JP4998734B2 - 連続鋳造鋳片の製造方法 - Google Patents
連続鋳造鋳片の製造方法 Download PDFInfo
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- JP4998734B2 JP4998734B2 JP2007294145A JP2007294145A JP4998734B2 JP 4998734 B2 JP4998734 B2 JP 4998734B2 JP 2007294145 A JP2007294145 A JP 2007294145A JP 2007294145 A JP2007294145 A JP 2007294145A JP 4998734 B2 JP4998734 B2 JP 4998734B2
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- Prior art keywords
- slab
- surface temperature
- reduction
- center
- long side
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- 238000004519 manufacturing process Methods 0.000 title description 7
- 238000009749 continuous casting Methods 0.000 claims description 18
- 239000007790 solid phase Substances 0.000 claims description 12
- 238000005204 segregation Methods 0.000 description 33
- 238000005096 rolling process Methods 0.000 description 23
- 229910000831 Steel Inorganic materials 0.000 description 20
- 239000010959 steel Substances 0.000 description 20
- 238000005266 casting Methods 0.000 description 17
- 238000007711 solidification Methods 0.000 description 16
- 230000008023 solidification Effects 0.000 description 16
- 238000001816 cooling Methods 0.000 description 11
- 239000000498 cooling water Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 7
- 229910052799 carbon Inorganic materials 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 238000005452 bending Methods 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 4
- 230000007423 decrease Effects 0.000 description 4
- 239000012071 phase Substances 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- 238000012937 correction Methods 0.000 description 3
- 238000007654 immersion Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000011835 investigation Methods 0.000 description 2
- 239000007791 liquid phase Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 239000011800 void material Substances 0.000 description 2
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 235000013361 beverage Nutrition 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010835 comparative analysis Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 210000001787 dendrite Anatomy 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
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- Continuous Casting (AREA)
Description
2 タンディッシュ
3 スライディングノズル
4 浸漬ノズル
5 鋳型
6 サポートロール
7 ガイドロール
8 ピンチロール
9 搬送ロール
10 鋳片切断機
11 溶鋼
12 鋳片
13 凝固シェル
14 未凝固相
15 凝固完了位置
16 軽圧下帯
Claims (1)
- 連続鋳造機内でガイドロール群の鋳片厚み方向の間隔を広げて鋳片をバルジングさせた後に、鋳片の厚み中心部の固相率が0.4以下の時点から鋳片の圧下を開始し、少なくとも鋳片の厚み中心部の固相率が0.7以上になる時点まで鋳片の圧下を継続して連続鋳造鋳片を製造するに際し、鋳片の厚みをD(mm)としたときに、鋳片長辺面のコーナーから「100+D/2」mm離れた位置までの範囲を除く鋳片長辺面の表面温度を850℃以上に制御してバルジングさせ、次いで、鋳片長辺面の表面温度を750℃以上900℃以下、且つ、鋳片短辺面中央部の表面温度を1000℃以上に制御して鋳片を圧下することを特徴とする、連続鋳造鋳片の製造方法。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007294145A JP4998734B2 (ja) | 2007-11-13 | 2007-11-13 | 連続鋳造鋳片の製造方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007294145A JP4998734B2 (ja) | 2007-11-13 | 2007-11-13 | 連続鋳造鋳片の製造方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2009119486A JP2009119486A (ja) | 2009-06-04 |
JP4998734B2 true JP4998734B2 (ja) | 2012-08-15 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2007294145A Active JP4998734B2 (ja) | 2007-11-13 | 2007-11-13 | 連続鋳造鋳片の製造方法 |
Country Status (1)
Country | Link |
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JP (1) | JP4998734B2 (ja) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8322402B2 (en) | 2009-09-23 | 2012-12-04 | Nucor Corporation | Method and apparatus for controlling strip temperature rebound in cast strip |
CN101934357B (zh) * | 2010-08-23 | 2012-05-30 | 首钢总公司 | 一种有效控制连铸板坯中心偏析的工艺 |
JP5776285B2 (ja) * | 2011-04-12 | 2015-09-09 | Jfeスチール株式会社 | 連続鋳造鋳片の製造方法 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS606254A (ja) * | 1983-06-25 | 1985-01-12 | Nippon Kokan Kk <Nkk> | 連続鋳造方法 |
JPS62158555A (ja) * | 1985-12-30 | 1987-07-14 | Nippon Steel Corp | 連続鋳造方法 |
JPH10193063A (ja) * | 1997-01-08 | 1998-07-28 | Sumitomo Metal Ind Ltd | 連続鋳造方法 |
JP3114671B2 (ja) * | 1997-10-21 | 2000-12-04 | 住友金属工業株式会社 | 鋼の連続鋳造方法 |
JP3524750B2 (ja) * | 1998-02-27 | 2004-05-10 | 株式会社神戸製鋼所 | 鋼の連続鋳造方法 |
JP2001259809A (ja) * | 2000-03-23 | 2001-09-25 | Nkk Corp | 連続鋳造方法 |
JP4508087B2 (ja) * | 2005-11-17 | 2010-07-21 | 住友金属工業株式会社 | 連続鋳造方法および連続鋳造鋳片 |
-
2007
- 2007-11-13 JP JP2007294145A patent/JP4998734B2/ja active Active
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Publication number | Publication date |
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JP2009119486A (ja) | 2009-06-04 |
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