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US3497195A - Apparatus for a continuous casting flame cutting machine - Google Patents

Apparatus for a continuous casting flame cutting machine Download PDF

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Publication number
US3497195A
US3497195A US609843A US3497195DA US3497195A US 3497195 A US3497195 A US 3497195A US 609843 A US609843 A US 609843A US 3497195D A US3497195D A US 3497195DA US 3497195 A US3497195 A US 3497195A
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Prior art keywords
casting
cutting machine
flame cutting
cut
continuous casting
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US609843A
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Gustav Kalkhof
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Messer Griesheim GmbH
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Messer Griesheim GmbH
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K7/00—Cutting, scarfing, or desurfacing by applying flames
    • B23K7/002—Machines, apparatus, or equipment for cutting plane workpieces, e.g. plates
    • B23K7/003—Machines, apparatus, or equipment for cutting long articles, e.g. cast stands, plates, in parts of predetermined length
    • 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
    • B22D11/126—Accessories for subsequent treating or working cast stock in situ for cutting
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/465—Cutting motion of tool has component in direction of moving work
    • Y10T83/4757—Tool carrier shuttles rectilinearly parallel to direction of work feed
    • Y10T83/476—Including means to secure work to carrier

Definitions

  • An apparatus for cutting a continuous casting includes a flame cutting machine adapted to move synchronously with the casting, the flame cutting machine has burners for cutting the casting as it moves, releasable holding means are provided for the flame cutting machine to engage a portion of the casting to be cut off before completion of the cutting operation.
  • the present invention is concerned with an apparatus for a continuous casting flame cutting machine adapted to move synchronously with the casting, particularly for slabs, in which the cut is made from two sides by two burners moving towards one another.
  • Flame cutting machines of the above kind are usually adapted to travel on rails in the direction of casting. synchronisation of the longitudinal advance of the flame cutting machine with the speed of the casting is eifected during the cutting operation in a simple manner by clamping the flame cutting machine to the casting, which is guided on a roller table. After completion of the cutting, this clamping connection is released and the flame cutting machine travels in the reverse direction for a distance corresponding to a casting length, in order to commence a new cut. The separated casting is carried forward by the roller table and transported away for further use.
  • synchronisation of the longitudinal advance of the flame cutting machine with the speed of the casting is eifected during the cutting operation in a simple manner by clamping the flame cutting machine to the casting, which is guided on a roller table. After completion of the cutting, this clamping connection is released and the flame cutting machine travels in the reverse direction for a distance corresponding to a casting length, in order to commence a new cut.
  • the separated casting is carried forward by the roller table and transported away for further use.
  • the length of the individual casting must correspond to at least twice the distance between the rollers of the roller table.
  • the problem with which the present invention is concerned is to obviate the above disadvantages.
  • the flame cutting machine should be provided with a releasable holding device for the portion of the casting to be cut off, this device engaging with the portion to be cut off before completion of the cut.
  • the head portion of the casting can now be gripped by the holding device directly before or shortly after the commencement of the cutting operation, so that a turning or tipping of the head portion is avoided in an advantageous manner.
  • the head portion or the individual castings can be transported away by the holding device for further use.
  • the construction of the holding device may be of any desired type. According to the present invention, however, it is preferred to use a clamping device operated by a pressure medium.
  • a clamping device of this See type for example, one operated pneumatically, can be installed in an advantageous manner without particular expense, since compressed air is certainly available in metallurgical Works.
  • the holding device should comprise two clamp jaws disposed on both sides of the individual casting and articulated like levers, on the flame cutting machine and that one end of each of the clamp jaws should be associated with the individual casting and the other end with a piston to which pressure is applied.
  • the ends of the clamp jaws associated with the individual casting prefferably be constructed in such a manner that a twisting of the individual casting is impossible.
  • the clamp jaws may, for example, have comparatively large dimensions in the casting direction. For reasons of weight, however, it is preferred that the ends of the clamp jaws associated with the individual casting should, in each case, be forked and that at the end of each of the arms of the 'fork there should be secured a pin which, during the holding of the individual casting which has been cut off, engages with the individual casting, so that the latter is held at at least four points.
  • the two pistons to which pressure is applied may each be disposed in a separate cylinder independently of one another.
