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CN105200336A 基于应变设计地区用高性能抗大变形管线钢及制备方法 无效 - 驳回

基于应变设计地区用高性能抗大变形管线钢及制备方法
摘要：
一种基于应变设计地区用高性能抗大变形管线钢及制备方法，属于高强度管线钢技术领域。管线钢的化学成分为：C：0.04～0.07％，Nb：0.02～0.05％，Si：0.10～0.30％，Mn：1.00～1.60％，Alt：0.01～0.05％，Ti：0.015～0.025％，Ni：0.15～0.40％，Cr：0.10～0.30％，Cu：0.10～0.30％，P：≤0.012％，S：≤0.003％，N：≤0.005％，O：≤0.002％，B：≤0.0004％，余量为Fe和不可避免杂质元素，且C+Nb：0.08～0.10％，Cr+Cu：0.20～0.40％，P+S+N+O+B：≤0.016％，均为重量百分数。优点在于，具有优良的抗大变形能力、低温韧性、CTOD断裂韧性、抗酸性能。
摘要（英）：

The invention discloses strain design region based high-performance pipeline steel with high-deformation resistance and a preparation method and belongs to the technical field of high-strength pipeline steel. The chemical composition of the pipeline steel comprises components in percentage by weight as follows: 0.04%-0.07% of C, 0.02%-0.05% of Nb, 0.10%-0.30% of Si, 1.00%-1.60% of Mn, 0.01%-0.05% of Alt, 0.015%-0.025% of Ti, 0.15%-0.40% of Ni, 0.10%-0.30% of Cr, 0.10%-0.30% of Cu, smaller than or equal to 0.012% of P, smaller than or equal to 0.003% of S, smaller than or equal to 0.005% of N, smaller than or equal to 0.002% of O, smaller than or equal to 0.004% of B and the balance of Fe and inevitable impurities, wherein the content of C and Nb is 0.08%-0.10%, the content of Cr and Cu is 0.20%-0.40%, and the content of P, S, N, O and B is smaller than or equal to 0.016%. The high-performance pipeline steel has the advantages of excellent high-deformation resistance, low-temperature toughness, CTOD (crack tip opening displacement) fracture toughness and acid resistance.

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