A reuse-oriented redesign method of used machine tool based on matter-element theory
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Remanufacturing
Machine tool
Remanufacturing is a new manufacturing mode in modern manufacturing environment. This paper had a survey on the uncertain problems in project-based remanufacturing system based on the analysis of the conception of project-based remanufacturing. On the basis, the uncertain problems in project-based remanufacturing systems, which including the uncertain factors, the description approaches for uncertain factors and the strategies to reduce the uncertain influence factors, was studied in detail based on the characteristic of project-based remanufacturing systems.
Remanufacturing
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A case of remanufacturing used lathes via CNC technology is introduced, whose environmental and economic benefits are evaluated respectively. The results indicate that these environmental and economic benefits are remarkable, which are directly affected by remanufacturing design, more than 90% materials in used lathes are reused. Finally, the causes of economic and environmental benefits of remanufacturing machine tools are put forward. The remanufacturing design method, implementation procedure, and evaluation method of economic and environmental benefits presented are helpful for other equipment remanufacturing.
Remanufacturing
Machine tool
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Remanufacturing
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A case of remanufacturing used lathes via CNC technology is introduced, whose environmental and economic benefits are evaluated respectively. The results indicate that these environmental and economic benefits are remarkable, which are directly affected by remanufacturing design, more than 90% materials in used lathes are reused. Finally, the causes of economic and environmental benefits of remanufacturing machine tools are put forward. The remanufacturing design method, implementation procedure, and evaluation method of economic and environmental benefits presented are helpful for other equipment remanufacturing.
Remanufacturing
Machine tool
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Automobiles' remanufacturing is studied from the view of circular economy.Four implementation ways for circular economy are analyzed,and the relation between remanufacturing and circular economy is discussed.The background and present situation of automobiles'remanufacturing are dissected from the angles of environment protection,laws and regulations,manufacturing enterprises' competing power and economic benefit.The value of automobiles' remanufacturing is analyzed by data and cases.The sections in automobiles' remanufacturing are pointed out.The problem and research directions for automobiles' remanufacturing in China are presented.
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Circular Economy
Value (mathematics)
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The overview of the main challenges and barriers related with the issues of reuse and remanufacturing of components from smart mobile devices were presented. The authors mainly focused on the current state of the art as well as the preliminary remarks from first investigation of the "sustainablySMART" H2020 project were presented. It was stated that both in reuse and remanufacturing processes of modern chips the main role plays: economic profitability of processes, environmental benefits and costs of processing needed for remanufacturing of components, as well as technical feasibility of components remanufacturing in the way enable their safe application in other products.
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Remanufacturing technology is an effective way to achieve the performance improvement of the used product,and establishing the improving and systematic remanufacturing technical system is the significant way to promote the technology level of remanufacturing industry.Along with the development of the remanufacturing industry,the technical system composed mainly of remanufacturing rapid shaping and processing technique,remanufacturing disassembled and cleaning technique,and remanufacturing nondestructive testing and life assessment technique has formed gradually.Combined with the remanufacturing technology and practical engineering application,twelve typical remanufacturing technologies and their applications in the equipment maintenance and remanufacturing engineering are introduced.
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ABSTRACTIn reducing waste and protecting natural resources benefits in a circular economy platform, performing remanufacturing tasks are complex, as it may be associated with costs such as investment, setup and disposal cost. Thus, many studies those aims to find the optimal number of remanufacturing has been investigated whether it is an infinite or a constant number of remanufacturing via trial-and-error method. During the investigation, the disposal rate is assumed as a fixed value for each unique case, which needs further focus. The current study aims to propose a novel decision model to figure out an optimal number of remanufacturing regarding to the various ratio of used units returned for recovery. The proposed model was extended in context of remanufacturing opportunities of PVC products. The obtained findings are useful for companies in managing remanufacturing processes by knowing optimal remanufacturing times, and results in enhanced economic–ecological–social gains in the circular economy.
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Circular Economy
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Remanufacturing is an important production activity, which is mainly driven by the increasingly strict environmental regulations imposed by governmental bodies, growing customers' awareness of green environment and potential economic benefits of remanufacturing. In this paper, the key motivating factors for companies to engage in remanufacturing program are examined. The major sources for acquiring used-products and the subsequent markets for selling remanufactured products are also examined. More importantly, the generic-key remanufacturing processes are examined and the corresponding unique characteristics are highlighted. Four examples of remanufacturing process of different products are presented to demonstrate that exact number and sequence of remanufacturing process largely depended on the type of product being remanufactured. In sum, this paper presents an overview of used-products remanufacturing, which in many ways would benefit the general public, environment, manufacturers/remanufacturers, as well as researchers.
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Due to the variable end-of-life timing of remanufacturing cores, the failure condition of products' remanufacturing is uncertainty, with low efficient processes and high cost in remanufacturing procedure. With presenting the definition and content of the predecisional remanufacturing, timing matching method of decision-making in predecisional remanufacturing are proposed. Firstly, based on whole life cycle theory, considering the performance as the characteristic variable, which is influenced by the failure condition of key components, the multiple indicators of timing decision-making in remanufacturing are analysed, and the decion-maing method in predecisonal remanufacturing is proposed. Then with presenting principle of time matching, the timing matching method for the key parts is presented. Finally, with the instance of engine, the timing of predecisional remanufacturing for the key parts in engine is analysed and determined to verify the feasibility and effectiveness of the proposed method.
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