The Experts below are selected from a list of 9633 Experts worldwide ranked by ideXlab platform
G. Nezzal - One of the best experts on this subject based on the ideXlab platform.
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Electrocoagulation of Cutting Oil emulsions using aluminium plate electrodes
Journal of Hazardous Materials, 2017Co-Authors: K. Bensadok, S Benammar, Francois Lapicque, G. NezzalAbstract:The treatment of very concentrated Oil-water emulsions by electrocoagulation (EC) was experimentally investigated as a pre-treatment step prior to a membrane process. The Oil-water emulsion was prepared from a Cutting mineral Oil B22 currently used for drilling and machining operations. The electrocoagulation progress was followed by the measurement of COD, turbidity and pH in a batch process with recirculation of the liquid. This study is mainly focused on the effects of operating parameters such as initial pH, current density, Oil concentration and recirculation rate, on the de-emulsification efficiency. Kinetic curves showed that the EC process exhibits two phases: a "reactive phase" during which the COD and the turbidity removals increase with electrolysis, and a stationary phase for which further aluminium dissolution is useless in the pollution abatement. The results showed that the treatment efficiency increases with increasing current density, but decreases with Oil concentration. It appears that treatment of the considered Cutting Oil is completed through dissolution of around 10mgAl/g Oil, with a slight positive effect of the liquid flow rate. Best results are also obtained with initial pH near 7.
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Electrocoagulation of Cutting Oil emulsions using aluminium plate electrodes
Journal of Hazardous Materials, 2017Co-Authors: K. Bensadok, S Benammar, Francois Lapicque, G. NezzalAbstract:The treatment of very concentrated Oil-water emulsions by electrocoagulation (EC) was experimentally investigated as a pre-treatment step prior to a membrane process. The Oil-water emulsion was prepared from a Cutting mineral Oil B22 currently used for drilling and machining operations. The electrocoagulation progress was followed by the measurement of COD, turbidity and pH in a batch process with recirculation of the liquid. This study is mainly focused on the effects of operating parameters such as initial pH, current density, Oil concentration and recirculation rate, on the de-emulsification efficiency. Kinetic curves showed that the EC process exhibits two phases: a "reactive phase" during which the COD and the turbidity removals increase with electrolysis, and a stationary phase for which further aluminium dissolution is useless in the pollution abatement. The results showed that the treatment efficiency increases with increasing current density, but decreases with Oil concentration. It appears that treatment of the considered Cutting Oil is completed through dissolution of around 10mgAl/g Oil, with a slight positive effect of the liquid flow rate. Best results are also obtained with initial pH near 7.
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treatment of Cutting Oil water emulsion by coupling coagulation and dissolved air flotation
Desalination, 2007Co-Authors: K. Bensadok, M Belkacem, G. NezzalAbstract:Abstract On a purely comparative basis with former studies, the physicochemical treatment of Cutting Oil emulsion was applied to two different mineraI Oils ( A and B). The preliminary tests of destabilization showed that the sulphuric acid and the ferric chloride do not allow an appreciable destabilization for emulsion prepared Oil A, whereas for the Oil B, only the calcium chloride was effective. The kinetics of separation, arises in the decreasing exponential form and shows an optimal amount in coagulant agent dose. It is noticed that the turbidity of the Cutting Oil emulsions of Oil A are more significant than Oil B. For the same concentration, in consequence of an unquestionable difference in their composition. Whatever the type of Oil used, the calcium chloride gives a better effectiveness of separation, and reduction in turbidity. Also, the emulsions prepared with Oil B are more stable, quality desired by the users, but as more easily destabilized and treated than Oil A; the reduction of turbidity equalizes to 99%. Although the chemical treatment decreases in a considerable way, the organic load of the emulsions (Oil-water), the residual COD remains significant. To this end, the study of the coupling dissolved air flotation (DAF), with the chemicaI treatment was carried out. An average diameter of air micro bubbles (50 μm) obtained for a saturation pressure equal to 6.5 bars, gives place to an optimal flotation effectiveness. These results show the difficulties of treating worm water as emulsions Oil-water, which requires the coupling of several processes to obtain a quality of rejection in conformity with the standard values.
