Potential Influences of Impurities on Properties of Recycled Carbon Steel

Ichiro DAIGO; Keijiro TAJIMA; Hideo HAYASHI; Daryna PANASIUK; Kentrao TAKEYAMA; Hideki ONO; Yoshinao KOBAYASHI; Kenichi NAKAJIMA; Takeo HOSHINO

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Potential Influences of Impurities on Properties of Recycled Carbon Steel

机译：杂质对再生碳钢性能的潜在影响

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Contamination with tramp elements is a major concern in steel recycling. This study aimed to identify the influence of impurity elements on the major properties of carbon steel. The content of impurity elements in recycled steel was determined via elemental analysis of randomly sampled steel bars. Of the 23 impurity elements considered, 15 were found to be mixed in the recycled steel. Industrial standards stipulate that the six major properties of carbon steel are tensile strength, elongation, yield point or proof stress, soundness in the welding area, fracture toughness, and bendability. The influence of the fifteen impurity elements on all of these properties except bendability was investigated by reviewing previous academic reports. Properties related to strength and stress were found to be enhanced by the presence of almost any impurity, while elongation and welding soundness were often compromised. The influence of impurities on the other properties remains largely unknown. The negative effects of impurities on the workability and weldability can be minimized by adjusting the steelmaking, casting, and annealing processes, or rethinking the design of products and manufacturing processes. Further, the incorporation of impurities may be prevented during the recovery of steel scrap from end-of-life products. A useful approach to the prevention of the negative influence of impurities is a new concept termed R-PSPR which stands for recovery, process, structure, property, and performance.

机译：用流浪汉元件的污染是钢回收的主要问题。本研究旨在识别杂质元素对碳钢主要性质的影响。通过随机采样钢筋的元素分析确定再循环钢中杂质元素的含量。在考虑的23个杂质元素中，发现15个被发现在再生钢中混合。工业标准规定，碳钢的六个主要性质是拉伸强度，伸长率，屈服点或耐受应力，焊接区域的声控，裂缝韧性和弯曲性。除了审查以前的学术报告，研究了十五个杂质元素对所有这些属性的影响。发现与强度和压力相关的性质通过几乎任何杂质的存在而增强，而伸长率和焊接声音经常受到损害。杂质对其他性质的影响仍然很大程度上是未知的。通过调节炼钢，铸造和退火过程，或重新思考产品和制造工艺的设计，可以最小化杂质对可加工性和可焊性的负面影响。此外，可以在从寿命终止产品中恢复钢废料期间掺入杂质。防止杂质负面影响的有用方法是一个新的概念，被称为R-PSPR，其代表恢复，过程，结构，财产和性能。

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来源
《ISIJ international》 |2021年第1期|498-505|共8页
作者
Ichiro DAIGO; Keijiro TAJIMA; Hideo HAYASHI; Daryna PANASIUK; Kentrao TAKEYAMA; Hideki ONO; Yoshinao KOBAYASHI; Kenichi NAKAJIMA; Takeo HOSHINO;
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作者单位

Graduate School of Engineering The University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo 113-8656 Japan;

Graduate School of Engineering The University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo 113-8656 Japan;

Tokyo Metropolitan Industrial Technology Research Institute 2-4-10 Aomi Koto-ku Tokyo 135-0064 Japan;

Graduate School of Engineering The University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo 113-8656 Japan;

Graduate School of Engineering The University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo 113-8656 Japan;

Faculty of Sustainable Design Academic Assembly University of Toyama 3190 Gofuku Toyama-shi Toyama 930-8555 Japan;

Institute of Innovation Research Tokyo Institute of Technology 2-12-1 Ookayama Meguro-ku Tokyo 152-8550 Japan;

National Institute for Environmental Studies Japan 16-2 Onogawa Tsukuba Ibaraki 305-8506 Japan;

Graduate School of Engineering The University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo 113-8656 Japan;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
原文格式 PDF
正文语种 eng
中图分类
关键词
tramp elements; recycled steel; degradation; R-PSPP; carbon steel properties;

机译：流浪点元素;再生钢;降解;R-PSPP;碳钢特性;

Potential Influences of Impurities on Properties of Recycled Carbon Steel

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