DE2408285A1 - COCILLA FOR FULLY CONTINUOUS CASTING OF METALLIC RIGS - Google Patents
COCILLA FOR FULLY CONTINUOUS CASTING OF METALLIC RIGSInfo
- Publication number
- DE2408285A1 DE2408285A1 DE19742408285 DE2408285A DE2408285A1 DE 2408285 A1 DE2408285 A1 DE 2408285A1 DE 19742408285 DE19742408285 DE 19742408285 DE 2408285 A DE2408285 A DE 2408285A DE 2408285 A1 DE2408285 A1 DE 2408285A1
- Authority
- DE
- Germany
- Prior art keywords
- water
- casting
- metallic
- cross
- continuous casting
- 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.)
- Pending
Links
- 238000009749 continuous casting Methods 0.000 title claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 238000005266 casting Methods 0.000 claims description 12
- 238000001816 cooling Methods 0.000 claims description 6
- 238000007493 shaping process Methods 0.000 claims description 6
- 239000002826 coolant Substances 0.000 claims description 5
- 238000005242 forging Methods 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 3
- 239000002184 metal Substances 0.000 description 4
- 239000000498 cooling water Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 229910001338 liquidmetal Inorganic materials 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000005499 meniscus Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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
- B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
- B22D11/049—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds for direct chill casting, e.g. electromagnetic 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
- B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
-
- 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
- B22D11/124—Accessories for subsequent treating or working cast stock in situ for cooling
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Metal Rolling (AREA)
Description
"VEREINIGTE ALIMINIIM-WERKE
AKTIENGESELLSCHAFT
BONN"UNITED ALIMINIIM WORKS
SHARED COMPANY
BONN
Kokille zum vollkontinuierlichen Gießen von metallischen SträngenMold for the fully continuous casting of metallic strands
Gegenstand des DBP 1 957 314 ist eine Stranggießkokille für metallische Stränge dünnen Querschnitts mit indirekter und anschließend direkter Wasserkühlung des Stranges, "bei der Zutrittsöffnungen für das Kühlmedium am vorderen Ende von Spalten vorgesehen sind, die unterhalt des formgebenden Teiles durch in Gießrichtung verlaufende Stege zur Strangführung gebildet sind, wobei in .Gießrichtung hinter den Wasserzutrittsöffnungen in Art einer Wasserstrahlpumpe Luftkanäle münden, wobei die Spalte in ihren Querschnitten gleichbleibend gehalten sind.The subject of DBP 1 957 314 is a continuous casting mold for metallic ones Strands of thin cross-section with indirect and then direct water cooling of the strand, "provided with access openings for the cooling medium at the front end of columns are, which are formed under maintenance of the shaping part by webs running in the casting direction for strand guidance, wherein in .Gießrichtung Air channels open behind the water inlet openings in the manner of a water jet pump, the gaps in their cross-sections are kept constant.
Während sich dieses Patent auf das Gießen von metallischen Strängen dünnen Querschnitts bezieht, wurde gefunden, daß die gleiche Kokille auch zum Gießen von Strängen größeren Querschnitts, insbesondere Walzbarren, Preßbarren, Rohlingen für Schmiedepressen, speziell Profilen, geeignet ist.While this patent is on the casting of metallic strands relates to thin cross-section, it was found that the same mold can also be used for casting strands of larger cross-section, in particular Rolling bars, pressing bars, blanks for forging presses, especially profiles, is suitable.
Gegenstand der Erfindung ist demnach die Anwendung einer Stranggießkokille für metallische Stränge dünnen Querschnitts mit indirekter und anschließend direkter Wasserkühlung des Stranges, bei der Zutritts öffnungen für das Kühlmedium am vorderen Ende von Spalten vorgesehen sind, die unterhalb des formgebenden Teiles durch in Gießrichtung verlaufende Stege zur Strangführung gebildet sind, wobei in Gießrichtung hinter den Wasserzutrittsöffnungen in Art einer Wasserstrahlpumpe Luftkanäle münden, wobei die Spalte in ihren Querschnitten gleichbleibend gehalten sind, zum Gießen von Strängen größeren Querschnitts wie Preßbarren, Walzbarren, Rohlingen für Schmiedepressen, speziell Profilen.The invention therefore relates to the use of a continuous casting mold For metallic strands with a thin cross-section with indirect and then direct water cooling of the strand upon entry Openings for the cooling medium are provided at the front end of gaps that extend below the shaping part through in the casting direction running webs for strand guidance are formed, in the pouring direction behind the water inlet openings in the manner of a water jet pump Open air channels, the gaps being kept constant in their cross-sections, for casting strands larger cross-sections such as billets, rolling billets, blanks for forging presses, especially profiles.
