大弯曲难变形高合金钢棒材矫直精度研究  

Study on straightening accuracy of high-alloy steel bars with large bending and difficult-to-deformation

作　　者：王仕杰[1] 贾尚武[1] 张志娜[1] 卢星 刘磊[1] 牛端阳 WANG Shi-jie;JIA Shang-wu;ZHANG Zhi-na;LU Xing;LIU Lei;NIU Duan-yang(China National Heavy Machinery Research Institute Co.,Ltd.,Xi’an 710018,China;Shan Xi Metallurgical Design&Research Institute Co.,Ltd.,Xi’an 710018;HBIS Group Shisteel Company,Shijiazhuang 050031,China)

机构地区：[1]中国重型机械研究院股份公司,陕西西安710018 [2]陕西冶金设计研究院有限公司,陕西西安710018 [3]河钢集团石钢公司,河北石家庄050031

出　　处：《重型机械》2023年第2期72-77,共6页Heavy Machinery

摘　　要：由于大弯曲难变形合金钢棒材的弯曲度较大、咬入困难,多采用上下同步驱动、对辊压紧的多辊矫直机进行矫直,但是对于其矫直精度没有一个定量的表达。从矫直变形机理入手,分析影响矫直精度的因素,得出调节变形量逐渐越小,矫直辊轴线与矫直线的夹角越小。“矫弯”负作用系数越小,矫直精度越高。最后通过Abaqus软件对棒材纯弯曲过程进行了数值分析,通过理论计算、有限元数据、试验数据的对比,证明了提高棒材矫直精度方法的正确性。Due to the large curvature and difficulty in biting into of large bending and hard-to-deform alloy steel bars,multi-roller straightening machines with simultaneous upper and lower drive and roll compression are mostly used for straightening the bars,but there is no quantitative expression for its straightening accuracy.This paper analyzes the factors affecting the straightening accuracy from the straightening deformation mechanism,it concluded that the smaller the adjustment deformation,the smaller the angle between the straightening roller axis and the straightening line,the smaller the negative effect coefficient of straightening-bending,the higher the straightening accuracy.Finally,numerical analysis of the pure bending process for bars was developed using Abaqus software,and through comparing theoretical calculations,finite element analysis and experimental data,to prove that the method of improving the straightening accuracy is correct.The ness of bars was demonstrated.

关 键 词：大弯曲 难变形 棒材矫直 精度 

分 类 号：TG333.7[金属学及工艺—金属压力加工]