US3750742A - Continuous steel casting apparatus - Google Patents

Continuous steel casting apparatus Download PDF

Info

Publication number
US3750742A
US3750742A US00214828A US3750742DA US3750742A US 3750742 A US3750742 A US 3750742A US 00214828 A US00214828 A US 00214828A US 3750742D A US3750742D A US 3750742DA US 3750742 A US3750742 A US 3750742A
Authority
US
United States
Prior art keywords
ingot
ingot mold
lid
mold
plates
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
US00214828A
Other languages
English (en)
Inventor
U Brusa
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 US3750742A publication Critical patent/US3750742A/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
    • B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
    • B22D11/0608—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars formed by caterpillars

Definitions

  • ABSTRACT In a method of casting of steel by pouring it in the mol-
  • Foreign Application Priority Data ten state from an oblique spout onto a parallel, oblique Feb. 6, 1968 Italy 50417 A/68 which has sectims mdividuany "Wing almg July 30, 1968 Italy 52642 A/68 a P which after separating mm the P lidified billet, return to the original point, an apparatus 52 us.
  • Cl. 164/276, 164/279 is P which includes a cooled ingot "101d longitu- 51 Int.
  • the present invention relates to apparatus for the continuous casting of steel.
  • Known methods and apparatus for the continuous casting of steel consist in the pouring of liquid steel into a vertical copper ingot mold which is water cooled.
  • ingot molds which were moving alternately and vertically, were adopted. This helped. the cooling of the billet and allowed an increase in the drawing speed to about cm per second without usually incurring in any breakage of the billet.
  • the apparatus comprises substantially a cooled ingot mold, divided in its longitudinal direction into two sections; a container used as a ladle and sometimes called tundish" that is provided with a lower curved spout and mechanical means to move forward one section of the ingot mold into a preestablished position, to then lower it and then to bring it back up-stream from the other section and in alignment therewith.
  • the two sections of the ingot mold which may for example have their ends shaped to fit one another alternately under the spout, move together for a given distance until the downstream section, being in contact with already solidified steel, disengages from the billet and travels again upstream to renew the cycle.
  • said sections of the ingot mold are open upwardly and the one of them which is in contact with molten steel is provided with a fixed cover or lid which does not move together withthe ingot mold.
  • each section of the ingot mold is open upwardly and cooperates with a cover which does not participate in the translational movement of the assembly, but consists of a structure shaped like a track which permits it to slide at the same speed as the steel in contact therewith.
  • the two sections of the ingot mold. are each mounted on a supporting structure in such a way as to be initially subjected to a traction in a longitudinal direction.
  • the stresses due to heating are thus neutralized and distortions are minimized.
  • the ingot mold is provided with a narrow upper slit, sufficient to permit the passage of the spout and provided with aplug of the corresponding cross section.
  • the plug and- /or one or more of the ingot mold walls are constructed with grooved plates to allow the circulation of cooling water, the plates having ribs wherein the ends of bolts, whose nuts bear on the surface of a considerably thicker block, are screwed, in order to minimize distortions due to temperature.
  • the ingot mold is provided with a lid which is moved forward: at the same speed as the solidified billet.
  • the steel is also water cooled through the lid which is hollow and divided in a plurality of sections.
  • each ingot mold section has a longitudinal pin on which a lid, divided into a plurality of sections, is pivoted.
  • the lid sections are arranged side-by-side to one another and may be moved from the open position to the closed position, for example, by automatic means.
  • FIG. I is a schematic side view of a preferred embodiment of the apparatus according to the invention.
  • FIG. 2 is a simplified cross sectional view of the apparatus of FIG. 1;
