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Effect of Workpiece Slenderness on the Numerical Flow Lines Distribution in the Cross-Section of a Circular-Symmetric Part Hot Die Forged with a Hammer
 
 
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Faculty of Mechatronics and Mechanical Engineering Kielce, University of Technology, Al. Tysiąclecia Państwa Polskiego 7, 25-314 Kielce, Poland
 
 
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Tomasz Miłek   

Faculty of Mechatronics and Mechanical Engineering Kielce, University of Technology, Al. Tysiąclecia Państwa Polskiego 7, 25-314 Kielce, Poland
 
 
Adv. Sci. Technol. Res. J. 2022; 16(6):108-117
 
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ABSTRACT
The paper presents the results of computer simulations of the steam-air hammer driven die forging process of circular-symmetrical forgings at different slenderness values of the billet (range from 1.5 to 2.8). The slenderness of the workpiece is defined as the ratio of the length of the billet to its diameter. The aim of investigations was to analyse the influence of various values of the billet upsetting ratios on the distribution of the flow lines in the longitudinal sections of the forgings. In addition, the material flow velocities were compared, which allowed for the evaluation of the flow kinematics in individual zones of the forgings. The computer simulation was performed using specialized commercial QFORM-2D software based on the finite element method (FEM). A comparative analysis of obtained results allowed for the development of conclusions that may be helpful in the implementation of this process in industrial conditions for similar shapes of steel forgings.
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