Study of Tube Ends Forming Using Ballizing Technique | ||
| SVU-International Journal of Engineering Sciences and Applications | ||
| Volume 5, Issue 2, December 2024, Pages 265-274 PDF (938.6 K) | ||
| Document Type: Original research articles | ||
| DOI: 10.21608/svusrc.2024.288391.1218 | ||
| Authors | ||
| Muhammad M. Abo Hussain* 1; M. N. Elsheikh2; S. Z. El-Abden3; Yehia M. Ismaael3; Essam K. Saied4 | ||
| 1Department of Production Engineering and Mechanical Design, Faculty of Engineering, Minia University, Egypt. | ||
| 2Department of Mechanical Engineering, Faculty of Technology and Education, Beni-Suef University, Beni-Suef 62511, Egypt. | ||
| 3Department of Production Engineering and Mechanical Design, Faculty of Engineering, Minia 61111, Egypt | ||
| 4Department of Mechanical Engineering, Faculty of Engineering, Beni-Suef University, Beni-Suef 62511, Egypt | ||
| Abstract | ||
| The fabrication of tube ends is an important branch in the fluid and gas transportation industries as it is needed in pipes connection process. Traditional methods like pressing, stamping, and welding with flanges have been utilized, along with non-traditional techniques such as spinning and rotary forging. Steel balls were exploited in this study as a forming tool for aluminum pipe ends. To select the proper machine and found the necessary forces for forming, a mathematical approach was created to estimate the forming load. The forming tool was made up of two steel balls with a diameter of 45 mm that could move freely around their three axes. The combination of the steel balls above the thrust bearing in its holder is mounted on a jaws of lathe chuck which acting as a holder for the whole tool. The forming process began by adjusting the contact of the forming ball with the outer surface of the pipe, moving the carriage backward, and adjusting the forming depth. As the forming ball contacted the pipe's outer surface and advanced until the desired nosing ratio was achieved, the forming occurred. The effects of these variables on the forming forces, hardness, and thickness change of the formed part were evaluated. The experimental results showed enhancement in reduction ratios to reach 63% compared to a ratio of about 40%. The thickness change values after forming were within acceptable limits of 12%. The results of the mathematical model aligned with the experimental findings. | ||
| Keywords | ||
| Metal spinning; Tube end, Nosing; Theoretical approach; Nosing load and nosing ratio | ||
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