Continuous (Tandem) Cold Rolling Process with Applying ABAQUS Software

The most important purpose of cold rolling processes, in addition to obtaining appropriate mechanical features, is to achieve very low and more precise thicknesses’, the issue that is not possible in hot rolling processes. Today, most cold rolling lines designed continuously and usually consist of 4 to 6 fourroller rolling rack. Finished surface of obtained sheets of cold rolling is Harder and more smooth than obtained sheets from hot rolling [1]. Obtained sheet and Belts from cold rolling produce in different thickness of 6 mm to less than 0.1 mm as skein and/ or sheet with mutual or tandem rolling racks. Also in cold rolling process, it can produce 25 to 90% decreasing in sheet’s thickness [2]. In sheet’s cold rolling, like final hot rolling, it is necessary to control effective parameters on rolling. These parameters include: thickness decreasing in each stage of rolling, the whole size of thickness decreasing, existing sheet’s width and thickness, thickness’s uniform in sheet’s with, smoothness of sheet’s surface, imbrication operation, back and forth tensile tensions, each rack’s torque and roller forces, speed and coordination among racks [2]. So far, numerous efforts are done about steel formation (shaping), especially cold rolling of steel sheets. In 2001, venkada and his colleagues in research named “arrangement model for continuous cold rolling” with emphasize on crucial roles of experimental data, in addition to calculated rollers consumption. Able power with regarding the percentage of sheet’s thickness decreasing and 6racks rolling simulation, they reach to this result that performed calculations confirmed with Roberts reports [3].