×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Heat treatment of the Flare tip with CS A350 LF2 flange and UNS08330 body

Heat treatment of the Flare tip with CS A350 LF2 flange and UNS08330 body

Heat treatment of the Flare tip with CS A350 LF2 flange and UNS08330 body

(OP)
Good day,

We are applying Ceramic coating to one of the our flare tip. Ceramic coating requires sintering at 800 degC for 1 hour.
Flare tip is basically pipe with flange: 42" carbon steel A350 LF2 flange and body UNS08330 (L-3m, OD-1m, Wall thickness 10mm).
Per ASME yield strength of the CS A350 LF2 approaching to 0 after 400 degC, however PWHT is generally done at about 600 degC.

Our concern that CS flange may deform under 800 degC heat treatment.

Does someone has similar experience we can apply here?
Or any method to do heat treatment safe for flange?

Thanks!
Dulat

RE: Heat treatment of the Flare tip with CS A350 LF2 flange and UNS08330 body

Yes, as I understand your question, can you remove the CS flange and sinter the ceramic coating on the body (UNS08330)? When this step is completed, re-attach the CS flange.

RE: Heat treatment of the Flare tip with CS A350 LF2 flange and UNS08330 body

But it is a flare tip - on the end of a cantilevered load (stack pipe) extending into ??? - well, essentially nothing.

So, if the flange is removed (I assume it is there to support the "roundness" of the end of the open pipe under years of very high temperature exposure to heat levels that would soften and warp the opening into a crimped (reduced area) for the outlet gases. But otherwise, there are no forces on the tip of the stack pipe.

So remove the flange, apply the ceramic as above, and heat the pipe tip to seal the ceramic (to prevent erosion/corrosion ?) and then re-attach the flange around the newly-sintered ceramic coating. Be careful not to crack the ceramic when re-attaching the flange. That would be your threat to the ceramic.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members! Already a Member? Login


Resources

White Paper - Implementing a Multi-Domain System
IoT systems are multi-domain designs that often require AMS, Digital, RF, photonics and MEMS elements within the system. Tanner EDA provides an integrated, top-down design flow for IoT design that supports all these design domains. Learn more about key solutions that the Tanner design flow offers for successful IoT system design and verification. Download Now

Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close