US3519062A - Apparatus for producing strip metal by continuous casting - Google Patents

Apparatus for producing strip metal by continuous casting Download PDF

Info

Publication number
US3519062A
US3519062A US672583A US3519062DA US3519062A US 3519062 A US3519062 A US 3519062A US 672583 A US672583 A US 672583A US 3519062D A US3519062D A US 3519062DA US 3519062 A US3519062 A US 3519062A
Authority
US
United States
Prior art keywords
strip
mold
cooling
heating
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.)
Expired - Lifetime
Application number
US672583A
Other languages
English (en)
Inventor
Alfred J Wertli
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of US3519062A publication Critical patent/US3519062A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • B22D11/04—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

Definitions

  • This invention relates to an apparatus and method for producing strip metal by continuous casting. More particularly, this invention relates to an apparatus and method wherein a molten metal or alloy is cooled into a solidified strip during passage through a mold.
  • the furnaces in which molten metals have been contained have been provided with molds for passage of the molten metal out of the furnace.
  • These molds have generally been surrounded by cooling devices for the cooling of the molten metal passing through the mold in order to form a solidified metal strip.
  • these cooling devices have been formed in two parts, one of which extended across the upper surface of the mold while the other extended across the lower surface.
  • Each part of such cooling devices have been provided with a separate flow of cooling medium such that each flow has cooled the entire width of the cast strip.
  • the strips which have been produced by these heretofore devices and methods have had parabolic shaped lines formed on the upper and lower surfaces by solidication phenomena.
  • such strips Upon examination, such strips have been found to possess a heterogeneous structure in front of and behind each parabolic line.
  • the lines at the edges of the strip have had a considerably smaller spacing from one another than at the center of the strip such that the edges have had a practically continuous heterogeneous structure. This structure is unsuitable for further working, particularly by cold forming.
  • cracks and ssures have frequently been formed in the strip edges.
  • the invention provides an apparatus and method by which a continuously cast strip is heated at the edges along at least part of the length of a cooling device forming the strip. This allows the solidication processes in the molten metal to proceed more uniformly so as to produce a homogeneous structure.
  • the strips obtained by the invention have good metallurgical properties. Instead of parabolic lines, the strips possess substantially straight lines extending at right angles to the direction of movement of the strip which lines are considerably shorter than the heretofore obtained parabolic lines.
  • the method of the invention is advantageously applicable to strips with a ratio of width to thickness of 6:1 and considerably extends the possibilities of manufacturing strips.
  • strips can be manufactured by the method of the invention with width to thickness ratios of up to 70:1.
  • the apparatus includes a cooling device having two plate-like hollow bodies each of lwhich extends across one of the two broad sides of the produced strip and a prismatic heating member arranged in parallel relation to each of the two nar row sides of the strip for heating these narrow sides.
  • FIG. 1 diagrammatically illustrates a plan view of a length of continuously cast strip metal with parabolic solidiication lines to the left half as formed by prior methods and substantially straight solidication lines to the right half as formed by the method of the invention;
  • FIG. 2 illustrates a plan View of an apparatus of the invention
  • FIG. 3 illustrates a view taken on line A-B of FIG. 2;
  • FIG. 4 illustrates a fragmentary cross-sectional view of a modified apparatus of the invention
  • FIG. 5 illustrates a plan view similar to FIG. 2 of another rnodiiied apparatus of the invention.
  • FIG. 6 illustrates a cross-sectional view taken on line A-B of FIG. 5.
  • the cooling device consists of an upper part 1 and a lower part 2 which are in the form of platelike hollow bodies and which are held together by bolts for example where indicated by broken lines 3.
  • a two part mold 4 of graphite is clamped between upper part 1 and lower part 2 to enclose a hollow space, the cross-section of which corresponds to that of the strip 5 to be cast.
  • the mold 4, at the end which protrudes from the cooling device 1, 2 (shown at the top of FIG. 2) is pressed against the wall of a furnace (not shown) containing the molten metal.
  • the molten metal flows into the cavity of the mold 4 in which, under the influence of the cooling device 1, 2, it gradually solidifes into a strip 5 which is then moved forward continuously or intermittently in the direction indicated by arrow 6.
  • the hollow space 8 of the upper part 1 of the cooling device has a flow of cooling medium passed therethrough.
  • the ow enters at the aperture 9 ⁇ and leaves at the aperture 9.
  • the entry and exit of the flow of cooling medium in the lower part 2 is similarly arranged.
  • the quantity of cooling medium flowing through hollow ⁇ space 8 can be regulated by known means not ⁇ further described.
  • Prismatic heating members 11 are provided between the upper part 1 and the lower part 2, on each side of the mold 4 toextend over part of the length of the cooling device 1, 2.
  • the two heating members 11 each have two passages 13 therein through which a heating medium, e.g. oil at a suitable temperature, can be passed, the heating medium flowing in, for example, through the upper passage 13 and out through the lower passage 13.
