US3463220A - Method for continuous casting of thin bands,plates - Google Patents
Method for continuous casting of thin bands,plates Download PDFInfo
- Publication number
- US3463220A US3463220A US566589A US3463220DA US3463220A US 3463220 A US3463220 A US 3463220A US 566589 A US566589 A US 566589A US 3463220D A US3463220D A US 3463220DA US 3463220 A US3463220 A US 3463220A
- Authority
- US
- United States
- Prior art keywords
- chill
- passage
- strand
- cooling
- metal
- 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 - Lifetime
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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
- B22D11/14—Plants for continuous 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
- B22D11/045—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds for horizontal 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
- 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
- B22D11/12—Accessories for subsequent treating or working cast stock in situ
- B22D11/124—Accessories for subsequent treating or working cast stock in situ for cooling
- B22D11/1243—Accessories for subsequent treating or working cast stock in situ for cooling by using cooling grids or cooling plates
Definitions
- the present invention relates to a method for continuous casting of thin bands, plates and the like having preferably a thickness of less than 30 mm. in either substantially horizontal or substantially vertical direction.
- Methods and apparatus are also known in which the metal to be cast is fed in liquid form into one end of a vertically extending passage through a water cooled mold or chill and in which the molten metal is solidified at least at outer surface portions thereof by indirect cooling provided by the water cooled chill.
- the metal shrinks during its passage through the water cooled chill so that the solidified outer portions of the metal strand will become disengaged from the water cooled wall portions forming the passage through the chill, whereby the cooling effect provided by the chill onto the metal is considerably reduced so that the cast and only partly solidified metal strand may be heated up again by its hot liquid core which may lead to a destruction of the solidified outer skin thereof.
- the method according to the present invention for continuous casting of thin bands, plates and the like mainly comprises the steps of feeding molten metal in a continuous stream and with a predetermined casting speed through a passage of a chill having a cross section substantially equal to the cross section of the band to be cast, cooling the walls forming a first portion of the passage so as to indirectly cool the metal passing therethrough and to solidify outer surface portions thereof so as to form an at least partly solidified strand of metal, supporting the strand along longitudinally extending and transversely spaced surface portions thereof in a second portion of the passage, and feeding a cooling fluid under pressure and at a speed greater than the aforementioned casting speed in longitudinal direction through said second portion of the passage in contact with the surface portions of the strand which are not supported so as to directly cool the strand.
- the cooling effect produced by the cooling fluid on the strand will not be affected by any shrinkage of the strand so that the latter will be efiectively cooled and substantially completely solidified before leaving the chill.
- the method according to the present invention permits however the production of thin bands and thin plates in a continuous casting process so that a subsequent rolling process for forming such thin bands or plates and the necessary rolling mill for carrying out this rolling process becomes unnecessary.
- the method according to the present invention has therefore, as compared with known methods for the production of thin bands and plates, the advantage of smaller initial cost for the apparatus, of simpler operation and the possibility to more quickly exchange the parts which define the form of the cast strand.
- a mixture of water in air is therefore used for direct cooling of the cast strand in the chill, whereby the chill is constructed in such a manner that such a mixture of air and water may be directly produced in the chill.
- the chill is constructed in such a manner that such a mixture of air and water may be directly produced in the chill.
- FIG. 1 is a longitudinal cross section through a chill according to the present invention in which the passage through the chill is horizontally arranged;
- FIG. 2 is a partial perspective view of the passage through the chill viewed from the outlet end, or the left end as viewed in FIG. 1, of the passage;
- FIG. 3 is a longitudinal cross section of a chill similar to that shown in FIG. 1 with the passage through the chill arranged in vertical direction;
- FIG. 4 is a perspective view of the passage viewed from the outlet end, that is the bottom end as viewed in FIG. 3;
- FIG. 5 is a longitudinal cross section through a further modification of the chill constructed for producing a mixture of cooling water and cooling air therein;
- FIG. 6 is a cross section similar to FIG. 5, drawn to a smaller scale, and illustrating also schematically means for automatic control of the amount of cooling water and cooling air fed into the chill.
- the chill C shown in FIG. 1 is formed with a substantially central passage 1 therethrough which in the arrangement shown in FIG. 1 is horizontally arranged and which has an inlet end at the right side, as viewed in FIG. 1, and an outlet end at the left side.
