Theoretical analysis of bimetallic rods extrusion process in double reduction die

Berski, S.; Dyja, H.; Banaszek, G.; Janik, M.

doi:10.1016/j.jmatprotec.2004.04.052

Cited by 20 publications

(14 citation statements)

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“…By joining different materials (e.g., metallic), it is possible to obtain products that possess the combined properties of its base components [1][2][3][4][5][6][7]. On the aluminum scrap market, waste in the form of foils, blisters, and different kinds of metal dust represents a significant share.…”

Section: Introductionmentioning

confidence: 99%

“…An additional advantage of the solid bonding technology is the manufacturing of final and semi-final products in just one operation. In the literature, a series of articles can be found concerning the solid bonding of materials like powders, chips, and Al-Cu composites by sintering [3], cold rolling [4,5], or extrusion [6][7][8][9][10]. According to many publications, Al matrix composites with the addition of Cu powder are characterized not only by low density but also increased heat conduction and good corrosion resistance [1,[9][10][11].…”

Section: Introductionmentioning

confidence: 99%

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Possibility of Al-Cu Composite Manufacturing From Fine Metal Fractions by Recycling Process

Wzorek

Wędrychowicz

Wiewióra

et al. 2017

mafe

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Possibility of Al-Cu composite manufacturing from fine metal fractions by recycling processOkreślenie możliwości wytwarzania kompozytów Al-Cu w procesie recyklingu drobnych frakcji metali AbstractPlastic consolidation of highly fragmented materials is a cost-effective way to recover aluminum alloys. In this process, metal in the form of chips, powders, or ribbons omits the melting step that is typical for conventional scrap recycling; by that, it significantly reduces both energy expenses and material losses. By reducing the number of operations, the cost of labor and expenditures on environmental protection can be decreased. In addition, the solid bonding of metals in highly dispersed forms allows us to create heterogeneous structures that could be difficult to obtain in traditional processes. In the present study, the influence of the addition of Cu powder (99.7 wt.%) on the bonding quality of aluminum powder (99.7 wt.%) during hot extrusion is being examined. The examined materials contained aluminum powder with the addition of 5 wt.% of Cu powder. The mixture of these powders were cold compacted to produce an 80-mm-long charge for the extrusion process. Plastic consolidation was conducted at three different temperatures: 300°, 350°, and 400°C. As a result, rods 8 mm in diameter were obtained. Mechanical tests combined with microstructure observations and electrical conductivity tests were performed for the as-extruded materials. Keywords: aluminum, copper, powder, plastic consolidation, electrical conductivity, Al-Cu composite Streszczenie Konsolidacja plastyczna silnie rozdrobnionych form materiałów jest ekonomicznie opłacalnym sposobem odzysku stopów aluminium. W procesie tym pomija się etap topienia, który jest integralną częścią recyklingu konwencjonalnego złomów metali takich jak wióry, proszki i taśmy. Umożliwia

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Possibility of Al-Cu Composite Manufacturing From Fine Metal Fractions by Recycling Process

Wzorek

Wędrychowicz

Wiewióra

et al. 2017

mafe

View full text Add to dashboard Cite

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“…Most previous investigations in bulk-forming bimetallic components have focused mainly on cold forming, especially cold extrusion for rods [19][20][21] and tubes [22][23][24] as well as cold rolling for strips. 25,26 Even though Raßbach and Lehnert 27 studied warmupsetting of bimetals, their study was carried out at a constant temperature and the changes of temperature of the workpieces were not considered.…”

Section: Introductionmentioning

confidence: 99%

Bulk-Forming Simulation of Bimetallic Watchcase Components

Kong

Chan

2014

JOM

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This article presents a study of the effects of process parameters in bulkforming bimetallic watchcase components using finite-element (FE) simulation. This study aimed to determine the suitable forming temperature T and ram speed S for attaining the complete die filling of bimetals. A complicated watchcase component made of 3-mm-thick AISI 316L stainless steel (SS316L) and 6-mm-thick 6063 aluminum alloy (AA6063) was used as the example. The processes were simulated with T of 400°C, 500°C, 600°C, 700°C, 800°C, and 900°C and S of 20 mm/s, 40 mm/s, and 60 mm/s. Although the AA6063 was not heated in the beginning, it flowed faster than the SS316L during the process, and hence, the incomplete die filling was found mainly in the SS316L region. To avoid the incomplete die filling and strengthen the intermetallic bond between two dissimilar metals, the T of 900°C was suggested. The S of 40 mm/s was recommended also because this could save much forming energy and prevent the damage of tools. The experimental verification was carried out under process conditions that were employed in the simulations. An infrared thermal imaging camera and a 300-ton mechanical press were used to monitor the T and testify the bulk-forming operation, respectively. The data acquired from the experiments, on average, agreed strongly with those predicted by the simulations. On the basis of the results in this study, engineers can gain a better understanding of bulk-forming bimetallic components and be able to determine the T and S efficiently for similar processes.

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“…An analysis was made by Avitzur to determine the proper combination of process variables to provide homogeneous deformation to the core and sleeve for single phase wires [3]. Berski analyzed theoretically the bimetallic rods composed from two different metals [4]. The finite element method has been used to simulate the complicated deformation patterns of composite materials [5,6].…”

Section: Introductionmentioning

confidence: 99%