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.