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Xin Li - One of the best experts on this subject based on the ideXlab platform.
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an experimental investigation of effects of cooling lubrication conditions on tool wear in high speed end milling of ti 6al 4v
Wear, 2006Co-Authors: Yongsheng Su, Ning He, Liang Li, Xin LiAbstract:Abstract High-speed machining of titanium alloys generates high cutting temperature in the cutting zone, which decreases tool life rapidly. So the improvement of the tool life in the high-speed machining of titanium alloys very much depends on the effectiveness of the cooling/lubrication provided. In this paper, coated cemented carbide tools were used in high-speed end milling of Ti-6Al-4V. Experiments were conducted under various cooling/lubrication conditions to find the optimal cooling/lubrication condition to improve the tool life. Dry, Flood Coolant, nitrogen-oil-mist, compressed cold nitrogen gas (CCNG) at 0, and −10 °C, and compressed cold nitrogen gas and oil mist (CCNGOM) as the cooling/lubrication conditions were studied. For this research, a new cooling system was used to lower the temperature of compressed nitrogen gas. The experimental results show that the cooling/lubrication condition for CCNGOM provided the best tool life among all the cooling/lubrication conditions employed. SEM analysis was carried out on the worn tools to determine tool failure modes and wear mechanisms. Flank wear was the dominant failure mode under the cooling/lubrication conditions, including dry, nitrogen-oil-mist, CCNG and CCNGOM. Excessive chipping at the cutting edge and fracture on the flank face were responsible for tool failure under Flood Coolant condition. Analyses based on SEM suggest that diffusion wear and thermal fatigue wear were the predominant wear mechanisms of the coated tools under the cooling/lubrication conditions employed.
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An experimental investigation of effects of cooling/lubrication conditions on tool wear in high-speed end milling of Ti-6Al-4V
Wear, 2006Co-Authors: Yongsheng Su, Ning He, Liang Li, Xin LiAbstract:Abstract High-speed machining of titanium alloys generates high cutting temperature in the cutting zone, which decreases tool life rapidly. So the improvement of the tool life in the high-speed machining of titanium alloys very much depends on the effectiveness of the cooling/lubrication provided. In this paper, coated cemented carbide tools were used in high-speed end milling of Ti-6Al-4V. Experiments were conducted under various cooling/lubrication conditions to find the optimal cooling/lubrication condition to improve the tool life. Dry, Flood Coolant, nitrogen-oil-mist, compressed cold nitrogen gas (CCNG) at 0, and −10 °C, and compressed cold nitrogen gas and oil mist (CCNGOM) as the cooling/lubrication conditions were studied. For this research, a new cooling system was used to lower the temperature of compressed nitrogen gas. The experimental results show that the cooling/lubrication condition for CCNGOM provided the best tool life among all the cooling/lubrication conditions employed. SEM analysis was carried out on the worn tools to determine tool failure modes and wear mechanisms. Flank wear was the dominant failure mode under the cooling/lubrication conditions, including dry, nitrogen-oil-mist, CCNG and CCNGOM. Excessive chipping at the cutting edge and fracture on the flank face were responsible for tool failure under Flood Coolant condition. Analyses based on SEM suggest that diffusion wear and thermal fatigue wear were the predominant wear mechanisms of the coated tools under the cooling/lubrication conditions employed.
Eduardo Carlos Bianchi - One of the best experts on this subject based on the ideXlab platform.
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Evaluating the effect of the compressed air wheel cleaning in grinding the AISI 4340 steel with CBN and MQL with water
The International Journal of Advanced Manufacturing Technology, 2018Co-Authors: Eduardo Carlos Bianchi, Anselmo Eduardo Diniz, H J De Mello, Bruno Kenta Sato, Alan Rodrigo Sales, José Claudio Lopes, Luiz Eduardo Angelo Sanchez, Paulo Roberto AguiarAbstract:The application of minimum quantity of lubricant (MQL) in grinding process is a challenging task. Once the MQL is considered an environmentally friendly technique, its implementation in grinding process is interesting to achieve cleaner production. On the other hand, its use brings some problems to the process, such as intensification of grinding wheel clogging phenomenon and increase of cutting temperatures, which impairs on the attainment of a good surface quality, together with dimensional and geometrical accuracy. Looking for improving the MQL efficiency in grinding process, two eco-friendly techniques were found: the addition of water in the MQL and the wheel cleaning system with compressed air. The present research seeks to evaluate the improvement of MQL application in grinding using the combination of these techniques. Both techniques MQL + water and wheel cleaning system are innovative, since there are almost no articles in literature citing its use. The experiments were performed in an external cylindrical plunge grinding using a vitrified cubic boron nitrite (CBN) grinding wheel. The workpiece material was a quenched and tempered AISI 4340 steel. The cooling methods employed in the process were a conventional method (Flood Coolant), MQL + water (1:1, 1:3, 1:5 part of oil per parts of water), MQL + water + cleaning system (1:1, 1:3, 1:5 part of oil per parts of water), and MQL with and without cleaning system. Results were analyzed based on some workpiece parameters (roughness, roundness deviation, and microstructure) and on diametrical wheel wear and grinding power. The addition of water allied to cleaning system with compressed air provided the best results among those using the MQL technique, with results comparable to the conventional cooling method.
