Ceramco Inc, custom ceramics and ceramic fasteners manufacturer


Request a Quote for Price and Delivery Information

We're happy to generate price quotes for your ceramic components! Either fax or e-mail your print(s), including anticipated Quantities & Ceramic Material Requirements to the sales department and we will reply as soon as possible.  It may take 3 to 5 business days for your quote to be processed.  Please review the Ceramic Design Guidelines given below to assist you in submitting a RFQ.

Diamond end-mill writing in ceramic


Ceramic Design Guidelines

All ceramic products undergo a firing process at temperatures of at least 1400° C, and since this heat treatment results in a shrinkage of at least 16%, any ceramic component will have some distortion after firing. However, by virtue of our unique process technology, the unfired (green) shape has a negligible density variation across any given cross section.  The effect of this is a uniform shrinkage through the subsequent manufacturing steps and the result is a final product that is not distorted due to differential shrinkage.

Tolerances for As-Fired Ceramic Product

  • For dimensions over .500", the tolerances are +/- 1% or +/- .005 inch, whichever is greater.
  • For dimensions under .500" , the tolerances are +/- 1% or +/- .002 inch, whichever is greater.
  • Camber/flatness of tubes/plates is 0.006 in/in, or better.
  • Out of round condition for cylindrical features is max 1%.
  • Surface finishes are 20 micro inches or better.

Process Limitations

Our process provides unique shaping capabilities. It also has a few limitations. Incorporating the following process limits in your design prior to submitting a quote will greatly expedite the quoting process.

  • The minimum wall thickness cannot be less than 0.020 inch.
  • The maximum wall thickness cannot be more than 0.250 inch for full dense materials and 0.350 for non-dense materials.
  • The maximum overall dimension should not exceed 4 inches for full dense materials, and 6 inches for non-dense materials.
  • It is not possible to mold in features that make the mold core non-extractable, such as undercuts on an internal diameter.
  • Hole diameters cannot be less than 0.010 inch.

Grinding

If the as-fired tolerance guidelines above are not sufficient for your application, grinding the fired product to more exacting tolerances using diamond impregnated tools is an option available. Flat surface, OD and ID, ultrasonic, and centerless grinding can be done on our up-to-date CNC equipment. However, grinding adds substantially to the price and we suggest you take the time to review the absolute necessity of each dimension (focus on the critical dimensions to be ground and the resulting cost reduction can be significant without compromising part fit and function).

 
© 2010 Ceramco, Inc., all rights reserved.
P.O. Box 300, 1467 East Main Street, Center Conway, NH 03813
Tel: (603) 447-2090 | Fax: (603) 447-3906