  • FIG. 3 is a cross sectional view of the ingot mold according to a first variant of the apparatus
  • FIG. 4 is a cross sectionalview of an ingot mold and of the lower part of the ladle in a variant of FIG. 3;
  • FIG. 5 is a section of the ribbed structure of the lid and/or wall of the] apparatus of the invention.
  • FIG. 6 is a perspective view of still another embodiment of the ingotmold
  • FIG. 7 is a schematic assembly :for the ingot FIG.6; t H.
  • FIG. 8 and 9 represent perspective and side views, respectively, of a further construction of the ingot mold
  • FIG. 10 is a schematic drawing of the construction of the lid; i 7
  • FIG. 11 is a perspective view of an installation according to a further, preferred embodiment of the invention.
  • FIG. 12 is a schematic side view of the installation of FIG. 11, in working position;
  • FIG. 13 is a view similar to FIG. 12 but illustrating a different working phase
  • FIG. 14 is a schematic end view of the apparatus of the invention.
  • the apparatus comprises an ingot mold formed by two section 1A and 1B carried respectively by arms 2A, 3A and 2B, 3B.
  • the ingot sections 1A and 1B are made of copper with the bottom and side walls provided with recesses cooled by means of circulating water entering from an pipe inlet 4 and exiting from a pipe outlet 5.
  • the inlet 4 and the outlet 5 are, in turn, connected with pipes 6 and 7, which terminate on drum 8.
  • cooling means have been represented for section 18 only, although also section 1A is provided with analogous means.
  • Arms 2A, 3A and 2B, 3B are pivotably connected to a frame 9A or, respectively, 98 which are provided with wheels 10A, 11A or, respectively 1013, 113 which slide on rails 12.
  • the ingot mold sections 1A and 1B are carried by arms 3A and 3B positioned on opposite sides with respect to the longitudinal center axis of the apparatus.
  • FIG. 1 there is also shown part of a ladle 13 the bottom of which is provided with a curved spout 14 for the withdrawal of a jet parallel to the direction of flow, that is, parallel to the rails 12.
  • the ingot mold may be constructed in several ways.
  • the ingot mold is a cross-sectionally U-shaped vessel with hollow walls, against which a hollow, water-cooled lid 15 is resting. From FIG. 1, it may be clearly seen that this lid 15 is somewhat shorter than the ingot mold 1A so as to leave a free passage for the steel jet or, respectively,for the ladle spout 14.
  • the ingot mold has a cross section of an almost completely rectangular shape, and is provided with a narrow aperture having outwardly sloping edges, to form the seat for a lid 16 of conjugate shape.
  • FIG. 5 One advantageous construction for the lid or for one or more of the walls of the ingot mold, is represented in FIG. 5.
  • a plate 17 is provided therein with very deep and parallel grooves 18 leaving a thin wall 19 as the bottom of grooves 18.
  • the grooves are closed on top by a block 20 crossed by a set of bolts 21 that are fastened to the ribs 22 flanking the grooves 18.
  • each section 1A, 1B of the ingot mold may be desirable to mount in such a way as to submit it to a longitudinal tension.
  • FIG. 6 there is shown a thin wall positioned between two channeI-shaped heads 23, 24 which are tight-fitted on a frame 26, as also shown in FIG. 7.
  • FIG. 10 illustrates a construction of the lid 10 wherein friction due to contact with the steel dropping in the ingot mold is avoided.
  • a tracked belt 32 slides around two rollers 30, 31 at least one of which is driven by a motor.
  • Pipes 33 for spraying water upon the lower section of the belt contacting the steel, are provided in the innerside of the band path.
  • the molten steel drops from the spout l4 and enters the ingot mold section which is directly under the cover or lid 15.
  • the steel cools upon contacting the walls and solidifies and then exits from the ingot mold in the solid state and is deviated along the path defined by rollers 34, 35 which move it forward towards a suitablecutting means (not shown).
  • Section 18 of the ingot mold which is no longer in contact with the billet, lowers and, by means not shown in the drawings, is returned to the original upper position along the corresponding rail 12, travelling beyond section 1A. When raised again to the level of section 1A, it takes its place at the beginning of the descent.
