What are the rolling methods of rolling mills?

A rolling mill is a metalworking machine that presses raw metal through one or more pairs of rollers to reduce its thickness and make it uniform. This process is fundamental to the production of sheet metal, structural steel, and other products. The following are the main types of rolling methods commonly used in rolling mills:

Flat Rolling:

Process: Metal is passed between two rollers to form a sheet or strip.
Products: Plate, sheet, strip.

Shape Rolling:

Process: Metal is passed through specially designed rollers to form shapes such as beams, angles or slots.
Products: Structural shapes used in construction.

Ring Rolling:

Process: A heated round piece is rolled between two rollers to expand its diameter and reduce its cross-sectional area.
Applications: Production of seamless rings for bearings, flanges and gear blanks.

Thread Rolling:

Process: Threads are formed by rolling the thread form onto the workpiece.
Advantages: Produces stronger threads than cutting or grinding.
Applications: Fasteners, bolts and screws.

Roll Forming:

Process: A continuous bending operation in which a long strip of metal (usually coiled steel) is passed through successive sets of rollers, each performing an incremental portion of the bend until the desired cross-sectional profile is achieved.

Applications: Long parts of constant cross-section, such as rails, tracks and complex profiles.
Each rolling method is selected based on specific material properties, desired product characteristics and required production efficiency.

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