Furnace Shell: Capacity 30-400 tons, Diameter 3-10 meters

Component Specifications

Definition

The furnace shell is a cylindrical or spherical steel structure that forms the outer body of an electric arc furnace. It serves as the primary containment vessel for the steelmaking process, housing the molten metal bath, refractory lining, and supporting the roof and electrode systems. Designed to withstand extreme thermal cycling, mechanical stresses, and chemical exposure during steel production cycles.

Working Principle

Provides structural integrity and containment for the steelmaking process. The shell supports refractory materials that insulate against high temperatures (up to 1800°C), contains molten metal, and withstands thermal expansion during heating/cooling cycles. It facilitates tilting for tapping operations and supports auxiliary systems.

Materials

High-temperature steel alloys (typically ASTM A387 Grade 11/22, A516 Grade 70, or equivalent), with thickness ranging from 30-100mm depending on furnace capacity. May include cooling panels or water-cooled sections for thermal management.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Height	2-6 meters
Capacity	30-400 tons
Diameter	3-10 meters
Tilting Angle	Up to 45 degrees
Shell Thickness	30-100mm
Operating Temperature	Up to 1800°C

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

Standards

ISO 13579, DIN 17100, ASTM A387

Parent Products

This component is used in the following industrial products

Electric Arc Furnace

An electric arc furnace melts scrap steel or direct reduced iron using high-power electric arcs to produce liquid steel.

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Engineering Analysis

Risks & Mitigation

Thermal fatigue cracking
Refractory failure leading to shell overheating
Structural deformation from thermal expansion
Corrosion from slag/metal contact

FMEA Triads

Trigger: Thermal cycling stress
Failure: Crack formation in shell structure
Mitigation: Regular thermal stress analysis, proper cooling system maintenance, controlled heating/cooling rates

Trigger: Refractory lining deterioration
Failure: Localized shell overheating and deformation
Mitigation: Regular refractory inspection and replacement, temperature monitoring systems

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

±5mm dimensional tolerance, ±2° angular alignment

Test Method

Ultrasonic testing for thickness, radiographic testing for welds, thermal imaging for hot spots

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

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Manufacturers of Furnace Shell

Manufacturer profiles associated with Furnace Shell.

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Work Rolls

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Frequently Asked Questions

What is the primary function of a furnace shell in electric arc furnaces?

The furnace shell provides structural containment for molten metal, supports refractory lining, withstands extreme thermal cycling, and enables tilting operations for tapping molten steel.

What materials are used for furnace shell construction?

High-temperature steel alloys such as ASTM A387 Grade 11/22 or A516 Grade 70, typically 30-100mm thick, sometimes with integrated water-cooling systems.

How does furnace shell design affect steel production efficiency?

Proper shell design minimizes heat loss, reduces refractory wear, enables faster cycling times, and improves safety during tapping operations.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Preliminary Technical Classification

This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

Furnace Shell