- the walls of the chill forming further an enclosed space 6 about the passage 1 into which a cooling fluid, for instance cooling water, is fed through an inlet opening 6 from a source of cooling water, not shown in the drawing.
- the passage 1 has a first passage portion 1a extending from the right inlet end, as viewed in FIG.
- the second portion 1b of the passage 1 extends from the inner end of the first passage portion 1a up to the left outlet end of the passage.
- a plurality of slots 7 extend in longitudinal direction of the second passage portion 1b transversely spaced from each other, as best shown in FIG. 2, to define between themselves a plurality of ribs 8.
- the slots 7 are open toward the second passage portion 1b and the slots 7 and ribs 8 are preferably arranged on opposite wall portions and respectively aligned with each other as shown in FIG. 2.
- Bores 4 inclined at about to the longitudinal axis of the passage 1 extend from the inner ends of the slots 7 closely adjacent to the first passage portion 1a and bores 5 provide communication between the outer ends of the bores 4 and the space 6 of the chill so that cooling water may flow from the space 6 through the bores 5 and 4 into the respective slots 7.
- the arrangement includes further a plate 2 of refractory material abutting against the right end wall, as viewed in FIG. 1, of the chill C, and the plate 2 is formed with a slot 3 therethrough which communicates with the inlet end of the passage 1 and through which by means of known construction, not shown in the drawing, molten metal is continuously fed into the passage 1.
- the molten metal reaching the inlet end of the passage will be indirectly cooled during passage thereof through the first passage portion 1a and partly solidified, and in the second passage portion 1b the cooling water passing through the slots 7 will come in direct contact with the partly solidified metal to further cool and solidify the same as it passes through the second passage portion 1b.
- the cooling efficiency in the second passage portion will not be detrimentally affected by any shrinkage of the metal strand, since even if the metal shrinks to a considerable extent in this passage portion the cooling water will still remain in contact with the metal.
- FIGS. 3 and 4 The arrangement shown in FIGS. 3 and 4 is substantially the same as the arrangement discussed in connection with FIGS. 1 and 2, the only difference being that in this arrangement the passage 1 is arranged in vertical direction so that the strand may be cast in vertical direction.
- the arrangement shown in FIG. 5 differs from the above two described arrangements in that the chill C shown in FIG. 5 is constructed so that a mixture of cooling water and compressed air may be used for cooling the cast strand in the second passage portion 112 of the passage 1 through the chill.
- the chill is constructed in such a manner that the walls thereof define besides the central passage 1 therethrough a first enclosed space 12 and a second enclosed space 16 arranged in the manner as shown in FIG. 5.
- a plurality of longitudinal extending slots 7 extend along the second passage portion 1b of the central passage 1 through the chill, which slots 7 are transversely spaced from each other to define between themselves a plurality of ribs 8 as clearly shown and described in connection with FIGS. 1 and 2.
- a plurality of bores 13 provide communication between the enclosed space 12 into which compressed air is fed through inlet opening 12 as will be described later on in detail and the inner ends of the slots 7.
- Each of the bores 13 has a bore portion 13 extending closely adjacent and substantially parallel to the first passage portion 1b and a nearly vertical bore portion providing communication between the bore portion 13' and the space 12.
- the arrangement includes further, as in the previously described embodiments, a plate 2 of refractory material formed with a slot 3 through which molten metal is fed into the passage 1 of the chill.
- the molten metal passing through the first passage portion 1a is indirectly cooled by the cooling air passing through the bore portion 13 and in the second bore portion 1b the cooling air passing through the slots 7 will directly cool the metal passing therethrough.
- T 0 increase the cooling effect, cooling water is mixed with the air.
- the cooling water fed into the space 16 through inlet opening '16 passes through bores 17 which respectively communicate with the nearly vertical portions of the bores 13 into the latter.
- the compressed air passing through the bores 13 entrains the Water so that a mixture of water and air is produced.
- the addition of water increases the cooling action in the bores 13 especially due to the fact that the water flows in part along the walls forming the bores.
