JP6787497B2 - 鋼の連続鋳造方法 - Google Patents
鋼の連続鋳造方法 Download PDFInfo
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- JP6787497B2 JP6787497B2 JP2019543400A JP2019543400A JP6787497B2 JP 6787497 B2 JP6787497 B2 JP 6787497B2 JP 2019543400 A JP2019543400 A JP 2019543400A JP 2019543400 A JP2019543400 A JP 2019543400A JP 6787497 B2 JP6787497 B2 JP 6787497B2
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- 238000005266 casting Methods 0.000 title claims description 61
- 229910000831 Steel Inorganic materials 0.000 title claims description 53
- 239000010959 steel Substances 0.000 title claims description 53
- 238000000034 method Methods 0.000 title claims description 23
- 230000009467 reduction Effects 0.000 claims description 130
- 238000009749 continuous casting Methods 0.000 claims description 51
- 238000005452 bending Methods 0.000 claims description 23
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 229910001032 Killed carbon steel Inorganic materials 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims description 2
- 238000005204 segregation Methods 0.000 description 88
- 238000007711 solidification Methods 0.000 description 74
- 230000008023 solidification Effects 0.000 description 74
- 239000007790 solid phase Substances 0.000 description 44
- 238000012360 testing method Methods 0.000 description 28
- 239000011572 manganese Substances 0.000 description 26
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 16
- 229910052739 hydrogen Inorganic materials 0.000 description 16
- 239000001257 hydrogen Substances 0.000 description 16
- 238000012937 correction Methods 0.000 description 11
- 238000011144 upstream manufacturing Methods 0.000 description 11
- 238000005336 cracking Methods 0.000 description 8
- 238000004364 calculation method Methods 0.000 description 7
- 238000012546 transfer Methods 0.000 description 7
- 238000001816 cooling Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 238000005520 cutting process Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 239000007921 spray Substances 0.000 description 5
- 229910052717 sulfur Inorganic materials 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 4
- 229910052748 manganese Inorganic materials 0.000 description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 230000005502 phase rule Effects 0.000 description 4
- 229910052698 phosphorus Inorganic materials 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 229910052804 chromium Inorganic materials 0.000 description 3
- 239000011651 chromium Substances 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 3
- 239000000498 cooling water Substances 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 210000001787 dendrite Anatomy 0.000 description 3
- UNASZPQZIFZUSI-UHFFFAOYSA-N methylidyneniobium Chemical compound [Nb]#C UNASZPQZIFZUSI-UHFFFAOYSA-N 0.000 description 3
- 229910052759 nickel Inorganic materials 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 238000007598 dipping method Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000007791 liquid phase Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- OXNIZHLAWKMVMX-UHFFFAOYSA-N picric acid Chemical compound OC1=C([N+]([O-])=O)C=C([N+]([O-])=O)C=C1[N+]([O-])=O OXNIZHLAWKMVMX-UHFFFAOYSA-N 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- CADICXFYUNYKGD-UHFFFAOYSA-N sulfanylidenemanganese Chemical compound [Mn]=S CADICXFYUNYKGD-UHFFFAOYSA-N 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000009795 derivation Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/12—Accessories for subsequent treating or working cast stock in situ
