Crucible Body: Temperature Range 1000-1800°C, Porosity <15%

Q: What is the typical lifespan of a crucible body in continuous operation?

Depending on material and operating conditions, crucible bodies typically last 50-200 cycles; graphite bodies may endure 100+ cycles at 1600°C, while ceramic bodies average 50-80 cycles with proper thermal cycling management.

Q: How does wall thickness affect crucible body performance?

Thicker walls (30-50mm) improve thermal mass and longevity but increase heat-up time; thinner walls (10-20mm) enhance thermal efficiency but reduce mechanical strength. Optimal thickness balances thermal shock resistance with energy consumption.

Component Specifications

Definition

The crucible body is the primary containment vessel within a refractory crucible assembly, engineered to hold and protect molten materials during high-temperature operations. It serves as the core structural element that maintains integrity under thermal stress, chemical attack, and mechanical loading, typically fabricated from specialized refractory ceramics or graphite-based composites to ensure dimensional stability and prolonged service life in foundry, metallurgical, and laboratory applications.

Working Principle

The crucible body operates on the principle of thermal insulation and chemical inertness, utilizing refractory materials with high melting points and low thermal conductivity to contain molten substances while minimizing heat loss. Its design prevents contamination of the melt and withstands repeated thermal cycling through controlled expansion characteristics and structural reinforcement.

Materials

High-alumina ceramics (Al₂O₃ content 85-99%), silicon carbide (SiC), graphite (C), fused silica (SiO₂), or zirconia (ZrO₂) composites; material selection depends on application temperature range (typically 1000-1800°C), chemical compatibility, and thermal shock resistance requirements.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Density	2.2-3.8 g/cm³
Porosity	<15%
Wall Thickness	10-50 mm
Temperature Range	1000-1800°C
Compressive Strength	>50 MPa
Thermal Conductivity	1-30 W/m·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 5022, DIN 51061, ASTM C71

Parent Products

This component is used in the following industrial products

Crucible

A heat-resistant container designed to hold and melt materials at high temperatures within industrial processes.

View Product Details

Refractory Crucible

A high-temperature resistant container used to hold and melt metals or other materials within an induction melting furnace.

View Product Details

Engineering Analysis

Risks & Mitigation

Thermal shock cracking
Chemical erosion from molten metals
Mechanical failure under load
Contamination from material degradation

FMEA Triads

Trigger: Rapid temperature changes exceeding material's thermal shock resistance
Failure: Radial cracking and catastrophic rupture
Mitigation: Implement controlled heating/cooling rates (<100°C/hour), use graded materials, and apply protective coatings

Trigger: Chemical reaction between refractory material and molten alloy
Failure: Progressive wall thinning and contamination
Mitigation: Select chemically compatible materials (e.g., zirconia for reactive metals), monitor melt chemistry, and establish replacement schedules

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

±1.5% on internal dimensions, ±2% on wall thickness, surface roughness Ra ≤ 6.3 μm

Test Method

ASTM C133 for crushing strength, ISO 8894 for thermal conductivity, DIN 51045 for thermal expansion

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

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Manufacturers of Crucible Body

Manufacturer profiles associated with Crucible Body.

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Frequently Asked Questions

What is the typical lifespan of a crucible body in continuous operation?