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MQL with water in cylindrical plunge grinding of hardened steels using CBN wheels, with and without wheel cleaning by compressed air
The International Journal of Advanced Manufacturing Technology, 2017Co-Authors: Rodrigo De Souza Ruzzi, Anselmo Eduardo Diniz, H J De Mello, Rafael De Mello Belentani, Rubens Chinali Canarim, Doriana M. D’addona, Paulo Roberto Aguiar, Eduardo Carlos BianchiAbstract:Minimum quantity of lubricant (MQL) in grinding is an alternative for reducing abundant fluid flow and both environmental and health hazards when compared with conventional fluid application. In spite of the fact that MQL is considered an innovative cost-effective and environmentally friendly technique, when used in grinding its inadequate application can increase cutting temperature and wheel clogging, worsening surface roughness, and increasing geometric and dimensional errors. The present study aims to evaluate improvements in MQL in grinding using MQL + water (1:1, 1:3, and 1:5 parts of oil per parts of water), when compared to MQL without water and conventional cooling-lubrication technique. Wheel cleaning by compressed air was also tested, aimed for unclogging of the wheel pores. The tests were performed in a plunge cylindrical grinder with CBN wheel and workpieces of AISI 4340 for different feed rates. The ground workpieces were analyzed with respect to the surface roughness, roundness errors, microhardness, and microscopic changes. In addition, tangential cutting force and diametric wheel wear were investigated. The results observed for the MQL plus water in the proportion of 1:5, with wheel cleaning system (at 30° inclination angle of the air nozzle) were the best, when compared to MQL without water, and close to the conventional Flood Coolant, implying that this technique is a potential alternative for cooling-lubrication when applied properly.
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Evaluation of different methods of cooling-lubrication in cylindrical grinding of advanced ceramic dip
Materials Research-ibero-american Journal of Materials, 2014Co-Authors: Rafael Plana Simões, Paulo Roberto Aguiar, Eduardo Carlos Bianchi, M. H. Oikawa, Roosevelt Droppa Junior, Rubens Chinali CanarimAbstract:The current work presents a study of alternative methods of cooling-lubrication for the external plunge grinding of advanced ceramics using diamond wheels. These two alternative methods, which are intended to reduce cutting fluid expenses, are commonly referred to as the optimized cooling-lubrication method and minimal quantity of lubrication (MQL). The techniques were evaluated by process monitoring and by the assessment of output variables such as tangential cutting force, G ratio, roundness errors, surface roughness, microstructure and residual stresses measured by X-ray diffraction. The obtained results showed that the two proposed techniques can replace the conventional cooling-lubrication method, i.e., Flood Coolant. In particular, optimized cooling-lubrication method reduced wheel wear and produced workpieces with the best geometric and dimensional finishes, while MQL significantly reduced the amount of fluid employed in the process without harming the workpiece quality.
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Utilization of teflon and aluminum oxide for wheel cleaning in Minimum Quantity Lubrication (MQL) grinding
Materials Research-ibero-american Journal of Materials, 2013Co-Authors: Bianca Gomes Barros, Rubens Chinali Canarim, Paulo Roberto Aguiar, Tiago Roque Benetoli Da Silva, Eduardo Carlos BianchiAbstract:Researches concerning cooling-lubrication optimization in grinding have been conducted to contribute to a more sustainable process. An alternative to Flood Coolant is minimum quantity lubrication (MQL), which spray oil droplets in a compressed air jet. However, problems related to wheel cleaning were reported, due to wheel loading by a mixture of chips and oil, resulting in worsening of surface quality. This work aims to evaluate the viability of Teflon and aluminum oxide for wheel cleaning, compared to MQL without cleaning and MQL with cleaning by compressed air, through the following output variables: surface roughness, roundness, wheel wear, grinding power and acoustic emission. Vickers microhardness measurements and optical microscopy were also carried out. The results showed that both materials were efficient in cleaning the wheel, compared to MQL without cleaning, but not as satisfactory as compressed air. Much work is to be done in order to select the right material for wheel cleaning.
