20CrMn钢双辊薄带振动铸轧细晶机理试验

doi:10.3901/JME.2019.04.054

机械工程学报 ›› 2019, Vol. 55 ›› Issue (4): 54-59.doi: 10.3901/JME.2019.04.054

20CrMn钢双辊薄带振动铸轧细晶机理试验

孙明翰, 杨玉青, 朱志旺, 魏洁平, 杜凤山

燕山大学国家冷轧板带装备及工艺工程技术研究中心秦皇岛 066004

收稿日期:2018-07-14 修回日期:2018-09-10 出版日期:2019-02-20 发布日期:2019-02-20
通讯作者: 杜凤山(通信作者),男,1960年出生,博士,教授,博士研究生导师。主要研究方向为板带、钢管热连轧、大型零件成形、振动铸轧等。E-mail:fsdu@ysu.edu.cn
作者简介:孙明翰,男,1991年出生,博士研究生。主要研究方向为振动铸轧与振动复合铸轧。E-mail:1050019267@qq.com
基金资助:
国家自然科学基金（U1604251）和河北省自然科学基金（E2017203043）资助项目

Experimental Study on Twin-roller Strip Cast-rolling under Vibration of 20CrMn Steel

SUN Minghan, YANG Yuqing, ZHU Zhiwang, WEI Jieping, DU Fengshan

National Engineering Research Center for Equipment and Technology of Cold Strip Rolling, Yanshan University, Qinhuangdao 066004

Received:2018-07-14 Revised:2018-09-10 Online:2019-02-20 Published:2019-02-20

摘要/Abstract

摘要： 为了改善传统双辊薄带铸轧板坯中存在的缩孔、裂纹、组织不均以及晶粒粗大等缺陷，提升双辊薄带铸轧产品带坯的力学性能，提出振动铸轧新技术，以细化铸轧带坯组织晶粒度，提高其力学性能。为了确定振动铸轧过程的细晶机理，分别在1 570℃和1 530℃两种开浇温度下进行20CrMn钢双辊薄带铸轧振动与非振动工况的对比试验，并对所得带坯微观组织及力学性能进行检测和分析。微观组织观察结果表明，在铸轧过程中振动可以有效细化产品带坯晶粒，其细晶机理为在凝固阶段振动可以提升熔池区形核率并促使振动侧枝晶尖端熔断，而在轧制阶段振动可以强化塑性变形区的动态再结晶；拉伸试验结果表明振动有效地改善了铸轧板坯的力学性能，开浇温度1 570℃时，沿轧制方向振动铸轧板坯较传统铸轧板坯屈服强度、抗拉强度和伸长率分别提高了12.11%、14.57%和38.9%，垂直轧制方向分别提高了7.72%、13.23%和34.8%；开浇温度1 530℃时，沿轧制方向分别提高了9.22%、14.95%和31.25%，垂直轧制方向分别提高了21.36%、27.35%和42.86%。试验表明振动铸轧较传统铸轧不仅能在凝固阶段通过振动提高形核率，细化晶粒，还能在轧制段通过振动增强动态再结晶效果，改善材料微观组织结构，从而提升其力学性能。

关键词: 晶粒细化, 力学性能, 再结晶, 振动, 铸轧

Abstract: In order to improve the comprehensive mechanical properties of the twin-roller cast-rolling strip, the concept of vibratory cast-rolling is proposed to refine the grain size of the strip. For the purpose of verifying the grain refinement effect of the vibratory cast-rolling technology and exploring its mechanism, twin-roller strip cast-rolling comparative experiments of 20CrMn steel under the condition of vibratory and non-vibration are carried out at two casting temperatures of 1 570℃ and 1 530℃respectively. Then the microstructure and mechanical properties of the strips obtained from the experiments are tested and analyzed. The microstructure observation result shows that the mechanical vibration can effectively refine the grain of the cast-rolling strip. The mechanism of grain refinement is that the vibration can promote the rupture of dendrite in the vibratory side so as to increase the nucleation rate in the molten pool in the solidification stage and can promote the dynamic recrystallization of the plastic deformation zone in the rolling stage. Tensile test result shows that mechanical vibration effectively improves the mechanical properties of the cast-rolling strip.At the casting temperature of 1 570℃, the yield strength, tensile strength and elongation of the vibratory cast-rolling strip are respectively 12.11%, 14.57%, 38.9% higher in the rolling direction and 7.72%, 13.23%, 34.8% higher in the vertical-rolling direction than that of the conventional cast-rolling strip.At the casting temperature of 1 530℃, the yield strength, tensile strength and elongation of the vibratory cast-rolling strip are respectively 9.22%, 14.95%, 31.25% higher in the rolling direction and 21.36%, 27.35%, 42.86% higher in the vertical-rolling direction than that of the conventional cast-rolling strip. The results show that vibration casting-rolling can not only increase nucleation rate and refine grain size in solidification stage, but also enhance dynamic recrystallization effect by vibration in rolling section, improve microstructure of material and enhance mechanical properties.

