US3412784A - A mold for continuous casting of flat bars having an oval graphical insert surrounded by a cooled rectangular jacket - Google Patents

A mold for continuous casting of flat bars having an oval graphical insert surrounded by a cooled rectangular jacket Download PDF

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Publication number
US3412784A
US3412784A US521649A US52164966A US3412784A US 3412784 A US3412784 A US 3412784A US 521649 A US521649 A US 521649A US 52164966 A US52164966 A US 52164966A US 3412784 A US3412784 A US 3412784A
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US
United States
Prior art keywords
mold
jacket
graphite insert
insert
cooled
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
US521649A
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English (en)
Inventor
Wieland Hans
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.)
Wieland Werke AG
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Wieland Werke AG
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Filing date
Publication date
Application filed by Wieland Werke AG filed Critical Wieland Werke AG
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    • 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
    • B22D11/059—Mould materials or platings
    • 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
    • B22D11/041—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds for vertical 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

Definitions

  • the present invention relates to a mold for continuously casting fiat bars or plates of metal, especially copper.
  • the principal objects of the present invention are to provide a mold which is designed so as to eliminate the above-mentioned disadvantages and is provided with a graphite insert with thick walls, and which permits bars or plates of metal, especially copper, to be cast at a high rate of speed and to be uniformly cooled along their entire cross-sectional area without thereby increasing the length of time of the casting operation and without impairing the properties and surface quality of the cast metal.
  • the invention consists in the novel design and construction of the graphite insert, of the cooled metallic jacket surrounding this insert, and of the outer cooling jacket of the mold, and in the particular arrangement of these elements and their particular combination with each other.
  • the graphite insert which defines and forms an oblong, substantially rectangular mold cavity is provided with an outer peripheral surface of an oval shape on which the cooled metallic jacket is mounted under tangential tension so as to exert compressive forces in radial directions upon the graphite insert at all points of its peripheral surface.
  • This construction insures that all points of the outer surface of the graphite insert will be at all times in intimate contact with the cooled metallic jacket so that the best possible heat transfer will be attained at all times from the graphite insert via the metallic jacket to the cooling medium which surrounds the entire mold.
  • a preferred structural feature of the invention consists in producing the cooled metallic jacket of a metal band which is spirally wound under tension around the peripheral surface of the graphite insert and the adjacent windings of which are tightly connected to each other, preferably by soldering.
  • the mold cavity which is defined and formed by the graphite insert and extends in the casting direction ' has a substantially rectangular oblong cross-sectional shape
  • This outer surface may also form an ellipsoidal curve which is preferably composed of two pairs of arcs in which the opposite arcs of each pair are congruent.
  • the curved parts of the outer surface of the graphite insert which extend along the wider sides of the mold have a weak curvature, while those which extend along the lnarnower sides of the mold have a sharp curvature.
  • the graphite insert may consist of a single piece of material, it is more preferably made of several parts, for example four parts, which interengage with each other, preferably by means of Z-shaped butt joints. rIhcse parts of the graphite insert are held together by being tightly wrapped by the metal band, that is, by winding the band under tension around the assembled insert. The start and the end of the metal band are then secured to the cover and the bottom of the cooling jacket.
  • the metal jacket is cooled during the casting operation, while the graphite insert is heated, the latter expands to a greater extent in the direction toward the metal jacket and thereby exerts an even greater pressure against this jacket than it does in the cold condition, so that the heat transfer will be further improved.
  • FIGURE l shows a cross section which is taken along the line I-I of FIGURE 2;
  • FIGURE 2 shows a cross section which is taken along the line II-II of FIGURE 1;
  • FIGURE 3 shows a cross section which is taken along the line III-III of FIGURE l;
  • FIGURE 4 shows an enlarged cross section which is taken along the line IV-IV of FIGURE 3; while FIGURE 5 shows a development of the inner wall 25 of the water jacket and illustrates one quarter of the peripheral surface of this wall which is located in the left upper part of FIGURE 3.
  • the graphite insert according to the invention preferably consists of four separate parts, namely, the two longitudinal plates 1 and the two transverse plates 2 which interengage with each other by means of Z-shaped contact surfaces 19 in order to prevent them from yielding or shifting inwardly when subjected to external pressure.
  • the outer peripheral surface of the graphite insert 1, 2 has an elliptical or at least substantially elliptical shape and it is enclosed by a coil 3 which consists of a copper band and is wound thereon under tension and thus forms a cooled metal jacket which engages upon the outer surface of the graphite insert and very effectively dissipates the heat of the latter and thus also the heat of the metal which is poured into this insert.
