高强度船板钢DH36的研制.pdfVIP

高强度船板钢 DH36 的研制 1 1 1 1 1 2 2 2 白 冰 王 蕾 金 潮 阎丽娟 王立军 熊 坚 杨凌峰 曾凡德 （1.中冶京诚工程技术有限公司，北京 100176 ；2.萍钢实业股份有限公司，九江 332500 ） 摘 要 本文论述某钢铁企业中厚板厂厚度30mm 高强度船体用结构钢DH36 的试制情况,以高强度船体用结构钢 DH36 的合金化成分设计和性能要求为前提，研究连铸板坯质量、送钢制度、轧制工艺等对船板钢DH36 显微组织、 力学性能和拉伸断口的影响，对生产的船板钢DH36 产品出现的力学性能差异及拉伸断口问题进行分析，提出相应 的解决方案,最终制定出最佳化的合金成分设计和适宜的轧制工艺，研究结果表明该生产工艺下试验钢的显微组织 和各项力学性能指标均符合中国船级社DH36 高强度船体用结构钢的标准。 关键词 船板钢 送钢制度 轧制工艺 力学性能 拉伸断口 Study on High Strength Hull Structural Steel DH36 Bai Bing1 Wang Lei1 Jin Chao1 Yan lijuan1 Wang Lijun1 Xiong Jian2 Yang Lingfeng2 Zeng Fande2 （1. MCC Capital Engineering Research Incorporation Limited, Beijing, 100176; 2. Pinggang Industrial Co., Ltd., Jiujiang, 332500 ） Abstract Trial production of high strength hull structural steel DH36 which thickness is 30mm in a Medium and Heavy Plate Plant of a specific steel enterprise are discussed in this paper. According to requirements of alloy ingredient design and mechanical properties of high strength hull structural steel DH36, effects of slab quality of continuous casting, delivery system of steel and controlled rolling technology, etc on microstructure, mechanical properties and tensile fracture of hull structural steel DH36 were investigated. The difference of mechanical properties and the problems of tensile fracture of hull structural steel DH36 which are produced in different process technology were analyzed, and the corresponding improvement programs were proposed. An optimization of alloy design and appropriate controlled rolling technology is established in th