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!

*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.

Jobs

Machine Grade Fused Silica Lubrication

Machine Grade Fused Silica Lubrication

(OP)
I'm designing a direct chill tilt-pour casting mold. Fused silica will be used for part of the mold. I have found a supplier of machine grade fused silica. I personally have never machined a ceramic and our machine shop also has close to nil experience. What is the extent of the lubrication that is required. Is spraying a continuous stream okay or should flooding be used? The manufacture says use 'lots' of lubrication or risk chipping the part. Thanks for any input. The raw material isn't cheap and I would hate to ruin a part for lack of proper lubrication. Thanks.

Metalhead

RE: Machine Grade Fused Silica Lubrication

Yes, use flood coolant. Selection of abrasives and tool feed rate (slow) is also important.  

RE: Machine Grade Fused Silica Lubrication

(OP)
Thanks for the response. Just to clarify a continuous stream hitting the machined spot isn't enough?

Interestingly enough, the data sheet says the ceramic can be machined with carbide tip tools as long as there is plenty of lubrication. I'm assuming this goes for both cutting and drilling operations.

Thanks

Metalhead

RE: Machine Grade Fused Silica Lubrication

Continuous stream will work. Carbide will work as long as the edges stay sharp. You will know it gets dull when the quartz breaks. I would suggest that diamond abrasive is better.

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


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