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  • 1
    Electronic Resource
    Electronic Resource
    Simulation of Solid-Liquid Two-Phase Flow Inside and Outside the Abrasive Water Jet Nozzle (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 339 (May 2007), p. 453-457 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Simulation of the velocity field of solid-liquid flow inside and outside the abrasive water jetnozzle was studied by the computational fluid dynamics software(CFD). The velocity field of theflow in the abrasive water jet (AWJ) nozzle was obtained. The results indicate that the swirl isproduced in the nozzle and the abrasives are all distributed along the inner surface of the nozzle. Thevelocity at the center of the outlet face is the highest, while it is smallest at the both edge. Thedispersion of the flow is happened when it flows out of the nozzle, but the flow velocity away fromthe outlet at a distance of about 4 times of the outlet diameter changes little. The fillet diameter, theinner cone angle, the length of mixing tube of the nozzle greatly affect the field of two-phase flow.The velocity of outlet increases with an increase in the fillet diameter, the flow becomes ease whenthe cone angle decreases, the mixing tube hampers the two-phase flowing
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/53/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.339.453.pdf
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  • 2
    Electronic Resource
    Electronic Resource
    An Experimental Study on Milling Al〈sub〉2〈/sub〉O〈sub〉3〈/sub〉 Ceramics with Abrasive Waterjet (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 339 (May 2007), p. 500-504 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: The machining performance of Al2O3 ceramics is studied by abrasive waterjet (AWJ)milling experiment. The machined surface characteristics and the effect of process parameters onmachined surface quality are analyzed. The results showed that the nozzle traverse speed and traversefeed have a strong effect on the machined surface quality. The effect of process parameters onmaterial volume removal rate and the milling depth is also researched. The results indicated that thematerial volume removal rate and the milling depth would be increased at the milling conditions ofhigher water pressure and bigger standoff distance. However, the milling depth will decrease at themilling conditions of higher traverse speed and higher traverse feed, and the material volume removalrate has a complex variation
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/53/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.339.500.pdf
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  • 3
    Electronic Resource
    Electronic Resource
    Simulation of Gas-Solid-Liquid Three-Phase Flow Inside and Outside the Abrasive Water Jet Nozzle (2006)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 532-533 (Dec. 2006), p. 833-836 
    Details
    ISSN: 1662-9752
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Simulation of the velocity field of gas-solid-liquid three-phase flow inside and outsidethe abrasive water jet nozzle was studied by the computational fluid dynamics software (CFD). Thecomplicated velocity field of the flow in the abrasive water jet (AWJ) nozzle and the abrasive trackin the nozzle were obtained. In the course of the simulation, the inter-phase drag exchangecoefficient model uses Gidaspow model (gas-solid), Wen-yu model (water-solid), Schiller-Naumannmodel (water-gas) respectively. The simulation results indicate that the swirl is produced in thenozzle and the abrasives are accelerated and moved around the swirl, and they are all distributedalong the inner surface of the nozzle, the gas is mostly distributed in the center of swirl. Thedispersion of the flow happens when it flows out of the nozzle, it can be divided into three zones,that is core zone, middle zone and border zone. At the core zone the velocity changes little while thevelocity changes greatly at the middle zone, the velocity fluctuates greatly at the border zone
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/14/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.532-533.833.pdf
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  • 4
    Electronic Resource
    Electronic Resource
    Theoretical Analysis on the Machining Mechanism in Ultrasonic Vibration Abrasive Waterjet (2006)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 315-316 (July 2006), p. 127-130 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: As a unique machining way, Abrasive Waterjet Machining (AWJ) is one of the fastestdeveloping new non-traditional machining methods and has a wide range of machinable materials.In this paper, the machining mechanism in AWJ is theoretically analyzed by impact dynamicmechanics method. There is stagnancy layer between waterjet and workpiece surface. It is foundthat the stagnancy layer and low energy abrasive particle are the main factors, which weakenmachining capability and effective utilizing ratio of energy of AWJ machining. UltrasonicVibration Abrasive Waterjet Machining, a new machining method, is put forward and the influenceof ultrasonic vibration on machining mechanism of AWJ machining is discussed
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/51/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.315-316.127.pdf
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  • 5
    Electronic Resource
    Electronic Resource
    Simulation of Velocity Field of Two-Phase Flow for Gas and Liquid in the Abrasive Water Jet Nozzle (2006)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 315-316 (July 2006), p. 150-153 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Simulation on velocity field of gas-liquid flow in the abrasive water jet nozzle wasstudied by the computed fluid dynamics (CFD) software, The complex velocity field of the flow inthe abrasive water jet nozzle can be obtained by means of simulation. The study on the effect of thenozzle inner cone angle on the velocity field shows that the cone angle affects the whirlpool’sintension and position of the whirlpool in the nozzle of abrasive water jet (AWJ), and it also affectsvelocity ‘s magnitude and distribution of the velocity on the cone surface
