RFQ Checklist
- Shaft length and diameter
- Rotor head design (provide drawing)
- Expected lifespan target
Anti-oxidation treated graphite rotors and shafts for molten aluminum degassing. Designed for long life and efficient hydrogen removal in foundries.
| Metric | Typical Range | Why It Matters |
|---|---|---|
| Service Life | 30 - 60 days (varies by usage) | Reduces downtime and consumable costs. |
| Oxidation Resistance | Anti-oxidation treatment by melt temperature and cycle | Rotor life is usually limited by oxidation and attack near the liquid line. |
| Thread Engagement | Matched shaft and rotor-head thread design | Thread mismatch causes wobble, breakage, or difficult field replacement. |
| Bubble Dispersion | Impeller geometry matched to degassing practice | Gas dispersion efficiency affects hydrogen removal and melt quality. |
| Decision Factor | Selection Logic | Buyer Check |
|---|---|---|
| Melt-line attack | Select anti-oxidation treatment and shaft design around the most exposed liquid-line region. | Provide melt temperature, treatment cycle, and current breakage location. |
| Degassing efficiency | Rotor-head geometry must match gas flow and bubble dispersion requirements. | Send rotor drawing, shaft length, rotation speed, and gas flow assumptions. |
| Thread compatibility | Matched shaft and rotor-head threads reduce wobble and field replacement issues. | Specify thread standard and whether assembled or separate supply is preferred. |
| Stage | Production / QC Checkpoint | Buyer Evidence |
|---|---|---|
| 1. Degassing process review | Confirm melt temperature, rotor speed, gas flow, shaft length, and service-life target. | Rotor drawing, current lifetime, and failure photos. |
| 2. Graphite and treatment route | Select graphite grade, anti-oxidation treatment, and shaft or head configuration. | Material and treatment proposal tied to molten-aluminum exposure. |
| 3. Machining and assembly | Machine shaft, rotor head, thread, and impeller geometry for stable operation. | Dimensional and thread-fit inspection. |
| 4. Surface and balance check | Review coating or impregnation surface, straightness, and assembled fit. | Visual check and assembly photos. |
| 5. Export packing | Protect long shafts and rotor heads from bending, thread impact, and moisture. | Separated or assembled packing plan. |
Yes, we supply them assembled or separately, with precision-matched threads.
Oxidation and attack near the liquid line are common limits, followed by thread mismatch, shaft bending, or rotor-head breakage.
Ordering together improves thread matching and balance, but separate supply is possible when the interface standard is clear.
Send shaft length, rotor-head drawing, melt temperature, rotation speed, gas flow, current lifetime, and failure photos.
Inquiry Email
Include process, product type, drawing status, purity/coating target, dimensions, quantity forecast, operating conditions, and delivery date.
Instant Chat
+8618857971991
Best for quick drawing checks, process fit questions, and RFQ clarification.