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Treatment of Cutting Oil/water emulsion by coupling coagulation and dissolved air flotation
Desalination, 2007Co-Authors: K. Bensadok, Mohamed Belkacem, G. NezzalAbstract:Abstract On a purely comparative basis with former studies, the physicochemical treatment of Cutting Oil emulsion was applied to two different mineraI Oils ( A and B). The preliminary tests of destabilization showed that the sulphuric acid and the ferric chloride do not allow an appreciable destabilization for emulsion prepared Oil A, whereas for the Oil B, only the calcium chloride was effective. The kinetics of separation, arises in the decreasing exponential form and shows an optimal amount in coagulant agent dose. It is noticed that the turbidity of the Cutting Oil emulsions of Oil A are more significant than Oil B. For the same concentration, in consequence of an unquestionable difference in their composition. Whatever the type of Oil used, the calcium chloride gives a better effectiveness of separation, and reduction in turbidity. Also, the emulsions prepared with Oil B are more stable, quality desired by the users, but as more easily destabilized and treated than Oil A; the reduction of turbidity equalizes to 99%. Although the chemical treatment decreases in a considerable way, the organic load of the emulsions (Oil-water), the residual COD remains significant. To this end, the study of the coupling dissolved air flotation (DAF), with the chemicaI treatment was carried out. An average diameter of air micro bubbles (50 μm) obtained for a saturation pressure equal to 6.5 bars, gives place to an optimal flotation effectiveness. These results show the difficulties of treating worm water as emulsions Oil-water, which requires the coupling of several processes to obtain a quality of rejection in conformity with the standard values.
Jordao Gheller - One of the best experts on this subject based on the ideXlab platform.
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performance of the jatropha vegetable base soluble Cutting Oil as a renewable source in the aluminum alloy 7050 t7451 milling
Cirp Journal of Manufacturing Science and Technology, 2014Co-Authors: Carlos Alberto Schuch Bork, Janaina Fracaro De Souza Goncalves, Jefferson De Oliveira Gomes, Jordao GhellerAbstract:Abstract This article aimed at collecting data on the performance of a new product – the jatropha vegetable-base soluble Cutting Oil – in relation to other canola Oils (vegetable), synthetic (jatropha ester), and the semisynthetic (mineral) traditionally used in the industry in high feed milling of the aluminum alloy 7050-T7451 for the production of aeronautical structures. Thus, information on requisites, restrictions, and machinability criteria for the Cutting Oils were analyzed. It was observed that the jatropha Cutting Oil presented the best results in relation to requirements for lubrication, superficial mean roughness index Ra, and shape errors, which were measured in the milling part. It also offered an increase in the life-span of the Cutting tool that exceeded in approximately 30% the other Cutting Oils analyzed here. The jatropha (vegetable) Oil, in relation to its physicochemical properties, appeared to be the best one fit for being used in the machining of aluminum alloys 7050-T7451 because it did not interfere with any of the elements involved in the formation of intergranular corrosion and/or pitting, which are not allowed in the aeronautical production of parts. Jatropha (vegetable) Cutting Oil, besides being produced from a clean and renewable source, has the inherent characteristics that can help attain a sustainable manufacturing.
K. Bensadok - One of the best experts on this subject based on the ideXlab platform.
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Electrocoagulation of Cutting Oil emulsions using aluminium plate electrodes
Journal of Hazardous Materials, 2017Co-Authors: K. Bensadok, S Benammar, Francois Lapicque, G. NezzalAbstract:The treatment of very concentrated Oil-water emulsions by electrocoagulation (EC) was experimentally investigated as a pre-treatment step prior to a membrane process. The Oil-water emulsion was prepared from a Cutting mineral Oil B22 currently used for drilling and machining operations. The electrocoagulation progress was followed by the measurement of COD, turbidity and pH in a batch process with recirculation of the liquid. This study is mainly focused on the effects of operating parameters such as initial pH, current density, Oil concentration and recirculation rate, on the de-emulsification efficiency. Kinetic curves showed that the EC process exhibits two phases: a "reactive phase" during which the COD and the turbidity removals increase with electrolysis, and a stationary phase for which further aluminium dissolution is useless in the pollution abatement. The results showed that the treatment efficiency increases with increasing current density, but decreases with Oil concentration. It appears that treatment of the considered Cutting Oil is completed through dissolution of around 10mgAl/g Oil, with a slight positive effect of the liquid flow rate. Best results are also obtained with initial pH near 7.
