The effect of upsetting ratio on mechanical properties for hydromechanically bulged axisymmetric components made from copper tubes
The paper presents experimental results of investigations of hydromechanical bulge forming of copper axisymmetric components whose relative wall thickness was s<sub>0</sub>/D = 0,045. The deformation ratio of material in the paper was defined as relative upsetting ratio Dl/l<sub>0&...
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| Format: | Article |
| Language: | English |
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Croatian Metallurgical Society
2017-01-01
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| Series: | Metalurgija |
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| Online Access: | http://hrcak.srce.hr/file/266739 |
| Summary: | The paper presents experimental results of investigations of hydromechanical bulge forming of copper axisymmetric components whose relative wall thickness was s<sub>0</sub>/D = 0,045. The deformation ratio of material in the paper was defined as relative upsetting ratio Dl/l<sub>0</sub> (where Dl – the punch displacement, l<sub>0</sub> – initial length of tube). The investigations produced a liquid pressure and a force profile in hydromechanical bulge forming of copper axisymmetric components with different relative ratios Dl/l<sub>0</sub> = 0,054 ÷ 0,109. The research aimed to determine the impact of upsetting ratio on mechanical properties for hydromechanically bulged axisymmetric components. The tensile strength Rm increased and the percentage reduction of area Z decreased as the upsetting ratio Dl/l<sub>0</sub> increased. |
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| ISSN: | 0543-5846 1334-2576 |