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EP0011650A1 - Appareil d'alimentation de fondant en poudre pour coulee continue - Google Patents

Appareil d'alimentation de fondant en poudre pour coulee continue Download PDF

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Publication number
EP0011650A1
EP0011650A1 EP79900271A EP79900271A EP0011650A1 EP 0011650 A1 EP0011650 A1 EP 0011650A1 EP 79900271 A EP79900271 A EP 79900271A EP 79900271 A EP79900271 A EP 79900271A EP 0011650 A1 EP0011650 A1 EP 0011650A1
Authority
EP
European Patent Office
Prior art keywords
screw conveyor
flux powder
continuous casting
mould
screw
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.)
Granted
Application number
EP79900271A
Other languages
German (de)
English (en)
Other versions
EP0011650A4 (fr
EP0011650B1 (fr
Inventor
Shinji Nishida
Takashi Otsuka
Mitsukuni Sato
Satoru Kashimoto
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.)
Shinagawa Refractories Co Ltd
Original Assignee
Shinagawa Refractories Co Ltd
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 Shinagawa Refractories Co Ltd filed Critical Shinagawa Refractories Co Ltd
Publication of EP0011650A1 publication Critical patent/EP0011650A1/fr
Publication of EP0011650A4 publication Critical patent/EP0011650A4/fr
Application granted granted Critical
Publication of EP0011650B1 publication Critical patent/EP0011650B1/fr
Expired legal-status Critical Current

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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
    • B22D11/16—Controlling or regulating processes or operations
    • B22D11/165—Controlling or regulating processes or operations for the supply of casting powder
    • 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
    • B22D11/10—Supplying or treating molten metal
    • B22D11/108—Feeding additives, powders, or the like
    • 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
    • B22D11/10—Supplying or treating molten metal
    • B22D11/11—Treating the molten metal

