understand that how i will justify this results. Should I go for the experiments or some standards are there? Please help me.. On Thu, Jun 30, 2011 at 4:24 PM, K.Babu < kbabupsg@gmail.com > wrote: > Ashish Yadav, > > How much is greater ? > > How do you setup the cooling rate in Sysweld and how much you assum...

dear, GMAW process with  proper combination of shielding gas with some advance features power source can be used for root welding. This process is widely used in cross country pipeline welding.this process is used in pipeline welding is to increase the production rate.   Why GMAW is not widely used for single sided full penetration joints (with out chip back) for pressure vessel industrial applications? Is there any problem regarding to penetraiton or lack of fusion? I am confusing. Request you to give technical answer. -- 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/ 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. ...

dear, there is no problem for taking RT, if u r using other ndt methods,you will not get the correct results. juno johny inspection engineer +971509754966 On Wed, Jun 29, 2011 at 3:08 PM, dheerendra chauhan < chauhandheerendra@gmail.com > wrote: Gents, we are fabricating a Pipe line for Natural gas . Now the contractor has done Primer on Joints also before the NDT testing. How it is going to affect it & what are the remedy for that. -- Thanks & Regards   Dheerendra Singh Chauhan Project Manager Powergas International +234-7055215480 -- 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/ 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/sta...

Ashish Yadav,   How much is greater ?   How do you setup the cooling rate in Sysweld and how much you assumed the arc efficiency , What type of heat input model?   The above factors have dramtaic impact on the resulst.   I was simulated the Autogeneous TIG welding with sysweld2006, i have got as much as 16% variation from the mock up values.       On Thu, Jun 30, 2011 at 3:40 PM, ashish yadav < yadavashish018@gmail.com > wrote: Hello frnds                 I have done a laser welding simulation using SYSWELD.In mechanical results I am getting the thermal stress values greater than yield strength of metal(stainless steel). How can I justify this. Please help me. -- Regards Ashish Yadav -- 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/ The views expressed/exchnage...

Dear All Members, I would like to know about permanent attahcment for settlement for API storage tanks. if anybody have knowledge of this subject please give me information about this attachment. 1) How do we provide permanent attachment. 2) What will be the size of attachment. 3) How many attachments required. 4) In what elevation it should be etc. etc.. -- 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/ 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.

there is electrode , which is having good penetration power i.e. E7010 ,  get check with the manufacture On 30 June 2011 17:39, Maulik Thakkar < mlkthakkar2@gmail.com > wrote: Dear,,   With out chip back. I want the process which can replace slower GTAW for single sided full penetration joint with out any chip back On Thu, Jun 30, 2011 at 3:55 PM, rajeev arora < rajeevarora007@gmail.com > wrote: SMAW On 30 June 2011 17:05, Maulik Thakkar < mlkthakkar2@gmail.com > wrote: Is there any option of GTAW for root run to be carried out in pressure vessel welding? On Thu, Jun 30, 2011 at 2:20 PM, AVA < ava.ssg@gmail.com > wrote: There is no limitation for  GMAW in ASME code. But pay attention that some of gas cavities made in weld metal that are acceptable according to codes, but it's make may risk for hydrogen induce. Then this process is commonly used for structural equipment's, not in pressure parts.   Regards A.V.   From: materia...

Dear,,   With out chip back. I want the process which can replace slower GTAW for single sided full penetration joint with out any chip back On Thu, Jun 30, 2011 at 3:55 PM, rajeev arora < rajeevarora007@gmail.com > wrote: SMAW On 30 June 2011 17:05, Maulik Thakkar < mlkthakkar2@gmail.com > wrote: Is there any option of GTAW for root run to be carried out in pressure vessel welding? On Thu, Jun 30, 2011 at 2:20 PM, AVA < ava.ssg@gmail.com > wrote: There is no limitation for  GMAW in ASME code. But pay attention that some of gas cavities made in weld metal that are acceptable according to codes, but it's make may risk for hydrogen induce. Then this process is commonly used for structural equipment's, not in pressure parts.   Regards A.V.   From: materials-welding@googlegroups.com [mailto: materials-welding@googlegroups.com ] On Behalf Of Dinesh Somwanshi Sent: Thursday, June 30, 2011 1:06 PM To: materials-welding@googlegroups.com ...

SMAW On 30 June 2011 17:05, Maulik Thakkar < mlkthakkar2@gmail.com > wrote: Is there any option of GTAW for root run to be carried out in pressure vessel welding? On Thu, Jun 30, 2011 at 2:20 PM, AVA < ava.ssg@gmail.com > wrote: There is no limitation for  GMAW in ASME code. But pay attention that some of gas cavities made in weld metal that are acceptable according to codes, but it's make may risk for hydrogen induce. Then this process is commonly used for structural equipment's, not in pressure parts.   Regards A.V.   From: materials-welding@googlegroups.com [mailto: materials-welding@googlegroups.com ] On Behalf Of Dinesh Somwanshi Sent: Thursday, June 30, 2011 1:06 PM To: materials-welding@googlegroups.com Subject: Re: [MW:11528] GMAW application restriction   generally GMAW is used for the filling & capping only.generally the amout of heat produced in this process also there will be chances of lack of fusion at the edges ( fusi...

Is there any option of GTAW for root run to be carried out in pressure vessel welding? On Thu, Jun 30, 2011 at 2:20 PM, AVA < ava.ssg@gmail.com > wrote: There is no limitation for  GMAW in ASME code. But pay attention that some of gas cavities made in weld metal that are acceptable according to codes, but it's make may risk for hydrogen induce. Then this process is commonly used for structural equipment's, not in pressure parts.   Regards A.V.   From: materials-welding@googlegroups.com [mailto: materials-welding@googlegroups.com ] On Behalf Of Dinesh Somwanshi Sent: Thursday, June 30, 2011 1:06 PM To: materials-welding@googlegroups.com Subject: Re: [MW:11528] GMAW application restriction   generally GMAW is used for the filling & capping only.generally the amout of heat produced in this process also there will be chances of lack of fusion at the edges ( fusion boundaries ) the torch cup also makes sometimes for welding in the joint.But this pr...

Dear mr mahindran, You can shoot RT any time , only UT MT and PT are not able to carry out on the primer , Just raise an TQ or Deviation request and get approval from client I hope this helpful for your problem Regards Santosh Gaikwad Sent on my BlackBerry® from Vodafone From: dheerendra chauhan <chauhandheerendra@gmail.com> Sender: materials-welding@googlegroups.com Date: Thu, 30 Jun 2011 10:36:09 +0100 To: <materials-welding@googlegroups.com> ReplyTo: materials-welding@googlegroups.com Subject: Re: [MW:11530] NDT on Pipe line for Natural gas Dear Mr. Santosh, we are going for RT. On Wed, Jun 29, 2011 at 4:17 PM, < santoshcwi@gmail.com > wrote: Dear Mr. Dheerendran, please mention which NDE method you need to carry out on the pipeline Regards Santosh Gaikwad Sent on my BlackBerry® from Vodafone From: dheerendra chauhan < chauhandheerendra@gmail.com > Sender: materials-welding@googlegroups.com Date: Wed, 29 Jun 2011 12:08:15 +0100 To: < material...