  • the ⁇ graphite insert -1, 2 together with the metallic cooling jacket 3 is clamped within a frame which consists of a lower supporting ring 8 and an upper supporting ring 4 which are connected to each other by spacer bolts 9 which extend through bores in the graphite insert and are screwed by screw threads 22 into the lower supporting ring 8.
  • the upper ends of spacer bolts 9 carry nuts 10 which are tightened so as to clamp the two supporting rings 4 and 8 and the intermediate graphite insert 1, 2 tightly together.
  • the graphite insert and the two supporting rings 4 and 8 are separated by plates 6 and 7 to which the upper and Ilower ends of the copper coil 3 are soldered at a and 15b, respectively.
  • the upper supporting ring 4 is secured to an annular water jacket which lhas an outer wall S and an inner wall and is tightly closed at its lower end by a ring 23 and at its upper end by a ring 24. Between this ring 24 and the upper supporting ring 4 a gasket ring 14 is placed and the two rings 4 and 24 are secured to each other by screws 13.
  • the inner wall 25 of the water jacket Cil which is spaced from the outer wall tof the graphite insert and from the cooling jacket 3 thereon is provided with spray Iholes 11. Within the central part of the wider sides of wall 25 these spray holes 11 are spaced at smaller distances from each other than those which are provided within the narrower ends of wall 25.
  • the graphite insert 1, 2 which is Ilimited at its upper and lower ends by the supporting rings 4 and 8 is inserted from above into the water jacket 5, 23, 24, 25 and it is secured to the upper supporting ring 4 by the screws 13.
  • the upper side of the first winding of the copper band 3 is tapered in its longitudinal direction, as indicated in FIGURE 4, and soldered at 15a to the upper supporting plate 7.
  • the copper band is then wound under tension around the outer surface of the graphite insert l, 2 and the joints 20 between the adjacent windings are closed by soldering.
  • the required tension of the coil windings is attained by passing the copper band 3 during the winding operation through a friction brake.
  • the lower end of the latter is soldered at 15b to the lower supporting plate ⁇ 6, as shown in FIGURE l, and the excessive part is cut olf flush with the lower edge of the soldered joint 15b.
  • the cooling water passes through the pipes 17 into the water jacket 5, 23, 24, 25 and is sprayed from the latter under pressure through the spray holes 11 upon the copperband jacket 3 around the graphite insert 1, 2 and it then flows downwardly along this jacket 3.
  • the mold according to the invention may be employed for producing copper plates with plane smooth outer surfaces.
  • the rate of lpouring and thus also the casting output of the mold may be very high without danger that the graphite insert might become overheated which will therefore remain fully @operative for la long time.
  • the louter dimensions of the oontinuously cast product will correspond much more ac-y curately and consistently with the desired dimensions than this was attainable with any molds according to prior constructions. This is due to the fact that the graphite insert is uniformly cooled and that its temperature remains relatively low because of the good heat dissipation.
  • a mold for continuously casting flat bars or plates of metal of rectangular cross-section having :a ratio between the transverse length and width greater than 1:1 comprising a ⁇ graphite insert having open opposite ends and a substantially oval outer peripheral surface and surrounding and defining a mold cavity having a rectangular cross-section with a length to width ratio :substantially greater than 1:1 and a cooled metalic jacket surrounding said graphite insert and engaging therewith under tangenrtial tension so as to exert compressive forces in radial directions upon said graphite insert at all points of its peripheral surface.
  • said metallic jacket consists of a metal band which is wound under tension around said peripheral surface of said graphite insert, the edges of the adjacent windings of said band being tightly secured to each other.
  • a mold as defined in claim 2 further comprising upper and lower supporting plates, means for securing said rsupporting plates to the upper land lower ends of said graphite insert, and means for securing the upper and lower ends of said metal band to said supporting plates.
  • said means for securing said supporting plates comprise spacer bolts extending continuously through said upper and lower supporting plates and clamping said plates upon the upper and lower ends of said graphite insert.
  • said means for securing said supporting plates comprise spacer bolts extending continuously through bores in said graphite insert and in Said upper and lower supporting plates and clamping said plates and said graphite insert together.
  • a mold as defined in claim 1 further comprising a Water jacket surrounding said metallic jacket on said graphite insert, the inner wlall of said water jacket being spaced from said metallic jacket and having spray holes therein for spraying cooling water upon said metallic jacket, and -means for supplying cooling water to said water jacket.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Coils Of Transformers For General Uses (AREA)
US521649A 1965-06-18 1966-01-19 A mold for continuous casting of flat bars having an oval graphical insert surrounded by a cooled rectangular jacket Expired - Lifetime US3412784A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEW39370A DE1265924B (de) 1965-06-18 1965-06-18 Stranggiesskokille

Publications (1)

Publication Number Publication Date
US3412784A true US3412784A (en) 1968-11-26

Family

ID=7602094

Family Applications (1)

Application Number Title Priority Date Filing Date
US521649A Expired - Lifetime US3412784A (en) 1965-06-18 1966-01-19 A mold for continuous casting of flat bars having an oval graphical insert surrounded by a cooled rectangular jacket

