Overview
Ceramic Casting Quartz Powder is a high-purity silica-based material widely used in precision casting and ceramic industries. Its primary component is silicon dioxide (SiO2), derived from natural quartz or synthesized through high-temperature processes. The powder is valued for its uniform particle size, thermal stability, and chemical inertness, making it a critical material in applications requiring high-temperature resistance and dimensional stability. In industrial settings, the powder is often classified by mesh size (e.g., 200-325 mesh) to meet specific casting or refractory requirements. Its low thermal expansion coefficient minimizes cracking during thermal cycles, while its high melting point ensures durability in extreme conditions.
Physical and Chemical Properties
Ceramic Casting Quartz Powder exhibits a crystalline structure with a Mohs hardness of 7, providing abrasion resistance in refractory applications. Its density ranges between 2.2-2.6 g/cm³, and it remains chemically inert to most acids except hydrofluoric acid. The powder's low thermal expansion (0.5×10⁻⁶/°C) ensures minimal deformation under heat, critical for precision casting molds. Particle size distribution is tightly controlled, typically ranging from 10 to 150 microns, to optimize flowability and packing density. The material's high dielectric strength and UV transparency also make it suitable for specialized electronic and optical applications.
Main Applications
The primary use of Ceramic Casting Quartz Powder is in investment casting, where it forms the shell molds for aerospace and automotive components. Its refractory properties enable it to withstand molten metal temperatures exceeding 1600°C. In ceramics, it serves as a flux in glazes and a strengthening agent in porcelain bodies. Other applications include foundry molds for metal casting, fire-resistant coatings, and filler material in epoxy systems. The powder's purity (≥99.5% SiO2) ensures minimal contamination in high-performance applications like semiconductor manufacturing.
Safety and Storage
While chemically inert, the fine particulate form requires handling precautions to avoid respiratory irritation. NIOSH-approved dust masks and protective eyewear are recommended during bulk processing. Storage should avoid moisture to prevent clumping; sealed containers in dry environments are ideal. Spills should be cleaned with wet methods to minimize airborne dust. Disposal follows local regulations for non-hazardous silica materials. Long-term exposure to airborne particles requires workplace air monitoring per OSHA standards.
B2B Procurement Guide
When sourcing Ceramic Casting Quartz Powder, prioritize suppliers who provide material safety data sheets (MSDS) and batch-specific purity certificates. Key specifications to verify include SiO2 content (≥99.5%), Fe2O3 impurities (<0.01%), and mesh size consistency. Bulk shipments should use moisture-resistant packaging. Pricing varies by quantity (e.g., truckload discounts) and particle size refinement. Sample testing for thermal shock resistance and linear expansion is advisable for critical applications. Lead times may extend during peak foundry seasons, so advance orders are recommended.
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