[MW:24538] IGC-Test as per A262 Practice E

Are u referring to u-tubes? Solution annealing in the furnace may cause distortions, which affects tube insertion into bundle skeleton. You can use electrical resistance heating to heat the u bend portion plus some 50 to 75 mm on both straight lengths. On attaining the solution annealing temperature apply a blast of air to quench it. Usually possible in 2 minutes to bring to less than 375 degree C. Can purge with nitrogen or argon to prevent scaling inside. A mock up on a similar piece is helpful to establish the parameters - current, heating time, volume and time duration of air blast, tube thinning, ovality, etc. IGC test at electric contact zone may also be considered. Extra care required during bending of R= 38.1 to prevent OD collapse. Liquid penetrant test on the entire heated zone advisable.

--
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/83ce7b8b-3c6c-4264-adb8-1bf5aec0242c%40googlegroups.com.
For more options, visit https://groups.google.com/d/optout.