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[74160] Artykuł: EFFECT OF THE UPSETTING RATIO ON WALL THICKNESS DISTRIBUTION IN LONGITUDINAL SECTION OF HYDROMECHANICALLY BULGED AXISYM METRIC COMPONENTS MADE FROM COPPER TUBESCzasopismo: 26th International Conference on Metallurgy and Materials Strony: 478-483ISBN: 978-80-87294-79-6 Wydawca: TANGER LTD, KELTICKOVA 62, SLEZSKA, OSTRAVA 710 00, CZECH REPUBLIC Opublikowano: Maj 2017 Miejsce wydania: Ostrava Autorzy / Redaktorzy / Twórcy Grupa MNiSW: Materiały z konferencji międzynarodowej (zarejestrowane w Web of Science) Punkty MNiSW: 15 Klasyfikacja Web of Science: Proceedings Paper ![]() Keywords: Hydromechanical bulge forming  hydroforming  upsetting ratio  axisymmetric components  all thickness distributions  |
The paper presents experimental results that concern hydromechanical bulging of copper axisymmetric components whose relative wall thickness was s(0)/D = 0.045. The investigations aimed to determine the impact of degree of deformation on wall thickness distribution in longitudinal section of hydromechanically bulged axisymmetric components. The degree of deformation of material was defined as relative upsetting ratio Delta l/l(0) (where Delta l - the punch displacement, l(0) - initial length of tube). Changes in the wall thickness distribution in longitudinal sections of hydromechanically bulged copper axisymmetric components with different ratio Delta l/l(0) = 0.054 divided by 0.109 were similar in character. The greatest wall thickening occurred on the radii of body transition to the spherical cup. The wall thinning was found to appear in the caps. The wall thickness in the cylindrical part of the axisymmetric components was compared with the initial thickness of the tube so. The maximum thickening and thinning of the wall were found in the samples with the greatest Delta l/l(0) = 0.109.