1. Product Overview
The double-thread integrated ceramic dispensing needle is a monolithic precision fluid dispensing consumable for high-speed automated dispensers. It adopts an integrated one-piece ceramic structure with dual external threads machined directly on the base, eliminating welded or assembled joints. Compared with split-type metal needles, it delivers consistent micro-volume dispensing for epoxy, silver paste, fluorescent glue, solder paste and other abrasive or corrosive fluids.
The smooth, dense ceramic inner bore reduces glue residue and clogging. The double-thread locking structure ensures firm assembly with dispensing valve seats, improves concentricity, resists vibration loosening and prevents leakage during continuous mass production. Widely used in semiconductor packaging, LED, MEMS, automotive electronics and precision optical bonding processes.
2. Core Features & Advantages
- Integrated Monolithic Ceramic Structure One-piece forming without welding, bonding or press-fit seams. No joint gaps to trap glue, avoiding hidden leakage and concentricity deviation common in assembled nozzles.
- Double-Thread Locking Base Dual-thread design increases meshing area. Better vibration resistance, stable sealing, easy installation and replacement, compatible with mainstream dispensing valves.
- High-Purity Alumina Ceramic Material Excellent wear resistance, chemical inertness and non-stick property. Resists abrasion from filler-laden glues such as silver paste and solder paste; far longer service life than stainless steel tips.
- Ultra-Smooth Micro Inner Orifice Precision grinding and polishing of the flow channel, low surface roughness. Smooth glue outflow, minimal tailing, stable dot size and high repeatability for ultra-fine dots.
- Micro Orifice Availability Supports tiny inner diameters starting from 0.01 mm, suitable for ultra-micro dispensing and narrow gap coating requirements.
- Customizable Geometry Custom orifice size, outer diameter, needle length, taper angle and thread specification based on dispenser model and fluid characteristics.
3. Typical Applications
- Semiconductor packaging: Die attach epoxy, silver paste dispensing, underfill
- Optoelectronics: LED / Mini LED / Micro LED fluorescent glue coating
- Automotive electronics: Sensor module adhesive, sealant micro dispensing
- Precision assembly: Camera module, lens bonding, MEMS packaging
- Applicable fluids: Silver paste, solder paste, epoxy resin, silicone, UV glue, abrasive filled adhesives
4. Technical Specification Table
表格
| Item | Technical Parameter |
|---|---|
| Product Name | Double-Thread Integrated Ceramic Dispensing Needle |
| Material | 99.9% High-Purity Alumina Ceramic |
| Structure | One-piece integrated, double external thread base |
| Inner Diameter | Φ0.01 mm ~ Φ0.5 mm (customizable) |
| Outer Diameter | Φ0.1 mm ~ Φ1.0 mm (customizable) |
| Needle Total Length | 3 mm ~ 15 mm (customizable) |
| Taper Angle | 15° / 30° / 45° or custom |
| Dimensional Tolerance | ±0.002 mm |
| Inner Surface Roughness | Ra ≤0.02 μm |
| Working Pressure | 0 ~ 1.0 MPa |
| Operating Temperature | -20℃ ~ 450℃ |
| Thread Specification | Custom double thread (M3 / M3.5 / M4 optional) |
| Fluid Compatibility | Silver paste, solder paste, epoxy, UV glue, silicone, abrasive filled adhesives |
| Mounting Method | Threaded locking to dispensing valve |
5. Operation & Maintenance Notes
- Ceramic is brittle; avoid collision, dropping and lateral force to prevent chipping.
- Select proper inner diameter according to glue viscosity. Fine orifices are prone to clogging with high-filler pastes.
- Clean the flow channel promptly after production; use ultrasonic cleaning for cured glue residue.
- Inspect orifice wear, chipping and glue buildup regularly. Replace when dot size becomes unstable.
- Control dispensing pressure and stroke reasonably to reduce needle wear and glue tailing.