  • the two sections 1A and 1B of the ingot mold are provided with means which permit their sliding movement on rails 51, 52.
  • Said means consist of members 50 supporting said ingot molds and provided with wheels 62 engaging rails 51 and 52.
  • gear 63 meshing with a fixed rack 64: gear 63 is driven by a motor mounted on a bracket 66 carried by said one member 50.
  • each section of the ingot mold is provided with a lateral pin 53 on which a number of lid sections 55 are pivotally mounted through a sleeve 54 to form a cover which may close the upper end of the ingot mold.
  • each lid section may be moved from a closed position, indicated at 55, to an open position indicated at 55', or vice versa.
  • the closing motion of the various lid sections is effected, at a suitable time, automatically, such as, for instance, by contact with a shaped plate 56, fixedly positioned with respect to the apparatus frame.
  • Pin 53 and lid sections 55 are hollow and water cooled.
  • the opening motion of the various lid sections may be effected automatically at the suitable time such as, for instance, by contact of a pin 67 that is secured to each lid section with a guide 68 fixedly positioned with respect to the apparatus frame.
  • the lid sections 55 are kept closed by pressure wheels 69 which oppose the ferrostatical pressure exerted by the molten steel.
  • a ladle 13 with spout 14 is fixedly supported above the ingot mold 1A.
  • Sliding rails 51, 52 are integrally connected with pairs of vertical plates 57 and 58 respectively, pivoting on a pin 59 and located under the action of their respective jacks 60 and 61.
  • rack 64 is integrally connected with vertical plates 57, 58.
  • FIGS. 12 to 14 show also flexible pipes which lead to the ingot molds and to the covers the cooling water coming from a reservoir 71.
  • the two ingot mold sections are aligned and in end-to-end contact with each other.
  • Plates 57 and 58 are positioned with their upper edges parallel to one another and hanging to the left (FIG. 12), that is, the pistons of jacks 60 and 61 are in the position of maximum extraction.
  • the lid sections are in the raised position.
  • the flow of the molten steel contained in the ladle 13 is initiated and the steel falls in the underlying ingot mold section 1A while being cooled at contact with the cooled mold bottom and walls.
  • the steel solidifies while it is falling and the ingot mold is concurrently moved down at the same speed by motor 65 which drives gear 63 meshing with rack 64.
  • lid sections 55 are opened by the action of pins 67 sliding on guide 68 and the billet is diverged towards a cutting device (not shown).
  • the mold section which is in the forwardmost position leaves the billet and is caused to slide in the opposite direction. This movement is achieved by withdrawing the piston within the jack 60, so as to bring plate 57 in horizontal position, and then operating motor 65. When the ingot mold has almost reached the end of plate 57, the latter is again raised and the cycle is repeated.
  • Apparatus for continuously casting steel ingots comprising first and second cooled ingot molds, container means for feeding molten steel successively into said first and second ingot molds and means for moving said first ingot mold away from said container after said first ingot mold is filled and for replacing said first ingot mold with said second ingot mold, said moving means comprising plates for slidably supporting said ingot molds, means for pivotally supporting said plates about a horizontal axis, jacks adapted to pivot said plates about said axis, a support member means secured to each said ingot mold, motor means secured to said support member means of each said ingot mold, each said motor means including an output pinion and a fixed rack integrally connected with each of said plates, said racks being in meshing engagement with respective ones of said pinions.
  • each said ingot mold is comprised of a thin walled, elongated central section, enlarged heads at the opposed ends of said central section and means for subjecting said central section to tension forces.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
US00214828A 1968-02-06 1972-01-03 Continuous steel casting apparatus Expired - Lifetime US3750742A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT5041768 1968-02-06
IT5264268 1968-07-30

