Pressure build-up at the metal delivery tube orifice in ultrasonic gas atomization

1988 ◽  
Vol 23 (7) ◽  
pp. 2457-2463 ◽  
Author(s):  
J. C. Baram ◽  
M. K. Veistinen ◽  
E. J. Lavernia ◽  
M. Abinante ◽  
N. J. Grant
Keyword(s):  
Gas Atomization ◽  
Delivery Tube ◽  
Ultrasonic Gas Atomization ◽  
Metal Delivery

Effects of geometry and position of the metal delivery tube on ultrasonic gas atomization

1987 ◽  
Vol 5 (10) ◽  
pp. 373-379 ◽  
Author(s):  
M.K. Veistinen ◽  
E.J. Lavernia ◽  
M. Abinante ◽  
N.J. Grant
Keyword(s):  
Gas Atomization ◽  
Delivery Tube ◽  
Ultrasonic Gas Atomization ◽  
Metal Delivery

Ultrasonic gas alloy atomization under near-zero aspiration pressure

2015 ◽  
Vol 29 (10n11) ◽  
pp. 1540034
Author(s):  
Pengfei Yan ◽  
Deping Wang ◽  
Biao Yan
Keyword(s):  
Energy Loss ◽  
Gas Flow ◽  
Gas Atomization ◽  
Delivery Tube ◽  
Fine Powders ◽  
Ultrasonic Gas Atomization ◽  
Flow Deflection

In this paper, ultrasonic gas atomization (USGA) of Zn – Al under near-zero aspiration pressure was discussed. The protrusion length of delivery tube was modified to adjust the aspiration pressure. Under near-zero aspiration pressure, melt filming was observed by camera and more fine powders were produced. While under larger subambient aspiration pressure, melt filming was unavailable, corresponding to less fine powders. The results suggest that the position of the wake near the delivery tube can be optimized under near-zero aspiration. Less protrusion of delivery tube reduces the energy loss in gas flow deflection. Both facilitate to produce finer powders.

scholarly journals Pressure Distribution around the Melt Delivery Tube for a Confined-type Gas Atomization Nozzle

1996 ◽  
Vol 82 (8) ◽  
pp. 665-670 ◽  
Author(s):  
Tadashi FUKUDA ◽  
Mutsuo NAKANISHI ◽  
Toshihiko KUBO
Keyword(s):  
Pressure Distribution ◽  
Gas Atomization ◽  
Delivery Tube ◽  
Atomization Nozzle

Confined Gas Atomization: The Role of the Melt Delivery Tube in Particle Size Control

1986 ◽  
Vol 80 ◽  
Author(s):  
R. V. Raman
Keyword(s):  
Unique Feature ◽  
Size Control ◽  
Lower Surface ◽  
Spherical Particles ◽  
Gas Atomization ◽  
Reactive Elements ◽  
Delivery Tube ◽  
Atomization Process ◽  
Rapidly Solidified

AbstractGas atomization is one of the key processes used for the production of rapidly solidified materials. The unique feature of the gas atomization process is its capability to form spherical powders of multicomponent alloys containing reactive elements. Spherically shaped powder is specified in the secondary processing operations used in a number of applications. This requirement has resulted from the higher flow rate, better packing density, and lower surface area obtained in spherical particles compared to irregularly shaped particles.

Pressurization and aspiration phenomena at the tip of the metal delivery tube of an annular slit atomizer

1992 ◽  
Vol 27 (10) ◽  
pp. 1325-1330 ◽  
Author(s):  
Jun Shen ◽  
Chengsong Cui ◽  
Zuling Jiang ◽  
Qingchun Li
Keyword(s):  
Delivery Tube ◽  
Annular Slit ◽  
Metal Delivery

Powder Size and Distribution in Ultrasonic Gas Atomization

JOM ◽  
1985 ◽  
Vol 37 (8) ◽  
pp. 22-26 ◽  
Author(s):  
G. Rai ◽  
E. Lavernia ◽  
N. J. Grant
Keyword(s):  
Powder Size ◽  
Gas Atomization ◽  
Ultrasonic Gas Atomization

Pressure characteristics at the tip of the metal delivery tube in a spray deposition process

1994 ◽  
pp. 725-729
Author(s):  
Jun Shen ◽  
Songyan Zeng ◽  
Zuling Jiang ◽  
Chengsong Cui ◽  
Qingchun Li
Keyword(s):  
Spray Deposition ◽  
Deposition Process ◽  
Delivery Tube ◽  
Metal Delivery ◽  
Pressure Characteristics
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