Characteristics of abrasive slurry jet micro-machining: A comparison with abrasive air jet micro-machining

Nouraei, H.; Wodoslawsky, A.; Papini, M.; Spelt, J.K.

doi:10.1016/j.jmatprotec.2013.03.024

Cited by 99 publications

(42 citation statements)

References 45 publications

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“…The dependence of channel width and depth on standoff in this study did not agree with the results of Nouraei et al [6], who found negligible changes in channel width or depth with standoff for a low-pressure abrasive slurry jet which had negligible divergence. The present results are more consistent with those obtained with abrasive water jet machining (AWJM) and abrasive air jet machining (AJM), where the erosive jets have greater divergence.…”

Section: Effect Of Standoff Distancecontrasting

confidence: 99%

“…The jet divergence angle in the HASJM was 1.5°. In comparison, the divergence angle in low-pressure ASJM was 0.03°using a 254 μm orifice [6], while in conventional AWJM using the present water jet machine and micro-nozzle it was 6.9° [15].…”

Section: Resultsmentioning

confidence: 66%

“…Moreover, they reported an increase in channel depth with increasing pressure and dose of particles (decreasing traverse velocity), but standoff distance did not have a significant effect on channel depth. Nouraei et al [6] used a 4 MPa ASJM system to micromachine holes and 350-500 μm wide U-shaped microchannels having a very low waviness. They reported a glass erosion rate of 0.6 mg/g.…”

Section: Introductionmentioning

confidence: 99%

“…Both slurry tanks were continuously stirred using 102-mm diameter propellers at 180 rpm. The ratio of propeller to mixing tank diameter and the mixer rotational speed were chosen to prevent particle settlement, as calculated by Nouraei et al [6]. The slurry flowed under the pressure head H 2 =79 cm from the main tank through a 3.2-mm inner diameter tube into the mixing chamber of an OMAX 2626 Jet Machining Center (OMAX Corp., Kent, WA, USA) capable of water pump pressures, P p , of up to 345 MPa.…”

Section: Introductionmentioning

confidence: 99%

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High pressure abrasive slurry jet micro-machining using slurry entrainment

Haghbin

Ahmadzadeh

Spelt

et al. 2015

Int J Adv Manuf Technol

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A novel high-pressure (water pump pressure up to 250 MPa) abrasive slurry micro-machining (HASJM) system was introduced. By feeding a premixed slurry into the mixing chamber of a water jet machine with a micro-nozzle (mixing tube diameter of 254 μm), premature erosion of system components was avoided. An optimum erosion rate of 2.7 mg/g was reached when machining Al6061-T6 with a slurry of 25 μm aluminum oxide particles under conditions (slurry flow rate=200 g/min and water pump pressure=235 MPa) near to those which theoretically maximized momentum transfer between the inlet slurry and the water jet entering the mixing chamber from the orifice. It was found that when the standoff distance increased tenfold, the erosion rate almost doubled in glass, but decreased by 50 % in Al6061-T6, due to differences in the erosion at the jet periphery for the two materials. For aspect ratios greater than 0.9, high-quality symmetric channels with a centerline waviness below 6.9 μm and a centerline roughness below 1.1 μm could be produced using a single pass at a low traverse velocity of 40 mm/min. The use of multiple machining passes at a relatively high traverse speed (~1000 mm/min) was found to produce asymmetric channels when the aspect ratio was greater than 0.9, owing to jet deflection from steps formed on the cutting front. Channels produced by micro-milling Al6061-T6 and glass had a 50 % lower centerline waviness and 16 % lower centerline roughness than those made with the conventional abrasive water jet in which air and abrasive entered the mixing chamber.

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Section: Effect Of Standoff Distancecontrasting

confidence: 99%

Section: Resultsmentioning

confidence: 66%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

High pressure abrasive slurry jet micro-machining using slurry entrainment

Haghbin

Ahmadzadeh

Spelt

et al. 2015

Int J Adv Manuf Technol

View full text Add to dashboard Cite

show abstract

“…Figures 1 and 2 show the micro slurry-jet [8][9][10] adopted for surface micromachining by a mechanical removal process (MSE-T102K-5050, Palmeso Co., Ltd, Japan). The micro slurry-jet is a type of wet blasting where the slurry (water with alumina particles) is injected through a nozzle using compressed air.…”

Section: ．Surface Micromachining 2 1 Micro Slurry-jetmentioning

confidence: 99%