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论文类型：期刊论文

发表时间：2016-10-01

发表刊物：JOURNAL OF CLEANER PRODUCTION

收录刊物：SCIE、EI、Scopus

卷号：133

页面范围：1027-1033

ISSN号：0959-6526

关键字：Remanufacturing; Life cycle assessment; Environmental impact; Cylinder head; Laser cladding

摘要：Laser cladding is one of the principal means of equipment remanufacturing and the environmental profiles of this technology has become a research focus. This paper examines the environmental impacts of cast iron cylinder head block remanufacturing through laser cladding using life cycle assessment (LCA), and compares it with the new cylinder head block manufacturing. Resource and energy consumptions of each manufacturing and remanufacturing processes are collected along the production line and then the results of six selected environmental impact categories are calculated. Consistency and sensitivity analysis is also conducted after life cycle impact assessment. The results reveal that cylinder head remanufacturing by laser cladding will achieve large environmental benefits, which can cut environment impact over the entire life cycle by 63.8% on average. This paper also discusses the trend of changes in environmental impacts using scenario analysis over different remanufacturing levels. By taking characterized global warming potential (GWP) as the assessment index, the result shows that remanufacturing will no longer be the preferred option if it needs to repair more than 16 cracks by laser cladding for the cylinder head. (C) 2016 Elsevier Ltd. All rights reserved.