Tundish with Pre-Heating for Non-Ferrous Continuous Casting

Product Specifications

Technical details and manufacturing context for Tundish with Pre-Heating

Definition

The Tundish with Pre-Heating is a component used in continuous casting systems for non-ferrous alloys. It functions as a temperature-controlled reservoir that receives molten metal from a ladle and distributes it to a mold. Its integrated pre-heating system, consisting of electric or gas-fired heating elements, actively maintains the metal within a narrow target temperature range, preventing premature solidification and thermal shock. This ensures consistent metal fluidity, uniform microstructure, and high-quality cast products by maintaining precise temperature profiles throughout the casting process.

The tundish is constructed with a refractory lining (e.g., alumina, magnesia) and a steel shell, with heating elements made of materials such as silicon carbide or molybdenum disilicide. Key parameters include a capacity of 5–20 tonnes, an operating temperature range of 700–1000 °C, heating power of 50–200 kW, and temperature uniformity of ±10 °C. The heating element material is MoSi2 (per ASTM B387), and the lining material is Al2O3–SiO2 (per GB/T 2988). The power supply is three-phase, 380–480 V AC (per IEC 60038). Other specifications include a heating rate of 5–15 °C/min, control accuracy of ±5 °C, insulation thickness of 100–200 mm, weight of 10–30 tonnes, and a footprint of 3–8 m².

These values are directory reference ranges and must be confirmed for the specific model and application. The tundish is designed for use in basic metal manufacturing, specifically for non-ferrous alloy casting. It is not a standalone product but a part of a larger casting system. Verification of model-specific values and standards should be conducted with the legal manufacturer or supplier.

Working Principle

The tundish receives molten non-ferrous alloy from the ladle. Integrated electric or gas-fired heating elements, controlled by a temperature feedback system, actively maintain the metal within a narrow target temperature range. This prevents heat loss during transfer, reduces temperature gradients, and ensures the metal remains at the optimal viscosity for smooth, controlled flow into the mold, which is crucial for defect-free casting.

Common Materials

Refractory Lining (e.g., alumina, magnesia), Steel Shell, Heating Elements (e.g., silicon carbide, molybdenum disilicide)

Technical Parameters

Parameter	Typical range	Notes & selection driver
Capacity	5–20 t	Determines batch size for continuous casting
Operating Temperature	700–1000 °C	Maintains metal in liquid state
Heating Power	50–200 kW	Sufficient to compensate heat losses
Temperature Uniformity	±10 °C	Ensures consistent casting quality
Heating Element Material	MoSi2	High-temperature oxidation resistanceASTM B387
Lining Material	Al2O3–SiO2	Thermal shock resistanceGB/T 2988
Power Supply	380–480 V AC	Three-phase, 50/60 HzIEC 60038
Heating Rate	5–15 °C/min	Avoid thermal stress
Control Accuracy	±5 °C	PID control with thermocouple feedback
Insulation Thickness	100–200 mm	Reduces heat loss
Weight	10–30 t	Affects foundation and crane requirements
Footprint	3–8 m²	Space for installation and maintenance

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

Refractory Lining Part
Provides thermal insulation and protects the steel shell from molten metal corrosion and erosion.

Material: Alumina, Magnesia, or other ceramic refractories
Heating Element Bank
Generates heat to maintain the molten metal at the target temperature; typically embedded in or surrounding the lining.

Material: Silicon Carbide, Molybdenum Disilicide, or resistance alloys
Thermocouple Assembly
Monitors the real-time temperature of the molten metal for feedback control of the heating system.

Material: Sheathed thermocouple (e.g., Type K, Type S)
Steel Shell/Casing Part
Provides structural support and containment for the refractory lining and internal components.

Material: Carbon Steel or Low-Alloy Steel
Temperature Control System
Reads the thermocouples and drives the heaters to hold the narrow target band.

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Frequently Asked Questions

What is the purpose of the pre-heating system in this tundish?

The pre-heating system maintains the molten metal at a precise temperature to prevent premature solidification and thermal shock, ensuring consistent fluidity and casting quality.

What materials are used in the construction?

The tundish has a refractory lining (e.g., alumina, magnesia), a steel shell, and heating elements made of silicon carbide or molybdenum disilicide.

What are the typical operating parameters?

Typical parameters include a capacity of 5–20 t, operating temperature of 700–1000 °C, heating power of 50–200 kW, and temperature uniformity of ±10 °C. These are reference ranges and must be confirmed for the specific model.

How is temperature control achieved?

Temperature control is achieved via a PID controller with thermocouple feedback, providing control accuracy of ±5 °C. The heating rate is 5–15 °C/min to avoid thermal stress.

Data Basis

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

Preliminary Technical Classification

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pressure:	Atmospheric to 0.5 bar gauge (non-pressurized operation)
flow rate:	5-50 tons/hour (continuous casting throughput)
temperature:	Ambient to 1200°C (pre-heating range: 200-800°C)
slurry concentration:	Not applicable (handles molten metal only)

Tundish with Pre-Heating

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