Die Kokille kann die gleiche Ausgestaltung haben -wie diejenige nach dem Patent 1 957 312N jedoch mit einem der -jeweiligen Dimension des Stranges angepaßten Durchlaufquerschnitt der Kokille.The mold can have the same design - as that according to patent 1 957 31 2 N, but with a passage cross section of the mold that is adapted to the respective dimension of the strand.
5098 36/04265098 36/0426
Zur weiteren Erläuterung der Erfindung dienen die Zeichnungen, die eine Ausführungsform beispielsweise und schematisch wiedergeben. Es -The drawings serve to further explain the invention show an embodiment example and schematically. It -
Figur 1 einen Ausschnitt in räumlicher Darstellung, in der die Gießrichtung durch einen Pfeil angegeben ist, FIG. 1 shows a detail in a three-dimensional representation in which the direction of casting is indicated by an arrow,
Figur 2 einen Teil eines senkrechten Schnittes in Gießrichtung. FIG. 2 shows part of a vertical section in the casting direction.
Beide Figuren sind zusammen zu betrachten.Both figures are to be viewed together.
1 ist eine Vorkammer, in der der Metallstand durch stetiges Maehfüllen von geschmolzenem Metall konstant gehalten wird. Das flüssige Metall tritt durch den Spalt 2 in der Abdeckplatte 3 in den Kokillenraum 4 ein. Die Abdeckplatte 3 besteht aus einem wärmeisolierenden Material und schließt die der Strangaustrittsseite entgegengesetzte Seite des formgebenden Kokillenraumes 4 ab. Der Kokillenraum 4 wird gebildet von den wassergekühlten Arbeitsflächen 5· Das Kühlwasser wird unter Druck in die Wasserkammern 6 eingeleitet und verläßt sie durch die runden Kanäle 7· Auf seinem Weg kühlt es die Arbeitsflächen 5 des formgebenden Kokillenraumes 4 und tritt dann aus den Öffnungen aus, um das Band 9 direkt zu kühlen. Das Metall, das aus dem Spalt in den Kokillenraum 4 eingeflossen ist, erstarrt sofort oberflächlich durch die Kühlwirkung der wassergekühlten Arbeitsflächen 5· An den formgebenden Kokillenraum 4 mit indirekter Kühlung schließt sich ein Raum 10 an, in dem das oberflächlich erstarrte Band durch direkte Einwirkung des Kühlmittels weiter gekühlt wird.1 is an antechamber in which the metal level is constantly filled with mowing is kept constant by molten metal. The liquid metal passes through the gap 2 in the cover plate 3 into the mold space 4 a. The cover plate 3 consists of a heat insulating Material and closes off the side of the shaping mold space 4 opposite the strand exit side. The mold space 4 is formed by the water-cooled work surfaces 5 · The cooling water is introduced under pressure into the water chambers 6 and leaves them through the round channels 7 · On its way it cools the work surfaces 5 of the shaping mold space 4 and then emerges from the openings to cool the belt 9 directly. The metal that has flowed from the gap into the mold space 4 solidifies immediately on the surface due to the cooling effect of the water-cooled work surfaces 5 · An the shaping mold space 4 with indirect cooling is followed by a space 10 in which the strip that has solidified on the surface passes through direct action of the coolant is further cooled.
