Ceramic Nozzles Providing Performance In Extreme Temperature Environments With Rapid Heating And Cooling Capabilities

High-Temperature Ceramic Nozzles With Rapid Temperature Adaptation For Extreme Operating Conditions

Manufactured from 99.5% high-purity silicon nitride (Si₃N₄) through specialized formulation design and gas pressure sintering technology, this product demonstrates exceptional thermal shock resistance. Capable of withstanding sudden temperature variations up to 1200°C without cracking, making it ideal for extreme operating conditions with rapid temperature fluctuations.

Primary Applications

• Aircraft engines: Fuel injection systems for combustion chambers

• Steel metallurgy: Secondary cooling nozzles for continuous casters

• Glass manufacturing: Annealing lehr jet systems for float glass

• Chemical equipment: High-temperature reactor injection devices

• Heat treatment furnaces: Rapid quenching cooling systems

Thermal Shock Advantages

✓ Exceptional ΔT resistance: Withstands 1200°C thermal shock
✓ Rapid temperature adaptation: Permits 20°C/s heating/cooling rates
✓ High-temperature stability: Maintains structural integrity at 1600°C
✓ Thermal fatigue resistance: >95% strength retention after 1000 cycles
✓ Quenching-proof: 100% pass rate in water quenching tests

Technical Specifications

Specialized Manufacturing

1. Material optimization: Unique grain boundary phase design

2. Forming process: 200MPa isostatic pressing

3. Gas pressure sintering: 1850°C nitrogen atmosphere

4. Microstructure control: β-Si₃N₄ whisker toughening

5. Performance testing: Water quenching thermal shock test (1200°C⇄RT)

Usage Guidelines

⚠️ Installation: Maintain 0.5-1mm thermal expansion gap
⚠️ Temperature control: Permits rapid heating (≤20°C/s)
⚠️ Cooling restrictions: Avoid localized forced cooling
⚠️ Maintenance: Inspect for thermal shock damage every 500 hours

Service Commitment

• Technical support: Free thermal stress analysis

• Custom solutions: Special thermal shock condition designs

• Emergency response: 12-hour technical support

FAQ

Q: Maximum allowable temperature change rate?
A: Permits up to 20°C/s, recommended ≤15°C/s.

Q: Performance in oxidizing atmospheres?
A: Stable below 1200°C, recommended <1000°C for prolonged use.

Q: How to identify thermal shock damage?
A: Replace when surface cracks >0.1mm or flow variation >10% occurs.