  • the heating members 11 are mounted so as to be longitudinally adjustable.
  • each heating member has a lug 14 which has a threaded hole therethrough.
  • a lug 15 is provided which has a hole of corresponding size in alignment to the threaded hole of lug 14.
  • a bolt 16 passes through the hole in lug 15 into the threaded hole of lug 14 and by this means the heating members can be' moved parallel to the strip 5.
  • Heat insulating layers 22 are provided between the heating members 11 and the 3 parts 1 and 2 which if necessary, and as shown in FIG. 3 can slightly overlap the edges of the mold 4.
  • the ilow of a heated medium through the heating members 11 during a casting operation influences the overall cooling of the strip across the whole width of the strip so as to avoid an excessively rapid cooling of the edges of the strip. Thus, a more uniform withdrawal of heat across the width to the strip is obtained.
  • the strips produced by the above apparatus and method have no parabolic shaped solidication lines as indicated in the left half of the illustrated strip but rather possess substantially straight lines as indicated in the right half of the illustrated strip extending approximately at right angles to the direction of movement of the strip. Further, the straight lines have a more uniform spacing from each other than the parabolic shaped lines which have a considerably closer spacing lz at the edges than the spacing H at the center of the strip.
  • a modified mold consists of a top plate 17, a bottom plate 18 and two side members 19 of T shape (only one of which is shown for simplicity).
  • the leg of each T shaped member extends between the plates 17 and 18.
  • the four parts of the mold can be made of graphite.
  • the members 19 are each formed with a bore 20 extending therethrough to receive an electrical heating element 21 for allowing the members 19 to act as heating members.
  • the heating elements 21 can be displaced in the bore 20 so that the edge portion of a strip 5 to be heated can be varied.
  • the upper part 1 and the lower part 2 of the cooling device are each divided into three zones, a, b, c in such a manner across the width of the strip 5 that the zones a and c lie above and beneath the strip edges while the Zones b extend above and beneath the center of the strip.
  • Each of the zones consists of a cooling chamber 8 which extends-approximately in U-shape-in the longitudinal direction of the strip.
  • bores 9 and 9 for the feed and discharge of cooling medium are provided, the feed and discharge of the cooling medium being indicated by the arrows 10.
  • this cooling device a differential cooling action across the width of the strip is achieved, for example, by adjusting the cooling medium ilow in the three zones differently for which known means not further described can be provided.
  • the strip edges over at least a part of the length of the cooling device are heated for which purpose in the left half of FIG. 6 heating member 11 of FIG. 3 is provided while in the right half heating member 19 of FIG. 4 is used.
  • the heat insulating layers 22 can slightly overlap the edges of the mold 4.
  • the air gaps 23 between the heating member 19 and cooling device 1, 2 can also continue between the mold and the cooling device or can be substituted by heat insulating layers.
  • the invention provides an apparatus and method which is capable of producing metal strips from molten metal which have a uniform structure and good metallurgical properties, especially for cold working.
  • An apparatus for solidifying molten metal into a continuously cast strip comprising a mold having a passage therein for the passage of molten metal therethrough,
  • cooling means for cooling the molten metal into a cast strip within said mold, said cooling means having a pair of plate-like hollow bodies disposed about said mold to extend across opposite broad surfaces of the cast strip, and
  • heating means extending parallel to the narrow surfaces of the cast strip within said mold for heating the formed strip about the opposed narrow surfaces to effect a uniform solidication of said strip into a homogeneous structure, said heating means including a pair of prismatic heating members, each said member being disposed adjacent one of the narrow edge surfaces of the cast strip and including a bore therein for conducting a ow of heating medium therethrough.
  • each heating member abuts against a narrow side of said mold.
  • each heating member is longitudinally movably mounted with respect to said mold.
  • An apparatus for solidifying molten metal into a continuously cast strip comprising a mold having a passage therein -for the passage of molten metal therethrough,
  • cooling means for cooling the molten metal into a cast strip within said mold, said cooling means having a pair of plate-like hollow bodies disposed about said mold to extend across opposite broad surfaces of the cast strip, and
  • heating means extending parallel to the narrow surfaces of the cast strip within said mold for heating the formed strip about the opposed narrow surfaces to effect a uniform solidication of said strip into a homogeneous structure, said heating means including a pair of prismatic heating members, each said member being disposed between said hollow bodies adjacent one of the narrow edge surfaces of the cast strip and including an electrical heating element therein.
US672583A 1966-10-06 1967-10-03 Apparatus for producing strip metal by continuous casting Expired - Lifetime US3519062A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1440466A CH439600A (de) 1966-10-06 1966-10-06 Verfahren zum Stranggiessen eines Bandes und Einrichtung zum Durchführen des Verfahrens

