桥梁用耐候结构钢Q355NH的研制  

Research and Development of Atmospheric Corrosion Resisting Structural Steel Q355NH for Bridge

作　　者：董中波[1] 邹德辉[1] 程吉浩[1] 

机构地区：[1]武汉钢铁(集团)公司研究院,湖北武汉430080

出　　处：《山东冶金》2017年第1期9-11,共3页Shandong Metallurgy

摘　　要：以低C-Mn为基,辅以Cu、Cr、Ni等元素微合金化,配合合理的控轧控冷工艺生产,开发了桥梁用耐候结构钢Q355NH。对试制钢板进行了各项力学性能、焊接性能及耐大气腐蚀性能检验。结果表明:Q355NH钢强度高,韧塑性优异,焊接接头性能优良,具有较好的耐大气腐蚀性能,满足桥梁用耐候结构钢的需求。Atmospheric corrosion resisting structural steel Q355NH for bridge was developed by using low C-Mn as the base, and Cu, Cr, Ni elements were used to controlled roiling and cooling process. The mechanical properties, welding performance and atmospheric corrosion resistance of the steel plate were tested. The results show that the Q355NH steel had high strength, excellent toughness, excellent welding joint performance and better resistance to atmospheric corrosion performance, which could meet the requirements of atmospheric corrosion resisting structural steel Q355NH for bridge.

关 键 词：耐候结构钢 Q355NH钢 耐大气腐蚀性能 

分 类 号：TG142.1[一般工业技术—材料科学与工程]