EP0040383B1 - Procédé et dispositif pour le brassage du métal liquide dans un lingot de coulée continue - Google Patents
Procédé et dispositif pour le brassage du métal liquide dans un lingot de coulée continue Download PDFInfo
- Publication number
- EP0040383B1 EP0040383B1 EP81103569A EP81103569A EP0040383B1 EP 0040383 B1 EP0040383 B1 EP 0040383B1 EP 81103569 A EP81103569 A EP 81103569A EP 81103569 A EP81103569 A EP 81103569A EP 0040383 B1 EP0040383 B1 EP 0040383B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pouring
- ingot mould
- stream
- fields
- pouring stream
- 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.)
- Expired
Links
- 238000000034 method Methods 0.000 title claims description 18
- 238000003756 stirring Methods 0.000 title claims description 8
- 239000002184 metal Substances 0.000 title claims description 6
- 229910052751 metal Inorganic materials 0.000 title claims description 6
- 238000009749 continuous casting Methods 0.000 title claims description 4
- 230000035515 penetration Effects 0.000 claims description 12
- 230000003068 static effect Effects 0.000 claims description 11
- 230000000694 effects Effects 0.000 claims description 5
- 230000001154 acute effect Effects 0.000 claims description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 2
- 239000002893 slag Substances 0.000 description 16
- 239000000155 melt Substances 0.000 description 15
- 238000005266 casting Methods 0.000 description 11
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 239000002245 particle Substances 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 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
- B22D11/10—Supplying or treating molten metal
- B22D11/11—Treating the molten metal
- B22D11/114—Treating the molten metal by using agitating or vibrating means
- B22D11/115—Treating the molten metal by using agitating or vibrating means by using magnetic fields
Definitions
- the invention relates to a method for stirring in a casting strand according to the preamble of claim 1 and an apparatus for performing the method.
- the invention has for its object to develop a method and implementation arrangement by which the difficulties outlined above are eliminated.
- beat which according to the invention in the kenn. drawing part of claim 1 said features.
- a device for performing the method is characterized by the features mentioned in claim 7.
- a static magnetic field with a large penetration depth is thus generated and the high speed of the steel in the pouring jet is used when penetrating into the melt in the mold (penetration speed).
- This penetration speed is on the order of 1 to 1.5 m / sec.
- the movement of the steel is slowed down by the magnetic field and the pouring jet splinters.
- the mode of operation is comparable to an eddy current brake.
- the depth of penetration is reduced and most of the slag is deposited on the surface and no longer gets stuck on the inside of the strand shell that has already solidified.
- the static magnetic field can also be generated by one or more permanent magnets.
- a simple and effective device for “stirring” in the mold is thus obtained, the slag being separated off without getting caught in the blank.
- the poles (the area of attack of the field) are arranged at an acute angle to the pouring jet in such a way that the pouring jet essentially splinters upwards. This prevents slag from being pressed down in the pouring direction, where it can get caught.
- more heat is added to the surface in the mold, especially on the pouring tube.
- the impulse exerted by the pouring jet on the melt in the mold is reduced and its effect is spread out from the point of entry into the melt in such a way that the stream of the pouring jet does not hit the narrow side of the blank, which causes a slag accumulation at the edge of the blank and one Shell erosion can be reduced.
- the invention therefore makes it possible to also produce steel with a high surface quality in terms of slag purity.
- Figure 1 shows how a pouring stream over a pouring tube 1 from a casting box or not shown another melt container comes.
- the pouring tube has a downward double drain, and the impulse is directed to the narrow side of the mold 4, where slag settles in the strand shell. There is also a risk of slag penetration further down in the pouring direction (arrows 5).
- FIG. 2 shows the penetration with pouring jets directed upwards from a pouring tube 8, indicated by the arrows 9.
- FIG. 3 shows how the pouring jets 10 coming from a pouring tube 11 are directed in the melt and are broken up, whereby slag particles are more easily separated on the surface.
- the stirring can also be carried out by conventional multi-phase stirrers supplied with alternating current, which are mounted behind the mold in (on) or in the casting direction, in order to also obtain the usual stirring effects during continuous casting.
- the pouring stream can also be broken up and influenced if it is poured into the melt from a pouring box rather than through a pouring tube.
- FIGS. 4 and 5 The device according to the invention is illustrated in FIGS. 4 and 5, where a static magnetic field B from a stirrer in the form of an iron core 15 carrying coils 16 'supplied with direct current is shown.
- the field can be directed inward to the left of the pouring tube 18, which has a double drain, and outward to the right of the pouring tube.
- the splitting of the pouring jets 16 and 17 takes place in the manner indicated by arrows in FIG. 3, and the slag only settles to a small extent on the narrow sides of the mold and further down in the pouring direction.
