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Light alloy machining is a widely implemented process that is usually used in the presence of cutting fluids to reduce wear and increase tool life. The use of coolants during machining presents negative environmental impacts, which has increased interest in reducing and even eliminating their use. In order to obtain ecofriendly machining processes, it will be necessary to suppress the use of cutting fluids, in a trend called “dry machining”. This fact forces machines to work under aggressive cutting conditions, producing adhesion wear that affects the integrity of the parts’ surfaces. This study describes cutting tool wear mechanisms in machining of UNS A92024 samples under dry cutting conditions. Energy dispersive spectroscopy (EDS) analysis shows the different compositions of the adhered layers. Roughness is also positively affected by the change of the cutting geometry produced in the tool.
Moises Batista; Irene Del Sol; Álvaro Gómez-Parra; Magdalena Ramirez-Peña; Jorge Salguero; Del Sol; Gomez- Parra; Ramirez- Peña. Study of the Tool Wear Process in the Dry Turning of Al–Cu Alloy. Metals 2019, 9, 1094 .
AMA StyleMoises Batista, Irene Del Sol, Álvaro Gómez-Parra, Magdalena Ramirez-Peña, Jorge Salguero, Del Sol, Gomez- Parra, Ramirez- Peña. Study of the Tool Wear Process in the Dry Turning of Al–Cu Alloy. Metals. 2019; 9 (10):1094.
Chicago/Turabian StyleMoises Batista; Irene Del Sol; Álvaro Gómez-Parra; Magdalena Ramirez-Peña; Jorge Salguero; Del Sol; Gomez- Parra; Ramirez- Peña. 2019. "Study of the Tool Wear Process in the Dry Turning of Al–Cu Alloy." Metals 9, no. 10: 1094.
Nowadays, the industry looks for sustainable processes to ensure a more environmentally friendly production. For that reason, more and more aeronautical companies are replacing chemical milling in the manufacture of skin panels and thin plates components. This is a challenging operation that requires meeting tight dimensional tolerances and differs from a rigid body machining due to the low stiffness of the part. In order to fill the gap of literature research on this field, this work proposes an experimental study of the effect of the depth of cut, the feed rate and the cutting speed on the quality characteristics of the machined parts and on the cutting forces produced during the process. Whereas surface roughness values meet the specifications for all the machining conditions, an appropriate cutting parameters selection is likely to lead to a reduction of the final thickness deviation by up to 40% and the average cutting forces by up to a 20%, which consequently eases the clamping system and reduces machine consumption. Finally, an experimental model to control the process quality based on monitoring the machine power consumption is proposed.
Irene Del Sol; Asuncion Rivero; Antonio J. Gamez. Effects of Machining Parameters on the Quality in Machining of Aluminium Alloys Thin Plates. Metals 2019, 9, 927 .
AMA StyleIrene Del Sol, Asuncion Rivero, Antonio J. Gamez. Effects of Machining Parameters on the Quality in Machining of Aluminium Alloys Thin Plates. Metals. 2019; 9 (9):927.
Chicago/Turabian StyleIrene Del Sol; Asuncion Rivero; Antonio J. Gamez. 2019. "Effects of Machining Parameters on the Quality in Machining of Aluminium Alloys Thin Plates." Metals 9, no. 9: 927.
Thin-wall parts are common in the aeronautical sector. However, their machining presents serious challenges such as vibrations and part deflections. To deal with these challenges, different approaches have been followed in recent years. This work presents the state of the art of thin-wall light-alloy machining, analyzing the problems related to each type of thin-wall parts, exposing the causes of both instability and deformation through analytical models, summarizing the computational techniques used, and presenting the solutions proposed by different authors from an industrial point of view. Finally, some further research lines are proposed.
Irene Del Sol; Asuncion Rivero; Luis Norberto López De Lacalle; Antonio Juan Gamez. Thin-Wall Machining of Light Alloys: A Review of Models and Industrial Approaches. Materials 2019, 12, 2012 .