  • the two pistons to which pressure is applied should be slidable in a common cylinder and the pressure medium should be applied to the cylinder between the two pistons. This form of construction is preferred because of its simplicity and the little space which it requires.
  • FIGURE 1 shows diagrammatically a continuous casting flame cutting machine in elevation
  • FIGURE 2 is a diagrammatic view in the direction of the arrow A in FIGURE 1.
  • a continuous casting 10 is guided on a roller table comprising rollers 11.
  • a continuous casting flame cutting machine 12 is disposed for travelling on rails 13 in the direction of the casting 10 and is fastened to the latter by means of a clamping device 14 operated by a pressure medium, so that the movement of the flame cutting machine 12 takes place synchronously with the movement of the continuous casting 10.
  • the flame cutting machine 12 has two cutting torches 15, 16 which travel towards one another as far as a determined point during the cutting operation, the casting thereby being cut into from both sides. One torch then moves in the reverse direction, while the other completes the cut.
  • the cutting points are designated by 17 in FIGURE 1.
  • the distance between two cutting points 17, which constitutes the length of an individual casting must correspond to at least twice the distance between two rollers 11 of the roller table in order to ensure the satisfactory further transport of the individual casting cut off.
  • the head piece 18- is cut off, there is, consequently, on the one hand, a danger that this piece will drop, so that, at the same time, the cut gaps will be narrowed, while, on the other hand, the head portion 18 may be tipped over sideways because the two cut gaps meet one another in an eccentric position, so that one side of the head portion 18 is slightly raised and may damage the cutting torch in question.
  • a holding device 19 is provided on the flame cutting machine, this device holding the head portion 18 approximately at the commencement of the cutting operation and releasing it only on completion of the cut. The separated head portion 18' then falls into a container 20 held in readiness.
  • the clamping device 19 comprises two jaws 21 articulated at the side of the flame cutting machine 12 in the manner of levers.
  • the ends of these jaws 21, which are associated with the head portion 18 or with any individual casting, are forked, a pin 22 being fastened to each arm of the fork.
  • the pins 22 engage with the head portion or individual casting and prevent it from dropping or twisting.
  • the other ends of the jaw 21 are each connected to a respective piston 23.
  • the two pistons are slidably mounted in a common pressure cylinder 24.
  • the pressure medium is supplied between the two pistons 23 in a manner which is not illustrated.
  • the pistons 23 and the associated ends of the jaws 21 are thereby moved outwards and the pins 22 are pressed firmly against the head portion 18.
  • the clamping device 14 previously mentioned may, of course, also be of similar construction to the holding device 19.
  • the two devices 14, 19 are, in this case, advantageously connected to the same pressure medium system.
  • An apparatus for cutting a continuous casting comprising means for moving the casting in a substantially horizontal direction, a flame cutting machine adapted to move synchronously with the casting, said flame cutting machine including burner means for cutting completely across the casting as the casting is moving whereby a portion of the casting will be cut off from the remainder of the casting, said flame cutting machine being provided with releasable holding and removal means for engaging the portion to be cut off before completion of the cutting operation and removing the cut oil portion after completion of the cutting operation, and said holding and removal means having a plurality of contact points disposed longitudinally of the path of motion of the portion to be cut 01f for engaging the portion to be cut off and preventing it from dropping and twisting during engagement thereof.
  • An apparatus including pressure medium means for operating said holding means.
  • An apparatus for cutting a continuous casting comprising means for moving the casting, a flame cutting machine adapted to move synchronously with the casting, said flame cutting machine including burner means for cutting completely across the casting as the casting is moving whereby a portion of the casting will be cut oil from the remainder of the casting, said flame cutting machine being provided with releasable holding means for engaging the portion to be out off before completion of the cutting operation, including pressure medium means for operating said holding means, said holding means including two clamp jaws adapted to be disposed on both sides of an individual casting, said jaws being connected to said flame cutting machine for articulation in a lever-like manner, and a piston associated with one end of each clamp jaw for disposing the other end of each clamp jaw against a casting.
  • An apparatus including twist preventing means at said other end of each clamp jaw for preventing the casting from twisting.
  • each clamp jaw is forked, at least two pins being connected to each forked end whereby the casting is engaged at at least four points to comprise said twist preventing means.
  • An apparatus including a corn mon cylinder, said pistons being slidably mounted in said common cylinder, and said pressure medium means being supplied to said cylinder between said pistons.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Specific Conveyance Elements (AREA)
  • Shearing Machines (AREA)