Zwischen der Oberfläche des aus dem Kokillenraum 4· austretenden Bandes 9 und der Begrenzungsfläche 11 des Raumes 10 liegt ein Spalt 12, der das ganze Band quer zur Gießrichtung umgibt. Der Übergang von der engen Öffnung 8 auf den größeren Querschnitt des Spaltes 12 führt zu d-enu gewünscht en Wasserstrahlpumpeneffekt. Im gewählten Beispiel ist der Spalt 12 durch Stege 13 unterteilt. Erfindungsgemäß ist nun, im Gegensatz zu der Vorrichtung der Spalt 12 in seinem Querschnitt gleichbleibend gehalten. Dadurch wird der bisher auftretende Rückstau des durch den Kanal 7 zutretenden Kühlwassers bedeutend verringert. Between the surface of the 4 · emerging from the mold space Band 9 and the boundary surface 11 of the space 10 is a gap 12, which surrounds the entire band transversely to the casting direction. The transition from the narrow opening 8 to the larger cross section of the gap 12 leads to the desired water jet pump effect. In the example chosen the gap 12 is divided by webs 13. According to the invention is now, In contrast to the device, the gap 12 is kept constant in its cross section. This eliminates the backwater that has occurred so far of the cooling water entering through the channel 7 is significantly reduced.
Im gezeichneten Ausführungsbeispiel ist der Austrittsteil 14 der Wasserzuführungskanäle 7 parallel zur Strangrichtung gehalten. Dadurch wird der Rückstau des Kühlwassers weiter vermindert bzw. sogarIn the illustrated embodiment, the outlet part 14 of the water supply channels 7 is held parallel to the strand direction. Through this the backflow of the cooling water is further reduced or even
509836/0426509836/0426
völlig vermieden.completely avoided.
In den Spalt 12 münden Kanäle 17, durch, die infolge des Unter druckes Wasser, ein Wasser-Luft-Gemisch oder gegebenenfalls auch nur Luft angesaugt wird. Die Kanäle 17 nehmen ihren Ausgang in den Kammern 18, die durch Öffnungen mit Hähnen mit der Außenluft und/oder einer Wasserzuleitung in Verbindung stehen. Durch diese Hähne können das austretende Kühlmittel und der Druck in den Kammern 18 eingestellt oder automatisch gestauert werden.In the gap 12 open channels 17 through, the pressure as a result of the negative Water, a water-air mixture or, if necessary, just air is sucked in. The channels 17 take their exit in the chambers 18, through openings with taps with the outside air and / or a Water supply are connected. The escaping coolant and the pressure in the chambers 18 can be adjusted through these taps or automatically jammed.
Wählt man die Variante, daß durch die Kanäle 17 Wasser in den Spalt eingeführt wird, läßt sich die Kühlwirkung der Kokille erheblich steigern, was überraschenderweise die Reißneigung des gegossenen Barrens, insbesondere bei hohen Gießgeschwindigkeiten, herabsetzt.If you choose the variant that through the channels 17 water into the gap is introduced, the cooling effect of the mold can be increased considerably, which surprisingly reduces the tendency of the cast to crack Barrens, especially at high casting speeds, decreases.
Das in den Kokillenraum 4- einfließende Metall füllt die Ecke zwischen der Abdeckplatte 3 und den Arbeitsflächen 5 nicht aus, sondern formt infolge seiner Oberflächenspannung einen Meniskus, so daß sich ein Hohlraum 19 bildet. Die Oberfläche des Bandes 9 bildet mit der Arbeitsfläche 5 im allgemeinen keinen luftdichten Abschluß, so daß der im Spalt 12 entstehende Unterdruck sich auch auf den Hohlraum 19 ausdehnen kann. Dieser Unterdruck kann ein Schmiermittel über die Ölkanäle 20 und Zwischenlagen 21 aus porösem feuerfestem Material ansaugen, was aber nicht zur Erfindung gehört.The metal flowing into the mold space 4- does not fill the corner between the cover plate 3 and the work surfaces 5, but forms a meniscus as a result of its surface tension, so that a cavity 19 is formed. The surface of the belt 9 forms generally no airtight seal with the work surface 5, so that the negative pressure created in the gap 12 can also expand to the cavity 19. This negative pressure can be a lubricant Suction through the oil channels 20 and intermediate layers 21 made of porous refractory material, but this is not part of the invention.
