无缝钢管张力减径过程管壁增厚规律研究
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摘要
根据无缝钢管张力减径过程的变形特点,利用MSC.Marc软件建立了三维热力耦合有限元分析模型,对25机架张力减径机试轧产品进行数值模拟,不同机架间距的模拟结果表明利用软件建立的缩微分析模型建模准确,试验进一步验证了模型的可靠性。通过研究管端张力及轧辊工作直径的变化,了解了管端增厚机理。探讨了多种因素对张力的影响,分析了张力形成规律,研究结果对今后管端壁厚控制技术的开发提供了依据。
According to the deformation characteristics of the seamless steel tube during the stretch-reducing process, a three-dimensional thermo-mechanical coupled finite element analysis model is built up with the MSC.Marc software for numerical simulation of the trial pipe-rolling process of the 25-stand stretch-reducing mill. The results of simulations with different stand spaces indicate that the micro analysis model as set up with the said software is accurate,and its reliability is further verified via relevant testing. And thanks to studying the changes of tube end tension and the working diameter of the roll,the thickening mechanism of the tube end is identified. Furthermore the influence by various factors on the tension is discussed, and the law of tension formation analyzed. The research results provide a basis for future developing the technology for control of tube end wall thickness.
According to the deformation characteristics of the seamless steel tube during the stretch-reducing process, a three-dimensional thermo-mechanical coupled finite element analysis model is built up with the MSC.Marc software for numerical simulation of the trial pipe-rolling process of the 25-stand stretch-reducing mill. The results of simulations with different stand spaces indicate that the micro analysis model as set up with the said software is accurate,and its reliability is further verified via relevant testing. And thanks to studying the changes of tube end tension and the working diameter of the roll,the thickening mechanism of the tube end is identified. Furthermore the influence by various factors on the tension is discussed, and the law of tension formation analyzed. The research results provide a basis for future developing the technology for control of tube end wall thickness.
引文
[1]龚尧,周国盈.现代钢铁工业技术连轧钢管[M].北京:冶金工业出版社,1992.
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[3] Yu Hui, Chen Yong, Bai Xiangzhong. Finite element analysis for wall thickness variation of seamless tube in stretch reducing rolling process[J]. Advanced Materials Reasearch,2011,291-294:532-536.
[4]霍晓栋,赵春江,白磊,等.张力系数对钢张力减径管壁厚度参数的影响研究[J].锻压技术,2016,45(11):120-124.
[5]李金锁,吕庆功.无缝钢管张力减径张力系数的理论计算与分析[J].钢管,2015,44(3):40-43.
[6]白磊,安俊静,杨士侠,等.基于ANSYS/LS-DYNA的焊管张力减径数值模拟[J].机械工程与自动化,2014(3):5-7.
[7]薛丽华,高明,李佳瑞.热轧无缝方管微张力定减径工艺研究[J].包钢科技,2014,40(4):19-22.
[8]石建辉,赵春江,江连运,等. 21机架张力减径机椭圆孔型的有限元分析[J].钢管,2012,41(4):18-22.
[9]罗大春,杜涛,白磊.无缝钢管张力减径三维热力耦合分析[J].太原科技大学学报,2013,34(5):368-371.
[10]王琦,张芳萍,申陵帆,等.采用CEC方法降低管端增厚的有限元模拟[J].现代制造工程,2016(6):90-93.
[11]于辉,李学通,杜凤山.无缝钢管张力减径过程多场顺序耦合有限元分析[J].工程力学,2010,27(10):196-201.
[12]陈今良,白磊,王军,等.单机架减径率对无缝钢管周向壁厚影响的研究[J].钢管,2015,44(1):33-37.
[13]于辉,汪飞雪,刘利刚.张力减径过程管端增厚的CEC控制模型[J].燕山大学学报,2013,37(3):223-227,233.
[14]王军,双远华,周研,等.流函数法在无缝钢管张力减径过程中的应用[J].塑性工程学报,2017,24(3):214-218.
[15]汪飞雪,杜凤山,于辉,等.应用上限法计算三辊连轧管轧制过程中的轧制力矩[J].工程力学,2013,30(5):259-264.
[2]于辉,臧新良,杜凤山,等.无缝钢管张力减径过程内六方产生的模拟分析[J].钢铁,2008,43(3):53-56,60.
[3] Yu Hui, Chen Yong, Bai Xiangzhong. Finite element analysis for wall thickness variation of seamless tube in stretch reducing rolling process[J]. Advanced Materials Reasearch,2011,291-294:532-536.
[4]霍晓栋,赵春江,白磊,等.张力系数对钢张力减径管壁厚度参数的影响研究[J].锻压技术,2016,45(11):120-124.
[5]李金锁,吕庆功.无缝钢管张力减径张力系数的理论计算与分析[J].钢管,2015,44(3):40-43.
[6]白磊,安俊静,杨士侠,等.基于ANSYS/LS-DYNA的焊管张力减径数值模拟[J].机械工程与自动化,2014(3):5-7.
[7]薛丽华,高明,李佳瑞.热轧无缝方管微张力定减径工艺研究[J].包钢科技,2014,40(4):19-22.
[8]石建辉,赵春江,江连运,等. 21机架张力减径机椭圆孔型的有限元分析[J].钢管,2012,41(4):18-22.
[9]罗大春,杜涛,白磊.无缝钢管张力减径三维热力耦合分析[J].太原科技大学学报,2013,34(5):368-371.
[10]王琦,张芳萍,申陵帆,等.采用CEC方法降低管端增厚的有限元模拟[J].现代制造工程,2016(6):90-93.
[11]于辉,李学通,杜凤山.无缝钢管张力减径过程多场顺序耦合有限元分析[J].工程力学,2010,27(10):196-201.
[12]陈今良,白磊,王军,等.单机架减径率对无缝钢管周向壁厚影响的研究[J].钢管,2015,44(1):33-37.
[13]于辉,汪飞雪,刘利刚.张力减径过程管端增厚的CEC控制模型[J].燕山大学学报,2013,37(3):223-227,233.
[14]王军,双远华,周研,等.流函数法在无缝钢管张力减径过程中的应用[J].塑性工程学报,2017,24(3):214-218.
[15]汪飞雪,杜凤山,于辉,等.应用上限法计算三辊连轧管轧制过程中的轧制力矩[J].工程力学,2013,30(5):259-264.