A shock absorbing member which can increase impact absorption energy and also enables thinning of a steel sheet that is a starting material, a method for producing the shock absorbing member, and a method for producing a steel sheet for cold plastic working are provided. The shock absorbing member includes a ridge portion formed in a curved shape as viewed from a longitudinal direction, and a wall portion extending from the ridge portion. In the wall portion, a ratio σ5/τ5 between a tensile stress σ5 when an elongation in a tensile test is 5% and a shear stress τ5 when a shear strain in a shear test is 5√3% is 1.70 or less, or a ratio σ10/τ10 between a tensile stress σ10 when an elongation in a tensile test is 10% and a shear stress τ10 when a shear strain in a shear test is 10√3% is 1.70 or less. A Vickers hardness Hvc at a center portion of the wall portion as viewed from the longitudinal direction is 250 or more.
SHOCK ABSORBING MEMBER, METHOD OF MANUFACTURING SHOCK ABSORBING MEMBER, AND METHOD OF MANUFACTURING STEEL PLATE FOR COLD PLASTIC WORKING
STOSSABSORBIERENDES ELEMENT, VERFAHREN ZUR HERSTELLUNG EINES STOSSDÄMPFERTEILS UND VERFAHREN ZUR HERSTELLUNG EINES STAHLBLECHS FÜR KALTPLASTIK
ÉLÉMENT D'ABSORPTION DE CHOCS, PROCÉDÉ DE FABRICATION D'ÉLÉMENT D'ABSORPTION DE CHOCS ET PROCÉDÉ DE FABRICATION DE PLAQUE D'ACIER POUR FORMAGE PAR DÉFORMATION PLASTIQUE À FROID
21.09.2022
Patent
Elektronische Ressource
Englisch
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