Low-pressure gas atomization of aluminum through a Venturi nozzle

Tsirlis, Michail; Michailidis, Nikolaos

doi:10.1016/j.apt.2020.02.011

Cited by 11 publications

(5 citation statements)

References 13 publications

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“…The inlet and outlet angle as well as the beta ratio (the ratio of the throat diameter to the main pipe diameter) of the Venturi nozzle were retained the same as in Ref. [17], namely at 12°, 50° and 0.294, respectively.…”

Section: Methodsmentioning

confidence: 99%

“…The details about the operation of the device, the size distribution and the morphology of the produced particles employing CO 2 at room temperature were investigated in Ref. [17]. The gas atomising temperature T 0 plays a pivotal role in the size distribution of the produced particles, a feature that is investigated in the current work along with gas pressure.…”

Section: Introductionmentioning

confidence: 99%

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The influence of gas pressure and temperature on the characteristics of aluminium powder produced by a novel low-pressure hot gas atomisation process

Tsirlis

Michailidis

2021

Powder Metallurgy

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A new low-pressure hot gas atomisation method exploiting the Venturi phenomenon is presented. The working gas is accelerated into a Venturi nozzle and is mixed with the molten metal that is atomised to transform to fine particles. The current work explores the case of pure aluminium that is atomised by carbon dioxide flowing through the Venturi nozzle, while the effect of operating gas temperature and pressure on the particle diameter distribution is investigated. At low temperatures, there is an almost linear relationship between the particle size and the gas pressure with a trend to produce smaller particles at higher gas pressures. This trend cannot be generalised at higher temperatures. The finer powder with average diameter d 50 of 129 µm and diametric range ΔH of 362 µm was produced at an operating gas pressure of 3 × 10 5 Pa (3 bar) and temperature of 903.15 K (630°C).

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The influence of gas pressure and temperature on the characteristics of aluminium powder produced by a novel low-pressure hot gas atomisation process

Tsirlis

Michailidis

2021

Powder Metallurgy

Self Cite

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“…Salah satu metode pembuatan serbuk yang menggunakan prinsip peleburan adalah metode atomisasi gas. Dimana metode ini menggunakan media fluida berupa gas (oksigen, nitrogen, argon) bertekanan tinggi/rendah dan/atau bersuhu tinggi/rendah untuk menumbuk dan/atau memecah leburan (liquid) dari suatu material, menjadi serbuk [1][2][3].…”

Section: Pendahuluanunclassified

Karakterisasi Serbuk Timah dari Sistem Atomisasi Gas Argon Panas - Sub Sistem Gas Alir Tabung Gas

Basyir

Aryanto

Jayadi

et al. 2021

JRM

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<p class="Abstract">The tin powder was used in some applications and technology such as for part manufacture through alloying, pressing, and sintering process, mixing material for the pyrotechnic application, the main material for solder pasta, mixing material on tin chemical, and others. Therefore, the demand for tin powder with a small size, spherical shape, and high purity is increasing severely. Indonesia (PT. Timah Tbk.) is one of the world’s largest producers of tin raw materials. This raw material can be processed be as powder by the atomization method. In this research, hot argon gas atomization system was used to generated tin powder. Raw tin was melted in a melting chamber with temperature variations of 600, 700, 800, and 900 °C. This experiment generates powder with a dominant size of 37 – 150 mm. Meanwhile, for size powder of 0 – 30 mm, dominated by size range of 0 – 10 mm. Furthermore, the size powder of 0 – 30 mm is composed of tin phase, without tin oxide. The tin powder of melting chamber temperature of 900 °C produces the largest tin powder with a size of 0 – 10 mm and spherical powder.</p>

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“…[22] Outside of respiratory measurements, the venturi tube is seen in several consumer products such as industrial vacuum cleaners, atomizers, wine aerators, clarinets, among many others. [23][24][25][26] The venturi design approach for spirometry specifically was originally evaluated by Titheradge and Robergs in a study that tested the performance of the venturi design under static and dynamic conditions. [27] A pneumotachometer and turbine flow sensor were used in series with the venturi meter, as reference measurements.…”

Section: Introductionmentioning

confidence: 99%

Bidirectional Venturi Flowmeter Based on Capacitive Sensors for Spirometry

Becerra,

Rafeedi,

Ramanarayanan

et al. 2023

Adv Materials Technologies

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In this work, a portable venturi tube capable of measuring bidirectional respiratory flow is developed and correlated the measurements to pulmonary function. Pressure signals are transduced using flexible and compressible capacitive foam sensors embedded into the wall of the device. In this configuration, the sensors are able to provide differential pressure readings, from which the airflow rate passing through the tube could be extrapolated. Utilizing the venturi effect, the geometry of the spirometer tube is designed through finite element analysis to measure respiratory airflow during inhalation and exhalation. The device tube is 3D‐printed and used to measure tidal breathing and deep breathing, along with peak expiratory flow rates, on a healthy individual. This spirometer design allows for easy‐to‐use point‐of‐care diagnoses and has the potential to improve the care of respiratory illnesses.

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Low-pressure gas atomization of aluminum through a Venturi nozzle

Cited by 11 publications

References 13 publications

The influence of gas pressure and temperature on the characteristics of aluminium powder produced by a novel low-pressure hot gas atomisation process

The influence of gas pressure and temperature on the characteristics of aluminium powder produced by a novel low-pressure hot gas atomisation process

Karakterisasi Serbuk Timah dari Sistem Atomisasi Gas Argon Panas - Sub Sistem Gas Alir Tabung Gas

Bidirectional Venturi Flowmeter Based on Capacitive Sensors for Spirometry

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