JP5529341B2 - 超低炭素,極低Tiのアルミニウムシリコンキルド鋼の制御方法 - Google Patents
超低炭素,極低Tiのアルミニウムシリコンキルド鋼の制御方法 Download PDFInfo
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- 238000000034 method Methods 0.000 title claims description 32
- 229910052799 carbon Inorganic materials 0.000 title claims description 18
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims description 16
- 229910000655 Killed steel Inorganic materials 0.000 title description 2
- CSDREXVUYHZDNP-UHFFFAOYSA-N alumanylidynesilicon Chemical compound [Al].[Si] CSDREXVUYHZDNP-UHFFFAOYSA-N 0.000 title 1
- 229910000831 Steel Inorganic materials 0.000 claims description 90
- 239000010959 steel Substances 0.000 claims description 90
- 238000006477 desulfuration reaction Methods 0.000 claims description 44
- 230000023556 desulfurization Effects 0.000 claims description 44
- 239000002893 slag Substances 0.000 claims description 43
- 229910052782 aluminium Inorganic materials 0.000 claims description 25
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 23
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 22
- 238000007670 refining Methods 0.000 claims description 19
- 229910052717 sulfur Inorganic materials 0.000 claims description 19
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 16
- 239000011593 sulfur Substances 0.000 claims description 16
- 238000003723 Smelting Methods 0.000 claims description 15
- 239000003795 chemical substances by application Substances 0.000 claims description 14
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims description 12
- 238000005261 decarburization Methods 0.000 claims description 10
- 229910052742 iron Inorganic materials 0.000 claims description 10
- 230000003009 desulfurizing effect Effects 0.000 claims description 8
- 239000011572 manganese Substances 0.000 claims description 7
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 6
- 239000011575 calcium Substances 0.000 claims description 6
- 229910052791 calcium Inorganic materials 0.000 claims description 6
- 239000003607 modifier Substances 0.000 claims description 6
- 239000000126 substance Substances 0.000 claims description 6
- 229910052719 titanium Inorganic materials 0.000 claims description 5
- CYUOWZRAOZFACA-UHFFFAOYSA-N aluminum iron Chemical compound [Al].[Fe] CYUOWZRAOZFACA-UHFFFAOYSA-N 0.000 claims description 4
- 239000012535 impurity Substances 0.000 claims description 4
- DALUDRGQOYMVLD-UHFFFAOYSA-N iron manganese Chemical compound [Mn].[Fe] DALUDRGQOYMVLD-UHFFFAOYSA-N 0.000 claims description 4
- XWHPIFXRKKHEKR-UHFFFAOYSA-N iron silicon Chemical compound [Si].[Fe] XWHPIFXRKKHEKR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052698 phosphorus Inorganic materials 0.000 claims description 4
- 229910052710 silicon Inorganic materials 0.000 claims description 4
- 229910004261 CaF 2 Inorganic materials 0.000 claims description 3
- 229910052748 manganese Inorganic materials 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 241000238631 Hexapoda Species 0.000 claims 4
- 239000010936 titanium Substances 0.000 description 51
- 230000000694 effects Effects 0.000 description 24
- 230000008569 process Effects 0.000 description 15
- 238000009826 distribution Methods 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 9
- 238000002407 reforming Methods 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 6
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 3
- 235000011941 Tilia x europaea Nutrition 0.000 description 3
- 238000005275 alloying Methods 0.000 description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 238000009749 continuous casting Methods 0.000 description 3
- 229910052593 corundum Inorganic materials 0.000 description 3
- 239000010436 fluorite Substances 0.000 description 3
- 239000004571 lime Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000009628 steelmaking Methods 0.000 description 3
