国产SA516Gr.70(HIC)厚板容器筒节的成型技术

Forming technology of cylinder of domestic SA516Gr.70(HIC)thick-plate vessels

为研究应用于加氢装置的冷高压分离器等核心设备的国产SA516Gr.70(HIC)、厚度200 mm钢板的可焊性能和成型性能,对钢板化学成分、力学性能、硬度等进行分析,选用400℃时的屈服强度平均值进行筒节板料预弯受力计算,追踪580℃中温卷校成型工艺及筒节纵缝试板的化学成分、力学性能等。试验结果表明,国产SA516Gr.70(HIC)厚板在不同位置及方向各项力学性能均衡;中温校圆后筒节最大圆度4 mm、棱角度2 mm,成型尺寸合格;纵缝试板的力学性能满足技术文件要求。研究验证了国产SA516Gr.70(HIC)、厚度200 mm钢板的可焊性能和成型性能良好,其厚板容器筒节的成型技术达到国内较高的工艺水平。

The domestically produced SA516Gr.70(HIC),200 mm thick steel plate has excellent resistance to wet hydrogen sulfide stress corrosion.It is used in core equipment such as cold and high-pressure separators in hydrogenation units.To study its weldability and formability,the chemical composition,mechanical properties,hardness,etc.of the steel plate were analyzed and pre-bent stress calculation of the cylinder section plate material was done using 400℃yield strength average value.The 580℃medium temperature rolling and forming process,as well as chemical composition,mechanical properties,etc.of the longitudinal seam test plate of the cylinder section,were tracked.The experimental results show that the mechanical properties of the domestically produced SA516Gr.70(HIC)thick plates are balanced in different positions and directions;The maximum roundness and edge angle of the cylinder section after medium temperature calibration are 4 mm and 2 mm,and the forming size is qualified;The mechanical properties of the longitudinal seam test plate meet the requirements of the technical documents.This research project verified the good weldability and formability of the domestically produced SA516Gr.70(HIC),200 mm thick steel plate,and verified that forming technology of thick plate vessel sections has reached a relatively high level of domestic technology.