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发明授权
CN107904504B 一种正火态交货的可大线能量焊接用EH36特厚板及制备方法 有权

一种正火态交货的可大线能量焊接用EH36特厚板及制备方法
摘要：
一种正火交货的可大线能量焊接用EH36特厚钢板，所述钢板中，Als含量为0.08％‑0.05％，Nb含量≥0.025％，N含量为80‑100ppm，V含量为0.06‑0.10％，所述各含量以质量百分含量计；所述钢板中V，Ti和N的含量满足：V/N≥6.0，Ti/N≥1.5，同时本发明还提供种所述钢板的制备方法。本发明生产的正火特厚板能够同时满足80‑100mm规格EH36的性能指标要求，同时还能适应100‑200kJ/cm可大线能量焊接要求。本发明中钢板的制备工艺简单、综合力学性能优良，可广泛的应用于船舶、海洋工程装备制造、海上风电等领域。
摘要（英）：

Provided is an as-normalized EH36 extra-thick steel plate useful for high heat input welding. The steel plate comprises the following components in mass percent: 0.08%-0.05% of Als, greater than or equal to 0.025% of Nb, 80-100 ppm of N, and 0.06-0.10% of V. The content of V, Ti and N in the steel plate satisfies that V/N is greater than or equal to 6.0 and TI/N is greater than or equal to 1.5. The present invention also provides a preparation method of the steel plate at the same time. The normalized extra-thick plate produced according to the present invention can meet the requirements of performance indicators of 80-100 mm EH36 simultaneously, and can also meet the requirements of high heat input welding. According to the present invention, the steel plate is simple in preparation process and excellent in overall mechanical performance, and can be widely applied to the fields of shipbuilding, ocean engineering equipment manufacturing, offshore wind power and the like.

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