Country Status (5)

Country Link
US (1) US3412784A (pl)
AT (1) AT258496B (pl)
BE (1) BE674023A (pl)
DE (1) DE1265924B (pl)
GB (1) GB1086229A (pl)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3511305A (en) * 1965-05-03 1970-05-12 Alfred J Wertli Method for cooling a continuous casting
US3580328A (en) * 1969-05-12 1971-05-25 Gen Motors Corp Mold for improved control of heat transfer in casting plate or strip products
US3599706A (en) * 1968-04-11 1971-08-17 Wieland Werke Ag Continuous casting mold with coated jacket under spring tensioning
US3763924A (en) * 1968-06-21 1973-10-09 Cegedur Gp Apparatus for continuous vertical casting
CN103008584A (zh) * 2012-12-26 2013-04-03 西南铝业（集团）有限责任公司 铸造铝锂合金扁锭的冷却装置及应用方法
CN112475252A (zh) * 2020-12-10 2021-03-12 东北大学 一种高铸造应力合金铸锭的电磁半连铸装置及方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA528939A (en) * 1956-08-07 Wieland Hans Process and means for the continuous casting of metals
US2789328A (en) * 1954-11-19 1957-04-23 Kaiser Aluminium Chem Corp Apparatus for casting of metals
US3059295A (en) * 1958-06-12 1962-10-23 Wieland Werke Ag Composite mold for continuous casting
US3098269A (en) * 1960-05-09 1963-07-23 American Smelting Refining Mold for continuous casting
US3237252A (en) * 1963-10-01 1966-03-01 Babcock & Wilcox Co Mold clamping devices
US3304585A (en) * 1964-06-18 1967-02-21 Ascast Corp Graphite continuous casting mold

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB504519A (en) * 1937-06-30 1939-04-26 Wieland Werke Ag An improved method of and apparatus for casting metal rods, tubes and the like
FR873485A (fr) * 1940-04-27 1942-07-09 Procédé et dispositif pour la coulée continue de lingots de faible section, sans retassure
US2515284A (en) * 1947-12-26 1950-07-18 Kaiser Aluminium Chem Corp Differential cooling in casting metals
DE892230C (de) * 1950-07-21 1953-10-05 Wieland Werke Ag Verfahren zum Stranggiessen metallischer Werkstoffe
US2835940A (en) * 1956-07-18 1958-05-27 Wieland Werke Ag Mold and method for continuously casting cakes
FR1208427A (fr) * 1957-08-08 1960-02-23 Mannesmann Ag Lingotière pour coulée par extrusion
DE1092613B (de) * 1959-03-16 1960-11-10 Mannesmann Ag Stranggiesskokille

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA528939A (en) * 1956-08-07 Wieland Hans Process and means for the continuous casting of metals
US2789328A (en) * 1954-11-19 1957-04-23 Kaiser Aluminium Chem Corp Apparatus for casting of metals
US3059295A (en) * 1958-06-12 1962-10-23 Wieland Werke Ag Composite mold for continuous casting
US3098269A (en) * 1960-05-09 1963-07-23 American Smelting Refining Mold for continuous casting
US3237252A (en) * 1963-10-01 1966-03-01 Babcock & Wilcox Co Mold clamping devices
US3304585A (en) * 1964-06-18 1967-02-21 Ascast Corp Graphite continuous casting mold

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3511305A (en) * 1965-05-03 1970-05-12 Alfred J Wertli Method for cooling a continuous casting
US3599706A (en) * 1968-04-11 1971-08-17 Wieland Werke Ag Continuous casting mold with coated jacket under spring tensioning
US3763924A (en) * 1968-06-21 1973-10-09 Cegedur Gp Apparatus for continuous vertical casting
US3580328A (en) * 1969-05-12 1971-05-25 Gen Motors Corp Mold for improved control of heat transfer in casting plate or strip products
CN103008584A (zh) * 2012-12-26 2013-04-03 西南铝业（集团）有限责任公司 铸造铝锂合金扁锭的冷却装置及应用方法
CN103008584B (zh) * 2012-12-26 2015-12-23 西南铝业（集团）有限责任公司 铸造铝锂合金扁锭的冷却装置及应用方法
CN112475252A (zh) * 2020-12-10 2021-03-12 东北大学 一种高铸造应力合金铸锭的电磁半连铸装置及方法
CN112475252B (zh) * 2020-12-10 2021-10-15 东北大学 一种高铸造应力合金铸锭的电磁半连铸装置及方法

Also Published As

Publication number Publication date
BE674023A (pl) 1966-04-15
DE1265924B (de) 1968-04-11
AT258496B (de) 1967-11-27
GB1086229A (en) 1967-10-04

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