- the device for carrying out the method can be equipped with one or more controllable DC stirrers. It can also contain one or more multi-phase AC stirrers, which are arranged on the mold or in the casting direction behind the mold, with their stirring direction being oriented perpendicularly or in the longitudinal direction to the casting direction.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
Claims (12)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES511019A ES511019A0 (es) | 1980-05-19 | 1982-03-31 | Metodo y su correspondiente dispositivo para agitar las regiones no solidificadas de una barra de acero fundido. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE8003695 | 1980-05-19 | ||
SE8003695A SE436251B (sv) | 1980-05-19 | 1980-05-19 | Sett och anordning for omrorning av de icke stelnade partierna av en gjutstreng |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0040383A1 EP0040383A1 (fr) | 1981-11-25 |
EP0040383B1 true EP0040383B1 (fr) | 1983-10-12 |
Family
ID=20340983
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP81103569A Expired EP0040383B1 (fr) | 1980-05-19 | 1981-05-11 | Procédé et dispositif pour le brassage du métal liquide dans un lingot de coulée continue |
Country Status (7)
Country | Link |
---|---|
US (1) | US4495984A (fr) |
EP (1) | EP0040383B1 (fr) |
JP (1) | JPS5717356A (fr) |
BR (1) | BR8103058A (fr) |
CA (1) | CA1178779A (fr) |
DE (1) | DE3161171D1 (fr) |
SE (1) | SE436251B (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3134220B1 (fr) | 2014-04-25 | 2019-09-04 | ThyssenKrupp Steel Europe AG | Procédé et dispositif de coulée continue de brames minces |
Families Citing this family (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5853669A (ja) * | 1981-09-28 | 1983-03-30 | Hitachi Ltd | 内燃機関用燃料噴射ポンプ装置 |
SE8202431L (sv) * | 1982-04-19 | 1983-10-20 | Asea Ab | Omroring i gjutstreng |
FR2530511B1 (fr) * | 1982-07-23 | 1985-07-05 | Cegedur | Procede de coulee de metaux dans lequel on fait agir des champs magnetiques |
FR2530510B1 (fr) * | 1982-07-23 | 1985-07-05 | Cegedur | Procede de coulee electromagnetique de metaux dans lequel on fait agir au moins un champ magnetique different du champ de confinement |
JPS5976647A (ja) * | 1982-10-22 | 1984-05-01 | Kawasaki Steel Corp | 連続鋳造における鋳込み溶鋼の撹拌方法および装置 |
SE459401B (sv) * | 1986-10-20 | 1989-07-03 | Asea Ab | Saett och anordning foer bromsning och/eller omroerning av de icke stelnade partierna av en gjutstraeng |
JPS63260652A (ja) * | 1987-04-20 | 1988-10-27 | Kawasaki Steel Corp | 連続鋳造におけるモ−ルドパウダ−の巻き込み防止方法 |
US4824078A (en) * | 1987-08-19 | 1989-04-25 | Massachusetts Institute Of Technology | Magnetic streamlining and flow control in tundishes |
US4949778A (en) * | 1987-12-16 | 1990-08-21 | Kawasaki Steel Corporation | Immersion nozzle for continuous casting |
KR930002836B1 (ko) * | 1989-04-27 | 1993-04-10 | 가와사끼 세이데쓰 가부시까가이샤 | 정자장을 이용한 강철의 연속 주조방법 |
CA2011410C (fr) * | 1990-03-02 | 1996-12-31 | Mikio Suzuki | Methode de coulee continue de l'acier |
DE69217515T2 (de) * | 1991-06-05 | 1997-06-05 | Kawasaki Steel Co | Stranggiessen von Stahl |
CA2059030C (fr) * | 1992-01-08 | 1998-11-17 | Jun Kubota | Methode permettant la coulee continue de plaques d'acier |
WO1995026243A1 (fr) * | 1994-03-29 | 1995-10-05 | Nippon Steel Corporation | Procede de commande de flux dans un moule de coulee a l'aide d'un champ magnetique cc |
US5540672A (en) * | 1994-06-13 | 1996-07-30 | Kimberly-Clark Corporation | Absorbent article having dual asymmetric leg elastics |
SE503562C2 (sv) * | 1995-02-22 | 1996-07-08 | Asea Brown Boveri | Sätt och anordning för stränggjutning |
GB2312861B (en) * | 1996-05-08 | 1999-08-04 | Keith Richard Whittington | Valves |
DE19625932A1 (de) * | 1996-06-28 | 1998-01-08 | Schloemann Siemag Ag | Elektromagnetische Bremse für eine Stranggießkokille |
