Heavy-Duty Rolling Mill Stand

Product Specifications

Technical details and manufacturing context for Heavy-Duty Rolling Mill Stand

Definition

A heavy-duty rolling mill stand is a core industrial machine used in steel production facilities to reduce and shape steel slabs, blooms, or billets into desired cross-sectional profiles. It consists of a rigid frame housing two or more work rolls that apply compressive force to hot or cold steel as it passes through. This machine is essential for producing flat products (plates, sheets) or long products (bars, beams, rails) with precise dimensional tolerances. It operates as a standalone unit that can be integrated into rolling mill lines but is purchased and maintained as individual equipment. The stand's housing is typically cast steel, and the rolls are forged alloy steel, with high-strength bolts, bronze bearings, and hardened gear components. Key parameters include a maximum rolling force of 15000–30000 MN, roll barrel length of 2000–5000 mm, roll gap adjustment of 0–50 mm, rolling speed of 0.5–20 m/s, roll diameter of 800–1600 mm, main motor power of 5000–15000 kW, rolling temperature of 900–1200 °C, housing stiffness of 5000–10000 kN/mm, and overall dimensions of 8000×4000×6000 mm, with a weight of 150–300 t. The material grade for cast steel is ZG270-500 per GB/T 11352, and the electrical supply is AC 380/660 V per IEC 60038. The roll bearing type is four-row tapered roller bearings, and the lubrication system is oil circulation. These values are reference ranges and must be verified for the specific model and application. Always confirm with the legal manufacturer or supplier for exact specifications and applicable standards.

Working Principle

Steel stock is fed between counter-rotating work rolls under high pressure, causing plastic deformation and reduction in thickness or change in cross-section through compressive force. The rolls are driven by a main motor, and the gap between them is adjustable to control the final dimensions. The housing provides rigidity to withstand the rolling forces, and the bearings support the rolls under heavy radial and axial loads. Lubrication ensures reliable operation, and the entire system is designed to handle high temperatures and speeds typical of hot rolling.

Common Materials

cast steel housing, forged alloy steel rolls, high-strength bolts, bronze bearings, hardened gear components

Technical Parameters

Parameter	Typical range	Notes & selection driver
Maximum Rolling ForceRequired	15000–30000 MN	Maximum force between rolls
Roll Barrel LengthRequired	2000–5000 mm	Length of working roll surface
Roll Gap AdjustmentRequired	0–50 mm	Minimum to maximum roll opening
Rolling Speed	0.5–20 m/s	Maximum exit speed of material
Roll Diameter	800–1600 mm	Influences roll strength and deflection.
Main Motor Power	5000–15000 kW	Required to achieve the specified rolling torque.
Rolling Temperature	900–1200 °C	Typical for hot rolling of steel.
Material Grade	ZG270-500	Cast steel for housing and rolls.GB/T 11352
Housing Stiffness	5000–10000 kN/mm	Higher stiffness improves dimensional accuracy.
Roll Bearing Type	Four-row tapered roller bearing	Handles high radial and axial loads.
Lubrication System	Circulating oil lubrication	Ensures reliable bearing operation.
Overall Dimensions (L×W×H)	8000×4000×6000 mm	Required for plant layout and installation.
Weight	150–300 t	Affects foundation design and transport.
Electrical Supply	AC 380/660 V	Standard industrial voltage in China.IEC 60038

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

Mill Housing
Structural frame supporting all components

Material: Cast Steel
Work Rolls Part
Direct contact with steel for deformation

Material: Forged Alloy Steel
Roll Bearings Part
Support rolls and reduce friction

Material: Bronze/Composite
Screwdown Mechanism
Precise adjustment of roll gap

Material: Alloy Steel
Roll Chocks
Housing for roll bearings

Material: Cast Steel

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Heavy-Duty Rolling Mill Stand.

Manufacturers of Heavy-Duty Rolling Mill Stand

Manufacturer profiles associated with Heavy-Duty Rolling Mill Stand.

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Frequently Asked Questions

What is the maximum rolling force of this stand?

The maximum rolling force is listed as 15000–30000 MN, but this is a reference range. Confirm the exact value for your specific model and application with the manufacturer.

What materials are used in the construction?

The housing is cast steel (grade ZG270-500 per GB/T 11352), rolls are forged alloy steel, and components include high-strength bolts, bronze bearings, and hardened gears. Verify material grades with the supplier.

What is the required electrical supply?

The electrical supply is AC 380/660 V per IEC 60038. Ensure your facility matches this voltage and frequency, and confirm with the manufacturer for your specific configuration.

How is the roll gap adjusted?

The roll gap can be adjusted from 0 to 50 mm. The adjustment mechanism is part of the stand, but the exact method (e.g., hydraulic or mechanical) should be confirmed with the manufacturer.

Data Basis

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

Preliminary Technical Classification

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pressure:	Up to 5000 kN roll separating force
other spec:	Roll speed: 0.1-10 m/s, Material thickness reduction: 20-80% per pass, Maximum strip width: 2000 mm
temperature:	Ambient to 1200°C (for hot rolling applications)

Product Specifications

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