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大直径直缝焊管线管必须满足日益增长的技术要求,保证在施工和维护过程中最佳的工作性能。可以预见在不远的将来,为满足欧洲、北美洲、南美洲、亚洲等国家日益增长的天然气需求,必须开发成本合理的输送方式来经济地开采偏远地区的气田。采用高压天然气输送管线将天然气输送到市场是最理想的选择,特别是对于长距离的天然气运输,高钢级(X80,X100或者更高钢级)、大直径(外径36~56 in)天然气输送管线证明是非常具有吸引力和经济实惠的。关于埋弧焊管,焦点主要是集中在焊接耗材和成型工具上,特别是成型工具,其设计必须要可以应对高钢级钢板,比如X100级钢管用钢板从U成型过渡到O成型时的弹复效应。本研究通过数学建模,评价X100级钢管在利用TenarisConfab轧机进行UO成型的过程,从而获得最佳参数。利用有限元模型对X100级钢管生产过程进行了分析,以评估成型模具几何形状的拟合性和制管机组制造高钢级钢管的制造能力。
Large diameter straight seam welded line pipe must meet the growing technical requirements to ensure the best performance during construction and maintenance. It is foreseeable that in the near future, in order to meet the growing demand for natural gas in countries such as Europe, North America, South America and Asia, it is necessary to develop cost-effective transportation methods to economically mine gas fields in remote areas. The use of high-pressure natural gas pipelines to deliver natural gas to markets is ideal, especially for long-distance natural gas transportation, with high grade steel grades X80, X100 or higher, large diameter (36 to 56 in OD) Pipelines prove to be very attractive and affordable. About submerged arc welding pipe, the focus is mainly on welding consumables and forming tools, especially forming tools, the design must be able to cope with high-grade steel plate, such as X100 grade steel plate from the U-shaped transition to the O forming rebound effect. In this study, through mathematical modeling, we evaluate the process of XO grade steel tube in UO forming with TenarisConfab rolling mill to get the best parameters. The finite element model was used to analyze the production process of X100 grade steel pipe in order to evaluate the fit of the geometry of the forming die and the manufacturing ability of the pipe making unit for manufacturing high grade steel pipe.