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ISIJI45_11_1567
pdf
1.11 MB
151
論文情報
タイトル
Use of Slag Containing Water as Lubricant in High Straining Rolling for Ultrafine-grained Steels
著者
Nakamoto, Masashi
Nakamoto, Masashi
Lee, Joonho
Lee, Joonho
Tanaka, Toshihiro
Tanaka, Toshihiro
Ikeda, Jiro
Ikeda, Jiro
Inagaki, Satoshi
Inagaki, Satoshi
キーワード等
lubricant
waste slag
high straining rolling
ultrafine-grained steel
slag containing water
glass transition temperature
hydrothermal condition
porous structure
water release
内容
The Iron and Steel Institute of Japan
抄録
We investigated the possibility of using waste slag as a lubricant in high straining rolling for ultrafine-grained steels. When slag is applied as a lubricant, it might satisfy the requirement for stable biting workpieces because slag is as stable as glass with high hardness at the biting temperatures in rolling (100-200°C). On the other hand, ordinary slag doesn't have the fluidity necessary to provide a lubricating effect at rolling temperatures of 300-400°C since its melting temperature is usually high. However, slag containing water has been targeted as a new lubricant, and we focused on lowering the glass transition temperature and the structural change of slag containing water with the aim of improving the lubricity of slag in rolling. The microstructures of slag containing water and slag that released water were observed in the present study, along with in-situ observation of water released from the surface of slag containing water were conducted after heating in a SiO_2-Na_2O-B_2O_3 slag system. We found that water was mainly contained in the phase formed by ions dissolved from the original slag under hydrothermal conditions, and the amount of water was dependent on the state of the phase, such as glass or crystal. It was confirmed that slag containing water could provide a lubricating effect when the water is released from the slag above the glass transition temperature because a porous structure is formed due to the water release.
公開者
日本鉄鋼協会
公開者の別表記
The Iron and Steel Institute of Japan
公開者 (ヨミ)
ニホン テッコウ キョウカイ
掲載誌名
ISIJ International
巻
45
号
11
開始ページ
1567
終了ページ
1571
刊行年月
2005
ISSN
09151559
NCID
AA10680712
DOI (出版社版)
info:doi/10.2355/isijinternational.45.1567
URL
http://hdl.handle.net/11094/26407
権利情報
© 2005 ISIJ
言語
英語
カテゴリ
学術雑誌論文 Journal Article
論文詳細を表示
著者版フラグ
publisher
NII資源タイプ
学術雑誌論文
ローカル資源タイプ
学術雑誌論文
dcmi資源タイプ
text
DCTERMS.bibliographicCitation
ISIJ International.45(11) P.1567-P.1571
DC.title
Use of Slag Containing Water as Lubricant in High Straining Rolling for Ultrafine-grained Steels
DC.creator
Nakamoto, Masashi
Lee, Joonho
Tanaka, Toshihiro
Ikeda, Jiro
Inagaki, Satoshi
DC.publisher
日本鉄鋼協会
DC.language" scheme="DCTERMS.RFC1766
英語
DCTERMS.issued" scheme="DCTERMS.W3CDTF
2005
DC.identifier
info:doi/10.2355/isijinternational.45.1567
DC.identifier" scheme="DCTERMS.URI
http://hdl.handle.net/11094/26407
DC.subject
lubricant
waste slag
high straining rolling
ultrafine-grained steel
slag containing water
glass transition temperature
hydrothermal condition
porous structure
water release
DC.description
The Iron and Steel Institute of Japan
DCTERMS.abstract
We investigated the possibility of using waste slag as a lubricant in high straining rolling for ultrafine-grained steels. When slag is applied as a lubricant, it might satisfy the requirement for stable biting workpieces because slag is as stable as glass with high hardness at the biting temperatures in rolling (100-200°C). On the other hand, ordinary slag doesn't have the fluidity necessary to provide a lubricating effect at rolling temperatures of 300-400°C since its melting temperature is usually high. However, slag containing water has been targeted as a new lubricant, and we focused on lowering the glass transition temperature and the structural change of slag containing water with the aim of improving the lubricity of slag in rolling. The microstructures of slag containing water and slag that released water were observed in the present study, along with in-situ observation of water released from the surface of slag containing water were conducted after heating in a SiO_2-Na_2O-B_2O_3 slag system. We found that water was mainly contained in the phase formed by ions dissolved from the original slag under hydrothermal conditions, and the amount of water was dependent on the state of the phase, such as glass or crystal. It was confirmed that slag containing water could provide a lubricating effect when the water is released from the slag above the glass transition temperature because a porous structure is formed due to the water release.
DC.rights
© 2005 ISIJ
citation_title
Use of Slag Containing Water as Lubricant in High Straining Rolling for Ultrafine-grained Steels
citation_author
Nakamoto, Masashi
Lee, Joonho
Tanaka, Toshihiro
Ikeda, Jiro
Inagaki, Satoshi
citation_publisher
日本鉄鋼協会
citation_language
英語
citation_date
2005
citation_journal_title
ISIJ International
citation_volume
45
citation_issue
11
citation_firstpage
1567
citation_lastpage
1571
citation_issn
09151559
citation_doi
info:doi/10.2355/isijinternational.45.1567
citation_public_url
http://hdl.handle.net/11094/26407
citation_keywords
lubricant
waste slag
high straining rolling
ultrafine-grained steel
slag containing water
glass transition temperature
hydrothermal condition
porous structure
water release