TMCP型大线能量焊接钢板Q345的试制  

Trial Production of Large Heat Input Welding Steel Plate Q345 With TMCP

作　　者：张彦召 周惠明 

机构地区：[1]舞阳钢铁有限责任公司

出　　处：《宽厚板》2009年第2期19-22,共4页Wide and Heavy Plate

摘　　要：随着钢结构未来向大型化发展,对钢的焊接线能量提出了>70 kJ/cm的新要求。根据Q345强度级别钢的技术条件和市场需求,通过合理的化学成分设计,采用合适的冶炼、轧制和正火工艺,保证力学性能,采用高效的气电立焊焊接方法进行最大线能量试制,不但提高了品种钢的大线能量特性,也为大线能量专用钢板研发提供生产工艺基础。Due to the large size development trend of the steel structure,the welding heat input is required to exceed 70 kJ/cm. According to the technical specification and market demand of Q345 grade steel , rational chemical composition design and proper melting, rolling and normalizing process are applied to ensure mechanical properties. Trial production with largest heat input welding is implemented with high effieient electrogas welding process, which not only enhances the large heat input characteristic of variety steel, but also provides the basis of production and process for large heat input welding steel plate.

关 键 词：大线能量 冶炼 轧制 冷却 高效焊接 气电立焊 

分 类 号：TG457.11[金属学及工艺—焊接]