The effect of layer-by-layer laser sintering on the quality of copper powder sintered surface layer

Сапрыкин, А.А.; Saprykina, Natalya A.; Arkhipova, D A

doi:10.1109/ifost.2016.7884096

Cited by 2 publications

(3 citation statements)

References 17 publications

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“…Studies to determine optimal SLM conditions of magnesium powder МPF-4 (Russian State Standard 6001-79), average size of particles 50 µm, have been conducted in Laboratory "Additive Technologies" in Yurga Institute of Technology. For the purpose of research we use an experimental unit VARISKAF-100MBS, which supports variation of main melting process parameters (Yurga Institute of Technology, TPU affiliate) [27,28]. Laser beam manipulation with the help of a special software tool in a zone of 100х100х100 mm allows scanning along any preset contour.…”

Section: Methodsmentioning

confidence: 99%

Selective Laser Melting of Magnesium

Сапрыкин

Sharkeev

Saprykina

et al. 2020

KEM

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Magnesium-based materials find their use mainly in manufacturing light-weight constructions in motor-car, airspace industries, and biomedicine due to the low density. This paper provides an overview of introducing magnesium into SLM technology and describes searching experiments to prepare samples of magnesium powder МPF-4 (Russian State Standard 6001-79) conducted in the Laboratory of Yurga Institute of Technology. The study has determined appropriate parameters to synthesize a compact structure: laser output power 100 W, laser beam movement velocity 200 mm/s, scanning pitch 0.1 mm, modulation frequency of laser irradiation m = 2500 Hz, linear energy density Е=5 J/mm2, the process is to be carried out in argon shielding medium.

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Section: Methodsmentioning

confidence: 99%

Selective Laser Melting of Magnesium

Сапрыкин

Sharkeev

Saprykina

et al. 2020

KEM

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“…The morphology of copper powder plays an important role in the formation of porosity [12,13]. It is preferable that the copper powder has spherical shape.…”

Section: Copper Powder Treated By Fluidized Bedmentioning

confidence: 99%

“…The temperature is less than the solidus point of pure copper. Therefore, process (I) does not provide sufficient laser power to allow diffusion of copper powder into the substrate, leading to hot cracking [12,16,17].…”

Section: Physics-based Modeling Of Laser Powder Direct Energy Depositmentioning

confidence: 99%

Challenges in Three-Dimensional Printing of High-Conductivity Copper

El-Wardany¹,

She

Jagdale

et al. 2018

Journal of Electronic Packaging

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With recent advancements in additive manufacturing (AM) technology, it is possible to deposit copper conductive paths and insulation layers of an electric machine in a selective controlled manner. AM of copper enables higher fill factors that improves the internal thermal conduction in the stator core of the electric machine (induction motor), which will enhance its efficiency and power density. This will reduce the motor size and weight and make it more suitable for aerospace and electric vehicle applications, while reducing/eliminating the rare-earth dependency. The objective of this paper is to present the challenges associated with AM of copper coils having 1 × 1 mm cross section and complex features that are used in producing ultra-high efficiency induction motor for traction applications. The paper also proposes different approaches that were used by the authors in attempts to overcome those challenges. The results of the developed technologies illustrate the important of copper powder treatment to help in flowing the powder easier during deposition. In addition, the treated powder has higher resistance to surface oxidation, which led to a high reduction in porosity formation and improved the quality of the copper deposits. The laser powder direct energy deposition (LPDED) process modeling approach helps in optimizing the powder deposition path, the laser power, and feed rate that allow the production of porosity free thin wall and thin floor components. The laser powder bed fusion (LPBF) models identify the optimum process parameters that are used to produce test specimens with >90% density and minimum porosity.

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The effect of layer-by-layer laser sintering on the quality of copper powder sintered surface layer

Cited by 2 publications

References 17 publications

Selective Laser Melting of Magnesium

Selective Laser Melting of Magnesium

Challenges in Three-Dimensional Printing of High-Conductivity Copper

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