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/51/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.315-316.150.pdf
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  • 6
    Electronic Resource
    Electronic Resource
    Surface Characteristics of Ceramics Milled with Abrasive Waterjet Technology (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 329 (Jan. 2007), p. 335-340 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: The surface characteristics of Si3N4 ceramics milled with abrasive waterjet millingtechnology is studied. The milled surface characteristics and the effect of process parameters onmilled surface roughness are analyzed. The results show that the milled surface roughness rangesbetween 0.55 and 1.1um at the milling conditions under consideration and is changed with thechange of process parameters. The milled surface roughness will be significantly decreased at themilling conditions of lower water pressure and larger lateral spacing. The effect of nozzle traversespeed on milled surface roughness is complex, but a traverse speed of 1000mm/min is the optimumspeed for AWJ milling Si3N4 ceramics. The milled surface roughness first decreases then increaseswith an enhancement of standoff distance from 10mm to 30mm, and it also significantly decreaseswith the increase in abrasive mesh. Therefore, the medium standoff distance of 20mm and finerabrasive are the optimum conditions for AWJ milling Si3N4 ceramics with the process parametersunder consideration
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/52/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.329.335.pdf
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  • 7
    Electronic Resource
    Electronic Resource
    The Effect of High Pressure Abrasive Water Jet Cutting Parameters on Cutting Performance of Granite (2006)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 304-305 (Feb. 2006), p. 560-564 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: The effect of cutting parameters such as water pressure, nozzle traverse speed andstandoff distance on the granite cutting performance as characterized by kerf width, kerf taper, and striation drag angle are researched with a series of experiments using garnetabrasive and ultra high pressure abrasive water jet numerical control machine tool. The relationship between system pressure and abrasive mass flow rate is also studied. The research results show that the abrasive mass flow rate is only proportional to water pressure and the effect of other cutting parameters isnot significant. It is found that an increase in water pressure is associated with an increased kerf width and a decreased kerf taper. The kerf width decreases with the enhancement of nozzle traverse speed, and resulting in a significant increase in kerf taper as the nozzle traverse speed increases. The kerf width increases with the enhancement of standoff distance, and hence it causes a significant increase in kerf taper at the standoff distance domain from 3mm to 4mm and then a little decrease inkerf taper at the standoff distance increasing from 4mm to 5mm. The striation drag angle decreases with an increase in water pressure and a decrease in nozzle traverse speed
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/50/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.304-305.560.pdf
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  • 8
    Electronic Resource
    Electronic Resource
    Recent Development of Abrasive Water Jet Machining Technology (2006)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 315-316 (July 2006), p. 396-400 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abrasive waterjet (AWJ) machining is a new non-conventional machining technology.Compared with other conventional and non-conventional machining technologies, AWJ offers thefollowing advantages: no thermal distortion, small machining force, high machining versatility, etc.Therefore this technology is regarded as a high potential technology in the field of machiningdifficult-to-cut materials. In this paper, a comprehensive review of research situation about thecutting performance, the cutting mechanism and the measures to improve the cutting quality isgiven. The application of abrasive waterjet machining in turning, milling and drilling is reviewedfinally
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/51/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.315-316.396.pdf
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  • 9
    Electronic Resource
    Electronic Resource
    Study on Cutting Coloring Stainless Steel by Abrasive Waterjet (2006)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 315-316 (July 2006), p. 822-824 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Coloring stainless steel is a kind of corrosion-resistant and ornamental industry material.Whereas, the oxide film on stainless steel is sensitive to heat. At about 200[removed info], the oxide film wouldbe oxidized or dehydrated. With lesser cutting force and no thermal influence on target material,AWJ may be a suited method in cutting coloring stainless steel. In this paper, an experimental studyon cutting coloring stainless steel by abrasive waterjet was carried out. By analyzing macroscopicfeatures of kerfs, a damage model was established and a principle to optimize process parameterswas presented
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/51/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.315-316.822.pdf
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