A novel method of utilizing static mixer to obtain mixing homogeneity of multi-species powders in laser metal deposition

Chen, Jipeng; Xie, Shouchun; He, Haibo

doi:10.1016/j.cja.2022.07.013

Cited by 3 publications

(2 citation statements)

References 27 publications

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“…The DED system is mainly composed of three subsystems, namely, energy source and focusing system (laser generator and laser light path), feeding system (powder feeder and powder mixer), and motion control system (CNC workbench and mechanical arm). To realize the synchronization of the powder mixing and powder feeding process, a novel DED technology [7][8][9] is proposed, which is mainly through adding a mixer for powder mixing in the powder feeding system.…”

Section: Introductionmentioning

confidence: 99%

Structural Optimized Design of a Powder Mixer for Multi-Material Directed Energy Deposition Based on CFD-DPM

Gao

Zhang

et al. 2023

Coatings

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Directed energy deposition (DED) offers an unprecedentedly convenient and efficient additive manufacturing approach to novel alloy designs such as high entropy alloys. As a critical component of the novel DED system, a powder mixer to stably and uniformly mix different powders plays an important role in the DED process. In this paper, the computational fluid dynamics-discrete phase model (CFD-DPM) method was used to simulate the characteristics of the gas-solid coupled fluid inside the powder mixer. The influence of the structural details of the powder mixer on the motion characteristics of the gas-solid coupled fluid was investigated by numerical simulation. Based on the numerical simulation results, the range of parameters of critical structure such as the inlet angle, the diameter and height mixing chamber, and the height of the bottom was determined. The difference in powder mixing uniformity among different powder mixers was qualitatively analyzed through powder mixing experiments. The BSE-EDS results of mixed powder samples show that the mixer with reasonable structural parameters has better mixing uniformity. In summary, this work provides a powerful reference for the rapid optimization design of the powder mixer structure.

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Section: Introductionmentioning

confidence: 99%

Structural Optimized Design of a Powder Mixer for Multi-Material Directed Energy Deposition Based on CFD-DPM

Gao

Zhang

et al. 2023

Coatings

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“…4 LDED equipment for heterogeneous metal additive manufacturing. (a) Schematic of the working principle of LDED for heterogeneous metal additive manufacturing [56] ; (b) dual hopper LDED system [57] ; (c) LASERTEC 6600 additivesubtractive composite manufacturing equipment [58] ; (d) schematic of LMD static powder mixer equipment [59] 1002304 -7 [68] ; (c) 17 -4 PH/AISI 316L component formed by LPBF -WAAM [69] ; (d) LPBF -LDED equipment, and QCr0.8 copper alloy/S06 stainless steel heterometal connection through the intermediate layer In718 [70] 表 4 异质金属的复合制造技术及其优势［76］及解决方案 Fig. 7 Factors affecting the quality of heterogeneous metal interfaces and solutions.…”

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confidence: 99%

异质金属激光增材制造研究及应用进展（特邀）

Ma Yi,

Guan Yingchun

2024

中国激光

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Significance Major advances in materials science and manufacturing technology are being driven by fields such as aerospace, which are placing increasingly stringent requirements for the construction of complex, reliable, and highperformance components intended for extreme service conditions. For example, engine components must possess both high heat resistance and excellent thermal conductivity, while structural component aim with a combination of lightweight design and high strength. These intricate performance

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In-situ powder mixing for laser-based directed energy deposition of functionally graded materials

Chen,

Xie,

Huang

2023

Adv. Manuf.

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A novel method of utilizing static mixer to obtain mixing homogeneity of multi-species powders in laser metal deposition

Cited by 3 publications

References 27 publications

Structural Optimized Design of a Powder Mixer for Multi-Material Directed Energy Deposition Based on CFD-DPM

Structural Optimized Design of a Powder Mixer for Multi-Material Directed Energy Deposition Based on CFD-DPM

异质金属激光增材制造研究及应用进展（特邀）

In-situ powder mixing for laser-based directed energy deposition of functionally graded materials

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