Refractory Body: Operating Temperature 1600-1800°C

Component Specifications

Definition

A refractory body is a specialized ceramic component designed to withstand extreme temperatures, thermal shock, and corrosive environments in industrial processes. It serves as the core structural element in refractory sleeves and tips, providing insulation and protection to surrounding equipment while maintaining dimensional stability under continuous thermal cycling.

Working Principle

Operates by utilizing ceramic materials with high melting points and low thermal conductivity to create a thermal barrier. The refractory body absorbs and dissipates heat energy while preventing thermal transfer to adjacent components, maintaining process temperature stability and protecting metallic parts from degradation.

Materials

Alumina (Al2O3) 85-99%, Zirconia (ZrO2) stabilized with Yttria, Silicon Carbide (SiC), Mullite (3Al2O3·2SiO2). Typical density: 3.2-4.5 g/cm³, porosity: 5-15%, thermal conductivity: 2-6 W/m·K at 1000°C.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Compressive Strength	150-400 MPa
Maximum Service Life	200-1000 cycles
Dimensional Tolerance	±0.5% or ±0.2mm
Operating Temperature	1600-1800°C
Thermal Shock Resistance	ΔT > 500°C
Thermal Expansion Coefficient	5-8 × 10^-6 /K

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Standards

ISO 5019, DIN 1089-3, ASTM C20

Parent Products

This component is used in the following industrial products

Refractory Sleeve or Tip

A refractory component at the end of a stopper rod that controls molten metal flow in continuous casting.

View Product Details

Engineering Analysis

Risks & Mitigation

Thermal cracking from rapid temperature changes
Chemical corrosion from molten materials
Mechanical failure from thermal expansion mismatch
Reduced insulation efficiency over time

FMEA Triads

Trigger: Insufficient thermal shock resistance
Failure: Crack formation and structural failure
Mitigation: Use materials with higher fracture toughness and optimized thermal expansion coefficients

Trigger: Chemical interaction with process materials
Failure: Surface degradation and reduced thickness
Mitigation: Apply protective coatings or use chemically inert materials like high-purity alumina

Trigger: Improper installation or thermal cycling
Failure: Premature failure and process interruption
Mitigation: Follow manufacturer installation guidelines and implement controlled heating/cooling cycles

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

Dimensional tolerance ±0.5% or ±0.2mm, thermal expansion within 5-8 × 10^-6 /K, density variation ±3%

Test Method

ISO 5019 for dimensional checks, ASTM C20 for thermal properties, DIN 51045 for chemical resistance

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

Check the legal entity, factory address, ownership, certifications, and direct contacts.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Manufacturers of Refractory Body

Manufacturer profiles associated with Refractory Body.

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Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review

Frequently Asked Questions

What is the maximum operating temperature for a standard refractory body?

Standard refractory bodies typically operate at 1600-1800°C, with specialized formulations reaching up to 2000°C for specific applications.

How does thermal shock resistance affect refractory body performance?

Thermal shock resistance determines how quickly the component can withstand temperature changes without cracking. Higher resistance (ΔT > 500°C) ensures longer service life in cyclic heating applications.

What maintenance is required for refractory bodies?

Regular visual inspection for cracks, measurement of dimensional changes, and monitoring of thermal performance. Replacement is typically based on cycle count or visible degradation.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Preliminary Technical Classification

This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

Refractory Body