Results 1 to 10 of about 1,623 (247)

Breakup process modeling and production of FeSiAl magnetic powders by close-coupled gas atomization

Journal of Materials Research and Technology, 2023
Close-coupled gas atomization is extensively used in the industrial production of alloy powders due to the advantages of high efficiency, low cost and excellent powder properties.
Pu Wang, Jiaqi Liu, Yannan Dong, Zhengqu Zhu, Jing Pang, Jiaquan Zhang   +5 more
doaj   +5 more sources

Investigation on close-coupled gas atomization for Fe-based amorphous powder production via simulation and industrial trials: Part I. Melt breakup behaviors during primary atomization

Journal of Materials Research and Technology, 2023
The primary atomization process is simulated by Volume of Fluid (VOF) model and dynamic adaptive mesh method. The influence of melt mass flow rate and atomization pressure on the breakup process is investigated, and the effect of hot gas atomization is ...
Jiaqi Liu, Pu Wang, Yannan Dong, Huan Zhao, Jing Pang, Jiaquan Zhang   +5 more
doaj   +4 more sources

Thermal spraying NiCrAlY alloy powders prepared by close-coupled gas atomization [PDF]

Fenmo yejin jishu, 2023
NiCrAlY alloy powders used for the thermal spraying were fabricated by the closed-coupled gas atomization technology. The physical properties, particle size distribution, powder morphology, internal microstructure, and phase composition of the NiCrAlY ...
WANG Jun, ZHOU Xin, DU Zhong, ZHAO Hongchun, ZHANG Baohong, XIONG Ning   +5 more
doaj   +3 more sources

Numerical and experimental modelling of back stream flow during close-coupled gas atomization [PDF]

Computers and Fluids, 2013
This paper reports the numerical and experimental investigation into the effects of different gas jet mis-match angles (for an external melt nozzle wall) on the back-stream flow in close coupled gas atomization. The Pulse Laser Imaging (PLI) technique was applied for visualising the back-stream melt flow phenomena with an analogue water atomizer and ...
Andrew M Mullis, Duncan J Borman
exaly   +4 more sources

Research on flow field characteristic of close-coupled gas atomizing nozzles [PDF]

Fenmo yejin jishu
The atomization nozzle is the core component for the metal powder preparation by close-coupled gas atomization method. The pressure at the tip of the melt delivery tube and the stagnation point is very important for the smooth outflow of the molten metal
BAN Wei, CHEN Jiaqi, LIU Lulu, GE Tao, ZHANG Shuai   +4 more
doaj   +3 more sources

Investigation on close-coupled gas atomization for Fe-based amorphous powder production via simulation and industrial trials: Part II. Particle flight and cooling during secondary atomization

Journal of Materials Research and Technology, 2023
A two-way coupling Discrete Phase Model (DPM) is applied to calculate the secondary atomization process. The particle flight and cooling processes are studied under different process parameters.
Pu Wang, Jiaqi Liu, Yannan Dong, Huan Zhao, Jing Pang, Jiaquan Zhang   +5 more
doaj   +3 more sources

Evaluation of a Mathematical Model Based on Lubanska Equation to Predict Particle Size for Close-Coupled Gas Atomization of 316L Stainless Steel

Materials Research, 2022
Close-Coupled Gas Atomization (CCGA) is often used to produce spherical metal powders with a wider Particle Size Distribution (PSD) (10 – 500 µm) compared to that required by the main Additive Manufacturing processes (10 – 105 µm).
Flávia Costa da Silva, Moysés Leite de Lima, Giovanna Fiocco Colombo   +2 more
doaj   +3 more sources

Melt Damage and Prevention of Gas Nozzle Tip in Close-Coupled Gas Atomization

J
Gas atomization is one method for producing fine metal powder. In close-coupled gas atomization, a high-speed gas jet is ejected near the molten metal, and the molten metal is further broken down in the shear layer at the outer edge of the jet, producing
Nazuku Kato, Tetsuji Ohmura, Takeshi Maruyama, Yukitaka Hamada, Toshihiko Shakouchi   +4 more
doaj   +2 more sources

Influence of melt superheat on breakup process of close-coupled gas atomization

Transactions of Nonferrous Metals Society of China, 2007
In close-coupled gas atomization(CCGA), the influences of melt superheat on breakup process are fundamental to obtain desired or finer powder. Based on a series of Cu atomization experiment under different superheating conditions, the influences of melt superheat on breakup process were studied.
Bai-Yun Huang
exaly   +2 more sources

CFD Investigation of Melt Breakup Dynamics Induced by Delivery Tube End Geometry Configuration in Close-Coupled Gas Atomization

Metals
The breakup process of molten metal is the most critical stage in atomization powder production. Conducting systematic research on the breakup process of molten metal during gas atomization is highly significant for understanding the formation mechanism ...
Yi Wang, Bao Wang, Jianan Zhou, Changyong Chen   +3 more
doaj   +2 more sources