Ceramic Manufacturing Capabilities for Custom Technical Parts

Pressing And Extrusion

Dry pressing suits flat discs, washers and simple plates at repeatable volume; undercuts are limited. Isostatic pressing better serves dense round or tubular blanks, while extrusion favors long constant profiles.

Tooling economics favor stable, higher-volume parts. Shrinkage during sintering means final tolerances require allowance.

Molding And Green Machining

Slip molding suits complex hollow shapes and lower volumes; drying variation can affect consistency. Injection molding supports intricate repeat production, but mold design and feedstock development add upfront work.

Green machining adds holes, slots and contours before firing. Fragile green bodies limit thin features and handling.

Sintering And Final Finishing

High-temperature sintering creates the final ceramic structure but changes dimensions. Post-fire CNC machining, grinding and lapping recover critical interfaces where formed accuracy is insufficient.

Precision finishing suits sealing faces, bores and mating features. It increases cost and should be reserved for functional dimensions.

Forming And Firing

Alumina and zirconia shrink predictably after firing. Silicon carbide and nitride demand tighter atmosphere control.

Machining And Tolerances

Harder ceramics extend grinding time and cost. Green machining can reduce risk before sintering.

Application Selection

Electrical duty favors insulating or conductive material choices. Chemical exposure can outweigh initial part cost.

New Subsection

Green-State Features

Complex channels, noncritical holes and molded geometry are usually designed into green-state forming. This reduces post-sinter machining, but shrinkage allowance and draft must be engineered.

Post-Sinter Requirements

CNC machining and grinding add precision holes, threads, slots and functional surfaces after sintering. C-CERAMIC publishes minimum slot width 0.2 mm and internal thread M2 with appropriate application review.

Finishing And Delivery

Laser marking, metallization, glazing or coatings, assemblies and protective packaging should be specified on the drawing. Each added operation can improve identification or interface performance while increasing lead time and cost.

Powder And Firing Control

Powder lots should be released against agreed material and moisture checks.

Green-density maps expose variation before sintering; recorded profiles link shrinkage to each batch.

Metrology And Surface Integrity

CTQ dimensions require specified gauges, datum schemes, and measurement uncertainty.

Surface checks should cover roughness, porosity, chips, cracks, and cleanliness before release.

Evidence Beyond Brochures

Drawings should name test methods, sampling plans, and acceptance criteria.

Buyers can audit records, review first-article data, and witness final-inspection traceability.

Engineering And Materials

RFQ question: Which alumina, zirconia, silicon carbide, or silicon nitride grade fits the load, chemistry, and temperature? Ask for design-for-manufacture feedback before tooling.

Operations And Metrology

RFQ question: Which forming, sintering, CNC, grinding, lapping, and inspection steps are in-house? Confirm equipment capacity, outsourced-process controls, traceability, certifications, and measurement tools.

Transfer And Continuity

RFQ question: How will prototype records transfer to low-volume and mass production? Require application references, change-control communication, tooling ownership, forecasting expectations, and supply-continuity plans.

Account For Shrinkage

Firing changes dimensions. Provide functional dimensions and datum strategy; have the supplier review shrinkage and machining allowance before tooling.

Balance Material Properties

A single-property material choice can fail in service. Compare thermal, mechanical, electrical, chemical, and wear requirements against the operating environment.

Specify Only Critical Tolerances

Tighter tolerances add grinding cost. Mark truly functional dimensions and accept process-appropriate limits elsewhere.

Validate Features And Surfaces

Post-fire holes, threads, and fine slots may require difficult machining. Define roughness, sealing, and contact requirements, then validate prototypes before release.

Normalize Quote Scope

Low quotes may omit tooling, inspection, finishing, or yield assumptions. Compare like-for-like scope, material, tolerances, quantities, and acceptance criteria.

Define The Application

First, provide operating temperature, media, loads, electrical needs, annual quantity, and target timing. Identify sealing faces, thin walls, holes, threads, and other critical features.

Review The Drawing Package

Next, transmit controlled drawings, 3D models, tolerance callouts, surface requirements, and confidentiality terms. C-CERAMIC can use this package for DFM review and a material and process recommendation.

Prototype, Approve, Improve

Then, define prototype quantity, inspection criteria, functional tests, and acceptance samples. Freeze the design after testing, run a pilot lot, approve production, and feed field-quality results into ongoing control.