NO126724B - - Google Patents
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- Publication number
- NO126724B NO126724B NO03285/68A NO328568A NO126724B NO 126724 B NO126724 B NO 126724B NO 03285/68 A NO03285/68 A NO 03285/68A NO 328568 A NO328568 A NO 328568A NO 126724 B NO126724 B NO 126724B
- Authority
- NO
- Norway
- Prior art keywords
- mold
- water
- cooling
- bore
- air
- Prior art date
Links
- 238000001816 cooling Methods 0.000 claims description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 239000000203 mixture Substances 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 7
- 238000007493 shaping process Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 4
- 238000005266 casting Methods 0.000 description 3
- 239000003595 mist Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910001338 liquidmetal Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 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
- B22D11/14—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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Description
Fremgangsmåte til avkjøling av strengstøpte tynne Method for cooling strand cast thin
bånd, plater og lignende. tapes, plates and the like.
Oppfinnelsen vedrører en fremgangsmåte til avkjøling The invention relates to a method for cooling
av strengstøpte tynne bånd, plater og lignende, spesielt på mindre enn 30 mm tykkelse, med en vann-luft-blanding som direkte avkjøler den fra en kokille uttredende streng mellom steg som er koplet etter kokillen. of strand-cast thin strips, plates and the like, especially of less than 30 mm thickness, with a water-air mixture that directly cools it from a die exiting strand between stages connected after the die.
Ved kjente kjølefremgangsmåter av strengstøpte barrer hvor det ikke er anordnet en strengføring ved hjelp av steg, av-kjøles strengen under kokillen ved samtidig påføring av vann og pressluft i form av en tåke. Det hører også med til teknikkens stand direkte å avkjøle en gjennom steg ført- metallstreng inne i kokillen. In known cooling methods of strand-cast ingots where strand guidance by means of steps is not arranged, the strand is cooled under the mold by the simultaneous application of water and compressed air in the form of a mist. It is also part of the state of the art to directly cool a metal string passed through a step inside the mold.
Disse kjølemåter- er ikke alltid tilfredsstillende i praksisj spesielt ikke når det dreier seg om rissfølsomme legeringer. Dessuten har det vist seg at ved strengstøping av tynne bånd, plater og lignende, som ved uttreden av kokillen føres gjennom etterkoblede steg, er det nødvendig å la den direkte avkjøling allerede starte inne i kokillen mellom.stegene og å utforme hele kjølevirkningen mest mulig intens. These cooling methods are not always satisfactory in practice, especially when it comes to crack-sensitive alloys. In addition, it has been shown that when string casting thin strips, plates and the like, which on exiting the mold are passed through subsequent steps, it is necessary to let the direct cooling already start inside the mold between the steps and to design the entire cooling effect as intensely as possible .
I tysk utlegningsskrift nr. 1.055.763 er det omtalt en type stegkokiller, men det foregår her ingen frembringelse av den avkjølende vann-luftblanding inne i selve kokillen. Det samme gjelder også for gjenstanden ifølge fransk patent nr. 1.181.997, hvor det heller ikke frembringes noen vann-luftblanding inne i selve kokillen, men frembringes ejektoraktig utenfor kokillen. In German specification no. 1,055,763, a type of step mold is described, but there is no production of the cooling water-air mixture inside the mold itself. The same also applies to the object according to French patent no. 1,181,997, where no water-air mixture is produced inside the mold itself, but is produced ejector-like outside the mold.
Oppfinnelsen vedrører altså en fremgangsmåte £il av-kjøling av strengstøpte tynne bånd, plater eller lignende, spesielt på mindre enn 30 mm tykkelse med en ejektoraktig fremstilt vann-luftblanding, som først indirekte og deretter direkte avkjøler den fra en kokille uttredende streng mellom steg som er koblet etter kokillen, idet fremgangsmåten er karakterisert ved at vann-luftblandingen frembringes inne i den formgivende del av kokillen og før den samlede uttreden til den direkte avkjøling. The invention therefore relates to a method for cooling strip-cast thin strips, plates or the like, especially of less than 30 mm thickness with an ejector-like produced water-air mixture, which first indirectly and then directly cools the strip emerging from a mold between steps which is connected after the mold, the method being characterized by the water-air mixture being produced inside the shaping part of the mold and before the overall exit to the direct cooling.
Forsøk har vist at på denne måte lar risstendensen i materialet seg betraktelig nedsette. Det lykkes å strengstøpe tynne bånd, plater og lignende uten forstyrrelser. Dessuten lykkes det å variere kjøleintensiteten i større omfang enn ved kjøling med et flytende kjølemiddel. Experiments have shown that in this way the tendency to crack in the material can be considerably reduced. It succeeds in string casting thin strips, plates and the like without disturbances. Furthermore, it is possible to vary the cooling intensity to a greater extent than when cooling with a liquid coolant.
