Investigation of surface roughness in laser-assisted hard turning of AISI 4340

Khatir, Farzad Ahmadi; Sadeghi, Mohammad; Akar, Samet

doi:10.1016/j.matpr.2020.09.480

Cited by 10 publications

(4 citation statements)

References 11 publications

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“…In LAT the impact of cutting and heating variables on surface roughness, when employed on AISI 4340 hard steel. According to statistical research, laser power (14.08 %), depth of cut (10.12 %), and cutting speed (5.85 %) had the greatest influence on surface roughness [25]. In ANFIS, Gaussmf was used for training by input data patterns, and the study shows that ANFIS is the most effective method for predicting varied cutting qualities during hybrid machining operations [26].…”

Section: Laser Assisted Turning Processmentioning

confidence: 99%

A Novel Approach of Heat Assisted Parallel Turning Process

Mishra,

Kalidasan,

Yadav

2023

KEM

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Hard materials are widely used in industry due to qualities such as strong fatigue strength and the ability to maintain strength at a high temperature. Still forming certain raw materials into the appropriate shapes is the challenge in subtractive manufacturing industries and these materials are categorized as hard to machine material. To solve this problem Heat Assisted Machining (HAM) is an emerging and most dominating method, which requires an external heat source subjected to the workpiece either before or during the machining to increase the ductility. As a result, the workpiece yield and shear strength are reduced. This is an advanced technique to enhance the tool’s life, and productivity. The present paper provides in-depth knowledge of thermal assisted machining process where various heat sources are used like laser, plasma, LPG, Induction heating and etc. The comparison analysis between various heat sources is made and their impact on various parameters like tool wear, material removal rate, surface roughness, stability and etc. were illustrated and provide the novel approach for selecting the correct heat-assisted technique which is used for turning process in order to increase the machining process.

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Section: Laser Assisted Turning Processmentioning

confidence: 99%

A Novel Approach of Heat Assisted Parallel Turning Process

Mishra,

Kalidasan,

Yadav

2023

KEM

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“…Bunun yanında uygulanan soğutma yöntemi ve kesici takım kaplaması yüzey pürüzlülüğüne önemli derecede etki eder [11]. Soğutma yöntemleri gibi Isı Destekli İşleme (IDİ) yöntemi de yüzey kalitesini geliştirmek için kullanılabilir [12][13][14]. IDİ uzun yıllardır uygulanan bir yöntemdir [15].…”

Section: Gi̇ri̇ş (Introduction)unclassified

“…Ön ısıtmanın sağladığı olumlu etki talaş kaldırma oranının (TKO) artmasını sağlar [19]. IDİ yönteminde sertleştirilmiş parçalar karbür kesici takımlar ile işlenebilir [12] ve taşlama gibi ilave operasyonlara gerek *Sorumlu Yazar (Corresponding Author) e-posta : atakanugras@eskisehir.edu.tr kalmayabilir [1]. IDİ yönteminde lazer [19,20], plazma [13], indüksiyon akımı [21] ve oksi-gaz alevi [22] enerji kaynağı olarak kullanılmaktadır.…”

Section: Gi̇ri̇ş (Introduction)unclassified

AISI 4340 Çeliğinin Isı Destekli Tornalanmasının Boyutsal Kararlılık ve Yüzey Pürüzlülüğüne Etkilerinin Deneysel ve İstatistiksel İncelenmesi

Uğraş,

Kafkas

2024

Politeknik Dergisi

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Bu çalışmada iş malzemesinin boyutsal kararlılık özelliklerini ve yüzey kalitesini iyileştirmek için ısı destekli işleme (IDİ) yöntemi kullanılmıştır. Çevrimiçi ölçümler yapılarak kesme için harcanan güç (Pc, kW) ve iş malzemesi sıcaklığı (Tmr, °C) belirlenmiştir. Çevrimdışı ölçümlerde iş parçası çapı ölçülerek çap ölçüsündeki sapma (ÇÖS, µm) değeri belirlenmiş ve yüzey pürüzlülüğü (Ra, µm) ölçülmüştür. IDİ yönteminde kesme için harcanan güç (Pc) değerinde maksimum %14,43 azalma sağlanmıştır. Aynı kesme şartlarında ÇÖS değeri konvansiyonel işlemede 80 µm olarak gerçekleşirken, IDİ yönteminde 50 µm’ a düşmektedir. Yüzey pürüzlülüğü (Ra, µm) konvansiyonel işlemede 2,66 µm olarak gerçekleşirken, IDİ yönteminde 2,42 µm’ a düşmektedir. İstatistiksel analiz sonuçlarına göre ÇÖS ve yüzey pürüzlülüğü üzerinde en etkili işlem parametresi ilerleme oranı (f) olmuştur. Ancak IDİ yönteminin her ikisi üzerinde önemli bir etkiye sahip olduğu görülmüştür. Ön ısıtma, kesme ile eş zamanlı yapılamadığı için üretilen ısı iş malzemesi hacminde genleşmeye neden olmaktadır. Bu durum TIG esaslı IDİ yöntemini kullanarak hassas boyutsal toleranslara sahip parçaların işlenmesini zorlaştırır.

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“…The influence of laser power on the heat and surface integrity of the grinding wheel was explored, and the wear mode and mechanism of diamond particles and bonding materials were analyzed by SEM detection and energy dispersive spectroscopy analysis. Khatir et al 17,18 investigated the effect of cutting parameters and laser parameters on the surface roughness and surface integrity of the workpiece during LAC of AISI 4340 hard steel. The results showed that laser power and feed rate were important parameters that determine surface integrity; determining reasonable process parameters could reduce the damage caused by heat diffusion of the laser into the workpiece and greatly improve the advantages of LAC.…”

Section: Introductionmentioning

confidence: 99%

A study on the temperature characteristics in laser-assisted cutting of cemented carbide

Zhang,

Wang,

2023

Proceedings of the Institution of Mechanical Engineers, Part C:

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To investigate the temperature characteristics of Laser-Assisted Cutting (LAC) in relation to cemented carbide, a theoretical model for LAC temperature was established based on heat conduction theory. Finite element simulations were conducted to analyze the surface temperature distribution and internal temperature distribution of cemented carbide during the LAC process. And an empirical formula for the LAC temperature of cemented carbide was obtained through temperature testing, and the model was experimentally validated. In addition the influences of the cutting temperature on the material machinability were experimentally studied. The results showed that the factors affecting cutting temperature ranked in order of importance are laser power, laser traversal speed, laser spot diameter, distance between cutting edge and spot center, cutting depth, and cutting speed. The cutting temperature trends were consistent under different processing parameters. In comparison with traditional cutting, the LAC method reduced the radial thrust force (Fx), tangential force (Fy), and axial thrust force (Fz) by 20.00, 27.14, and 53.19% respectively. The surface roughness of the workpiece was reduced by 50%, resulting in a flat and smooth surface with improved machinability.

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Investigation of surface roughness in laser-assisted hard turning of AISI 4340

Cited by 10 publications

References 11 publications

A Novel Approach of Heat Assisted Parallel Turning Process

A Novel Approach of Heat Assisted Parallel Turning Process

AISI 4340 Çeliğinin Isı Destekli Tornalanmasının Boyutsal Kararlılık ve Yüzey Pürüzlülüğüne Etkilerinin Deneysel ve İstatistiksel İncelenmesi

A study on the temperature characteristics in laser-assisted cutting of cemented carbide

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