Foundry Casting Applications
High-Purity Fused Silica for Stable & Defect-Free Castings
Fused silica is widely used in iron and steel foundries due to its extremely low thermal expansion, excellent thermal shock resistance, and consistent chemical purity.
Overview
Fused Silica for Foundry Casting
In foundry casting processes, fused silica plays a critical role in controlling thermal expansion, preventing casting defects, and improving surface quality.
Compared with traditional silica sand, fused silica offers superior performance under rapid heating and cooling conditions, making it ideal for gray iron, ductile iron, and steel castings.
Typical Foundry Applications
Typical Applications in Foundries
Fused silica is commonly used in:
Foundry coatings and facing sands
Molding and core sands
High-temperature casting systems
Special alloy and precision castings
Its stable physical properties help reduce common foundry issues such as veining, scabbing, and sand expansion defects.
Key Benefits
Why Use Fused Silica in Foundry Casting?
Ultra-Low Thermal Expansion
Minimizes veining, cracking, and dimensional distortion.
Excellent Thermal Shock Resistance
Performs reliably under repeated heating and cooling cycles.
High Purity SiO₂ Content
Ensures chemical stability and compatibility with molten metal.
Improved Casting Surface Finish
Reduces post-processing and cleaning costs.
Consistent Grain Size Distribution
Provides predictable and repeatable casting performance.
Recommended Grades & Sizes
Recommended Fused Silica Products for Foundry Use
We supply fused silica materials suitable for foundry applications, including:
Fused Silica Grains
0–0.2 mm
0.2–0.5 mm
Custom particle size on request
Fused Silica Powders
200 mesh
325 mesh
Both A Grade and B Grade fused silica are available depending on casting requirements and cost considerations.
Quality & Supply Assurance
Reliable Quality & Stable Supply
At ZNH Refractories, we focus on providing consistent and reliable fused silica for industrial customers worldwide.
Strict chemical composition control
Stable bulk density and particle distribution
Professional export packaging
Reliable global logistics support
Our fused silica products are trusted by foundries across Europe, North America, and Asia.
Call to Action
Looking for Reliable Fused Silica for Your Foundry?
Tell us your casting type, process, and required particle size — our technical team will recommend the most suitable fused silica solution for your foundry.