Steel Shell/Casing: Thickness 12-25 mm

Component Specifications

Definition

A structural steel casing designed to encase and protect the refractory lining of a tundish during pre-heating operations in continuous casting processes. It maintains thermal integrity, provides mechanical support, and ensures safe containment of molten steel at elevated temperatures up to 1600°C.

Working Principle

The steel shell acts as an external protective barrier that contains the refractory lining and withstands thermal expansion stresses during pre-heating. It facilitates uniform heat distribution, prevents heat loss, and maintains structural stability under cyclic thermal loading.

Materials

Low-alloy heat-resistant steel (e.g., ASTM A387 Grade 11/22, EN 1.7335), with chromium-molybdenum content for enhanced oxidation resistance and high-temperature strength.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Thickness	12-25 mm
Surface Finish	Shot-blasted, anti-scale coating
Design Pressure	Atmospheric
Operating Temperature	Up to 1600°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

DIN 17155, ASTM A387

Parent Products

This component is used in the following industrial products

Tundish with Pre-Heating

A tundish with integrated heating elements for temperature-controlled continuous casting of non-ferrous alloys.

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Stack

The vertical exhaust structure of a blast furnace that channels hot waste gases and particulates away from the furnace interior and working environment.

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Engineering Analysis

Risks & Mitigation

Thermal fatigue cracking
Oxidation and scaling at high temperatures
Warpage due to uneven heating

FMEA Triads

Trigger: Cyclic thermal stress
Failure: Crack propagation in weld zones
Mitigation: Implement stress-relief annealing and ultrasonic testing

Trigger: Inadequate material grade
Failure: Premature oxidation and thinning
Mitigation: Use ASTM A387 Grade 22 with protective coatings

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

±2 mm on dimensions, flatness within 3 mm/m

Test Method

Non-destructive testing (UT, PT), dimensional verification per ISO 9013

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 Steel Shell/Casing

Manufacturer profiles associated with Steel Shell/Casing.

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Related Components

Valve Body

Valve body is the main structural housing of a molten metal flow control valve, designed to withstand extreme temperatures and corrosive environments while directing metal flow.

Refractory Liner

Refractory liner for molten metal flow control valves, providing thermal insulation and erosion resistance in extreme temperature applications.

Work Rolls

Work rolls are precision cylindrical components in heavy-duty rolling mills that directly contact and deform metal during rolling operations.

Venting Channels

Venting channels are precision-engineered passages in metal casting mold cores designed to allow gases to escape during the molten metal pouring process, preventing defects and ensuring high-quality castings.

Frequently Asked Questions

What is the primary function of the steel shell in tundish pre-heating?

To provide structural support, thermal containment, and protection for the refractory lining during pre-heating, ensuring safe and efficient operation.

How does material selection impact performance?

Chromium-molybdenum alloys offer superior oxidation resistance and creep strength at high temperatures, extending service life and reducing maintenance.

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.

Steel Shell/Casing