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首页> 外文期刊>Environmental Science & Technology >Material Flow Analysis with Multiple Material Characteristics to Assess the Potential for Flat Steel Prompt Scrap Prevention and Diversion without Remelting
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Material Flow Analysis with Multiple Material Characteristics to Assess the Potential for Flat Steel Prompt Scrap Prevention and Diversion without Remelting

机译:具有多种材料特性的材料流分析,可评估防止重熔而避免重熔的扁钢及时报废的潜力

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摘要

Thirty-two percent of the liquid metal used to make flat steel products in Europe does not end up in a final product. Sixty percent of this material is instead scrapped during manufacturing and the remainder during fabrication of finished steel products. Although this scrap is collected and recycled, remelting this scrap requires approximately 2 MWh/t, but some of this material could instead be diverted for use in other applications without remelting. However, this diversion depends not just on the mass of scrapped steel but also on its material characteristics. To enhance our understanding of the potential for such scrap diversion, this paper presents a novel material flow analysis of flat steel produced in Europe in 2013. This analysis considers the flow of steel characterized not only by mass but, for the first time, also by grade, thickness, and coating. The results show that thin-gauge galvanized drawing steel is the most commonly demanded steel grade across the industry, and most scrap of this grade is generated by the automotive industry. There are thus potential opportunities for preventing and diverting scrap of this grade. We discuss the role of the geometric compatibility of parts and propose tessellating blanks for various car manufacturers in the same coil of steel to increase the utilization rates of steel.
机译:在欧洲,用于制造扁钢产品的液态金属中有32%并未最终形成最终产品。取而代之的是,这种材料的60%在制造过程中报废,其余的则在成品钢的制造过程中报废。尽管这些废料被收集和回收利用,但对其进行重熔大约需要2 MWh / t,但是其中的某些材料可以在不重熔的情况下转移到其他应用中。但是,这种转移不仅取决于废钢的质量,还取决于其材料特性。为了增强我们对这种废钢转移潜力的理解,本文介绍了2013年在欧洲生产的扁钢的新型材料流分析。该分析考虑了不仅以质量为特征的钢流,而且首次以等级,厚度和涂层。结果表明,薄规格镀锌拉丝钢是整个行业中最常用的钢种,而该等级的大多数废料是由汽车工业产生的。因此,存在防止和转移此类废料的潜在机会。我们讨论了零件的几何兼容性的作用,并建议将各种汽车制造商的棋盘格坯料镶嵌在同一卷钢中,以提高钢的利用率。

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