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大型原油储罐用B610E(08MnNiVR)高强度调质钢板研制 总被引:3,自引:0,他引:3
介绍了在宝钢分公司厚板厂产线上开发成功的大型原油储罐用B610E(08MnNiVR)高强度钢板的成分和性能特点、生产工艺,列举了典型厚度钢板的实物性能,试验和分析了其大热输入焊接的适应性。研究结果表明,宝钢分公司厚板厂产线工业批量生产的B610E(08MnNiVR)钢板性能稳定。完全满足10万m。大型原油储罐用大热输入焊接高强度钢板技术要求,已成功地用于建造10万m。原油浮顶储罐。 相似文献
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应用金相显微镜、扫描电镜、电子探针等设备对12MnNiVR钢板拉伸断口分层的原因进行研究.对断口形貌进行了观察,并对金相组织和断口非金属夹杂物进行了分析,结果发现轧制工艺与热处理工艺对分层影响不大,分层的主要原因是钢板中心偏析严重,同时存在粗大马氏体组织,变形时容易在带状马氏体中产生应力集中,导致裂纹沿着MnS或Ti(... 相似文献
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根据新一代石油储罐用试验钢板奥氏体组织在连续冷却条件下的相转变行为,对不同淬火、回火工艺下,12MnNiVR钢板组织与性能的变化规律展开深入研究,从而将何种工业生产条件有利于调质热处理工艺制度给确定下来,最终的试验结果告诉我们,最佳的力学性能匹配需要同时具备940℃淬火和620℃到660℃回火工艺这两个条件,缺一不可. 相似文献
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《钢铁研究学报(英文版)》2011,(Z1):769-772
The weldability of 12MnNiVR was examined in terms of the simulated HAZ continuous cooling transformation (SH-CCT) diagram,microstructure and mechanical properties of the simulated coarse grain heat-affected zone (CGHAZ).When t 8/5 is shorter,the microstructure mainly consists of lath bainite.When t 8/5 is 60 s,the microstructure becomes coarser bainite.Some acicular ferrite appears beside lath bainite when t 8/5 =100s.Finally,a microstructure composed of polygonal ferrite,acicular ferrite,and small amount pearlite is obtained with a small amount of bainite at t 8/5 >100s.With the increase of t 8/5,the hardness of CGHAZ decreases considerably.The minimum impact toughness of CGHAZ appears at t 8/5 =100s.The hardness and the toughness of CGHAZ remain above the specified values for steel 12MnNiVR. 相似文献
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简要介绍了氧气转炉炼钢、连续铸钢、炉外精炼及控冷控轧技术的特点及优势,指出20世纪中国钢铁工业发展所存在的问题,展望21世纪先进钢铁生产流程中氢冶金、新一代可循环钢铁流程、铸-轧-材一体化技术的实现.在此基础上,介绍先进钢铁材料的研究开发现状. 相似文献
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采用实物焊接和热模拟的方法研究了大型原油储罐用610MPa级高强度钢板大热输入焊接性能。结果表明,试验钢具有良好的抗大热输入量焊接的能力,原因是钢板中存在大量细小、弥散分布的TiN复合粒子,在焊接热循环的高温阶段,TiN粒子通过有效钉轧奥氏体晶界和促进铁素体晶内形核,抑制了焊接热影响区组织粗化;采用气电立焊和埋弧横焊焊接后,焊接对接接头的拉伸强度、低温冲击和冷弯性能优良,性能指标富余量大,试验钢板完全可以应用于10万m3及以上大型石油储罐的建造。 相似文献
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Ǯ���������������������߽�ʤ 《钢铁研究学报》2014,26(10):66-73
In order to find out the differences between domestic and imported LX80B steel wire rods, intrinsic quality and mechanical properties were studied by OM, SEM, EPMA, tensile testing machine and other instruments. The results show that the quantity of brittle non-metallic inclusions of domestic steel wire rods is 5 times as many as imported steel wire rods. The serious carbon segregation in domestic steel wire rods results in delamination fracture during twisting. The oxide scales of domestic and imported steel wire rods are composed of inner layer (Fe1-yO) and outer layer (Fe3O4), yet the thickness of oxide scale for domestic ones is smaller than that of imported ones. The microstructure of domestic ones is composed of proeutectoid cementite and pearlite, while that of imported ones is mainly pearlite. The large variation of lamellar spacing of pearlite results in a large variation of mechanical properties of domestic ones. 相似文献