Key words: cast-rolling, grain refinement, mechanical property, recrystallization, vibration

中图分类号:

TF777

孙明翰, 杨玉青, 朱志旺, 魏洁平, 杜凤山. 20CrMn钢双辊薄带振动铸轧细晶机理试验[J]. 机械工程学报, 2019, 55(4): 54-59.

SUN Minghan, YANG Yuqing, ZHU Zhiwang, WEI Jieping, DU Fengshan. Experimental Study on Twin-roller Strip Cast-rolling under Vibration of 20CrMn Steel[J]. Journal of Mechanical Engineering, 2019, 55(4): 54-59.

参考文献

[1] STOLBCHENKO M,GRYDIN O,SCHAPER M. Twin-roll casting and finishing treatment of thin strips of the hardening aluminum alloy EN AW-6082 open access[J]. Steelmaking Conference Proceedings,Materials Today:Proceedings,2015,2(1):S32-S38.
[2] KIM J. Interfacial heat transfer of a single belt casting process[D]. Montréal:McGiU University,2000.
[3] DING P D,JIANG B,YANG C M,et al. Development and thought of thin strip continuous casting[J]. The Chinese Journal of Nonferrous Metals,2004,14(S1):192-196.
[4] 刘振宇,王国栋. 钢的薄带铸轧技术的最新进展及产业化方向[J]. 鞍钢技术,2008(5):1-8. LIU Zhenyu,WANG Guodong. The latest development of thin strip casting and rolling technology and industrialization direction[J]. Angang Technology,2008(5):1-8.
[5] 乐鹏,毛大恒,李建平,等. 电磁-超声能场对3003铝合金铸轧组织和性能的影响[J]. 中国有色金属学报,2014,24(3):615-623. LE Peng,MAO Daheng,LI Jianping,et al. Effect of electromagnetic-ultrasonic energy-field on structure and properties of roll-casting 3003 aluminum alloy strips[J]. Chinese Journal of Nonferrous Metals,2014,24(3):615-623.
[6] RAMIREZ A,MA Q,DAVIS B. Potency of high-intensity ultrasonic treatment for grain refinement of magnesium alloys[J]. Scripta Materialia,2008,9:19-22.
[7] NAKADA M,SHIOHARA Y,FLEMINGS M C. Modification of solidification structure by pulse electric discharging[J]. ISIJ International,1990,30(1):27-33.
[8] 杜凤山,许志强,路鹏程,等. 振动式双辊薄带铸轧机:中国,CN101181719[P]. 2008. DU Fengshan,XU Zhiqiang,LU Chengpeng,et al. Oscillatory type double roll strip casting mill:CN,CN 101181719 A[P]. 2008.
[9] GUAN R G,CAO F R,CHEN L Q C,et al. Dynamical solidification behaviors and microstructural evolution during vibrating wavelike sloping plate process[J]. Journal of Materials Processing Technology,2009,209(5):2592-2601.
[10] KOCATEPE K. Effect of low frequency vibration on porosity of LM25 and LM6 alloys[J]. Materials and Design,2007,28(6):1767-1775.
[11] FARSHID T,HASAN S,YOUSEFHK K.Study on the effect of prolonged mechanical vibration on the grain refinement and density of A356 aluminum alloy[J].Materials & Design,2009,30(5):1604-1611.
[12] ABOUTORABI A,ASSEMPOUR A,AFRASIAB H. Analytical approach for calculating the sheet output curvature in asymmetrical rolling:In the case of roll axis displacement as a new asymmetry factor[J]. International Journal of Mechanical Sciences,2016,105(1):11-22.
[13] ALI P,FRSHID A. Slab analysis of asymmetrical clad sheet bonded before rolling process[J]. International Journal of Advanced Manufacturing Technology,2016,65(7):1-14.
[14] ZHANG S H,ZHAO D W,GAO C R,et al. Analysis of asymmetrical sheet rolling by slab method[J]. International Journal of Mechanical Sciences,201265(10):168-176.
[15] PENG C,MAO D,HUANG M. Texture and property of thin roll casting aluminium sheets under high speed[J]. Mining & Metallurgical Engineering,2002,1(3):101-103.
[16] 库尔兹,费希尔,李建国,等. 凝固原理[M]. 北京:高等教育出版社,2010. KURTZ,FISHER,LI Jianguo,et al. Solidification principle[M]. Beijing:Higher Education Press,2010.

