Roll-forging is a metal forming process and mainly used for preform forging of long parts prior to press or hammer forging in the industry. Variable cross sections through the length of billet can be obtained by roll-forging to acquire an adequate distribution of material to the next forging stages. In the design of process and dies used in roll-forging, there are some empirical techniques in literature. However these techniques only provide approximate reduction ratio and elongation during the process and the geometry of the workpiece at the end of each stage cannot be determined exactly by using these techniques.
In this study, multistage roll-forging process has been analyzed by using a finite element analysis software to examine material flow, temperature, stress and strain distribution at each roll-forging step. The geometries at the intermediate stages have been determined. Computer results have been compared to experimental results and good agreement has been observed.
| Identifer | oai:union.ndltd.org:METU/oai:etd.lib.metu.edu.tr:http://etd.lib.metu.edu.tr/upload/12606537/index.pdf |
| Date | 01 September 2005 |
| Creators | Karacaovali, Hakan |
| Contributors | Gokler, Mustafa Ilhan |
| Publisher | METU |
| Source Sets | Middle East Technical Univ. |
| Language | English |
| Detected Language | English |
| Type | M.S. Thesis |
| Format | text/pdf |
| Rights | To liberate the content for public access |
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