Results 1 to 10 of about 1,028,947 (168)
Metals, 2021 This study observed the effect of filler metal type on mechanical properties of NAB (NiAl-bronze) material fabricated using wire arc additive manufacturing (WAAM) technology.
Jaewon Kim +3 more
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Effect of Gas Bubbling Filtration Treatment Conditions on Melt Quality of AlSiMgCu Alloy
Metals, 2021 In this study, the optimal conditions of gas bubbling filtration (GBF) treatment for securing highly-clean molten Al-Si-Mg-Cu alloy were identified. The effects of GBF treatment time and stabilization time on the degree of molten metal cleanliness were ...
Ho-Sung Jang +6 more
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Metals, 2021 With the rise in the demand for eco-friendly and electric vehicles, welding and heat treatment are becoming very important to meet the necessary weight reduction, complexity, and high functionality of die castings.
Ho-Jung Kang +6 more
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Metals, 2023 A383 Al-Si-Cu alloy matrix composites were reinforced with different amounts (0.5, 1.0, 1.5 and 2.0 wt%) of chopped multiwalled carbon nanotubes (MWCNTs) and fabricated using the oxygen-replacing die casting (ORDC) process to reduce gas porosities via ...
Seong-Hyo Oh +6 more
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Material extrusion for ceramic additive manufacturing with polymer-free ceramic precursor binder
Materials & Design, 2022 Additive manufacturing of dense ceramic products has been challenging because of the high polymeric content of the ceramic feedstock materials. Several studies have been conducted to increase the ceramic content in the feedstock, but the binder and ...
Hyuk Hur +3 more
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Energies, 2023 Pillow-plate heat exchangers (PPHEs) represent a suitable alternative to conventional shell-and-tube and plate heat exchangers. The inherent waviness of their channels promotes fluid mixing in the boundary layers and facilitates heat transfer.
Reza Afsahnoudeh +5 more
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Development of Automatic System to Discharge Sludge in Oil Separator of Marine Engine [PDF]
한국정밀공학회지, 2018 A separator used by marine engine functions as a purifier by dividing engine oil into pure oil and impurities. By rotating the separator at a high speed between 1800 to 4500 rpm, fine particles of oil inside the separator are centrifuged due to the ...
Chan Hoon Ahn, Man Gi Kim, Jun Choi
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Effects of Casting Conditions for Reduced Pressure Test on Melt Quality of Al-Si Alloy
Metals, 2020 The present study investigated the effect of the casting conditions for the reduced pressure test (RPT) on the melt quality of Al-Si alloy. The casting conditions considered in RPT were the atmospheric exposure during melting, sampling method, and mold ...
Ho Sung Jang +4 more
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Microwave-induced Enhancement of Interlayer Strength in FDM-printed Nylon6/Carbon Fiber Composites [PDF]
한국정밀공학회지Among 3D printing techniques, fused deposition modeling (FDM) is known for its design flexibility, rapid fabrication, and the ability to produce complex geometries without molds. However, weak interlayer adhesion often results in poor mechanical strength
Si Woo Kim, Ho Geun Nam, Jong Wan Ko
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Optimizing interlayer cooling for SUS316L thin wall fabricated by directed energy deposition
Journal of Materials Research and Technology, 2023 The direct energy deposition (DED) process requires proper interlayer cooling (IC) to avoid geometric failure caused by overheating of the midsection. This study suggests an optimum IC step based on a constitutive equation, instead of trial and error, to
Seulgi Hwang +7 more
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