Sökning: "electron beam melting"

Visar resultat 16 - 20 av 34 uppsatser innehållade orden electron beam melting.

1. 16. Investigation of the heat transfer of enhanced additively manufactured minichannel heat exchangers

   Master-uppsats, KTH/Skolan för industriell teknik och management (ITM)

   Författare :Hamidreza Rastan; [2019]
   Nyckelord :Minichannel; Microchannel; Heat exchanger; Additive manufacturing; 3D printing; Numerical simulation; CFD; Comsol;

   Sammanfattning : Mini-/microchannel components have received attention over the past few decades owing to their compactness and superior thermal performance. Microchannel heat sinks are typically manufactured through traditional manufacturing practices (milling and sawing, electrodischarge machining, and water jet cutting) by changing their components to work in microscale environments or microfabrication techniques (etching and lost wax molding), which have emerged from the semiconductor industry. LÄS MER

3. 17. Effect of Beam Scan Length on Microstructure Characteristics of EBM Manufactured Alloy 718

   Master-uppsats, KTH/Materialvetenskap

   Författare :Bengt Gustavsson; [2018]
   Nyckelord :EBM; Electron Beam Melting; Alloy718; AM; Additive Manufacturing;

   Sammanfattning : Additive Manufacturing (AM) as a method is on the rise and allow for a high freedom to create unique shapes without being limited by conventional machining methods. The Electron Beam Melting method, developed by Arcam AB in Mölndal, Sweden, use Powder Bed Fusion together with an electron beam and at an elevated temperature (+1000ºC) to lower stress due to thermal gradients. LÄS MER

4. 18. Defektidentifieringvid EBM-tillverkning

   Kandidat-uppsats, Mittuniversitetet/Avdelningen för kvalitets- och maskinteknik

   Författare :Christoffer Brochs; [2018]
   Nyckelord :electron beam melting; defekt; titan; additiv tillverkning; mikroskopi; mikrotomografi;

   Sammanfattning : Tillverkning av slutprodukter med additiv tillverkning   blir allt vanligare. Slutprodukter har högre krav på detaljens mekaniska   egenskaper än prototyper gör. Forskning har visat att porositeten är av stor   betydelse för en detaljs hållfasthet. LÄS MER

5. 19. Independent Project in Chemical Engineering and Materials Engineering : A literature study of powder-based additive manufacturing

   Kandidat-uppsats, Uppsala universitet/Institutionen för teknikvetenskaper

   Författare :Daniel Feldt; Petra Hedberg; Asker Jarlöv; Elsa Persson; Mikael Svensson; Filippa Vennberg; Therese You; [2018]
   Nyckelord :Additive manufacturing; selective laser melting; electron beam melting; binder jetting; stainless steel; tool steel; nickel alloys;

   Sammanfattning : The focus of this literary study was additive manufacturing (AM) and the purpose was to find general trends for selected materials that have been additively manufactured and compare them to results from other reviews. The raw materials studied were stainless steels 316L, 17-4 PH, 15-5 PH and 420, as well as tool steel H13 and nickel alloys 625, 718 and Hastelloy X. LÄS MER

7. 20. Independent Project in Chemical Engineering and Materials Engineering : A literature study of powder-based additive manufacturing

   Kandidat-uppsats, Uppsala universitet/Institutionen för teknikvetenskaper

   Författare :Daniel Feldt; Petra Hedberg; Asker Jarlöv; Elsa Persson; Mikael Svensson; Filippa Vennberg; Therese You; [2018]
   Nyckelord :Additive manufacturing; selective laser melting; electron beam melting; binder jetting; stainless steel; tool steel; nickel alloys;

   Sammanfattning : The focus of this literary study was additive manufacturing (AM) and the purpose was to find general trends for selected materials that have been additively manufactured and compare them to results from other reviews. The raw materials studied were stainless steels 316L, 17-4 PH, 15-5 PH and 420, as well as tool steel H13 and nickel alloys 625, 718 and Hastelloy X. LÄS MER