抄録
The disused car scrap with the copper wire etc. is crushed together, and dissolved in an electric furnace. The removal of copper from the steel scrap that is thus inevitably contained high copper is difficult. Because the copper causes surface hot-shortness during hot rolling of steel, it is usually considered as a harmful tramp element. In powder metallurgy, the processing of recycling copper rich scrap was studied. Although the obtained materials showed high strength, this processing is not cost-effective for high-volume production. Therefore, we focused on the conventional compacting-sintering in order to recycle high-copper steel scrap efficiently. The mixture of gas-atomized Fe-4mass%Cu powder, pure iron powder and graphite was compacted with the die wall lubricating method. The obtained green compacts were sintered at 1423 K for 1.8 ks in an argon atmosphere. The transverse rupture strength and sintered density were 50OMPa and 7.0 Mg/m 3 respectively though the pearlite was hardly observed compared with standard Fe-Cu-C type sintered materials. Thus there is still room for improvement in strength property of the alloyed powder mixture obtained from the conventional process. In conclusion, the possibility of high-copper scrap recycling using conventional powder metallurgy was found.
| 元の言語 | English |
|---|---|
| ページ（範囲） | 633-639 |
| ページ数 | 7 |
| ジャーナル | Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy |
| 巻 | 58 |
| 発行部数 | 10 |
| DOI | |
| 出版物ステータス | Published - 2011 10 |
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ASJC Scopus subject areas
- Industrial and Manufacturing Engineering
- Mechanical Engineering
- Metals and Alloys
- Materials Chemistry
これを引用
Basic study of high-Copper containing steel scrap recycle using P/M process. / Iwaoka, Taku; Fujiki, Akira.
：: Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy, 巻 58, 番号 10, 10.2011, p. 633-639.研究成果: Article
}
TY - JOUR
T1 - Basic study of high-Copper containing steel scrap recycle using P/M process
AU - Iwaoka, Taku
AU - Fujiki, Akira
PY - 2011/10
Y1 - 2011/10
N2 - The disused car scrap with the copper wire etc. is crushed together, and dissolved in an electric furnace. The removal of copper from the steel scrap that is thus inevitably contained high copper is difficult. Because the copper causes surface hot-shortness during hot rolling of steel, it is usually considered as a harmful tramp element. In powder metallurgy, the processing of recycling copper rich scrap was studied. Although the obtained materials showed high strength, this processing is not cost-effective for high-volume production. Therefore, we focused on the conventional compacting-sintering in order to recycle high-copper steel scrap efficiently. The mixture of gas-atomized Fe-4mass%Cu powder, pure iron powder and graphite was compacted with the die wall lubricating method. The obtained green compacts were sintered at 1423 K for 1.8 ks in an argon atmosphere. The transverse rupture strength and sintered density were 50OMPa and 7.0 Mg/m 3 respectively though the pearlite was hardly observed compared with standard Fe-Cu-C type sintered materials. Thus there is still room for improvement in strength property of the alloyed powder mixture obtained from the conventional process. In conclusion, the possibility of high-copper scrap recycling using conventional powder metallurgy was found.
AB - The disused car scrap with the copper wire etc. is crushed together, and dissolved in an electric furnace. The removal of copper from the steel scrap that is thus inevitably contained high copper is difficult. Because the copper causes surface hot-shortness during hot rolling of steel, it is usually considered as a harmful tramp element. In powder metallurgy, the processing of recycling copper rich scrap was studied. Although the obtained materials showed high strength, this processing is not cost-effective for high-volume production. Therefore, we focused on the conventional compacting-sintering in order to recycle high-copper steel scrap efficiently. The mixture of gas-atomized Fe-4mass%Cu powder, pure iron powder and graphite was compacted with the die wall lubricating method. The obtained green compacts were sintered at 1423 K for 1.8 ks in an argon atmosphere. The transverse rupture strength and sintered density were 50OMPa and 7.0 Mg/m 3 respectively though the pearlite was hardly observed compared with standard Fe-Cu-C type sintered materials. Thus there is still room for improvement in strength property of the alloyed powder mixture obtained from the conventional process. In conclusion, the possibility of high-copper scrap recycling using conventional powder metallurgy was found.
KW - Fe-cu alloyed powder
KW - High-copper steel scrap
KW - Recycle
UR - http://www.scopus.com/inward/record.url?scp=84855296610&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84855296610&partnerID=8YFLogxK
U2 - 10.2497/jjspm.58.633
DO - 10.2497/jjspm.58.633
M3 - Article
AN - SCOPUS:84855296610
VL - 58
SP - 633
EP - 639
JO - Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
JF - Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
SN - 0532-8799
IS - 10
ER -