摘要
针对某特厚板连铸的七辊大压下扇形段,根据其结构特点及机架上框架、扇形段内外弧辊与夹紧油缸之间的关系,并通过数学公式推导,建立了辊缝调整的控制模型。该模型通过控制大压下扇形段的每个夹紧缸的位移量,实现扇形段入口、出口辊缝值的精确控制。利用该模型对三种不同工况的铸坯进行重压下实验,按照预先设定好的压下量及压下速率精确控制每个扇形段的动作过程,结果表明,铸坯中心疏松及缩孔明显减少,大大改善了铸坯质量。
For a certain thick plate continuous casting,based on its structural characteristics and the relationship between the upper frame on the stand,the inner and outer arc rollers of the segment,and the clamping oil cylinder,as well as derive through mathematical formulas,a control model of roller gap adjustment for seven roll heavy pressure segment section was established.The model achieves precise control of the roller gap at the inlet and outlet of the sector segment by controlling the displacement of each clamping cylinder under heavy pressure.The billet heavy pressing experiments were conducted under three different working conditions using this model,the action process of each segment was precisely controlled according to the pre-set pressing amount and rate,the results showed that the looseness and shrinkage in the billet center were significantly reduced,greatly improving the billet quality.
作者
李武红
曾晶
王文学
何博
马玉堂
王伦
LI Wuhong;ZENG Jing;WANG Wenxue;HE bo;MA Yutang;WANG Lun(China National Heavy Machinery Research Institute Co.,Ltd.,Xi’an 710018,China;Zhongjin Stainless Steel Co.,Ltd.,Guangxi Liuzhou Steel,Yulin 537624,Chian)
出处
《重型机械》
2024年第5期18-22,共5页
Heavy Machinery
关键词
特厚板
大压下
控制模型
压下量
压下速率
extra-thick plate
heavy reduction
control model
reduction
reduction rate
作者简介
李武红(1979—),男,硕士,中国重型机械研究院股份公司高级工程师,主要研究方向为连铸装备与工艺。