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Utilization Of Minimum Quantity Lubrication (mql) With Water In Cbn Grinding Of Steel
Materials Research-ibero-american Journal of Materials, 2013Co-Authors: Rafael De Mello Belentani, Anselmo Eduardo Diniz, Rubens Chinali Canarim, Paulo Roberto Aguiar, Hamilton Funes Júnior, Amauri Hassui, Eduardo Carlos BianchiAbstract:The use of cutting fluids is fundamental to machining processes, mainly when it comes to high heat generation, which is the case of grinding. Thus, lubrication and cooling provided by cutting fluids improve the final quality of the workpiece. However, cutting fluid usage provide some drawbacks concerning environmental, costs and health issues. Therefore, new methods for application and optimization of cutting fluids are being researched aiming to reduce the amount of fluid used, as well as the minimization of cutting fluid hazards. The present study analyzes the behavior of a recently proposed optimization method, up to now only tested in turning, which consists of adding water to minimum quantity lubrication (MQL). Three different proportions were tested in this study: 1/1, 1/3 and 1/5 parts of oil per parts of water. The following output variables were evaluated: surface roughness, roundness errors, grinding power and diametric wheel wear. Also, optical microscopy and microhardness measurements were conducted, in order to detect burns and surface alterations. The obtained results were also compared to conventional (Flood Coolant) cooling-lubrication and traditional MQL (without water). MQL with water (1/5) presented better results of surface roughness and roundness errors, when compared to traditional MQL, and the results are very close to when using Flood Coolant. For grinding power and wheel wear, the results for MQL with water (1/5) were the best among the tested conditions.
Yongsheng Su - One of the best experts on this subject based on the ideXlab platform.
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an experimental investigation of effects of cooling lubrication conditions on tool wear in high speed end milling of ti 6al 4v
Wear, 2006Co-Authors: Yongsheng Su, Ning He, Liang Li, Xin LiAbstract:Abstract High-speed machining of titanium alloys generates high cutting temperature in the cutting zone, which decreases tool life rapidly. So the improvement of the tool life in the high-speed machining of titanium alloys very much depends on the effectiveness of the cooling/lubrication provided. In this paper, coated cemented carbide tools were used in high-speed end milling of Ti-6Al-4V. Experiments were conducted under various cooling/lubrication conditions to find the optimal cooling/lubrication condition to improve the tool life. Dry, Flood Coolant, nitrogen-oil-mist, compressed cold nitrogen gas (CCNG) at 0, and −10 °C, and compressed cold nitrogen gas and oil mist (CCNGOM) as the cooling/lubrication conditions were studied. For this research, a new cooling system was used to lower the temperature of compressed nitrogen gas. The experimental results show that the cooling/lubrication condition for CCNGOM provided the best tool life among all the cooling/lubrication conditions employed. SEM analysis was carried out on the worn tools to determine tool failure modes and wear mechanisms. Flank wear was the dominant failure mode under the cooling/lubrication conditions, including dry, nitrogen-oil-mist, CCNG and CCNGOM. Excessive chipping at the cutting edge and fracture on the flank face were responsible for tool failure under Flood Coolant condition. Analyses based on SEM suggest that diffusion wear and thermal fatigue wear were the predominant wear mechanisms of the coated tools under the cooling/lubrication conditions employed.