Description

Feb. 24, 1970 G. KALKHOF 3,497,195
APPARATUS FOR A CONTINUOUS CASTING FLAME CUTTING MACHINE Filed Jan. 17, 196'? I v I i w 78 United States Patent 68,607 Int. Cl. B23k 7/04, 7/10; B22d 11/12 US. Cl. 266-23 Claims ABSTRACT OF THE DISCLOSURE An apparatus for cutting a continuous casting includes a flame cutting machine adapted to move synchronously with the casting, the flame cutting machine has burners for cutting the casting as it moves, releasable holding means are provided for the flame cutting machine to engage a portion of the casting to be cut off before completion of the cutting operation.
The present invention is concerned with an apparatus for a continuous casting flame cutting machine adapted to move synchronously with the casting, particularly for slabs, in which the cut is made from two sides by two burners moving towards one another.
Flame cutting machines of the above kind are usually adapted to travel on rails in the direction of casting. synchronisation of the longitudinal advance of the flame cutting machine with the speed of the casting is eifected during the cutting operation in a simple manner by clamping the flame cutting machine to the casting, which is guided on a roller table. After completion of the cutting, this clamping connection is released and the flame cutting machine travels in the reverse direction for a distance corresponding to a casting length, in order to commence a new cut. The separated casting is carried forward by the roller table and transported away for further use. In
order to prevent the casting from tipping over between V the rollers of the roller table and, consequently, interrupting the transport operation in an undesirable manner, as well as damaging the flame cutting machine, the length of the individual casting must correspond to at least twice the distance between the rollers of the roller table.
It is a disadvantage that the head portion of the casting is useless and must be removed before the actual cutting up of the continuous casting into the individual castings is commenced. However, this head portion is relatively short in comparison with the individual castings, so that the above-mentioned danger of tipping over and consequent damage to the burner exists here.
The problem with which the present invention is concerned is to obviate the above disadvantages. In order to solve this problem, it is essentially proposed, according to the present invention, that the flame cutting machine should be provided with a releasable holding device for the portion of the casting to be cut off, this device engaging with the portion to be cut off before completion of the cut.
The head portion of the casting can now be gripped by the holding device directly before or shortly after the commencement of the cutting operation, so that a turning or tipping of the head portion is avoided in an advantageous manner. After completion of the cutting operation, the head portion or the individual castings can be transported away by the holding device for further use.
In principle, the construction of the holding device may be of any desired type. According to the present invention, however, it is preferred to use a clamping device operated by a pressure medium. A clamping device of this See type, for example, one operated pneumatically, can be installed in an advantageous manner without particular expense, since compressed air is certainly available in metallurgical Works.
More particularly, it is proposed, according to the present invention, that the holding device should comprise two clamp jaws disposed on both sides of the individual casting and articulated like levers, on the flame cutting machine and that one end of each of the clamp jaws should be associated with the individual casting and the other end with a piston to which pressure is applied.
Furthermore, it is expedient for the ends of the clamp jaws associated with the individual casting to be constructed in such a manner that a twisting of the individual casting is impossible.
The clamp jaws may, for example, have comparatively large dimensions in the casting direction. For reasons of weight, however, it is preferred that the ends of the clamp jaws associated with the individual casting should, in each case, be forked and that at the end of each of the arms of the 'fork there should be secured a pin which, during the holding of the individual casting which has been cut off, engages with the individual casting, so that the latter is held at at least four points.
The two pistons to which pressure is applied may each be disposed in a separate cylinder independently of one another. Preferably, however, the two pistons to which pressure is applied should be slidable in a common cylinder and the pressure medium should be applied to the cylinder between the two pistons. This form of construction is preferred because of its simplicity and the little space which it requires.
For a better understanding of the present invention, one embodiment thereof will now be described with reference to the accompanying drawings, in which:
FIGURE 1 shows diagrammatically a continuous casting flame cutting machine in elevation; and
FIGURE 2 is a diagrammatic view in the direction of the arrow A in FIGURE 1.
As can be seen from FIGURES 1 and 2, a continuous casting 10 is guided on a roller table comprising rollers 11. A continuous casting flame cutting machine 12 is disposed for travelling on rails 13 in the direction of the casting 10 and is fastened to the latter by means of a clamping device 14 operated by a pressure medium, so that the movement of the flame cutting machine 12 takes place synchronously with the movement of the continuous casting 10. The flame cutting machine 12 has two cutting torches 15, 16 which travel towards one another as far as a determined point during the cutting operation, the casting thereby being cut into from both sides. One torch then moves in the reverse direction, while the other completes the cut. The cutting points are designated by 17 in FIGURE 1. The distance between two cutting points 17, which constitutes the length of an individual casting, must correspond to at least twice the distance between two rollers 11 of the roller table in order to ensure the satisfactory further transport of the individual casting cut off.
