Rolling mill stand

The purpose of rolling is to transform large cross-section materials of long workpieces into smaller cross-sections of various shapes. During the rolling process, the material passing between the rollers undergoes plastic deformation.

Two-High Mill Stand - A two-high rolling mill stand consists of two work rolls. A two-high rolling mill stand has non-counter-rotating rolls that rotate in the same direction. Therefore, the workpiece bar cannot be fed from the other side. The two-height bracket can be a horizontal bracket or a vertical bracket.

The two-high rolling mill stand may be a two-high toggle stand. In a pull mill stand, the rolls rotate in one direction only. The workpiece is returned to the top of the mill for further rolling. The two-high stand can also be a reversing rolling stand. In this case, the workpiece rod can pass back and forth through the roller by reversing the direction of rotation.

Four-high rolling mill stand
The rolling mill stand accommodates two small diameter work rolls supported by two larger diameter backup rolls.

In fact, backup rollers are able to reduce the diameter of the work roll and thus reduce the roll separation force, which depends on the contact area between the roll and the workpiece bar.

The support roller is square, that is, the diameter is as large as the roller surface.

The alignment of the rolls in the horizontal direction depends on the type of rolling process.

The reason for this is that for smaller diameter, less rigid work rolls, the high torque in the roll bite causes them to deflect towards the entrance side of the mill.

Y-Grinder – Y-Grinder is not a popular type of mill frame. In this rolling mill stand, there is a small work roll on the top side of the workpiece, supported by two layers of support rolls that form a 90-degree angle to each other.
Form a 45 degree angle with the work piece.

Clustered Rolling Mill Stands – Roll clustering is necessary to prevent excessive roll deflection under relatively high load conditions, such as when cold rolling higher strength or thinner gauge materials. A multi-roll mill stand has two work rolls and four or more support rolls. Multi-roll mill stands can have 6, 12 or 20 rolls.

In a six-high multi-roll mill stand, each of the two work rolls has two support rolls placed at a 45-degree angle relative to the workpiece and 90-degree angles to each other. There is no intermediate roller.

The roll stand in a rolling mill consists of multiple components and systems, all of which are subject to high temperatures, high loads and extreme conditions.

has been designing and supplying a wide range of custom rolling mill stands to steel mills around the world. We offer everything from single stands to complete sets of stands, as well as replacement components for a variety of processes including flat and form rolling.