详细介绍了准508 mm HFW直缝焊管排辊成型机组轧制力的测试方法。采用电阻应变式传感器测量法,测试了递送机架、预成型机架和精成型机架的轧制力以及排辊成型段管坯对排辊的作用力。通过试验分析了HFW焊管成型过程中轧制力的分布状态以...详细介绍了准508 mm HFW直缝焊管排辊成型机组轧制力的测试方法。采用电阻应变式传感器测量法,测试了递送机架、预成型机架和精成型机架的轧制力以及排辊成型段管坯对排辊的作用力。通过试验分析了HFW焊管成型过程中轧制力的分布状态以及对成型性能的影响,从而合理调整轧制工艺参数(轧辊压下量的调整、排辊的位置和角度的调整、下山量的调整等),使得整个成型过程的力能分布比较合理,保证了轧制过程顺利进行,并为后续的理论研究提供了技术支撑。展开更多
The roll forming process is applied to the manufacturing of high frequency welded (HFW) pipes,section steels,etc. In this paper,the roll forming process of the HFW pipe is simulated with the finite element method (FEM...The roll forming process is applied to the manufacturing of high frequency welded (HFW) pipes,section steels,etc. In this paper,the roll forming process of the HFW pipe is simulated with the finite element method (FEM). A user-defined material routine of the commercial finite element code ABAQUS/Explicit is developed,and the mixed hardening constitution model is realized through the user-defined material routine. Based on the mixed hardening constitutive equation,the numerical simulation of roll forming process of HFW pipe is performed. The evolutions of equivalent stress and strain are analyzed,and the calculated results are also compared between different hardening models. The results show that the different material hardening models have some important effects on the variation of equivalent stress and strain of strip steel during the simulation of the roll forming process.展开更多
HFW(high frequency welding)焊管的排辊成型过程主要受材料、成型设计、工艺设计方面因素的影响。实际生产中需要知道各影响因素对产品成型质量的影响,为生产工艺的制定提供理论上的参数定性、定量选择依据。基于508 mm直缝焊管的排...HFW(high frequency welding)焊管的排辊成型过程主要受材料、成型设计、工艺设计方面因素的影响。实际生产中需要知道各影响因素对产品成型质量的影响,为生产工艺的制定提供理论上的参数定性、定量选择依据。基于508 mm直缝焊管的排辊成型过程,利用有限元分析软件ABAQUS仿真,将带钢的成型形状、边部纵向应变曲线、边部PEEQ(等效塑性应变)曲线作为评价指标,探讨了成型速度、摩擦状态对管坯成型效果的影响。结果表明,在正常取值下,速度和摩擦状态对成型形状无较大影响,速度对边部纵向应变以及边部PEEQ影响较大,摩擦因数对边部纵向应变影响较大,对边部PEEQ基本无影响。展开更多
文摘详细介绍了准508 mm HFW直缝焊管排辊成型机组轧制力的测试方法。采用电阻应变式传感器测量法,测试了递送机架、预成型机架和精成型机架的轧制力以及排辊成型段管坯对排辊的作用力。通过试验分析了HFW焊管成型过程中轧制力的分布状态以及对成型性能的影响,从而合理调整轧制工艺参数(轧辊压下量的调整、排辊的位置和角度的调整、下山量的调整等),使得整个成型过程的力能分布比较合理,保证了轧制过程顺利进行,并为后续的理论研究提供了技术支撑。
基金the National Natural Science Foundation of China (No. 50375095)
文摘The roll forming process is applied to the manufacturing of high frequency welded (HFW) pipes,section steels,etc. In this paper,the roll forming process of the HFW pipe is simulated with the finite element method (FEM). A user-defined material routine of the commercial finite element code ABAQUS/Explicit is developed,and the mixed hardening constitution model is realized through the user-defined material routine. Based on the mixed hardening constitutive equation,the numerical simulation of roll forming process of HFW pipe is performed. The evolutions of equivalent stress and strain are analyzed,and the calculated results are also compared between different hardening models. The results show that the different material hardening models have some important effects on the variation of equivalent stress and strain of strip steel during the simulation of the roll forming process.
文摘HFW(high frequency welding)焊管的排辊成型过程主要受材料、成型设计、工艺设计方面因素的影响。实际生产中需要知道各影响因素对产品成型质量的影响,为生产工艺的制定提供理论上的参数定性、定量选择依据。基于508 mm直缝焊管的排辊成型过程,利用有限元分析软件ABAQUS仿真,将带钢的成型形状、边部纵向应变曲线、边部PEEQ(等效塑性应变)曲线作为评价指标,探讨了成型速度、摩擦状态对管坯成型效果的影响。结果表明,在正常取值下,速度和摩擦状态对成型形状无较大影响,速度对边部纵向应变以及边部PEEQ影响较大,摩擦因数对边部纵向应变影响较大,对边部PEEQ基本无影响。
