JP5567214B2 - レードル交換時の溶鋼汚染範囲予測方法 - Google Patents
レードル交換時の溶鋼汚染範囲予測方法 Download PDFInfo
- Publication number
- JP5567214B2 JP5567214B2 JP2013527012A JP2013527012A JP5567214B2 JP 5567214 B2 JP5567214 B2 JP 5567214B2 JP 2013527012 A JP2013527012 A JP 2013527012A JP 2013527012 A JP2013527012 A JP 2013527012A JP 5567214 B2 JP5567214 B2 JP 5567214B2
- Authority
- JP
- Japan
- Prior art keywords
- ladle
- molten steel
- contamination
- amount
- tundish
- 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.)
- Active
Links
- 229910000831 Steel Inorganic materials 0.000 title claims description 111
- 239000010959 steel Substances 0.000 title claims description 111
- 238000011109 contamination Methods 0.000 title claims description 98
- 238000000034 method Methods 0.000 title claims description 28
- 238000005266 casting Methods 0.000 claims description 56
- 238000012886 linear function Methods 0.000 claims description 15
- 230000014509 gene expression Effects 0.000 claims description 14
- 230000006870 function Effects 0.000 description 14
- 238000007654 immersion Methods 0.000 description 12
- 239000002184 metal Substances 0.000 description 10
- 229910052751 metal Inorganic materials 0.000 description 10
- 239000002893 slag Substances 0.000 description 10
- 238000009749 continuous casting Methods 0.000 description 9
- 239000000843 powder Substances 0.000 description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 238000001816 cooling Methods 0.000 description 8
- 230000007423 decrease Effects 0.000 description 7
- 230000007547 defect Effects 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 238000007711 solidification Methods 0.000 description 4
- 230000008023 solidification Effects 0.000 description 4
- 238000013459 approach Methods 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 235000019484 Rapeseed oil Nutrition 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000010583 slow cooling Methods 0.000 description 1
- 239000002436 steel type Substances 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
- G06F30/23—Design optimisation, verification or simulation using finite element methods [FEM] or finite difference methods [FDM]
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D1/00—Treatment of fused masses in the ladle or the supply runners before casting
-
- 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
- B22D11/18—Controlling or regulating processes or operations for pouring
- B22D11/181—Controlling or regulating processes or operations for pouring responsive to molten metal level or slag level
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C1/00—Refining of pig-iron; Cast iron
- C21C1/04—Removing impurities other than carbon, phosphorus or sulfur
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Computer Hardware Design (AREA)
- Evolutionary Computation (AREA)
- Geometry (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Continuous Casting (AREA)
Description
関係式1
Qplug=g×Qrm
Qpeak=h×Qrm
(Qpeak=h×Qrm)
Qpeak値はタンディッシュ20内の流動特性によって決定される値で、流入時点のタンディッシュの残余溶鋼量(Qrm)と比例関係を持ち、第2比例係数(h)は0.2から0.4までの値を持つことができる。
