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Journals / Gazi Üniversitesi Mühendislik Mimarlık Fakültesi Dergisi / 1999 / Cilt: 14 - Sayı: 1-2

Effect of nozzle type on the particle size of air atomised aluminium powders

Nozul tipinin hava atomize aluminyum tozu boyutuna etkisi

İbrahim USLAN
Pages
1–15
Publication Date
2022-10-18
DOI
—
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

Air atomised aluminium powders have bimodal size distribution, irregular shapes and show cellular-dendritic surfaces.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:In this study, the effect of nozzle type on the particle size of air atomised aluminium powders, produced by using Mannesmann and Laval nozzles was investigated.
📊
Key Findings & Data:Although Laval type nozzles had high metal/gas flow rates, they produced finer powders than Mannesmann type nozzles.
💡
Conclusion & Impact:Air atomised aluminium powders have bimodal size distribution, irregular shapes and show cellular-dendritic surfaces.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

In this study, the effect of nozzle type on the particle size of air atomised aluminium powders, produced by using Mannesmann and Laval nozzles was investigated. Atomisation experiments have been carried out in the Gazi Gas Atomi sation Unit. Although Laval type nozzles had high metal/gas flow rates, they produced finer powders than Mannesmann type nozzles. Furthermore, the powder production rate also increased approximately four times when Laval nozzles were used and the gas consumption decreased the same ratio. Air atomised aluminium powders have bimodal size distribution, irregular shapes and show cellular-dendritic surfaces.

Özet

Bu çalışmada, Mannesmann ve Laval tipi nozullarla üretilmiş hava atomize alüminyum tozu boyutuna nozul tipinin etkisi araştırılmıştır. Gazi Gaz Atomizasyon Ünitesi'nde gerçekleştirilen çalışmalarda, Laval tipi nozulların, aynı basınçlarda daha yüksek metal/gaz debisi oranına sahip olmalarına rağmen daha ince tozlar ürettikleri tespit edilmiştir. Ayrıca Laval tipi nozulların toz üretim hızını yaklaşık dört kat artırdıkları, gaz tüketiminde de aynı oranlarda bir ekonomi sağladıkları belirlenmiştir. Genellikle iki modlu bir dağılım sergileyen hava atomize alüminyum tozları karmaşık şekilli olup, hücresel-dendritik bir yüzey görünümüne sahiptir.

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Cite This Article

USLAN, İ. (2022). Effect of nozzle type on the particle size of air atomised aluminium powders. Gazi Üniversitesi Mühendislik Mimarlık Fakültesi Dergisi, Cilt: 14 - Sayı: 1-2, 1–15. https://ajindex.com/articles/524323

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References (17)

  1. TS 3087, “Toz Metalurjisi-Terimler”, TSE, Ankara, 1978
  2. German, R.M., Powder Metallurgy Science, Metal Powder Industries Federation, A.B.D., 1994
  3. Lawley A., Atomization: The Production of Metal Powders, MPIF, Princeton, New Jersey, A.B.D., 1992
  4. Klar, E., ve Fesko, J.W., “Production of Metal Powders”, Metals Handbook, Cilt 7, Powder Metallurgy, 25-51, Ohio, A.B.D., 1984
  5. Sarıtaş, S.,ve Dogan C., Metal Powder Prouction by Centrifugal Atomization”, Int. J. Powder Metallurgy, Cilt 30, 419-427, 1994
  6. Pandey, O.P. ve Ojha, S.N., “Production and Characterization of Rapidly Solidified Powders of Al-Si Alloys”, Powder Metallurgy Int., Cilt 23, No 5, 291-295, 1991
  7. Kim, Y.W., Griffith W.M. ve Froes, F.H., “Surface Oxides in P/M Aluminium Alloys”, J. Metals, 27-33, 1985. 8.Turan, H., ve Sartaş S., Gaz Atomizasyonu ile Metal Tozu Üretimi", 6. Uluslararası Makine Tasarımı ve İmalat Kongresi, ODTÜ, Ankara, 61-73, 21-23 Eylül 1994
  8. Ünal, A., “Influence of Atomizing Conditions on Structure of Aluminium Powders”, Aluminium Technology Con., The Institute of Metals, London, 673-678, 1986
  9. Gerking, L., “Powder from Metal and Ceramic Melts by Laminar Gas Streams at Supersonic Speeds”, Powder Metallurgy Int., Cilt 25, No 2, 59-65, 1993
  10. Ünal, A., “Production of Rapidly Solidified Aluminium Alloy Powders by Gas Atomisation and Their Applications”, Powder Metallurgy, Cilt 33, No 1, 53- 64, 1990
  11. Aller, A.J., ve Losada, A., “Characteristics of Atomized Powders”, Powder Metallurgy Int., Cilt 21, No 5, 15-19, 1985
  12. Liddiard, P.P., “Aluminium Powder Metallurgy in Perspective”, Powder Metallurgy, Cilt 27, No 4, 193-200, 1984
  13. Dong, H. ve Zhumei, S., “Study of the Fast Reaction Characteritics of Aluminized PETN Explosive Powders”, Combustion and Flame, Cilt 105, 428-430, 1996. 15 Uslan, İ., Sarıtaş, S., Gaz Atomizasyonda Nozul Geometrisi, Gazi Cinsi ve Basıncının Aluminyum Tozu Boyutuna Etkisinin Araştırılması", Gazi Üniversitesi, Ankara, 217-226, 1996
  14. Uslan İ. Sarıtaş, S., Davies T.J., “Effects of Variables on Size and Characteristics of Gas Atomised Aluminium Powders”, Powder Metallurgy, Cilt 42, No 2, 157-163, 1999
  15. Ünal A. ve Robertson, D.G.C., “Pilot Plant Gas Atomizer for Rapidly Solidified Metal Powders”, Int. J. Rapid Solidification, Cilt 2, 219-229, 1986
  16. Yule, A.J. ve Dunkley, J.J., Atomization of Melts, Oxford Univ. Press, New York, A.B.D., 1994
  17. Dube, R.K., Koria, S.C. ve Subramanian, R., “Atomization of Alumini