高频焊薄壁管成型仿真与分析  

Simulation and Analysis on Shape Forming of High-frequency Welding Thin-wall Pipe

作　　者：蔡绪明 Cai Xuming(Shashi Steel Pipe Company,Sinopec Oilfield Equipment Corporation)

机构地区：[1]中石化石油工程机械有限公司沙市钢管分公司

出　　处：《石油机械》2023年第6期151-158,共8页China Petroleum Machinery

基　　金：中国石油化工股份有限公司科研项目“纯氢长输管道安全输送关键技术研究”(122072)。

摘　　要：钢带边缘波浪是影响高频焊薄壁管质量的关键因素,为了有效地控制边缘波浪,通常做法是钢管试制来确定合适的成型工艺,既耽误生产进度,又浪费材料。通过对φ219.1、φ406.4和φ610.0 mm规格高频焊管的成型过程建模,仿真分析了薄钢带在整个成型过程的等效应力和最大塑性变形,发现钢带边缘波浪主要出现在粗成型段过弯边辊区域。对弯边辊至2#辊组的钢带边缘的径向位移进行线性拟合分析,得到了钢带边缘波浪的发生趋势随着下山量和弯边辊下移量等参数的变化规律。通过工艺参数匹配的成型仿真计算,确定的成型工艺参数匹配直接用于L245Mφ406.4 mm×6.0 mm高频焊管的批量生产,节省了钢管试制时间,且综合材耗下降了2%,取得了良好的经济效益。Steel strip edge wave is a critical factor affecting the quality of high-frequency welding(HFW)thin-wall pipe.In order to effectively control the edge wave,trial pipe production is often performed to determine an appropriate shape-forming process.It not only delays the production schedule,but also wastes materials.In this study,the shape-forming processes of 219.1 mm,406.4 mm and 610.0 mm HFW pipes were modelled to simulate and analyze the equivalent stress and maximum plastic deformation of thin steel strips in the whole shape-forming process.It is found that strip edge waves mainly occur when passing an edge-bending roller in the rough shape-forming stage.The occurrence trends of steel strip edge waves with the changes in the parameters such as downhill amount and edge-bending roller lowering were clarified through linear fitting analysis of the radial displacement of the strip edge from the edge-bending roller to the 2#roller set.The shape-forming process parameters determined through the simulation calculation were directly used for batch production of L245M 406.4 mm×6.0 mm HFW pipes,which saves time for trial production and leads to a drop of the comprehensive material consumption by 2%,suggesting considerable economic benefits.

关 键 词：油气管道 薄壁管 高频焊管 成型仿真 边缘波浪 

分 类 号：TE[石油与天然气工程]