Introduction
When precision is the priority, the grain size of your refractory material makes all the difference. Our Fused Silica A Grade (20-50 Mesh) is specifically processed for industries that require a finer consistency without compromising the ultra-high purity and thermal stability that the ZNH brand is known for.
Understanding the 20-50 Mesh Specification
The 20-50 Mesh range (approximately 0.3mm to 0.85mm) represents a medium-fine grain. This specific sizing is achieved through advanced crushing and multi-stage screening processes, ensuring:
- Particle Uniformity: A tight distribution that allows for high packing density.
- High Surface Area: Ideal for creating smooth, high-definition molds and coatings.
- Low Dust Content: Enhanced material handling and a cleaner working environment.
Core Applications
Investment Casting (Shell Building): Used as a secondary sand or backup stucco to create high-strength ceramic shells with excellent surface finish.
Electronic Packaging: Its low dielectric constant and low thermal expansion make it a perfect filler for epoxy molding compounds (EMC).
Specialty Refractories: Ideal for producing crucibles and flow control components used in the solar and semiconductor industries.
Why Our A-Grade Matters?
In the 20-50 Mesh size, even minor impurities can cause structural flaws. Our A Grade material ensures:
- SiO2≥99.9%: Minimal trace elements to prevent chemical reactions at high temperatures.
- Thermal Shock Resistance: The material can withstand rapid cooling and heating cycles without cracking.
- Iron-Free Processing: We use specialized non-metallic grinding equipment to prevent iron contamination.
Conclusion
For projects where every millimeter counts, our Fused Silica A Grade 20-50 Mesh provides the consistency and performance you need. Contact ZNH Refractories today for technical data sheets or a custom quote.
Looking for a coarser grain? Check out our Fused Silica 4-10 Mesh article.
