What size of green silicon carbide is used for ceramic components?
For ceramic components, green silicon carbide (GC) grit sizes are selected by process stage and precision requirement, following FEPA/JIS standards. Below is the clear, usable sizing:
Core Grit Sizes for Ceramic Components
| Process Stage | Grit Range | Typical Sizes | Purpose |
|---|---|---|---|
| Rough Grinding | Coarse | 80#–240# (F80–F240) | Stock removal, shaping, fast material cut |
| Fine Grinding | Medium | 280#–400# (F280–F400) | Smoothing, pre-polish, reduce surface roughness |
| Precision Lapping/Polishing | Fine | 600#–1200# (F600–F1200) | High precision, mirror finish, sub-micron flatness |
| Ultra-Fine Polishing | Superfine | 1500#–4000# (F1500–F4000) | Optical ceramics, fine components, ultra-smooth surfaces |
Key Notes
- Grinding wheels: 80#–600# for bulk grinding and finishing of structural/electronic ceramics.
- Lapping/polishing powders: F600–F4000 (often 5–20 μm) for precision ceramic parts, tubes, and substrates.
- Sintered ceramic additives: Submicron (0.5–5 μm) green SiC powder for densification and performance enhancement.
Quick Selection
- Roughing: 120#–240#
- Finishing: 320#–600#
- Precision/lapping: 800#–1200#
- Ultra-fine polish: 1500#–3000#