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An experimental investigation of effects of cooling/lubrication conditions on tool wear in high-speed end milling of Ti-6Al-4V
Wear, 2006Co-Authors: Yongsheng Su, Ning He, Liang Li, Xin LiAbstract:Abstract High-speed machining of titanium alloys generates high cutting temperature in the cutting zone, which decreases tool life rapidly. So the improvement of the tool life in the high-speed machining of titanium alloys very much depends on the effectiveness of the cooling/lubrication provided. In this paper, coated cemented carbide tools were used in high-speed end milling of Ti-6Al-4V. Experiments were conducted under various cooling/lubrication conditions to find the optimal cooling/lubrication condition to improve the tool life. Dry, Flood Coolant, nitrogen-oil-mist, compressed cold nitrogen gas (CCNG) at 0, and −10 °C, and compressed cold nitrogen gas and oil mist (CCNGOM) as the cooling/lubrication conditions were studied. For this research, a new cooling system was used to lower the temperature of compressed nitrogen gas. The experimental results show that the cooling/lubrication condition for CCNGOM provided the best tool life among all the cooling/lubrication conditions employed. SEM analysis was carried out on the worn tools to determine tool failure modes and wear mechanisms. Flank wear was the dominant failure mode under the cooling/lubrication conditions, including dry, nitrogen-oil-mist, CCNG and CCNGOM. Excessive chipping at the cutting edge and fracture on the flank face were responsible for tool failure under Flood Coolant condition. Analyses based on SEM suggest that diffusion wear and thermal fatigue wear were the predominant wear mechanisms of the coated tools under the cooling/lubrication conditions employed.
Safian Sharif - One of the best experts on this subject based on the ideXlab platform.
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Effect of cryogenic machining for titanium alloy based on indirect, internal and external spray system
Procedia Manufacturing, 2020Co-Authors: Mohd Azlan Suhaimi, Kyung-hee Park, Gi-dong Yang, Mohd Juzaili Hisam, Safian SharifAbstract:Abstract Due to the excellent properties of Ti-6Al-4V titanium alloy such as lightweight, high wear and corrosion resistance and able to maintain high strength at high elevated temperature, this material has been used mostly in aerospace and biomedical industries. However, titanium alloy being considered as a hard-to-cut material with poor machinability due to its low thermal conductivity which leads to the excessive tool wear during machining and requires high machining cost. To overcome these problems, cryogenic machining has been taken place as a promising method for machinability improvement in terms of tool wear reduction, lower energy consumption and low machining cost. Even though this method has been implemented for titanium alloy machining, it is difficult to handle the excessive extremely low-temperature Coolant (up to -150 ℃) that exposed directly to the workpiece. As a result, the workpiece hardness will be increased, hence will increase the required cutting force for the machining process. In concern with the problem, this paper presents a novel cryogenic cooling mechanism (indirect cryogenic cooling) that will be used as one of the cooling and lubrication strategy. The performance of the indirect cryogenic cooling will be compared with Flood cooling, Minimum Quantity Lubrication (MQL) and conventional cryogenic cooling method by using the external and internal spray system. Liquid nitrogen (LN2) being selected as the cooling medium in this work since its temperature can reach lower -196 ℃, odorless and more environmentally friendly. A specially designed tooling kit that able to supply the liquid nitrogen to the cutting tool internally is used in this method. The developed indirect cryogenic supply method able to improve the machinability of Ti-6Al-4V. The cutting force is reduced by 54% and the tool life is improved by 90% compared to the conventional Flood Coolant strategy.
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Effect of cryogenic high-speed milling of compacted graphite iron using indirect spray system
The International Journal of Advanced Manufacturing Technology, 2018Co-Authors: Mohd Azlan Suhaimi, Kyung-hee Park, Gi-dong Yang, Safian SharifAbstract:Compacted graphite iron (CGI) is replacing conventional cast iron (CI), especially in the automotive industries for the manufacture of a high-performance and light-weight diesel engine due to its outstanding mechanical properties as compared to the conventional CI. Nevertheless, the pace of replacement is still slow because of the low machining performance encountered by the industries during high-speed machining of CGI. Thus, in this study, the effect of various cooling-lubrication strategies in high-speed machining of CGI using uncoated carbide inserts was investigated. Results showed that the combination of indirect cryogenic cooling and minimum quantity lubrication (MQL) improves the tool life by 26% compared to conventional Flood Coolant strategy. The result has been clarified by monitoring the cutting force and the sound pressure for each cooling/lubrication strategy.