AMA StyleIrene Del Sol, Asuncion Rivero, Luis Norberto López De Lacalle, Antonio Juan Gamez. Thin-Wall Machining of Light Alloys: A Review of Models and Industrial Approaches. Materials. 2019; 12 (12):2012.
Chicago/Turabian StyleIrene Del Sol; Asuncion Rivero; Luis Norberto López De Lacalle; Antonio Juan Gamez. 2019. "Thin-Wall Machining of Light Alloys: A Review of Models and Industrial Approaches." Materials 12, no. 12: 2012.
Dry machining of aluminum parts has been the most eco-friendly method in an attempt to reduce the use of mineral-based lubricants and other working fluids. The drawbacks of dry machining include an increase of contact temperatures and stresses leading to high values of tool wear and a decrease of the tool life. For this reason, more sustainable lubricants are needed as a middle point between waste generation and tool life. Since 2001, Ionic Liquids (ILs) have attracted interest as high-performance lubricants and lubricant additives. In this work, the lubricating ability of one halogen-containing and two halogen-free ILs used as additives in water has been investigated and compared to a halogen-containing cutting fluid (CF). Tests were performed using a pin-on-disk tribometer for aluminum-tungsten carbide pair. The worn surfaces of the disks and balls were analyzed by optical and scanning electron microscopies, non-contact 3D profilometry and energy dispersive X-ray spectroscopy. It was found that the addition of 1 wt% of one of the halogen-free ILs reduces friction and wear of both aluminum disks and ceramic balls with respect to dry or water-lubricated conditions. In addition, no wear was detected on the ball surface, therefore increasing the tool life compared to the CF.
I. Del Sol; A.J. Gámez; A. Rivero; P. Iglesias. Tribological performance of ionic liquids as additives of water-based cutting fluids. Wear 2019, 426-427, 845 -852.
AMA StyleI. Del Sol, A.J. Gámez, A. Rivero, P. Iglesias. Tribological performance of ionic liquids as additives of water-based cutting fluids. Wear. 2019; 426-427 ():845-852.
Chicago/Turabian StyleI. Del Sol; A.J. Gámez; A. Rivero; P. Iglesias. 2019. "Tribological performance of ionic liquids as additives of water-based cutting fluids." Wear 426-427, no. : 845-852.
Laser micro-texturing processes, compared to untreated surfaces, can improve the friction, wear and wettability behavior of sliding parts. This improvement is related to the micro-geometry and the dimensions of the texture which is also dependent on the processing parameters. This research studied the effect of laser textured surfaces on the tribological behavior of titanium alloy Ti6Al4V. The influence of processing parameters was analyzed by changing the scanning speed of the beam and the energy density of pulse. First, the characterization of dimensional and geometrical features of the texturized tracks was carried out. Later, their influence on the wetting behavior was also evaluated through contact angle measurements using water as a contact fluid. Then, the tribological performance of these surfaces was analyzed using a ball-on-flat reciprocating tribometer under wet and dry conditions. Finally, wear mechanisms were identified employing electronic and optical microscopy techniques capable to evaluate the wear tracks on Ti surfaces and WC–Co spheres. These analyses had determined a strong dependence between the wear behavior and the laser patterning parameters. Wear friction effects were reduced by up to a 70% replacing conventional untreated surfaces of Ti6Al4V alloy with laser textured surfaces.
Juan Manuel Vazquez Martinez; Irene Del Sol Illana; Patricia Iglesias Victoria; Jorge Salguero. Assessment the Sliding Wear Behavior of Laser Microtexturing Ti6Al4V under Wet Conditions. Coatings 2019, 9, 67 .
AMA StyleJuan Manuel Vazquez Martinez, Irene Del Sol Illana, Patricia Iglesias Victoria, Jorge Salguero. Assessment the Sliding Wear Behavior of Laser Microtexturing Ti6Al4V under Wet Conditions. Coatings. 2019; 9 (2):67.
