热轧Q355B带钢组织及性能稳定生产实践
Production Practice of Stable Microstructure and Properties of Hot Rolled Q355B Strip Steel
田仲良 1王利峰 2孙学玉2
作者信息
- 1. 河北工程大学材料科学与工程学院,河北 邯郸 056038;山西工程职业学院,山西 太原 030009
- 2. 河北新金钢铁有限公司,河北 武安 056300
- 折叠
摘要
通过低Mn、微Ti对低合金高强度结构钢Q355B化学成分进行优化,调整炼钢、轧钢工艺保证合金微观组织及力学性能稳定.Q355B热轧带钢沿横向微观组织均匀,晶粒尺寸相近,力学性能稳定,满足国标性能要求;细化晶粒、析出强化是Q355B热轧带钢强度提升的主要原因.
Abstract
Optimize the chemical composition of low alloy high-strength structural steel Q355B by reduce content of Mn and micro addition of Ti.Adjust technology of metallurgical and rolling processes to stable alloy microstructure and mechanical properties.Hot rolled Q355B strip steel has uniform microstructure,similar grain size,stable mechanical properties along the horizontal direction of slab,and meet the performance requirements of national standards.Refinement of grain size and precipitation strengthening are the main reasons for the strength improvement of Q355B hot-rolled strip steel.
关键词
Q355B/微观组织/力学性能/析出强化Key words
Q355B/microstructure/mechanical properties/precipitation strengthening引用本文复制引用
基金项目
邯郸市科学技术研究与发展计划(21422111239)
出版年
2024
NETL
NSTL
万方数据