I do not believe you will find a code reference for the J groove bevel usage. It has been standard industrial practice here in the U.S. in the past that when your wall thickness is 0.75 in. & above one should select a J groove prep & I.D. counter bore so as to obtain the optimum fit-up with little or no I.D hi-lo & optimum access to deposit your root bead. With a straight ' V ' groove your access to deposit an acceptable root bead in 0.75 in w.t. & above is difficult because of the tight angle at the root. Generally we use GTAW for the root & 2nd pass then switch to SMAW for the remaining fill passes.
We use this procedure for most of our 100% RT joints on Nuclear, Fossil, Refinery & chemical plants.
Gene Matsko
On Thursday, April 23, 2015 11:03 PM, Noe Mota <x.caret.nm@gmail.com> wrote:
I believe the joint design preparation is more dependable on the type of the selected welding process, targeted mechanical properties and structural application.
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.
Visit this group at http://groups.google.com/group/materials-welding.
To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/CAEGUTtVW6GWam%3Dx-SEjbspGZtsRNtR%2BvBO1BkyBUFPbhwGEi_Q%40mail.gmail.com.
For more options, visit https://groups.google.com/d/optout.
Regards
Noé
On Tuesday, April 21, 2015, Prabhakar Raj <prabhakarmet@gmail.com> wrote:
-- On Tuesday, April 21, 2015, Prabhakar Raj <prabhakarmet@gmail.com> wrote:
Can anyone give me code reference for J groove bevel end requirement above 22mm wall thickness. Is it mandatory to go for J groove.?--
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.
Visit this group at http://groups.google.com/group/materials-welding.
To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/CA%2B-71w9oYr_5Wb2e8MxKXSn_oWGa2YDv%2BQkOheTDE-D_ZoYRgA%40mail.gmail.com.
For more options, visit https://groups.google.com/d/optout.
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.
Visit this group at http://groups.google.com/group/materials-welding.
To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/CAEGUTtVW6GWam%3Dx-SEjbspGZtsRNtR%2BvBO1BkyBUFPbhwGEi_Q%40mail.gmail.com.
For more options, visit https://groups.google.com/d/optout.
No comments:
Post a Comment