Three Roller Roughing Mill

Three Roller Roughing Mill:

The three-roll roughing mill is a crucial component in hot rolling production lines, primarily designed for the initial processing of hot-rolled steel billets to achieve the desired thickness and shape. Here is a detailed overview of the RunHao machinery three-roll roughing mill:

1. Equipment Overview:

The three-roll roughing mill is a roller-type mill on a hot rolling production line, typically composed of upper, middle, and lower rolls. Through relative motion, these three rolls induce plastic deformation in hot-rolled steel billets, achieving the primary objective of initial compression.

2. Operating Principle:

During operation, hot-rolled steel billets pass through the gap between the upper and middle rolls. The squeezing and deformation in the roll gap lead to a change in the cross-sectional area of the steel billet. The lower roll provides support and counterforce, ensuring a stable rolling process. Throughout the process, the hot-rolled steel billet gradually undergoes deformation, reducing its cross-sectional dimensions to accomplish the preliminary rolling.

3. Structural Features:

Roll Structure: The rolls of the three-roll roughing mill are typically made of cast iron or forged steel to ensure sufficient strength and wear resistance.

Roll Gap Adjustment Mechanism: To accommodate steel billets of different thicknesses, a roll gap adjustment mechanism is usually incorporated, enabling precise adjustments of the roll gap.

Roll Cooling System: To counteract the heat generated during prolonged rolling operations, a cooling system is often employed to ensure equipment stability and longevity.

4. Application Areas:

The three-roll roughing mill finds wide applications in various hot rolling production lines, especially in the initial rolling processes of steel mills. It can handle different types of steel billets, including square and round billets, providing ideal raw materials for subsequent rolling processes.

5. Advantages and Characteristics:

Efficiency: Achieves efficient initial rolling of steel billets through the combined action of the three rolls.

Versatility: Adaptable to hot-rolled steel billets of different specifications and materials.

Ease of Operation: Equipped with a roll gap adjustment mechanism and advanced automatic control systems, ensuring convenient operation.

6. Considerations:

Safety: Operators must adhere to strict safety protocols to ensure the safe operation of the equipment.

Equipment Maintenance: Regular maintenance, especially checking and lubricating the rolls, is essential to guarantee equipment stability and lifespan.

In conclusion, the three-roll roughing mill plays an indispensable role in hot rolling production, providing crucial initial processing for the production of high-quality rolled products.