| 冷轧激光焊接DP780高铝双相带钢表面印迹产生原因 |
| |
| 引用本文： | 刘颖,周朝刚,汪云辉,王书桓,艾立群,王海龙.冷轧激光焊接DP780高铝双相带钢表面印迹产生原因[J].机械工程材料,2021,45(2):96-101. |
| |
| 作者姓名： | 刘颖 周朝刚 汪云辉 王书桓 艾立群 王海龙 |
| |
| 作者单位： | 唐山科技职业技术学院,唐山 063009;华北理工大学冶金与能源学院,唐山 063009;唐山市特种冶金及材料制备重点实验室,唐山 063009;河钢集团唐钢公司技术中心,唐山 063016;华北理工大学冶金与能源学院,唐山 063009;唐山市特种冶金及材料制备重点实验室,唐山 063009;华北理工大学冶金与能源学院,唐山 063009;唐山市特种冶金及材料制备重点实验室,唐山 063009;河钢集团唐钢公司技术中心,唐山 063016 |
| |
| 摘 要： | DP780高铝(铝质量分数在0.55%~0.70%)双相钢经热轧、头尾激光焊接、酸洗、冷轧后,其带钢表面出现印迹,通过显微组织、化学成分和硬度分析研究了印迹产生原因。结果表明:在DP780双相钢焊接过程中,焊缝金属中的铝元素发生氧化形成氧化铝,氧化铝未能在酸洗中有效清除;在冷轧时硬质氧化铝造成工作辊损伤,从而在带钢表面形成印迹。提高焊接速度、酸液浓度和酸洗温度能完全消除带钢表面印迹。
|
| 关 键 词： | 高铝双相钢 激光焊接 酸洗 焊缝氧化 |
Causes of Surface Imprints of Laser Welded DP780 High-Aluminum Dual-Phase Strip Steel after Cold Rolling |
| |
| LIU Ying,ZHOU Chaogang,WANG Yunhui,WANG Shuhuan,AI Liqun,WANG Hailong.Causes of Surface Imprints of Laser Welded DP780 High-Aluminum Dual-Phase Strip Steel after Cold Rolling[J].Materials For Mechanical Engineering,2021,45(2):96-101. |
| |
| Authors: | LIU Ying ZHOU Chaogang WANG Yunhui WANG Shuhuan AI Liqun WANG Hailong |
| |
| Affiliation: | (Tangshan Vocational College of Science and Technology,Tangshan 063009,China;School of Metallurgy and Energy,North China University of Science and Technology,Tangshan 063009,China;Tangshan Special Metallurgy and Material Preparation Laboratory,Tangshan 063009,China;Technology Center of Tangshan Iron and Steel company of HBIS Group,Tangshan 063016,China) |
| |
| Abstract: | Imprints appeared on the surface of DP780 high-aluminum(aluminum mass fraction of 0.55%-0.70%)dual-phase strip steel by hot rolling,head-to-tail laser welding,pickling and cold rolling.Causes of the imprints were studied by the microstructure,chemical composition and hardness analysis.The results show that during welding of DP780 dual-phase steel,the aluminum element in the weld metal was oxidized and alumina formed.The alumina was not effectively removed by pickling.During cold rolling,the hard alumina caused damage of the work roll,leading to the imprints on the surface of the strip steel.The surface imprint of the strip steel was completely eliminated by increasing the welding speed,the concentration of acid solution and the pickling bath temperature. |
| |
| Keywords: | high-aluminum dual-phase steel laser welding pickling weld oxidation |
| 本文献已被 维普 万方数据 等数据库收录！ |
|