Ved en utførelsesform ifølge oppfinnelsen styres sump-dybden og/eller den støpte strengs temperatur ved variering av luft-og/eller vannmengdene. Herved er det mulig å styre avkjølingshastig-heten i den indirekte avkjølte del av kokillen ved å variere vannmengden og avkjølingshastigheten mellom stegene ved å variere luftmengden. Hensiktsmessig anvendes da en temperaturføler på den uttredende streng for automatisk styring. In an embodiment according to the invention, the depth of the sump and/or the temperature of the cast string is controlled by varying the amounts of air and/or water. Hereby, it is possible to control the cooling rate in the indirectly cooled part of the mold by varying the amount of water and the cooling rate between stages by varying the amount of air. Appropriately, a temperature sensor is then used on the outgoing string for automatic control.
En spesielt egnet kokille til utførelse av fremgangs måten ifølge oppfinnelsen er karakterisert ved en fra lufttilførselen til enden av den formgivende kokilledel førende boring, hvori det munner ut en boring fra vanntilførsel. Herved kan den første boring munne i en ytterligere boring, som forløper i umiddelbar nærhet av den formgivende flate. På denne måte muliggjøres spesielt godt ut- A particularly suitable mold for carrying out the method according to the invention is characterized by a bore leading from the air supply to the end of the forming mold part, into which a bore from the water supply opens. Hereby, the first bore can open into a further bore, which runs in the immediate vicinity of the shaping surface. In this way, particularly good out-
nyttelsen av vann-luftblandingen til indirekte avkjøling. the use of the water-air mixture for indirect cooling.
Fig. 1 viser i perspektivisk gjengivelse et innblikk i kokillens indre fra strenguttredelsessiden. Fig. 2 viser kokillen i loddrett lengdesnitt, idet snittet er lagt gjennom en sliss som befinner seg mellom stegene. Fig. 1 shows a perspective view of the interior of the mold from the string exit side. Fig. 2 shows the mold in a vertical longitudinal section, the section being laid through a slot located between the steps.
Det formgivende indre rom 1 av kokillen med i dette tilfelle firkantet tverrsnitt til støpning av et bånd, er ved en side lukket ved hjelp av en plate .2 av ildfast, varmeisolerende materiale. Denne plate har en sliss 3 hvorigjennom det flytende metall innføres i kokillens indre rom 1. Kjøleluften tilføres til kokillen gjennom tilførselskanaler 4. Fra disse kanaler videre-føres den gjennom en rekke boringer 5. Disse boringer er ført i vinkel, således at et stykke av dem løper langs arbeidsflaten av kokillens indre rom 1. Luften som føres igjennom, kjøler på denne måte arbeidsflaten. Fra boringene 5 trer luften inn i mellomrommene 7 mellom stegene 8 og avkjøler her direkte båndet som trer ut. For å øke kjølevirkningen tilblandes vann til luften. Dette vann til-føres til kokillen gjennom tilførselskanaler 9. Fra kanalene 9 trykkes det gjennom boringer 10 inn i boringene 5. Luften som strøm-mer langs boringene 5 river med vannet, således at det oppstår en blanding av luft og vann. Vanntilsetningen forsterker kjølevirk-ningen i boringene 6, spesielt ved at vannet delvis løper langs boringenes vegger. Kjølevirkningen i mellomrommene 7 mellom stegene 8 økes spesielt ved at vannet trer ut fra boringene 5 som forstøv-ningståke og ved sin fordampningsvarme fjerner varme fra den ut-, tredende streng. Følgelig øker en økning av vannmengden spesielt den indirekte avkjøling av strengen over arbeidsflaten i kokille-rommet 1, en økning av luftmengden, spesielt den direkte avkjøling i mellomrommene 7- The forming inner space 1 of the mold, with in this case a square cross-section for casting a band, is closed on one side by means of a plate .2 of refractory, heat-insulating material. This plate has a slot 3 through which the liquid metal is introduced into the inner space of the mold 1. The cooling air is supplied to the mold through supply ducts 4. From these ducts it continues through a series of bores 5. These bores are led at an angle, so that a piece of them run along the working surface of the mold's inner space 1. The air that is passed through cools the working surface in this way. From the bores 5, the air penetrates into the spaces 7 between the steps 8 and here directly cools the strip that emerges. To increase the cooling effect, water is mixed with the air. This water is supplied to the mold through supply channels 9. From the channels 9 it is pressed through bores 10 into the bores 5. The air that flows along the bores 5 tears with the water, so that a mixture of air and water occurs. The addition of water reinforces the cooling effect in the bores 6, especially in that the water partly runs along the walls of the bores. The cooling effect in the spaces 7 between the steps 8 is particularly increased by the fact that the water emerges from the bores 5 as an atomizing mist and by its heat of evaporation removes heat from the emerging string. Consequently, an increase in the amount of water in particular increases the indirect cooling of the strand above the working surface in the mold space 1, an increase in the amount of air, in particular the direct cooling in the spaces 7-
