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Product Description
In the demanding environment of a steel rolling mill, backup rolls are the foundation of the roll stack. Their function is to provide rigid support to the smaller-diameter work rolls, absorbing the immense rolling forces and preventing deflection. The quality and integrity of the backup roll are paramount for ensuring the final product's dimensional accuracy and surface quality.
Yile Machinery is a specialized manufacturer of forged and composite cast backup rolls engineered for maximum tonnage and extended campaign life.
While the work roll makes direct contact with the steel, the backup roll performs the equally critical function of support. A high-quality backup roll:
Absorbs Enormous Rolling Forces: It withstands millions of cycles under extreme pressure.
Minimizes Work Roll Deflection: Its rigidity ensures the work roll maintains a consistent profile, which is essential for strip flatness and gauge control.
Provides a Stable Foundation: It creates the stability needed for the entire rolling process, from hot strip mills to temper mills.
We employ state-of-the-art manufacturing techniques to create backup rolls with the optimal balance of a wear-resistant surface and a tough, fracture-resistant core.
Material & Forming Method:
Forged Steel Rolls: Forged from large, high-quality steel ingots, these rolls offer exceptional toughness and resistance to bending and fatigue.
Composite Centrifugal Casting: This advanced method produces a dual-property roll. A high-alloy, wear-resistant outer shell (e.g., Adamite, high-chrome steel) is centrifugally cast around a tough, ductile core material. This provides the best of both worlds.
Specialized Heat Treatment: Rolls undergo a multi-stage heat treatment process, including differential hardening. This critical step creates an extremely hard and wear-resistant barrel surface while keeping the roll necks and core tougher and more ductile to withstand torsional and bending stresses.
Precision Grinding: Using advanced CNC roll grinders, we machine the roll barrel to precise profile and surface finish specifications, ensuring perfect contact with the work rolls and optimal performance from day one.
High Wear & Spalling Resistance: The centrifugally cast high-alloy shell provides exceptional resistance to surface wear and spalling, leading to longer campaign life.
Excellent Bending & Fracture Resistance: The forged steel core or ductile inner layer provides superior strength to withstand immense rolling forces without failure.
Superior Torsional Strength: Roll necks are engineered to handle the high torques of the mill drive system.
Reduced Downtime: Longer campaign life and high reliability mean fewer roll changes and more production uptime.
We manufacture backup rolls for a complete range of rolling mill types:
Hot Strip Mills
Heavy Plate Mills
Tandem Cold Mills
Temper and Skin-Pass Mills
Request a Quote for Mill Backup Rolls
Enhance the stability and efficiency of your rolling mill. Contact us with your technical drawings, material specifications, and application details for a comprehensive engineering proposal and quotation.