Publications (1)

Publication Number Publication Date
US3750742A true US3750742A (en) 1973-08-07

Family

ID=26329411

Family Applications (1)

Application Number Title Priority Date Filing Date
US00214828A Expired - Lifetime US3750742A (en) 1968-02-06 1972-01-03 Continuous steel casting apparatus

Country Status (9)

Country Link
US (1) US3750742A (en))
AT (1) AT313500B (en))
BE (1) BE724627A (en))
CH (1) CH480892A (en))
DE (1) DE1810123A1 (en))
FR (1) FR1593729A (en))
GB (1) GB1235728A (en))
LU (1) LU57441A1 (en))
NL (1) NL6901866A (en))

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4662428A (en) * 1986-02-07 1987-05-05 Trendov Asparough O Method and apparatus for continuously sizing, preforming or casting
WO1987004648A1 (en) * 1986-02-07 1987-08-13 Oscar Trendov Method and apparatus for continuous casting using plural molds
US4732207A (en) * 1986-02-07 1988-03-22 Oscar Trendov Apparatus with screw arms for continuously sizing, preforming or casting

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH480892A (it) * 1968-02-06 1969-11-15 Ceretti Ind Spa Procedimento di colata continua dell'acciaio, e apparecchio atto a realizzare detto procedimento
EP0271603B1 (de) * 1986-12-19 1990-05-09 MANNESMANN Aktiengesellschaft Giessvorrichtung für Metalle mit einem kontinuierlich umlaufenden Tragelement

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1928562A (en) * 1933-09-26 Mantjfacttoe of metal billets
US2091348A (en) * 1933-11-24 1937-08-31 Du Pont Machine for the continuous casting of metal sheets
CA713979A (en) * 1965-07-20 English Steel Corporation Limited Method and apparatus for casting steel billet or slab
DE1810123A1 (de) * 1968-02-06 1969-08-14 Ind Spa Kontinuierliches Stahlgiessverfahren und Einrichtungen zur Durchfuehrung des Verfahrens

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1928562A (en) * 1933-09-26 Mantjfacttoe of metal billets
CA713979A (en) * 1965-07-20 English Steel Corporation Limited Method and apparatus for casting steel billet or slab
US2091348A (en) * 1933-11-24 1937-08-31 Du Pont Machine for the continuous casting of metal sheets
DE1810123A1 (de) * 1968-02-06 1969-08-14 Ind Spa Kontinuierliches Stahlgiessverfahren und Einrichtungen zur Durchfuehrung des Verfahrens

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4662428A (en) * 1986-02-07 1987-05-05 Trendov Asparough O Method and apparatus for continuously sizing, preforming or casting
WO1987004648A1 (en) * 1986-02-07 1987-08-13 Oscar Trendov Method and apparatus for continuous casting using plural molds
US4732207A (en) * 1986-02-07 1988-03-22 Oscar Trendov Apparatus with screw arms for continuously sizing, preforming or casting

Also Published As

Publication number Publication date
DE1810123A1 (de) 1969-08-14
AT313500B (de) 1974-02-25
LU57441A1 (en)) 1969-03-11
NL6901866A (en)) 1969-08-08
FR1593729A (en)) 1970-06-01
BE724627A (en)) 1969-05-02
CH480892A (it) 1969-11-15
GB1235728A (en) 1971-06-16

Similar Documents

Publication Publication Date Title
US2904860A (en) Metal casting method and apparatus
US3495651A (en) Starting device for continuous castings
US4869310A (en) Belt type continuous casting machine
US359348A (en) Mechanism for forming ingots
US3344844A (en) Apparatus for handling a curved continuous casting starting bar
US3933192A (en) Semi-continuous casting method for flat ingots
US3750742A (en) Continuous steel casting apparatus
US4549600A (en) Plant for the production of castings in a stepwise advanced casting mould consisting of identical, flaskless mould parts
AU721266B2 (en) Strip casting apparatus
US6012508A (en) Strip casting
US3166803A (en) Device for centering the stream of metal to the middle of the mould during vertical continuous casting
SU1012789A3 (ru) Заливочное устройство центробежнолитейной машины
US3771587A (en) Continuous centrifugal casting apparatus for hollow shapes
US2268100A (en) Continuous casting apparatus
US3464482A (en) Continuous casting
US3762462A (en) Apparatus for storing and positioning the leader of an ingot in a continuous casting apparatus
US3946586A (en) Process and apparatus for rolling seamless tubes
CN112427611A (zh) 定径水口更换浇注装置及定径水口开浇方法
US1992739A (en) Centrifugal casting
DE3027789A1 (de) Vertikalstranggiessanlage
US3759313A (en) R casting nonferrous metal strips method of starting a casting machine having caterpillar type molds fo
US4557313A (en) Continuous sequential casting apparatus
US2895189A (en) Steel casting process and means for carrying out the same
SE438970B (sv) Anordning vid hantering av permanenta formar uppburna av hallare
US4632175A (en) Continuous casting machine