JP2005272958A - 真空脱ガス装置の利用方法 - Google Patents
真空脱ガス装置の利用方法 Download PDFInfo
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- JP2005272958A JP2005272958A JP2004090026A JP2004090026A JP2005272958A JP 2005272958 A JP2005272958 A JP 2005272958A JP 2004090026 A JP2004090026 A JP 2004090026A JP 2004090026 A JP2004090026 A JP 2004090026A JP 2005272958 A JP2005272958 A JP 2005272958A
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- 238000009849 vacuum degassing Methods 0.000 title claims abstract description 95
- 238000000034 method Methods 0.000 title claims abstract description 41
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 96
- 239000010959 steel Substances 0.000 claims abstract description 96
- 229910001209 Low-carbon steel Inorganic materials 0.000 claims abstract description 71
- 229910052751 metal Inorganic materials 0.000 claims abstract description 57
- 239000002184 metal Substances 0.000 claims abstract description 57
- 238000007670 refining Methods 0.000 claims abstract description 43
- 238000002844 melting Methods 0.000 claims abstract description 35
- 230000008018 melting Effects 0.000 claims abstract description 35
- 238000007664 blowing Methods 0.000 claims abstract description 23
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229910001882 dioxygen Inorganic materials 0.000 claims abstract description 15
- 239000007789 gas Substances 0.000 claims abstract description 12
- 238000005261 decarburization Methods 0.000 claims description 35
- 229910052760 oxygen Inorganic materials 0.000 claims description 35
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 34
- 239000001301 oxygen Substances 0.000 claims description 34
- 229910000954 Medium-carbon steel Inorganic materials 0.000 claims description 22
- 229910052799 carbon Inorganic materials 0.000 claims description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- 238000007872 degassing Methods 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 239000000203 mixture Substances 0.000 abstract 1
- 238000002485 combustion reaction Methods 0.000 description 12
- 238000004090 dissolution Methods 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 7
- 238000011282 treatment Methods 0.000 description 7
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- 238000009628 steelmaking Methods 0.000 description 3
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 238000009749 continuous casting Methods 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 229910001327 Rimmed steel Inorganic materials 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000012552 review Methods 0.000 description 1
- 230000009291 secondary effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
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- 238000012546 transfer Methods 0.000 description 1
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Abstract