- 229910001845 yogo sapphire Inorganic materials 0.000 description 3
- 229910015189 FeOx Inorganic materials 0.000 description 2
- 229910000616 Ferromanganese Inorganic materials 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 229910000639 Spring steel Inorganic materials 0.000 description 1
- 229910003087 TiOx Inorganic materials 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- ULGYAEQHFNJYML-UHFFFAOYSA-N [AlH3].[Ca] Chemical compound [AlH3].[Ca] ULGYAEQHFNJYML-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910001634 calcium fluoride Inorganic materials 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- HLLICFJUWSZHRJ-UHFFFAOYSA-N tioxidazole Chemical compound CCCOC1=CC=C2N=C(NC(=O)OC)SC2=C1 HLLICFJUWSZHRJ-UHFFFAOYSA-N 0.000 description 1
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- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
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- C—CHEMISTRY; METALLURGY
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- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
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- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
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- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
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Description
取鍋にある硫黄の初期含有量が0.0021〜0.0025%のとき、3.3〜4.0kg/t鋼;
取鍋にある硫黄の初期含有量が0.0026〜0.0030%のとき、4.0〜6.0kg/t鋼;
取鍋にある硫黄の初期含有量が0.0031〜0.0045%のとき、6.7〜9.0kg/t鋼;
取鍋にある硫黄の初期含有量が0.0036〜0.0040%のとき、9.7〜12.3kg/t鋼
である。
1. 転炉からの鋼の湯出し過程で、改質処理を行い、最大限に取鍋スラグ中のTi含有量を増加することで、続くRH製錬プロセスで脱硫処理をするとき、スラグの中のTiは容易に脱酸されないので、最後にTiの含有量が低いビレットが取得できる。この操作のキーポイントは取鍋の改質時のカルシウム・アルミニウム系改質剤の添加量である。
Claims (3)
- 化学成分の重量比が、C≦0.005%、Si:0.1〜3.4%、Mn:0.1〜0.5%、P≦0.2%、S≦0.002%、Al:0〜1.2%、N≦0.005%,Ti≦0.0015%、残部がFeと不可避的不純物である、超低炭素のアルミニウムシリコンキルド鋼中のTiを極めて低く制御する方法において、上記化学成分を有する溶鋼が、溶鉄予備処理し、製錬し、RH精錬することにより得られた後、鋳込み、成形処理される、方法であって、
RH精錬で脱炭が終わるとき、取鍋スラグの成分であるT.(トータル)Feの含有量が≧5%およびAl2O3の含有量が≦23%になるように、取鍋スラグに0.6〜1.7kg/t鋼(鋼1t当たり)のカルシウム・アルミニウム系改質剤を加える改質処理を行い、RH精錬で脱炭が終わるとき、シリコン鉄、アルミニウム鉄またはマンガン鉄により脱酸し、合金化し、脱硫率が50%〜75%になるように深度脱硫を行なう、超低炭素のアルミニウムシリコンキルド鋼中のTiを極めて低く制御する方法。 - 請求項1に記載の超低炭素のアルミニウムシリコンキルド鋼中のTiを極めて低く制御する方法において、
上記深度脱硫に用いる脱硫剤の重量比は、CaO:65%〜75%;Al2O3:15%〜30%;CaF2:0〜10%である超低炭素のアルミニウムシリコンキルド鋼中のTiを極めて低く制御する方法。 - 請求項1または2に記載の超低炭素のアルミニウムシリコンキルド鋼中のTiを極めて低く制御する方法において、上記深度脱硫に用いる脱硫剤の添加量は、
取鍋にある硫黄の初期含有量が0.0021〜0.0025%であるとき、3.3〜4.0kg/t鋼;
取鍋にある硫黄の初期含有量が0.0026〜0.0030%であるとき、4.0〜6.0kg/t鋼;
取鍋にある硫黄の初期含有量が0.0031〜0.0045%であるとき、6.7〜9.0kg/t鋼;
取鍋にある硫黄の初期含有量が0.0036〜0.0040%であるとき、9.7〜12.3kg/t鋼
である超低炭素のアルミニウムシリコンキルド鋼中のTiを極めて低く制御する方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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CN201010208286.4 | 2010-06-23 | ||
CN2010102082864A CN102296157B (zh) | 2010-06-23 | 2010-06-23 | 超低碳铝硅镇静钢的极低Ti控制方法 |
PCT/CN2011/072654 WO2011160483A1 (zh) | 2010-06-23 | 2011-04-12 | 控制超低碳镇静钢中ti含量的方法 |
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JP2013527318A JP2013527318A (ja) | 2013-06-27 |
JP5529341B2 true JP5529341B2 (ja) | 2014-06-25 |
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US (1) | US8882880B2 (ja) |
EP (1) | EP2586878B1 (ja) |
JP (1) | JP5529341B2 (ja) |
KR (1) | KR101484106B1 (ja) |
CN (1) | CN102296157B (ja) |
MX (1) | MX2012013486A (ja) |
RU (1) | RU2527569C2 (ja) |
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Cited By (1)
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CN110331258A (zh) * | 2019-08-07 | 2019-10-15 | 无锡东大汉森冶金实业有限公司 | 超低碳硅镇静钢在RH真空处理时控制Cr含量的生产工艺 |
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CN110331258A (zh) * | 2019-08-07 | 2019-10-15 | 无锡东大汉森冶金实业有限公司 | 超低碳硅镇静钢在RH真空处理时控制Cr含量的生产工艺 |
CN110331258B (zh) * | 2019-08-07 | 2021-04-06 | 苏州东大汉森冶金实业有限公司 | 超低碳硅镇静钢在RH真空处理时控制Cr含量的生产工艺 |
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