Claims (2)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEV28969A DE1283442B (en) | 1965-07-24 | 1965-07-24 | Process for the horizontal continuous casting of aluminum strips less than 30 mm thick |
DEV0029888 | 1965-12-10 | ||
DEV29909A DE1293956B (en) | 1965-07-24 | 1965-12-11 | Method for cooling continuously cast thin strips, plates or the like. |
Publications (1)
Publication Number | Publication Date |
---|---|
NO126724B true NO126724B (en) | 1973-03-19 |
Family
ID=27213333
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO163822A NO118394B (en) | 1965-07-24 | 1966-07-06 | |
NO03285/68A NO126724B (en) | 1965-07-24 | 1968-08-21 |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO163822A NO118394B (en) | 1965-07-24 | 1966-07-06 |
Country Status (9)
Country | Link |
---|---|
US (1) | US3463220A (en) |
BE (1) | BE683755A (en) |
CH (1) | CH442631A (en) |
DE (2) | DE1283442B (en) |
GB (1) | GB1143475A (en) |
LU (1) | LU51581A1 (en) |
NL (1) | NL150028B (en) |
NO (2) | NO118394B (en) |
SE (1) | SE302023B (en) |
Families Citing this family (21)
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 |
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 |
CH501445A (en) * | 1968-11-12 | 1971-01-15 | Vaw Ver Aluminium Werke Ag | Method and device for the fully continuous casting of metallic strands of thin cross-section, such as strips, wires or the like |
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 |
LU68861A1 (en) * | 1973-11-26 | 1975-08-20 | ||
GB1418262A (en) * | 1974-01-21 | 1975-12-17 | Ural Politekhn I Im Sm Kirova | Apparatus comprising a mould for continuous casting of metal and means for cooling the mould |
SE409961B (en) * | 1974-03-18 | 1979-09-17 | Voest Ag | STRING MOLDING PLANT FOR THE ROUGH PLATE |
US4150714A (en) * | 1977-07-28 | 1979-04-24 | General Motors Corporation | Lead casting seal |
US4166495A (en) * | 1978-03-13 | 1979-09-04 | Aluminum Company Of America | Ingot casting method |
US4441542A (en) * | 1981-06-10 | 1984-04-10 | Olin Corporation | Process for cooling and solidifying continuous or semi-continuously cast material |
FR2510008A1 (en) * | 1981-07-24 | 1983-01-28 | Fives Cail Babcock | Atomiser for cooling wide side of continuously cast slab - where pressurised streams of air and water are fed through sets of nozzles to form sprays of fine mist |
DE3141269C2 (en) * | 1981-10-17 | 1984-01-05 | Mannesmann AG, 4000 Düsseldorf | Cooling method and cooling device for elongated hot metal goods, in particular for continuously cast billets or bloom strands made of steel |
US4474225A (en) * | 1982-05-24 | 1984-10-02 | Aluminum Company Of America | Method of direct chill casting |
DE3346151C2 (en) * | 1983-05-26 | 1986-08-28 | Schweizerische Aluminium Ag, Chippis | Process for cooling a metal strand during continuous casting |
US5325910A (en) * | 1985-09-20 | 1994-07-05 | Vereinigte Aluminium-Werke Aktiengesellschaft | Method and apparatus for continuous casting |
DE3533517A1 (en) * | 1985-09-20 | 1987-04-02 | Vaw Ver Aluminium Werke Ag | METHOD AND DEVICE FOR CONTINUOUS CASTING |
NL1010262C2 (en) * | 1998-10-07 | 2000-04-10 | Hoogovens Corporate Services B | Chill casting of aluminum ingots, comprises spraying the ingots with drops of coolant in order to achieve gentle cooling |
CN104827006B (en) * | 2015-04-22 | 2017-01-11 | 河南科技大学 | Horizontal continuous-casting continuous-extruding equipment for large-diameter forging copper pipe and production technology of copper pipe |
Family Cites Families (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 (en) * | 1954-12-29 | 1959-04-23 | Ver Deutsche Metallwerke Ag | Device for the continuous casting of heavy metals or heavy metal alloys |
BE560271A (en) * | 1956-08-27 | |||
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/en active Pending
- 1965-12-11 DE DEV29909A patent/DE1293956B/en active Pending
-
1966
- 1966-06-16 CH CH871166A patent/CH442631A/en 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/en 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
Also Published As
Publication number | Publication date |
---|---|
US3463220A (en) | 1969-08-26 |
NL150028B (en) | 1976-07-15 |
NO118394B (en) | 1969-12-22 |
DE1293956B (en) | 1969-04-30 |
GB1143475A (en) | 1969-02-19 |
LU51581A1 (en) | 1966-09-19 |
CH442631A (en) | 1967-08-31 |
NL6609863A (en) | 1967-01-25 |
DE1283442B (en) | 1968-11-21 |
SE302023B (en) | 1968-07-01 |
BE683755A (en) | 1966-12-16 |
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