The Experts below are selected from a list of 771 Experts worldwide ranked by ideXlab platform
Wanshan Wang - One of the best experts on this subject based on the ideXlab platform.
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parameter optimization during minimum quantity lubrication Milling of tc4 alloy with graphene dispersed vegetable oil based cutting fluid
Journal of Cleaner Production, 2019Co-Authors: Ming Li, Tianbiao Yu, Rongchuang Zhang, Hongyu Li, Lin Yang, Wanshan WangAbstract:Abstract Minimum Quantity Lubrication has been widely used in the titanium alloy Milling process as an advanced and clean means of cooling and lubrication. The Minimum Quantity Lubrication parameters have a significant influence on the Milling characteristics and so, determining an optimal Minimum Quantity Lubrication parameter combination is vital to obtaining the best Milling characteristics. In this study, Minimum Quantity Lubrication with graphene-dispersed vegetable-oil-based cutting fluids was adopted in the Milling of TC4 alloy, where the cutting fluids were prepared by dispersing graphene nanoparticles into the vegetable-oil-based cutting fluid to improve the Milling characteristics of the TC4 alloy. The integrated Taguchi-Principal component analysis-Gray relational analysis optimization method was used to evaluate the effects of the Minimum Quantity Lubrication parameters on the Milling characteristics and obtain the optimal Minimum Quantity Lubrication parameter combination. The Milling characteristics of TC4 alloy, namely, the Milling force, Milling Temperature, surface micro-hardness, and surface roughness were evaluated and analyzed, and the optimal Minimum Quantity Lubrication parameter combination was obtained. A verification experiment was conducted and the results indicated that all the four Milling characteristics were significantly improved after the optimization process. The improvement rates of the Milling force, Milling Temperature, surface micro-hardness, and surface roughness are 18.13%, 13.59%, 8.36%, and 24.82%, respectively. In summary, appropriately chosen Minimum Quantity Lubrication parameters can enhance the lubrication and cooling properties of the oil film and improve the Milling characteristics. The results of this study attest to the feasibility of the integrated Taguchi-Principal component analysis-Gray relational analysis optimization method and provide an experimental basis for the application of graphene additive in Minimum Quantity Lubrication Milling.
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MQL Milling of TC4 alloy by dispersing graphene into vegetable oil-based cutting fluid
The International Journal of Advanced Manufacturing Technology, 2018Co-Authors: Ming Li, Tianbiao Yu, Rongchuang Zhang, Hongyu Li, Lin Yang, Wanshan WangAbstract:Titanium alloy TC4 is widely used in aerospace, petrochemical, shipbuilding, automobile, and medicine due to its excellent comprehensive performances. However, TC4 is a difficult-to-machine material because of its low thermal conductivity, large friction coefficient, high chemical activity, and low elasticity modulus. In this paper, Minimum Quantity Lubrication (MQL) with vegetable oil-based cutting fluid was adopted in TC4 Milling. Meanwhile, graphene nanoparticles were dispersed into the vegetable oil-based cutting fluid to improve the cooling and lubrication performances. In order to evaluate the performances, a series of Milling experiments were conducted under the four cooling/lubrication conditions (dry, gas, pure MQL, and graphene MQL). The Milling characteristics of TC4 in terms of Milling force, Milling Temperature, tool wear, and surface integrity were compared. Results showed that the graphene additive was effective for improving the Milling characteristics. Overall, the results could be explained that the graphene additive could enhance the cooling and lubrication performances of the oil film formed in the Milling zone. The findings of this paper are expected to be meaningful to provide some experimental basis for the application of the graphene additive in MQL Milling.
Dinghua Zhang - One of the best experts on this subject based on the ideXlab platform.
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Simulation for Cutting Force and Temperature in High-Speed Milling of TB6 Titanium Alloy
Applied Mechanics and Materials, 2013Co-Authors: Dao Xia Wu, Dinghua ZhangAbstract:High-speed Milling of titanium alloys is widely used in aviation and aerospace industries for its high efficiency and good quality. In order to optimize machining parameters in high-speed Milling TB6 titanium alloy, Temperature distribution on the workpiece and the tool are analyzed, and the effect of Milling parameters on Milling force and Milling Temperature are investigated. The results show that the highest Temperature appears on rake face, and near to the tool tip. With increasing of cutting time, heat affected zone on tool is bigger than that on workpiece. Milling Temperature is most sensitive to the variation of Milling speed, next sensitive to the variation of feed per tooth, and it is least sensitive to Milling depth. Milling force is most sensitive to the variation of Milling depth, next sensitive to the variation of feed per tooth, and it is least sensitive to Milling speed.
