Blade surface uniformity of blisk finished by abrasive flow machining

Fu, Yongzhong; Wang, Xuanping; Gao, Hang; Wei, Haibo; Li, Shichong

doi:10.1007/s00170-015-8270-0

Cited by 31 publications

(17 citation statements)

References 19 publications

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“…Marzban et al [17] applied a spin motion to the rotating workpiece and found significant change in material removal. Fu et al [18] concluded that media streamline follows an irregular path near the trailing edge during the finishing process.…”

Section: Introductionmentioning

confidence: 99%

Material removal analysis of hybrid EDM-assisted centrifugal abrasive flow machining process for performance enhancement

Ali

Walia

Murtaza

et al. 2020

J Braz. Soc. Mech. Sci. Eng.

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Finishing of metallic machine components is a prime requirement for the better performance and longer product life cycle. To get highly finished machine components, a number of conventional and non-conventional finishing processes have evolved in recent times to overcome constraints due to shape and properties of materials. This paper discusses a new hybrid technique, Thermal additive centrifugal abrasive flow machining (TACAFM) which is a combination of centrifugal forceassisted abrasive flow machining and electrical discharge machining (EDM) process. In this process abrasive particles move coaxially with workpiece and also rotate inside the hollow workpiece with the help of a rotating system and also generated thermal effect as in EDM process. Due to the movement of abrasive particles along with rotation, Coriolis effect plays a major role in determining the position of abrasives at any time. Therefore, in the present study, Coriolis component effect is incorporated in the mathematical model to predict the material removal in TACAFM. Also, its parameters, viz current, abrasive concentration, pressure, duty cycle, and rotation of electrode, were optimized using response surface methodology. A simulation model is also presented using Ansys ® 15 software to analyze the effect of temperature around the work surface when varying gap between the electrode and work surface along with rotational speed of electrode. Experimental results show a good agreement with the mathematical model. The experiments conducted on the developed process show average 44.34% improvement in material removal and average 39.74% improvement in surface finish, respectively.

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Section: Introductionmentioning

confidence: 99%

Material removal analysis of hybrid EDM-assisted centrifugal abrasive flow machining process for performance enhancement

Ali

Walia

Murtaza

et al. 2020

J Braz. Soc. Mech. Sci. Eng.

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show abstract

“…Some researchers 9,10 employed the AFF process for finishing of cylindrical workpieces. AFF is also used for finishing of components with complex geometry such as large bearing ring raceways, 11 blisk blades 12 and knee implants. 13 In order to understand the physics of the AFF process, authors have proposed several numerical models.…”

Section: Introductionmentioning

confidence: 99%

Development of polymer abrasive medium for nanofinishing of microholes on surgical stainless steel using abrasive flow finishing process

Singh

Sankar

2019

Proceedings of the Institution of Mechanical Engineers, Part B:

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The finishing operation completes the manufacturing cycle of a component. Depending on the level of finish (micro and nano) required on the component surface, different finishing processes are employed. Several components employed in medical, automotive and chemical industries use different types of passages for the flow of fluid. The surface roughness of such passages decides the functionality of the component. Drug-eluting stents are one of the recent advancements in the medical industry. They possess microholes for release of the drugs to the point of cure. Microholes are mostly fabricated by thermal-based micromachining processes that generate metallurgically destroyed surface layers with high surface roughness. Later, these are polished using chemical or electrochemical polishing techniques, which chemically destroy the quality of the surface. These metallurgically and chemically modified (destroyed/changed) rough surfaces on the microhole wall can cause contamination of the drug. So in this article, microholes of diameter 850 ± 30 µm are fabricated in surgical stainless steel (SS 316L) workpieces using the electric discharge micromachining process. Machined microholes are finished by employing a non-traditional finishing process called the abrasive flow finishing process. Instead of using a commercially available expensive abrasive flow finishing medium, the economic medium is fabricated in-house, and its rheological study is carried out. Machining process produces microholes with a surface roughness of about 1.40 ± 0.10 µm. Later, by finishing of microholes with the abrasive flow finishing process, the surface roughness is reduced to 150 nm (percentage surface roughness improvement of about 88.53%). Therefore, the abrasive flow finishing process is a viable alternative to chemical-based polishing processes as it removes the recast layer and achieves nanosurface roughness.

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“…7–9 Its basic working principle is to squeeze the slurry with special rheological properties to flow through the closed flow path bounded by the fixture and the workpiece, and an inner surface with high precision can be obtained under micro-cutting. 10–12 While processing, the abrasive grains are used as numerous micro-cutting tools, and the material is removed under the reciprocating action of the abrasive particles. 13 In addition to ordinary stainless steel materials, it can also process ceramics, semiconductors, quartz, and other materials.…”

Section: Introductionmentioning

confidence: 99%

Study on the surface forming mechanism of the solid–liquid two-phase grinding fluid polishing pipe based on large eddy simulation

Wei

et al. 2019

Proceedings of the Institution of Mechanical Engineers, Part B:

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To study the surface forming mechanism of the solid–liquid two-phase abrasive flow processing, the large eddy simulation method was used. Taking a 90° stainless steel elbow as the research object, the action mechanism of the dynamic pressure, wall shear force, flow state of the abrasive flow at different cross-sections, formation of the vortex, and trajectory of the abrasive flow on the inner surface of the elbow with abrasive flow composed of solid-phase silicon carbide and liquid-phase hydraulic oil are discussed. This study explores the distribution characteristics of the flow pattern of solid–liquid two-phase abrasive flow. Moreover, the wear and erosion of the abrasive grain and the wall of the workpiece are discussed. The mechanism of surface formation of solid–liquid two-phase abrasive flow is revealed.

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Blade surface uniformity of blisk finished by abrasive flow machining

Cited by 31 publications

References 19 publications

Material removal analysis of hybrid EDM-assisted centrifugal abrasive flow machining process for performance enhancement

Material removal analysis of hybrid EDM-assisted centrifugal abrasive flow machining process for performance enhancement

Development of polymer abrasive medium for nanofinishing of microholes on surgical stainless steel using abrasive flow finishing process

Study on the surface forming mechanism of the solid–liquid two-phase grinding fluid polishing pipe based on large eddy simulation

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