Definitions

  • This invention relates to an improvement in a flux powder supplying anparatus for continuous casting, and more particularly to a flux powder supplying apparatus in which it is possible to charge and sprinkle an optimum amount of flux powder onto the surface of molten steel continuously and uniformly when pouring for continuous casting.
  • flux powder is sprinkled onto the surface of the molten steel in the mould, with the principal object of providing lubrication and heat retention of the molten steel.
  • flux powder is charged in such a way that the flux powder is placed above a mould, and the operator charges a suitable amount of flux powder while observing the surface of molten steel when pouring, so that the working environment is deteriorated so much because of the high temperature and powdery dust generated from the molten steel, and the flux powder results in being supplied in uneven distribution (i.e. uneven level).
  • the spring feeder is meant a feeder of known construction, in which a spring (coiled) is inserted, almost all over the length, in a flexible hose provided beneath a hopper containing flux powder (material), one end of said spring is directly connected to a motor, the flux powder proceeds following the rotation of said spring operating by means of the rotational, driving force of the motor, and then the flux powder is fed in said flexible hose to be supplied to a discharge port above a mould.
  • Japanese Utility Model Publication No. 106410/77 proposes an automatic supply apparatus of flux powder, in which a supply pipe with internally mounted screw is provided together on the stand and which is driven by means of a motor fixed at the rear of said supply pipe. Since the nozzle opening at the end of the screw makes a circular movement in this apparatus, however, flux powder cannot be sprinkled linearly and uniformly.
  • the apparatus is simple but strong in construction and can perform accurate remote control.
  • the present apparatus is bearing fruit in the field of pulverulent body industry. It is a combination of constructional members as main body, which scarcely causes trouble. It is of strong construction in which a screw conveyor is provided swingably above the mould from the car, and to effect a linear, reciprocating movement of the nozzle opening at the end of said conveyor an arc-shaped guide and a crank mechanism are provided on the car off the mould. And the present apparatus can be easily, automatically operated.
  • the invention relates to a flux powder supplying apparatus for continuous casting, in which a moving car is arranged near a mould for casting, a flux powder supplying apparatus and a screw conveyor are placed on said car, at the end of said screw conveyor there is connected a guide rod mounted on said conveyor to said arc-shaped guide, a crank mechanism is provided connected to said screw conveyor, a nozzle opening is idly fitted at the end portion of the screw conveyor through said guide rod, the screw conveyor and the crank mechanism are respectively connected to motors, and the nozzle opening is reciprocally movable with optional control over the width direction of the mould.
  • the nozzle opening idly fitted at the end of a screw conveyor 11 can be controlled in a linear moving range over width direction of the mould so that flux powder can be uniformly sprinkled in the thickness direction of the mould.
  • the uniform sprinkling function of flux powder in a suitable amount is in such a manner that in the thickness direction of the mould the shape and dimension of said nozzle opening idly fittable at the end of the screw conveyor are formed in mechanism exchangeable in response to the shape and kind of the mould, so that nozzle openings of several shapes and dimensions have been prepared thereby enabling freely to mount a nozzle opening with disired shape and dimension.
  • the principal mechanism for the reciprocating linear motion of said nozzle opening is provided on the car off the mould, and therefore it is shielded from high temperature, powdery dust, the spray of molten steel, etc.
  • the present apparatus is very effective in view of safety and sanitation, or strength and durability of the?-main portions of the apparatus, and further an accurate, quick remote control is possible by means of a separately mountable control board.
  • the invention provides a flux powder supplying apparatus for continuous casting, which is very useful in steel making or the like.
  • a molten steel 2 in a ladle 1 is received at a tundish 3, and the molten steel 2 is poured into a mould 5 through a tundish nozzle 4 mounted beneath the tundish 3.
  • a flux powder 10 is uniformly supplied onto a surface 6 of the molten steel now poured, by means of a flux powder supplying apparatus 7.
  • the flux powder supplying apparatus 7 consists of a flux powder supplying hopper 9 placed on a moving car 8, a motor 12 for screw beneath said hopper 9, and screw conveyors 11 connected directly to said motor 12 for screw (i.e. screw driving motor for screw conveyors), and flux powder 10 is fed within the screw conveyors 11, following the rotation of screw.
  • a guide rod 16 bridged over a screw conveyor 11 is slidably fitted to a guide 15 consisting of an arc-like groove, said guide being provided on the car 8 at the rear side of said screw conveyor 11, and the other end of said guide rod 16 is mounted to the upper portion of a nozzle opening 18 idly fittable at the end of the screw conveyor 11.
  • a bracket member 26 is fixed at the center of the screw conveyor 11, the guide rod 18 is inserted slidably through said bracket member 26 through bearing for example, and the nozzle opening l8 is supported in such a way that it can move reciprocatingly and linearly in the width direction of the mould.
  • the guide 15 and the guide rod 16 engage with each other through sliding members 21 such as ball bearing.
  • the guide 15 is one in which a metallic material is cut with an arc-shaped groove, the dimension and shape of said are-shaped groove are designed in such a manner that it is possible for the nozzle opening 18 to carry out a reciprocal, linear movement, the guide red 16 smoothly slides within said guide 15 by the sliding members 21, said sliding motion produces a swinging movement together with the screw conveyors 11, and it results in that the nozzle openings 18 idly fitted at the ends of the screw conveyors 11 make reciprocal, linear movements simultaneously. That is, it is possible to alter the swinging movements of the screw conveyors 11 themselves connected to a crank mechanism 13 provided on the car 8 by the guides 15, to those of said nozzle openings 18.
  • the swinging motion of a screw conveyor 11 is effected by means of the crank mechanism 13 provided on the car 8, and the motor 14 for crank is connected to said crank mechanism 13.
  • the motor 14 for crank is to make swinging motion of the end of said screw conveyor 11, and it is a motor with nonstage transmission capable of normal and reverse rotations for driving the crank mechanism.
  • crank bolts 20 it is possible to optionally change and control the stroke (the travelling distance of the nozzle opening 18, to the width direction of the mould, by setting the crank bolts 20 at desired positions of a groove 22 bored at a crank shaft 23, in response to the size in the width direction of the mould, and fastening said crank bolts 20 to fix them to the crank shaft 23.
  • a flucrum 17 of the swinging motion in the invention is set correspondingly to the center of the support stand of said flux powder supplying apparatus 7, at the rear portion of said screw conveyor 11.
  • a control board 19 is provided at a suitable position, said board being capable of controlling the motors 12 for screw and the motor 14 for crank and remotely controlling the present apparatus.
  • Fig. 3 and Fig. 4 show the mechanism of guide, a guide rod 16 is inserted slidably above the screw conveyor 11, through a bracket member 26, and the upper portion of said nozzing opening 18 and the guide rod 16 are fixed at the end of said screw conveyor 11 whereby the nozzle opening 18 is idly supported.
  • the other end of the suide rod 16 is inserted, to be slidable, into the guide 15 forming an arc-like groove, through the sliding members 21 such as ball bearing, as shown in Fig. 3 for example, and the most rear portion of the screw conveyor 11 is connected to a motor 12 for screw thereby to rotate the screw while feeding the flux powder charged from the flux powder supply hopper 9.
  • Fig. 5 is an explanatory view of the construction of said crank mechanism 13 and said screw conveyors 11, and between two pairs of the screw conveyors 11 (a pair or more than three pairs thereof can be arranged according to the operational conditions at the scene of casting) there are provided the crank mechanism 13 and the motor 14 for crank.
  • crank mechanism 13 is of the following construction. That is, a crank rod 24 is connected through a pin 25 to a connecting member 27 fixed to the side face of the screw conveyor 11, and by means of crank bolt 20 the crank shafts 23 and the crank rod 24 are rotatably connected together.
  • Fig. 6 partially shows the crank shafts 23 only, viewed from an arrow a of Fig. 5, and it shows a mechanism capable of controlling, to optional and optimum set value, the stroke of said crank mechanism, in other words the stroke (the distance of reciprocating, linear motion) of the nozzle opening 18 idly fitted at the end of the screw conveyor 11.
  • crank bolt 20 In order to set said stroke at the minimum stroke (MI) it is all right to fix the crank bolt 20 at the position A as shown, in the groove 22 cut at the crank shaft 23, and if the setting to the maximum stroke (MX) is desired to the contrary, the crank bolt 20 may preferably fixed at the position B, for example by means of nut.
  • the ranges of the maximum stroke (MX) and the minimum stroke (MI) are determined by setting the optional stroke between point A and point B by predetermining the length of the groove 22.
  • the nozzle openings 18 for which shape and dimension are previously set, depending on the kind and size of the mould 5; by controlling the number of rotation of the motors 12 for screw and the motor 14 for crank it is possible to control the supplying amount of flux powder and the reciprocating, linear motion stroke of the nozzle opening in a wide range; and it is possible to sprinkle a suitable amount of flux powder to the surface of molten steel in the mould, uniformly, efficiently, accurately and as desired.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)

