Design Method of Roller Shape for Bar Two-Roll Straightener Based on Plastic 5ε<sub>t</sub> and Neutral Layer Offset

doi:10.7652/xjtuxb201507013

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Design Method of Roller Shape for Bar Two-Roll Straightener Based on Plastic 5ε_t and Neutral Layer Offset

更新时间：2025-07-09

- Design Method of Roller Shape for Bar Two-Roll Straightener Based on Plastic 5ε_t and Neutral Layer Offset
- Vol. 49, Issue 7, Pages: 72-81(2015)
- 作者机构：
  
  1. 太原科技大学山西省冶金设备设计理论与技术重点实验室,太原,030024
  2. 吉林大学超塑性与塑性研究所,长春,130000
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb201507013
  CLC： TG333.2
- Online First：10 July 2015，
  
  Published：2015
- 稿件说明：
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Design Method of Roller Shape for Bar Two-Roll Straightener Based on Plastic 5ε_t and Neutral Layer Offset[J]. 2015, 49(7): 72-81. DOI: 10.7652/xjtuxb201507013.
DOI：

Design Method of Roller Shape for Bar Two-Roll Straightener Based on Plastic 5ε_t and Neutral Layer Offset[J]. 2015, 49(7): 72-81. DOI: 10.7652/xjtuxb201507013. DOI：

摘要

为了提高棒材二辊矫直机的矫直精度

依据棒材矫直工艺特点和矫直辊磨损区域分析

提出了“凹三凸二”的矫直辊组合形式及辊型设计方法。在辊型设计过程中

根据棒材矫直的实际变形规律

提出了塑性5ε

矫直应力应变拟合原则

更加准确地描述了棒材矫直变形的应力应变关系; 结合微元法对矫直棒材内部金属的受力状态及中性层偏移进行分析

推导出了含有硬化系数与中性层偏移的新弯矩比公式。在此基础上

通过对矫直力与辊面磨损关系以及残余应力和弹性芯对隐患挠度影响的综合分析

精确给出了矫直不同规格棒材时辊腰段的反弯曲率比范围

从而能最大限度地降低辊面磨损

克服因残余应力回复而导致矫直质量不稳定的缺陷。基于上述理论和方法

给出了具体设计实例

并对矫直过程进行了数值模拟分析

给出了矫直过程中影响棒材矫后精度的各参量状态。结果表明:设计辊型的残余直线度为0.64 mm/m

隐患挠度为0.202 4 mm/m

预测弹复后直线度小于0.85 mm/m

从而显著提高了棒材的矫后精度及其稳定性

同时也验证了该设计理论与方法的正确性及有效性。

Abstract

According to the bar straightening process features and wear area of straightening roll

the design method of “three-stage concave roll and two-stage convex roll” was put forward to improve the straightening accuracy of two-roll straighter. In the design process

based on the bar deformation rule

the principle of 5ε

fitting was put forward to describe the stress-strain relationship more accurately and effectively. On the basis of fitting rule and micro-element method

the stress state of metal inside the bar and the neutral layer offset were analyzed

then the bending moment ratio

including hardening coefficient and neutral layer offset was deduced. From the comprehensive analysis of the relation of straightening force with the roller wear

as well as the effects of residual stress and elastic core on the hidden deflection

the range of reverse bend curvature ratio of roller lumbar segment was determined for different bar sizes

and hence the wear of roller surface could be slowed down

and the defect of unstable straightening quality caused by residual stress response was overcome greatly. Based on the proposed theory and method

the specific design example was provided to simulate the straightening process

and each parameter which might affect the straightening accuracy was analyzed. It can be found that the straightening accuracy of the designed roll shape could reach to 0.64 mm/m

the hidden deflection was 0.202 4 mm/m

and the prediction accuracy after straightening was less than 0.85 mm/m. The stability and reliability of the bar straightening were guaranteed

and the correctness and effectiveness of the theory and design method were verified.

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references

王云, 刘才, 马立东, 等. 二辊矫直机凹辊辊形设计 [J]. 钢铁, 2013, 48(4): 45-50.

WANG Yun, LIU Cai, MA Lidong, et al. Design of concave roller shape for two-roll straightener [J]. Iron and Steel, 2013, 48(4): 45-50.

胡大超, 陈豪敏. 棒管材矫直机辊形曲面的设计研究 [J]. 机械设计与制造, 2009(2): 145-146.

HU Dachao, CHEN Haomin. The design and study of roller curvature for the tube or bar straightener [J]. Machinery Design Manufacture, 2009(2): 145-146.

徐国平, 张智峰, 胡大超. 二辊矫直机辊形参数的探究 [J]. 重型机械, 2014(1): 46-50.

XU Guoping, ZHANG Zhifeng, HU Dachao. Research on roller shape parameters of two-roller straightener [J]. Heavy Machinery, 2014(1): 46-50.

杜晓钟, 孙斌煜. 共轭旋转曲面法求解线棒材矫直辊形曲线 [J]. 太原重型机械学院学报, 2004, 25(4): 250-253.

DU Xiaozhong, SUN Binyu. Analytic solution of roll shape curve of bar straightening roll by conjugate surface theory [J]. Journal of Taiyuan Heavy Machinery Institute, 2004, 25(4): 250-253.

崔甫. 二辊式矫直机的理论分析与计算 [J]. 冶金设备, 1982(5): 41-49.

CUI Fu. Theory analysis and calculation of two roll straightener [J]. Metallurgical Equipment, 1982(5): 41-49.

崔甫. 旋转二辊式矫直机的设计研究 [J]. 冶金设备, 1984(5): 31-34.

