Effect of atomization pressure on the flow field distribution of TC4 alloy powder prepared by EIGA

4th International Conference on Advanced Composite Materials and Manufacturing Engineering 2017

材料科学;化学

Guo, Kuaikuai^1 ; Liu, Changsheng^1 ; Chen, Suiyuan^1 ; Li, Jinbao^1 ; Fu, Qian^1

Northeastern University, Shenyang

110819, China^1

关键词: Atomization pressure;    Flow field distribution;    Fluid-structures;    Inert gas atomization;    Liquid droplets;    Positive pressure;    Recirculation zones;    Suction pressures;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/207/1/012046/pdf
DOI  :  10.1088/1757-899X/207/1/012046

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

By means of the electrode induction melt inert gas atomization (EIGA) equipment designed and developed by ourselves, TC4 alloy powder were prepared. In the process of atomization, the pressure plays a decisive role in the morphology and particle size of the powder. In this paper, the effect of atomization pressure on the distribution of fluid structure was studied by computational fluid dynamics (CFD). The results show that with the increase of atomization pressure, the shape of the recirculation zone is expanded and then compressed. When the gas pressure is 2MPa, the suction pressure ΔP is 0.498MPa, thus forming a positive pressure zone. So it is easy to liquid droplets dripping up, resulting in clogging the nozzle, which has been confirmed in the experiment.