US3461950A - Apparatus for producing adjustable reciprocation of a continuous casting mold - Google Patents

Apparatus for producing adjustable reciprocation of a continuous casting mold Download PDF

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Publication number
US3461950A
US3461950A US590291A US3461950DA US3461950A US 3461950 A US3461950 A US 3461950A US 590291 A US590291 A US 590291A US 3461950D A US3461950D A US 3461950DA US 3461950 A US3461950 A US 3461950A
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United States
Prior art keywords
mold
reciprocator
casting
continuous casting
guides
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Expired - Lifetime
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US590291A
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English (en)
Inventor
Anatol Michelson
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EW Bliss Co Inc
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Bliss Co
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Publication date
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Assigned to E.W. BLISS COMPANY, INC. A DE CORP. reassignment E.W. BLISS COMPANY, INC. A DE CORP. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: E.W. BLISS COMPANY
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Expired - Lifetime legal-status Critical Current

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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
    • B22D11/053—Means for oscillating the moulds
    • 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
    • B22D11/128—Accessories for subsequent treating or working cast stock in situ for removing
    • B22D11/1282—Vertical casting and curving the cast stock to the horizontal

Definitions

  • the ingot In steel casting, the ingot is only partially solidified upon leaving the mold having a deep liquid center with a solid but fragile skin. The skin is subject to being torn due to friction against the sides of the mold. In the event of a tear, molten metal from the interior of the ingot will run against the mold and solidify, requiring an interruption of the casting process.
  • a lubricant may be introduced between the ingot and the mold in order to reduce the friction.
  • the mold may be reciprocated parallel to the mold axis so that the ingot travels with the mold on the downstroke eliminating relative movement between the mold and ingot except on the upstroke. The risk of tearing is not as great owing to the better skin formed on the downstroke and the rate of reciprocation employed on the upstroke.
  • the prior art mold reciprocators are so arranged with respect to the mold that when it is desired to exchange molds between heats, much time and labor is required since this can only be done from above the mold.
  • a mold reciprocator which is adjustable during casting, may be used with straight or curved molds, allows mold exchange from the side and is designed to operate without the use of cams or mold oscillation springs.
  • a mold reciprocator comprises a pair of mold guides, one on each side of the mold, reciprocal parallel to the mold axis.
  • An actuator is connected to the mold guides for imparting reciprocal movement thereto.
  • a pair of control elements one being capable of bidirectional adjustment relative to the other so as to vary the space therebetween, is positioned adjacent the actuator.
  • an operator responsive to the movements of the actuator, is arranged to control the mold reciprocations in accordance with a periodic timedisplacement function as determined by the set spacing of the control elements.
  • a U-shaped frame surrounds the mold on three sides housing the mold reciprocator mechanism.
  • the mold guides may be curved or straight depending upon the mold.
  • the mold reciprocator mechanism includes a U-shaped lever pivoted on opposite sides of the mold and is operated by a single hydraulic cylinder connected at one ,end thereof to prevent misalignment of the mold on the guides.
  • Another object is to provide a mold reciprocator operated by means of a single hydraulic cylinder in conjunction with a linkage mechanism which will not be subject to distortion causing the mold to seize on its guides.
  • Still another object is to provide a practical and workable mold reciprocator capable of straight or curved movements which can be used therefore with either straight or curved molds.
  • a further object is to provide a mold reciprocator, the arrangement of which with respect to the mold permits mold exchange from the side thereby saving much time and labor.
  • FIGURE 1 is a partial side view showing the invention used in conjunction with a curved continuous casting machine
  • FIGURE 2 is a side view of the mold reciprocator constructed in accordance with a preferred embodiment of the invention.
  • FIGURE 3 is a horizontal sectional view taken along line 33 of FIGURE 2;
  • FIGURE 4 is a fragmentary vertical sectional view taken along line 44 of FIGURE 2.
  • FIGURE 5 is a sectional view of a control assembly for the mold reciprocator taken along line 55 of FIGURE 3.
  • FIGURE 1 depicts a water cooled, flow-through mold M which receives molten metal from a ladle L positioned above the pouring floor F.
