目的 研究WP720超级耐候钢热连轧过程中的温度和变形分布规律,为优化超级耐候钢热连轧工艺提供理论指导。方法 建立基于热力耦合的WP720超级耐候钢热连轧有限元模型,对多道次轧制过程进行数值模拟,分析轧制过程中的温度和等效应变分布规律。结果 有限元模拟结果表明,轧板的表面温度变化剧烈,内部温度变化相对缓慢。温度分布表现为轧件表面温度先降低后升高,而轧件内部温度则呈现先升高后降低的趋势;轧件表面沿宽度方向的温度分布表现为中部高、边部低的规律,终轧温度中部与边部相差30 ℃。由于受到轧板与轧辊接触区域摩擦力的作用,因此塑性变形集中在轧件表面区域,随道次的增加逐渐向内部延伸,但最大值仍在表面。表面等效应变最终稳定在4.07,内部等效应变最终稳定在3.11。结论 在轧制过程中,轧件表面与心部的温度变化呈现显著差异,但总体呈现下降趋势。沿轧板宽度方向,中心温度高于边部温度。随着轧制道次的增加,轧件的等效塑性应变明显提高,尤其接触区域的塑性变形累积更为显著。
Abstract
The work aims to study the temperature and deformation distribution during the hot continuous rolling process of WP720 super weathering resistant steel, to provide theoretical guidance for optimizing the hot continuous rolling process of super weathering resistant steel. A thermo-mechanical coupled finite element model for the hot continuous rolling process of WP720 super weathering resistant steel was established. The multi-pass rolling process was numerically simulated, and the distribution characteristics of temperature and effective strain during the rolling process were analyzed. The finite element simulation results showed that the temperature of the surface changed drastically, while the internal temperature changed relatively slowly. The surface temperature of the rolled plate first decreased and then increased; the internal temperature of the rolled plate first increased and then decreased. The temperature distribution along the width of the rolled plate was high value at the center and low at the edge. The final rolling temperature differed by 30 ℃ between the center and the edge. Due to the frictional effect in the contact area between the rolling plate and the rolling mill, the plastic strain concentrated on the surface region of the rolled plate, and gradually expanded toward the interior as the number of passes increased, and the surface still maintained the maximum value. The surface plastic strain eventually stabilized at 4.07, while the internal plastic strain stabilized at 3.11. During the rolling process, the temperature difference between the surface and the core of the rolled plate is significant, but there is an overall decreasing trend. In the direction of the plate width, the temperature at the center is higher than that at the edges. The equivalent plastic strain of the rolled plate accumulates significantly with each pass, especially with more pronounced strain accumulation in the contact region.
关键词
超级耐候钢 /
热连轧 /
有限元 /
数值模拟 /
温度场
Key words
super weathering resistant steel /
hot continuous rolling /
finite element /
numerical simulation /
temperature field
{{custom_sec.title}}
{{custom_sec.title}}
{{custom_sec.content}}
参考文献
[1] LI X R, JI W, HE J N.Study on the Initial Corrosion Characteristics of Weathering Steel Bridges with Corrugated Steel Webs[J]. Construction and Building Materials, 2024, 449: 138402.
[2] ZHANG Y, ZHENG K F, ZHU J, et al.Research on Corrosion and Fatigue Performance of Weathering Steel and High-Performance Steel for Bridges[J]. Construction and Building Materials, 2021, 289: 123108.
[3] GLASSMAN J D, GOMEZ A, GARLOCK M E M, et al. Mechanical Properties of Weathering Steels at Elevated Temperatures[J]. Journal of Constructional Steel Research, 2020, 168: 105996.
[4] 刘文胜, 张可, 徐党委, 等. 终轧温度对低屈强比桥梁耐候钢组织及力学性能的影响[J]. 过程工程学报, 2024, 24(4): 462-469.
LIU W S, ZHANG K, XU D W, et al.Effect of Finish Rolling Temperature on Microstructure and Mechanical Properties of Bridge Weathering Steel with Low Yield Ratio[J]. The Chinese Journal of Process Engineering, 2024, 24(4): 462-469.
[5] SONG L Y, GAO X H, XUE Q H, et al.Effect of Cooling Rate and Coiling Temperature on Microstructure and Precipitation Behavior of a 700 MPa Weathering Steel[J]. Journal of Materials Engineering and Performance, 2022, 31(12): 10225-10236.
[6] BAI S B, LI D Z, LI L R, et al.Realizing the Strength-Ductility Balance of a Warm-Rolled 10 Mn Steel via Preparing Dual Nano-Sized Precipitates[J]. Journal of Materials Research and Technology, 2024, 32: 3210-3222.
[7] WU H Y, DU L X, LIU X H.Dynamic Recrystallization and Precipitation Behavior of Mn-Cu-V Weathering Steel[J]. Journal of Materials Science & Technology, 2011, 27(12): 1131-1138.
[8] WANG R, LI F H, YU Z Q, et al.Influences of Partial Substitution of C by N on the Microstructure and Mechanical Properties of 9Cr18Mo Martensitic Stainless Steel[J]. Materials & Design, 2023, 236: 112497.
[9] SU Z X, SUN C Y, WANG M J, et al.Modeling of Microstructure Evolution of AZ80 Magnesium Alloy during Hot Working Process Using a Unified Internal State Variable Method[J]. Journal of Magnesium and Alloys, 2022, 10(1): 281-294.
[10] SHAHANI A R, SETAYESHI S, NODAMAIE S A, et al.Prediction of Influence Parameters on the Hot Rolling Process Using Finite Element Method and Neural Network[J]. Journal of Materials Processing Technology, 2009, 209(4): 1920-1935.
[11] YUAN S Y, ZHANG L W, LIAO S L, et al.Simulation of Deformation and Temperature in Multi-Pass Continuous Rolling by Three-Dimensional FEM[J]. Journal of Materials Processing Technology, 2009, 209(6): 2760-2766.
[12] 周家林, 彭成武, 彭世丹, 等. 热连轧带钢立-平辊多道次轧制热力耦合三维有限元模拟[J]. 上海金属, 2018, 40(1): 76-82.
ZHOU J L, PENG C W, PENG S D, et al.Thermo-Mechanical Coupled Three Dimensional FEM Simulation on Continuous Multi-Pass V-H Hot Strip Rolling Process[J]. Shanghai Metals, 2018, 40(1): 76-82.
[13] SUN P, YANG H F, HUANG R S, et al.The Effect of Rolling Temperature on the Microstructure and Properties of Multi Pass Rolled 7A04 Aluminum Alloy[J]. Journal of Materials Research and Technology, 2023, 25: 3200-3211.
[14] ZENG B, WU J, ZHANG H H.Numerical Simulation of Multi-Pass Rolling Force and Temperature Field of Plate Steel during Hot Rolling[J]. Journal of Shanghai Jiaotong University (Science), 2011, 16(2): 141-144.
[15] LI L J, XIE H B, LIU T W, et al.Influence Mechanism of Rolling Force on Strip Shape during Tandem Hot Rolling Using a Novel 3D Multi-Stand Coupled Thermo-Mechanical FE Model[J]. Journal of Manufacturing Processes, 2022, 81: 505-521.
[16] ZHANG J L, CUI Z S.Continuous FEM Simulation of Multi-Pass Plate Hot Rolling Suitable for Plate Shape Analysis[J]. Journal of Central South University of Technology, 2011, 18(1): 16-22.
[17] 饶永鹏, 蒋际循, 秦芳诚, 等. HB400/HG70双金属工程机械钢热轧结合行为模拟研究[J]. 精密成形工程, 2024, 16(11): 91-99.
RAO Y P, JIANG J X, QIN F C, et al.Simulation Research on Hot Rolling Behavior of HB400/HG70 Bimetallic Machinery Steel[J]. Journal of Netshape Forming Engineering, 2024, 16(11): 91-99.
[18] 杨哲懿, 何士国, 孟凡志, 等. 热轧滑动中性面的影响因素及有限元分析[J]. 鞍钢技术, 2024(6): 91-97.
YANG Z Y, HE S G, MENG F Z, et al.Influencing Factors and Finite Element Analysis of Sliding Neutral Surface in Hot Rolling[J]. Angang Technology, 2024(6): 91-97.
[19] 唐广波, 刘正东, 康永林, 等. 热轧带钢传热模拟及变形区换热系数的确定[J]. 钢铁, 2006, 41(5): 36-40.
TANG G B, LIU Z D, KANG Y L, et al.Simulation of Thermal Evolution of Strip and Determination of Heat Transfer Coefficient in Deformation Zone during Hot Rolling[J]. Iron and Steel, 2006, 41(5): 36-40.
[20] ZHAO X L, CHEN L, HE K Z, et al.Effect of Contact Heat Transfer on Hot Rolling of Aluminum Alloy[J]. Procedia Manufacturing, 2019, 37: 91-96.
[21] WANG J P, CHANG J Z, ZHANG M H, et al.Analysis of Fatigue Damage of Hot Rolling Work Rolls Coupled with Wear Effect[J]. Journal of Manufacturing Processes, 2024, 131: 1423-1436.
[22] KOTRBACEK P, RAUDENSKY M, HORSKY J, et al.Experimental Study of Heat Transfer in Hot Rolling[J]. Revue de Métallurgie, 2006, 103(7/8): 333-341.
[23] 郭志强, 杨杰, 任学平. 轧制参数对板带热轧温度分布的影响[J]. 特殊钢, 2019, 40(5): 1-6.
GUO Z Q, YANG J, REN X P.Effects of Rolling Parameters on Temperature Distribution in the Hot Rolling of Strips[J]. Special Steel, 2019, 40(5): 1-6.
[24] 闫松涛, 杨斌, 江海涛. 基于ABAQUS二次开发的6016铝合金热连轧过程有限元分析[J]. 塑性工程学报, 2024, 31(6): 87-94.
YAN S T, YANG B, JIANG H T.Finite Element Analysis of Hot Continuous Rolling Process of 6016 Aluminum Alloy Based on Secondary Development of ABAQUS[J]. Journal of Plasticity Engineering, 2024, 31(6): 87-94.
[25] PATIL BASAVARAJ V, CHAKKINGAL U, PRASANNA KUMAR T S. Study of Channel Angle Influence on Material Flow and Strain Inhomogeneity in Equal Channel Angular Pressing Using 3D Finite Element Simulation[J]. Journal of Materials Processing Technology, 2009, 209(1): 89-95.
[26] 吴泽华, 王克鲁, 邓偲瀛, 等. Zr-1.0Sn-1.0Nb-0.1Fe合金板材多道次热轧过程的有限元分析[J]. 锻压技术, 2022, 47(6): 132-140.
WU Z H, WANG K L, DENG S Y, et al.Finite Element Analysis on Multi-Pass Hot Rolling Process for Zr-1.0Sn-1.0Nb-0.1Fe Alloy Sheet[J]. Forging & Stamping Technology, 2022, 47(6): 132-140.
[27] 王田, 南迎飞, 王伟, 等. Ti-811合金棒材热连轧过程有限元数值模拟及验证[J]. 钛工业进展, 2023, 40(4): 26-34.
WANG T, NAN Y F, WANG W, et al.Finite Element Numerical Simulation and Verification of Hot Continuous Rolling Process of Ti-811 Alloy Bar[J]. Titanium Industry Progress, 2023, 40(4): 26-34.
基金
山西省基础研究计划（202303021212181,202403021221129）; 山西省重点研发计划（202302050201015）
PDF(2041 KB)
渝公网安备 50010702501719号 渝ICP备15012534号-4