【解決手段】一次脱炭精錬炉から取鍋へ出鋼した溶鋼を収容し、溶製目標である中・低炭素鋼及び極低炭素鋼の両方を多数チャージ毎で交互に切り替えて再度精錬する真空脱ガス装置の使用方法を改良した。中・低炭素鋼の溶製に際し、一次脱炭精錬炉からリムド状態で溶鋼を取鍋に出鋼し、該溶鋼を真空脱ガス装置で真空脱炭すると共に、該真空脱ガス装置に挿入した酸素吹き用ランスを介して該真空槽内の溶鋼浴面上の空間部に酸素ガスを吹き込んで、浴内発生COガスを二次燃焼させて真空槽内の付着地金を溶解してから、溶鋼の脱酸、成分調整する溶製のチャージを少なくとも複数回行い、その後に極低炭素鋼の溶製を行う。
【選択図】 図1
Description
2 真空脱ガス槽
3 酸素吹き用ランス
4 取鍋
5 溶鋼
6 付着地金
7 排気ダクト
8 酸素ガス(気流)
Claims (4)
- 一次脱炭精錬炉から取鍋へ出鋼した溶鋼を収容し、溶製目標である中・低炭素鋼及び極低炭素鋼の両方を多数チャージ毎で交互に切り替えて再度精錬する真空脱ガス装置の使用方法であって、
まず、中・低炭素鋼の溶製に際し、一次脱炭精錬炉からリムド状態で溶鋼を取鍋に出鋼し、該溶鋼を前記真空脱ガス装置で真空脱炭すると共に、該真空脱ガス装置に挿入した酸素吹き用ランスを介して該真空槽内の溶鋼浴面上の空間部に酸素ガスを吹き込んで、浴内発生COガスを二次燃焼させて真空槽内の付着地金を溶解してから、溶鋼の脱酸、成分調整する溶製のチャージを少なくとも複数回行い、その後に極低炭素鋼の溶製を行うことを特徴とする真空脱ガス装置の利用方法。 - 前記中炭素鋼、低炭素鋼及び極低炭素鋼の炭素含有量を、それぞれ0.30〜0.10質量%、0.10未満〜0.010質量%及び0.010質量%未満とすることを特徴とする請求項1記載の真空脱ガス装置の利用方法。
- 前記真空脱ガス装置としてRH真空脱ガス装置を用いることを特徴とする請求項1又は2記載の真空脱ガス装置の利用方法。
- 前記酸素吹き用ランスの先端と前記真空槽内の溶鋼浴面との距離を5m以上とし、酸素吹き速度を0.08m3(標準状態)/(min・ton−steel)以上とすることを特徴とする請求項1〜3のいずれかに記載の真空脱ガス装置の利用方法。
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JP2005272958A true JP2005272958A (ja) | 2005-10-06 |
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Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009299087A (ja) * | 2008-06-10 | 2009-12-24 | Kobe Steel Ltd | 高合金極低炭素鋼の製造方法 |
CN103468866A (zh) * | 2013-09-26 | 2013-12-25 | 攀钢集团攀枝花钢钒有限公司 | 一种中高碳钢水的精炼工艺 |
KR101355680B1 (ko) | 2012-03-19 | 2014-01-27 | 제이에프이 스틸 가부시키가이샤 | 강의 제조 방법 |
KR101361867B1 (ko) | 2012-01-27 | 2014-02-12 | 제이에프이 스틸 가부시키가이샤 | 고청정도 강의 용제 방법 |
CN111549203A (zh) * | 2020-05-11 | 2020-08-18 | 首钢集团有限公司 | 一种减少钢液温降和真空室冷钢的rh精炼方法 |
CN113025784A (zh) * | 2021-02-07 | 2021-06-25 | 首钢集团有限公司 | 一种汽车用超低碳钢的冶炼方法 |
CN113073174A (zh) * | 2020-01-06 | 2021-07-06 | 兰州理工大学 | 一种降低超低碳钢冶炼过程中钢渣粘附的方法 |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103509912B (zh) * | 2012-06-29 | 2015-06-17 | 宝山钢铁股份有限公司 | 一种真空精炼废气二次燃烧升温控制方法 |
CN104593545B (zh) * | 2015-01-28 | 2016-12-07 | 中国重型机械研究院股份公司 | 一种用于rh炉外精炼设备的顶枪气动锁紧装置 |
-
2004
- 2004-03-25 JP JP2004090026A patent/JP4207820B2/ja not_active Expired - Lifetime
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009299087A (ja) * | 2008-06-10 | 2009-12-24 | Kobe Steel Ltd | 高合金極低炭素鋼の製造方法 |
KR101361867B1 (ko) | 2012-01-27 | 2014-02-12 | 제이에프이 스틸 가부시키가이샤 | 고청정도 강의 용제 방법 |
KR101355680B1 (ko) | 2012-03-19 | 2014-01-27 | 제이에프이 스틸 가부시키가이샤 | 강의 제조 방법 |
CN103468866A (zh) * | 2013-09-26 | 2013-12-25 | 攀钢集团攀枝花钢钒有限公司 | 一种中高碳钢水的精炼工艺 |
CN113073174A (zh) * | 2020-01-06 | 2021-07-06 | 兰州理工大学 | 一种降低超低碳钢冶炼过程中钢渣粘附的方法 |
CN113073174B (zh) * | 2020-01-06 | 2022-02-18 | 兰州理工大学 | 一种降低超低碳钢冶炼过程中钢渣粘附的方法 |
CN111549203A (zh) * | 2020-05-11 | 2020-08-18 | 首钢集团有限公司 | 一种减少钢液温降和真空室冷钢的rh精炼方法 |
CN111549203B (zh) * | 2020-05-11 | 2021-10-26 | 首钢集团有限公司 | 一种减少钢液温降和真空室冷钢的rh精炼方法 |
CN113025784A (zh) * | 2021-02-07 | 2021-06-25 | 首钢集团有限公司 | 一种汽车用超低碳钢的冶炼方法 |
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JP4207820B2 (ja) | 2009-01-14 |
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