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Feasibility study of using vegetable oil as a cutting lubricant through the use of minimum quantity lubricant during machining
2009Co-Authors: Safian Sharif, Noordin Mohd Yusof, Mohd Hasbullah Idris, Zainal Abidin Ahmad, Izman Sudin, Adnan Ripin, Azrul Hisyam Mat ZinAbstract:In machining, the occurrence of tool wear is a natural phenomenon which may lead to tool failure. The deformation during cutting at the interface between the tool face and workpiece tends to generate high cutting temperature. This condition reduces the tool life and the surface quality of the workpiece. The application of Flood Coolant to reduce the friction at the tool-workpiece may create several environmental problems. The introduction of Minimum Quantity Lubrication (MQL) as an alternative technique which is the process of pulverizing a very small amount of oil (< 30ml/h) can be regarded as replacement of dry machining while it may also be considered as an alternative to Flood cooling. The research focused on the feasibility of using palm oil as cutting lubricant through the use of MQL during end milling hardened STAVAX ESR stainless steel of hardness 50 HRC with TiAlN and AlTiN coated carbide tools. The effect of various kind of lubricant and cutting speed on tool life, tool wear, cutting forces and surface integrity. The application of this ‘green machining’ would improve the plant environment, reduce the pollution, minimize the industrial hazard, reduce the machining cost and prolonged the tool life.
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Performance evaluation of vegetable oil as an alternative cutting lubricant when end milling stainless steel using tiain coated carbide tools
2009Co-Authors: Safian Sharif, M. A. Hisyam, Denni Kurniawan, E. A. OradyAbstract:This paper reports the experimental investigations on the use of various cutting fluids when end milling AISI 420 hardened stainless steel using TiAIN coated carbide tool. The cooling techniques include dry, minimum quantity lubrication (MQL), and Flood Coolant with tool life and surface roughness as the main responses. Particular observation was emphasized on the use of vegetable oil as the Coolant in MQL compared to the common fatty alcohol. Machining trials were performed at cutting speed of 100 m/min and feed of 0.03 mm/tooth. The radial and axial depths of cut were maintained at 12 mm and 0.6 mm, respectively. Results showed that both the cooling techniques and the type of cutting fluid used significantly affect the tool life and surface finish of the machined workpiece. MQL technique, especially when using vegetable oil based cutting fluid, outperformed other cooling techniques in terms of tool life. Flood Coolant recorded the shortest tool life. Average flank wear was the dominant tool failure mode for all cooling techniques tested, except for Flood Coolant whereby average flank wear and chippings were the limiting factor for the tool failure. Dry cutting recorded the lowest surface roughness on the machined surface as compared to other cooling techniques. At the selected cutting parameters, particularly when the cutting tool was still sharp, the end milling produced surface finish of finer than 0.8 µm in arithmetical surface roughness (Ra).
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Optimization of Surface Roughness when End Milling Ti-6Al4V using TiAlN Coated Tool
2007Co-Authors: Amrifan Saladin Mohruni, Safian Sharif, Mohd Yusof Noordin, V. C. VenkateshAbstract:Investigation on the surface roughness of titanium alloy, Ti-6AL4V during end milling using TiAlN coated solid carbide tools was conducted at various cutting conditions under Flood Coolant. Surface roughness as one of the component for surface integrity was examined using response surface methodology at various primary cutting parameters such as cutting speed, feed and radial rake angle. Results showed that the second order surface roughness model was the best model and used to ascertain the optimum cutting conditions using response surface methodology. ANOVA was employed to validate the predictive surface roughness models.
Muhammd P Jahan - One of the best experts on this subject based on the ideXlab platform.
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Assessment of tool wear and microstructural alteration of the cutting tools in conventional and sustainable slot milling of Ti-6Al-4V alloy
The International Journal of Advanced Manufacturing Technology, 2019Co-Authors: Ashutosh Khatri, Muhammd P Jahan, Jianfeng MaAbstract:This research presents both qualitative and quantitative analyses of tool wear during slot milling of Ti-6Al-4V alloy under conventional Flood Coolant and sustainable dry and minimum quantity lubrication (MQL) machining conditions. The microstructures of the cutting tools near the cutting edges have been analyzed for understanding the effectiveness of tool coating and the influence of tool wear and machining conditions on the tool microstructure. The abrasion wear was measured using maximum flank wear (VB_max) and the length over which the flank wear occurred. The chipping wear was measured using the surface area of the material chipped off from the cutting edge or tool nose. In addition, the correlations between the abrasion and chipping wear with plastic failure were investigated. It was found that the average magnitudes of VB_max and length were lower in MQL machining. The calculations of the surface area of chipped materials indicate comparatively lower chipping wear in MQL machining. Both the abrasion and chipping wear occurred along with plastic failure, indicating correlations among those wear mechanisms. It turned out that the TiAlN-coating was more effective in the reduction of tool wear under dry machining conditions. Delamination wear was observed under Flood and MQL conditions, illustrating the effectiveness of coated tools under dry machining conditions. The microstructural analysis of the worn-out uncoated tools indicates plastic deformation and grain refinement underneath the tool wear, whereas this effect is less severe in coated tools. Conclusively, sustainable dry machining with TiAlN-coated tools and MQL machining resulted lesser tool wear, indicating the effectiveness of sustainable machining processes for Ti-6Al-4V alloy.