  • the mold M is curved so that a curved ingot I will be withdrawn therefrom.
  • the mold might just as well be straight, in which case the ingot is either bent through a 90 arc after leaving the mold or remains straight depending on the type of casting plant.
  • the ingot will have a fragile, but solid outer skin S upon leaving the mold and a deep liquid center H. Solidification is completed at some distance below the mold M depending on the cooling provided primarily by water cooling jets I.
  • Support rolls R guide the ingot during the solidification processv Terminal equipment such as Withdrawl and straightening rolls and a cutting mechanism (not shown) would be provided in the normal casting plant.
  • the mold M is reciprocated by a mold reciprocator indicated generally at 10.
  • the mold reciprocator 10 includes a U-shaped frame 12 surrounding three sides of the mold M.
  • a double acting hydraulic cylinder 14 positioned centrally within the frame has its piston rod 15 connected to a U-shaped lever 17 which fits within the frame 10.
  • the lever 17 is pivoted at 18 within the leg portions 19 which extend on opposite sides of the mold. Pairs of bushings 20 in each leg portion 19 each receive a mold guide 22 located on opposite sides of the mold which has a curvature coinciding with that of the mold.
  • Mold holders 25 on each mold guide have hinge clamps 26 which are releasably engageable with a mold flange 27.
  • a pair of bifurcated ends 30 on the lever 17 link with a collar 32 secured around each mold guide 22.
  • a pair of links 34 connect the lever 17 and mold guides 22.
  • the mold stroke is adjusted during operation from a remote location by means of crank 39 which operates a hydraulic control 40 inside the frame 12.
  • the control 40 as best shown in FIGURES 3 and 5 and generally includes a four-way control valve 42 of standard design, a valve operator 44, a reciprocal and rotatable operating rod 45 and a pair of discs 46, 47 having contact surfaces.
  • Disc 46 is on a threaded portion 48 of the operating rod 45 and is held against rotation by means of a slot 50 which engages a lug 51 on a support bracket 52.
  • Disc 47 is fixed on the operating rod 45.
  • On the U-shaped lever 17 are two bosses 53 each having a known diameter D.
  • Each boss 53 is located in the space between the discs 46, 47 which are set at a known spacing L.
  • a reduced diameter portion 54 of the valve operator 44 is received in a hollow end of the operating rod 45.
  • a coil spring 55 surrounds the reduced diameter portion 54 and bears against a washer 56 on the end of valve operator 44 and a shoulder 57 on the end of rod 45. The shoulder 57 also engages the valve operator 44 at 58.
  • the valve 42 has a fitting 60 connected to a source of hydraulic pressure and alternate delivery and return fluid lines 61, 62 in fluid communication with the opposite ends of the hydraulic cylinder 14.
  • Rotation of the operating rod 45 for adjusting the distance L between the discs 46, 47 is provided for by means of bevel gear 66 which is mounted on bushing 67 keyed to the end of the operating rod 45.
  • the crank 39 carries on its end a bevel gear 68 engageable with the 4 bevel gear 66.
  • this arrangement permits the operating rod 45 to reciprocate within bushing 67 while allowing rotary motion to be transmitted from the gear 66 through sleeve 67 to the rod 45 for adjusting the position of disc 46 (i.e. varying the distance L between disc 46 and 47).
  • the mold stroke is proportional to the distance L so that by adjustment of the discs 46, 47, the stroke may be changed accordingly; the greater the distance L the greater the mold stroke and vice versa.
  • This adjustment is accomplished by rotating the actuating rod 45 by means of the crank 39. Because the disc 46 is restrained from rotation by means of lug 51, the disc is moved toward or away from disc 47 on the threaded portion 48 of the operating rod 45.
  • the crank 39 can be rotated at any time, including when casting is in progress and the mold is reciprocating.
  • the frequency of reciprocation is also adjustable by using a pump (not shown) with a variable displacement for pressurizing the hydraulic cylinder 14. Moreover, by merely replacing the hydraulic cylinder 14 with one having a different piston size ratio, the ratio of up to down speed can be varied.
  • the design of the mold reciprocator provides one open side K for convenient exchange of the mold M from the side. Also, this design eliminates the problem of the mold seizing on its guides by permitting a single hydraulic cylinder to be used instead of two on opposite sides of the mold as in the prior art.
  • a mold reciprocator for a continuous casting comprising:
  • an actuator means including an hydraulic cylinder drivingly connected through a lever to the mold guides for imparting a periodic time-displacement stroke thereto;
  • a pair of elements each having a contact surface and adjustable means for providing bidirectional adjustment of one of said elements relative to the other so as to permit the space between said contact surfaces to be selectively varied;
  • an actuator control valve means for controlling the supply of hydraulic fluid to said hydraulic cylinder