Abstract

Ameliorations apportees a un appareil d'alimentation en poudre pour coulee continue comprenant un dispositif d'alimentation de poudre (7) et un transporteur a vis (11) portes par un chariot (8) dispose pres d'un moule de fonderie, une tige de guidage (16) montee sur le transporteur a vis (11), ladite tige de guidage fonctionnant en association avec un guide en forme d'arc (15) situe sur la partie arriere du transporteur a vis 11), un mecanisme de volebrequin (13) rattache au transporteur a vis (11), une buse (18) montee libre sur l'extremite avant du transporteur a vis (11) par l'intermediaire de la tige de guidage (16), et des moteurs (12, 14) connectes au transporteur a vis (11) et au mecanisme de volebrequin (13), respectivement. Cette disposition de l'appareil d'alimentation de poudre pour coulee continue permet de regler la buse (18) dans le sens de la largeur du moule. La quantite optimum de poudre peut ainsi etre chargee uniformement etalee sur une surface d'acier fondu pendant la coulee continue.
EP19790900271 1978-03-09 1979-10-09 Appareil d'alimentation de fondant en poudre pour coulee continue Expired EP0011650B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP29077/78 1978-03-09
JP2907778U JPS5724433Y2 (fr) 1978-03-09 1978-03-09

Publications (3)

Publication Number Publication Date
EP0011650A1 true EP0011650A1 (fr) 1980-06-11
EP0011650A4 EP0011650A4 (fr) 1980-07-17
EP0011650B1 EP0011650B1 (fr) 1983-11-30

Family

ID=12266273

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19790900271 Expired EP0011650B1 (fr) 1978-03-09 1979-10-09 Appareil d'alimentation de fondant en poudre pour coulee continue

Country Status (4)

Country Link
EP (1) EP0011650B1 (fr)
JP (1) JPS5724433Y2 (fr)
DE (1) DE2966437D1 (fr)
WO (1) WO1979000730A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0192866A1 (fr) * 1985-02-27 1986-09-03 Kawasaki Jukogyo Kabushiki Kaisha Appareil pour une facilité de coulée continue
CN100457325C (zh) * 2007-06-16 2009-02-04 姜虹 大断面结晶器自动加渣装置
CN102699296A (zh) * 2012-05-02 2012-10-03 武汉科技大学 一种用于连铸结晶器的自动加渣机

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2336200A1 (fr) * 1975-11-27 1977-07-22 Concast Ag Dispositif pour alimenter une lingotiere de coulee continue d'acier en fondant en poudre
FR2407773A1 (fr) * 1977-11-04 1979-06-01 Concast Ag Dispositif pour alimenter le bain d'acier d'une lingotiere de coulee continue en fondant en poudre

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3411566A (en) * 1967-02-20 1968-11-19 Astrov Evgeny Ivanovitch Device for supplying powdered material into a mold of a continuous casting machine
CH559075A5 (fr) * 1973-05-30 1975-02-28 Concast Ag

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2336200A1 (fr) * 1975-11-27 1977-07-22 Concast Ag Dispositif pour alimenter une lingotiere de coulee continue d'acier en fondant en poudre
FR2407773A1 (fr) * 1977-11-04 1979-06-01 Concast Ag Dispositif pour alimenter le bain d'acier d'une lingotiere de coulee continue en fondant en poudre

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO7900730A1 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0192866A1 (fr) * 1985-02-27 1986-09-03 Kawasaki Jukogyo Kabushiki Kaisha Appareil pour une facilité de coulée continue
US4632173A (en) * 1985-02-27 1986-12-30 Kawasaki Jukogyo Kabushiki Kaisha Labor saving apparatus for continuous casting facility
CN100457325C (zh) * 2007-06-16 2009-02-04 姜虹 大断面结晶器自动加渣装置
CN102699296A (zh) * 2012-05-02 2012-10-03 武汉科技大学 一种用于连铸结晶器的自动加渣机
CN102699296B (zh) * 2012-05-02 2014-04-16 武汉科技大学 一种用于连铸结晶器的自动加渣机

Also Published As

Publication number Publication date
JPS5724433Y2 (fr) 1982-05-27
EP0011650A4 (fr) 1980-07-17
DE2966437D1 (en) 1984-01-05
WO1979000730A1 (fr) 1979-10-04
JPS54133124U (fr) 1979-09-14
EP0011650B1 (fr) 1983-11-30

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