Disclosed is a hot-rolled steel sheet for a vacuum train tube, which is excellent in terms of yield strength, weldability, low-temperature toughness of a welded part, and a vibration damping ratio, while having no hot cracks. The hot-rolled steel sheet according to the present invention comprises, in weight%, C: 0.06% or less (more than 0%), Si: 0.5-1.5%, Mn: 1.2-2.2%, Cu: 0.5-1.5%, Ni: 0.25% or more, Ti+Nb+V: 0.02% or less (including 0%), and the balance being Fe and inevitable impurities.
L'invention divulgue une tôle d'acier laminée à chaud pour un tube de train sous vide, qui est excellente en termes de limite d'élasticité, de soudabilité, de ténacité à basse température d'une partie soudée, et d'un rapport d'amortissement des vibrations, tout en ne présentant pas de fissures à chaud. La tôle d'acier laminée à chaud selon la présente invention comprend, en % en poids, C : 0,06 % ou moins (plus de 0 %), Si : entre 0,5 et 1,5 %, Mn : entre 1,2 et 2,2 %, Cu : entre 0,5 et 1,5 %, Ni : 0,25 % ou plus, Ti + Nb + V : 0,02 % ou moins (incluant 0 %) et le reste étant du Fe et des impuretés inévitables.
항복 강도, 용접성, 용접부 저온 인성, 진동 감쇠비가 우수하고, 열간 균열이 없는 진공 열차 튜브용 열연 강판에 대하여 개시한다. 본 발명에 따른 열연 강판은 합금 조성에서 중량%로, C : 0.06% 이하(0% 초과), Si: 0.5 ~ 1.5%, Mn : 1.2 ~ 2.2%, Cu : 0.5 ~ 1.5%, Ni : 0.25% 이상, Ti+Nb+V : 0.02% 이하(0% 포함), 나머지 Fe 및 불가피한 불순물을 포함하는 것을 특징으로 한다.
HOT-ROLLED STEEL SHEET FOR VACUUM TRAIN TUBE
TÔLE D'ACIER LAMINÉE À CHAUD POUR UN TUBE DE TRAIN SOUS VIDE
진공 열차 튜브용 열연 강판
2025-06-19
Patent
Electronic Resource
Korean
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