US3802407A - Apparatus for shooting a projectile shaped additive into molten steel - Google Patents

Apparatus for shooting a projectile shaped additive into molten steel Download PDF

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Publication number
US3802407A
US3802407A US00254045A US25404572A US3802407A US 3802407 A US3802407 A US 3802407A US 00254045 A US00254045 A US 00254045A US 25404572 A US25404572 A US 25404572A US 3802407 A US3802407 A US 3802407A
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Prior art keywords
addition material
rotary
pressure gas
bodies
gas
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Expired - Lifetime
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US00254045A
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English (en)
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M Imazu
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41B—WEAPONS FOR PROJECTING MISSILES WITHOUT USE OF EXPLOSIVE OR COMBUSTIBLE PROPELLANT CHARGE; WEAPONS NOT OTHERWISE PROVIDED FOR
    • F41B11/00—Compressed-gas guns, e.g. air guns; Steam guns
    • F41B11/50—Magazines for compressed-gas guns; Arrangements for feeding or loading projectiles from magazines
    • F41B11/57—Electronic or electric systems for feeding or loading
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
    • F41A9/00—Feeding or loading of ammunition; Magazines; Guiding means for the extracting of cartridges
    • F41A9/01—Feeding of unbelted ammunition
    • F41A9/24—Feeding of unbelted ammunition using a movable magazine or clip as feeding element
    • F41A9/26—Feeding of unbelted ammunition using a movable magazine or clip as feeding element using a revolving drum magazine
    • F41A9/27—Feeding of unbelted ammunition using a movable magazine or clip as feeding element using a revolving drum magazine in revolver-type guns
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
    • F41A9/00—Feeding or loading of ammunition; Magazines; Guiding means for the extracting of cartridges
    • F41A9/38—Loading arrangements, i.e. for bringing the ammunition into the firing position
    • F41A9/46—Loading arrangements, i.e. for bringing the ammunition into the firing position the cartridge chamber being formed by two complementary elements, movable one relative to the other for loading
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41B—WEAPONS FOR PROJECTING MISSILES WITHOUT USE OF EXPLOSIVE OR COMBUSTIBLE PROPELLANT CHARGE; WEAPONS NOT OTHERWISE PROVIDED FOR
    • F41B11/00—Compressed-gas guns, e.g. air guns; Steam guns

