意大利国防承包商Leonardohas successfully utilized Italian 3D printer manufacturer机器人中欧FFF(熔丝加工)3 d打印ology to produce aerospace components.
Leonardo used ROBOZE’s ARGO line of 3D printers to manufacture a range of carbon fiber-filled nylon 6 and PEEK parts. By switching from conventional production methods to additive manufacturing (AM), the Italian defence company was able to make time and cost savings. In addition, Leonardo was able to take advantage of the increased design flexibility allowed by the process, to produce parts with increased thermal and chemical resistance.
“Techno-polymers such as Polyether Ether ketone (PEEK), combined with a high presence of chopped carbon fibers, open up some interesting horizons for development,” said Stefano Corvaglia, Intellectual Property Manager and Head of Research and Development of the Aerostructures Division. “Testing with these materials is of particular scientific and technological interest since they give some structural and chemical-physical properties of extreme technological significance to the items produced, for example thermal and chemical resistance”.
3D印刷行业的机器人
Roboze成立于2014年，总部位于巴里，意大利和德克萨斯州，是高温FFF/FFF/FDM 3D打印机和晚期热塑性聚合物的开发商。据报道，使用公司的3D打印材料（例如Carbon PA和Carbon Peek）生产的零件通常被称为“超级聚合物”，据报道能够匹配使用金属创建的机械性能。
ROBOZE has entered into partnerships to develop these performance polymers with companies such asSabic和Solvay, in order to create a range of高性能丝。例如，使用SABIC开发的Extem AMHH811F丝，具有高度的耐热性和阻燃性，并被生产以替代极端应用中的金属。
自公司成立以来一+400 3D打印机，Roboze Systems都有其特色获得专利的无皮带系统。这包括Argo 500系统与其前身不同，它能够用高粘度材料（例如PEEK，ULTEM AM9085F，碳PA和PEEK）打印替换零件，并装有碳纤维。
该公司最新系列的3D打印机，Xtreme系列，在北美发射Rapid+TCT 2019。Designed to bridge the gap between the ROBOZE’s desktop and production systems, the One Xtreme and One+400 Xtreme were dubbed “desktop/production printers.” The 3D printers featured upgraded belt systems and High Viscosity Polymers (HVP) extruders, facilitating the processing of more challenging materials.
最近，Roboze与大学合作开发了其用于国防应用的3D打印技术。例如，在2019年，该公司与Skybox工程, an aerospace research and development spin-off from theUniversity of Pisa， 生产无人机的功能零件。此外，机器人与特拉华大学在2020年2月，加速成品零件的3D打印和mission-critical components为了美国军队。
In ROBOZE’s latest partnership with defence contractor Leonardo, the company is now attempting to develop the aerospace applications of its 3D printing technology within the defence industry.
The collaboration between ROBOZE and Leonardo
据报道，利用机器人Argo 500工业3D打印机，据报道，莱昂纳多能够使用熔融丝材料去除与3D打印相关的任何表面孔隙率和粗糙度。这有点归功于该系统的专利无皮带设计，该设计能够生产高达0.01毫米的零件。此外，该过程是可重复的，并且与性能最高的聚合物和复合材料兼容，也为意大利国防承包商提供生产力优势。
该测试本身旨在用基于聚合物的元素（例如碳PA和Carbon Peek）代替传统的金属模具。通过优化机器人3D打印机的打印参数，Leonardo不仅能够生产具有光滑表面的零件，而且可以保持真空，这是材料固化过程的重要组成部分。
Additionally, utilizing technopolymers within the AM process, enabled the company to use them for enhanced high-temperature applications. During testing, the high level of thermal stability provided by the polymer and carbon fiber materials did not cause significant deformations in the molds during the cross-linking vulcanization process. As a result, Leonardo found that through using these heat-resistant composites, it could reduce development costs and times compared to traditional manufacturing techniques.
The project, led by Nicola Gallo, Lead Engineer of Leonardo’s aerostructures division, was recognized during the A&T 2020 fair in Turin during February 2020, receiving the Innovation 4.0 award in the research and university category. Now, having successfully integrated 3D printing into Leonardo’s production process, the companies will examine the durability and repetition of the process within thermal cycles.
“热塑性技术聚合物由线性或几乎没有分支的非连接链组成。通过提高温度，我们可以将它们带到粘性状态，从而将其塑造出来，并在添加剂技术的情况下，以分层制造它们。” Corvaglia补充说。“更重要的是，由于一项使我们能够达到制造方面无法达到精确度的技术，我们可以提高我们开发原型的能力和速度。”
Heat resistance and FFF 3D printing materials
3D printing material manufacturers are increasingly developing polymers for FFF systems that display enhanced heat and chemical resistant qualities.
俄亥俄州的化学品和材料公司拉布里唑例如，在2020年6月推出了三种新的FFF热塑性聚氨酯（TPU）材料，用于融合细丝制造（FFF）3D打印。热塑性塑料专为FFF应用而设计，例如工业夹具和固定装置，显示，显示长期热能性能。
波兰3D打印丝制造商光谱丝, launched its newABS医疗和PETG FX120聚合物in April 2020. Both filaments are flexible, and display a high-temperature resistance.
总部位于德克萨斯州的3D打印机制造商Essentium Inc，宣布与化学和矿物质材料专家合作LEHVOSS Group发展高性能材料2020年3月。专门针对基于生产水平的3D打印过程而创建了专门为生产级挤压工艺而创建的PEEK材料和高温尼龙（HTN）。
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特色图片显示了使用莱昂纳多航空技术技术开发的战斗机。图片通过莱昂纳多。
