The Experts below are selected from a list of 81 Experts worldwide ranked by ideXlab platform
A. Erman Tekkaya - One of the best experts on this subject based on the ideXlab platform.
-
Direct recycling of 1050 aluminum alloy Scrap Material mixed with 6060 aluminum alloy chips by hot extrusion
International Journal of Material Forming, 2010Co-Authors: V. Güley, N. Ben Khalifa, A. Erman TekkayaAbstract:In this paper, a method for the direct recycling of aluminum Scrap by hot extrusion is investigated. 1050 aluminum alloy Material in the form of pins remained as Scrap after a lateral extrusion process and was mixed with 6060 aluminum alloy chips resulting from a turning operation. Contrary to the conventional method of re-melting aluminum Scrap to produce secondary aluminum, this aluminum Scrap+chip mixture was cold compacted into billets and hot extruded at 500°C to full rectangular profiles. The extruded profiles were examined by tensile tests and microstructural investigations and compared to the conventionally extruded profiles from as-cast Material. It was shown that not only the aluminum chips but also the aluminum Scrap Material can be recycled directly by hot extrusion, which requires only ∼10% of the energy required for recycling by re-melting. Also, the profiles extruded from billets containing 1050 aluminum alloy Scrap with and without cooling lubricant were compared and a deteriorating effect was determined.
-
hot profile extrusion of aa 6060 aluminum chips
Journal of Materials Processing Technology, 2009Co-Authors: A. Erman Tekkaya, Dirk Biermann, Dirk Becker, Niels Hammer, M Schikorra, Klaus PantkeAbstract:Abstract Analyses of energy consumption in manufacturing processes have shown that most of the energy is needed for the production of Material such as aluminum or steel and not for further manufacturing steps like forming or cutting. To reduce energy consumption and also a reduction of CO 2 emissions in manufacturing processes, a reduction of the amount of primary Material, made from first melting after mining, as well as secondary Material, made from melting of recycled Scrap Material, is needed. In this work, the re-use of aluminum AA-6060 Scrap based on milling and turning chips, by direct hot extrusion is presented. To prevent further use of primary aluminum or melting of the chips the process aims at using compacted chips as billet Material. The production of the chips as well as the compaction of billets, the extrusion process and the properties of the final profile is presented. In addition to the use of chips based on one alloy the mixture and extrusion of aluminum and SiC particles is presented. The investigations have shown that using billets made of AA-6060 chips can lead to similar mechanical and microstructural properties as using of conventional cast aluminum billets. Investigations on an additional cutting or drilling of the extruded profiles have shown even improved properties due to a reduced chip length.
Klaus Pantke - One of the best experts on this subject based on the ideXlab platform.
-
hot profile extrusion of aa 6060 aluminum chips
Journal of Materials Processing Technology, 2009Co-Authors: A. Erman Tekkaya, Dirk Biermann, Dirk Becker, Niels Hammer, M Schikorra, Klaus PantkeAbstract:Abstract Analyses of energy consumption in manufacturing processes have shown that most of the energy is needed for the production of Material such as aluminum or steel and not for further manufacturing steps like forming or cutting. To reduce energy consumption and also a reduction of CO 2 emissions in manufacturing processes, a reduction of the amount of primary Material, made from first melting after mining, as well as secondary Material, made from melting of recycled Scrap Material, is needed. In this work, the re-use of aluminum AA-6060 Scrap based on milling and turning chips, by direct hot extrusion is presented. To prevent further use of primary aluminum or melting of the chips the process aims at using compacted chips as billet Material. The production of the chips as well as the compaction of billets, the extrusion process and the properties of the final profile is presented. In addition to the use of chips based on one alloy the mixture and extrusion of aluminum and SiC particles is presented. The investigations have shown that using billets made of AA-6060 chips can lead to similar mechanical and microstructural properties as using of conventional cast aluminum billets. Investigations on an additional cutting or drilling of the extruded profiles have shown even improved properties due to a reduced chip length.
Lianqi Zhang - One of the best experts on this subject based on the ideXlab platform.
-
recovery and heat treatment of the li ni1 3co1 3mn1 3 o2 cathode Scrap Material for lithium ion battery
Journal of Power Sources, 2013Co-Authors: Dawei Song, Enlou Zhou, Peiyu Hou, Fenxia Guo, Xiaoqing Wang, Lianqi ZhangAbstract:Abstract Sintering method and solvent method are used to recover Li(Ni 1/3 Co 1/3 Mn 1/3 )O 2 Scrap Materials, and the effects of recovery methods and heat treatment on the electrochemical performances for Li-ion battery are investigated in detail. Among these recovered Scrap Materials, the unheat-treated ones with solvent method display the best electrochemical performances, the discharge capacity and the cycle life are close to that of the unused Li(Ni 1/3 Co 1/3 Mn 1/3 )O 2 raw Material. Particle size distribution, tap density and recovery rate of Scrap Materials are also investigated. In addition, acetylene black and Al foil can be recovered at the same time with solvent method.
Dirk Biermann - One of the best experts on this subject based on the ideXlab platform.
-
hot profile extrusion of aa 6060 aluminum chips
Journal of Materials Processing Technology, 2009Co-Authors: A. Erman Tekkaya, Dirk Biermann, Dirk Becker, Niels Hammer, M Schikorra, Klaus PantkeAbstract:Abstract Analyses of energy consumption in manufacturing processes have shown that most of the energy is needed for the production of Material such as aluminum or steel and not for further manufacturing steps like forming or cutting. To reduce energy consumption and also a reduction of CO 2 emissions in manufacturing processes, a reduction of the amount of primary Material, made from first melting after mining, as well as secondary Material, made from melting of recycled Scrap Material, is needed. In this work, the re-use of aluminum AA-6060 Scrap based on milling and turning chips, by direct hot extrusion is presented. To prevent further use of primary aluminum or melting of the chips the process aims at using compacted chips as billet Material. The production of the chips as well as the compaction of billets, the extrusion process and the properties of the final profile is presented. In addition to the use of chips based on one alloy the mixture and extrusion of aluminum and SiC particles is presented. The investigations have shown that using billets made of AA-6060 chips can lead to similar mechanical and microstructural properties as using of conventional cast aluminum billets. Investigations on an additional cutting or drilling of the extruded profiles have shown even improved properties due to a reduced chip length.
Niels Hammer - One of the best experts on this subject based on the ideXlab platform.
-
hot profile extrusion of aa 6060 aluminum chips
Journal of Materials Processing Technology, 2009Co-Authors: A. Erman Tekkaya, Dirk Biermann, Dirk Becker, Niels Hammer, M Schikorra, Klaus PantkeAbstract:Abstract Analyses of energy consumption in manufacturing processes have shown that most of the energy is needed for the production of Material such as aluminum or steel and not for further manufacturing steps like forming or cutting. To reduce energy consumption and also a reduction of CO 2 emissions in manufacturing processes, a reduction of the amount of primary Material, made from first melting after mining, as well as secondary Material, made from melting of recycled Scrap Material, is needed. In this work, the re-use of aluminum AA-6060 Scrap based on milling and turning chips, by direct hot extrusion is presented. To prevent further use of primary aluminum or melting of the chips the process aims at using compacted chips as billet Material. The production of the chips as well as the compaction of billets, the extrusion process and the properties of the final profile is presented. In addition to the use of chips based on one alloy the mixture and extrusion of aluminum and SiC particles is presented. The investigations have shown that using billets made of AA-6060 chips can lead to similar mechanical and microstructural properties as using of conventional cast aluminum billets. Investigations on an additional cutting or drilling of the extruded profiles have shown even improved properties due to a reduced chip length.