11 第1レードル
12 第2レードル
15 シュラウドノズル
20 タンディッシュ
25 浸漬ノズル
30 モールド
40 モールドオシレータ
50 パウダー供給器
51 パウダー層
52 液体流動層
53 潤滑層
60 支持ロール
65 スプレー
70 ピンチロール
80 連鋳片
81 凝固シェル
82 未凝固溶鋼
83 先端部
85 凝固完了点
Claims (6)
- 第1レードルの終了後の鋳造量(Q)と第2レードルの開始時のタンディッシュの残余溶鋼量(Qrm)をそれぞれ指定する第1段階;
前記残余溶鋼量(Qrm)と設定の1次比例係数または2次比例係数を用い、第1レードルの終了時点後に汚染濃度が設定の第1基準値となるときの鋳造量(Qplug)と設定の第2基準値となるときの鋳造量(Qpeak)をそれぞれ計算する第2段階;
前記で得られた鋳造量(Q、Qplug、Qpeak)及び残余溶鋼量(Qrm)を、設定の直線関数と指数関数にそれぞれ代入して特定の鋳造量に対する汚染濃度を求める第3段階;及び
前記直線関数と指数関数によって得られた汚染濃度を互いに比較し、両者の中でより小さな値を特定の鋳造量による汚染濃度に決定する第4段階;を含み、
第2基準値は最大であるときの汚染濃度であり、第1基準値は、最大となるときの汚染濃度を1として、0.01となるときの汚染濃度であり、
前記Qplugはタンディッシュの残余溶鋼量(Qrm)と第1比例係数(g)を掛け算して得られ、前記Qpeakはタンディッシュの残余溶鋼量(Qrm)と第2比例係数(h)を掛け算して得られ、
前記第3段階で、特定の鋳造量に対する汚染濃度(C)は下記関係式1の直線関数と下記関係式2の指数関数によってそれぞれ計算される、レードル交換時の溶鋼汚染範囲予測方法。
- 前記第1比例係数(g)は0〜0.3の間で決定され、前記第2比例係数(h)は0.1〜0.4の間で決定される、請求項1に記載のレードル交換時の溶鋼汚染範囲予測方法。
- 前記第1比例係数(g)は、前記1次比例係数において0〜0.2の間で決定され、前記2次比例係数において0.1〜0.3の間で決定され、
前記第2比例係数(h)は、前記1次比例係数において0.1〜0.3の間で決定され、2次比例係数において0.2〜0.4の間で決定される、請求項1に記載のレードル交換時の溶鋼汚染範囲予測方法。 - 前記第3比例係数(f)は3〜8の間で決定される、請求項1〜3のいずれか一項に記載のレードル交換時の溶鋼汚染範囲予測方法。
- 前記1次比例係数を適用して得られた第4段階の汚染濃度と前記2次比例係数を適用して得られた第4段階の汚染濃度をそれぞれ加算して総合溶鋼汚染濃度(Tc)を算出し、前記総合溶鋼汚染濃度(Tc)は下記関係式3によって計算される、請求項1〜4のいずれか一項に記載のレードル交換時の溶鋼汚染範囲予測方法。
- 前記加重値(A)は0.25〜0.35の間の値である、請求項5に記載のレードル交換時の溶鋼汚染範囲予測方法。
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2010-0084133 | 2010-08-30 | ||
KR20100084133 | 2010-08-30 | ||
KR1020110086293A KR101299094B1 (ko) | 2010-08-30 | 2011-08-29 | 래들 교환시 용강 오염범위 예측 방법 |
KR10-2011-0086293 | 2011-08-29 | ||
PCT/KR2011/006422 WO2012030151A2 (ko) | 2010-08-30 | 2011-08-30 | 래들 교환시 용강 오염범위 예측 방법 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2013536087A JP2013536087A (ja) | 2013-09-19 |
JP5567214B2 true JP5567214B2 (ja) | 2014-08-06 |
Family
ID=46129619
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2013527012A Active JP5567214B2 (ja) | 2010-08-30 | 2011-08-30 | レードル交換時の溶鋼汚染範囲予測方法 |
Country Status (4)
Country | Link |
---|---|
US (1) | US9460248B2 (ja) |
JP (1) | JP5567214B2 (ja) |
KR (1) | KR101299094B1 (ja) |
CN (1) | CN103209783B (ja) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101299094B1 (ko) * | 2010-08-30 | 2013-08-27 | 현대제철 주식회사 | 래들 교환시 용강 오염범위 예측 방법 |
KR101485913B1 (ko) * | 2013-12-23 | 2015-01-26 | 주식회사 포스코 | 이강종의 연속주조 방법 |
DE102016206483A1 (de) * | 2016-04-18 | 2017-10-19 | Convotherm Elektrogeräte GmbH | Verfahren zum Feststellen einer Reinigungsnotwendigkeit und Qualitätsmanagement-Überwachungssystem eines gewerblichen Gargeräts, und gewerbliches Gargerät |
CN106041011A (zh) * | 2016-08-12 | 2016-10-26 | 湖南千盟物联信息技术有限公司 | 一种连铸中包余钢模型的实现方法 |
CN108372279B (zh) * | 2018-04-13 | 2020-01-07 | 东北大学 | 一种连铸浇注过程中间包浇余量的测量方法 |
CN108515156B (zh) * | 2018-04-13 | 2020-01-07 | 东北大学 | 一种连铸浇注过程大包浇余量的测量方法 |
CN110008561B (zh) * | 2019-03-28 | 2023-02-28 | 东北大学 | 一种钢液中颗粒移动的预测方法 |
Family Cites Families (32)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US110990A (en) * | 1871-01-17 | Improvement in producing refined cast-iron, steel, and malleable iron | ||
