What is the process of rolling mill?

What is the process of rolling mill?

In metalworking, rolling is a metal forming process in which metal stock is passed through one or more pairs of rolls to reduce the thickness and to make the thickness uniform. Most steel mills have rolling mill divisions that convert the semi-finished casting products into finished products.

Which are the rolling problems in rolling mill?

The two common forms of rolling mill vibration that are most difficult to solve are third octave gauge chatter and fifth octave chatter. Both can cause significant strip quality issues if they occur on a mill.

What is rolling and explain types of rolling mills?

The two high rolling mills are further divided into two more categories namely high non-reversible machine in which rollers rotate in only one direction, and the workpiece can be fed in only one direction. On the other hand, the second one high reversible machine, which both rollers rotate in both directions.

Why is rolling used?

Rolling is the most widely used method of shaping metals and is particularly important in the manufacture of steel for use in construction and other industries. Cold-rolling, in which unheated bars, sheets, or strips of steel are sent through the rollers, usually requires several rollings to achieve the desired shape.

What is Alligatoring in rolling?

Alligatoring is the splitting of a rolled slab into two halves across a plane that is parallel to the rolling plane. An example is shown in Figure 1. In the present study, spheroidized steels were sub- jected to relatively severe plastic deformation by cold rolling.

What are defects in rolling?

One of the most common rolling defects is the occurrence of fibers at the edge, which are longer than those at the center. This occurs when concave rolls bend leading to elastic deformations. Thickness at the center implies that the edges are more elongated.