1Associate professor, Mechanical Engineering, College of Engineering, Wolaita sodo Universitt, Ethiopia
2Professor, Head of Department, D.G. Vaishnava College, Chennai, India
3Assistant Professor, Mechanical Engineering, College of Engineering, Wolaita sodo University, Ethiopia
4Assistant Professor SG, Aeronautical Engineering, Hindustan Institite of Technology, Chennai, India
Tube bending is one of the branches of metal forming process used in different application areas like manufacturing sectors, in automobile and petroleum industry. During tube bending defects are obvious some of them are wrinkling, oval and thinning. The impacts of those problems were weakening the strength; reduce aesthetic value of the tube after bending.
In this research several works related to the optimization process has been done to improve the bending quality of the tube. Before the tube bend operation was done selection of the design of experiment were performed. There were four control factors & three responses. The mechanical properties of the tube were tested using tensile test machine & using the spectrometer machine from this result the material were srt37.2. Using rotary draw tube bending machine experiments were carried out based on the selected design of the experiment L9 octagonal array for 25mmx 90o st 37-2 steel tubes. Data were gathered using digital vernier calipers & micrometers from the experiments & analyzed mathematically using Minitab 16 software. Using response surface optimizer of Minitab 16 software the multi response of tube bending parameter was optimized. The optimal control factors, significant factors &optimal results were determined. Experiments were done using the optimal control factors for validation. The study shown that setting of optimum parameters using the developed model is a good method in minimizing the responses or improving the quality of the tube bend.
Optimization, Improve bending quality, defect wrinkling, mandrill diameter