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Electrocoagulation of Cutting Oil emulsions using aluminium plate electrodes
Journal of Hazardous Materials, 2017Co-Authors: K. Bensadok, S Benammar, Francois Lapicque, G. NezzalAbstract:The treatment of very concentrated Oil-water emulsions by electrocoagulation (EC) was experimentally investigated as a pre-treatment step prior to a membrane process. The Oil-water emulsion was prepared from a Cutting mineral Oil B22 currently used for drilling and machining operations. The electrocoagulation progress was followed by the measurement of COD, turbidity and pH in a batch process with recirculation of the liquid. This study is mainly focused on the effects of operating parameters such as initial pH, current density, Oil concentration and recirculation rate, on the de-emulsification efficiency. Kinetic curves showed that the EC process exhibits two phases: a "reactive phase" during which the COD and the turbidity removals increase with electrolysis, and a stationary phase for which further aluminium dissolution is useless in the pollution abatement. The results showed that the treatment efficiency increases with increasing current density, but decreases with Oil concentration. It appears that treatment of the considered Cutting Oil is completed through dissolution of around 10mgAl/g Oil, with a slight positive effect of the liquid flow rate. Best results are also obtained with initial pH near 7.
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treatment of Cutting Oil water emulsion by coupling coagulation and dissolved air flotation
Desalination, 2007Co-Authors: K. Bensadok, M Belkacem, G. NezzalAbstract:Abstract On a purely comparative basis with former studies, the physicochemical treatment of Cutting Oil emulsion was applied to two different mineraI Oils ( A and B). The preliminary tests of destabilization showed that the sulphuric acid and the ferric chloride do not allow an appreciable destabilization for emulsion prepared Oil A, whereas for the Oil B, only the calcium chloride was effective. The kinetics of separation, arises in the decreasing exponential form and shows an optimal amount in coagulant agent dose. It is noticed that the turbidity of the Cutting Oil emulsions of Oil A are more significant than Oil B. For the same concentration, in consequence of an unquestionable difference in their composition. Whatever the type of Oil used, the calcium chloride gives a better effectiveness of separation, and reduction in turbidity. Also, the emulsions prepared with Oil B are more stable, quality desired by the users, but as more easily destabilized and treated than Oil A; the reduction of turbidity equalizes to 99%. Although the chemical treatment decreases in a considerable way, the organic load of the emulsions (Oil-water), the residual COD remains significant. To this end, the study of the coupling dissolved air flotation (DAF), with the chemicaI treatment was carried out. An average diameter of air micro bubbles (50 μm) obtained for a saturation pressure equal to 6.5 bars, gives place to an optimal flotation effectiveness. These results show the difficulties of treating worm water as emulsions Oil-water, which requires the coupling of several processes to obtain a quality of rejection in conformity with the standard values.
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Treatment of Cutting Oil/water emulsion by coupling coagulation and dissolved air flotation
Desalination, 2007Co-Authors: K. Bensadok, Mohamed Belkacem, G. NezzalAbstract:Abstract On a purely comparative basis with former studies, the physicochemical treatment of Cutting Oil emulsion was applied to two different mineraI Oils ( A and B). The preliminary tests of destabilization showed that the sulphuric acid and the ferric chloride do not allow an appreciable destabilization for emulsion prepared Oil A, whereas for the Oil B, only the calcium chloride was effective. The kinetics of separation, arises in the decreasing exponential form and shows an optimal amount in coagulant agent dose. It is noticed that the turbidity of the Cutting Oil emulsions of Oil A are more significant than Oil B. For the same concentration, in consequence of an unquestionable difference in their composition. Whatever the type of Oil used, the calcium chloride gives a better effectiveness of separation, and reduction in turbidity. Also, the emulsions prepared with Oil B are more stable, quality desired by the users, but as more easily destabilized and treated than Oil A; the reduction of turbidity equalizes to 99%. Although the chemical treatment decreases in a considerable way, the organic load of the emulsions (Oil-water), the residual COD remains significant. To this end, the study of the coupling dissolved air flotation (DAF), with the chemicaI treatment was carried out. An average diameter of air micro bubbles (50 μm) obtained for a saturation pressure equal to 6.5 bars, gives place to an optimal flotation effectiveness. These results show the difficulties of treating worm water as emulsions Oil-water, which requires the coupling of several processes to obtain a quality of rejection in conformity with the standard values.
