Suscripción a Biblioteca: Guest
Atomization and Sprays

Publicado 12 números por año

ISSN Imprimir: 1044-5110

ISSN En Línea: 1936-2684

The Impact Factor measures the average number of citations received in a particular year by papers published in the journal during the two preceding years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) IF: 1.2 To calculate the five year Impact Factor, citations are counted in 2017 to the previous five years and divided by the source items published in the previous five years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) 5-Year IF: 1.8 The Immediacy Index is the average number of times an article is cited in the year it is published. The journal Immediacy Index indicates how quickly articles in a journal are cited. Immediacy Index: 0.3 The Eigenfactor score, developed by Jevin West and Carl Bergstrom at the University of Washington, is a rating of the total importance of a scientific journal. Journals are rated according to the number of incoming citations, with citations from highly ranked journals weighted to make a larger contribution to the eigenfactor than those from poorly ranked journals. Eigenfactor: 0.00095 The Journal Citation Indicator (JCI) is a single measurement of the field-normalized citation impact of journals in the Web of Science Core Collection across disciplines. The key words here are that the metric is normalized and cross-disciplinary. JCI: 0.28 SJR: 0.341 SNIP: 0.536 CiteScore™:: 1.9 H-Index: 57

Indexed in

A STUDY OF LIQUID METAL ATOMIZATION USING CLOSE-COUPLED NOZZLES, PART 2: ATOMIZATION BEHAVIOR

Volumen 15, Edición 1, 2005, pp. 41-60
DOI: 10.1615/AtomizSpr.v15.i1.30
Get accessGet access

SINOPSIS

In this article we examine the gas dynamic and atomization behavior of a convergent and a converging-diverging (c-d) close-coupled nozzle used to fabricate fine metal powders by gas atomization. Part 1 of this article characterized and compared the gas dynamic behavior of the two nozzles over a range of nozzle stagnation pressures. Part 2 focuses on the liquid metal atomization behavior of these nozzles. A high-speed Schlieren technique is used to visualize liquid metal breakup behavior simultaneously with the supersonic gas flow pattern in which it occurs. At all conditions examined, atomization is characterized by a coarse but "prompt" primary breakup stage followed by a more energetic secondary breakup stage that takes place over an extended distance from the nozzle tip. The reduction in particle size observed with increasing stagnation pressure is believed to be due in large part to the increase in the supersonic length of the gas jets that extend away from the nozzle tip because of enhanced secondary breakup. As expected, the c-d nozzle did not produce finer powder than the convergent nozzle at stagnation pressures where they produced similarly long gas-only supersonic jets. Overall the present experiments suggest that particle size refinement is influenced by the ratio of the velocity decay length scale and the secondary breakup length scale, a quantity that is physically related to the gas-to-liquid metal mass flux ratio. Because such length scales have not been previously considered, new opportunities may exist to significantly improve particle size control and energy efficiency in this costly powder manufacturing process.

CITADO POR
  1. Zeoli N., Tabbara H., Gu S., CFD modeling of primary breakup during metal powder atomization, Chemical Engineering Science, 66, 24, 2011. Crossref

  2. Mullis A.M., McCarthy I.N., Cochrane R.F., High speed imaging of the flow during close-coupled gas atomisation: Effect of melt delivery nozzle geometry, Journal of Materials Processing Technology, 211, 9, 2011. Crossref

  3. Jeyakumar M., Kumar S., Gupta G. S., The Influence of Processing Parameters on Characteristics of an Aluminum Alloy Spray Deposition, Materials and Manufacturing Processes, 24, 6, 2009. Crossref

  4. Tong Mingming, Browne David J., Modelling compressible gas flow near the nozzle of a gas atomiser using a new unified model, Computers & Fluids, 38, 6, 2009. Crossref

  5. Tillmann W., Abdulgader M., Wire Composition: Its Effect on Metal Disintegration and Particle Formation in Twin-Wire Arc-Spraying Process, Journal of Thermal Spray Technology, 22, 2-3, 2013. Crossref

  6. Zeoli N., Tabbara H., Gu S., Three-dimensional simulation of primary break-up in a close-coupled atomizer, Applied Physics A, 108, 4, 2012. Crossref

  7. Mullis Andrew M., Cochrane Robert F., McCarthy Ian N., Adkins Nicholas J., Log-Normal Melt Pulsation in Close-Coupled Gas Atomization, Metallurgical and Materials Transactions B, 44, 4, 2013. Crossref

  8. Tillmann W., Abdulgader M., Anjami N., Hagen L., Studying the Effect of the Air-Cap Configuration in Twin-Wire Arc-Spraying Process on the Obtained Flow Characteristics Using Design of Experiment Oriented Fluid Simulation, Journal of Thermal Spray Technology, 2014. Crossref

