Elastic-plastic finite element analysis of semi-hot forging dies

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2009

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Halisçelik, Murat

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Semi-hot or warm forging is an economical alternative to the conventional forging processes by combining advantages of hot and cold forging processes. In this study, a new forging process sequence and design of the preform die for a part which has been produced by hot forging are proposed to be produced by semi-hot forging. Thermo-mechanical finite element analyses are performed over the stages of forging process. The billet and the dies are modeled as elastic-plastic bodies. Effects of preform die geometry on the die stresses and the forging load are investigated using finite element method. Comparison of the results obtained by using two different commercial finite element analysis programs is done for semi-hot and hot forging temperature ranges. The forging temperatures are determined for the particular part and the experiments are conducted by using the 1000 ton forging press. The parts are produced without any defects and material wastage in the form of flash is reduced. The numerical results are also compared with the experimental results and a good agreement is achieved.

Subject Keywords

Mechanical engineering.

URI

http://etd.lib.metu.edu.tr/upload/2/12610542/index.pdf
https://hdl.handle.net/11511/18731

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Graduate School of Natural and Applied Sciences, Thesis

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Citation Formats

M. Halisçelik, “Elastic-plastic finite element analysis of semi-hot forging dies,” M.S. - Master of Science, Middle East Technical University, 2009.