Hironori Matsuoka - One of the best experts on this subject based on the ideXlab platform.
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Influence of Water-Miscible Cutting Fluids on Tool Wear Behavior of Different Coated HSS Tools in Hobbing
Mechanical Engineering Research, 2018Co-Authors: Hironori Matsuoka, Hajime Ono, Takahiro Ryu, Akio Kubo, Hua Qiu, Takashi NakaeAbstract:The present paper describes the influence of water-miscible Cutting fluids on tool life (flank wear) and crater wear of various coated Cutting tools and finished surface roughness, as compared with the cases of dry Cutting and wet Cutting using Cutting Oil in hobbing in an attempt to improve the working environment. Experiments were conducted by simulating hobbing by fly tool Cutting on a milling machine. The following results were obtained. (1) In the case of an uncoated tool, Cutting Oil was more effective than dry Cutting in reducing flank wear. Cutting Oil and water-miscible Cutting fluids were more effective in reducing flank wear than dry Cutting using TiN- and TiAlN-coated tools. The use of water-miscible Cutting fluids in conjunction with TiSiN- and AlCrSiN-coated tools prolongs tool life. (2) For all coated tools, the use of Cutting Oil or water-miscible Cutting fluids were effective in reducing crater wear. Especially, water-miscible Cutting fluids were effective for TiSiN- and AlCrSiN-coated tools. (3) Regarding the finished surface roughness, in the case of dry Cutting, the finished surface roughness was similar for various types of coating films. When using Cutting Oil or a water-miscible Cutting fluid, the finished surface roughness improved compared with dry Cutting, independent of the type of coating film applied. The finished surface roughness obtained using water-miscible Cutting fluid was approximately the same as or smaller than that obtained using Cutting Oil. (4) With respect to flank wear, crater wear, and finished surface roughness, the water-miscible Cutting fluid of emulsion type containing a large amount of synthetic lubricating additives was suitable for the AlCrSiN-coated tool.
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Influence of water-miscible Cutting fluid on tool wear behavior of various coated high-speed steel tools in hobbing
2017Co-Authors: Yuta Sato, Hironori Matsuoka, Hajime Ono, Takahiro Ryu, Takashi Nakae, Akio Kubo, Hua Qiu, Shuichi Shuto, Suguru Watanabe, Ruito AnanAbstract:This paper deals with the influence of water-miscible Cutting fluid on tool life (flank wear) compared with that with dry Cutting and water-insoluble Cutting Oil in hobbing. Experiments were conducted by simulating hobbing by fly tool Cutting on a milling machine. The following results were clarified. (1) The water-miscible Cutting fluid used in the test prolongs the tool life for TiN-, TiAlN-, TiSiN- and AlCrSiN-coated tools in comparison with that obtained by dry Cutting and water-insoluble Cutting Oil. (2) It was presumed that the tool wear decreases and the tool life is improved by the lubrication effect of the synthetic lubrication additive, mineral Oil and sulfuric EP additive contained in the water-miscible Cutting fluid, and also by the cooling effect.
