×
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

Reasonable Parallellism Tolerancing for stack of flat plates

Reasonable Parallellism Tolerancing for stack of flat plates

Reasonable Parallellism Tolerancing for stack of flat plates

(OP)
Hello all,

I am working on an array reactor cell, which involves a stack of plates which are bolted together. Flatness and parallellism are highly desirable for uniform compression across the reactor membrane. I am new to geometric tolerancing, and I would like to know what a reasonable parallellism tolerance would be. The plates are 10" square by .5" thick.

Thanks in advance.

J

RE: Reasonable Parallellism Tolerancing for stack of flat plates

It all depends on how they are made.  If they are just stamped you will have lots of pulldown on one side & burrs on the other.  If they are ground you can easily have .001" flatness.  We lap parts to .0005 mm flatness (half a micron).  Specify what you need, it's up to manufacturing to figure out how to get it.  Specifying more than you need will be a waste of money.

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