摘要
CAP1000反应堆压力容器堆测接管管座采用低合金钢堆焊成型,堆焊是增材制造的最原始形态。在核电的压力容器设计上,采用堆焊结构作为结构的一个部件是不常见的。采用埋弧堆焊,从堆焊结构的三个方向——垂直于焊接方向、平行于焊接方向、堆焊结构的高度方向分别进行疲劳试验。试验结果表明,三个方向的疲劳性能基本相当。疲劳试验结果与ASME第Ⅲ卷附录Ⅰ提供的母材的疲劳曲线进行对比,三条试验曲线的数据点均位于ASME基准曲线的上方,因此采用ASME第Ⅲ卷附录Ⅰ提供的母材疲劳曲线进行堆焊管座的力学评定是合适的。
CAP1000 reactor pressure vessel quickloc instrumentation nozzle is a build-up low alloy steel structure by SAW,and buildup is considered as the original additive manufacturing. This kind of design is not mostly used as a component,so this paper performs fatigue test from perpendicular to welding direction ,parallel to welding direction,and the weld thickness direction for SAW build-up. The test results show that fatigue property from the three directions is equivalent. Comparing the fatigue test results with the material fatigue curve of ASME Section m appendix I ,data points of the three test curves are all above ASME base curve,so performing mechanical evaluation with the material fatigue curve of ASME Section Ⅲ appendix I is proper for quickloc instrument nozzle （QIN） weld build-up.
出处
《电焊机》
2016年第12期11-15,共5页
Electric Welding Machine