509836/042 8509836/042 8
Claims (1)
Priority Applications (10)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19742408285 DE2408285A1 (en) | 1974-02-21 | 1974-02-21 | COCILLA FOR FULLY CONTINUOUS CASTING OF METALLIC RIGS |
| SE7501275A SE7501275L (en) | 1974-02-21 | 1975-02-05 | |
| NL7501564A NL7501564A (en) | 1974-02-21 | 1975-02-10 | COQUILLE FOR COMPLETE CONTINUOUS CASTING OF METALLIC STRANDS. |
| IT67369/75A IT1030129B (en) | 1974-02-21 | 1975-02-12 | SHELL FOR CASTING TOTALLY CONTIUA OF METAL BARS |
| FR7504444A FR2261823A1 (en) | 1974-02-21 | 1975-02-13 | Ingot mould for continuous casting - of strip or bar using indirect and direct cooling by air and water |
| BE2054153A BE825598A (en) | 1974-02-21 | 1975-02-17 | LINGOTIER FOR CASTING METAL BARS |
| CH198575A CH590098A5 (en) | 1974-02-21 | 1975-02-18 | |
| NO750547A NO750547L (en) | 1974-02-21 | 1975-02-18 | |
| JP50019995A JPS50119723A (en) | 1974-02-21 | 1975-02-19 | |
| LU71883A LU71883A1 (en) | 1974-02-21 | 1975-02-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19742408285 DE2408285A1 (en) | 1974-02-21 | 1974-02-21 | COCILLA FOR FULLY CONTINUOUS CASTING OF METALLIC RIGS |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE2408285A1 true DE2408285A1 (en) | 1975-09-04 |
Family
ID=5908034
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19742408285 Pending DE2408285A1 (en) | 1974-02-21 | 1974-02-21 | COCILLA FOR FULLY CONTINUOUS CASTING OF METALLIC RIGS |
Country Status (10)
| Country | Link |
|---|---|
| JP (1) | JPS50119723A (en) |
| BE (1) | BE825598A (en) |
| CH (1) | CH590098A5 (en) |
| DE (1) | DE2408285A1 (en) |
| FR (1) | FR2261823A1 (en) |
| IT (1) | IT1030129B (en) |
| LU (1) | LU71883A1 (en) |
| NL (1) | NL7501564A (en) |
| NO (1) | NO750547L (en) |
| SE (1) | SE7501275L (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2909990A1 (en) * | 1978-03-13 | 1979-10-04 | Aluminum Co Of America | METHOD OF CASTING BLOCKS |
| DE3346151A1 (en) * | 1983-05-26 | 1984-11-29 | Schweizerische Aluminium Ag, Chippis | Process for casting a strand, especially of aluminium or an aluminium alloy |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH528939A (en) * | 1968-11-12 | 1972-10-15 | Vaw Ver Aluminium Werke Ag | Device for the fully continuous casting of metallic strands of thin cross-section, such as strips, wires or the like |
-
1974
- 1974-02-21 DE DE19742408285 patent/DE2408285A1/en active Pending
-
1975
- 1975-02-05 SE SE7501275A patent/SE7501275L/xx unknown
- 1975-02-10 NL NL7501564A patent/NL7501564A/en not_active Application Discontinuation
- 1975-02-12 IT IT67369/75A patent/IT1030129B/en active
- 1975-02-13 FR FR7504444A patent/FR2261823A1/en active Granted
- 1975-02-17 BE BE2054153A patent/BE825598A/en not_active IP Right Cessation
- 1975-02-18 CH CH198575A patent/CH590098A5/xx not_active IP Right Cessation
- 1975-02-18 NO NO750547A patent/NO750547L/no unknown
- 1975-02-19 LU LU71883A patent/LU71883A1/xx unknown
- 1975-02-19 JP JP50019995A patent/JPS50119723A/ja active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2909990A1 (en) * | 1978-03-13 | 1979-10-04 | Aluminum Co Of America | METHOD OF CASTING BLOCKS |
| DE3346151A1 (en) * | 1983-05-26 | 1984-11-29 | Schweizerische Aluminium Ag, Chippis | Process for casting a strand, especially of aluminium or an aluminium alloy |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2261823B3 (en) | 1977-10-21 |
| IT1030129B (en) | 1979-03-30 |
| BE825598A (en) | 1975-06-16 |
| NL7501564A (en) | 1975-08-25 |
| LU71883A1 (en) | 1975-06-24 |
| JPS50119723A (en) | 1975-09-19 |
| FR2261823A1 (en) | 1975-09-19 |
| SE7501275L (en) | 1975-08-22 |
| CH590098A5 (en) | 1977-07-29 |
| NO750547L (en) | 1975-08-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OHW | Rejection |