高线轧机特高轧制速度下轧件变形行为研究  

Study on Effect of Rolled Metal Forming at Very High Rolling Speed

作　　者：帅习元[1] 黄静[1] 吴超[1] 周勇[1] 仇东丽[1] 

机构地区：[1]武汉钢铁(集团)公司研究院,湖北武汉430080

出　　处：《中国冶金》2012年第10期18-22,共5页China Metallurgy

摘　　要：用纯铁作为试验原料,进行了特高轧速的生产试验,结果表明原料某部位晶粒大,轧后对应部位晶粒也大,某部位晶粒小,则轧后对应部位晶粒也小,在精轧机出口速度为100m/s、变形速率相当于2 880s-1的条件下,轧件并未仅产生表面变形,轧件的变形也已渗透到轧件的中心。坯料晶粒均匀,轧后轧件的晶粒也均匀。但从轧件纵截面的晶粒形状看,轧件中心晶粒沿纵向稍有伸长,表面晶粒沿纵向稍有压缩,这是由于孔型轧制的特殊性造成的。The experiments were carried out by using pure iron at very high rolling speed.The results showed that the grain size of the rolled products in some area is big or small corresponded by the grain size of the base.The deformation of the rolled metal was not only formed on the surface,but also infiltrated to the centre when the rolling speed is set to 100 m/s with the corresponded strain rate is 2 880 s-1.The grain size of the rolled products fits well when the grain size of the base distributed well.In vertical section of the specimen,the grains were extended in longitudinal direction near the centre,but compressed in longitudinal direction near the surface.It is determined by the unique character of groove rolling.

关 键 词：特高轧制速度 变形速率 表面变形 

分 类 号：TG335.15[金属学及工艺—金属压力加工]