压水堆核电站不锈钢主管道铸造

Castings for Stainless Steel Primary Piping in PWR Nuclear Power Plant

用电弧炉和ＡＯＤ双联冶炼核电站主管道Ｚ３ＣＮ２００９Ｍ，并根据Ｓｈａｅｆｌｅｒ图计算结果调整Ｚ３ＣＮ２００９Ｍ的铁素体含量。在离心铸管工艺中，用加大型筒壁厚、减小档板内孔直径、选大的重力加速度ｇ值、增加内孔加工余量等措施铸造出主管道样件。测试结果表明，主管道样件各项性能指标均满足ＲＣＣＭ的要求。

Primary piping steel of Z3CN20 09M for nuclear power plant is melted by combination of electric furnace and AOD furnace,ferrite content of Z3CN20 09M are adjusted based on the compute result of Scharffler.Measures by enlarging the wall thickness of shell,decreasing inside diameter of the baffle,selecting greater g value and increasing machining allowances of internal surface,etc,in centrifugal casting process,sample of primary piping are casted.Measure results show that various performance of sample of primary piping the needs of RCC M are without exception meet.