×
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

Jobs

Belleville washer in hot service

Belleville washer in hot service

Belleville washer in hot service

(OP)
I have an externally generated requirement to provide belleville (spring loaded) washers in my piping system. I haven't used them in the past, but passed along the requirement to my subvendors.  (B31.3 piping - hydrogen service)

I have a supplier who's objecting to providing them on the grounds that the high temperatures (580C / 1075 F) would affect the spring properties and reduce the preload over time.

I see they're available in high temperature alloys, so I would think that if this were a concern we could get around it.

Any advice would be appreciated.

Thanks

RE: Belleville washer in hot service

We use X-750 belleville springs made by Key at 1200F. We have no seen no problem other that a little wear after numerous cycles at the  edges where replacement is required if the wear is excessive.

http://www.keybellevilles.com/engine.html

RE: Belleville washer in hot service

We also used the X750 material without problems but it was VERY expensive. We checked some of the washers after they had been in service and, aside from initial set, they seemed unchanged regarding predicted load vs deflection.

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!


Resources