Additive Manufacturing (AM) is a fabrication technique widely used for the long range of structures and highly complex components. AM involves the process of printing successive layers of material on top of each other to obtain the final component. After the discovery in 1986 and subsequent development in the following years, various materials and equipment has been evolved to revolutionize the manufacturing and logistic processes. Additive manufacturing is being employed in many industries. Additive manufacturing offers many advantages such as less waste, high precision, freedom of designing. Among all additive manufacturing machines Selective Laser Melting (SLM) and Electro – Optical System (EOS) are used in this work for the development of highly complex components for variety of applications. Use of additive manufacturing in aerospace industry is more common as the products should be precise and defect free to avoid failures. Inconel Nickel alloys are widely used in aerospace industry due to the provided corrosion resistance and excellent mechanical properties even at high temperatures. The present work is mainly focussed on the selection of AM machine for the development of Inconel718 (nickel-chromium alloy) valve components on the basis mechanical test, hardness test, surface roughness test results. Among the two AM machines i.e., Selective Laser Melting and Electro – Optical System, one machine is selected for the develop the component after analysing test results conducted with both machines test samples. The design and development of valve components (piston, body and flange) is performed after the optimization and selection of manufacturing machine. Since the components are having highly complex design, many trails were done to estimate the uniformity in the output as per the standards. Many other post manufacture analysis techniques such as laser scanning test to identify anomalies in 3-D design, Surface roughness test and post processing such as sand blasting to modify surface finish were done on the components. Therefore, the present work demonstrates the development of Incone718 valve components by additive manufacturing techniques especially for Aerospace applications, by selecting the AM equipment is needed to obtain utmost properties for the developed components.
La produzione additiva (AM) è una tecnica di fabbricazione ampiamente utilizzata per la lunga serie di strutture e componenti altamente complessi. AM comporta il processo di stampa di strati successivi di materiale uno sopra l'altro per ottenere il componente finale. Dopo la scoperta nel 1986 e il successivo sviluppo negli anni seguenti, vari materiali e attrezzature si sono evoluti per rivoluzionare i processi produttivi e logistici. La produzione additiva viene impiegata in molti settori. La produzione additiva offre molti vantaggi, come meno spreco, alta precisione, libertà di progettazione. Tutte le macchine di produzione additive Selective Laser Melting (SLM) e Electro-Optical System (EOS) sono utilizzate per lo sviluppo di componenti altamente complessi. L'uso della produzione additiva nell'industria aerospaziale è più comune in quanto i prodotti devono essere precisi e privi di difetti per evitare guasti. Inconel Le leghe di nichel sono ampiamente utilizzate nell'industria aerospaziale. Prova di durezza, prova di durezza, risultati del test di rugosità superficiale. Le due macchine, Selective Laser Melting ed Electro - Optical System, una macchina è selezionata per lo sviluppo del componente dopo il test. La progettazione e lo sviluppo dei componenti delle valvole (pistone, corpo e flangia) vengono eseguiti dopo l'ottimizzazione e la selezione della macchina di produzione. Uniformità nella produzione come per gli standard. Design 3D, test di rugosità superficiale e post-elaborazione, come test di scansione laser per identificare anomalie, rugosità superficiale Di conseguenza, la presentazione dello sviluppo dei componenti della valvola Inconel718 mediante tecniche di produzione additiva in particolare per applicazioni aerospaziali, selezionando l'attrezzatura AM.
Development of Inconel 718 valve components by additive manufacturing for aerospace applications
KALLURI, NITHYA SREE
2017/2018
Abstract
Additive Manufacturing (AM) is a fabrication technique widely used for the long range of structures and highly complex components. AM involves the process of printing successive layers of material on top of each other to obtain the final component. After the discovery in 1986 and subsequent development in the following years, various materials and equipment has been evolved to revolutionize the manufacturing and logistic processes. Additive manufacturing is being employed in many industries. Additive manufacturing offers many advantages such as less waste, high precision, freedom of designing. Among all additive manufacturing machines Selective Laser Melting (SLM) and Electro – Optical System (EOS) are used in this work for the development of highly complex components for variety of applications. Use of additive manufacturing in aerospace industry is more common as the products should be precise and defect free to avoid failures. Inconel Nickel alloys are widely used in aerospace industry due to the provided corrosion resistance and excellent mechanical properties even at high temperatures. The present work is mainly focussed on the selection of AM machine for the development of Inconel718 (nickel-chromium alloy) valve components on the basis mechanical test, hardness test, surface roughness test results. Among the two AM machines i.e., Selective Laser Melting and Electro – Optical System, one machine is selected for the develop the component after analysing test results conducted with both machines test samples. The design and development of valve components (piston, body and flange) is performed after the optimization and selection of manufacturing machine. Since the components are having highly complex design, many trails were done to estimate the uniformity in the output as per the standards. Many other post manufacture analysis techniques such as laser scanning test to identify anomalies in 3-D design, Surface roughness test and post processing such as sand blasting to modify surface finish were done on the components. Therefore, the present work demonstrates the development of Incone718 valve components by additive manufacturing techniques especially for Aerospace applications, by selecting the AM equipment is needed to obtain utmost properties for the developed components.| File | Dimensione | Formato | |
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2018_December_Kalluri.pdf
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Descrizione: Thesis Dissertation
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https://hdl.handle.net/10589/145289