这美国海军’sNaval Sea Systems Command（NAVSEA）已批准了第一个3D打印零件，即原型排水管孔口（DSO）组件，用于船上安装。
“This install marks a significant advancement in the Navy’s ability to make parts on demand and combine NAVSEA’s strategic goal of on-time delivery of ships and submarines while maintaining a culture of affordability,” said Rear Admiral Lorin Selby, NAVSEA Chief Engineer and Deputy Commander for Ship Design, Integration, and Naval Engineering.
NAVSEA和添加剂制造
NAVSEA,美国海军最大的五个系统s commands, builds, buys and maintains naval ships, submarines, and combat systems to “meet the fleet’s current and future operational requirements.” With this responsibility, the command has previously integrated new technologies such as additive manufacturing to advance overall ship maintenance.
这command has 3D printed atie bolt anti-rotation toolused for fixing structurally supportive frames and trusses, anF-35 stealth fighter landing gear door component, andflip-top valves for oxygen masks海军飞机船员穿着。具有塑料材料的经验，Huntington Ingalls Industries – Newport News Shipbuilding（HII-NNS），海军航空母舰的制造商，提议在上面安装原型金属DSO组件哈里·S·杜鲁门（CVN 75）船用于测试和评估。
“By targeting CVN 75 [USS Harry S. Truman], this allows us to get test results faster, so-if successful-we can identify additional uses of additive manufacturing for the fleet,” added Rear Admiral Selby.
DSO的测试和评估
DSO组件是一种蒸汽系统组件，在使用在航空母舰上时，可以从蒸汽线中排水和去除水。金属3D打印的原型通过了功能和环境测试，涉及对材料，焊接，冲击，振动，静水和操作蒸汽的评估。
this process used traditional mechanical testing to identify requirements and acceptancecriteria. Following such tests, the prototype assembly will be removed for analysis and inspection.
“规格将在设计，制造和安装AM组件船上时为Navsea和行业建立一条途径，并简化批准过程，”加盖制造技术持有人Justin Rettaliata博士说。
“NAVSEA has several efforts underway to develop specifications and standards for more commonly used additive manufacturing processes.”
由于3D打印的DSO组件继续在低温和低压饱和蒸汽系统中进行评估，最终要求仍在审查中。
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Featured image shows the drain strainer orifice system. A version of this is approved as the first metal part created by additive manufacturing for shipboard installation and will be installed aboard the aircraft carrier USS Harry S. Truman. Photo via NAVSEA.
