钢管热处理线斜辊矫直机矫直原理及常见辊系浅析  

Analysis of straightening principle and common roll system of inclined roll straightener for steel pipe heat treatment line

作　　者：张建军[1] 程斯祥 谷瑞杰[2] 王建国[2] ZHANG Jianjun;CHENG Sixiang;GU Ruijie;WANG Jianguo(Hengyang Hualing Steel Pipe Co.,Ltd.,Hengyang 421001,Hunan China;China National Heavy Machinery Research Institute Co.,Ltd.,Xi'an 710032,Shaanxi China)

机构地区：[1]衡阳华菱钢管有限公司,湖南衡阳421001 [2]中国重型机械研究院股份公司,陕西西安710032

出　　处：《锻压装备与制造技术》2020年第3期89-94,共6页China Metalforming Equipment & Manufacturing Technology

摘　　要：本文通过对金属轧件弯曲变形与曲率的变化、矫直原理、斜辊式矫直机的矫直原理的阐述,分析了常见三种辊系布置的斜辊矫直机的特点,三种辊系对钢管矫直过程中弹塑性变形区长度和应力反向次数的影响,提出了热处理线斜辊矫直机辊系选型的理论参考依据。同时指出了十辊矫直机增加了矫直单元,矫直质量更稳定,生产效率更高;但通过对钢管原始几何尺寸,加热过程及淬火环节的控制,减小钢管矫直前的原始曲率,选择六辊或七辊矫直机可以节约矫直机的投资运行成本,也能达到满意的矫直精度。By explaining the bending deformation and curvature change of metal rolled parts,the principle of straightening,and the straightening principle of inclined roll straighteners,the characteristics of three kinds of common roll system for inclined roll straighteners have been analyzed in the text,as well as the its influence on the length of the elasto-plastic deformation zone and the number of stress reversals in the steel pipe straightening process.The theoretical reference for the selection of the roller system of the inclined roller straightener of the heat treatment line has been proposed.At the same time,it is pointed out that the ten-roller straightening machine with addition of a straightening unit has more stable straightening quality and higher the production efficiency;however,by controlling the original geometric size of the steel pipe,the heating process&the quenching link and reducing the original curvature of the steel pipe before straightening,the selection of six-roller or a seven-roller straightener can reduce the investment and running cost of the straightener and achieve the satisfied straightening accuracy.

关 键 词：弹塑性变形 辊系布置 矫直原理 直线度 椭圆度 

分 类 号：TG333.23[金属学及工艺—金属压力加工]