RFQ Preparation Checklist
- Complete assembly drawings
- Material grade requirements
- Delivery schedule
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Semiconductor Thermal Field
Custom graphite and C/C composite thermal fields for crystal pulling (CZ), directional solidification (DSS), and advanced thermal processing.
Target Buyer:Equipment builders and fab maintenance.
Solution Highlights
- Complete assembly supply
- High-purity options
- C/C composite integration for strength
Common Use Cases
- CZ Silicon Pulling
- Advanced Thermal Processing
Implementation Focus
- Assembly tolerances
- Thermal insulation efficiency
Application Evaluation Matrix
| Evaluation Metric | Typical Range | Buyer Relevance |
|---|---|---|
| Assembly Tolerance | +/- 0.1 mm | Ensures smooth installation. |
| Graphite Grade | Isostatic or fine-grain graphite by load and geometry | Grade selection controls strength, machinability, resistivity, and hot-zone life. |
| Machining Tolerance | +/-0.01 mm to +/-0.10 mm by feature | Assembly interfaces, heater slots, and shield gaps need different inspection levels. |
| Atmosphere Fit | Vacuum or inert gas, oxidation risk reviewed separately | Graphite performs best when oxygen exposure and cleaning chemistry are controlled. |
Application Selection Logic
| Decision Factor | Selection Logic | Buyer Check |
|---|---|---|
| Heat generation or shielding role | Heaters need resistivity and wall-section control; shields and supports need stability and fit. | Separate electrical, thermal, and mechanical CTQ features on the drawing. |
| Assembly interface | Graphite hot-zone parts should be selected as a matched assembly when gaps affect heat loss or arcing risk. | Provide chamber size, mating parts, power supply, and installation clearances. |
| Atmosphere exposure | Vacuum and inert gas are baseline; oxygen, water vapor, or aggressive cleaning steps require extra review. | Define atmosphere, ramp rate, cleaning method, and maximum temperature. |
Application Delivery and QC Flow
| Stage | Delivery / QC Checkpoint | Buyer Evidence |
|---|---|---|
| 1. Assembly review | Map heater, shield, insulation, support, and chamber interfaces before quoting. | Hot-zone layout, mating-part drawings, power data, and atmosphere notes. |
| 2. Material routing | Select graphite grade by resistivity, strength, machinability, and cost target. | Grade recommendation and risk notes for high-stress or high-current features. |
| 3. Machining control | Control wall thickness, slots, bolt holes, shield gaps, and fragile edges. | Dimensional report for assembly and electrical CTQ features. |
| 4. Fit and surface check | Inspect cracks, chips, surface finish, and installation-critical dimensions. | Visual and dimensional acceptance record. |
| 5. Export protection | Pack heaters, shields, rings, and hot-zone parts against vibration and edge damage. | Foam-nest or crate plan for fragile assemblies. |
Risk and Mitigation
- Thermal stress cracking: Replacing critical graphite parts with C/C composites.
Recommended Products
Buyer FAQ
Do you offer design support?
We offer DFM (Design for Manufacturability) support based on your thermal designs.
How do buyers avoid wrong graphite grade selection?
Share the process role of the part, not only the drawing. Heating, shielding, support, and insulation interfaces require different graphite properties and inspection focus.
Can a hot-zone part be quoted from a worn sample?
Yes, but a worn sample should be paired with chamber dimensions, mating-part photos, and operating conditions so reverse engineering does not copy wear damage.
What inspection evidence is practical for graphite hot-zone parts?
Most programs use dimensional reports for CTQ features, visual inspection for chips or cracks, and packing photos for fragile export shipments.
Related Resources
From Application Review to RFQ
- Select matching graphite, SiC coated, or C/C products for the validated process window.
- Review purity and ash-control capability before specifying trace-metal acceptance criteria.
- Prepare drawing-based custom part inputs including CAD files, tolerances, surface finish, and volume forecast.
- Send an application RFQ with furnace model, temperature, atmosphere, replacement cycle, and destination country.
Inquiry Email
Include process, product type, drawing status, purity/coating target, dimensions, quantity forecast, operating conditions, and delivery date.
Instant Chat
WhatsApp Engineering Support
Best for quick drawing checks, process fit questions, and RFQ clarification.