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Effect of Cutting Oil Viscosity on Tool Wear Reduction in Turning Using an MQL System
Advances in Materials Science and Applications, 2014Co-Authors: Hironori Matsuoka, Hajime Ono, Takahiro Ryu, Takashi Nakae, Shuuichi Shutou, Tsukuru KoderaAbstract:The present paper describes the influence of the viscosity of Cutting Oil on tool wear and the roughness of the finished surface when using a cemented carbide tool in dry and minimal quantity lubrication (MQL) systems for turning. The following results were obtained. (1) At a feed rate of 0.2 mm/rev, the side flank boundary wear reduction effect was obtained with Cutting Oil having a low viscosity of 4.9 mm 2 /s in the MQL system, irrespective of Cutting speed. The front flank boundary wear increased in MQL compared to dry Cutting, and double boundary wear was observed. (2) At a feed rate of 0.4 mm/rev, Cutting Oil having a moderate viscosity of 9.3 mm 2 /s provided suitable side flank boundary wear, irrespective of Cutting speed. (3) The front flank boundary wear obtained using the MQL system was greater than that for dry Cutting. The transcription of the groove of this front flank boundary wear formed the finished surface roughness. KeywordsCutting; Turning; Dry; MQL; Viscosity Grade; Tool Wear; Finished Surface Roughness
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311 Fundamental Research on Hobbing with Minimal Quantity Lubrication of Cutting Oil : Comparison of Cutting performance with Dry Cutting
The Proceedings of Conference of Kyushu Branch, 2007Co-Authors: Hironori Matsuoka, Takahiro Ryu, Yoshihiro Tsuda, Yasuyuki Ishibe, Satoshi Suda, Hideo YokotaAbstract:This paper compares the Cutting performance of minimal quantity lubrication (MQL) system with dry Cutting in terms of flank wear, crater wear and finished surface roughness when using various kinds of Cutting tools. Experiments were conducted by simulating hobbing by fly tool Cutting on a milling machine. The results obtained are summarized as follows. (1) When using an uncoated tool, TiN- and (Al, Ti) N-coated tools without coating on the rake face, and fully TiN- and (Al, Ti) N-coated tools, MQL decreases the flank wear, crater wear and finished surface roughness compared with the wear and the roughness by dry Cutting, particularly at the high Cutting speed of 159 m/min. The reason suggested is the lubricating properties improved even with an extremely small quantity of Cutting Oil, which reduces the occurrence of deposited metal on the Cutting edge. (2) With both the fully TiN- and (Al, Ti) N-coated tools, the MQL system showed better Cutting performance in terms of reduced tool wear and reduced finished surface roughness compared with that by dry Cutting; in particular, the fully (Al, Ti) N-coated tool is suitable for an MQL system in hobbing.
Carlos Alberto Schuch Bork - One of the best experts on this subject based on the ideXlab platform.
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the jatropha curcas vegetable base soluble Cutting Oil as a renewable source in the machining of aluminum alloy 7050 t7451
Industrial Lubrication and Tribology, 2015Co-Authors: Carlos Alberto Schuch Bork, Janaina Fracaro De Souza Goncalves, Jefferson De Oliveira GomesAbstract:Purpose – This article aims to collect data on the aluminum alloy 7050-T7451 machinability used in the manufacturing of aeronautical structures, using the combination of the jatropha vegetable-base soluble Cutting Oil in relation to the canola vegetal and semisynthetic mineral Oils and the technique to apply Cutting fluid by flood in relation to the Minimum Quantity Lubrication (MQL) in the milling process (HSM – high-speed machining). Design/methodology/approach – It was observed that the jatropha vegetal Cutting Oil presented the best results in relation to requirements for lubrication, superficial mean roughness (index Ra) and shape errors in relation to the other Oils in both the techniques to apply fluid which were tested. Comparing the application techniques, the jatropha vegetal Oil offered an increase in the life span of the Cutting tool, using the flood technique, exceeding in almost six times the machined length of the Cutting tool in relation to the MQL technique in the same process conditions....
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performance of the jatropha vegetable base soluble Cutting Oil as a renewable source in the aluminum alloy 7050 t7451 milling
Cirp Journal of Manufacturing Science and Technology, 2014Co-Authors: Carlos Alberto Schuch Bork, Janaina Fracaro De Souza Goncalves, Jefferson De Oliveira Gomes, Jordao GhellerAbstract:Abstract This article aimed at collecting data on the performance of a new product – the jatropha vegetable-base soluble Cutting Oil – in relation to other canola Oils (vegetable), synthetic (jatropha ester), and the semisynthetic (mineral) traditionally used in the industry in high feed milling of the aluminum alloy 7050-T7451 for the production of aeronautical structures. Thus, information on requisites, restrictions, and machinability criteria for the Cutting Oils were analyzed. It was observed that the jatropha Cutting Oil presented the best results in relation to requirements for lubrication, superficial mean roughness index Ra, and shape errors, which were measured in the milling part. It also offered an increase in the life-span of the Cutting tool that exceeded in approximately 30% the other Cutting Oils analyzed here. The jatropha (vegetable) Oil, in relation to its physicochemical properties, appeared to be the best one fit for being used in the machining of aluminum alloys 7050-T7451 because it did not interfere with any of the elements involved in the formation of intergranular corrosion and/or pitting, which are not allowed in the aeronautical production of parts. Jatropha (vegetable) Cutting Oil, besides being produced from a clean and renewable source, has the inherent characteristics that can help attain a sustainable manufacturing.