Chicago/Turabian StyleJuan Manuel Vazquez Martinez; Irene Del Sol Illana; Patricia Iglesias Victoria; Jorge Salguero. 2019. "Assessment the Sliding Wear Behavior of Laser Microtexturing Ti6Al4V under Wet Conditions." Coatings 9, no. 2: 67.
The incipient implementation of the Industry 4.0 paradigm has led to an increase in the machines sensoring level, in the processes optimization and, thus, in the product manufacturing with a higher added value. In this article a new aspect is described where, through the machine monitoring, the utilization of innovative elements as fixture is enabled for high quality machining processes. These innovative elements are characterized by the great flexibility offered by them as holding component and by their low costs. However, these elements lack the enough geometrical accuracy for applications where a high shape and surface quality product are needed. First of all, in order to have a clear vision of the singularities of each fixture type present on the state of the art, a nomenclature and a classification has been proposed based on their geometry characteristics. Hence, based on this classification, an analysis of the different fixturing solutions provided by the market has been made, enhancing the advantages of this solution against the existing ones. With the aim of demonstrating its suitability for certain machining applications, the behavior of these sort of flexible materials has been characterized. Besides, the sensors implementation has been analyzed in order to capacitate this solution for processes where tough tolerances on parts are demanded. Therefore, this survey demonstrates that, through the massive information gathering, not only an optimization of the existing technologies is obtained, but it is possible to develop innovative solutions that provide improved capacities to the already existing ones in the Industry. Keywords: Flexible fixtures, fixtures classification, elastomers characterization, laser technology, accurate machining, Industry 4.0.
Antonio Rubio-Mateos; Asun Rivero Rastrero; Irene Del Sol Illana; Eneko Ukar Arrien; Aitzol Lamikiz Mentxaka. CAPACITATION OF FLEXIBLES FIXTURES FOR ITS USE IN HIGH QUALITY MACHINING PROCESSES: AN APPLICATION CASE OF THE INDUSTRY 4.0. PARADIGM. DYNA 2018, 93, 608 -612.
AMA StyleAntonio Rubio-Mateos, Asun Rivero Rastrero, Irene Del Sol Illana, Eneko Ukar Arrien, Aitzol Lamikiz Mentxaka. CAPACITATION OF FLEXIBLES FIXTURES FOR ITS USE IN HIGH QUALITY MACHINING PROCESSES: AN APPLICATION CASE OF THE INDUSTRY 4.0. PARADIGM. DYNA. 2018; 93 (1):608-612.
Chicago/Turabian StyleAntonio Rubio-Mateos; Asun Rivero Rastrero; Irene Del Sol Illana; Eneko Ukar Arrien; Aitzol Lamikiz Mentxaka. 2018. "CAPACITATION OF FLEXIBLES FIXTURES FOR ITS USE IN HIGH QUALITY MACHINING PROCESSES: AN APPLICATION CASE OF THE INDUSTRY 4.0. PARADIGM." DYNA 93, no. 1: 608-612.
Adhesion wear is the main wear mechanism in the dry turning of aluminium alloys. This type of wear produces an adhesion of the machining material on the cutting tool, decreasing the final surface quality of the machining parts and making it more difficult to maintain industrial tolerances. This work studies the influence of the cutting parameters on the volume of material adhered to the cutting tool surface for dry machining of AA2024 (Al-Cu). For that purpose, a specific methodology based on the automatic image processing method that can obtain the area and the thickness of the adhered material has been designed. This methodology has been verified with the results obtained through 3D analysis techniques and compared with the adhered volume. The results provided experimental parametric models for this wear mechanism. These models are analytic approximations of experimental data. The feed rate mainly results in low cutting speed, while low depths of cut presents a different behaviour due to the low contact pressure. The unstable behaviour of aluminium adhesion on the cutting tool produces a high variability of results. This continuous change introduces variation in the process caused by the continuous change of the cutting tool geometry.