FR1473044A (fr) * | 1965-12-14 | 1967-03-17 | Siderurgie Fse Inst Rech | Procédé et dispositif pour l'obtention d'un débit de métal liquide constant |
US3537505A (en) * | 1965-12-30 | 1970-11-03 | Concast Ag | Method of controlling continuous casting |
AT297073B (de) * | 1969-04-15 | 1972-03-10 | Voest Ag | Verfahren zur Messung der Dicke der Schlackenschicht auf metallischen Bädern, insbesondere auf durch Vakuumbehandlung zu entgasenden Schmelzen |
JPS596385B2 (ja) * | 1978-05-17 | 1984-02-10 | 矢作製鉄株式会社 | 鋳鉄溶湯の黒鉛球状化度の迅速判定方法および装置 |
AT364754B (de) * | 1980-01-25 | 1981-11-10 | Voest Alpine Ag | Verfahren zum verhindern des eindringens von schlacke in eine stranggiesskokille beim stranggiessen sowie einrichtung zur durchfuehrung des verfahrens |
US4600047A (en) * | 1984-03-29 | 1986-07-15 | Sumitomo Metal Industries, Ltd. | Process for controlling the molten metal level in continuous thin slab casting |
CN1009578B (zh) * | 1986-02-22 | 1990-09-12 | 山西太原钢铁公司 | 熔渣检测装置 |
EP0542717B1 (en) * | 1988-12-20 | 1997-02-12 | Nippon Steel Corporation | Blast furnace operation management method and apparatus |
CH682376A5 (de) * | 1990-02-28 | 1993-09-15 | Stopinc Ag | Verfahren zum automatischen Angiessen von einer Stranggiessanlage. |
US5203909A (en) * | 1991-10-15 | 1993-04-20 | Ltv Steel Company, Inc. | Method and apparatus for slag free casting |
JPH067904A (ja) * | 1992-06-26 | 1994-01-18 | Nippon Steel Corp | 連続鋳造用タンディッシュにおける介在物除去方法および装置 |
JPH07124717A (ja) * | 1993-11-05 | 1995-05-16 | Nippon Steel Corp | 鍋交換部位鋳片の清浄な高清浄鋼の鋳造方法 |
US5633462A (en) * | 1994-07-19 | 1997-05-27 | Apa Systems | Method and apparatus for detecting the condition of the flow of liquid metal in and from a teeming vessel |
DE19508476A1 (de) * | 1995-03-09 | 1996-09-12 | Siemens Ag | Leitsystem für eine Anlage der Grundstoff- oder der verarbeitenden Industrie o. ä. |
US5884685A (en) * | 1995-03-29 | 1999-03-23 | Nippon Steel Corporation | Quality prediction and quality control of continuous-cast steel |
JPH08267219A (ja) * | 1995-03-30 | 1996-10-15 | Nippon Steel Corp | 溶融金属容器からのスラグ流出量の検知および制御方法 |
JPH08290259A (ja) * | 1995-04-18 | 1996-11-05 | Sumitomo Metal Ind Ltd | 取鍋スラグ検知・取鍋詰め砂除去方法およびその装置 |
US5650117A (en) * | 1995-09-27 | 1997-07-22 | Vesuvius Crucible Company | Slag detecting apparatus and method |
US6197086B1 (en) * | 1997-11-13 | 2001-03-06 | Bethlehem Steel Corporation | System and method for minimizing slag carryover during the production of steel |
JP2000317592A (ja) * | 1999-05-07 | 2000-11-21 | Nippon Steel Corp | 鍋交換部における清浄度の高い連鋳鋳片製造方法 |
US6808550B2 (en) * | 2002-02-15 | 2004-10-26 | Nucor Corporation | Model-based system for determining process parameters for the ladle refinement of steel |
AT413084B (de) * | 2003-12-02 | 2005-11-15 | Voest Alpine Ind Anlagen | Sequenzgiessverfahren zur herstellung eines gegossenen metallstranges hoher reinheit |
DE102004002783A1 (de) * | 2004-01-20 | 2005-08-04 | Sms Demag Ag | Verfahren und Einrichtung zum Bestimmen der Lage der Sumpfspitze im Gießstrang beim Stranggießen von flüssigen Metallen, insbesondere von flüssigen Stahlwerkstoffen |
