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| Quantity: | |
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103
HaoRui
custom103
This stepped ceramic sleeve sits between the nozzle and the gun body and does three jobs at once: it blocks heat from reaching the gun body, it isolates the nozzle electrically, and its wear-resistant alumina surface keeps the nozzle positioned even after thousands of hours of abrasive flow.
Because every gun has its own geometry, we machine each sleeve to the customer's drawing — step diameters, concentricity and face distances are all ground, so the sleeve drops into the existing assembly without reworking the metal parts.
| Material | 99% Al2O3 alumina ceramic |
|---|---|
| Density | 3.80 – 3.85 g/cm³ |
| Max. service temperature | 1600°C |
| Concentricity | ±0.01 mm |
| Surface roughness (ground) | Ra ≤ 0.4 μm |
| Hardness | ≈ 1500 HV (Mohs 9) |
| Dimensions | Per customer drawing |
Typical values for reference; custom grades and dimensions per drawing.
Welding and plasma gun nozzle insulation
Spray and coating gun ceramic spacers
Automated dispensing and welding stations
Thermal spray equipment
Any gun-type assembly needing heat + voltage isolation
Haorui Industrial has machined non-standard advanced ceramics since 2006 (ISO 9001). Send us a 2D drawing (PDF/DWG) or a sample: we quote with tolerance and material recommendation, produce 1–10 piece prototypes in 7–15 days, and keep the process data for repeat batches. Materials available: 95% / 99% / 99.5% Al2O3, ZrO2, Si3N4, SiC, AlN, macor.
Yes — send the drawing or the used part, we measure and reproduce it in alumina ceramic, usually with improved concentricity.
Alumina handles repeated nozzle heating cycles well; cracking usually comes from mechanical over-clamping, which we help you avoid with correct fit tolerances.
In hot or abrasive service, alumina typically lasts many times longer because it neither melts, carbonises nor wears round.
Quality you can verify: Haorui Industrial operates an ISO 9001:2015 certified quality management system (scope: precision mechanical ceramics parts), and our alumina and zirconia ceramics are RoHS 2.0 compliant — tested per IEC 62321 by an accredited third-party laboratory. We exhibit every year at CIOE (China International Optoelectronic Exposition) and semiconductor industry expositions in Shenzhen — visit our booth to see the parts in person.
