A greater volume of metal is rolled than processed by any other means. 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. Sheet metal characteristics elongation the capability of the sheet metal to stretch without necking and failure. Next, we mainly focus on the steel making process as an example. Plastic properties of metals are used during the process of metal forming. Stresses beyond yield strength of the workpiece material is required. Rolling of metal cooperative patent classification. Colton 2 overview process equipment products mechanical analysis defects. Working, application, defects, type of rolling mills. It is done by passing the strip of the metal between the rollers. A rolling mill is a machine for plastic deformation of. Lubrication in cold rolling pure research information. Process design is the ensemble of operations leading from the design geometry to the dieface. Fundamental concept of metal rolling 1 the arc of contact between the rolls and the metal is a part of a circle.
In this process, the workpiece in the form of slab or plate is. Luders bands can be eliminated by cold rolling the thickness by 0. A sendzimir mill is an example of such a cluster mill used to roll very thin sheet or foil. Mechanism of roughness profile transfer in skinpass rolling of. Metal forming processes indian institute of technology. Metal forming is the main method of making metal products and semifinished products. Definition, working, application, defects, type of rolling mills pdf. More than 90% of smelted metal is processed by different methods of metal forming. The rolling process is a metal forming process, in which stock of the material is passed. As in most metal forming processes the main reason for lubricating the cold rolling process is to control friction and surface quality.