摘要
针对H488×300规格型钢"舌头"较长的问题,改用小坯型轧制技术,将原料坯型由BB2改为BB1。通过改进粗轧机的孔型系统及减少轧制道次,进行了扩腰轧制。实际生产表明,改坯型轧制解决了因"舌头"引起的堆钢问题,产量提高近20%,成材率由95%提高到95.8%。
Considering the problem of H-beam＇s long＂tong＂in producing H488 × 300 H-beam,the small blank type technology was adopted,that is,using the BB1 beam blank instead of the BB2 beam blank.Through improving the rough mill groove system and reducing the rolling pass,enlarging rolling was carried out.The practice production showed that the rolling technology by changing beam bland solved the problem of the H-beam hitting the guide-plate,the productivity was increased by 20% almost and the qualified product ratio was increased to 95.8% from 95%.
出处
《山东冶金》
CAS
2010年第2期32-33,共2页
Shandong Metallurgy
关键词
大H型钢
坯型
扩腰轧制
孔型
heavy H-beam
beam blank
enlarging rolling technology
groove system