Publications (1)

Publication Number Publication Date
US3519062A true US3519062A (en) 1970-07-07

Family

ID=4400558

Family Applications (1)

Application Number Title Priority Date Filing Date
US672583A Expired - Lifetime US3519062A (en) 1966-10-06 1967-10-03 Apparatus for producing strip metal by continuous casting

Country Status (10)

Country Link
US (1) US3519062A (xx)
AT (1) AT271769B (xx)
BE (1) BE704698A (xx)
CH (1) CH439600A (xx)
DE (1) DE1583726B1 (xx)
DK (1) DK115000B (xx)
ES (1) ES345891A1 (xx)
GB (1) GB1197937A (xx)
NL (1) NL6712928A (xx)
SE (1) SE320464B (xx)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3580328A (en) * 1969-05-12 1971-05-25 Gen Motors Corp Mold for improved control of heat transfer in casting plate or strip products
US3797555A (en) * 1971-09-30 1974-03-19 Noranda Mines Ltd Method for continuous casting of metal strips
US3916985A (en) * 1971-09-30 1975-11-04 Noranda Mines Ltd Apparatus for continuous casting of metal strips
US4706734A (en) * 1985-02-21 1987-11-17 Gus Sevastakis Continuous casting of strips or bars
US4724897A (en) * 1986-03-24 1988-02-16 Press Technology Corporation Method of and apparatus for horizontal continuous casting
US5535812A (en) * 1995-01-06 1996-07-16 Singleton Technology, Inc. Method of and apparatus for continuous casting of metal
WO2003055622A1 (en) * 2001-12-28 2003-07-10 Outokumpu Oyj A mould for continuous casting of metal strips

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2728993C2 (de) * 1977-06-28 1984-06-28 Fried. Krupp Gmbh, 4300 Essen Stranggießkokille

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2672665A (en) * 1950-03-13 1954-03-23 Kaiser Aluminium Chem Corp Casting metal
FR1101283A (fr) * 1954-03-19 1955-10-04 Pechiney Coulée des métaux
US2782473A (en) * 1953-03-20 1957-02-26 Joseph B Brennan Continuous casting method and apparatus
US3085303A (en) * 1959-12-02 1963-04-16 Steigerwald Karl Heinz Method and means for continuous casting employing compartmented molds
US3206809A (en) * 1961-08-25 1965-09-21 Alusuisse Continuous casting of plates and strips from non-ferrous metals
US3292216A (en) * 1963-06-25 1966-12-20 Concast Ag Adjustable mold for continuous casting installation
US3450188A (en) * 1966-08-23 1969-06-17 Enn Vallak Continuous casting method and arrangement

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU29617A1 (xx) * 1947-11-06
US2767448A (en) * 1952-06-27 1956-10-23 Babcock & Wilcox Co Continuous casting mold

