海上风电塔架用超宽DH36钢板性能研究  

Investigation on properties of super-wide DH36 plate used in offshore wind power tower

作　　者：李高盛 殷俊 曹菡 严帅 卢华兴 鲁仰辉 LI Gaosheng;YIN Jun;CAO Han;YAN Shuai;LU Huaxing;LU Yanghui(SPIC Central Research Institute,Beijing 102209,China;SPIC Guangdong Electric Power Co.,Ltd.,Guangzhou 511455,China)

机构地区：[1]国家电投集团科学技术研究院有限公司,北京102209 [2]国家电投集团广东电力有限公司,广东广州511455

出　　处：《轧钢》2021年第4期29-32,共4页Steel Rolling

基　　金：辽宁省10MW柔性塔架海上风电机组载荷优化与容错控制项目(2019JH8/10100068)。

摘　　要：随着海上风电建设的快速发展,如何降低基础建设成本,增加结构强度是海上风电建设关注的重点问题之一。以增加钢板规格从而减少焊缝、提高强度为目标,采用复合轧制工艺和TMCP工艺,在某5500 mm轧机上成功试制出风电塔架用80 mm(厚)×4500 mm(宽)×15000 mm(长)DH36钢板。钢板拉伸性能、冲击韧性和弯曲性能均满足标准要求且不同方向性能差异较小;钢板1/2厚度与1/4厚度处晶粒度差异较小,均为9.5级;钢板界面复合良好,弯曲试验未见中心开裂,显微组织无可见界面。With the rapid development of offshore wind power construction,how to reduce infrastructure costs and increase structural strength is one of the key issues that offshore wind power construction pays attention to.Aiming to increase the size of the plate,reduce the welding seam and increase strength,the cladding rolling process and the TMCP process were used to successfully trial-produce the 80 mm(thickness)×4500 mm(width)×15000 mm(length)DH36 plate for offshore wind power tower in a 5500 mm rolling mill.The tensile properties,impact toughness and bending properties of the plate meet the standard requirements,and the performance difference in each direction is small.The difference in grain size between 1/2 thickness and 1/4 thickness of the plate is small,both at 9.5 grade;the interface of the plate is well compounded,the central cracking is not seen in the bending test,and the microstructure has no visible interface.

关 键 词：风电塔架 DH36钢板 超宽规格 复合轧制 TMCP工艺 力学性能 

分 类 号：TM614[电气工程—电力系统及自动化] TG142.1[一般工业技术—材料科学与工程]