Results 21 to 30 of about 4,177 (246)

Extending powder lifetime in additive manufacturing: Chemical etching of stainless steel spatter

open access: yesAdditive Manufacturing Letters, 2022
In laser powder bed fusion, unconsolidated metal powder on the build plate tends to comprise a proportion of oxidised powder after repeated use. This is generally caused by the generation of oxidised spatter particles during processing which can ...
James W. Murray   +4 more
doaj   +1 more source

COOLING RATES OF SPATTER DEPOSITS: A TWO-DIMENSIONAL THERMAL DIFFUSION MODEL AND ITS IMPLICATIONS FOR SPATTER PILE STABILITY [PDF]

open access: yes, 2021
Spatter occurs when erupted lava is hot enough to deform and agglutinate (adhere to other erupted clasts). Spatter deposits will agglutinate at high temperatures; however, if the temperature is too high it will re-mobilize and flow as lava.
Puleio, Claire
core   +1 more source

Characteristics of droplet spatter behavior and process-correlated mapping model in laser powder bed fusion

open access: yesJournal of Materials Research and Technology, 2021
The spatter behavior in the laser powder bed fusion (L-PBF) additive manufacturing is unavoidable owing to the interaction between high-energy laser beam and powder particles.
Di Wang   +5 more
doaj   +1 more source

CFD–DPM Simulation Study of the Effect of Powder Layer Thickness on the SLM Spatter Behavior

open access: yesMetals, 2022
Selective Laser Melting (SLM) has significant advantages in manufacturing complex structural components and refining the alloy microstructure; however, spatter, as a phenomenon that accompanies the entire SLM forming process, is prone to problems such as
Liu Cao, Qindan Zhang, Ruifan Meng
doaj   +1 more source

Effect of welding parameters on spatter formation in full-penetration laser welding of titanium alloys

open access: yesJournal of Materials Research and Technology, 2021
The spatter formation process was observed by high-speed imaging during the full-penetration laser welding (FPLW) process of 4 mm-thick TC4 alloy plates. The effects of process parameters on spatter formation were studied.
Hao Cheng   +4 more
doaj   +1 more source

Study of Spatter Formation and Effect of Anti-Spatter Liquid in Laser Powder Bed Fusion Processed Ti-6Al-4V Samples [PDF]

open access: yes, 2021
Spatter deposition has been found to have serious effects on mechanical properties of the metal parts printed using laser powder bed fusion technique.
Hanumantha, M.   +6 more
core   +1 more source

Interaction between Local Shielding Gas Supply and Laser Spot Size on Spatter Formation in Laser Beam Welding of AISI 304

open access: yesApplied Sciences, 2023
Background. Spatter formation at melt pool swellings at the keyhole rear wall is a major issue for laser deep penetration welding at speeds beyond 8 m/min. A gas nozzle directed towards the keyhole, that supplies shielding gas locally, is advantageous in
Christian Diegel   +6 more
doaj   +1 more source

3D tracking velocimetry of L-PBF spatter particles using a single high-speed plenoptic camera

open access: yesAdditive Manufacturing Letters, 2022
Particle spatter is an unavoidable by-product of the Laser-Powder Bed Fusion (L-PBF) process, as the high intensity of the incoming laser beam generates high vapor fluxes on the meltpool, allowing metal particles to be ejected into the process ...
Ralf D. Fischer   +5 more
doaj   +1 more source

Preventing Evaporation Products for High-Quality Metal Film in Directed Energy Deposition: A Review

open access: yesMetals, 2021
Directed energy deposition (DED), a type of additive manufacturing (AM) is a process that enables high-speed deposition using laser technology. The application of DED extends not only to 3D printing, but also to the 2D surface modification by direct ...
Kang-Hyung Kim   +3 more
doaj   +1 more source

Pipe Spatter Detection and Grinding Robot

open access: yesApplied Sciences, 2022
This paper proposes a robotic system that automatically identifies and removes spatters generated while removing the back-bead left after the electric resistance welding of the outer and inner surfaces during pipe production.
Sungho Hong   +5 more
doaj   +1 more source

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