高线φ8-10mm规格HRB500E成品头尾缺陷研究  

Research on Head and Tail Defects of High Speed Wire HRB500E withφ8-10mm

作　　者：邱冬 颜宜斌 李贺 黄小山 闫博 张春斌 QIU Dong;YAN Yi-bin;LI He;HUANG Xiao-shan;YAN Bo;ZHANG Chun-bin(Xinsteel,Xinyu,Jiangxi,338000,P.R.China)

机构地区：[1]新余钢铁股份有限公司,江西新余338000

出　　处：《南方金属》2025年第2期22-26,共5页Southern Metals

摘　　要：高速线材生产线主要生产品种包含了φ8-10mm规格的热轧带肋抗震钢筋,生产过程中头尾时常出现成品盘卷中弯头、扁钢的缺陷,这些缺陷不但会损害产品表面质量,降低产品的使用性能,还会极大影响产线各项指标。对头尾缺陷盘卷进行检查与分析,事故原因为φ8-10mm螺纹生产过程中,精轧机与吐丝机之间的轧件抖动严重,夹送辊进出口导卫稳定功能不足,夹送辊进口偏离轧制线导致轧件头尾部夹持异常,从而造成头部弯曲或尾部扁钢。分别对PR5、PR6夹送辊进行轧制线重新校准,优化PR5、PR6夹送辊进出口导卫孔型尺寸,有效改善了扁钢缺陷现象,解决了φ8-10mm规格成品出现头尾缺陷的问题,并有效提升了产线生产该规格的各项指标。The main products of the high-speed wire production line include hot-rolled ribbed seismic steel bars withφ8-10mm.During the production process,defects such as the head and tail with bends and flats in the finished coil often occur.These defects not only damage the surface quality of the product,reduce its performance,but also greatly affect various indicators of the production line.The inspection and analysis of the head and tail defective coils determined that the cause of the accident was severe shaking of the rolled piece between the precision rolling stands and the twister during the production process of the high speed wire withφ8-10mm.The stable function of the inlet and outlet guides of the pinch roll was insufficient,and the deviation of the pinch roll inlet from the rolling line caused abnormal clamping of the head and tail of the rolled piece,resulting in head bending or tail flatting.By recalibrating the rolling lines of the pinch rolls PR5 and PR6 separately,and optimizing the diameter of the guide holes at the inlet and outlet of the pinch rolls PR5 and PR6,the phenomenon of flat defects was effectively improved.Ultimately,the problem of head and tail defects in finished products with diameters of 8-10mm was solved,and various indicators of the production line for these sizes were effectively improved.

关 键 词：弯头 扁钢 轧制线校准 夹送辊 导卫结构 

分 类 号：TG322.13[金属学及工艺—金属压力加工]