Metallurgy, Vol. 56 No. 3-4, 2017.
Original scientific paper
The effect of upsetting ratio on mechanical properties for hydromechanically bulged axisymmetric components made from copper tubes
T. Miłek
; Kielce University of Technology, Poland
Abstract
The paper presents experimental results of investigations of hydromechanical bulge forming of copper axisymmetric components whose relative wall thickness was s0/D = 0,045. The deformation ratio of material in the paper was defined as relative upsetting ratio Dl/l0 (where Dl – the punch displacement, l0 – 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/l0 = 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/l0 increased.
Keywords
hydromechanical bulge forming; upsetting ratio; axisymmetric components; copper tubes; mechanical properties
Hrčak ID:
180983
URI
Publication date:
1.7.2017.
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