- B22D11/1206—Accessories for subsequent treating or working cast stock in situ for plastic shaping of strands
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/16—Controlling or regulating processes or operations
- B22D11/20—Controlling or regulating processes or operations for removing cast stock
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/02—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling heavy work, e.g. ingots, slabs, blooms, or billets, in which the cross-sectional form is unimportant ; Rolling combined with forging or pressing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
- B22D11/0622—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars formed by two casting wheels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/12—Accessories for subsequent treating or working cast stock in situ
- B22D11/128—Accessories for subsequent treating or working cast stock in situ for removing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/12—Accessories for subsequent treating or working cast stock in situ
- B22D11/128—Accessories for subsequent treating or working cast stock in situ for removing
- B22D11/1282—Vertical casting and curving the cast stock to the horizontal
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/16—Controlling or regulating processes or operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/16—Controlling or regulating processes or operations
- B22D11/20—Controlling or regulating processes or operations for removing cast stock
- B22D11/207—Controlling or regulating processes or operations for removing cast stock responsive to thickness of solidified shell
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/02—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling heavy work, e.g. ingots, slabs, blooms, or billets, in which the cross-sectional form is unimportant ; Rolling combined with forging or pressing
- B21B2001/028—Slabs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2201/00—Special rolling modes
- B21B2201/14—Soft reduction
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
Description
[1]湾曲型連続鋳造機または垂直曲げ型連続鋳造機に配置された複数対の鋳片支持ロールのロール開度を鋳造方向下流側に向かって段階的に増加させて、内部に未凝固層を有する鋳片の長辺面を3〜10mmの意図的バルジング総量でバルジングさせ、
その後、複数対の鋳片支持ロールのロール開度を鋳造方向下流側に向かって段階的に減少させた軽圧下帯で鋳片の長辺面を圧下する、鋼の連続鋳造方法であって、
前記軽圧下帯では、0.3〜2.0mm/minの圧下速度で、且つ、前記意図的バルジング総量と同等またはそれ以下の圧下総量で鋳片の長辺面を圧下し、
前記鋳片の鋳造方向形状を円弧状から直線状に矯正する矯正帯における鋳片の厚み中心の固相率が0.2未満または流動限界固相率以上1.0以下である、鋼の連続鋳造方法。
[2]前記軽圧下帯の圧下開始点が、前記矯正帯を鋳造方向下流側に外れた位置である、上記[1]に記載の鋼の連続鋳造方法。
但し、(1)式において、TLは液相線温度(℃)、[%C]は溶鋼の炭素濃度(質量%)、[%Si]は溶鋼の珪素濃度(質量%)、[%Mn]は溶鋼のマンガン濃度(質量%)、[%P]は溶鋼の燐濃度(質量%)、[%S]は溶鋼の硫黄濃度(質量%)、[%Cu]は溶鋼の銅濃度(質量%)、[%Ni]は溶鋼のニッケル濃度(質量%)、[%Cr]は溶鋼のクロム濃度(質量%)、[%Al]は溶鋼のアルミニウム濃度(質量%)である。
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 鋳片支持ロール
7 搬送ロール
8 鋳片切断機
9 溶鋼
10 鋳片
11 凝固シェル
12 未凝固層
13 凝固完了位置
14 軽圧下帯
15 意図的バルジング帯
16a 曲げ帯
16b 矯正帯
Claims (1)
- 湾曲型連続鋳造機または垂直曲げ型連続鋳造機に配置された複数対の鋳片支持ロールのロール開度を鋳造方向下流側に向かって段階的に増加させて、内部に未凝固層を有する鋳片の長辺面を3〜10mmの意図的バルジング総量でバルジングさせ、
その後、複数対の鋳片支持ロールのロール開度を鋳造方向下流側に向かって段階的に減少させた軽圧下帯で鋳片の長辺面を圧下し、
化学成分が、C:0.03〜0.2質量%、Si:0.05〜0.5質量%、Mn:0.8〜1.8質量%、P:0.02質量%未満、S:0.005質量%未満のアルミキルド炭素鋼を連続鋳造する、鋼の連続鋳造方法であって、
