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INDUSTRY COMPONENT

Glass Formers

Glass formers are essential additives in continuous casting mold flux that create a protective glassy layer to prevent oxidation and ensure smooth steel surface quality.

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Component Specifications

Definition

Glass formers are chemical compounds added to continuous casting mold flux formulations to lower the melting temperature and promote the formation of a stable, viscous glassy layer. This layer acts as a thermal insulator and lubricant between the molten steel and the copper mold, preventing oxidation, minimizing friction, and controlling heat transfer during the solidification process in steel production.

Working Principle

Glass formers work by reducing the viscosity and melting point of the mold flux through network-forming oxides like SiO2, B2O3, and P2O5. When heated, they create an amorphous glass structure that floats on the molten steel, forming a continuous protective barrier that prevents air contact, absorbs inclusions, and ensures uniform heat extraction for defect-free steel surfaces.

Materials

Typically composed of silica (SiO2), boron oxide (B2O3), phosphorus pentoxide (P2O5), or alumina (Al2O3) in powder or granular form, with purity levels of 95-99.9% and controlled particle size distribution (10-100 microns).

Technical Parameters

SiO2_Content 40-60%
Particle_Size D50: 20-50 μm
Basicity_Index 0.8-1.2
Melting_Temperature 900-1200°C
Viscosity_at_1300°C 0.5-2.0 Pa·s

Standards

ISO 13320, DIN 51001

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Glass Formers.

Parent Products

This component is used in the following industrial products

Continuous Casting Mold Flux

Powdered material for steel continuous casting mold protection and lubrication

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Engineering Analysis

Risks & Mitigation

Inconsistent viscosity leading to poor lubrication
Contamination from impurities causing surface defects
Thermal instability under high-temperature conditions

FMEA Triads

Trigger: Incorrect SiO2 ratio in formulation
Failure: High viscosity causing poor glass layer formation and increased friction
Mitigation: Implement strict quality control on raw material composition and perform regular viscosity testing

Trigger: Moisture absorption during storage
Failure: Reduced effectiveness and potential explosion hazards during heating
Mitigation: Use airtight containers and controlled humidity storage environments

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance

±2% on chemical composition, ±5% on particle size distribution

Test Method

X-ray fluorescence (XRF) for composition analysis, rotational viscometry for viscosity measurement

Buyer Feedback

★★★★☆ 4.6 / 5.0 (19 reviews)

"Found 43+ suppliers for Glass Formers on CNFX, but this spec remains the most cost-effective."

"The technical documentation for this Glass Formers is very thorough, especially regarding technical reliability."

"Reliable performance in harsh Basic Metal Manufacturing environments. No issues with the Glass Formers so far."

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A high-speed rotating impeller used in molten metal degassing systems to inject inert gases and remove impurities.

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High-temperature sampling probe for molten metal composition analysis in metallurgical processes

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Level sensor for continuous monitoring of molten metal height in industrial furnaces and casting systems.

Actuator Interface

Actuator interface for precise molten metal level control in casting systems

Frequently Asked Questions

What is the primary function of glass formers in continuous casting?

The primary function is to form a protective glassy layer that prevents oxidation of molten steel, lubricates the mold-steel interface, and controls heat transfer for smooth solidification.

How do glass formers affect steel surface quality?

They ensure uniform heat extraction and reduce friction, minimizing surface defects like cracks, wrinkles, and inclusions, resulting in higher-quality steel products.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.