چكيده به لاتين
Given the industry's need to utilize various aluminum alloy sheets, it is essential to determine the necessary force for rolling, as well as the torque and power required for the rolling process, and subsequently the power of the rolling machine's motors. This research addresses this topic, and the results obtained have been applied in the production of aluminum sheets using the cold rolling method. The present study examined the impact of different parameters for implementing, calculating rolling relationships, and optimizing the process using the finite element method with the help of the Deform software. For this purpose, input parameters such as initial and final thickness, sheet width, and working roll diameter were gathered, and relevant parameters including pressure, force, torque, rolling power, friction coefficient, and other necessary parameters were calculated.
To evaluate the accuracy of the simulation results, a single pass of cold rolling was conducted under real conditions on a coil of aluminum alloy 8011 produced by the two-roll casting method (TRC), and the data were incorporated into the computational model to calculate the rolling parameters. In this study, an aluminum sheet with an initial thickness of 8 mm was fed into the rolling mill and subsequently reduced to thicknesses of 4.5, 4, 3.5, and 3 mm (43%, 50%, 56%, and 62% reduction). Observations indicated a direct relationship between the reduction in thickness and the required torque and power for rolling, with the highest values recorded at 2/1×106 Nm and 1900KW for the third pass. Additionally, in the fourth pass, the process was halted due to sheet tearing when excessive thickness reduction was applied. A comparison of the results revealed that the power and torque required for the first pass in real conditions were 1476KW and 2/18×106 Nm, respectively, while in the simulation, they were calculated as 1590KW and 2/69×106Nm