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2672665A (en) * 1950-03-13 1954-03-23 Kaiser Aluminium Chem Corp Casting metal
US2782473A (en) * 1953-03-20 1957-02-26 Joseph B Brennan Continuous casting method and apparatus
FR1101283A (fr) * 1954-03-19 1955-10-04 Pechiney Coulée des métaux
US3085303A (en) * 1959-12-02 1963-04-16 Steigerwald Karl Heinz Method and means for continuous casting employing compartmented molds
US3206809A (en) * 1961-08-25 1965-09-21 Alusuisse Continuous casting of plates and strips from non-ferrous metals
US3292216A (en) * 1963-06-25 1966-12-20 Concast Ag Adjustable mold for continuous casting installation
US3450188A (en) * 1966-08-23 1969-06-17 Enn Vallak Continuous casting method and arrangement

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3580328A (en) * 1969-05-12 1971-05-25 Gen Motors Corp Mold for improved control of heat transfer in casting plate or strip products
US3797555A (en) * 1971-09-30 1974-03-19 Noranda Mines Ltd Method for continuous casting of metal strips
US3916985A (en) * 1971-09-30 1975-11-04 Noranda Mines Ltd Apparatus for continuous casting of metal strips
US4706734A (en) * 1985-02-21 1987-11-17 Gus Sevastakis Continuous casting of strips or bars
US4724897A (en) * 1986-03-24 1988-02-16 Press Technology Corporation Method of and apparatus for horizontal continuous casting
US5535812A (en) * 1995-01-06 1996-07-16 Singleton Technology, Inc. Method of and apparatus for continuous casting of metal
WO2003055622A1 (en) * 2001-12-28 2003-07-10 Outokumpu Oyj A mould for continuous casting of metal strips
US7234508B2 (en) 2001-12-28 2007-06-26 Luvata Oy Mould for continuous casting of metal strips

Also Published As

Publication number Publication date
BE704698A (xx) 1968-04-04
SE320464B (xx) 1970-02-09
CH439600A (de) 1967-07-15
DE1583726B1 (de) 1971-01-14
ES345891A1 (es) 1968-12-01
DK115000B (da) 1969-08-25
NL6712928A (xx) 1968-04-08
GB1197937A (en) 1970-07-08
AT271769B (de) 1969-06-10

Similar Documents

Publication Publication Date Title
US3511305A (en) Method for cooling a continuous casting
DE3400220C2 (xx)
GB2037634B (en) Casting thixotropic material
EP0268910A2 (de) Kokille zum Stranggiessen von Stahlband
US3530926A (en) Apparatus and method for continuous casting of metals
US3519062A (en) Apparatus for producing strip metal by continuous casting
ES357874A1 (es) Maquina con coquilla de orugas para la colada de bandas de metales no ferricos, en particular de aluminio y aleaciones de aluminio.
US2770022A (en) Method of continuously casting molten metal
US2956320A (en) Casting of metal
EP0931609B1 (de) Flüssigkeitsgekühlte Kokille
US3580328A (en) Mold for improved control of heat transfer in casting plate or strip products
DE824546C (de) Verfahrn und Anlage zum kontinuierlichen Giessen von Metallplatten
US3625498A (en) Cooling apparatus for continuous casting plants
US2763044A (en) Method of continuously casting strip metal
DE2042546A1 (en) Reduction of cooling of continuous castings - in secondary cooling zo
DE60219202T2 (de) Formwerkzeug zum stranggiessen von metallbändern und kühleinrichtung
US3627027A (en) Casting mold assembly for casting continuous strip
US3279002A (en) Mold shut-off arrangement
DE2615228A1 (de) Stranggussform
DE10148150B4 (de) Flüssigkeitsgekühlte Stranggießkokille
CA1229716A (en) Mold link of a caterpillar type mold
JPH0531505B2 (xx)
KR19990055365A (ko) 전자기장을 이용한 연속주조용 몰드
JPH01202347A (ja) 薄鋳片の連続鋳造機
AT138036B (de) Kokille mit langsamer Wärmeableitung.