Definitions

  • the apparatus has two hoppers for holding the bullet-shaped additive materials and delivering them successively.
  • a pair of rotary feeders having spaced elongated grooves receive the materials supplied from the hoppers and are rotated intermittently a distance corresponding to the pitch of the elongated grooves through use of a Geneva gear mechanism.
  • a gas controlling device connected to a source of gas under pressure controls the supply of gas synchronously with the rotating motion of the rotary feeders to supply the gas to a pair of projectile guiding pipes which shoot the bullet shaped additive materials into a molten steel bath.
  • addition material such as aluminum and the like is thrown into molten metal for making special steel or to carry out deoxidation.
  • the addition material is thrown in after being weighed from the metallurgical standpoint, but when thrown in manually as heretofore, the addition material used never penetrates into the interior of the molten steel due to the specific weight of the addition material, and accordingly, steel having uniform composition throughout can not be manufactured, that is, mottles might be created in the steel.
  • a part of the addition material thrown in is impeded in its movement into the steel by floating slag and is burnt uselessly, and thereby problems such that the desired object of the addition can not be carried out and the like will remain unsolved.
  • the present invention comprises forming addition material such as aluminum and the like into a bullet-shape and then successively projecting a required quantity of addition material in such bullet shape into molten steel, and particularly provides a device which is operable to synchronize the supply and projecting of addition material to, that is, to shoot a required quantity of addition material into the steel in a short time.
  • the invention also comprises a device which uses pressure gas efficiently as a power source for throwing in the addition material and a device provided with an automatic counting function to control the quantity of addition material thrown in.
  • FIG. 1 is a general side view of the apparatus provided with a gun-barrel for projecting addition material.
  • FIG. 2 is a section on line IIII in FIG. 1.
  • FIG. 3 is a section on line IIIIII in FIG. 1.
  • FIG. 4 is a section on line IVI V in FIG. 2.
  • FIG. 5 is a perspective view of the disassembled essential part of the apparatus.
  • FIG. 6 is a general plan of a modified form of the apparatus according to the invention which is provided with two gun-barrels for throwing in addition material.
  • FIG. 7 is a front view thereof.
  • FIG. 8 is a front view showing the relation of the operating mechanism for performing intermittent motion.-
  • FIG. 9 is a time chart showing the operation of the rotary feeder for taking out the addition material and of the solenoid valve.
  • FIG. 10 is a partial section showing the relationship between the seal plate and the rotary feeder.
  • FIG. 11 is a longitudinally sectioned view showing thehermetic mechanism.
  • FIG. 12 is an enlarged section to show clearly a part of said hermetic mechanism.
  • FIG. 13 is an enlarged section of the seal plate
  • FIG. 14 is a view of the inside of the same.
  • a hopper 2 is provided for receiving bullet-shaped bodies 1 of addition material (hereunder, called the addition material).
  • a rotary feeder 3 is located below said hopper 2 and provided with elongated grooves which are U-shaped in section and are at an equal pitch on the circumference thereof to receive and hold the bodies 1 of addition material.
  • a projectile holding device 5 (hereinafter called the holding portion) is positioned between two end walls 8 and'9 and has a cover portion 10 thereover and sealed to the end walls.
  • a gunbarrel 6 has the rear end mounted in front end wall 8. Front and rear end walls 8 and 9 have a supporting shaft 7 extending therebetween on which the rotary feeder 3 is mounted.
  • Controlling device 12 is attached to the rear end wall 9.
  • the front and rear end walls 8 and 9 are attached to a supporting member 13.
  • the upper portion of the rear end of the gun-barrel 6 abuts the end surface of the cover portion 10 so that the outer part of the bore is aligned with the inner surface of the cover 10.
  • the gun-barrel is also supported on a bracket 14 fixed to the supporting member 13 at a suitable intermediate position and said supporting member 13 is longitudinally slidably mounted on a stand 15.
  • a reaction absorbing device 16 is provided for damping the movement of the supporting member 13 due to the reaction caused by projecting the addition material.
  • the rotary feeder 3 is to be rotated intermittently, and therefore, at one end of the supporting shaft 7 is provided a first Geneva gear mechanism 19 shown in FIG. 2 having a driven wheel 17 having radial grooves equal in number to the elongated grooves 4 of the feeder 3 and a driving wheel 18 having a pin thereon.
  • the rotary feeder 3 is rotated intermittently by one pitch of the elongated grooves upon the rotation of the driving wheel 18.
  • the size of the elongated grooves 4 of'said rotary feeder 3 is to be determined according to that of the addition material 1, but it is most preferable to give the addition material 1 and the rotary feeder 3 sizes so that the addition material 1 when it is in the groove 4 lies within the outer periphery of the rotary feeder 3.
  • Said elongated grooves 4 are successively located at positions below the hopper 2 for receiving bodies 1 of the addition material from the hopper 2 and the rotary feeder 3 is then rotated to move the grooves 4 to the position for projecting the bodies 1, that is, between the gun-barrel 6 and the port 11 for pressure gas.
  • the apparatus is constructed so that all the axes (center lines) of the grooves 4 are squared perfectly on a level and simultaneously and they are locked in their successive positions with the driving wheel 18 of the Geneva gear mechanism.
  • Said gas controlling device 12 acts to supply or cut off the supply of the pressure gas synchronously with the rotation of the rotary feeder 3.
  • One embodiment of said gas controlling device 12 is provided with a rotary valve 21 in the form of a disc in which are disposed a plurality of vent holes 20 equal in number to the number of elongated grooves 4 in said rotary feeder 3 and on a common circle and which disc is rotated intermittently by a second Geneva gear mechanism 19.
  • the driving wheels 18 of the respective Geneva gear mechanisms 19 are rotated interlockedly by a common driving source and reduction gear mechanism (not shown) to carry out the rotation and stoppage of the rotary valve 21 synchronously with said rotary feeder 3.
  • the gas passage 11 is shut off, and when the rotary feeder 3 is stopped after a rotation of one pitch, a vent hole 20 of the rotary valve 21 is aligned with the port 11 in the rear side wall 9 and the pressure gas is directed against the rear end surface of the bullet-shaped body 1 of addition material.
