Taguchi design and response surface methodology based analysis of machining parameters in CNC turning under MQL

Sarıkaya, Murat; Güllü, Abdulkadir

doi:10.1016/j.jclepro.2013.08.040

Cited by 324 publications

(152 citation statements)

References 26 publications

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“…In the literature, it is pointed out that surface roughness is affected negatively by an increase in feed rate and in order to obtain the better surface quality, the feed rate is reduced usually in machining proceses. 6,8,13 In present work, a similar result was detected when the surface roughness decreased with the increasing of feed rate.…”

Section: Analysis Of the Experimental Resultssupporting

confidence: 86%

“…In Equation (8), N is the total number of tests and T dof is the total main factor of the degree of freedom.…”

Section: Determining the Optimum Surface Roughnessmentioning

confidence: 99%

“…Therefore, recently, certain statistical methods like the Taguchi technique, response-surface methodology (RSM), desirability function analysis, ANOVA and grey relational analysis (GRA) have been implemented to optimize and analyze process parameters. [8][9][10][11][12] In the engineering applications and academic studies of experimental design, the Taguchi method is very useful thanks to the orthogonal array that significantly reduces the number of the tests and, in addition, it attempts to eliminate the influence of uncontrollable factors on the test results. The main purpose of the Taguchi technique is to provide quality during the design stage.…”

Section: Introductionmentioning

confidence: 99%

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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 Resultssupporting

confidence: 86%

“…In Equation (8), N is the total number of tests and T dof is the total main factor of the degree of freedom.…”

Section: Determining the Optimum Surface Roughnessmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

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 application of MQCL and MQL definitely improves machinability, extends the cutting wedge life [2] and influences many other factors of the machining process -it reduces the cutting forces [3], improves heat dissipation [4] reduces the machined surface roughness [4 ÷ 6] and influences the process of chip formation [3]. One must not forget, too, the environmental aspect.…”

Section: Introductionmentioning

confidence: 99%

Influence of cooling conditions on the machining process under MQCL and MQL conditions

et al. 2015

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Original scientific paper The paper presents the results of investigation of the influence of conditions of forming emulsion and oil mist on the chip shape and surface roughness of X10CrNi18-8 stainless steel during turning. In the tests, the following machining operations have been compared: dry machining, cooling by the MQCL (Minimal Quantity Cooling Lubricat) method, cooling by the MQL (Minimum Quantity Lubricat) method. The tests have been performed in two stages. In the first stage, the influence of the mass flow of the active medium on the chip shape and on the Ra and Rq roughness parameters of the machined surface have been determined. The purpose of stage two was to determine the influence of the MQL and MQCL method on the selected indices of the machining process as compared to dry machining as a function of variable cutting speed. It has been found that, under MQCL and MQL conditions, the area of formation of elemental chips and ones with the shape of short spirals is wider as compared to dry turning. With increased mass flow of emulsion and oil, tangled chip is formed. Cooling by the MQCL and MQL method results in reduction of the selected roughness parameter values by 2 % to 42 % as compared to dry machining. Keywords: emulsion mist; chip shape; MQCL; MQL; oil mist; surface roughness Utjecaj uvjeta hlađenja na postupak obrade u uvjetima MQCL i MQLIzvorni znanstveni članak U radu se predstavljaju rezultati istraživanja utjecaja uvjeta stvorenih djelovanjem emulzijske i uljne izmaglice na oblik strugotine i površinsku hrapavost nehrđajućeg čelika X10CrNi18-8 tijekom tokarenja. Uspoređivane su sljedeće vrste obrade: na suho, hlađenje MQCL metodom (minimalne količine maziva za hlađenje), hlađenje MQL metodom (minimalne količine maziva). Ispitivanje je provedeno u dva stadija. U prvom je određen utjecaj protoka mase aktivnog medija na oblik strugotina i Ra i Rq parametre hrapavosti obrađivane površine. U drugom je stadiju trebalo odrediti utjecaj MQL i MQCL metode na izabrane indekse postupka obrade u odnosu na obradu na suho kao funkcije promjenljive brzine rezanja. Ustanovljeno je da je, u MQL i MQC uvjetima, područje stvaranja elementarnih strugotina i onih u obliku kratkih spirala šire, u usporedbi s tokarenjem na suho. S povećanim protokom mase emulzije i ulja, stvaraju se zamršene strugotine. Hlađenjem MQL i MQC metodom dolazi do smanjenja vrijednosti izabranih parametara hrapavosti za 2 % do 42 % u usporedbi s obradom na suho.

