Machinability study of steels in precision orthogonal cutting

Silva, Ronaldo S.; Hernandes, Antônio Carlos; M’Peko, Jean-Claude

doi:10.1590/s1516-14392012005000071

Cited by 21 publications

(11 citation statements)

References 13 publications

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“…However, as compared to conventional turning process, the values of chip compression ratio

ξ

is lower during electrically assisted turning process. The low values of chip thickness ratio

ξ

(high

ϕ

values) mean low shear strain in the shear plane [28]. Since chip compression ratio

ξ

is a measure of the plastic deformation of materia, which decreases with the increase in cutting speed [3], an increase in cutting speed leads to a decrease of plastic deformation in chip formation zone.…”

Section: Resultsmentioning

confidence: 99%

“…In addition, shear plane angle

ϕ

increases with the increase in cutting feed and decreases with the increase in cutting speed. The high values of chip compression ratio

ξ

mean large amount of strain in shear plane [28]. An increase in the cutting speed leads to an increase in the temperature of the chip so its plastic deformation increases [3].…”

Section: Resultsmentioning

confidence: 99%

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Influence of the Regime of Electropulsing-Assisted Machining on the Plastic Deformation of the Layer Being Cut

et al. 2018

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In this article, the influence of electropulsing on the machinability of steel S235 and aluminium 6060 has been studied during conventional and electropulsing-assisted turning processes. The machinability indices such as chip compression ratio ξ, shear plane angle ϕ and specific cutting energy (SCE) are investigated by using different cutting parameters such as cutting speed, cutting feed and depth of cut during electrically-assisted turning process. The results and analysis of this work indicated that the electrically-assisted turning process improves the machinability of steel S235, whereas the machinability of aluminium 6060 gets worse. Finally, due to electropluses (EPs), the chip compression ratio ξ increases with the increase in cutting speed during turning of aluminium 6060 and the SCE decreases during turning of steel S235.

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“…However, as compared to conventional turning process, the values of chip compression ratio

ξ

is lower during electrically assisted turning process. The low values of chip thickness ratio

ξ

(high

ϕ

values) mean low shear strain in the shear plane [28]. Since chip compression ratio

ξ

Section: Resultsmentioning

confidence: 99%

“…In addition, shear plane angle

ϕ

increases with the increase in cutting feed and decreases with the increase in cutting speed. The high values of chip compression ratio

ξ

mean large amount of strain in shear plane [28]. An increase in the cutting speed leads to an increase in the temperature of the chip so its plastic deformation increases [3].…”

Section: Resultsmentioning

confidence: 99%

Influence of the Regime of Electropulsing-Assisted Machining on the Plastic Deformation of the Layer Being Cut

et al. 2018

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show abstract

“…The chip compression ratio ξ can be considered as a measure of plastic deformation of material [4]. The high values of chip compression ratio (low φ values) mean large amount of strain in the shear plane [13]. So the values of chip compression ratio and shear plane angle give an intensive amount of plastic deformation at the shear zone.…”

Section: Current Density and Cutting Configurationmentioning

confidence: 99%

Electroplastic cutting influence on power consumption during drilling process

Hameed

Rojas

Egea

et al. 2016

Int J Adv Manuf Technol

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The aim of this study is to report the use of non-conventional material removal process technique. It was found that electropulses (EPs) assisted drilling process improves the material machinability based on the eletroplastic influence. The influence of EPs in drilling process is studied by combining different feed rates, drills diameters and current densities in 7075 aluminium and 1045 carbon steel. The results show that the electrically assisted drilling process improves material machinability, decreases the specific cutting energy up to 27% in aluminium and 17% in steel.

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“…One of the most commonly analyzed modes of cutting is the orthogonal cutting (two dimensional cutting), in which the depth of the cut is constant and the cutting edge is a straight line, perpendicular to the direction of the relative motion between the edge and the specimen [3]. Nearly all the energy consumed in plastic deformation is converted into heat, which raises the temperature in the cutting area.…”

Section: Introductionmentioning

confidence: 99%

“…12,19210 Bor, Serbia 2 Faculty of Mechanical Engineering, University of Niš, A. Medvedeva 14, 18000 Niš, Serbia 3 Faculty of Engineering, University of Kragujevac, Sestre Janić 6, 34000 Kragujevac, Serbia…”

mentioning

confidence: 99%

Application of response surface methodology and fuzzy logic based system for determining metal cutting temperature

Tanikić¹,

Marinković²,

Manić³

et al. 2016

Bulletin of the Polish Academy of Sciences Technical Sciences

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Abstract. The heat produced in metal cutting process has negative influence on the cutting tool and the machined part in many aspects. This paper deals with measurement of cutting temperature during single-point dry machining of the AISI 4140 steel, using an infrared camera. Various combinations of cutting parameters, i.e. cutting speed, feed rate and depth of cut lead to different values of the measured cutting temperature. Analysis of the measured data should explain the trends in temperature changes depending on changes in the cutting regimes. Furthermore, the temperature data is modelled using response surface methodology and fuzzy logic. The models obtained should determine the influence of cutting regimes on cutting temperature. The main objective is the reduction of cutting temperature, i.e. enabling metal cutting process in optimum conditions. Key words: machining, cutting temperature, infrared thermography, response surface methodology, fuzzy logic.Application of response surface methodology and fuzzy logic based system for determining metal cutting temperature Total amount of heat produced in metal cutting process can be calculated as a sum of heat produced by the three mentioned sources:where: Q -total amount of generated heat, Q S 1 -amount of heat generated by heat source S 1 , Q S 2 -amount of heat generated by heat source S 2 , Q S 3 -amount of heat generated by heat source S 3.The heat balance during metal cutting process can be expressed as follows:where: Q 1 -amount of heat carried away in the chips, Q 2 -amount of heat remaining in the cutting tool, Q 3 -amount of heat passing into the work-piece, Q 4 -amount of heat radiated to the surrounding air.

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Machinability study of steels in precision orthogonal cutting

Cited by 21 publications

References 13 publications

Influence of the Regime of Electropulsing-Assisted Machining on the Plastic Deformation of the Layer Being Cut

Influence of the Regime of Electropulsing-Assisted Machining on the Plastic Deformation of the Layer Being Cut

Electroplastic cutting influence on power consumption during drilling process

Application of response surface methodology and fuzzy logic based system for determining metal cutting temperature

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