Cladding or Lining?
Cladding or Lining?
(OP)
I am designing a 48" O.D. x 18'0" long vessel.
F&D head on one end and an eccentric cone 48"O.D. x 30" O.D. w/ 30" flange/bind at the other end.
The customer is requiring CS shell/head with 1/8" SS Clad or Lining.
design data is:
150psig/FV @ 450deg F
1/8" CA
My question is with this having full vacuum will it require clad overlay or explosion bonded clad plate? or will a standard lining be suffecient?
Thank you in advance for your insight and help.
F&D head on one end and an eccentric cone 48"O.D. x 30" O.D. w/ 30" flange/bind at the other end.
The customer is requiring CS shell/head with 1/8" SS Clad or Lining.
design data is:
150psig/FV @ 450deg F
1/8" CA
My question is with this having full vacuum will it require clad overlay or explosion bonded clad plate? or will a standard lining be suffecient?
Thank you in advance for your insight and help.





RE: Cladding or Lining?
ALL DEPENDS.
If it were me, i would go with eplosion bonded clad.
Weld overlay is time consuming and lots of NDE.
BUT if you have heavily loaded internals that require welding to base metal, you may want to overlay instead of stripping out all that clad.
Not sure what you are calling a standard lining, assuming strip lining, is not good for vacuumn service without plug welds all over.
clad is the easiest fastest way.
RE: Cladding or Lining?
i was thinking going with the explosiion bonded plate also, i just wanted confirmation.
my next question is when using software (compress) how would you input the clad material? would i run it at SA-516 gr70 with NO corrosion allowance since the clad is only for corosion? or do i need to use the 1/8" CA in compress and manually input the clad specs?
RE: Cladding or Lining?
If considering the strength of the clad there are additional requriements to be met in Part UCL.
Regards,
Mike
RE: Cladding or Lining?
i had some doubts on what i planed on doing on this project because i have not worked with claded vessel's alot. but you guys confirmed that i am going in the right direction.
thank you
RE: Cladding or Lining?
My expereince with Clad Veesl is very good. Liner vaessels pose many diffculties right from fabrication, NDT & during leaks as well. Weep Holes provided for Leak detection get choked many a times.
Explosion Cladding vessels are the best, economical, more reliable (if cladding done repsoisibly) & easy for in-service inspections.
RE: Cladding or Lining?
RE: Cladding or Lining?
the material thickness that i am coming up with is 5/8" thk SA-516 GR70 with 1/8" SA-240 316L clad. 3/4" total thickness
my next problem/question is...
during fabrication using the clad plate, how do i keep the SS from carbon contamination? mainly when beveling and welding
RE: Cladding or Lining?
Regards
r6155
RE: Cladding or Lining?
RE: Cladding or Lining?
but at the same time, "the customer is always right"
i have already told the customer SS is alot cheaper and faster to build. but they dont care.. makes no sense to me, and they didnt give me a reason other then thats what they want.. lol
RE: Cladding or Lining?
RE: Cladding or Lining?
leed time on the shell plate is 8 weeks, leed time on the head is 14 weeks
DMC clad
RE: Cladding or Lining?
RE: Cladding or Lining?
RE: Cladding or Lining?
RE: Cladding or Lining?
As for as welding, there is no issue with welding CS to Stainless, but of course, a contaminated weld will not provide as much corrosion resistance as the clad, and may be selectively attacked. Perhaps increasing the metallurgy of the weld filler can address some of the issues with weld contamination by the CS.
I am also building a cladded vessel, and will use explosion clad (preferred) or roll clad (minimum) due to long-term reliabily concerns I have seen.