A review on remanufacture of dies and moulds

Chen, Changrong; Wang, Yan; Ou, Hengan; He, Yan; Tang, Xianzhi

doi:10.1016/j.jclepro.2013.09.014

Cited by 104 publications

(51 citation statements)

References 59 publications

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“…Nonetheless, the evidence for extended product life in manufacturing is demonstrably lacking: a 2008 survey among 36 of China's larger electrical and electronic manufacturers, for example, found little evidence of eco-design in their products (Su et al 2013: 217), whilst the Circular Economy Platform, hosted by the Ellen MacArthur Foundation, showcases just a few instances of product life thinking in action (and see too: Russell et al 2010;Chen et al 2014). At the Resource 2014…”

mentioning

confidence: 99%

Interrogating the circular economy: the moral economy of resource recovery in the EU

Gregson¹,

Crang²,

Fuller³

et al. 2015

Economy and Society

554

336

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Use policyThe full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-prot purposes provided that:• a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.Please consult the full DRO policy for further details. Sara Fuller is a lecturer in the Department of Environment and Geography at Macquarie University, Australia. Her research explores concepts and practices of justice and democracy in the field of environment, with empirical focus on grassroots, community and activist responses to climate change. Prior to joining Macquarie, she worked and conducted research in the UK and Hong Kong.2 AbstractThe concept of the circular economy has gained increasing prominence in academic, practitioner and policy circles and is linked to greening economies and sustainable development. However, the idea is more often celebrated than critically interrogated. Analysis shows the concept circulates as an idea and ideal, exemplified by industrial symbiosis and extended product life. Yet, its actual enactment is limited and fragile. Instead, circular economies are achieved mostly through global recycling networks which are the primary means by which wastes are recovered as resources. European policies eschew these circuits. Resource recovery through global recycling networks is regarded as a dirty and illegal trade. In its place, EU circular economies attempt to transform wastes to resources within the boundaries of the EU. Through an analysis of two case studies of resource recovery in the UK, we highlight the challenges that confront making circular economies within the EU, showing that these are borne of a conjuncture of politically created markets, material properties and morally defined materials circuits. We show resource recovery in the EU to be framed by moral economies, driven by discourses of ecological modernisation, environmental justice and resource (in)security, the last of which connects to China's resource-intensive development.

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mentioning

confidence: 99%

Interrogating the circular economy: the moral economy of resource recovery in the EU

Gregson¹,

Crang²,

Fuller³

et al. 2015

Economy and Society

554

336

View full text Add to dashboard Cite

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“…La is a surface-active element with a rather large atomic radius (the radius of lanthanum is 0.1877 nm). La reacts easily with other elements, such as oxygen, sulfur, nitrogen, and some stable compounds, such as Cr 3 NiB, CeFeSi, LaCrO 4 and LaNi 8 C 2 can be formed during laser cladding [26]. Part of the compound may float on the liquid phase before solidification and be cleaned off the cladding layer as slag.…”

Section: Analysis Of Grain Refinementmentioning

confidence: 99%

“…Laser cladding has been defined as a surface-coating technique which makes use of material with superior physical and chemical properties to protect the substrate from corrosion and abrasive wear even at extreme conditions during service [2,3]. Therefore, laser cladding has been developed for many years as a remanufacturing and sustainable manufacturing technique in industry [4,5].…”

Section: Introductionmentioning

confidence: 99%

Effect of rare earth oxide on the properties of laser cladding layer and machining vibration suppressing in side milling

Zhao

Sun

2014

Applied Surface Science

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“…When the property degradation occurs, the die and die holder will easily fracture under the effect of the cyclic mechanical loads. The brittle fractures caused by property degradation usually lead to catastrophic consequences, and the preventive actions are difficult to find comparing with other failure modes [7][8][9][10]. The large die holder studied in this paper is made of 55NiCrMoV7 hot-work tool steel, which is similar to 5CrNiMo in chemical composition except with higher content of Cr and V. Compared with 5CrNiMo, tool steel, which is similar to 5CrNiMo in chemical composition except with higher content of Cr and V. Compared with 5CrNiMo, the 55NiCrMoV7 has better hardenability and abrasion resistance.…”

Section: Introductionmentioning

confidence: 99%

Brittle Fracture Behaviors of Large Die Holders Used in Hot Die Forging

Zhang

Wang

Zhang

et al. 2017

Metals

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Brittle fracture of large forging equipment usually leads to catastrophic consequences. To avoid this kind of accident, the brittle fracture behaviors of a large die holder were studied by simulating the practical application. The die holder is used on the large die forging press, and it is made of 55NiCrMoV7 hot-work tool steel. Detailed investigations including mechanical properties analysis, metallographic observation, fractography, transmission electron microscope (TEM) analysis and selected area electron diffraction (SAED) were conducted. The results reveal that the material generated a large quantity of large size polyhedral M 23 C 6 (M: Fe and Cr mainly) and elongated M 3 C (M: Fe mainly) carbides along the martensitic lath boundaries when the die holder was recurrently tempered and water-cooled at 250 • C during the service. The large size carbides lead to the material embrittlement and impact toughness degradation, and further resulted in the brittle fracture of the die holder. Therefore, the operation specification must be emphasized to avoid the die holder being cooled by using water, which is aimed at accelerating the cooling.

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A review on remanufacture of dies and moulds

Cited by 104 publications

References 59 publications

Interrogating the circular economy: the moral economy of resource recovery in the EU

Interrogating the circular economy: the moral economy of resource recovery in the EU

Effect of rare earth oxide on the properties of laser cladding layer and machining vibration suppressing in side milling

Brittle Fracture Behaviors of Large Die Holders Used in Hot Die Forging

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