Steel plate for 390 MPa high input energy welding ocean platform and production method thereof

• Main Authors: LU XIAOYU, YANG XIONG, JIANG BINGKUN
• Format: Patent
• Language: Chinese; English
• Published: 31.05.2017
• Subjects: ALLOYS; CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; FERROUS OR NON-FERROUS ALLOYS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS; METALLURGY; METALLURGY OF IRON; MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TREATMENT OF ALLOYS OR NON-FERROUS METALS

The invention discloses a steel plate for a 390 MPa high input energy welding ocean platform. The steel plate for the 390 MPa high input energy welding ocean platform is characterized in that the chemical components comprises, by weight, of 0.07%-0.09% of C, 0.20%-0.30% of Si, 1.3%-1.6% of Mn, 0.015% or the less of P, 0.010% or the less of S, 0.03%-0.05% of Nb, 0.02% or the less of Ti, 0.01%-0.025% of Al, 0.002%-0.006% of Ca, 0.002%-0.006% of Ce, and the balance Fe and impurities. The invention further discloses a production method of the steel plate for the 390 MPa high input energy welding ocean platform. The steel plate for the ocean platform has good low-temperature impact toughness and welding performance. 本发明公开了种390MPa级大线能量焊接海洋平台用钢板，其特征在于：化学成分按重量百分比包括C 0.07～0.09％、Si 0.20～0.30％、Mn 1.3～1.6％、P≤0.015％、S≤0.010％、Nb 0.03～0.05％、Ti≤0.02％、Al 0.01～0.025％、Ca 0.002～0.006％、Ce 0.002～0.006％，余量为Fe和杂质。本发明还公开了种390MPa级大线能量焊接海洋平台用钢板的生产方法。利用本发明生产的海洋平台用钢板具有良好的低温冲击韧性以及焊接性能。