EP0832704A1 (fr) * | 1996-09-19 | 1998-04-01 | Hoogovens Staal B.V. | Installation de coulée continue |
SE509112C2 (sv) | 1997-04-18 | 1998-12-07 | Asea Brown Boveri | Anordning vid kontinuerlig gjutning av två ämnen i parallell |
SE9703170D0 (sv) * | 1997-09-03 | 1997-09-03 | Asea Brown Boveri | Förfarande och anordning för att styra metallflödet i en kokill för stränggjutning genom att applicera elektromagnetiska fält i ett flertal nivåer |
FR2772294B1 (fr) * | 1997-12-17 | 2000-03-03 | Rotelec Sa | Equipement de freinage electromagnetique d'un metal en fusion dans une installation de coulee continue |
KR100376504B1 (ko) * | 1998-08-04 | 2004-12-14 | 주식회사 포스코 | 연속주조방법및이에이용되는연속주조장치 |
KR101213559B1 (ko) * | 2004-12-22 | 2012-12-18 | 겐조 다카하시 | 교반장치 및 방법과, 그 교반장치를 이용한 교반장치 부착용해로 |
DE102009029889A1 (de) * | 2008-07-15 | 2010-02-18 | Sms Siemag Ag | Elektromagnetische Bremseinrichtung an Stranggießkokillen |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA531772A (fr) * | 1956-10-16 | Continuous Metalcast Co. | Methode et appareil pour le moulage continu de metal | |
US3153820A (en) * | 1961-10-09 | 1964-10-27 | Charles B Criner | Apparatus for improving metal structure |
DE1962341B2 (de) * | 1969-12-12 | 1971-06-24 | Aeg Elotherm Gmbh | Anordnung einer mehrphasigen elektromagnetischen wicklung am strangfuehrungsgeruest einer stranggiessanlage |
US3693697A (en) * | 1970-08-20 | 1972-09-26 | Republic Steel Corp | Controlled solidification of case structures by controlled circulating flow of molten metal in the solidifying ingot |
US3842895A (en) * | 1972-01-10 | 1974-10-22 | Massachusetts Inst Technology | Metal alloy casting process to reduce microsegregation and macrosegregation in casting |
FR2187465A1 (en) * | 1972-06-08 | 1974-01-18 | Siderurgie Fse Inst Rech | Continuously casting metal melts - with reduced amount of inclusions, has molten metal introduced below melt surface |
US4200137A (en) * | 1975-04-22 | 1980-04-29 | Republic Steel Corporation | Process and apparatus for the continuous casting of metal using electromagnetic stirring |
SE410153B (sv) * | 1976-05-21 | 1979-10-01 | Asea Ab | Anleggning vid strenggjutning |
FR2358222A1 (fr) * | 1976-07-13 | 1978-02-10 | Siderurgie Fse Inst Rech | Nouveaux procede et dispositif pour le brassage electromagnetique de produits metalliques coules en continu |
FR2391015A1 (fr) * | 1977-05-18 | 1978-12-15 | Siderurgie Fse Inst Rech | Perfectionnement au procede de coulee continue centrifuge de produits metalliques et dispositif de mise en oeuvre |
JPS5419377A (en) * | 1977-07-14 | 1979-02-14 | Sharp Corp | Production of semiconductor device |
US4158380A (en) * | 1978-02-27 | 1979-06-19 | Sumitomo Metal Industries Limited | Continuously casting machine |
-
1980
- 1980-05-19 SE SE8003695A patent/SE436251B/sv not_active IP Right Cessation
-
1981
- 1981-05-11 DE DE8181103569T patent/DE3161171D1/de not_active Expired
- 1981-05-11 EP EP81103569A patent/EP0040383B1/fr not_active Expired
- 1981-05-15 JP JP7237781A patent/JPS5717356A/ja active Granted
- 1981-05-18 BR BR8103058A patent/BR8103058A/pt not_active IP Right Cessation
-
1982
- 1982-03-25 CA CA000399453A patent/CA1178779A/fr not_active Expired
-
1983
- 1983-08-30 US US06/527,508 patent/US4495984A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3134220B1 (fr) | 2014-04-25 | 2019-09-04 | ThyssenKrupp Steel Europe AG | Procédé et dispositif de coulée continue de brames minces |
Also Published As
Publication number | Publication date |
---|---|
US4495984A (en) | 1985-01-29 |
CA1178779A (fr) | 1984-12-04 |
SE436251B (sv) | 1984-11-26 |
JPH0220349B2 (fr) | 1990-05-09 |
JPS5717356A (en) | 1982-01-29 |
SE8003695L (sv) | 1981-11-20 |
BR8103058A (pt) | 1982-02-09 |
DE3161171D1 (en) | 1983-11-17 |
EP0040383A1 (fr) | 1981-11-25 |
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