Editorial Technical Reference

Water-Cooled Crucible

This page explains how Water-Cooled Crucible is classified within Basic Metal Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.

Technical Definition & Core Assembly

A crucible with integrated water cooling channels designed to contain and process high-temperature materials while maintaining controlled temperature through active cooling.

Representative product image. Confirm appearance and specifications with the manufacturer.

Product Specifications

Technical details and manufacturing context for Water-Cooled Crucible

Definition
A water-cooled crucible is a specialized containment vessel used in industrial systems to hold molten materials or substances undergoing high-temperature processing. Its integrated water cooling system prevents overheating of the crucible structure, maintains material temperature control, and protects surrounding equipment from excessive thermal radiation. This component is commonly applied in metal melting, crystal growth, and chemical synthesis processes where precise thermal management is critical.

The crucible is constructed from materials such as copper, stainless steel, or graphite, each selected for specific thermal and chemical compatibility. Copper offers high thermal conductivity, stainless steel provides corrosion resistance, and graphite excels in high-temperature stability. The cooling system circulates water through channels or jackets integrated into the crucible walls, absorbing heat and transferring it away from the system. This active cooling ensures safe operating temperatures, prevents structural failure, and minimizes unwanted material reactions.

Key parameters for selection include cooling water flow rate (10–30 L/min), inlet temperature (5–35 °C), maximum operating temperature (1600–2000 °C), and cooling water pressure (0.2–0.6 MPa). Physical dimensions such as inner diameter (50–500 mm), outer diameter (80–600 mm), height (100–800 mm), and wall thickness (5–20 mm) are customizable. Material grade (e.g., 316L stainless steel per ASTM A240) and surface roughness (Ra 0.8–1.6 µm) affect performance and contamination resistance. Leak test pressure (1.5 MPa) ensures water jacket integrity, and weight ranges from 20–200 kg depending on size and material.

When selecting a water-cooled crucible, verify model-specific values and standards with the legal manufacturer or supplier. Confirm that the cooling system meets your process requirements, and ensure proper installation and maintenance to achieve reliable operation.
Working Principle
The crucible contains materials for high-temperature processing while water circulates through integrated channels or jackets in its walls. This water absorbs heat from the crucible, transferring thermal energy away from the system to maintain safe operating temperatures and prevent structural failure or unwanted material reactions. The cooling water flow rate, inlet temperature, and pressure are critical parameters that must be controlled to ensure effective heat removal. As the water absorbs heat, it may exit at a higher temperature, and the system must be designed to handle this thermal load. The crucible material's thermal conductivity and wall thickness influence heat transfer efficiency. Proper cooling prevents overheating of the crucible structure, protects surrounding equipment from thermal radiation, and maintains the desired temperature profile for the material being processed.
Common Materials
Copper, Stainless Steel, Graphite
Technical Parameters
ParameterTypical rangeNotes & selection driver
Cooling Water Flow Rate10–30 L/minRequired to maintain temperature stability
Cooling Water Inlet Temperature5–35 °CHigher temperatures reduce cooling efficiency
Maximum Operating Temperature1600–2000 °CDepends on crucible material
Cooling Water Pressure0.2–0.6 MPaEnsure adequate flow rate
Inner Diameter50–500 mmCustom sizes available
Outer Diameter80–600 mmIncludes cooling jacket
Height100–800 mmCustom heights available
Wall Thickness5–20 mmAffects thermal conductivity and strength
Material Grade316LStainless steel for corrosion resistanceASTM A240
Surface RoughnessRa 0.8–1.6 µmSmooth finish reduces contamination
Leak Test Pressure1.5 MPaEnsures water jacket integrity
Weight20–200 kgDepends on size and material

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

Components / BOM
  • Crucible Body
    The crucible itself: holds the melt and takes the thermal shock of each cycle.
  • Cooling Jacket
    Encases the crucible with channels for water circulation to absorb and transfer heat
    Material: Copper or Stainless Steel
  • Water Inlet/Outlet Ports Part
    Connections for cooling water supply and return lines to the circulation system
    Material: Stainless Steel
  • Thermal Insulation Layer Optional Part
    Reduces heat transfer to external environment and improves cooling efficiency
    Material: Ceramic Fiber or Refractory Material

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Water-Cooled Crucible.

