Structured Manufacturing Data (2026)

Tundish

Based on aggregated insights from structured factory profiles within the CNFX directory, the standard Tundish used in the Basic Metal Manufacturing sector typically supports operational capacities ranging from standard industrial configurations to heavy-duty production requirements.

Technical Definition & Core Assembly

A canonical Tundish is characterized by the integration of Refractory Lining and Submerged Entry Nozzle (SEN). In industrial production environments, manufacturers listed on CNFX commonly emphasize Refractory Lining (e.g., Magnesia-based) construction to support stable, high-cycle operation across diverse manufacturing scenarios.

A refractory-lined vessel used in continuous casting to receive molten metal from a ladle and distribute it evenly to the mold.

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Product Specifications

Technical details and manufacturing context for Tundish

Definition
In the industrial system of continuous casting, the tundish serves as a critical intermediate reservoir between the ladle and the mold. It receives molten steel from the ladle, maintains a steady metal level, and distributes the flow through multiple nozzles into the mold(s) to ensure uniform casting conditions and product quality.
Working Principle
The tundish operates by receiving a stream of molten metal from a ladle positioned above it. The refractory lining maintains the metal's temperature. The internal geometry, including dams, weirs, and baffles, controls the flow path, promotes inclusion flotation, and ensures thermal homogeneity. The molten metal then exits through one or more submerged entry nozzles at the bottom, feeding into the mold(s) below at a controlled rate.
Common Materials
Refractory Lining (e.g., Magnesia-based), Steel Shell
Technical Parameters
  • Capacity or working volume of the tundish (tonnes) Per Request
Components / BOM
  • Refractory Lining Part
    Insulates the steel shell, maintains molten metal temperature, and resists chemical erosion.
    Material: Magnesia, alumina, or other ceramic materials.
  • Submerged Entry Nozzle (SEN)
    Controls the flow of molten metal from the tundish into the mold, preventing oxidation and turbulence.
    Material: Refractory material (e.g., alumina-graphite).
  • Flow Control Device (Slide Gate or Stopper Rod)
    Regulates the flow rate of molten metal exiting the tundish through the nozzle.
    Material: Refractory components and mechanical actuators.

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Tundish.

Distributor continuous casting tundish refractory lining magnesia-based tundish for steel production tundish flow control slide gate systems submerged entry nozzle tundish components industrial tundish maintenance and repair

Applied To / Applications

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

Continuous Casting Machine
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Molten Metal Distribution System
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Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: Atmospheric to slight positive pressure (0-0.5 bar gauge), primarily hydrostatic head from metal column
flow rate: 1-6 tons/min (typical steel), up to 12 tons/min for high-capacity systems
temperature: 1500-1600°C (typical steel casting), up to 1700°C with specialized refractories
slurry concentration: Not applicable - designed for pure molten metals, not slurries
Media Compatibility
✓ Molten steel (carbon, stainless, alloy) ✓ Molten copper and copper alloys ✓ Molten aluminum and aluminum alloys
Unsuitable: Highly corrosive molten metals (e.g., titanium, zirconium) or environments with rapid temperature cycling
Sizing Data Required
  • Required throughput (tons/hour)
  • Number of strands/molds to feed
  • Ladle capacity and casting sequence timing

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Thermal fatigue cracking
Cause: Cyclic heating and cooling during steel casting operations causing expansion/contraction stress
Refractory lining erosion
Cause: Chemical attack from molten steel slag and mechanical wear from metal flow
Maintenance Indicators
  • Visible cracks or bulges in refractory lining
  • Abnormal temperature readings on infrared scans indicating lining degradation
Engineering Tips
  • Implement strict preheating protocols before casting to minimize thermal shock
  • Use advanced refractory materials with superior corrosion resistance and install sacrificial wear plates in high-erosion zones

Compliance & Manufacturing Standards

Reference Standards
ISO 9001:2015 - Quality Management Systems ASTM A36/A36M - Standard Specification for Carbon Structural Steel EN 10025-2:2019 - Hot rolled products of structural steels
Manufacturing Precision
  • Wall Thickness: +/-2% of nominal thickness
  • Overall Dimensions: +/-5mm on length and width
Quality Inspection
  • Visual Inspection for surface defects and weld integrity
  • Ultrasonic Testing for internal flaws and thickness verification

Factories Producing Tundish

Manufacturer profiles with relevant production capability in China

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Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

Technical documentation
4/5
Manufacturing capability
4/5
Inspection readiness
5/5
Supplier transparency
3/5

These scores are example evaluation dimensions, not real customer ratings, country-specific buyer feedback, or live inquiry activity.

Supply Chain Commonly Integrated Components

Purge Air System

A system that provides controlled airflow to clear optical paths and protect sensors in molten metal temperature measurement applications.

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Degassing Chamber

A specialized vessel within a molten metal degassing system where dissolved gases are removed from molten metal through controlled processes.

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Gas Control System

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

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Burner Assembly

A combustion system component that generates controlled flame for heating applications in industrial preheating stations.

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Frequently Asked Questions

What is the primary function of a tundish in continuous casting?

A tundish acts as an intermediate vessel that receives molten metal from a ladle and distributes it evenly to one or more molds, ensuring consistent flow and quality during continuous casting processes.

Why are refractory linings like magnesia-based materials used in tundishes?

Magnesia-based refractory linings provide excellent thermal resistance, erosion protection, and chemical stability against molten metals, extending tundish lifespan and maintaining metal purity in high-temperature operations.

How do flow control devices like slide gates improve tundish performance?

Slide gates or stopper rods precisely regulate molten metal flow from the tundish to molds, enabling better control over casting speed, reducing turbulence, and minimizing slag inclusion for higher quality metal products.

Can I contact factories directly on CNFX?

CNFX is an open directory, not a transaction platform. Each factory profile provides direct contact information and production details to help you initiate direct inquiries with Chinese suppliers.

Data basis: CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks for Basic Metal Manufacturing.

Data Basis

CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks.

Preliminary Technical Classification
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