Flat plates and blocks
Rectangular plates and blocks ground on faces and edges to size.
Product family
Ceramic plates, discs, and blocks
Ground and lapped zirconia and alumina plates, round discs, index plates, dispersion discs, wear plates, and blocks with holes, slots, and controlled flatness.
Product overview
What we make and how it is reviewed
Ceramic plates and discs are used as wear surfaces, insulating bases, fixtures, index and valve plates, and dispersion discs. Their value usually sits in one or two faces: flatness, parallelism, and finish, plus the position of holes and slots.
Typical requests include alumina and zirconia plates and blocks, round discs and index plates, dispersion discs for mixers, wear liners and strips, coloured zirconia plates, and plates with hole patterns or pockets. Plates are pressed, sintered, then surface ground and lapped on functional faces.
Large thin plates warp in sintering and need more grinding stock. Send the plate size, thickness, flatness, and which faces and holes are functional.
Product types
Part types we quote to drawing
These are made to customer drawings or samples, not sold from stock. Final material, route, and acceptance are confirmed for each drawing.
Discs and index plates
Round discs and index or valve plates with lapped faces and hole patterns.
Dispersion and mixing discs
Wear-resistant discs for dispersers and mixers in abrasive slurries.
Wear plates and liners
Plates and strips that protect machine surfaces from sliding or abrasive wear.
Plates with holes and pockets
Fixture and insulating plates with drilled holes, counterbores, slots, and pockets.
Decision map
Requirements that change machining and quotation
Use the final column as a drawing and RFQ check. A requirement is easier to review when its function and acceptance evidence are stated together.
| Requirement | Why it changes the route | What to define in the RFQ |
|---|---|---|
| Flatness and parallelism | Thin, large plates warp in sintering; tight flatness needs grinding and lapping. | Give size, thickness, flatness, parallelism, and the measurement method. |
| Face finish | Lapping costs more than grinding and only pays on sealing or contact faces. | Specify Ra only on the faces that need it. |
| Hole and slot pattern | Holes near edges or each other crack during drilling and grinding. | Give hole sizes, positions, edge distance, and tolerances. |
| Edges and corners | Sharp corners chip in handling and use. | Specify chamfers and permitted chips. |
Material paths
Select against the failure mode
Alumina
Standard choice for insulating, fixture, and wear plates.
Zirconia
Tougher for impact, thin sections, and dispersion discs.
ZTA
Middle option for wear liners that need more toughness than alumina.
Quote-ready package
Information to send for review
- 1 Drawing with size, thickness, and functional faces marked.
- 2 Flatness, parallelism, and Ra on functional faces.
- 3 Hole, slot, and pocket details with tolerances.
- 4 Material or purity target and operating duty.
- 5 Quantity and target timing.
Engineering guides
Continue by component, material, or acceptance problem
Each guide below narrows one part family or manufacturing constraint and leads back to the drawing information needed for review.
Ceramic Lapped Seal Faces RFQ Guide: Flatness, Ra, Leak Risk
RFQ guide for lapped ceramic seal faces, valve seats, vacuum interfaces, gasket lands, flatness, Ra, edge condition, subsurface damage, and leak-test expectations.
Machined Ceramic Plates for RF and Microwave Assemblies
RFQ guide for machined alumina, AlN, and other ceramic plates used in RF and microwave assemblies, including flatness, thickness, holes, finish, and inspection.
Ceramic DFM Design Rules: A Go/No-Go Handbook for Machinable Features
Design-for-machining rules for ceramic holes, slots, thin walls, internal radii, edge breaks, datums, and inspection access.
Questions before quotation
Product RFQ FAQ
How flat can a ceramic plate be made?
It depends on size, thickness, and whether the plate is ground or lapped. Send size, thickness, and the flatness you need so the route can be checked.
Engineering RFQ
Send your drawing and ceramic requirements for engineering review
Start with the part function, material or grade if known, quantity, and the critical requirements; an early-stage brief is enough to begin. If online submission is interrupted, the form prepares the same RFQ as an email instead.
- Useful files: STEP/STP, X_T/X_B, IGES, STL, or PDF drawings.
- Upload limit: up to 3 files, 5 MB each, 8 MB total.
- Sensitive projects: do not send export-controlled, classified, or restricted data before an approved handling agreement is in place.
Prefer to use your own email?
RFQ email: info@szcomo.com
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