Electroslag Remelting Furnace

Product Specifications

Technical details and manufacturing context for Electroslag Remelting Furnace

Definition

An industrial furnace used in basic metal manufacturing for secondary refining of alloys through the electroslag remelting (ESR) process. It produces high-purity, homogeneous metal ingots with superior mechanical properties by melting consumable electrodes through a conductive slag layer. This equipment is essential for aerospace, power generation, and tool steel applications requiring exceptional material quality. The furnace operates by passing an electric current through a conductive slag layer, which generates heat and melts the tip of a consumable electrode. The molten metal droplets pass through the slag, undergoing refining reactions that remove impurities and control solidification. The refined metal collects in a water-cooled copper crucible, solidifying into an ingot with a controlled structure. Key components include the electrode holder assembly, copper crucible, refractory lining, water cooling system, and slag mixture. Typical parameters include ingot diameters from 200 to 1200 mm, melting rates of 0.5 to 5 kg/h, power consumption of 1200 to 1800 kWh per ton, slag temperatures of 1500 to 1800 °C, and rated capacities of 5 to 50 tons per heat. The electrode stroke ranges from 1000 to 3000 mm, with drive speeds of 0.1 to 1.5 m/min. Electrical supply is typically 380–660 V at 50/60 Hz, with protection class IP54–IP65. Cooling water flow rates are 20–80 m³/h at pressures of 0.3–0.6 MPa. The machine weight ranges from 20 to 100 tons. These values are reference ranges; verify model-specific specifications with the manufacturer.

Working Principle

A consumable electrode is suspended above a water-cooled copper crucible containing a pre-melted conductive slag. An electric current passes through the electrode and slag, generating resistive heat that melts the electrode tip. Molten metal droplets fall through the slag, where refining reactions occur, removing impurities and controlling composition. The droplets collect in the crucible and solidify into an ingot. The slag layer also acts as a thermal barrier, promoting directional solidification and a homogeneous structure.

Common Materials

copper crucible, refractory lining, electrode holder assembly, water cooling system, slag mixture

Technical Parameters

Parameter	Typical range	Notes & selection driver
Ingot DiameterRequired	200–1200 mm	Maximum ingot diameter
Melting RateRequired	0.5–5 kg/h	Typical melting speed
Power ConsumptionRequired	1200–1800 kWh/ton	Energy per ton produced
Slag TemperatureRequired	1500–1800 °C	Operating slag temperature
Rated Capacity	5–50 t	Maximum ingot weight per heat
Electrode Stroke	1000–3000 mm	Determines electrode feed range
Electrode Drive Speed	0.1–1.5 m/min	Controls melting stability
Voltage	380–660 V	Input supply voltageIEC 60038
Frequency	50/60 Hz	Mains frequencyIEC 60038
Cooling Water Flow Rate	20–80 m³/h	Ensures proper cooling of mold and furnace
Cooling Water Pressure	0.3–0.6 MPa	Maintains adequate flow
Operating Temperature	0–45 °C	Ambient temperature range
Protection Class	IP54–IP65	Dust and water protection for electrical enclosuresIEC 60529
Machine Weight	20–100 t	Affects foundation and installation

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

Power Supply System
Provides AC/DC power for melting

Material: Copper/Steel
Water-Cooled Crucible
Contains molten metal and slag

Material: Copper with refractory
Electrode Feeding Mechanism
Controls electrode descent rate

Material: Steel alloy
Slag System
Holds and maintains conductive slag

Material: Refractory materials
Control System
Monitors and regulates process parameters

Material: Electronic components

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Electroslag Remelting Furnace.

Manufacturers of Electroslag Remelting Furnace

1 company lists this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

CHNZBTECH

Xian, Shaanxi, CN

Also makes: Continuous Casting Machine, Electric Arc Furnace, Water-Cooled Panels and 8 more

Listed on the company's own website · profile compiled by CNFX from public sources

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Frequently Asked Questions

What is the typical ingot diameter range for an ESR furnace?

According to directory data, the maximum ingot diameter ranges from 200 to 1200 mm. However, the actual range depends on the specific furnace model and configuration. Always confirm with the manufacturer.

What is the power consumption per ton of metal produced?

The directory lists power consumption between 1200 and 1800 kWh per ton. This is a reference range; actual consumption varies with operating conditions and material. Verify with the supplier.

What standards apply to the electrical supply?

The voltage and frequency are listed as 380–660 V and 50/60 Hz, referencing IEC 60038. The protection class for electrical enclosures is IP54–IP65 per IEC 60529. These are procurement references, not certifications.

What are the cooling water requirements?

Cooling water flow rate is typically 20–80 m³/h at a pressure of 0.3–0.6 MPa. These values ensure proper cooling of the mold and furnace. Confirm exact requirements for your installation.

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 (slag pool pressure)
other spec:	Electrode feed rate: 0.5-10 mm/min, Cooling water flow: 50-500 m³/h, Power input: 1-10 MW
temperature:	1500-1800°C (operating melt pool temperature)

Product Specifications

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