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jet stream

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Published: 01 November 1995
Fig. 24 Jet stream trailback effect More
Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002156
EISBN: 978-1-62708-188-7
... Abstract Abrasive jet machining (AJM) is a process that removes material from a workpiece through the use of abrasive particles entrained in a high-velocity gas stream. This article discusses the operation of principal components, advantages, and disadvantages of the AJM system. It describes...
Image
Published: 15 June 2020
Fig. 3 Schematic of a continuous-stream material jetting process More
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003042
EISBN: 978-1-62708-200-6
... to 410 MPa (60 ksi). The fluid is filtered to 0.5μm (20μin.) and pumped in relatively low volumes, typically 4 to 8 L/min (1 to 2 gal/min). The high-pressure fluid is expelled through an orifice to form a jet stream. Orifices are typically made of sapphire with typical diameters ranging from 0.8 to 7.6...
Series: ASM Handbook
Volume: 24
Publisher: ASM International
Published: 15 June 2020
DOI: 10.31399/asm.hb.v24.a0006550
EISBN: 978-1-62708-290-7
... Abstract This article discusses the advantages, limitations, and applications of material jetting of ceramics, focusing on two primary methods of droplet formation: continuous stream and drop on demand (thermal and piezoelectric) ink jetting processes. ceramic particles material jetting...
Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002158
EISBN: 978-1-62708-188-7
... machining WATERJET MACHINING (WJM), also called hydrodynamic machining, uses a high-velocity stream of water as a cutting tool. This process is limited to the cutting of nonmetallic materials when the jet stream consists solely of water. However, when fine abrasive particles are injected into the water...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006115
EISBN: 978-1-62708-175-7
... Abstract This article summarizes sampling of powders, which includes the sampling of stored material and flowing streams, sample reduction and evaluation, and weight of sample required. It also summarizes the classification of powders. Classifiers are divided into two categories: counterflow...
Series: ASM Handbook
Volume: 5A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v05a.a0005725
EISBN: 978-1-62708-171-9
... state toward a substrate to form a coating. Particle trajectory, temperature, and velocity at any moment in time in the gas stream constitute the spray stream or pattern. To understand what is happening in a hot jet stream, refer to Fig. 12 , which shows particle trajectories in a plasma jet. While...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005107
EISBN: 978-1-62708-186-3
... a sapphire nozzle to form a coherent high-velocity (914 m/s, or 3000 ft/s) jet. A stream of abrasive particles is introduced into the nozzle to form a concentrated abrasive jet slurry (0.5 to 2.5 kg/L, or 4 to 20 lb/gal). The momentum of the waterjet as it travels toward the nozzle is transferred...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006084
EISBN: 978-1-62708-175-7
... a liquid metal is broken up into droplets by impingement of high-pressure jets of gas, water, or oil ( Fig. 1a and b ) Centrifugal atomization, where a liquid stream is dispersed into droplets by the centrifugal force of a rotating disk, cup, or electrode ( Fig. 1c ) Vacuum or soluble-gas...
Series: ASM Handbook
Volume: 5A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v05a.a0005718
EISBN: 978-1-62708-171-9
... material is then atomized and propelled toward the substrate by process gases or atomizing jets formed through nozzles. Thermal spray is also a line-of-sight process, where the projected stream of droplets deposits only onto surfaces that are directly in line with the spray stream. Because thermal...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003194
EISBN: 978-1-62708-199-3
... be slit with high quality edges. Test cuts are recommended before selecting the final operating parameters. The high energy density of the jet stream causes a slight rise in temperature, which may melt some types of plastics at low traverse rates, but the temperature is not high enough to be a concern...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005130
EISBN: 978-1-62708-186-3
... jet (cooling stream 1), usually of CO 2 gas, is positioned on the back of the workpiece directly opposite the heat source. Occasionally, and more normally with a laser system, an alternate cooling jet (cooling stream 2) is located behind the heat source. Fig. 1 Schematic of thermal forming...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005221
EISBN: 978-1-62708-187-0
.... Such uncontrolled directional propagation can lead to metal damage in the form of oxide flow-tube defects or, in the case of silica green sand molds, mold expansion defects such as rattails that damage the mold surface at the edges of the jetting stream. By contrast, vertical bottom gates, in which gravity...
Book Chapter

Series: ASM Handbook
Volume: 4A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v04a.a0005816
EISBN: 978-1-62708-165-8
... with water or water/air streams ( Ref 2 ); sprays of volatile liquid quenchants other than water ( Ref 3 ); and high-pressure jets of an oil ( Ref 4 ), water ( Ref 5 , 6 , 7 ), or aqueous polymer solution ( Ref 8 ) under the liquid level in a bath. One advantage of spray quenching, relative to other...
Series: ASM Handbook
Volume: 5A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v05a.a0005706
EISBN: 978-1-62708-171-9
... or liquid feedstock is fed into the plasma stream and is accelerated toward the workpiece by the plasma jet. Plasma temperatures in the powder heating region for most plasma guns range from approximately 6000 to 15,000 °C (11,000 to 27,000 °F), significantly above the melting point of any known material...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003669
EISBN: 978-1-62708-182-5
... to erosion. Cavitation is caused by the formation and collapse of vapor bubbles in a liquid near a metal surface. Impingement refers to damage caused by liquid jets, droplets, or solid particles impacting a solid surface. Mechanical damage to metal surfaces removes protective films. These films can...
Series: ASM Handbook
Volume: 10
Publisher: ASM International
Published: 15 December 2019
DOI: 10.31399/asm.hb.v10.a0006663
EISBN: 978-1-62708-213-6
... include, but are not limited to: It is important that the gas volume measured by the instrument is representative of the desired sample, or that the relationship is understood. Sampling bias can be an advantage or disadvantage. The complexity of the sample must be considered. A complex gas stream...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006065
EISBN: 978-1-62708-175-7
... metal issues in the form of a stream from a tundish and falls 50 to 200 mm by gravity. Then it is atomized by the gas directed at a point, either by means of discrete jets or an annular nozzle concentric with the metal stream. This method is easy to operate but highly inefficient and is not suitable...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003179
EISBN: 978-1-62708-199-3
...). Fig. 9 Two types of blades for shearing of bars Oxyfuel Gas Cutting OXYFUEL GAS CUTTING (OFC) includes a group of cutting processes that use controlled chemical reactions to remove preheated metal by rapid oxidation in a stream of pure oxygen. A fuel gas/oxygen flame heats the workpiece...