RU2372407C2 (ru) * | 2004-01-30 | 2009-11-10 | Текнолоджикал Ресорсиз Пти. Лимитед | Получение железа и стали |
KR100709000B1 (ko) * | 2005-10-04 | 2007-04-18 | 주식회사 포스코 | 스테인레스강 주편 품질 온라인 예측 시스템 및 이를이용한 예지방법 |
CN1857830B (zh) * | 2006-05-30 | 2010-04-21 | 浙江大学 | 连铸钢包浇钢末期再次检测装置 |
US20110174457A1 (en) * | 2010-01-18 | 2011-07-21 | Evraz Inc. Na Canada | Process for optimizing steel fabrication |
KR101299094B1 (ko) * | 2010-08-30 | 2013-08-27 | 현대제철 주식회사 | 래들 교환시 용강 오염범위 예측 방법 |
CN103506592B (zh) * | 2012-06-29 | 2015-08-26 | 宝山钢铁股份有限公司 | 一种连铸浇钢控制方法和装置 |
KR101456453B1 (ko) * | 2012-07-24 | 2014-10-31 | 주식회사 포스코 | 주편 품질 예측 장치 및 그 방법 |
JP6381868B2 (ja) * | 2013-01-25 | 2018-08-29 | 株式会社神戸製鋼所 | チタンまたはチタン合金からなる鋳塊の連続鋳造方法 |
-
2011
- 2011-08-29 KR KR1020110086293A patent/KR101299094B1/ko active IP Right Grant
- 2011-08-30 JP JP2013527012A patent/JP5567214B2/ja active Active
- 2011-08-30 CN CN201180041952.2A patent/CN103209783B/zh active Active
-
2013
- 2013-02-27 US US13/778,933 patent/US9460248B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
US20130197885A1 (en) | 2013-08-01 |
US9460248B2 (en) | 2016-10-04 |
KR101299094B1 (ko) | 2013-08-27 |
KR20120021236A (ko) | 2012-03-08 |
JP2013536087A (ja) | 2013-09-19 |
CN103209783A (zh) | 2013-07-17 |
CN103209783B (zh) | 2015-01-21 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5567214B2 (ja) | レードル交換時の溶鋼汚染範囲予測方法 | |
KR101246207B1 (ko) | 연주공정에서 응고쉘의 핀홀 결함 예측장치 및 그 방법 | |
KR101400042B1 (ko) | 고품질 주편 제조방법 | |
KR101224982B1 (ko) | 이강종 연속주조시 강종 예측방법 | |
KR101400045B1 (ko) | 연속주조시 연연주 가능 예측방법 | |
AU2004295039B2 (en) | Sequential casting method for the production of a high-purity cast metal billet | |
KR101246193B1 (ko) | 이강종 연속주조시 강종 예측방법 | |
KR101368351B1 (ko) | 연속주조 시 응고쉘 두께 예측 방법 | |
KR101267341B1 (ko) | 연주공정에서 응고쉘의 브레이크아웃 방지 장치 및 그 방법 | |
KR101344897B1 (ko) | 연속주조시 판재의 품질 예측장치 및 그 방법 | |
JP2005320563A (ja) | 溶鋼温度管理方法 | |
KR101412536B1 (ko) | 연속주조시 연연주수 예측 장치 및 그 방법 | |
KR101505406B1 (ko) | 주편 품질 예측 방법 | |
KR101159598B1 (ko) | 몰드 파우더 점도 추정 방법 | |
KR101204946B1 (ko) | 연주공정에서 제품의 표면결함 예측 장치 및 그 방법 | |
KR101400047B1 (ko) | 극저탄소강 주조 제어방법 | |
KR101400041B1 (ko) | 용강의 탄소증가량 예측장치 및 그 방법 | |
KR20130013740A (ko) | 청정강 제조를 위한 플럭스 투입량 예측방법 | |
KR20120110583A (ko) | 연주공정에서 슬라브의 크랙 발생 예측방법 | |
KR101400036B1 (ko) | 고청정강 주편의 선별 방법 | |
KR101344902B1 (ko) | 강 품질 제어방법 | |
KR101435148B1 (ko) | 고강도 극저탄소강 슬라브 제조방법 | |
WO2012030151A2 (ko) | 래들 교환시 용강 오염범위 예측 방법 | |
Thomas | MODELING STUDY OF INTERMIXING IN | |
KR20140056712A (ko) | 몰드 탕면 유속 예측 방법 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20130227 |
|
A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20140127 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20140131 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20140430 |
|
TRDD | Decision of grant or rejection written | ||
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20140523 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20140618 |
|
R150 | Certificate of patent or registration of utility model |
Ref document number: 5567214 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |