锻压技术

重轨BD2异形孔型可逆轧制过程的有限元模拟分析

英文标题：FEM simulation and analysis on reversible rolling process of asymmetric groove BD2 for heavy rail steel

分类号：

出版年,卷(期):页码：2015,40(10):142-148

摘要：

通过翻转和平移轧辊的方法来实现轧件翻钢和侧向推钢过程，并通过给轧件加载一个加速度来实现可逆轧制，在此基础上对60 kg·m-1的U71Mn钢重轨轧制BD2异形孔可逆轧制过程进行了三维热力耦合有限元模拟，分析了轧件在各道次轧件横断面等效应变分布、温度场变化以及轧制力数据。结果表明：轧件的中心存在一个较大的低变形区域，并且随着轧制进行被分隔成两个部分，最终在轨头以及轨底的中心位置形成两个低变形区域，这种变形规律不利于铸坯心部缺陷的修复，轧件内部最高温度出现在轧件心部到表面的中间位置。温度和及轧制力的实测值与模拟值吻合良好，验证了模型的有效性。

The steel tilting and lateral pushing process were achieved by turning over and moving the rollers respectively, and the reversible rolling was achieved by loading an acceleration to the workpiece. A coupled thermo-mechanical simulation was carried out on the reversible rolling process of asymmetric groove BD2 for heavy rail steel 60 kg·m-1, and the distribution of equivalent strain and temperature change and rolling force on the cross-sectional of the workpiece in each step were analyzed. The results show that there is a large area with low deformation at the center of rolled pieces, which is separated into two parts with the rolling process, and finally two lower deformation area at the center of the head and rail bottom are formed respectively. Above deformation regularities are harmful to repair the defect of billet core. Furtherly, the highest temperature appears in the middle between the center and the surface. The measured values of temperature and rolling force are in good agreement, and the effectiveness of this model is verified.

基金项目：

谭海林（1968-），男，硕士，副教授

参考文献：

[1]赖春明.60 kg·m-1重轨全道次轧制金属流动规律的有限元模拟[D].武汉：武汉科技大学，2014.

Lai C M.Finite Element Simulation of the Metal Flow during the Whole Rolling Process of 60 kg·m-1 Heavy Rail[D].Wuhan：Wuhan University of Science and Technology，2014.

[2]Sui Feng-li，Chen Qi-wei，Zhu Guo-hui，et al. Deformation uniformity of cold-rolled Q235 steel rebar by FEM in bending and rolling processes[J].Journal of Iron and Steel Research:International，2012，19(8)：37-42.

[3]Mahdi Bagheripoor，Hosein Bisadi.Effects of rolling parameters on temperature distribution in the hot rolling of aluminum strips[J].Applied Thermal Engineering，2011，31(10)，1556-1565.

[4]Siyu Yuan，Liwen Zhang，Shulun Liao，et al.Static and dynamic finite element analysis of 304 stainless steel rod and wire hot continuous rolling process[J].Jourmal of University of Science and Technology Beijing，2008，15(3)：324-329.

[5]胡盛德，吴晓冬，肖颐,等.HFW焊管排辊成形精成形段有限元仿真分析[J].锻压技术,2015,40(3):62-66.

Hu S D，Wu X D，Xiao Y，et al.Simulation analysis on fin-forming segment of cage roll-forming for HFW pipes[J].Forging & Stamping Technology, 2015,40(3):62-66.

[6]Sen-dong Gu，Li-wen Zhang，Chong-xiang Yue，et al.Multi-field coupled numerical simulation of microstructure evolution during the hot rolling process on GCr15 steel rod[J].Computational Materials Science，2011，50：1951-1957.

[7]马劲红，陶彬，姚晓晗, 等.H型钢轧制规程对端部舌形的影响[J].锻压技术,2014,39(8):37-41.

Ma J H，Tao B，Yao X H，et al.Effect of rolling scheme on the head tongue shape of H-beam[J].Forging & Stamping Technology, 2014,39(8):37-41.

[8]陈林，孙盛志.U75V重轨钢BD2开坯过程有限元数值模拟和分析[J].特殊钢，2012，33(3)：12-14.

Chen L，Sun S Z.Finite element numerical-simulation and analysis on BD2 blooming process of heavy rail steel U75V[J].Special Steel，2012，33(3)：12-14.

[9]李建超，麻永林，王宝峰,等.连铸坯轧重轨变形规律有限元模拟[J］.塑性工程学报，2005，12(6)：20-22.

Li J C，Ma Y L，Wang B F，et al.Simulation of deformation law of heavy rail rolled from bloom by FEM[J].Journal of Plasticity Engineering，2005，12(6)：20-22.

[10]宗伟，高密超，田仲良,等.重轨开坯轧制中金属质点流动的有限元模拟及分析[J].中国材料科技与设备，2008，(4)：72-74.

Zong W，Gao M C，Tian Z L，et al.Finite element simulation and analysis on metal flow of heavy rail blooming[J].Chinese Materials Science Technology & Equipment，2008，(4)：72-74.

[11]原思宇，丁宁，左岩，等. 钢轨轧制过程典型导卫系统的有限元模拟[J].塑性工程学报，2011，18(2):52-56.

Yuan S Y，Ding N，Zuo Y，et al.Study on the typical guide system of rail rolling process with FEM[J].Journal of Plasticity Engineering，2011，18(2)：52-56.

[12]周剑华.高速铁路重轨尺寸精度、平直度及残余应力控制的研究[D]沈阳：东北大学，2008.

Zhou J H.Sduty on Controlling of Dimensional Accuracy and Flatness and Residual Stress of Rail for High Speed Railway[D].Shenyang：Northeastern University，2008.

[13]郭煜敬.钢轨万能轧制孔型及轧制参数优化关键技术研究[D].重庆：重庆大学，2009.

Guo Y J.The Key Technology of Rolling Parameters Optimization During Universal Rolling Pass of [D].Chongqing：Chongqing University，2009.

服务与反馈：

【本网站尚未开通全文下载服务】【加入收藏】