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Simulation of the High-Speed Milling Temperature of Titanium Alloy Ti - 6Al - 4V
Advanced Materials Research, 2011Co-Authors: Xin Chun Huang, Dinghua ZhangAbstract:To study of the Temperature generating mechanism of Titanium Alloy Ti - 6Al - 4V in high speed, and the influence rule of the Milling process parameters for Milling Temperatures, A Temperature simulation model of the Milling process was found with AdvantEdge, the relationship between the high speed Milling parameters and the Milling Temperature of Titanium Alloy Ti - 6Al - 4V was discussed by the finite element simulation, and the Milling process Temperature was measured by the half artificially thermocouple methods. The result show that the highest Temperature are reached at close to the tool tip in the rack face, the feed per tooth have significant effect on the Milling Temperature, while cutting depth and Milling width have little effect. The Milling Temperature increase with the feed per tooth increasing，the highest Temperature increase with the spindle speed increasing.
Ming Li - One of the best experts on this subject based on the ideXlab platform.
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parameter optimization during minimum quantity lubrication Milling of tc4 alloy with graphene dispersed vegetable oil based cutting fluid
Journal of Cleaner Production, 2019Co-Authors: Ming Li, Tianbiao Yu, Rongchuang Zhang, Hongyu Li, Lin Yang, Wanshan WangAbstract:Abstract Minimum Quantity Lubrication has been widely used in the titanium alloy Milling process as an advanced and clean means of cooling and lubrication. The Minimum Quantity Lubrication parameters have a significant influence on the Milling characteristics and so, determining an optimal Minimum Quantity Lubrication parameter combination is vital to obtaining the best Milling characteristics. In this study, Minimum Quantity Lubrication with graphene-dispersed vegetable-oil-based cutting fluids was adopted in the Milling of TC4 alloy, where the cutting fluids were prepared by dispersing graphene nanoparticles into the vegetable-oil-based cutting fluid to improve the Milling characteristics of the TC4 alloy. The integrated Taguchi-Principal component analysis-Gray relational analysis optimization method was used to evaluate the effects of the Minimum Quantity Lubrication parameters on the Milling characteristics and obtain the optimal Minimum Quantity Lubrication parameter combination. The Milling characteristics of TC4 alloy, namely, the Milling force, Milling Temperature, surface micro-hardness, and surface roughness were evaluated and analyzed, and the optimal Minimum Quantity Lubrication parameter combination was obtained. A verification experiment was conducted and the results indicated that all the four Milling characteristics were significantly improved after the optimization process. The improvement rates of the Milling force, Milling Temperature, surface micro-hardness, and surface roughness are 18.13%, 13.59%, 8.36%, and 24.82%, respectively. In summary, appropriately chosen Minimum Quantity Lubrication parameters can enhance the lubrication and cooling properties of the oil film and improve the Milling characteristics. The results of this study attest to the feasibility of the integrated Taguchi-Principal component analysis-Gray relational analysis optimization method and provide an experimental basis for the application of graphene additive in Minimum Quantity Lubrication Milling.
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MQL Milling of TC4 alloy by dispersing graphene into vegetable oil-based cutting fluid
The International Journal of Advanced Manufacturing Technology, 2018Co-Authors: Ming Li, Tianbiao Yu, Rongchuang Zhang, Hongyu Li, Lin Yang, Wanshan WangAbstract:Titanium alloy TC4 is widely used in aerospace, petrochemical, shipbuilding, automobile, and medicine due to its excellent comprehensive performances. However, TC4 is a difficult-to-machine material because of its low thermal conductivity, large friction coefficient, high chemical activity, and low elasticity modulus. In this paper, Minimum Quantity Lubrication (MQL) with vegetable oil-based cutting fluid was adopted in TC4 Milling. Meanwhile, graphene nanoparticles were dispersed into the vegetable oil-based cutting fluid to improve the cooling and lubrication performances. In order to evaluate the performances, a series of Milling experiments were conducted under the four cooling/lubrication conditions (dry, gas, pure MQL, and graphene MQL). The Milling characteristics of TC4 in terms of Milling force, Milling Temperature, tool wear, and surface integrity were compared. Results showed that the graphene additive was effective for improving the Milling characteristics. Overall, the results could be explained that the graphene additive could enhance the cooling and lubrication performances of the oil film formed in the Milling zone. The findings of this paper are expected to be meaningful to provide some experimental basis for the application of the graphene additive in MQL Milling.
