Recycling of contaminated metallic chip based on eco-efficiency and eco-effectiveness approaches

Simon, Luísa; Moraes, Carlos Alberto Mendes; Modolo, Regina Célia Espinosa; Vargas, Mónica María Machado; Calheiro, Daiane; Brehm, Feliciane Andrade

doi:10.1016/j.jclepro.2016.11.058

Cited by 33 publications

(16 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Acetone, a washing solvent commonly used for cleaning metallic chips, was utilized to clean the chips. Due to its ecofriendly approach, of course, it can also be implemented on the industrial level with some other processes such as stirring and then drying in the oven to further improve process effectiveness and reduce oxidation [38]. Then, the chips were charged in the die, finally compacted, and consolidated at 5 KN and 20 KN force, respectively.…”

Section: Methodsmentioning

confidence: 99%

A novel approach to enhance mechanical properties during recycling of aluminum alloy scrap through friction stir consolidation

Latif

Ingarao

Gucciardi

et al. 2021

Int J Adv Manuf Technol

View full text Add to dashboard Cite

Solid state recycling (SSR) is a new approach for making metals recycling more efficient with respect to remelting-based approaches. Friction stir consolidation (FSC) is a new solid-state process that is employed to recycle metallic scraps. Until now, a single-step FSC process was applied to recycled metal chips. During the single-step approach, critical processes parameters, especially processing time and rotational speed, are considered vital to control the quality and mechanical properties of the billet. However, the effectiveness of process parameters is highly restricted by challenging masses of recycling chips and machine competency. The present study first highlights the issues of the single-step FSC process, such as unconsolidated billet and poor mechanical properties at the bottom of the part, i.e., far away from the stirring action. Then, for the first time, three different two-step FSC methods were introduced as new approaches to overcome the existing challenges of the single-step method. The effectiveness of these methods was evaluated through the Vickers hardness measurements, and microstructure analysis. The results showed that two-step FSC methods successfully led to a fully consolidated billet and considerably improved mechanical properties.

show abstract

Section: Methodsmentioning

confidence: 99%

A novel approach to enhance mechanical properties during recycling of aluminum alloy scrap through friction stir consolidation

Latif

Ingarao

Gucciardi

et al. 2021

Int J Adv Manuf Technol

View full text Add to dashboard Cite

show abstract

“…In general, this integration is carried out by identifying the most significant methods or strategies used individually in the two approaches, to find a balance of results. There are a few examples: product design and manufacturing processes [4,[37][38][39][40], e-commerce [36], agriculture [41], energy life cycle [42] or buildings and construction [43][44][45][46][47]. In the specific case of industrial product projects, the two methodologies that are usually integrated are life cycle assessment (LCA) and cradle-to-cradle (C2C) techniques [4,47].…”

Section: Introductionmentioning

confidence: 99%

Weighting with Life Cycle Assessment and Cradle to Cradle: A Methodology for Global Sustainability Design

2021

View full text Add to dashboard Cite

Sustainable product design uses methodologies focused on eco-effectiveness and eco-efficiency for the proposal of innovative technological solutions and for the control of environmental impacts during the product life cycle. One of the main drawbacks of such techniques is their qualitative nature, associated with a decision-making process that is sometimes arbitrary, or with unverifiable data; this means that several complementary tools are currently being used to reduce the error in the results obtained. This situation makes the unification of procedures necessary. In this context, this research develops a methodology for the sustainable design of industrial products that integrates life cycle assessment (in its environmental, economic and social application) and cradle-to-cradle techniques. For this purpose, a new assessment process is proposed, based on damage, developing LCA+C2C endpoint indicators. The methodology is subsequently verified in a case study of products for sustainable mobility (city trike electric). The results show that an integrated LCA+C2C assessment can help to propose more balanced sustainable strategies and would be a suitable method to measure tradeoffs between economic, social and environmental results, for practical purposes and future redesigns. The unified method provides a procedure to design a solution with a trade-off between eco-efficient and eco-effective criteria; it also simplifies the design phases, facilitates the interpretation of the results and provides a quantitative scope to the cradle-to-cradle framework.

show abstract

“…This process contributes to intensive wear [2][3][4][5][6][7][8][9][10]. Authors [6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21] have analyzed the features of hydrogen wear of construction machine parts.…”

Section: Introduction State Of the Art And Problem Formulationmentioning

confidence: 99%

Wear Resistance of Spark Ignition Engine Piston Rings in Hydrogen-Containing Environments

et al. 2021

View full text Add to dashboard Cite

We describe the external and internal hydrogen iInteraction on contacting surfaces in the “cylinder–piston rings” friction coupling. Under the influence of high temperatures and pressure, the oil in the combustion chamber at a temperature up to 1473 K decomposes and forms small amounts of water. External hydrogen (H2) is subsequently formed. Hydrogen removal from the piston rings reduces the heterogeneity of the structure, residual stresses, and uneven physical and chemical properties of the near-surface layers, which reduces the stress concentration and, as a consequence, results in an improvement in the performance characteristics of the surface layers of the friction couple “cylinder-piston rings” of the spark ignition engine.

show abstract

Recycling of contaminated metallic chip based on eco-efficiency and eco-effectiveness approaches

Cited by 33 publications

References 15 publications

A novel approach to enhance mechanical properties during recycling of aluminum alloy scrap through friction stir consolidation

A novel approach to enhance mechanical properties during recycling of aluminum alloy scrap through friction stir consolidation

Weighting with Life Cycle Assessment and Cradle to Cradle: A Methodology for Global Sustainability Design

Wear Resistance of Spark Ignition Engine Piston Rings in Hydrogen-Containing Environments

Contact Info

Product

Resources

About