The Effect of Mechanical Properties and the Cutting Parameters on Machinability of AISI 5140 Steel Cooled at High Cooling Rates After Hot Forging

Özlü, Barış; Demir, Halil; Türkmen, Mustafa

doi:10.2339/politeknik.479345

Cited by 9 publications

(4 citation statements)

References 20 publications

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“…40X steel (according to GOST-4543 standard of the Russian Federation) is an alloy steel commonly used to make parts such as gears, worms, splined shafts, etc. If the study on turning the continuity surface of 40X steel or equivalent steels has been done in many studies [1][2][3][4][5][6], up to the present time, it can be affirmed that there are no published studies on turning the interrupted surface of this steel.…”

Section: Introductionmentioning

confidence: 99%

Effect of Cutting Parameters on the Surface Roughness and Roundness Error When Turning the Interrupted Surface of 40X Steel Using HSS-TiN Insert

Trung¹

2022

Applied Engineering Letters

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This paper presents a research on investigating the effect of cutting parameters on the surface roughness (R a ) and roundness error (RE) when turning the interrupted surface of 40X steel. The TiN coated high speed steel (HSS-TiN) inserts were used in this research. The cutting parameters include cutting velocity, feed rate, and depth of cut. The Box-Behnken method was applied to develop an experimental matrix with fifteen experiments. The influences of cutting parameters on R a and RE were found using Pareto chart. Two equations that presented the relationship between Ra, RE and cutting parameters were established. These two equations were used to predict R a and RE. Genetic algorithm (GA) was also used to determine the optimal values of cutting parameters to simultaneously ensure the minimum values of R a and RE. The further works of this study was also mentioned in this paper.

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Section: Introductionmentioning

confidence: 99%

Effect of Cutting Parameters on the Surface Roughness and Roundness Error When Turning the Interrupted Surface of 40X Steel Using HSS-TiN Insert

Trung¹

2022

Applied Engineering Letters

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“…Burada esas kesme kuvveti (Fc), pasif kuvvetin (Fp) dört katı ve ilerleme kuvvetinin (Ff) iki katı olduğu görülmektedir [19]. [22]. Bununla birlikte düşük kesme hızlarında daha büyük Fc değerlerinin oluşması, kesici takım ile iş parçası arasındaki daha yüksek sürtünme katsayısı ile ilişkilidir [23].…”

Section: şEkil 2 Deney Düzeneğinin şEmatik Gösterimi (Schematic Representation Of the Experimental Setup)unclassified

Sleipner soğuk iş takım çeliğinin tornalanmasında kesme parametrelerinin kesme kuvveti, yüzey pürüzlülüğü ve talaş şekli üzerine etkisinin incelenmesi

Özlü

2021

Gazi Üniversitesi Mühendislik Mimarlık Fakültesi Dergisi

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Processing with turning method of sleipner cold work tool steel  Investigation of the effects of cutting parameters on cutting force components  Determination of optimal cutting parameters for minimum cutting force and surface roughness and examination of formed chip shapes Sleipner cold work tool steel has high abrasion and compression strength, high toughness, high dimensional stability during heat treatment, weldability and easy machinability. Sleipner steel is widely used in plastic injection and sheet metal molds, in manufacturing of plastic and punching blades. In addition, the fact that it is suitable for surface coating techniques such as TiN, CrN by PVD method has led to its widespread use in industrial applications. Due to the high surface quality and dimensional stability required in the mold industry, critical machining operations are preferred. The demand for high surface quality and dimensional stability after machining it is important to predetermine cutting parameters. Since high surface quality and dimensional stability are desired after machining, it is necessary to determine the cutting parameters in advance. It is therefore important to determine machining parameters such as appropriate cutting speed, feed rate and cutting tool geometry. Figure A. Variation of main cutting force and surface roughness depending on cutting speed and feed ratePurpose: In this study, Sleipner cold work tool steel was turned using different cutting parameters. The effects of cutting parameters on cutting force components and main cutting force, chip shapes and surface roughness were investigated experimentally. Theory and Methods:A KISTLER 9257B type piezoelectric dynamometer, which can measure the cutting force components at the same time, was used for the measurement of the cutting forces in the turning experiments. Signals from the dynamometer were transmitted with the KISTLER 5070A multichannel amplifier. Measured cutting force components were converted to numerical values with DynoWare software. At the end of the turning tests, the roughness values of the machined surfaces were measured with Mahr Perthometer M1. The abrasion of the cutting tool was examined by scanning electron microscope (SEM). The insize ISM-PM200SB digital microscope was used for the examination of chip shapes. Results:Cutting force components increased with increasing amount of feed rate and cutting force components decreased with increasing cutting speed. The lowest cutting force was obtained at 359,6 N in 100 m/min cutting speed and 0,1 mm/rev feed rate. The highest cutting force was measured at 921,3 N in 50 m/min cutting speed and 0,3 mm/rev feed rate. Among the machined surfaces the lowest surface roughness was obtained as 0.97 µm at 150 m/min cutting speed and 0.1 feed rate. The highest surface roughness was found to be 5.12 µm at 50 m/min cutting speed and 0.3 mm/rev feed rate. In the parameters in which the lowest cutting force and surface roughness were measured, chip shapes were similar to spiral type chip shape. Conclusion:In ...