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“…The methods are applied in various machining processes, such as milling, turning, drilling and grinding [3÷7]. They result in, among others, reduction of the cutting force [6], temperature in the cutting zone [8], extension of the tool life [8,9], as well as reduction of the machined surface roughness [8÷12]. The goal of machining process is to manufacture products with high surface quality at low cost.…”

Section: Introductionmentioning

confidence: 99%

Effect of anti-wear additive on cutting tool and surface layer of workpiece state under MQCL conditions

et al. 2015

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Original scientific paperThe work presents the results of investigation of the influence of anti-wear additive Crodafos EHA-LQ-(MH) added to the emulsion mist on the condition of machined surface of 1.4310 stainless steel after turning. The investigation included the comparison of the following cutting conditions: dry machining, cooling by the MQCL method and cooling by the MQCL method with Crodafos EHA-LQ-(MH). In the paper, the influence of the Anti-Wear (AW) additive on the roughness parameter Ra of the machined surface for various cutting speeds, vc, and mass flow of the emulsion E has been shown. It was found that the MQCL+AW method decreases the Ra parameter values by 14 % to 35 % in comparison with dry cutting and by 17 % in comparison with MQCL method.The machined material and the rake face of the cutting wedge have been subjected to micro X-ray spectroanalysis. Chemical analysis of the cutting wedge and the surface layer of the machined material has been performed. The results show that water dropletts in MQCL method are very good transport facility for active compounds of AW additive that consequently form the dry-film lubricant on the machined surface. Utjecaj dodatka protiv trošenja emulziji na stanje reznog alata i površine obratka u MQCL uvjetima obradeIzvorni znanstveni članak Rad prikazuje rezultate istraživanja utjecaja dodatka emulziji radi manjeg trošenja reznog alata oznake Crodafos EHA-LQ-(MH) na stanje obrađene površine korozijski postojanog čelika 1.4310 nakon tokarenja. Istraživanje sadrži usporedbu sljedećih uvjeta obrade: suha obrada, hlađenje MQCL metodom i hlađenje MQCL metodom s aditivom Crodafos EHA-LQ-(MH). U radu se prikazuje utjecaj AW dodatka emulziji na hrapavost obrađene površine mjeren parametrom Ra pri različitim brzinama rezanja vc i masenim protocima emulzije E. Ustanovljeno je da se MQCL+AW metodom smanjuju vrijednosti Ra parametra za 14 % do 35 % u usporedbi sa suhom obradom i za 17 % u usporedbi s MQCL metodom. Obrađena površina obratka i stražnja površina alata snimana je mikro X-zračenjem i provedena je spektroanaliza. Provedena je i kemijska analiza rezne oštrice i površinskih slojeva obrađene površine. Rezultati pokazuju da su vodene kapljice u MQCL metodi vrlo dobro transportno sredstvo aktivnih sastojaka AW aditiva koje stvaraju suhi sloj maziva na obrađenoj površini.Ključne riječi: dodatci protiv trošenja; hrapavost; korozijski postojani čelik; MQCL (minimalna količina rashladnog podmazivanja); tokarenje

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Taguchi design and response surface methodology based analysis of machining parameters in CNC turning under MQL

Cited by 324 publications

References 26 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 cooling conditions on the machining process under MQCL and MQL conditions

Effect of anti-wear additive on cutting tool and surface layer of workpiece state under MQCL conditions

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