- the cooling action in the slots 7 along the second passage portion 1b is especially increased due to the fact that the water will emanate from the ends of the bore portions 13' into the slots 7 in substantially atomized form and be evaporated by contact with the hot metal strand so that its evaporating heat will withdraw heat from the strand. Accordingly, an increase of the amount of water in the mixture will preponderantly increase the indirect cooling of the metal strand by the cooled wall portion of the chill, whereas an increase of the amount of air in the mixture will preponderantly increase the direct cooling effect produced by the cooling medium passing through the slots 7 in direct contact with the surfaces of the metal strand.
- the amount of air and water in the mixture may be automatically controlled and for this purpose temperature sensing means 22 may be arranged closely adjacent to the outlet end of the passage so as to sense the temperature of the metal strand S emanating from the chill as shown in FIG. 6.
- the temperature sensing means 22 are connected in a known manner to a pair of valves 19 and 21 to open and close the latter to a greater and lesser degree in dependence on the temperatures sensed by the sensing means 22 so as to control flow of air through the conduits 18 into the space 12 and to control flow of cooling water through the conduit 20 into the space 16.
- a method for continuous casting of thin metal bands, plates and the like comprising the steps of feeding molten metal in a continuous stream and with a predetermined casting speed through a passage of a chill having a cross section substantially equal to the cross section of the band to be cast; forming a cooling fluid comprising a mixture of water and air; cooling the walls forming a first portion of the passage with said cooling fluid so as to indirectly cool the metal passing therethrough to thereby solidify outer surface portions of the metal and to form an at least partly solidified strand of metal; supporting said strand along longitudinally extending and transversely spaced surface portions thereof in a second portion of said passage; and feeding said cooling fluid under pressure and at a speed greater than said casting speed in longitudinal direction through said second portion of the passage in contact with the surface portions of the strand which are not supported so as to directly cool the strand.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEV28969A DE1283442B (de) | 1965-07-24 | 1965-07-24 | Verfahren zum waagerechten Stranggiessen von Aluminiumbaendern von weniger als 30 mm Dicke |
DEV0029888 | 1965-12-10 | ||
DEV29909A DE1293956B (de) | 1965-07-24 | 1965-12-11 | Verfahren zum Kuehlen von stranggegossenen duennen Baendern, Platten od. dgl. |
Publications (1)
Publication Number | Publication Date |
---|---|
US3463220A true US3463220A (en) | 1969-08-26 |
Family
ID=27213333
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US566589A Expired - Lifetime US3463220A (en) | 1965-07-24 | 1966-07-20 | Method for continuous casting of thin bands,plates |
Country Status (9)
Country | Link |
---|---|
US (1) | US3463220A (ja) |
BE (1) | BE683755A (ja) |
CH (1) | CH442631A (ja) |
DE (2) | DE1283442B (ja) |
GB (1) | GB1143475A (ja) |
LU (1) | LU51581A1 (ja) |
NL (1) | NL150028B (ja) |
NO (2) | NO118394B (ja) |
SE (1) | SE302023B (ja) |
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3616844A (en) * | 1970-02-24 | 1971-11-02 | Benteler Geb Paderwerk | Apparatus for continuous casting of metal ingots |
US3623536A (en) * | 1968-11-12 | 1971-11-30 | Vaw Ver Aluminium Werke Ag | Method and mold for continuously casting metallic elements |