前記軽圧下帯では、0.3〜2.0mm/minの圧下速度で、且つ、前記意図的バルジング総量と同等またはそれ以下の圧下総量で鋳片の長辺面を圧下し、
前記鋳片の鋳造方向形状を円弧状から直線状に矯正する矯正帯における鋳片の厚み中心の固相率が0.2未満であり、
前記軽圧下帯の圧下開始点が、前記矯正帯を鋳造方向下流側に外れた位置である、鋼の連続鋳造方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2018078979 | 2018-04-17 | ||
JP2018078979 | 2018-04-17 | ||
PCT/JP2019/015895 WO2019203137A1 (ja) | 2018-04-17 | 2019-04-12 | 鋼の連続鋳造方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPWO2019203137A1 JPWO2019203137A1 (ja) | 2020-04-30 |
JP6787497B2 true JP6787497B2 (ja) | 2020-11-18 |
Family
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JP2019543400A Active JP6787497B2 (ja) | 2018-04-17 | 2019-04-12 | 鋼の連続鋳造方法 |
Country Status (7)
Country | Link |
---|---|
US (1) | US11471936B2 (ja) |
EP (1) | EP3782747B1 (ja) |
JP (1) | JP6787497B2 (ja) |
KR (1) | KR102387625B1 (ja) |
CN (1) | CN111989175B (ja) |
TW (1) | TWI727305B (ja) |
WO (1) | WO2019203137A1 (ja) |
Families Citing this family (1)
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CN114472821B (zh) * | 2020-11-13 | 2024-06-04 | 上海梅山钢铁股份有限公司 | 一种板坯连铸流线辊缝开口度的标定方法 |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
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JP3064832B2 (ja) | 1994-11-10 | 2000-07-12 | 住友金属工業株式会社 | 連続鋳造方法 |
JPH08192256A (ja) | 1995-01-12 | 1996-07-30 | Nippon Steel Corp | 連続鋳造方法 |
JP3298525B2 (ja) * | 1998-11-10 | 2002-07-02 | 住友金属工業株式会社 | ロール装置の交換が可能な連続鋳造設備 |
JP4453557B2 (ja) | 2005-01-19 | 2010-04-21 | Jfeスチール株式会社 | 連続鋳造鋳片の製造方法 |
JP5380968B2 (ja) * | 2008-09-18 | 2014-01-08 | Jfeスチール株式会社 | 連続鋳造鋳片の製造方法 |
JP5413289B2 (ja) * | 2010-04-16 | 2014-02-12 | Jfeスチール株式会社 | 連続鋳造鋳片の中心偏析判定方法 |
JP5494350B2 (ja) | 2010-08-24 | 2014-05-14 | Jfeスチール株式会社 | 鋼鋳片の連続鋳造方法 |
KR101232831B1 (ko) | 2010-10-29 | 2013-02-13 | 한국기계연구원 | 입체 냉각 구조를 갖는 냉각 실린더 및 이를 구비하는 요거트 아이스크림 제조 장치 |
JP5962625B2 (ja) * | 2013-09-25 | 2016-08-03 | Jfeスチール株式会社 | 鋼の連続鋳造方法 |
EP3219408B1 (en) | 2014-12-24 | 2018-11-07 | JFE Steel Corporation | Continuous casting method for steel |
BR102015009492B1 (pt) * | 2015-01-30 | 2021-05-04 | Jfe Steel Corporation | método de lingotamento contínuo de aço |
JP6365604B2 (ja) | 2015-07-22 | 2018-08-01 | Jfeスチール株式会社 | 鋼の連続鋳造方法 |
JP6384679B2 (ja) * | 2016-01-27 | 2018-09-05 | Jfeスチール株式会社 | 熱延鋼板の製造方法 |
WO2018056322A1 (ja) | 2016-09-21 | 2018-03-29 | Jfeスチール株式会社 | 鋼の連続鋳造方法 |
-
2019
- 2019-04-12 EP EP19788327.5A patent/EP3782747B1/en active Active
- 2019-04-12 WO PCT/JP2019/015895 patent/WO2019203137A1/ja unknown
- 2019-04-12 US US17/045,862 patent/US11471936B2/en active Active
- 2019-04-12 KR KR1020207028818A patent/KR102387625B1/ko active IP Right Grant
- 2019-04-12 CN CN201980025890.2A patent/CN111989175B/zh active Active
- 2019-04-12 JP JP2019543400A patent/JP6787497B2/ja active Active
- 2019-04-16 TW TW108113190A patent/TWI727305B/zh active
Also Published As
Publication number | Publication date |
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EP3782747B1 (en) | 2022-07-20 |
KR102387625B1 (ko) | 2022-04-18 |
US11471936B2 (en) | 2022-10-18 |
JPWO2019203137A1 (ja) | 2020-04-30 |
TWI727305B (zh) | 2021-05-11 |
TW201945097A (zh) | 2019-12-01 |
KR20200124752A (ko) | 2020-11-03 |
BR112020020533A2 (pt) | 2021-01-12 |
US20210138535A1 (en) | 2021-05-13 |
WO2019203137A1 (ja) | 2019-10-24 |
CN111989175B (zh) | 2022-03-22 |
CN111989175A (zh) | 2020-11-24 |
EP3782747A4 (en) | 2021-02-24 |
EP3782747A1 (en) | 2021-02-24 |
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