大线能量焊接用船体结构钢的研究进展  

Research Progress on Hull Structural Steels by High Heat Input Welding

作　　者：付魁军[1] 及玉梅[1] 王佳骥[1] 刘芳芳[1] 

机构地区：[1]鞍钢股份有限公司技术中心,辽宁鞍山114009

出　　处：《鞍钢技术》2011年第6期7-12,共6页Angang Technology

摘　　要：介绍了大线能量焊接在船舶建造中的应用,对比了船体结构钢与其它钢种对大线能量焊接适应性的不同要求。针对大线能量焊接热影响区韧性下降问题,提出了目前提高热影响区韧性的主要措施。指出降低碳当量、细化热影响区奥氏体晶粒尺寸、利用有益氧化物诱导晶内铁素体析出是提高船体结构钢大线能量焊接适应性的有效途径。介绍了鞍钢在热影响区组织调控技术和氧化物诱导机理研究等方面取得的成果。The welding process by high heat input welding in ship-building is introduced and different requirements for welding hull structural steels and other steel grades with regard to the adaptability by high heat input welding are discussed based on comparison.Then key measures for improving toughness of HAZ are proposed to shoot the trouble of the low toughness in heat affected zone（HAZ） by high heat input welding.It points out that such measures as decreasing carbon equivalent,fining grain size of austenite in HAZ and inducing the intracrystalline ferrite to precipitate by making use of useful oxides are effective means to improve the adaptability for welding the hull structure steel by high heat input welding.Finally the research progress on the technology for adjusting and controlling microstructures in HAZ and inducing mechanism caused by oxides are also introduced in Angang.

关 键 词：大线能量焊接 船体结构钢 热影响区 冲击韧性 

分 类 号：TG457[金属学及工艺—焊接]