CUI Fu. Design and research on rotate two roll straightener [J]. Metallurgical Equipment, 1984(5): 31-34.

日本塑性加工学会. 非线性有限元要素法: 线性弹性解析かと塑型加工解析まて [M]. 東京: コロナ社, 1992: 35-158.

LI Ke-Yang, CHEN Chao-Kuang, YANG Shyue-Cheng. Profile determination of a tube-straightening roller by envelope theory [J]. Journal of Materials Processing Technology, 1999, 94: 157-166.

刘志亮. 棒材二辊矫直机辊形及变形机理研究 [D]. 秦皇岛: 燕山大学, 2009.

BETEGON B C, DEL COZ D J J, GARCIA N P J, et al. Nonlinear analysis of residual stress in a rail manufacturing process by FEM [J]. Applied Mathematical Modeling, 2009, 33(1): 34-53.

王云. 棒材二辊矫直过程及关键技术研究 [D]. 秦皇岛: 燕山大学, 2013.

刘鸿文. 材料力学 [M]. 北京: 高等教育出版社, 2009: 139.

何挺. 微小型薄壁铜管矫直工艺研究及设备开发 [D]. 广州: 华南理工大学, 2012: 7.

俞汉清, 陈金德. 金属塑性成形原理 [M]. 北京: 机械工业出版社, 1999: 121-122.

JOHNSON K L. 接触力学 [M]. 徐秉业, 罗学富, 译. 北京: 高等教育出版社, 1992: 51-58.

余同希, 章亮炽. 塑性弯曲理论及其应用 [M]. 北京: 科学出版社, 1992: 43-44.

崔甫. 矫直原理与矫直机械 [M]. 北京: 冶金工业出版社, 2007: 7.

马斯基列逊A M. 管材矫直机 [M]. 西安重型机械研究所一室, 译. 北京: 机械工业出版社, 1979: 104-109.

崔甫. 矫直技术与理论的新探索 [M]. 北京: 冶金工业出版社, 2010: 99.

程晓宇, 王晓梅. 残余应力及其本质探讨 [J]. 山西国防工业职业技术学院学报, 2008, 18(4): 33-35.

CHENG Xiaoyu, WANG Xiaomei. Explore residual stress and its essence [J]. Journal of Shanxi Institute of Technology, 2008, 18(4): 33-35.

马碧涛. 残余应力对压痕实验中压力-压痕深度曲线的影响 [D]. 哈尔滨: 哈尔滨工业大学, 2007.

侯海量, 朱锡, 刘润泉. 爆炸消除921A钢焊接残余应力试验 [J]. 焊接学报, 2004, 25(1): 119-123.HOU Hailiang, ZHU Xi, LIU Runquan. Welding residual stress relieving of steel 921A of using explosive method [J]. Transactions of the China Welding Institution, 2004, 25(1): 119-123.

蒋刚, 何闻, 郑建毅. 高频振动时效的机理与实验研究 [J]. 浙江大学学报: 工学版, 2009, 43(7): 1269-1272.

JIANG Gang, HE Wen, ZHENG Jianyi. Mechanism and experimental research on high frequency vibratory stress relief [J]. Journal of Zhejiang University: Engineering Science, 2009, 43(7): 1269-1272.

郑建毅. 电脉冲法消除残余应力的理论及关键技术研究 [D]. 杭州: 浙江大学, 2011.

WU B J, CHAN T C, LEE T C, et al. A study on the precision modeling of the bars produced in two cross-roll straightening [J]. Mater Process Tech, 2000, 99: 202-206.

陈磊. 管材二辊矫直过程有限元分析 [D]. 秦皇岛: 燕山大学, 2010.

刘勇. 二辊矫直工艺及关键技术研究 [D]. 太原: 太原科技大学, 2011.

王云, 刘才, 马立东, 等. 棒材二辊矫直过程中的辊缝工艺参数 [J]. 钢铁, 2012, 47(9): 50-52, 73.

WANG Yun, LIU Cai, MA Lidong, et al. Study of gap between rolls during two-roll straightening process [J]. Iron and Steel, 2012, 47(9): 50-52, 73.

MUTRUX A, BERISHA B, HOCHHOLDINGER B, et al. Numerical modelling of cross roll straightening [C]∥Proceedings of the 7th LS-DYNA Anwenderforum, Bamberg 2008. Stuttgart, Germany: DYNAmore GmbH, 2008: C-I-(33-40).

闫长林. Φ8-32 mm棒材矫直机结构参数及工艺参数研究 [D]. 沈阳: 东北大学, 2010.

李艳辉. 斜辊钢管矫直过程数值模拟及残余应力的研究 [D]. 鞍山: 辽宁科技大学, 2008.

李树珍. 棒材矫直变形过程的有限元数值模拟 [D]. 秦皇岛: 燕山大学, 2006.

刘勇, 双远华, 王仕杰, 等. 基于ANSYS/LS-DYNA的二辊矫直过程数值模拟 [J]. 太原科技大学学报, 2011, 32(2): 111-116.

LIU Yong, SHUANG Yuanhua, WANG Shijie, et al. Numerical simulation on two-roll straightener based on ANSYS/LS-DYNA [J]. Journal of Taiyuan University of Science and Technology, 2011, 32(2): 111-116.

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⁰

Design Method of Roller Shape for Bar Two-Roll Straightener Based on Plastic 5εt and Neutral Layer Offset

DOI：10.7652/xjtuxb201507013

摘要

Abstract

关键词

Keywords

references

Design Method of Roller Shape for Bar Two-Roll Straightener Based on Plastic 5ε_t and Neutral Layer Offset