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Investigating Microstructural Changes and Phase Transformation During Slot Milling of Ti-6Al-4V in Dry, Flood Coolant and MQL Conditions
Volume 2: Processes; Materials, 2019Co-Authors: Ashutosh Khatri, Muhammd P Jahan, Xingbang Chen, Jianfeng MaAbstract:Abstract The objective of this study is to investigate the microstructural changes and phase transformation of chips and workpiece during slot milling on Ti-6Al-4V alloy in dry, Flood Coolant, and MQL conditions using uncoated carbide tools. The experiments were performed at varying feed rate and depth of cut with a fixed cutting speed of 50 m/min. The microstructures of the machined chips indicate that dry machining had the highest percentage of β-phase indicating higher phase transformation owing to higher tool temperature. The β-phase was found to be the least in MQL machining chips, which is very similar to the microstructural composition of un-machined surface. Although there were signs of phase transformation, there were very minimal changes in phases in the workpiece for all three machining conditions. In many cases, no change or slight decrease in β-phase was observed at the sub-surface, indicating thermal softening of the workpiece, especially in dry machining. The findings from this study confirm the fact that, high temperature close to beta transition temperature is generated during dry machining of titanium alloy, and most of heat is carried away by the chips resulting in phase transformation from alpha to beta phase in chips. However, no significant phase changes occurred into the microstructure of the workpiece in any condition, although minor thermal softening was found at the sub-surface of dry machined workpiece.
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investigating tool wear mechanisms in machining of ti 6al 4v in Flood Coolant dry and mql conditions
Procedia Manufacturing, 2018Co-Authors: Ashutosh Khatri, Muhammd P JahanAbstract:Abstract The objective of this study is to identify and explain tool wear mechanisms that dominate during machining of titanium alloy Ti-6Al-4V in dry, Flood Coolant, and minimum quantity lubrication (MQL) conditions. A series of experiments were conducted using end milling of Ti-6Al-4V by varying feed rate and depth of cut, while the cutting speed was kept constant at comparatively higher cutting speed. Both uncoated and titanium aluminum nitride (TiAlN)-coated carbide tools were used for machining Ti-6Al-4V at the same settings of parameters. It was observed that abrasion was the most dominant tool wear mechanism for all dry, Flood Coolant and MQL machining conditions. Edge chipping and tool nose wear were the next dominating tool wear mechanisms in conventional Flood Coolant machining, which may be associated with the thermal fatigue caused by the periodic cooling of tool tip from the high temperature generated during machining. On the other hand, adhesion was the second most dominant tool wear mechanism in the dry machining. Both the edge chipping and adhesion of chips to the cutting tools were reduced significantly in MQL machining. The delamination of coating film was observed when TiAlN-coated carbide tools were used for machining Ti-6Al-4V. The delamination was more significant in wet and MQL machining compared to dry machining, indicating the effectiveness of coated tools in dry machining condition compared to wet and MQL machining conditions. Among three conditions, MQL provided the least occurrences of tool wear, indicating suitability of MQL in productive machining of titanium alloys.
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A comparative study on the machinability of Ti-6Al-4V using conventional Flood Coolant and sustainable dry machining
International Journal of Machining and Machinability of Materials, 2015Co-Authors: Abdulhameed Alaa Dawood, Gregory K. Arbuckle, Muhammd P JahanAbstract:This study aims to conduct a comparative experimental investigation on the machinability of Ti-6Al-4V for conventional Flood Coolant machining and sustainable dry machining. The effect of cutting speed, feed rate and depth of cut on machining performance has been evaluated for both conditions. A comparative investigation on the tool wear mechanism and chip morphology for dry and wet machining has also been presented. The machining time and surface roughness were found to be lower in dry machining compared to wet machining. The tool wear was found to be unpredictable with no significant difference for dry and wet machining, although cutting tools suffered from more adhesion of chips during dry machining. The flank wear and chipping were more common in wet machining, whereas crater wear and build-up edge were predominant in dry machining. Comparing all the parameters, sustainable dry machining was found to provide better performance for machining Ti-6Al-4V.