Industry-Verified Manufacturing Data (2026)

Electroslag Remelting Furnace

Based on aggregated insights from multiple verified factory profiles within the CNFX directory, the standard Electroslag Remelting Furnace 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 Electroslag Remelting Furnace is characterized by the integration of Power Supply System and Water-Cooled Crucible. In industrial production environments, manufacturers listed on CNFX commonly emphasize copper crucible construction to support stable, high-cycle operation across diverse manufacturing scenarios.

Secondary refining furnace for high-quality metal ingots

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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 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.
Working Principle
Consumable electrode melts through electrically heated conductive slag, with droplets refined through slag-metal reactions before solidifying into ingot
Common Materials
copper crucible, refractory lining, electrode holder assembly, water cooling system, slag mixture
Technical Parameters
  • Transformer rating (kVA) Standard Spec
  • Maximum ingot weight (ton) Standard Spec
  • Maximum electrode size (mm) Standard Spec
Components / BOM
Engineering Reasoning
0.5-2.0 MPa electrode pressure, 40-80 VDC, 10-50 kA current
Electrode pressure exceeds 2.5 MPa causing slag pool instability, or current density surpasses 15 A/cm² leading to electrode erosion
Design Rationale: Electromagnetic pinch effect instability at current densities >15 A/cm² disrupts slag-metal interface, causing non-uniform solidification and ingot defects
Risk Mitigation (FMEA)
Trigger Water cooling system flow rate drops below 15 L/min per electrode
Mode: Electrode overheating >1200°C causing premature melting and slag composition contamination
Strategy: Dual redundant cooling circuits with flow sensors and automatic power cutoff at 12 L/min
Trigger Slag composition CaF₂ content falls below 40% by weight
Mode: Increased slag electrical resistivity >0.25 Ω·cm causing arcing and ingot surface defects
Strategy: Automated slag composition monitoring with XRF analyzer and CaF₂ injection system

Industry Taxonomies & Aliases

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

ESR furnace electroslag furnace electroslag remelting furnace for steel production secondary refining furnace with water-cooled crucible high-quality metal ingot manufacturing equipment electroslag remelting furnace power consumption specs copper crucible ESR furnace for basic

Industrial Ecosystem & Supply Chain DNA

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
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)
Media Compatibility
✓ High-alloy steels (tool steels, stainless) ✓ Nickel-based superalloys ✓ Titanium alloys
Unsuitable: Reactive metals in air atmosphere (requires inert gas protection)
Sizing Data Required
  • Required ingot diameter (mm)
  • Annual production capacity (tons/year)
  • Maximum alloy segregation tolerance (chemical homogeneity specification)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Electrode degradation and breakage
Cause: Thermal fatigue from repeated heating/cooling cycles, mechanical stress from electrode positioning systems, and oxidation at high temperatures leading to embrittlement.
Refractory lining failure
Cause: Thermal shock during rapid temperature changes, chemical erosion from molten slag and metal interactions, and mechanical wear from slag movement and cleaning operations.
Maintenance Indicators
  • Unusual arcing sounds or visible sparking outside normal electrode-slag interface
  • Visible cracks or bulging in furnace shell, or abnormal temperature readings on infrared scans
Engineering Tips
  • Implement predictive maintenance using vibration analysis on electrode positioning systems and thermal imaging to detect refractory hot spots before failure
  • Optimize slag chemistry and temperature control to minimize corrosive wear, and establish strict thermal cycling protocols to reduce thermal shock on refractory materials

Compliance & Manufacturing Standards

Reference Standards
ISO 9001:2015 - Quality management systems ASTM A604/A604M - Standard Practice for Macroetch Testing of Consumable Electrode Remelted Steel Bars and Billets CE Marking - Machinery Directive 2006/42/EC
Manufacturing Precision
  • Electrode alignment: +/- 0.5mm
  • Mold concentricity: 0.2mm total indicator runout
Quality Inspection
  • Ultrasonic Testing (UT) for internal defects
  • Chemical Composition Analysis via Optical Emission Spectrometry

Factories Producing Electroslag Remelting Furnace

Verified manufacturers with capability to produce this product in China

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✓ 92% Supplier Capability Match Found

S Sourcing Manager from United States Jan 08, 2026
★★★★★
"The technical documentation for this Electroslag Remelting Furnace is very thorough, especially regarding Ingot Diameter (mm)."
Technical Specifications Verified
P Procurement Specialist from United Arab Emirates Jan 05, 2026
★★★★☆
"Reliable performance in harsh Basic Metal Manufacturing environments. No issues with the Electroslag Remelting Furnace so far. (Delivery took slightly longer than expected, but technical support was excellent.)"
Technical Specifications Verified
T Technical Director from Australia Jan 02, 2026
★★★★★
"Testing the Electroslag Remelting Furnace now; the Ingot Diameter (mm) results are within 1% of the laboratory datasheet."
Technical Specifications Verified
Verification Protocol

“Feedback is collected from verified sourcing managers during RFQ (Request for Quote) and factory evaluation processes on CNFX. These reports represent historical performance data and technical audit summaries from our B2B manufacturing network.”

16 sourcing managers are analyzing this specification now. Last inquiry for Electroslag Remelting Furnace from Germany (1h ago).

Supply Chain Commonly Integrated Components

Signal Processor

Electronic device that conditions, amplifies, filters, and converts raw sensor signals into standardized outputs for temperature measurement systems

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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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Frequently Asked Questions

What are the key advantages of using an Electroslag Remelting Furnace for metal production?

Electroslag Remelting Furnaces provide superior ingot quality with reduced inclusions, improved homogeneity, and enhanced mechanical properties through controlled solidification and slag refining processes.

How does the water cooling system affect furnace performance?

The water cooling system maintains optimal crucible temperature, prevents overheating, ensures consistent melting rates, and extends equipment lifespan by protecting critical components from thermal stress.

What factors determine the melting rate and power consumption of an ESR furnace?

Melting rate and power consumption depend on ingot diameter, electrode composition, slag properties, power supply capacity, and cooling efficiency, typically ranging from 500-5000 kg/h and 1200-1800 kWh/ton respectively.

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 Specifications verified by CNFX Industrial Index (v2.6.03) for Basic Metal Manufacturing sector.

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