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
US590291A 1966-10-28 1966-10-28 Apparatus for producing adjustable reciprocation of a continuous casting mold Expired - Lifetime US3461950A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US59029166A 1966-10-28 1966-10-28

Publications (1)

Publication Number Publication Date
US3461950A true US3461950A (en) 1969-08-19

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US590291A Expired - Lifetime US3461950A (en) 1966-10-28 1966-10-28 Apparatus for producing adjustable reciprocation of a continuous casting mold

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US (1) US3461950A (de)
BE (1) BE705744A (de)
CH (1) CH456860A (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3595302A (en) * 1967-05-11 1971-07-27 Schloemann Ag Cooling structure for continuous-casting mold
US3724529A (en) * 1968-10-18 1973-04-03 Combustible Nucleaire Plant for continuous vacuum casting of metals or other materials
US3965964A (en) * 1974-01-11 1976-06-29 Vereingte Osterreichische Eisen- Und Stahlwerke-Alpine Montan Aktiengesellschaft Method of continuously casting steel strands, in particular slabs
US5129811A (en) * 1989-08-03 1992-07-14 Mannesmann Aktiengesellschaft Continuous-casting plant having a mold-oscillating device

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1142551A (en) * 1913-04-21 1915-06-08 George W Burnhart Fluid-pressure motor.
US3042326A (en) * 1959-08-27 1962-07-03 Monsanto Chemicals Traverse control mechanism
US3088181A (en) * 1958-07-31 1963-05-07 British Iron Steel Research Continuous casting of metals
US3154815A (en) * 1960-12-13 1964-11-03 Olsson Erik Allan Apparatus for accomplishing mold movement in continuous casting machines
US3258815A (en) * 1963-05-03 1966-07-05 Koppers Co Inc Continuous casting machine
GB1040273A (en) * 1963-01-30 1966-08-24 United Steel Companies Ltd Improvements in mould reciprocating mechanism for use in continuous casting machines
US3293707A (en) * 1960-09-07 1966-12-27 Olsson Erik Allan Methods in continuous casting

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1142551A (en) * 1913-04-21 1915-06-08 George W Burnhart Fluid-pressure motor.
US3088181A (en) * 1958-07-31 1963-05-07 British Iron Steel Research Continuous casting of metals
US3042326A (en) * 1959-08-27 1962-07-03 Monsanto Chemicals Traverse control mechanism
US3293707A (en) * 1960-09-07 1966-12-27 Olsson Erik Allan Methods in continuous casting
US3154815A (en) * 1960-12-13 1964-11-03 Olsson Erik Allan Apparatus for accomplishing mold movement in continuous casting machines
GB1040273A (en) * 1963-01-30 1966-08-24 United Steel Companies Ltd Improvements in mould reciprocating mechanism for use in continuous casting machines
US3258815A (en) * 1963-05-03 1966-07-05 Koppers Co Inc Continuous casting machine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3595302A (en) * 1967-05-11 1971-07-27 Schloemann Ag Cooling structure for continuous-casting mold
US3724529A (en) * 1968-10-18 1973-04-03 Combustible Nucleaire Plant for continuous vacuum casting of metals or other materials
US3965964A (en) * 1974-01-11 1976-06-29 Vereingte Osterreichische Eisen- Und Stahlwerke-Alpine Montan Aktiengesellschaft Method of continuously casting steel strands, in particular slabs
US5129811A (en) * 1989-08-03 1992-07-14 Mannesmann Aktiengesellschaft Continuous-casting plant having a mold-oscillating device

Also Published As

Publication number Publication date
BE705744A (de) 1968-03-01
CH456860A (de) 1968-05-31

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Legal Events

Date Code Title Description
AS Assignment

Owner name: E.W. BLISS COMPANY, INC. A DE CORP.

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:E.W. BLISS COMPANY;REEL/FRAME:004221/0378

Effective date: 19831110