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: Internal: 0-5 bar (process dependent), Cooling circuit: 3-10 bar operating, 15 bar max
flow rate: Cooling water: 10-100 L/min (depending on heat load)
temperature: Ambient to 1800°C (material dependent), cooling maintains surface <200°C
slurry concentration: Up to 60% solids by weight (viscosity dependent)
Media Compatibility
✓ Molten metals (aluminum, copper alloys) ✓ High-temperature chemical synthesis materials ✓ Glass and ceramic melts
Unsuitable: Hydrofluoric acid or highly corrosive halogen environments
Sizing Data Required
  • Maximum heat generation rate (kW)
  • Required cooling water temperature differential (ΔT)
  • Crucible volume capacity (liters)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Corrosion-induced leakage
Cause: Chemical attack from water impurities (e.g., chlorides, dissolved oxygen) or process contaminants compromising the crucible's metallic or refractory lining, leading to pitting, thinning, and eventual breach of the cooling jacket.
Thermal fatigue cracking
Cause: Cyclic thermal stresses from repeated heating and cooling cycles, exacerbated by rapid temperature changes or uneven heat distribution, causing cracks in the crucible wall or cooling passages that can lead to water ingress or structural failure.
Maintenance Indicators
  • Visible water leakage or persistent moisture around the crucible base or connections, indicating a breach in the cooling system.
  • Abnormal temperature readings (e.g., localized hot spots on the crucible exterior) or audible hissing/steam sounds, suggesting inadequate cooling or internal water boiling due to blockages or flow restrictions.
Engineering Tips
  • Implement a closed-loop, treated water cooling system with corrosion inhibitors and regular water quality monitoring (pH, conductivity, impurity levels) to minimize chemical degradation and scaling.
  • Establish controlled heating and cooling ramps during operation and shutdowns to reduce thermal shock, and use infrared thermography periodically to detect and address uneven temperature distributions before cracks develop.

Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.

Compliance & Manufacturing Standards

Applicable Standards
ASTM A240/A240M - Standard Specification for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications CE Marking - Pressure Equipment Directive (PED) 2014/68/EU

Quoted from the published standard.

Manufacturing Precision
  • Bore Diameter: +/-0.05mm
  • Water Jacket Wall Thickness: +/-0.5mm
Quality Inspection
  • Hydrostatic Pressure Test
  • Visual and Dimensional Inspection

Manufacturers of Water-Cooled Crucible

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Supply Chain Commonly Integrated Components

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A system that regulates and controls the flow, pressure, and composition of gases used in molten metal degassing processes.

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Reagent Injection System

A system designed to precisely inject desulfurization reagents into molten metal within a desulfurization reactor

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Lance Manipulator

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Frequently Asked Questions

What materials are available for water-cooled crucibles?

Water-cooled crucibles are available in copper, stainless steel, and graphite. Copper offers high thermal conductivity, stainless steel provides corrosion resistance, and graphite is suitable for very high temperatures. The choice depends on the specific application and material compatibility.

What is the typical cooling water flow rate required?

The cooling water flow rate typically ranges from 10 to 30 L/min, depending on the crucible size and heat load. It is essential to maintain an adequate flow rate to ensure effective heat removal and temperature stability.

Can the dimensions be customized?

Yes, custom sizes are available. The inner diameter can range from 50 to 500 mm, outer diameter from 80 to 600 mm, height from 100 to 800 mm, and wall thickness from 5 to 20 mm. Confirm exact dimensions with the manufacturer for your application.

What is the maximum operating temperature?

The maximum operating temperature depends on the crucible material and typically ranges from 1600 to 2000 °C. Higher temperatures may reduce cooling efficiency, so verify the specific limit for the chosen material and design.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification
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