Moises Batista Ponce; Irene Del Sol Illana; Severo Raul Fernandez-Vidal; Jorge Salguero Gomez. Experimental Parametric Model for Adhesion Wear Measurements in the Dry Turning of an AA2024 Alloy. Materials 2018, 11, 1598 .
AMA StyleMoises Batista Ponce, Irene Del Sol Illana, Severo Raul Fernandez-Vidal, Jorge Salguero Gomez. Experimental Parametric Model for Adhesion Wear Measurements in the Dry Turning of an AA2024 Alloy. Materials. 2018; 11 (9):1598.
Chicago/Turabian StyleMoises Batista Ponce; Irene Del Sol Illana; Severo Raul Fernandez-Vidal; Jorge Salguero Gomez. 2018. "Experimental Parametric Model for Adhesion Wear Measurements in the Dry Turning of an AA2024 Alloy." Materials 11, no. 9: 1598.
One of the main criteria for the establishment of the performance of a forming process by material removal is based on cutting tool wear. Wear is usually caused by different mechanisms, however, only one is usually considered as predominant or the controller of the process. This experimental research is focused on the application of Pin-on-Disc wear tests, in which the tribological interference between UNS A92024-T3 Aluminum–Copper alloy and tungsten carbide (WC–Co) has been studied. The main objective of this study is focused on the determination of the predominant wear mechanisms involved in the process, as well as the characterization of the sliding and friction effects by using SEM and Energy Dispersion Spectroscopy (EDS) techniques, as applied to WC–Co (cutting tool material)/Al (workpiece material) which are widely used in the aerospace industry. Performed analysis prove the appearance of abrasive wear mechanisms prior to adhesion. This fact promotes adhesion mechanisms in several stages because of the surface quality deterioration, presenting different alloy composition in the form of a Built-Up Layer (BUL)/Built-Up Edge (BUE).
Jorge Salguero; Juan Manuel Vazquez-Martinez; Irene Del Sol; Moises Batista. Application of Pin-On-Disc Techniques for the Study of Tribological Interferences in the Dry Machining of A92024-T3 (Al–Cu) Alloys. Materials 2018, 11, 1236 .
AMA StyleJorge Salguero, Juan Manuel Vazquez-Martinez, Irene Del Sol, Moises Batista. Application of Pin-On-Disc Techniques for the Study of Tribological Interferences in the Dry Machining of A92024-T3 (Al–Cu) Alloys. Materials. 2018; 11 (7):1236.
Chicago/Turabian StyleJorge Salguero; Juan Manuel Vazquez-Martinez; Irene Del Sol; Moises Batista. 2018. "Application of Pin-On-Disc Techniques for the Study of Tribological Interferences in the Dry Machining of A92024-T3 (Al–Cu) Alloys." Materials 11, no. 7: 1236.
Ruben Montano-Vega; Moisés Batista Ponce; Francisco Jose Leon Arevalo; Raul Ruiz-Garcia; Luis Roldan Jimenez; Irene Del Sol Illana; Jorge Salguero Gomez. Preliminary Characterization of the Rivet Shaving Process. Proceedings of the 29th International DAAAM Symposium 2018 2018, 1116 -1124.
AMA StyleRuben Montano-Vega, Moisés Batista Ponce, Francisco Jose Leon Arevalo, Raul Ruiz-Garcia, Luis Roldan Jimenez, Irene Del Sol Illana, Jorge Salguero Gomez. Preliminary Characterization of the Rivet Shaving Process. Proceedings of the 29th International DAAAM Symposium 2018. 2018; ():1116-1124.
Chicago/Turabian StyleRuben Montano-Vega; Moisés Batista Ponce; Francisco Jose Leon Arevalo; Raul Ruiz-Garcia; Luis Roldan Jimenez; Irene Del Sol Illana; Jorge Salguero Gomez. 2018. "Preliminary Characterization of the Rivet Shaving Process." Proceedings of the 29th International DAAAM Symposium 2018 , no. : 1116-1124.