Finite Element Analysis and Experimental Study of Atomized Gas Flow Field in Spray Forming
Abstract
During the spray forming process of die steel, the gas flow field of nozzle atomizer has an important influence on the atomization effect of metal solution and the shape and performance of deposited billet. In this paper, the finite element analysis method was used to study the flow field distribution of the annular slot type restricted nozzle. The results showed that the negative pressure area was formed at the front of the atomizing gas outlet of the nozzle; the negative pressure area was enlarged and the negative pressure value was increased with the increase of the extending position of the liquid guide pipe and the atomizing pressure; when the atomizing pressure was 0.5MPa and the extending position of the liquid guide pipe was 7mm, the negative pressure value of the front of the liquid guide pipe could reach-38650Pa and the gas flow rate could reach 191.4m/s; the back-injection could be effectively avoided by optimizing the appropriate process parameters. And the damage of atomizing nozzle could be reduced.
References
Cui Chengsong, Zhang Jingguo. Research Progress in Preparation of High Performance Iron and Steel Materials by Spray Forming Rapid Solidification Technology (1)-Principle, Characteristics and Development Status of Spray Forming Technology ,[J]. Shanghai Metal, 2012, 34(2): 42-46.
Wu Xiaochun, Zuo pengpeng. development status and trend of hot work die steel at home and abroad [J]. die industry, 2013, 39(10): 1-9.
Lu Lin, Wu Wenheng, Long Qianlei, etc. Influence of Spray Forming Process Parameters on the Quality of Deposited Blanks, [J]. Material Guide, 2019, 33 (2):390-394
Huang Jinfeng, Zhang Jinxiang, Zhang Jishan, Wang Hebin, Lu Lin, Cui Hua, a hot-work die steel with high thermal strength injection molding and its preparation method ,2014, application number: 201410474748079, publication number: CN104278200
Zhang Jinxiang, Huang Jinfeng, Wang Hebin, et al. Microstructure and Mechanical Properties of Spray Formed H13 Steel [J]. Acta Metallica Sinica, 2014, 50(7): 787-794.
Tong Qian, Wu Xiaochun, Min Na. Study on SDH3, a high heat strength hot work die steel [J]. Journal of Iron and Steel Research, 2010 (2): 46-50.
Yin Jiancheng, Yang Huan, Liu Ying, etc. Simulation Study of Atomization Flow Field in Constrained Jet Deposition, [J]. Material Engineering, 2018, 46 (11):102-109.
Ting J, Connor J, Ridder S. High-speed cinematography of gas-metal atomization[J]. Materials Science and Engineering: A, 2005, 390(1): 452-460.
M. Mlkvik; P. Stähle; H.P. Schuchmann, et al. Twin-fluid atomization of viscous liquids: The effect of atomizer construction on breakup process, spray stability and droplet size[J]. International Journal of Multiphase Flow, 2015:19-31.
Shukla P, Mandal R K, Ojha S N. Modeling of heat flow and solidification during spray deposition process[J]. Transactions Indian Institute Of Metals, 2004, 57(3): 283-296.
Yang Liu, Zhou Li, Zhang Guoqing, etc. Influence of Spray Forming Atomizer Structure on Flow Field[J]. Powder Metallurgy Technology, 2014, 32, (2): 87-91.
Copyright (c) 2021 Yongqi Cheng, Yang Bai, Yuhang Chen, Peng Zhang
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
Authors contributing to this journal agree to publish their articles under the Creative Commons Attribution-Noncommercial 4.0 International License, allowing third parties to share their work (copy, distribute, transmit) and to adapt it, under the condition that the authors are given credit, that the work is not used for commercial purposes, and that in the event of reuse or distribution, the terms of this license are made clear. With this license, the authors hold the copyright without restrictions and are allowed to retain publishing rights without restrictions as long as this journal is the original publisher of the articles.
