JP5200501B2 - 溶鋼の脱酸方法 - Google Patents
溶鋼の脱酸方法 Download PDFInfo
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- JP5200501B2 JP5200501B2 JP2007299329A JP2007299329A JP5200501B2 JP 5200501 B2 JP5200501 B2 JP 5200501B2 JP 2007299329 A JP2007299329 A JP 2007299329A JP 2007299329 A JP2007299329 A JP 2007299329A JP 5200501 B2 JP5200501 B2 JP 5200501B2
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- Prior art keywords
- molten steel
- steel
- aluminum dross
- metal
- added
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 229910000831 Steel Inorganic materials 0.000 title claims description 111
- 239000010959 steel Substances 0.000 title claims description 111
- 238000000034 method Methods 0.000 title claims description 25
- 229910052782 aluminium Inorganic materials 0.000 claims description 58
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 47
- 229910052751 metal Inorganic materials 0.000 claims description 38
- 239000002184 metal Substances 0.000 claims description 38
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 32
- 239000001301 oxygen Substances 0.000 claims description 32
- 229910052760 oxygen Inorganic materials 0.000 claims description 32
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 37
- 229910052757 nitrogen Inorganic materials 0.000 description 19
- 229910052710 silicon Inorganic materials 0.000 description 19
- 229910000655 Killed steel Inorganic materials 0.000 description 17
- 238000007670 refining Methods 0.000 description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 10
- 229910052799 carbon Inorganic materials 0.000 description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 9
- 229910002796 Si–Al Inorganic materials 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 8
- 238000002844 melting Methods 0.000 description 8
- 230000003647 oxidation Effects 0.000 description 8
- 238000007254 oxidation reaction Methods 0.000 description 8
- 229910000616 Ferromanganese Inorganic materials 0.000 description 7
- 229910000720 Silicomanganese Inorganic materials 0.000 description 7
- 229910045601 alloy Inorganic materials 0.000 description 7
- 239000000956 alloy Substances 0.000 description 7
- DALUDRGQOYMVLD-UHFFFAOYSA-N iron manganese Chemical compound [Mn].[Fe] DALUDRGQOYMVLD-UHFFFAOYSA-N 0.000 description 7
- 230000008018 melting Effects 0.000 description 7
- 230000003749 cleanliness Effects 0.000 description 6
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 description 6
- 238000010521 absorption reaction Methods 0.000 description 5
- 239000002893 slag Substances 0.000 description 5
- 229910002551 Fe-Mn Inorganic materials 0.000 description 4
- 238000005261 decarburization Methods 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 3
- 229910000519 Ferrosilicon Inorganic materials 0.000 description 3
- 238000009749 continuous casting Methods 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 2
- YTNIXZGTHTVJBW-SCRDCRAPSA-N FMNH2 Chemical compound OP(=O)(O)OC[C@@H](O)[C@@H](O)[C@@H](O)CN1C=2C=C(C)C(C)=CC=2NC2=C1NC(=O)NC2=O YTNIXZGTHTVJBW-SCRDCRAPSA-N 0.000 description 2
- 229910017082 Fe-Si Inorganic materials 0.000 description 2
- 229910017133 Fe—Si Inorganic materials 0.000 description 2
- 229910001327 Rimmed steel Inorganic materials 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 229910001882 dioxygen Inorganic materials 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000002436 steel type Substances 0.000 description 2
- 229910000532 Deoxidized steel Inorganic materials 0.000 description 1
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- 229910000914 Mn alloy Inorganic materials 0.000 description 1
- 229910000676 Si alloy Inorganic materials 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 235000013361 beverage Nutrition 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000010960 cold rolled steel Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000009849 vacuum degassing Methods 0.000 description 1
Landscapes
- Treatment Of Steel In Its Molten State (AREA)
Description
Claims (2)
- 転炉から取鍋に出鋼した溶鋼に、最初に、アルミドロスを、アルミドロスによる脱酸後にも溶存酸素が残留するように添加量を調整して添加し、次に、Mn、またはMn及びSiの同時添加、若しくはMnからSiの順に添加し、最後に金属Alを添加して溶鋼を脱酸することを特徴とする、溶鋼の脱酸方法。
- 前記アルミドロスは金属Alを40〜60質量%含有し、該アルミドロスを溶鋼1トンあたり0.2kg以上0.6kg以下の範囲で添加することを特徴とする、請求項1に記載の溶鋼の脱酸方法。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007299329A JP5200501B2 (ja) | 2007-11-19 | 2007-11-19 | 溶鋼の脱酸方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007299329A JP5200501B2 (ja) | 2007-11-19 | 2007-11-19 | 溶鋼の脱酸方法 |
Publications (2)
Publication Number | Publication Date |
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JP2009120930A JP2009120930A (ja) | 2009-06-04 |
JP5200501B2 true JP5200501B2 (ja) | 2013-06-05 |
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JP2007299329A Active JP5200501B2 (ja) | 2007-11-19 | 2007-11-19 | 溶鋼の脱酸方法 |
Country Status (1)
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JP (1) | JP5200501B2 (ja) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114480946B (zh) * | 2020-11-12 | 2023-06-09 | 上海梅山钢铁股份有限公司 | 一种低铝包晶钢钢水的生产方法 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4170468A (en) * | 1977-12-22 | 1979-10-09 | United States Steel Corporation | Deoxidation of steel |
JP2695097B2 (ja) * | 1992-06-25 | 1997-12-24 | 川崎製鉄株式会社 | 溶鋼の脱酸方法 |
JPH0734117A (ja) * | 1993-07-14 | 1995-02-03 | Kawasaki Steel Corp | 清浄度に優れた極低炭素鋼の製造方法 |
JP3502805B2 (ja) * | 2000-03-31 | 2004-03-02 | 新日本製鐵株式会社 | 溶接継手部靭性の優れた鋼材の製造方法 |
JP3994641B2 (ja) * | 2000-07-27 | 2007-10-24 | 住友金属工業株式会社 | 高清浄極低炭素鋼の製造方法 |
JP2003147430A (ja) * | 2001-11-12 | 2003-05-21 | Nkk Corp | 製鋼用還元剤及び製鋼方法 |
JP4042587B2 (ja) * | 2002-05-22 | 2008-02-06 | Jfeスチール株式会社 | 溶鋼の取鍋精錬方法 |
JP2007162085A (ja) * | 2005-12-15 | 2007-06-28 | Sumitomo Metal Ind Ltd | 微細酸化物分散鋼の製造方法 |
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2007
- 2007-11-19 JP JP2007299329A patent/JP5200501B2/ja active Active
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