US3687592A (en) * | 1969-11-24 | 1972-08-29 | Mitsubishi Gas Chemical Co | Apparatus for producing thermoplastic synthetic resin foamed products |
US3688834A (en) * | 1971-12-20 | 1972-09-05 | Frank E Wagstaff | Semi-continuous vertical casting mould for ingots |
US3726336A (en) * | 1968-11-12 | 1973-04-10 | Vaw Ver Aluminium Werke Ag | Continuous casting of metallic elements |
US3757849A (en) * | 1972-04-28 | 1973-09-11 | Koppers Co Inc | Strand cooling support system |
US3770046A (en) * | 1968-10-17 | 1973-11-06 | Olin Corp | Apparatus for cooling a stress sensitive continuous casting |
US3874439A (en) * | 1974-01-21 | 1975-04-01 | Korshunov Evgeny | Device for cooling the crystallizer in a plant for casting metal ingots with a periodic discharge thereof |
US3981351A (en) * | 1973-11-26 | 1976-09-21 | Metallurgie Hoboken-Overpelt | Mold for the continuous vertical casting of billets |
US3989093A (en) * | 1974-03-18 | 1976-11-02 | Vereinigte Osterreichische Eisen- Und Stahlwerke-Alpine Montan Aktiengesellschaft | Continuous casting plant for slabs |
US4150714A (en) * | 1977-07-28 | 1979-04-24 | General Motors Corporation | Lead casting seal |
FR2510008A1 (fr) * | 1981-07-24 | 1983-01-28 | Fives Cail Babcock | Atomiseur, notamment pour refroidir dans le sens de sa largeur un produit coule en continu |
US4441542A (en) * | 1981-06-10 | 1984-04-10 | Olin Corporation | Process for cooling and solidifying continuous or semi-continuously cast material |
US4474225A (en) * | 1982-05-24 | 1984-10-02 | Aluminum Company Of America | Method of direct chill casting |
CN104827006A (zh) * | 2015-04-22 | 2015-08-12 | 河南科技大学 | 一种大口径锻态铜管水平连铸连挤压设备及铜管生产工艺 |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4166495A (en) * | 1978-03-13 | 1979-09-04 | Aluminum Company Of America | Ingot casting method |
DE3141269C2 (de) * | 1981-10-17 | 1984-01-05 | Mannesmann AG, 4000 Düsseldorf | Kühlverfahren und Kühlvorrichtung für langgestrecktes heißes Metallgut, insbesondere für stranggegossene Knüppel- bzw. Vorblockstränge aus Stahl |
DE3346151C2 (de) * | 1983-05-26 | 1986-08-28 | Schweizerische Aluminium Ag, Chippis | Verfahren zum Kühlen eines Metallstranges beim Stranggießen |
US5325910A (en) * | 1985-09-20 | 1994-07-05 | Vereinigte Aluminium-Werke Aktiengesellschaft | Method and apparatus for continuous casting |
DE3533517A1 (de) * | 1985-09-20 | 1987-04-02 | Vaw Ver Aluminium Werke Ag | Verfahren und vorrichtung zum stranggiessen |
NL1010262C2 (nl) * | 1998-10-07 | 2000-04-10 | Hoogovens Corporate Services B | Werkwijze en inrichting voor het gieten van vloeibaar aluminium of aluminiumlegeringen tot blokken. |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2651821A (en) * | 1949-11-24 | 1953-09-15 | Ici Ltd | Continuous or semicontinuous casting of metals |
GB702719A (en) * | 1951-03-02 | 1954-01-20 | Rossi Irving | Improvements in or relating to continuous casting of metal |
US2782473A (en) * | 1953-03-20 | 1957-02-26 | Joseph B Brennan | Continuous casting method and apparatus |
DE1055763B (de) * | 1954-12-29 | 1959-04-23 | Ver Deutsche Metallwerke Ag | Vorrichtung zum Stranggiessen von Schwermetallen oder Schwermetallegierungen |
US2946100A (en) * | 1956-08-27 | 1960-07-26 | American Smelting Refining | Block graphite mold for continuous casting |
US3098269A (en) * | 1960-05-09 | 1963-07-23 | American Smelting Refining | Mold for continuous casting |
US3358743A (en) * | 1964-10-08 | 1967-12-19 | Bunker Ramo | Continuous casting system |
-
1965
- 1965-07-24 DE DEV28969A patent/DE1283442B/de active Pending
- 1965-12-11 DE DEV29909A patent/DE1293956B/de active Pending
-
1966
- 1966-06-16 CH CH871166A patent/CH442631A/de unknown
- 1966-07-06 NO NO163822A patent/NO118394B/no unknown
- 1966-07-07 BE BE683755D patent/BE683755A/xx not_active IP Right Cessation
