Machining With Cryogenically Treated Carbide Cutting Tool Inserts

Deshpande, R.G.; Venugopal, K.

doi:10.1016/j.matpr.2017.11.288

Cited by 14 publications

(4 citation statements)

References 3 publications

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“…Many researchers stated that CTI showed better wear resistance when compared with the UI. 8,9,[11][12][13][14][15]20,[24][25][26] In parallel with the previous situation, Bal 10 reported that the Fc in CTI was lower than the UI. It was explained that less distortion happened at the cutting edge of the CTI in comparison to the UI.…”

Section: Mean Fc and Vibrationmentioning

confidence: 61%

“…The results showed that cryo-treated uncoated insert was better than untreated one at such test parameters as tool life and tool wear under different cutting speeds. 12 In addition to previous researches, the importance of holding time was examined for deep cryo-treated inserts. € Ozbek et al applied deep CHT at various holding times as 12, 24, 36, 48, and 60 hours for cutting inserts to investigate cutting tool wear occurring due to cutting speed and machining times.…”

Section: Introductionmentioning

confidence: 99%

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Comparative investigations of cryo-treated and untreated inserts on machinability of AISI 1050 by using response surface methodology, ANOVA and Taguchi design

Baday

Ersöz

2021

Proceedings of the Institution of Mechanical Engineers, Part C:

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This study aims to focus on the machinability of the AISI 1050 workpieces with cutting inserts, treated under deep cryogenic heat (−146 °C), and with untreated ones, and to investigate the optimization of cutting parameters and heat treatment conditions for surface roughness and cutting force by using Taguchi mixed design and Response Surface Methodology (RSM). The machining experiment was performed on a CNC lathe with machining parameters such as three feed rates, three cutting speeds and a constant depth of cut under dry condition and with heat treatment condition. As is known, Taguchi design L18 (32 21) consists of three factors; cutting parameters with each one of three levels and heat treatment condition with two levels. The results of machining tests were evaluated considering surface roughness, vibrations and cutting force. Furthermore, chip morphology and wear led by cryo-treated and untreated inserts were detected with the aid of a scanning electron microscope. The results demonstrated that cryo-treated (CTI) insert had lower tool wear, vibration, and cutting force than untreated insert (UI) in all conditions. In aspect of chip morphology, untreated inserts had bigger and larger serrations than the treated inserts. In addition, according to Taguchi S/N ratio, optimal cutting parameters and heat treatment conditions were obtained from CHT1, V3, and f1 for the Fc and from CHT1, V1, and f1 for the Ra, respectively. Also, the most significant control factors on surface roughness and cutting force were feed rate depending on ANOVA results and RSM. Validation test results demonstrated that RSM and Taguchi mixed design calculated the cutting force (R2RSM (CTI and UI) = 99.99% and R2Tag. = 99.95%) and surface roughness (R2RSM (CTI) = 99.76%, R2RSM (UI) = 99.59% and R2Tag. = 99.12%). Therefore, RSM and Taguchi mixed design predicts highly well match experimental data with prediction data.

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Section: Mean Fc and Vibrationmentioning

confidence: 61%

Section: Introductionmentioning

confidence: 99%

Comparative investigations of cryo-treated and untreated inserts on machinability of AISI 1050 by using response surface methodology, ANOVA and Taguchi design

Baday

Ersöz

2021

Proceedings of the Institution of Mechanical Engineers, Part C:

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“…The authors claimed that the presence of cobalt in the cutting insert experience transformation of phase when subjected to DCT. In another work by Deshpande et al [10] revealed an improvement in hardness due to the presence of cobalt after CT to carbide insert. Gill et al [11] also claimed CT performed better in continuous and interrupted machining operation.…”

Section: Introductionmentioning

confidence: 93%

Performance Evaluation of Cryogenic Treated and Untreated Carbide Inserts during Machining of AISI 304 Steel

Patil

Gopalakrishna²,

Sangmesh³

2020

IJAME

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The cutting tool in the machining process plays an important role as it acts on the working material. There are a few methodologies have been persued to improve tool life, for example traditional cooling, single layer coating, multilayer coating, heat treatment process, nitrogen cooling and latest being the cryogenic treatment which reported a significant improvement in cutting tool life, chip morphology, reduction in heat generation. Hence, the cryogenic treatment is emerged as the sustainable machining process. This paper presents machining of AISI 304 steel using both cryogenic treated (CT) and untreated (UT) cutting tool insert. The commercially available uncoated carbide insert has been cryogenically treated at -196°C for 24 hours soaking period. The machining test has been conducted under four different cutting speeds. The material characterization of cutting insert is studied by using scanning electron microscopy (SEM), hardness test, and microscopic image analysis has been carried out before and after cryogenic treatment. The cutting tool performance is assessed in terms of of wear, cutting temperature, chip morphology, surface roughness under the influence of cryogenic machining and the results are contrast with UT one. The exploratory findings reveals that the deep cryogenic treatment (DCT) with 24 hours soaking period, performed better wear resistance and improved surface roughness of the cutting tool. Also considerable reduction in the flank wear, crater wear, cutting temperature is obtained and found improved chip morphology.

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“…The cryogenic process involves the steps of cooling the material at room temperature to -273 °C following the quenching process, keeping the medium in this environment until the structural change occurs throughout the material and then allowing it to warm to room temperature. [13][14][15].…”

Section: Traditional Heat Treatment Of M2mentioning

confidence: 99%

Effects of Different Cryogenic Treatments on Drilling Performance of HSS Drills

Avci

Soyusinmez²,

Ertuğrul

2020

Eskişehir Technical University Journal of Science and Technology a - Applied Sciences and Engineering

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Cryogenic treatment has been widely used in recent years to improve the properties of cutting tool materials. This process has been reported in the literature as it provides significant contributions to wear resistance and tool life of tool steels. This study presents the differences in tool performance between untreated and cryogenically treated M2 high speed steel (HSS) drill bits in terms of their tool wear, tool life, hardness and chip formation properties. Also, the effects of two different tempering temperatures (200 o C and 250 o C) in cryogenic treatment on tool performance are discussed. Drilling performances were studied on different workpieces of SAE 1050, lamellar cast iron and sphero cast iron, and the type of wear is characterized by a high resolution camera. Moreover, fracture tests were performed on a steel workpiece using a constant drilling speed of 1100 m/min and a feed rate of 0.5mm/rev. The microstructures of the samples were characterized using optical microscopy and SEM. The Vickers microhardness tests of the samples were performed using 100 g load. Microstructural studies showed that cryogenically treated samples exhibit better microstructure with finer and more homogeneous carbides which yields better tool wear and hardness properties. In paralel, cryogenically treated drills showed improved tool life than untreated drills during fracture tests. When tempering temperatures are compared, tempering at 250 °C resulted in better performance than 200 °C of tempering temperature. Also, the reduction in diameter values during drilling tests were consistent with the tool life tests.

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Machining With Cryogenically Treated Carbide Cutting Tool Inserts

Cited by 14 publications

References 3 publications

Comparative investigations of cryo-treated and untreated inserts on machinability of AISI 1050 by using response surface methodology, ANOVA and Taguchi design

Comparative investigations of cryo-treated and untreated inserts on machinability of AISI 1050 by using response surface methodology, ANOVA and Taguchi design

Performance Evaluation of Cryogenic Treated and Untreated Carbide Inserts during Machining of AISI 304 Steel

Effects of Different Cryogenic Treatments on Drilling Performance of HSS Drills

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