20CrMn钢双辊薄带振动铸轧细晶机理试验

Experimental Study on Twin-roller Strip Cast-rolling under Vibration of 20CrMn Steel

PDF

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 15

编辑推荐

Metrics

本文评价

[1]	张骞, 孟宪洪, 凌烈鹏, 高芒芒, 于梦阁. 重载铁路大跨度钢桁梁桥复合材料轨枕适应性[J]. 机械工程学报, 2019, 55(8): 145-153.
[2]	倪陈兵, 朱立达, 宁晋生, 杨志超, 刘长福. 超声振动辅助铣削钛合金铣削力信号及切屑特征研究[J]. 机械工程学报, 2019, 55(7): 207-216.
[3]	杨光, 胡志超, 张军, 皮钧, 刘中生. 超声振动改善电铸表面粗糙度的机理[J]. 机械工程学报, 2019, 55(7): 243-248.
[4]	高泽, 张德远, 李哲, 姜兴刚, 刘佳佳. 高速超声椭圆振动铣削腹板表面质量研究[J]. 机械工程学报, 2019, 55(7): 249-256.
[5]	于明润, 赵洪运, 蒋智华, 周利, 黄永宪, 宋晓国. 铝/黄铜异种金属搅拌摩擦焊搭接接头显微组织与力学性能[J]. 机械工程学报, 2019, 55(6): 39-45.
[6]	蒋建东, 章恩光, 赵颖娣, 李聪聪, 乔欣. 盾构刀盘振动掘削动力学建模与仿真研究[J]. 机械工程学报, 2019, 55(5): 113-120.
[7]	白有盾, 陈新, 杨志军. 考虑阻尼衰减的点位操作时间最优运动规划[J]. 机械工程学报, 2019, 55(5): 104-112.
[8]	杨建伟, 刘传, 王金海, 孙冉, 祝赫锴. 牵引与桥梁上拱激励下城轨列车动力学性能研究[J]. 机械工程学报, 2019, 55(4): 118-125.
[9]	汪久根, 柯梁亮. 基于残差网络的RV减速器故障诊断[J]. 机械工程学报, 2019, 55(3): 73-80.
[10]	王明杰. 一种模拟断路器负荷的装置设计与研究[J]. 电气工程学报, 2019, 14(2): 38-42.
[11]	柏朗, 李言, 杨明顺, 姚梓萌, 姚志远. 超声振动-单点增量复合成形过程中成形力的分析与建模[J]. 机械工程学报, 2019, 55(2): 42-50.
[12]	李瑞君, 常振鑫, 雷英俊, 胡鹏浩, 范光照. 基于DVD光学读取头的悬臂式低频加速度计[J]. 机械工程学报, 2019, 55(2): 10-17.
[13]	杨玉维, 李彬, 周海波, 赵新华, 宋阳, 刘凉, 赵磊. 计及非完美运动副的移动并联机械手动力学分析[J]. 机械工程学报, 2019, 55(15): 208-216.
[14]	余磊, 刘莉, 马志赛, 康杰. 基于多维振动响应GSC-TARMA模型的时变结构模态参数辨识[J]. 机械工程学报, 2019, 55(15): 183-192.
[15]	肖鑫, 汤宝平, 邓蕾, 黄艺. 机械振动无线传感器网络跨层同步采集累积误差控制方法[J]. 机械工程学报, 2019, 55(15): 202-207.