- 1966-07-13 NL NL666609863A patent/NL150028B/xx not_active IP Right Cessation
- 1966-07-18 LU LU51581A patent/LU51581A1/xx unknown
- 1966-07-20 US US566589A patent/US3463220A/en not_active Expired - Lifetime
- 1966-07-21 SE SE9992/66A patent/SE302023B/xx unknown
- 1966-07-22 GB GB33201/66A patent/GB1143475A/en not_active Expired
-
1968
- 1968-08-21 NO NO03285/68A patent/NO126724B/no unknown
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2651821A (en) * | 1949-11-24 | 1953-09-15 | Ici Ltd | Continuous or semicontinuous casting of metals |
GB702719A (en) * | 1951-03-02 | 1954-01-20 | Rossi Irving | Improvements in or relating to continuous casting of metal |
US2782473A (en) * | 1953-03-20 | 1957-02-26 | Joseph B Brennan | Continuous casting method and apparatus |
DE1055763B (de) * | 1954-12-29 | 1959-04-23 | Ver Deutsche Metallwerke Ag | Vorrichtung zum Stranggiessen von Schwermetallen oder Schwermetallegierungen |
US2946100A (en) * | 1956-08-27 | 1960-07-26 | American Smelting Refining | Block graphite mold for continuous casting |
US3098269A (en) * | 1960-05-09 | 1963-07-23 | American Smelting Refining | Mold for continuous casting |
US3358743A (en) * | 1964-10-08 | 1967-12-19 | Bunker Ramo | Continuous casting system |
Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3770046A (en) * | 1968-10-17 | 1973-11-06 | Olin Corp | Apparatus for cooling a stress sensitive continuous casting |
US3623536A (en) * | 1968-11-12 | 1971-11-30 | Vaw Ver Aluminium Werke Ag | Method and mold for continuously casting metallic elements |
US3726336A (en) * | 1968-11-12 | 1973-04-10 | Vaw Ver Aluminium Werke Ag | Continuous casting of metallic elements |
US3687592A (en) * | 1969-11-24 | 1972-08-29 | Mitsubishi Gas Chemical Co | Apparatus for producing thermoplastic synthetic resin foamed products |
US3616844A (en) * | 1970-02-24 | 1971-11-02 | Benteler Geb Paderwerk | Apparatus for continuous casting of metal ingots |
US3688834A (en) * | 1971-12-20 | 1972-09-05 | Frank E Wagstaff | Semi-continuous vertical casting mould for ingots |
US3757849A (en) * | 1972-04-28 | 1973-09-11 | Koppers Co Inc | Strand cooling support system |
US3981351A (en) * | 1973-11-26 | 1976-09-21 | Metallurgie Hoboken-Overpelt | Mold for the continuous vertical casting of billets |
US3874439A (en) * | 1974-01-21 | 1975-04-01 | Korshunov Evgeny | Device for cooling the crystallizer in a plant for casting metal ingots with a periodic discharge thereof |
US3989093A (en) * | 1974-03-18 | 1976-11-02 | Vereinigte Osterreichische Eisen- Und Stahlwerke-Alpine Montan Aktiengesellschaft | Continuous casting plant for slabs |
US4150714A (en) * | 1977-07-28 | 1979-04-24 | General Motors Corporation | Lead casting seal |
US4441542A (en) * | 1981-06-10 | 1984-04-10 | Olin Corporation | Process for cooling and solidifying continuous or semi-continuously cast material |
FR2510008A1 (fr) * | 1981-07-24 | 1983-01-28 | Fives Cail Babcock | Atomiseur, notamment pour refroidir dans le sens de sa largeur un produit coule en continu |
US4474225A (en) * | 1982-05-24 | 1984-10-02 | Aluminum Company Of America | Method of direct chill casting |
CN104827006A (zh) * | 2015-04-22 | 2015-08-12 | 河南科技大学 | 一种大口径锻态铜管水平连铸连挤压设备及铜管生产工艺 |
CN104827006B (zh) * | 2015-04-22 | 2017-01-11 | 河南科技大学 | 一种大口径锻态铜管水平连铸连挤压设备及铜管生产工艺 |
Also Published As
Publication number | Publication date |
---|---|
GB1143475A (en) | 1969-02-19 |
DE1283442B (de) | 1968-11-21 |
BE683755A (ja) | 1966-12-16 |
NL6609863A (ja) | 1967-01-25 |
SE302023B (ja) | 1968-07-01 |
NL150028B (nl) | 1976-07-15 |
DE1293956B (de) | 1969-04-30 |
CH442631A (de) | 1967-08-31 |
NO126724B (ja) | 1973-03-19 |
LU51581A1 (ja) | 1966-09-19 |
NO118394B (ja) | 1969-12-22 |
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