Abstract The application of induction bending processes to industrial pipe production is increasing. The induction bending process has the effect of reducing the number of inspections and preventing leaks by reducing the weld of the pipe. For these reasons, efforts have been made to apply an induction bending process to the pipe of the PGSFR under development in Korea and this is the first attempt in the SFR design. Since the PGSFR pipe has a relatively large diameter-to-thickness ratio, it is difficult to fabricate an induction bending pipe that meets the requirements. In addition, the material properties may change because the pipe heats to a very high temperature during the induction bending process. In this study, P91 pipes were fabricated by induction bending, and the results from analyzing the induction bending process’ applicability to the P91 pipe of the PGSFR are examined. The various dimensional measurements of the pipes fabricated by the induction bending process were surveyed to determine whether the requirements of the ASME Code were met. The minimum thickness, ovality, and wall buckling measured in the fabricated pipe met all the requirements. Tensile, impact, and hardness tests at various locations of the fabricated pipe also satisfied the requirements.

中文翻译：

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感应弯曲工艺对 PGSFR P91 管的适用性

摘要 感应弯曲工艺在工业管道生产中的应用越来越多。感应弯曲工艺通过减少管道的焊缝，具有减少检查次数和防止泄漏的效果。由于这些原因，已经努力将感应弯曲工艺应用于韩国正在开发的 PGSFR 管道，这是 SFR 设计的首次尝试。由于PGSFR管的径厚比比较大，很难制作出符合要求的感应弯管。此外，由于管道在感应弯曲过程中加热到非常高的温度，材料特性可能会发生变化。在这项研究中，P91 管是通过感应弯曲制造的，并检验了感应弯曲工艺对 PGSFR 的 P91 管的适用性的分析结果。对通过感应弯曲工艺制造的管道的各种尺寸测量进行了调查，以确定是否满足 ASME 规范的要求。所测量的装配管的最小厚度、椭圆度和壁屈曲满足所有要求。制成的管道在不同位置的拉伸、冲击和硬度测试也满足要求。