Investment Casting Applications
Investment Casting Applications
High-Purity Fused Silica for Precision Ceramic Shell Systems
Fused silica is a critical raw material in investment casting, widely used in ceramic shell systems for producing complex and high-precision metal components.
Fused Silica in Investment Casting
Investment casting, also known as lost wax casting, requires ceramic shell materials with excellent dimensional stability and thermal shock resistance.
Fused silica is widely used in both primary and backup slurry systems, providing stable performance during shell building, drying, dewaxing, and metal pouring processes.
Typical Uses in Investment Casting
Fused silica is commonly used for:
Primary slurry systems
Backup slurry systems
Stucco sands
Precision ceramic shell layers
It is suitable for producing high-precision castings such as aerospace components, automotive parts, valves, pumps, and industrial machinery parts.
Why Use Fused Silica for Investment Casting?
Ultra-Low Thermal Expansion
Maintains excellent dimensional accuracy during heating and cooling.
High Thermal Shock Resistance
Prevents shell cracking during dewaxing and metal pouring.
High Purity SiO₂ Content
Ensures chemical stability and clean casting surfaces.
Smooth Casting Surface Finish
Reduces post-machining and improves final part quality.
Consistent Particle Size Distribution
Ensures repeatable shell thickness and strength.
Recommended Fused Silica Products
We supply fused silica materials specifically designed for investment casting applications:
Fused Silica Grains
20–50 Mesh
50–100 Mesh
Custom grain sizes available
Fused Silica Powders
200 Mesh
325 Mesh
Both A Grade and B Grade fused silica are available depending on surface quality and cost requirements.
Quality Control & Consistency
Stable Quality for Ceramic Shell Systems
At ZNH Refractories, we focus on delivering fused silica with:
Strict chemical composition control
Stable bulk density and grain distribution
Low impurity levels (Fe₂O₃, Al₂O₃)
Reliable batch-to-batch consistency
Our fused silica materials are trusted by investment casting foundries worldwide.
Looking for Reliable Fused Silica for Investment Casting?
Tell us your ceramic shell process, slurry system, and particle size requirements — our technical team will recommend the most suitable fused silica solution.