Influence of slab milling process parameters on surface integrity of HSLA: a multi-performance characteristics optimization

Goel, Pankul; Khan, Zahid A.; Siddiquee, Arshad Noor; Kamaruddin, Shahrul; Gupta, Rajeev

doi:10.1007/s00170-011-3763-y

Cited by 28 publications

(27 citation statements)

References 12 publications

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“…Maintaining SI is one of the most critical requirements (Kundrak, Mamalis, Gyani, & Bana, 2011;Saini, Ahuja, & Sharma, 2012;Umbrello, Jayal, Caruso, Dillon, & Jawahir, 2010). In order to maintain a high production rate with an acceptable quality level and SI of the machined parts, it is important to select the optimum combination of WEDM parameters such as pulse ontime, pulse off-time, current, and feed rate as these parameters have impact on multiperformance characteristics like surface roughness, micro-hardness, and microstructure, which are indeed constituents of SI (Goel, Khan, Siddiquee, Kamaruddin, & Gupta, 2012). Among the several SI parameters, surface roughness and micro-hardness are very important as they correlate with the surface profiles in order to better characterize the different machining processes.…”

Section: Introductionmentioning

confidence: 99%

Investigations on the effect of wire EDM process parameters on surface integrity of HSLA: a multi-performance characteristics optimization

Khan

Siddiquee

et al. 2014

Production & Manufacturing Research

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Surface roughness (R a ) and micro-hardness (μh) are two important constituents of the surface integrity (SI) of the machined component. In Wire Electric Discharge Machining (WEDM), the machining factors that affect SI are generally the pulse ontime, pulse off-time, current, etc. This paper presents a study that investigates the effect of the WEDM parameters on the surface roughness average and the microhardness of the High Strength Low Alloy steel (ASTM A572-grade 50). Nine experimental runs based on an orthogonal array of Taguchi method are performed and grey relational analysis (GRA) method is subsequently applied to determine an optimal WEDM parameter setting. The SI parameters i.e. surface roughness and microhardness are selected as the quality targets. An optimal parameter combination of the WEDM process is obtained using GRA. By analyzing the grey relational grade matrix, the degree of influence for each controllable process factor onto individual quality targets can be found. The pulse off-time is found to be the most influential factor for both the surface roughness and the micro-hardness. Further, the results of the analysis of variance reveals that the pulse off-time is the most significantly controlled factor for affecting the SI in the WEDM, according to the weighted sum grade of the surface roughness and the micro-hardness.

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Section: Introductionmentioning

confidence: 99%

Investigations on the effect of wire EDM process parameters on surface integrity of HSLA: a multi-performance characteristics optimization

Khan

Siddiquee

et al. 2014

Production & Manufacturing Research

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“…In order to obtain optimum surface integrity of the machined component, surface roughness should be minimum and at the same time there should be minimum deviation in the micro-hardness from the micro-hardness of the job material i.e. target value of the micro-hardness should be achieved [6]. The use of response surface optimization helps to find the optimal values of cutting parameters in order to minimize the surface roughness and to get the target value of the micro-hardness during the hard turning process.…”

Section: Optimizations For Surface Integritymentioning

confidence: 99%

“…In metal cutting, cutting parameters such as cutting speed, feed rate, depth of cut and cutting fluid are reported to affect multi performance characteristics like surface roughness, strain hardening, micro-hardness and microstructure which are indeed constituents of SI and hence, it is important to select optimum combination of these parameters [6]. Among the several SI parameters, surface roughness (R a ) and the micro-hardness (µH) are very important as they correlate with the surface profiles in order to better characterize the different machining processes.…”

Section: Introductionmentioning

confidence: 99%

RSM Based Investigations on the Effects of Cutting Parameters on Surface Integrity during Cryogenic Hard Turning of AISI 52100

Shihab

Khan

Siddiquee

2015

Journal for Manufacturing Science and Production

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Effect of cryogenic hard turning parameters (cutting speed, feed rate, and depth of cut) on surface roughness (R a ) and micro-hardness (µH) that constitute surface integrity (SI) of the machined surface of alloy steel AISI 52100 is investigated. Multilayer hard surface coated (TiN/TiCN/Al 2 O 3 /TiN) insert on CNC lathe is used for turning under different cutting parameters settings. RSM based Central composite design (CCD) of experiment is used to collect data for R a and µH. Validity of assumptions related to the collected data is checked through several diagnostic tests. The analysis of variance (ANOVA) is used to determine main and interaction effects. Relationship between the variables is established using quadratic regression model. Both R a and µH are influenced principally by the cutting speed and the feed rate. Model equations are found to predict accurate values of R a and µH. Finally, desirability function approach for multiple response optimization is used to produce optimum SI.