Guanghui Li - One of the best experts on this subject based on the ideXlab platform.
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Adhesive failure of grooved tool in Milling of 3Cr-1Mo-1/4V steel
International Journal of Materials & Product Technology, 2020Co-Authors: Guanghui LiAbstract:The adhesive failure of an uncoated cemented carbide tool was investigated in face Milling of 3Cr-1Mo-1/4V stainless steel. The Milling force and Milling Temperature were measured. The Temperature field, stress field and thermo-mechanical coupled fields were analysed by the finite element method. The adhesion phenomenon between materials of the workpiece and the tool were observed. Analysis of energy spectrum was performed to evaluate the adhesion between the tool and chips. The failure mechanism at the end of tool life was investigated in detail using scanning electron microscope (SEM) and correlated to the chemical and mechanical properties of the tool.
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Experimental study on adhesive wear of Milling insert with complex groove
The International Journal of Advanced Manufacturing Technology, 2009Co-Authors: Guanghui LiAbstract:This paper presents an experimental study on the adhesive wear of a Milling insert with complex groove when Milling 3Cr-1Mo-1/4V and 0Cr18Ni9 steels. Experimental measurements of Milling Temperature and Milling force were performed. Then the adhesive behaviors and mechanisms between the steels and uncoated carbide were analyzed and discussed. It is found that the high Temperature gradient, thermal stress, alternate compressive stress, and tensile stress in cut-in and cut-out, provide a situation for adhesion. Some suggestions for avoiding adhesive wear and the mechanism of adhesive wear of the insert are presented.
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experiment modeling and analysis for Temperature field of Milling insert
The International Journal of Advanced Manufacturing Technology, 2009Co-Authors: Guanghui LiAbstract:This paper presents a theoretical and experimental study of the dynamic Temperature field on a Milling insert with complex groove. Experimental measurements of Milling Temperature using the thermocouple technique were performed. A mathematical model of the Temperature field of the insert was established. A finite element model of the insert was built to simulate the Temperature field. The boundary condition was determined by the experimental data and mathematical calculation, and then the Temperature field of the Milling insert was simulated through finite element analysis. The Temperature distribution in a cut-in/cut-out cycle was obtained.
Pascal Bellon - One of the best experts on this subject based on the ideXlab platform.
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Steady State Phase Diagram of Cu-Ag Under Ball Milling: An XRD and APFIM Study
MRS Proceedings, 2011Co-Authors: Fang Wu, Pascal Bellon, A. J. Melmed, T. A. LusbyAbstract:The nature of the steady state reached during ball Milling of Cu x Ag 1−x powders (x=35 to 75) is studied as a function of the Milling Temperature (85K≤T≤503K). The characterization of the powders is performed by using x-ray diffraction, differential calorimetry and atom probe field ion microscopy. A steady-state phase diagram is built. Three-phase coexistence is shown to generally take place at intermediate Milling Temperatures. Atom probe data reveals that the solid solution stabilized by low Milling Temperature is nearly random, where as Milling at elevated Temperatures results in the decomposition of the elements at a lengthscale of 20∼30 nm.
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electron microscopy nanoscale characterization of ball milled cu ag powders part ii nanocomposites synthesized by elevated Temperature Milling or annealing
Acta Materialia, 2002Co-Authors: S Zghal, Fang Wu, R D Twesten, Pascal BellonAbstract:Abstract Microstructures and phases stabilized at steady state by variable Temperature ball Milling of Cu50Ag50 powders are characterized using transmission and scanning transmission electron microscopy. Starting from chemically mixed and cold-worked powders obtained by room Temperature Milling, it is shown that, upon increasing the Milling Temperature, the material first decomposes into Cu-rich and Ag-rich solid solutions, and then recrystallizes. A similar sequence is observed during the static annealing of the solid solution precursor. In both cases, Cu-Ag nanocomposites are synthesized, at a scale of a few nanometers in the unrecrystallized state, and at a scale ranging from 30 nm after dynamic recrystallization to 75 nm after static recrystallization. These nanocomposites exhibit high hardness values, approaching 6 GPa. Interestingly enough, recrystallization leads to an increase in the hardness of these materials.