The head portion 18 of the continuous casting 10, which is useless, has a comparatively short length compared with the individual castings. When the head piece 18- is cut off, there is, consequently, on the one hand, a danger that this piece will drop, so that, at the same time, the cut gaps will be narrowed, while, on the other hand, the head portion 18 may be tipped over sideways because the two cut gaps meet one another in an eccentric position, so that one side of the head portion 18 is slightly raised and may damage the cutting torch in question.
In order to eliminate these dangers, a holding device 19 is provided on the flame cutting machine, this device holding the head portion 18 approximately at the commencement of the cutting operation and releasing it only on completion of the cut. The separated head portion 18' then falls into a container 20 held in readiness.
The clamping device 19 comprises two jaws 21 articulated at the side of the flame cutting machine 12 in the manner of levers. The ends of these jaws 21, which are associated with the head portion 18 or with any individual casting, are forked, a pin 22 being fastened to each arm of the fork. The pins 22 engage with the head portion or individual casting and prevent it from dropping or twisting. The other ends of the jaw 21 are each connected to a respective piston 23. The two pistons are slidably mounted in a common pressure cylinder 24. The pressure medium is supplied between the two pistons 23 in a manner which is not illustrated. The pistons 23 and the associated ends of the jaws 21 are thereby moved outwards and the pins 22 are pressed firmly against the head portion 18.
The clamping device 14 previously mentioned may, of course, also be of similar construction to the holding device 19. The two devices 14, 19 are, in this case, advantageously connected to the same pressure medium system.
What we claim is:
1. An apparatus for cutting a continuous casting comprising means for moving the casting in a substantially horizontal direction, a flame cutting machine adapted to move synchronously with the casting, said flame cutting machine including burner means for cutting completely across the casting as the casting is moving whereby a portion of the casting will be cut off from the remainder of the casting, said flame cutting machine being provided with releasable holding and removal means for engaging the portion to be cut off before completion of the cutting operation and removing the cut oil portion after completion of the cutting operation, and said holding and removal means having a plurality of contact points disposed longitudinally of the path of motion of the portion to be cut 01f for engaging the portion to be cut off and preventing it from dropping and twisting during engagement thereof.
2. An apparatus according to claim 1, including pressure medium means for operating said holding means.
3. An apparatus for cutting a continuous casting comprising means for moving the casting, a flame cutting machine adapted to move synchronously with the casting, said flame cutting machine including burner means for cutting completely across the casting as the casting is moving whereby a portion of the casting will be cut oil from the remainder of the casting, said flame cutting machine being provided with releasable holding means for engaging the portion to be out off before completion of the cutting operation, including pressure medium means for operating said holding means, said holding means including two clamp jaws adapted to be disposed on both sides of an individual casting, said jaws being connected to said flame cutting machine for articulation in a lever-like manner, and a piston associated with one end of each clamp jaw for disposing the other end of each clamp jaw against a casting.
4. An apparatus according to claim 3, including twist preventing means at said other end of each clamp jaw for preventing the casting from twisting.
5. An apparatus according to claim 4, wherein said other end of each clamp jaw is forked, at least two pins being connected to each forked end whereby the casting is engaged at at least four points to comprise said twist preventing means.
6. An apparatus according to claim 3, including a corn mon cylinder, said pistons being slidably mounted in said common cylinder, and said pressure medium means being supplied to said cylinder between said pistons.
References Cited UNITED STATES PATENTS 3,443,805 5/ 1969 Greenberger. 2,163,697 6/1939 Strawn et al. 83-319 X 2,287,833 6/1942 Ridgway 83-319 X 3,107,404 10/1963 Armand et al. 164263 X 3,291,470 12/1966 Lotz.
FOREIGN PATENTS 184,308 1/1956 Austria.
I. SPENCER OVERHOLSER, Primary Examiner R. SPENCER ANNEAR, Assistant Examiner US. Cl. X.R. 83-3l9; 164263
US609843A 1966-03-03 1967-01-17 Apparatus for a continuous casting flame cutting machine Expired - Lifetime US3497195A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3558117A (en) * 1967-12-27 1971-01-26 Schloemann Ag Gas cutting device for severing horizontally delivered material
US3940123A (en) * 1973-10-18 1976-02-24 Messer Griesheim Gmbh Cutting machine clamping device
US4208039A (en) * 1977-03-11 1980-06-17 Thyssen Aktiengesellschaft Vormals August Thyssen-Hutte Device for dividing a strand into slabs
US4224852A (en) * 1977-11-22 1980-09-30 Voest-Alpine Aktiengesellschaft Shearing machine to be used for a run-out roller table of a continuous casting plant
US4261552A (en) * 1978-06-09 1981-04-14 Nippon Steel Corporation Cutting device for continuous casters

