Initial Tool Wear Mechanism in Dry and Lubricated Turning of Inconel 718

Memarianpour, Morvarid; Niknam, Seyed Ali; Turenne, S.; Balazinski, Marek

doi:10.1007/978-3-030-04792-4_51

Cited by 4 publications

(6 citation statements)

References 15 publications

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“…In principle, according to reported works in the literature [ 17 , 33 ], it can be exhibited that the combination of lower levels of feed rate and cutting speed may improve tool life. The main reason could be attributed to less presence and effects of friction, heat generation, and micro-structural deflections in the first few seconds of machining at lower levels of cutting parameters.…”

Section: Resultsmentioning

confidence: 99%

“…The micrographs of the microstructures were obtained at both low and high magnifications. As noted earlier, according to the research outcomes reported in previous works by authors [17,29], the cutting time 4s was considered as the transition point, and the first four seconds of cutting operations was considered as the transition period, and the five different cutting conditions, as listed in Table 2, were used in the transition period. The first cutting condition was considered the reference condition, and it was employed after the transition point in all the experiments.…”

Section: Tool Wear Measurementmentioning

confidence: 99%

“…Applying the optimal values of cutting parameters, including cutting speed ( v c ), depth of cut ( a p ), and feed rate ( f r ) within the very first seconds of machining, may result in the improvement of the tool life. Memarianpour et al [ 17 ] studied the effects of cutting conditions, with specific emphasis on cutting speed ( v c ) and lubrication modes on tool wear progression when turning Inconel 718.…”

Section: Introductionmentioning

confidence: 99%

“…However, the initial tool wear mechanism of carbide tools in high-speed machining needs to be further examined in wider scopes at different values of cutting conditions and cutting time. The lack of knowledge aforementioned was partially studied by Memarianpour et al [ 17 ]. Unfortunately, no sufficient source of data has been provided about the variation of v Bmax when machining Inconel 718 using different cutting tools.…”

Section: Introductionmentioning

confidence: 99%

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Study of the Effects of Initial Cutting Conditions and Transition Period on Ultimate Tool Life when Machining Inconel 718

et al. 2021

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Rapid tool wear and limited tool life are major problems when machining Inconel 718, which still need further attention. Amongst the reported strategies, limited studies have been reported on optimizing initial cutting conditions by means of tool life improvement. Therefore, in this work, the tool wear progress and tool life were investigated by varying the initial conditions in the transition period, which was set at four seconds. The transition point was discovered by previous works by the authors. After the transition point, similar cutting conditions were used as the reference condition. The tool wear morphology and size were recorded and analyzed in each condition. It was revealed that applying a lower cutting speed and feed rate in the transition period led to improved tool life as compared to the reference condition. In other words, the use of optimum levels of cutting parameters in the transition period of the cutting process may enhance tool life at higher cutting time. For instance, initial feed rate (0.15 mm/rev) and cutting speed (25 m/min) led to the improvement in the ultimate tool life by about 67% and 50%, respectively. Besides, applying the lower initial cutting speed, i.e., 25 m/min, increased the tool life by about 50% when the insert reached the maximum flank wear (vBmax) of 300 µm in comparison with those at higher initial cutting speeds. This phenomenon may lead to better insight into the effect of the influence of the initial cutting conditions in the transition period on tool life when machining hard-to-cut materials. Moreover, the built-up edge (BUE) was exhibited as the primary wear mode in all cutting conditions.

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Section: Resultsmentioning

confidence: 99%

Section: Tool Wear Measurementmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Study of the Effects of Initial Cutting Conditions and Transition Period on Ultimate Tool Life when Machining Inconel 718

et al. 2021

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“…There is a direct relationship between the parameters of the cutting regime and the behavior of the initial wear of the cutting tool, alongside its useful life. However, this singularity has received less attention compared to the other two regions of the wear curve [17,18]. At the same time, to evaluate this initial wear of the tool, it is necessary to apply multi-objective optimization [19] of the parameters of the cutting regime [20] in order to reduce its effects.…”

Section: Introductionmentioning

confidence: 99%

Optimization of the Cutting Regime in the Turning of the AISI 316L Steel for Biomedical Purposes Based on the Initial Progression of Tool Wear

Risco-Alfonso

Pérez‐Rodríguez

Zambrano‐Robledo

et al. 2021

Metals

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The development of biomedical devices has improved the quality of life for millions of people. The increase in life expectancy generates an increase in the demand for these devices. One of the most used materials for these purposes is 316 L austenitic stainless steel due to its mechanical properties and good biocompatibility. The objective of the present investigation was to identify the dependence between the main cutting force, the initial speed of the tool wear, the surface roughness, and the parameters of the cutting regime. Based on these dependencies, a multi-objective optimization model is proposed to minimize the energy consumed and initial wear rate, as well as to maximize productivity, maintaining the surface roughness values below those established by the ISO 5832-1 standard. The wear of the cutting tool was measured on a scanning electron microscope. For the optimization process, a genetic algorithm based on NSGA-II (Non-nominated Sorting Genetic Algorithm) was implemented. The input variables were the cutting speed and the feed in three levels. The cutting force and surface roughness were set as restrictions. It is concluded that the mathematical model allows for the optimization of the cutting regime during dry turning and with the use of MQL (Minimum Quantity Lubrication) with BIDEMICS JX1 ceramic tools (NTK Cutting Tools, Wixom, MI, USA), of AISI 316 L steel for biomedical purposes. Pareto sets and boundaries allow for choosing the most appropriate solution according to the specific conditions of the workshop where it is applied, minimizing the initial progression of tool wear and energy consumed, and maximizing productivity by guaranteeing the surface roughness values established for these types of parts according to the standard.

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