INDUSTRY COMPONENT

Silica Base

Silica-based raw material used as the primary component in continuous casting mold powders for steel production.

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Component Specifications

Definition
Silica Base is a fundamental material component in continuous casting mold powders, consisting primarily of silicon dioxide (SiO₂) with controlled particle size distribution and chemical purity. It serves as the main fluxing agent and viscosity modifier in the powder system, forming the glassy slag layer that lubricates the steel strand and controls heat transfer during solidification in the continuous casting process.
Working Principle
The silica base material melts at casting temperatures to form a viscous slag layer between the mold wall and solidifying steel shell. This layer provides lubrication to prevent sticking, controls heat extraction through thermal resistance, absorbs non-metallic inclusions from the steel, and protects the molten steel from oxidation. The viscosity-temperature relationship of the silica-based slag is critical for maintaining proper mold lubrication and heat transfer characteristics.
Materials
High-purity silicon dioxide (SiO₂ ≥ 95%), with controlled levels of alumina (Al₂O₃ < 2%), iron oxide (Fe₂O₃ < 0.5%), and alkaline earth oxides. Particle size distribution: 80% between 45-150 microns. May include minor additives for viscosity adjustment.
Technical Parameters
  • Bulk_density 0.8-1.2 g/cm³
  • Melting_point 1700-1750°C
  • Particle_size 45-150 μm (80% passing)
  • SiO₂_content 95-98%
  • Moisture_content ≤0.5%
  • Al₂O₃_content 0.5-2.0%
  • Fe₂O₃_content ≤0.5%
Standards
ISO 10081-1, DIN 51001, ASTM C146

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Silica Base.

silica base continuous casting powder mold flux steel casting SiO₂ material casting lubricant mold powder component Silica Base in Basic Metal Manufacturing

Parent Products

This component is used in the following industrial products

Continuous Casting Mold Powder

Granulated flux material for continuous casting molds in steel production.

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Engineering Analysis

Risks & Mitigation
  • Inconsistent viscosity control
  • Variable melting behavior
  • Contamination from impurities
  • Particle segregation during handling
FMEA Triads
Trigger: Inconsistent SiO₂ content or impurity levels
Failure: Unstable slag viscosity leading to poor lubrication or uneven heat transfer
Mitigation: Implement strict raw material quality control and batch testing
Trigger: Improper particle size distribution
Failure: Uneven melting and powder flow issues in the mold
Mitigation: Regular particle size analysis and adjustment of grinding parameters
Trigger: Moisture absorption during storage
Failure: Powder agglomeration and inconsistent feeding to mold
Mitigation: Proper storage in sealed containers with desiccants

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
Chemical composition ±1.5%, Particle size distribution ±10% of specified range
Test Method
XRF for chemical analysis, Laser diffraction for particle size, Hot-stage microscopy for melting behavior

Buyer Feedback

★★★★☆ 4.8 / 5.0 (19 reviews)

"The Silica Base we sourced perfectly fits our Basic Metal Manufacturing production line requirements."

"Found 39+ suppliers for Silica Base on CNFX, but this spec remains the most cost-effective."

"The technical documentation for this Silica Base is very thorough, especially regarding technical reliability."

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Frequently Asked Questions

What is the primary function of silica base in mold powders?

The silica base serves as the main fluxing component that melts to form the lubricating slag layer, controlling viscosity and heat transfer during continuous casting.

How does particle size affect silica base performance?

Controlled particle size distribution ensures consistent melting behavior, proper powder flow characteristics, and uniform slag layer formation in the mold.

What purity level is required for silica base in steel casting?

High purity (SiO₂ ≥ 95%) is essential to minimize contamination and maintain consistent chemical and thermal properties in the mold slag.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

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