【摘要】 为探索增材制造技术在核电稳压器喷雾头中的应用潜力，针对传统制造在复杂结构成型上的局限，结合结构优化设计与先进制造工艺，开发了新型一体化制造方案。通过计算流体力学（CFD）优化喷雾头内部流道，采用选区激光熔融技术（SLM）制备样品，经工艺参数优化确定最佳激光功率、扫描速度及层厚组合。性能测试表明，增材制造喷雾头的喷雾角度控制、流量分布均匀性等指标均满足设计要求，且材料力学性能与微观组织优良。与传统机加工相比，该技术在制造效率、材料利用率上优势显著，同时消除了传统分体式结构的紧固件异物风险。本研究验证了增材制造在核电关键部件制造中的可行性，为相关产品智能制造提供了新路径，也为其他核电设备的增材制造应用提供了参考。更多还原

【Abstract】 This study explores the application potential of additive manufacturing(AM) in nuclear power plant pressurizer spray heads. To address the limitations of traditional manufacturing in forming complex structures, a novel integrated manufacturing scheme is developed by combining structural optimization design with advanced AM processes. Computational Fluid Dynamics(CFD) is used to optimize the internal flow channel of the spray head, and samples are fabricated via Selective Laser Melting(SLM). The optimal combination of laser power, scanning speed, and layer thickness is determined through process parameter optimization. Performance tests show that the AM-manufactured spray head meets design requirements in terms of spray angle control and flow distribution uniformity, with excellent material mechanical properties and microstructural characteristics. Compared with traditional machining, AM offers significant advantages in manufacturing efficiency and material utilization, while eliminating the foreign object risk from fasteners in traditional split structures. This research validates the feasibility of AM for manufacturing key nuclear power components, provides a new path for the intelligent manufacturing of related products, and offers a reference for the application of AM in other nuclear power equipment.更多还原