  • FIG. 6 through FIG. 8 show an improved apparatus provided with 2 gun-barrels to project the addition material more efficiently and also for counting the number of bodies 1 of addition material to be projected.
  • Rotary feeders 3 and 3a like that of FIGS. 1-5, juxtaposed on the same level are rotated intermittently in opposite directions by a motor 26 and a stepless reduction gear through a intermittent transmission 27 such as a Geneva gear mechanism and the like.
  • a motor 26 and a stepless reduction gear through a intermittent transmission 27 such as a Geneva gear mechanism and the like.
  • supply pipes 28 and 28a for pressure gas and the supply and shut off of gas is controlled by solenoid valves 29 and 29a.
  • a reflector and an opposed receiver A and B for a photoelectric relay means are located near the front ends of the gun-barrels 6 and 6a, and the bodies of addition material projected from both gun-barrels 6 and 6a are counted as they pass between the reflector and receiver A and B.
  • bodies of addition material are projected simultaneously from both gun-barrels 6 and 6a, only one is counted by said reflector and receiver A and B notwithstanding that two bodies of addition material have been projected.
  • an alternate rotating mechanism is provided within the intermittent transmission gear 27.
  • a driving shaft 30 has a lock disc 31 mounted integrally thereon and also at the end of a driving arm 32 fixed on said driving shaft 30 is provided a driving pin 33.
  • Driven wheels 34 and 34a are disposed facing each other, with said lock disc 31 therebetween, and have arc-shaped surface 35 and 35a thereon against which the outer periphery of the lock disc 31 is closely fitted.
  • Notches 36, 36a in which the driving pin is fittable are formed at equal intervals around wheels 34 and 34a.
  • the driving shaft 30 is rotated counterclockwise, initially the driven wheel 34 is rotated one pitch, and then after a time interval the driven wheel 34a is rotated one pitch, such intermittent rotating operation being repeated alternately. That is, the shafts 44 and 45 connected to the rotary feeders 3 and 3a are driven to rotate by the aforesaid rotation, so that thereby the respective elongated grooves 4 and 4a of the rotary feeders 3 and 3a are alternately brought into the projecting positions.
  • the solenoid valves 29 and 290 are actuated alternately to project the bodies of addition material from the gun-barrels 6 and 6a alternately.
  • FIG. 9 is a diagram for illustrating the operation of the rotary feeders 3 and 3a.
  • a time T elapses from the time when the mechanism is in the condition shown in FIG. 8, thereafter the rotary feeder is rotated during a time T one pitch thereof and the solenoid valve 27 is actuated during the idle time T to project a body of the addition material located in the elongated groove 4 positioned in the projecting position of the rotary feeder 3.
  • FIGS. 10 through 14 illustrate a sealing mechanism for effectively sealing the pressure gas serving as the power source for projecting the bodies of addition material.
  • a seal plate 46 is placed against the outside surface of feeders 3 and 3a and the elongated grooves 4 and 4a of the rotary feeders 3 and 3a are sealed perfectly as they pass the seal plate 46 to prevent the pressure gas from leaking laterally around the rotary feeders. Substantially all the gas supplied acts on the rear end surface of the body 1 of addition material.
  • Said seal plate 46 is clamped on the upper portion of a stand 47 by the bolt 49 extending through the keeper plate 48.
  • Seal covers 50 are located at both ends of the elongated grooves 4 sealed with said seal plate 46. As shown in FIG.
  • a supporting plate 51 carrying the pressure gas supply pipe 28 is provided at one end of the rotory feeder and a supporting plate 52 carrying the guiding pipe for the bodies of addition material, that is, the gun-barrel 6 is provided at the other end. These elements are at the projecting position.
  • a seal ring 53 is pressed against each seal cover 50 by coil springs 54.
  • One seal ring 53 and the construction near thereto are shown in FIG. 12 and as is apparent from the drawing, the front surface which contacts the seal cover 50 is smaller than the rear surface thereof contacted by the coil spring 54.
  • an O-ring 55 is fitted in a groove on the periphery of the seal ring 53.
  • the power applied to the seal ring 53 by the coil spring 54 does not act on the wider portion of the seal cover 50 and thereby an increase of the rotational resistance of the rotary feeder 3 can be prevented.
  • pressure is applied by the gas supplied from the pressure gas supply pipe at the time when the addition material is projected, a stronger force than that on the rear surface of said seal ring 53 is applied on the front surface thereof and the front surface is pressed against the seal cover 50, and because one end of the seal ring 53 is narrower as above described the pressure never exerts an unfavourable effect on the rotation of the rotary feeder 3.
  • FIG. 13 is shown the cross sectional form of the seal plate 46, and as is apparent from the drawing, it is constructed with a metallic base plate 56 and a flexible member 57 thereon.
  • a recessed portion 60 is formed in the central portion and strip contacting portions 59 on both ends thereof, and also at the upper and lower sides of the recessed portion 60 are formed projecting edges 61 respectively.
  • the projected edges 61 are slanted inward, and usually that is, except for the time when the bodies of addition material are being projected said contacting portions 59 and the edges 61 lightly contact the exterior circumferential surface of the rotary feeder 3. And when the bodies of addition material are projected edges 61 are pressed outward by the pressure gas supplied and they contact the exterior circumferential end edge portions of the elongated groove 4 of the rotary feeder 3 and prevent the gas from leaking.
  • An apparatus for projecting bullet-shaped bodies of addition material into molten metal comprising two hoppers for holding the bullet-shaped bodies of addition material and successively delivering the bodies, two rotary feeders, each having spaced elongated grooves extending longitudinally on the peripheral surface thereof for receiving said bodies of addition material supplied from the respective hoppers, a gas controlling device mounted adjacent one end of each rotary feeder and connected to a source of pressure gas and having means for directing pressure gas along a groove positioned at a projecting position of each rotary feeder spaced along the periphery of the feeder from the hopper, a projectile guiding pipe at the other end of each of said rotary feeders aligned with said pressure gas directing means for shooting said bodies of addition material during the flow of pressure gas, and means coupled to said rotary feeders for intermittently rotating each of said rotary feeders an amount corresponding to one pitch of the elongated grooves from said hopper to said projecting position, said means comprising an intermittent transmission mechanism, a Geneva gear coupled to each of said rotary

