Performance of CrCN-WS2 hard/soft composite coated tools in dry cutting of titanium alloys

Lian, Yunsong; Long, Yangyang; Zhao, Guolong; Mu, Chenliang; Li, Xuemu; Deng, Jianxin; Xie, Chaoping

doi:10.1016/j.jmapro.2020.03.014

Cited by 26 publications

(6 citation statements)

References 30 publications

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“…The hard/soft composite coating tools might combine both advantages. As shown in figure 36, the CrCN-WS 2 hard/soft composite coating deposited on the cemented carbide tool surface had better friction performance than the CrCN-only and WS 2only coatings [186]. In addition, the TiAlN/WS bilayer thickness was designed for forming coatings with a self-lubricating effect and high wear resistance [187].…”

Section: Tool Coatingsmentioning

confidence: 99%

Friction behaviors in the metal cutting process: state of the art and future perspectives

Liang

Wang

et al. 2022

Int. J. Extrem. Manuf.

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Material removal in the cutting process is regarded as a friction system with multiple input and output variables. The complexity of cutting friction system is caused by the extreme conditions existing on the tool-chip and tool-workpiece interfaces. The key issue is extremely important to use knowledge of cutting friction behaviors to guide researchers and industrial manufacturing engineers in designing reasonable cutting processes to reduce tool wear and improve surface quality. This review focuses on the state of the art of research on friction behaviors in cutting processes as well as future perspectives. First, the cutting friction phenomena under extreme conditions, such as high temperature, large strain/strain rates, sticking-sliding contact states, and diverse cutting conditions are analyzed. Second, the theoretical models of cutting friction behaviors and the application of simulation technology are discussed. Third, the factors that affect friction behaviors are analyzed including material matching, cutting parameters, lubrication/cooling conditions, micro/nano surface textures and tool coatings. Then, the consequences of the cutting friction phenomena including tool wear patterns, tool life, chip formation, and the machined surface are analyzed. Finally, the research limitations and future work for cutting friction behaviors are discussed. This review contributes to the understanding of cutting friction behaviors and the development of high-quality cutting technology.

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Section: Tool Coatingsmentioning

confidence: 99%

Friction behaviors in the metal cutting process: state of the art and future perspectives

Liang

Wang

et al. 2022

Int. J. Extrem. Manuf.

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“…All the above points have urged researchers to search for alternatives to minimize cutting uid usage and improve the machining performance of titanium alloys. Some alternatives have been proposed, such as dry cutting [9], minimum quantity lubrication (MQL) [10], electrostatic minimum quantity lubrication (EMQL) [11], cryogenic minimum quantity lubrication (CMQL) [12], and cold air with minimum quantity lubrication (CAMQL) [13].…”

Section: Introductionmentioning

confidence: 99%

A novel cold air electrostatic minimum quantity lubrication (CAEMQL) technique for the machining of titanium alloys Ti–6Al–4 V

Liu

Xia

et al. 2023

Int J Adv Manuf Technol

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Milling of titanium alloys is usually associated with a high cutting temperature and severe tool wear. Therefore, ood cooling technologies were conventionally employed for prolonging the tool life and improving the machined surface quality. However, a negative impact on the environment and waste disposal problems caused by a vast quantity of metalworking uids used in the process has become signi cant. In this study, a new machining method called "cold air electrostatic minimum quantity lubrication (CAEMQL)" is proposed for machining titanium alloys Ti-6Al-4V. The milling performance of CAEMQL was systematically assessed in terms of cutting force, cutting temperature, surface roughness, tool life, tool wear and chip morphology, using minimum quantity lubrication (MQL), electrostatic minimum quantity lubrication (EMQL) and cold air minimum quantity lubrication (CAMQL) as benchmarks. It was found that CAEMQL resulted in an improved critical heat ux and steady-state heat transfer performance compared with MQL, EMQL and CAMQL, which thus produced a lower milling force, smaller milling temperature, better surface quality and less tool wear. The degrees of chip segmentation were enhanced with less deformation for CAEMQL due to its synergistic cooling and lubrication effect .

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“…However, machining of this alloy is challenging as it exhibits significantly lower thermal conductivity, intense heat generation, built-up edge (BUE) formation and severe strain hardening characteristics Singh et al, 2019). Although heat generation during machining can be reduced by the application of various lubrication mediums, its excessive usage is not appreciated owing to problems associated with its disposal and health-related issues (Abdalla et al, 2007;Lian et al, 2020). Surface texturing is an effective method to enhance the tribological properties of the tool, as they reduce the contact area at tool chip interface, which decreases the frictional forces and hence the tool wear.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigations on the wear behaviour of micro-EDM-fabricated textured tools during dry turning of Ti6Al4V

Sahu

George

Kuriachen

et al. 2022

ILT

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Purpose This paper aims to focus on analysing the wear characteristics of tungsten carbide tools on which various micro patterns are fabricated to study its effect on the machinability of Ti-6Al-4V at dry turning conditions. Design/methodology/approach Micro-patterns such as dimples, linear grooves and a novel combination of dimples and linear grooves were fabricated on rake faces of uncoated tools by micro-EDM process. Impact of these patterns on tool wear and chip morphology characteristics under dry machining conditions were analysed, and their performances were compared with the non-textured tool (NTT). Findings Encouraging results in terms of minimal tool wear and favourable chip morphology characteristics were observed in case of all the textured tools, which demonstrated better tribological characteristics in contrast to NTT. The average flank wear was reduced by 43.5, 32 and 24.7% in dimple textured tool (DTT), linear textured tool (LTT) and hybrid textured tool (HTT), respectively, as compared to NTT. The average chip curl diameters measured for NTT, DTT, LTT, and HTT were observed to be 6.60, 3.51, 4.0 and 4.31 mm, respectively. Originality/value The contribution of this work lies in fabricating innovative patterns using cost-effective micro-EDM process and analysing how the patterns, depending upon their dimensional area and wear debris accumulation characteristics, influence the machinability of Ti-6Al-4V in the absence of any lubrication mediums.

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Performance of CrCN-WS2 hard/soft composite coated tools in dry cutting of titanium alloys

Cited by 26 publications

References 30 publications

Friction behaviors in the metal cutting process: state of the art and future perspectives

Friction behaviors in the metal cutting process: state of the art and future perspectives

A novel cold air electrostatic minimum quantity lubrication (CAEMQL) technique for the machining of titanium alloys Ti–6Al–4 V

Experimental investigations on the wear behaviour of micro-EDM-fabricated textured tools during dry turning of Ti6Al4V

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