论文部分内容阅读
CFOE(continuous flexible o-shape expanding)机组采用连续的柔性成型,成型至O形后采用两步法焊接,即在线气体保护焊机预焊,离线埋弧焊接。采用先进的去除应力方式——整体水压扩径,没有盲区地去除残余应力。该机组的生产原料选用卷板,因为卷板的成本比开平板便宜10%左右,提高了产品市场竞争力。由于受卷板宽度的限制,目前机组适应管径最大为准711 mm,最大壁厚为25.4 mm,最高钢级为X80。
CFOE (continuous flexible o-shape expanding) unit uses continuous flexible forming, forming to O-shape after the use of two-step welding, that is, online gas shielded welding pre-welding, submerged arc welding. The use of advanced way to remove stress - the overall hydraulic expansion, there is no blind spot to remove residual stress. The production of raw materials used in the coil unit, because the cost of coil plate is about 10% cheaper than open, improve product market competitiveness. Due to the limited width of the coil, the maximum diameter of the current unit is 711 mm, the maximum wall thickness is 25.4 mm and the maximum steel grade is X80.