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“…Therefore, if a particular comparability sequence is more important than the other comparability sequence for the reference sequence, then the Grey relational grade for that comparability sequence and the reference sequence is higher than the other Grey relational grade. 31,32 With this technique, both the comparability sequence and the reference sequence are of equal preference. Table 6 shows the values of MRRs and their S/N ratios.…”

Section: Grey Relational Analysis (Gra)mentioning

confidence: 99%

Optimization of the parameters for the surfactant-added EDM of a Ti–6Al–4V alloy using the GRA-Taguchi method

Kolli¹,

Kumar²

2016

Mater. Tehnol.

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In this research, the Taguchi technique was applied to determine the optimum process parameters for the electrical discharge machining (EDM) of a titanium alloy with an added surfactant. The surfactant added to the dielectric fluid played an important role in the discharge gap, increasing the conductivity and suspending debris particles in the dielectric fluid, reducing abnormal discharge conditions of the machine and improving the overall machining efficiency. The performance characteristics were the material-removal rate (MRR) and the surface roughness (SR), which were experimentally explored for various input parameters such as the discharge current, the pulse-on time, the pulse-off time and the surfactant concentration in the dielectric fluid. The optimum setting of the parameters was verified through planned and conducted experiments and analysed using the Taguchi technique. Further, a multi-response optimisation was carried out, maximising the MRR and minimising the SR, using the Grey relational analysis (GRA). It was observed that the pulse-on time, the discharge current, the pulse-off time and the surfactant concentration contribute significantly to the multi-response optimisation. Conformation test results showed an improvement in the MRR by 20.69 % and in the SR by 11.09 %. A scanning-electron-microscope (SEM) analysis was conducted to study the recast layer that evolved during the electrical discharge machining process and the topography of surfaces was also observed. Keywords: surfactant, Ti-6Al-4V alloy, Grey-Taguchi method, material-removal rate, surface roughness, recast-layer thickness V~lanku je uporabljena Taguchi metoda za dolo~anje optimalnih parametrov procesa povr{insko aktivne elektroerozije (EDM) na titanovi zlitini. Povr{insko aktivne snovi, dodane dielektri~ni teko~ini, igrajo pomembno vlogo pri razelektritveni re`i, kar pove~a prevodnost in ustavi delce v dielektri~ni teko~ini, zmanj{a neobi~ajne razelektritve pri obdelavi in na splo{no pove~a u~inkovitost obdelave. Zna~ilnosti zmogljivosti sta hitrost odstranjevanja materiala (MRR) in hrapavost povr{ine (SR), ki sta bili eksperimentalno uporabljeni za razli~ne vhodne parametre, kot je: tok razelektritve, trajanje impulza, trajanje prekinitve in koncentracija povr{insko aktivne snovi v dielektri~ni teko~ini. Optimalna postavitev parametrov je bila preizku{ena z na~rtovanimi preizkusi in analizirana s Taguchi metodo. Izvr{ena je bila optimizacija z ve~odgovori, to je maksimiranje MRR in minimiziranje SR s pomo~jo uporabe Grey relacijske analize (GRA). Ugotovljeno je, da tok razelektritve, trajanje pulza,~as brez pulza in koncentracija povr{insko aktivne snovi, mo~no prispevajo k optimizaciji. Rezultati potrditvenih preizkusov so pokazali izbolj{anje MRR za 20,69 % in SR za 11,09 %. Z vrsti~nim elektronskim mikroskopom (SEM) je bila izvr{ena analiza (SEM) pretaljenega sloja, ki se je razvil med postopkom elektroerozije, opazovana pa je bila tudi topografija povr{ine. Klju~ne besede: povr{insko aktivne snovi, Ti-6Al-4V zlitina, Grey-Taguc...

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Influence of slab milling process parameters on surface integrity of HSLA: a multi-performance characteristics optimization

Cited by 28 publications

References 12 publications

Investigations on the effect of wire EDM process parameters on surface integrity of HSLA: a multi-performance characteristics optimization

Investigations on the effect of wire EDM process parameters on surface integrity of HSLA: a multi-performance characteristics optimization

RSM Based Investigations on the Effects of Cutting Parameters on Surface Integrity during Cryogenic Hard Turning of AISI 52100

Optimization of the parameters for the surfactant-added EDM of a Ti–6Al–4V alloy using the GRA-Taguchi method

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