Experimental analysis of irregularities of metallic surfaces generated by abrasive waterjet

Valíček, Ján; Držík, Milan; Hloch, Sergej; Ohlídal, Miloslav; Lupták, Miloslav; Vagaská, Alena; Radvanská, Agáta; Hlaváček, Petr; Páleníková, Kateřina

doi:10.1016/j.ijmachtools.2007.01.004

Cited by 37 publications

(20 citation statements)

References 5 publications

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“…The intensity and the efficiency of the machining process depend on several AWJ process parameters. These include hydraulic, abrasive, work material and cutting parameters (Hashish 1991;Valicek et al 2007).…”

Section: Introductionmentioning

confidence: 99%

An investigation on surface roughness of granite machined by abrasive waterjet

2011

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Abrasive waterjet (AWJ) cutting is an emerging technology which enables the shaping of practically all engineering materials. However, AWJ cutting may cause roughness and waviness on the cut surface. This significantly affects the dimensional accuracy of the machined part and the quality of surface finish. In this study, the surface roughness of three granites is experimentally investigated for varying process parameters in abrasive waterjet. The philosophy of the Taguchi design is followed in the experimental study. Effects of the control (process) factors on the surface roughness are presented in terms of the mean of means responses. Additionally, the data obtained are evaluated statistically using the analysis of variance (ANOVA) to determine significant process parameters affecting the surface roughness. Furthermore, effects of the material properties on the surface roughness are assessed. It was statistically found that the water pressure and the abrasive flow rate are the most significant factors influencing the surface roughness of granites. Additionally, a consistent relationship between the material grain size and surface roughness of the granites was observed.

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Section: Introductionmentioning

confidence: 99%

An investigation on surface roughness of granite machined by abrasive waterjet

2011

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“…Using contactless optical measurements, surface roughness/waviness was quantitatively measured. For characterization of the AWJ-cut surface, they proposed a dimensionless statistical parameter C, based on root mean square roughness evaluation of the worst cut surface zone [19]. Shet et al presented a paper on the results of finite element simulations of high-pressure water jet-assisted orthogonal metal cutting.…”

Section: Literature Surveymentioning

confidence: 99%

Surface integrity analysis of abrasive water jet-cut surfaces of friction stir welded joints

Kumar

Chattopadhyaya

Dixit

et al. 2016

Int J Adv Manuf Technol

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Nowadays, the abrasive water jet (AWJ) technology is much in use for cutting materials into complex shapes with high dimensional accuracy. The objective of the present paper is to study the topography as well as the roughness of the surfaces in friction stir welded (FSW) joints, machined by AWJ. It discusses machinability of the FSW joints by AWJ. Subsequently, this paper makes a critical analysis of the surface properties by optical profilometer. Top and bottom surfaces, created by FSW, have also been analyzed using an optical 3D measurement system to determine the morphology and topographic parameters. FSW possesses favourable joining properties and generates a minimum heat-affected zone (HAZ) because of its comparatively low temperature coalescence. Three friction stir welding samples were prepared at 500, 710 and 1000 rpm with a welding speed of 40 mm/min on AA 6101-T6. After analysis, it was found that the sample prepared at 500 rpm and with welding speed of 40 mm/min produces a surface fit for industrial applications in terms of surface roughness and dimensional accuracy. It has also been observed that unlike other conventional or non-conventional processes, no HAZ is generated during the cutting of FSW joints by using the AWJ technology.

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“…In 2007 Valíček et al [10] oriented towards the formation of optical method of detection and analysis of geometrical parameters of topography of surface generated in the course of abrasive water jet cutting of material. The materials were classified according to cutability T CUT .…”

Section: State Of the Art Analysismentioning

confidence: 99%

On-line monitoring of technological process of material abrasive water jet cutting

et al. 2015

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Original scientific paper The paper deals with the indirect ways of on-line monitoring of technological processes of cutting. The objective of the study is a design of on-line monitoring system for the cutting technology through an abrasive water jet. In cutting by the abrasive water jet two parallel phenomena are formed. The phenomena are represented by generated surface and vibrations. For the purpose of proving of the hypothetical assumptions on dependence of generated surface quality on vibrations the experiments utilizing stainless steel AISI 304 were performed. The experiments were realized at four diverse settings of cutting head traverse speed. The material vibrations were collected by means of two independent accelerometers PCB IMI 607 A11. One of the accelerometers was oriented towards the cutting direction and the other in direction perpendicular to cutting. Sampling frequency was of 30 kHz. The generated topography of the material was measured by an optical profilometer FRT MicroProf. The collected data were evaluated by a virtual tool developed in LabView 8.5 in the form of vibration analyses being consequently mutually compared. Both phenomena proved to be dependent on common technological cause, i.e. on cutting head traverse speed. At the same time the study offers a theoretical design of the on-line monitoring system and of the future heading of the research in this field. Keywords: abrasive water jet; monitoring, on-line; vibrations On-line praćenje tehnološkog postupka rezanja materijala abrazivnim vodenim mlazomIzvorni znanstveni članak Rad se bavi indirektnim načinima on-line praćenja tehnoloških postupaka rezanja u svrhu projektiranja on-line sustava praćenja primjenom tehnologije rezanja abrazivnim vodenim mlazom. Rezanjem abrazivnim vodenim mlazom javljaju se dva fenomena, a to su generirana površina i vibracije. U svrhu dokazivanja hipotetske pretpostavke ovisnosti kvalitete generirane površine o vibracijama, provedeni su eksperimenti s nehrđajućim čelikom AISI 304 s četiri različita podešavanja brzine prijelaza rezne glave. Vibracije materijala su se pratile pomoću dva odvojena akcelerometra PCB IMI 607 A11. Jedan je bio orijentiran na smjer rezanja, a drugi na pravac okomit na rezanje. Učestalost uzimanja uzorka bila je 30 kHz. Dobivena topografija materijala mjerena je optičkim profilometrom FRT MicroProf. Dobiveni su se rezultati proračunavali virtualnim alatom razvijenim u in LabView 8.5 u obliku analiza vibracija koje su se stalno međusobno uspoređivale. Pokazalo se da obadva fenomena ovise o zajedničkom tehnološkom razlogu, t.j. brzini prijelaza rezne glave. U isto vrijeme u radu se daje teoretski projekt on-line sustava praćenja i smjer budućeg istraživanja u ovom području.

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Experimental analysis of irregularities of metallic surfaces generated by abrasive waterjet

Cited by 37 publications

References 5 publications

An investigation on surface roughness of granite machined by abrasive waterjet

An investigation on surface roughness of granite machined by abrasive waterjet

Surface integrity analysis of abrasive water jet-cut surfaces of friction stir welded joints

On-line monitoring of technological process of material abrasive water jet cutting

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