A new technology in surface finishing: Fluidized bed machining (FBM) of aluminium alloys

Barletta, Massimiliano

doi:10.1016/j.jmatprotec.2005.11.020

Cited by 45 publications

(35 citation statements)

References 11 publications

(16 reference statements)

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“…Nevertheless, in employing progressively smaller abrasive size, the average size of splinters embedded in the surface decreased, and consequently, the result has a more aesthetically pleasing appearance. Similar results were found in previous studies of fluidized bed machining, which found widespread embedding phenomena of harder abrasive splinters in the softer substrates are recurrent phenomena (alumina splinters in aluminium and brass substrates [32,33], copper splinters in polyamide 6 and 66 substrates [34]). Fig.…”

Section: Analysis Of Surface Morphologysupporting

confidence: 90%

“…An optimized jet velocity value of 13 m s À1 was analytically found by Kim et al [24] in their attempt to model a magnetic AJM system, and Barletta et al found a similar value to be best in FB-AJM of stainless steel tubular parts [27]. Moreover, a selflimiting condition imposed by abrasive jet speed on accuracy of theoretical finishing achievable has already been stressed by one of the authors in a previous study of fluidized bed machining of complex-shaped aluminium components [32] as well as in further studies of AJM processes [23,[25][26].…”

Section: The Analysis Of Process Parameters: the Influence Of Abrasivmentioning

confidence: 83%

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Progress in fluidized bed assisted abrasive jet machining (FB-AJM): Internal polishing of aluminium tubes

Barletta

Guarino

Rubino

et al. 2007

International Journal of Machine Tools and Manufacture

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This paper deals with the internal finishing of tubular components made from a high strength aluminium alloy (AA 6082 T6) using a fluidized bed assisted abrasive jet machining (FB-AJM) system.Firstly, a Taguchi's experimental plan was used to investigate the influence of abrasive jet speed, machining cycle, and abrasive mesh size on surface roughness and material removal trends. Secondly, the leading finishing mechanisms were studied using combined 3d profilometer-SEM analysis to monitor the evolution of the surface morphology of machined workpieces. Finally, the circumferential uniformity and precision machining of the inner surface of workpieces were tested by evaluating the values of the more significant roughness parameters in different circumferential locations.Consistent trends of surface roughness vs. operational parameters were measured, and significant material removal was found to affect the workpieces during machining. As a result, FB-AJM was found to preferentially machine the asperities and irregularities of the surface, thereby altering the overall surface morphology producing more regular and smoother finishing. Moreover, the good circumferential uniformity and machining accuracy FB-AJM guarantees even on ductile aluminium alloy workpieces ensure that this technology can be applied to a diverse set of industrial components. r

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Section: Analysis Of Surface Morphologysupporting

confidence: 90%

Section: The Analysis Of Process Parameters: the Influence Of Abrasivmentioning

confidence: 83%

Progress in fluidized bed assisted abrasive jet machining (FB-AJM): Internal polishing of aluminium tubes

Barletta

Guarino

Rubino

et al. 2007

International Journal of Machine Tools and Manufacture

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“…Experimental literature data confirm an unambiguous relationship between the material removal rate and the flow rate. In particular, the material removal rate is often proportional to the speed at which bubbles rise in the abrasives bed v b p , where b is an empirical exponent ranging from 0.5 to 4 for low and high impact speeds, respectively (Barletta, 2006;Barletta et al, 2007b). The highest values of b were found for sliding as the predominant impact mechanism, and are evidence of faster impacts on the workpiece surface and thus of faster material removal rates.…”

Section: Process Parametersmentioning

confidence: 99%

“…Barletta et al were the first to identify a relationship between the material removal rate and the particle size and shape at both low (Barletta, 2006) and high impact speed for various substrate materials Barletta et al, 2007a,b). Typically, the sharper the abrasive particles are, the higher is the material removal rate as a result of the concurrent action of multiple cutting edges.…”

Section: Process Parametersmentioning

confidence: 99%

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Progress in abrasive fluidized bed machining

Barletta

2009

Journal of Materials Processing Technology

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3D parameter to quantify the anisotropy measurement of periodic structures on rough surfaces

2013

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In this paper, a new 3D roughness parameter, Sreg, is proposed to quantify the regularity of a surface, independent of the amplitude and the scanning length units of the surface. The efficiency of this parameter is tested on noisy periodical surfaces with degrees of anisotropy. This parameter lies between zero (perfect noise) and 100% (a perfect periodic surface). This parameter enables the identification of the anisotropy directions of regularity for a given surface. For a periodical surface, the greater the noise, the lower the anisotropy. A direction function is proposed to analyse the direction of regularity of a rough surface, which then permits characterization of the directional regularity of the topography. The regularity parameter can be used for several purposes: to identify the direction of periodical structures formed by laser-pulsed radiations on the surface of solid workpieces; to examine the reproducibility of surface machining methods such as finishing process; and to identify the surface regularity produced by abrasive machining, such as precision surface grain, abrasive slotting, and lapping.

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A new technology in surface finishing: Fluidized bed machining (FBM) of aluminium alloys

Cited by 45 publications

References 11 publications

Progress in fluidized bed assisted abrasive jet machining (FB-AJM): Internal polishing of aluminium tubes

Progress in fluidized bed assisted abrasive jet machining (FB-AJM): Internal polishing of aluminium tubes

Progress in abrasive fluidized bed machining

3D parameter to quantify the anisotropy measurement of periodic structures on rough surfaces

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