Cryogenic turning of the Ti–6Al–4V alloy with modified cutting tool inserts

Dhananchezian, M.; Kumar, M. Pradeep

doi:10.1016/j.cryogenics.2010.10.011

Cited by 182 publications

(95 citation statements)

References 15 publications

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“…This may be due to a lower cutting temperature, a lower adhesion between the cutting insert and the machined-workpiece surface and a lower tool-wear rate compared to dry and wet cooling conditions. 19 In addition, a reduction in the surface roughness due to wet cooling was determined in comparison with dry machining.…”

Section: Analysis Of the Experimental Resultsmentioning

confidence: 99%

Optimization of the surface roughness by applying the Taguchi technique for the turning of stainless steel under cooling conditions

Sarıkaya¹

2015

Mater. Tehnol.

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This paper presents the optimization of the surface roughness using the Taguchi technique to assess the machinability of the AISI 316Ti steel with PVD coated carbide inserts under different cooling conditions such as dry, conventional (wet) and cryogenic cooling with liquid nitrogen (LN2). Based on the Taguchi L9 (3 3 ) orthogonal-array design, the machinability tests were made utilizing a CNC lathe machine. Test parameters including the cutting speed, the cooling condition and the feed rate were taken and then the surface roughness (Ra) was measured to obtain the machinability indicator. An analysis of variance was performed to determine the importance of the input parameters for the surface roughness. The process parameters were optimized by taking the Taguchi technique into consideration. The Taguchi signal-to-noise ratio was employed with the smaller-the-better approach to obtain the best combination. On the basis of the first-order model, a mathematical model was created using the regression analysis to predict the Ra model. The results indicate that the feed rate is the parameter with the highest effect on the surface roughness and that the other parameters also have a statistical significance. In addition, cryogenic cooling is an alternative method for increasing the surface quality of machined parts. Keywords: AISI 316Ti, cryogenic cooling, machinability, optimization, surface roughness, Taguchi method lanek obravnava optimiranje hrapavosti povr{ine z uporabo Taguchi-jeve metode za oceno obdelovalnosti jekla AISI 316Ti s karbidnimi vlo`ki s PVD-nanosom v razli~nih razmerah ohlajanja, kot je suho, navadno (mokro) in kriogensko hlajenje s teko~im du{ikom (LN2). Preizkusi obdelovalnosti so bili izvr{eni s CNC-stru`nico na osnovi Taguchi-jevega ortogonalnega niza L9 (3 3 ). Izbrani so bili parametri preizkusov, hitrost rezanja, razmere pri ohlajanju in hitrost podajanja, nato pa je bila izmerjena hrapavost povr{ine (Ra) kot pokazatelj obdelovalnosti. Izvr{ene so bile analize variance, da bi ugotovili pomembnost vhodnih parametrov na hrapavost povr{ine. Procesni parametri so bili optimirani z upo{tevanjem Taguchi-jeve tehnike. Uporabljeno je bilo Taguchi-jevo razmerje signal -hrup s pribli`kom~im manj{e tem bolj{e za doseganje najbolj{e kombinacije. Na osnovi modela prvega reda je bil postavljen z uporabo regresijske analize matemati~ni model za napovedovanje Ra. Rezultati ka`ejo, da je hitrost podajanja parameter z najve~jim u~inkom na hrapavost povr{ine, vsi drugi parametri imajo statisti~no zna~ilnost. Dodatno je kriogensko ohlajanje alternativna metoda za pove~anje kvalitete povr{ine stru`enih delov.

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Section: Analysis Of the Experimental Resultsmentioning

confidence: 99%

Optimization of the surface roughness by applying the Taguchi technique for the turning of stainless steel under cooling conditions

Sarıkaya¹

2015

Mater. Tehnol.

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“…The first is cryogenic assisted machining which has been proved on a Ti6Al4V alloy, to decrease the tool wear . Dhananchezian et al ( 2011) measured with this assistance on the same alloy a decrease of the cutting force (35-42%) and of the flank wear (27-39%). A second possible way is the use of a high pressure coolant assistance.…”

Section: Arrazola Et Al (2009) Andmentioning

confidence: 89%

Influence of High-Pressure Coolant Assistance on the Machinability of the Titanium AlloyTi555–3

Braham-Bouchnak

Germain

Morel

et al. 2015

Machining Science and Technology

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is an open access repository that collects the work of Arts et Métiers ParisTech researchers and makes it freely available over the web where possible. ABSTRACTThe originality of this paper is the quantification of productivity gains and the improvement in surface integrity seen for a recent titanium alloy that is seeing increasing use in the aeronautical industry. The Ti555-3 titanium alloy, which is starting to find greater application in the aeronautical field, exhibits certain difficulties in terms of machining. High Pressure Coolant (HPC) assisted turning consists of projecting a high pressure coolant jet between the chip and the tool. Comparisons are made between assisted turning using variable jet pressure and conventional turning (dry and classical lubrication). It is shown that it is possible to improve productivity by using HPC assisted machining. The results highlight good chip fragmentation and a great improvement of tool life with HPC assistance. Surface integrity is also shown to be improved, through surface roughness parameters which decrease, and surface residual stresses which become more compressive. These effects have been attributed to the thermo-mechanical action of eray 49000 Angers, France.the coolant jet resulting in lower cutting forces, lower coefficient of friction and lower temperature in the cutting zone.

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“…Jun in his studies on machining of AISI 1018 steel and Ti6Al4V alloy indicated that refrigeration cooling reduces friction as much as 20 to 30 percent (Jun (2005)). Dhananchezian and Kumar (2011) have investigated the changes in temperature of cutting tool by tungsten carbide cutting tools, at Ti6Zl4V machining by the dry and cryogenic method. Their results indicate that refrigeration cooling can reduce cutting temperature to 60 percent in comparison to dry machining.…”

Section: Investigation Of High-speed Cryogenic Machining Based On Finmentioning

confidence: 99%

Investigation of High-Speed Cryogenic Machining Based on Finite Element Approach

Pashaki

Pouya

2017

Lat. Am. j. solids struct.

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Cryogenic turning of the Ti–6Al–4V alloy with modified cutting tool inserts

Cited by 182 publications

References 15 publications

Optimization of the surface roughness by applying the Taguchi technique for the turning of stainless steel under cooling conditions

Optimization of the surface roughness by applying the Taguchi technique for the turning of stainless steel under cooling conditions

Influence of High-Pressure Coolant Assistance on the Machinability of the Titanium AlloyTi555–3

Investigation of High-Speed Cryogenic Machining Based on Finite Element Approach

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