Quality Control
1.What is fused silcia?
Fused silica is a high-purity amorphous silica material produced by melting natural quartz at extremely high temperatures(2200-2500℃) and rapidly cooling it to eliminate the crystalline structure.
2.Why is fused silica used in investment casting?
During casting, ceramic shells experience extreme temperature changes. The low expansion characteristics of fused silica help reduce-Shell cracking/Thermal stress/Casting defects caused by shell instability.It is commonly used in backup coats and other ceramic shell layers to improve shell reliability.
3.What purity levels of fused silica do you supply?
Typical silica content:
- SiO₂ ≥99.8%
- SiO₂ ≥99.9%
Customized grades can also be discussed based on customer specifications.
4.What particle sizes of fused silica are available?
Common sizes include:
- 10/20 mesh
- 30/50 mesh
- 50/100 mesh
- 100 mesh
- 200 mesh
- 325 mesh
Customized particle sizes are available based on production requirements.
5.How do you control fused silica quality consistency?
Quality consistency is controlled through multiple checkpoints:
- Raw material selection
- Production process monitoring
- Chemical composition testing
- Particle size analysis
- Batch inspection before shipment
For customers requiring higher transparency, we can provide COA, PSD reports, and XRD verification.
6.Do you support customized specifications?
We can adjust product specifications according to customer requirements, including:
- Chemical purity
- Fe₂O₃ level
- Particle size distribution
- Mesh size
- Packaging requirements
Our technical team can discuss suitable grades based on your application.
Need a suitable fused silica grade for your application?
Send us your current specification or application details.
Our team will recommend the most suitable fused silica solution.