High-purity graphite lids, covers, sleeves, liners, and matching crucible interfaces machined for SiC PVT growth and high-temperature vacuum furnace consumables.
| Metric | Typical Range | Why It Matters |
|---|---|---|
| Assembly Fit | Defined by drawing and mating crucible interface | Lid, liner, and sleeve fit influence vapor containment, thermal symmetry, and repeatability. |
| Purity Target | < 10ppm; < 5ppm reviewed by application | Low ash graphite reduces contamination risk near SiC growth and semiconductor furnace hot zones. |
Decision fit
PVT process engineers and furnace maintenance teams replacing graphite crucible subcomponents by drawing.
Primary proof point
Defined by drawing and mating crucible interface
Lid, liner, and sleeve fit influence vapor containment, thermal symmetry, and repeatability.
RFQ trigger
| Decision Gate | What Buyers Should Check | Acceptance Evidence |
|---|---|---|
| Use-case fit | SiC PVT crucible lid and seed-holder interfaces; High-purity graphite liners and sleeves for crystal growth furnaces; Replacement covers and rings for vacuum furnace hot-zone consumables | Application, furnace duty, and buyer-side validation goal are confirmed before material or process route selection. |
| Parameter baseline | Assembly Fit: Defined by drawing and mating crucible interface; Purity Target: < 10ppm; < 5ppm reviewed by application | Target ranges, report needs, and pass/fail criteria are written into the RFQ or sample approval plan. |
| Risk closure | Assembly interference after thermal cycling: Review tolerance stack-up, thermal expansion assumptions, and mating surfaces before sample machining.; Unclear coating boundary: Mark coated, uncoated, masked, and mating surfaces directly on the drawing for process planning. | Drawing notes, inspection scope, cleaning, coating, packaging, and traceability controls are agreed before repeat supply. |
| RFQ completeness | 2D/3D drawings for the lid, cover, liner, sleeve, ring, or holder; Mating crucible dimensions and assembly clearance requirements; Graphite grade, density, ash target, coating, and cleaning needs; Operating atmosphere, temperature, cycle length, and wear observations | Engineering can return a quote direction without avoidable loops for drawing, purity, coating, quantity, or delivery gaps. |
Confirm furnace duty, drawing revision, target purity, operating atmosphere, and replacement cycle before material selection.
Match isostatic graphite grade, purification depth, coating route, and machining allowance to the process risk.
Machine graphite bodies, lids, rings, heaters, carriers, and insulation interfaces against the approved drawing pack.
Align dimensional checks, purity report format, cleaning, vacuum sealing, cushioning, and crate requirements before shipment.
Review how crucibles, hot-zone parts, and insulation fit a PVT growth workflow.
Check the factory workflow for drawing-based graphite part production.
Align inspection reports, sealing, cushioning, and export crate expectations.
Open the related page to continue technical qualification.
Open the related page to continue technical qualification.
Inquiry Email
Attach DWG, STEP, or PDF drawings and include purity, tolerance, quantity forecast, and delivery country.
Instant Chat
+8618857971991
Use WhatsApp for quick engineering clarification before a formal quote.
Yes. We can quote individual lids, covers, sleeves, liners, rings, holders, and matching crucible subcomponents.
Missing mating dimensions, unclear coating surfaces, and undefined purity or inspection requirements usually create the longest clarification loop.
