Study On Straightening Technology Parameters Of Conducting Bar And Straightening Effect Analysis

The refining process of copper is conducted in the electrolyzer, it will be hanged out and transported to the electrolytic copper handling units by special crane when the electrolytic refining process is completed. After the giving plate, washing, conducting bar extraction, stacking, weighing and output etc.processes, the stacks of electrolytic copper are transported to warehouses, and the conducting bars are sent to the transportation unit and finally to its special storage. In this process, the conducting bar deformed due to overloading, hitting a number of other reasons such as. The conducting bar bending deformation will increase the production costs, product quality and production efficiency will be very a serious influence, bending deformation reaches a certain level of the conducting bar will not be able to continue to use and become waste. Therefore, it is necessary to straightening the conducting bars in a timely manner.The straightening Mechanism is studied basic on a kind of22mm X22mm X3mm hollow copper conducting bar which straightened by Yunnan Copper Industry (Group) Co., Ltd. using the variable roll away from V-shaped conductive roll straightener as the research object, to study the straightening mechanism of V-shaped roller and calculate the straightening structure parameter like roller spacing、roller diameter roller number and the straightening technological parameter like play complex quantity、 reduction and so on. In this paper, the integrated use of analytical method and three-dimensional elastic-plastic finite element numerical simulation of the conducting bar straightening process in a more systematic study, based on production experiments prove the validity and the credibility of the simulation, and collected the data of the conducting bar straightening effect. Through the analysis of the straightening effect of conductive rods, Finding out problems after conducting bar straightening, and concluding the solution. Main tasks are as follows:1. To obtain the straightening ratio of curvature equation and the ideal metal and reinforced metal square tube bending moment calculation formula, the V-shaped roller straightening theory will be studied with elastoplasticity bending deflection theory and interrelated straightening theory. Thus the structural parameters and straightening technological parameter of red copper V-shaped roller straightening machine will be deduced.2. The press process of the conducting bar straightening is simulated by finite element method taking into account a variety of non-linear cases. The elastic-plastic deformation state and the distribution of the stress and strain on the section of the conducting bar and along the length of its direction are put forward.3. Three-dimensional explicit dynamic finite element simulations of the conducting bar straightening process are completed by using ANSYS/LS-NADY software to study the straightenees, size and distribution of residual stress, size of straightening rollers force basic on different roller spacing.4. Studied the impacts of roller spacing which is the key structural parameters, and intermesh the key technical parameter for each roller straightening and the size and distribution of stress-strain characteristics of the conducting bar. An ideal reference for the determination of intermesh of movable roller at the entrance of straightening maching is provided.5. Collected100root conducting bars which straightened in a factory before and after straightening of original data and leveling data, compare the deviation of the numerical simulation data and factory straightening of actual data, and found the main reasons for deviation to determine the improvement direction of the next step.