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“…Hem deneysel hem de nümerik analizlerde ilerleme miktarının artması ile Fc değerlerinin arttığı belirlenmiştir. Literatürde bu durum çoğunlukla ilerleme miktarındaki artışa bağlı olarak talaş kesitinin artması ile talaşın deforme edilmesi için gerekli olan enerjinin artması ile açıklanmaktadır [28][29][30]. Nümerik analizler sonucu elde edile talaş kalınlığı değerleri ve Şekil 10'da yer alan talaş oluşumu görüntüleri bu durumu doğrulamaktadır.…”

Section: şEkilunclassified

Tornalama İşleminde Kesme kuvveti ve Talaş Oluşumu Üzerinde Kesme Parametrelerinin Etkisinin Deneysel ve Nümerik Analizi

Akgün¹,

Demir²

2021

El-Cezeri Fen Ve Mühendislik Dergisi

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Bu çalışmada, kaplamasız kesici takımlar kullanılarak Inconel 625 süperalaşımının tornalanmasında oluşan esas kesme kuvveti (Fc) üzerinde kesme parametrelerinin etkisi deneysel ve nümerik analizler ile değerlendirilmiştir. Tornalama deneyleri, beş farklı kesme hızında (60, 90, 120, 150 ve 180 m/dak), üç farklı ilerleme miktarında (0,12 0,18 ve 0,24 mm/dev) ve üç farklı talaş derinliğinde (0,5 1 ve 1,5 mm) kuru kesme şartlarında CNC torna tezgahında gerçekleştirilmiştir. Esas Kesme kuvvetinin (Fc) ölçülmesinde, Kistler 9257B tipi dinamometre ve ekipmanları kullanılmıştır. Esas kesme kuvvetinin (Fc) sonlu eleman yöntemiyle modellemesi Deform 3D yazılımı kullanılarak yapılmıştır. En düşük esas kesme kuvveti değeri, 180 m/dak kesme hızında, 0,12 mm/dev ilerleme miktarında ve 0,5 mm talaş derinliğinde yapılan deneylerde 120 N olarak ölçülmüştür. Deneysel ve nümerik analiz sonuçları karşılaştırıldığında, deneysel olarak ölçülen Fc değerleri ile nümerik analizler sonucu elde edile Fc değerleri arasında yaklaşık olarak %12 oranında bir sapma tespit edilmiştir.

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The Effect of Mechanical Properties and the Cutting Parameters on Machinability of AISI 5140 Steel Cooled at High Cooling Rates After Hot Forging

Abstract: Bu makaleye şu şekilde atıfta bulunabilirsiniz(To cite to this article): Özlü B., Demir H. ve Türkmen M., "The effect of mechanical properties and the cutting parameters on machinability of AISI 5140 steel cooled at high cooling rates after hot forging",

Cited by 9 publications

References 20 publications

Effect of Cutting Parameters on the Surface Roughness and Roundness Error When Turning the Interrupted Surface of 40X Steel Using HSS-TiN Insert

Effect of Cutting Parameters on the Surface Roughness and Roundness Error When Turning the Interrupted Surface of 40X Steel Using HSS-TiN Insert

Sleipner soğuk iş takım çeliğinin tornalanmasında kesme parametrelerinin kesme kuvveti, yüzey pürüzlülüğü ve talaş şekli üzerine etkisinin incelenmesi

Tornalama İşleminde Kesme kuvveti ve Talaş Oluşumu Üzerinde Kesme Parametrelerinin Etkisinin Deneysel ve Nümerik Analizi

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