  9. Li Xing-gang, Fritsching Udo, Spray Transport Fundamentals, in Metal Sprays and Spray Deposition, 2017. Crossref

  10. Zheng Mingyue, Zhang Shaoming, Hu Qiang, Xu Jun, Mao Weimin, Lu Liangliang, He Huijun, Liu Yingjie, Zhao Wendong, A novel crucible-less inert gas atomisation method of producing titanium powder for additive manufacturing, Powder Metallurgy, 62, 1, 2019. Crossref

  11. Hanthanan Arachchilage Kalpana, Haghshenas Majid, Park Sharon, Zhou Le, Sohn Yongho, McWilliams Brandon, Cho Kyu, Kumar Ranganathan, Numerical simulation of high-pressure gas atomization of two-phase flow: Effect of gas pressure on droplet size distribution, Advanced Powder Technology, 30, 11, 2019. Crossref

  12. Zhao Hui, Liu Haifeng, Breakup Morphology and Mechanisms of Liquid Atomization, in Environmental Impact of Aviation and Sustainable Solutions, 2020. Crossref

  13. Hernandez F., Riedemann T., Tiarks J., Kong B., Regele J. D., Ward T., Anderson I. E., Numerical Simulation and Validation of Gas and Molten Metal Flows in Close-Coupled Gas Atomization, in TMS 2019 148th Annual Meeting & Exhibition Supplemental Proceedings, 2019. Crossref

  14. He Wenchao, Lv Xuewei, Pan Feifei, Li Xueqin, Yan Zhiming, Novel preparation process of iron powders with semisteel by rotary cup atomizer, Powder Technology, 356, 2019. Crossref

  15. Chen Bo, Gao Dianrong, Li Yanbiao, Chen Chaoqun, Yuan Xiaoming, Wang Zesheng, Sun Peng, Investigation of the droplet characteristics and size distribution during the collaborative atomization process of a twin-fluid nozzle, The International Journal of Advanced Manufacturing Technology, 107, 3-4, 2020. Crossref

  16. Wei Mingwei, Chen Suiyuan, Sun Miao, Liang Jing, Liu Changsheng, Wang Mei, Atomization simulation and preparation of 24CrNiMoY alloy steel powder using VIGA technology at high gas pressure, Powder Technology, 367, 2020. Crossref

  17. Sikka Raghav, Vågsæther Knut, Bjerketvedt Dag, Lundberg Joachim, Experimental Study of Primary Atomization Characteristics of Sonic Air-Assist Atomizers, Applied Sciences, 11, 21, 2021. Crossref

  18. YOSHIMURA Kazuki, SAITO Kazuya, Production of metal powders by gas atomization using swirl and non-swirl nozzles, Transactions of the JSME (in Japanese), 88, 910, 2022. Crossref

  19. Urionabarrenetxea Ernesto, Avello Alejo, Rivas Alejandro, Martín José Manuel, Experimental study of the influence of operational and geometric variables on the powders produced by close-coupled gas atomisation, Materials & Design, 199, 2021. Crossref

  20. Sikka Raghav, Vågsæther Knut, Bjerketvedt Dag, Lundberg Joachim, Atomization characteristics of a bluff body-assisted sonic twin-fluid atomizer, International Journal of Spray and Combustion Dynamics, 2022. Crossref

  21. Silva Flávia Costa da, Lima Moysés Leite de, Colombo Giovanna Fiocco, Evaluation of a Mathematical Model Based on Lubanska Equation to Predict Particle Size for Close-Coupled Gas Atomization of 316L Stainless Steel, Materials Research, 25, 2022. Crossref

  22. Sikka Raghav, Vågsæther Knut, Bjerketvedt Dag, Lundberg Joachim, Experimental Investigation on the Spray Behaviour of Bluff Body Air-Assisted Atomizer Designs, Fluids, 7, 9, 2022. Crossref

  23. Zhang Min, Zhang Zhaoming, Liu Qiusheng, Withdrawn: Research progresses in flow field of close-coupled atomizer and atomization mechanism, Advanced Powder Materials, 2022. Crossref

  24. Sikka Raghav , Vågsæther Knut , Bjerketvedt Dag , Lundberg Joachim , ATOMIZATION CHARACTERISTICS OF AN ANNULAR SHEET WITH INNER AIR IN A SONIC TWIN-FLUID ATOMIZER , Atomization and Sprays, 33, 1, 2023. Crossref

Portal Digitalde Biblioteca Digital eLibros Revistas Referencias y Libros de Ponencias Colecciones Precios y Políticas de Suscripcione Begell House Contáctenos Language English 中文 Русский Português German French Spain