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8915662D0 (en) * 1989-07-07 1989-08-23 Walters Ian D Surface covering material
CN110860667A (en) * 2019-11-06 2020-03-06 安徽省繁昌县皖南阀门铸造有限公司 Low in labor strength's dross removal mechanism

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2163697A (en) * 1936-04-17 1939-06-27 Line Material Co Lightning arrester and method of assembling
US2287833A (en) * 1939-01-03 1942-06-30 Ingersoll Milling Machine Co Cutoff machine
AT184308B (en) * 1951-03-16 1956-01-10 Boehler & Co Ag Geb Apparatus and method for cutting the cast strand to length
US3107404A (en) * 1960-04-26 1963-10-22 Electro Chimie Metal Cutting of continuous cast bars
US3291470A (en) * 1964-12-03 1966-12-13 Messer Griesheim Gmbh Cutting device for continuous casting installations
US3443805A (en) * 1965-12-09 1969-05-13 United Eng Foundry Co Severing station for moving workpieces

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE913609C (en) * 1950-12-05 1954-06-18 Adolf Messer G M B H Flame cutting machine for cutting off billets, which is moved with the cast strand during continuous casting

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2163697A (en) * 1936-04-17 1939-06-27 Line Material Co Lightning arrester and method of assembling
US2287833A (en) * 1939-01-03 1942-06-30 Ingersoll Milling Machine Co Cutoff machine
AT184308B (en) * 1951-03-16 1956-01-10 Boehler & Co Ag Geb Apparatus and method for cutting the cast strand to length
US3107404A (en) * 1960-04-26 1963-10-22 Electro Chimie Metal Cutting of continuous cast bars
US3291470A (en) * 1964-12-03 1966-12-13 Messer Griesheim Gmbh Cutting device for continuous casting installations
US3443805A (en) * 1965-12-09 1969-05-13 United Eng Foundry Co Severing station for moving workpieces

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3558117A (en) * 1967-12-27 1971-01-26 Schloemann Ag Gas cutting device for severing horizontally delivered material
US3940123A (en) * 1973-10-18 1976-02-24 Messer Griesheim Gmbh Cutting machine clamping device
US4208039A (en) * 1977-03-11 1980-06-17 Thyssen Aktiengesellschaft Vormals August Thyssen-Hutte Device for dividing a strand into slabs
US4224852A (en) * 1977-11-22 1980-09-30 Voest-Alpine Aktiengesellschaft Shearing machine to be used for a run-out roller table of a continuous casting plant
US4261552A (en) * 1978-06-09 1981-04-14 Nippon Steel Corporation Cutting device for continuous casters

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FR1516373A (en) 1968-03-08
DE1508894B1 (en) 1971-01-28
GB1141231A (en) 1969-01-29

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