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
US00254045A 1971-05-26 1972-05-17 Apparatus for shooting a projectile shaped additive into molten steel Expired - Lifetime US3802407A (en)

Applications Claiming Priority (1)

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JP46036030A JPS4949284B1 (xx) 1971-05-26 1971-05-26

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Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993025861A1 (en) * 1992-06-11 1993-12-23 The Walt Disney Company Launcher for launching multiple fireworks projectiles
US5450839A (en) * 1992-09-23 1995-09-19 Nicolaevich; Isakov S. Pneumatic launcher
US5739462A (en) * 1995-06-27 1998-04-14 The Walt Disney Company Method and apparatus for creating pyrotechnic effects
US5878734A (en) * 1995-05-15 1999-03-09 Johnson Research & Development Company, Inc. Multiple barrel compressed air gun
US6544314B2 (en) * 2000-03-17 2003-04-08 Specialty Minerals (Michigan) Inc. Process and apparatus for automatically controlling slag foaming
US6832604B1 (en) * 2002-01-22 2004-12-21 Paul Thompson Pneumatic delivery system for projectiles
US20050115548A1 (en) * 2003-12-01 2005-06-02 Charles Wilson A Mobile Device to Launch a Golf Ball Pneumatically and Play Golf [Robogolfer]
WO2005118182A1 (de) * 2004-05-26 2005-12-15 Voest-Alpine Industrieanlagenbau Gmbh & Co Stranggiessanlage mit mindestens einem roboter und verfahren zum betrieb einer stranggiessanlage unter einbindung von mindestens einem roboter
US20060032643A1 (en) * 2004-08-12 2006-02-16 Thompson Paul D Jet blast firefighting system
US20060243264A1 (en) * 1996-01-16 2006-11-02 Gardner William Jr Pneumatically operated projectile launching device
US20060254572A1 (en) * 2005-05-13 2006-11-16 Hall David L Paintball system
CZ297558B6 (cs) * 2005-08-12 2007-02-07 Mittal Steel Ostrava A. S. Zarízení pro zasypávání prísad do licí pánve
US20090056193A1 (en) * 2007-08-27 2009-03-05 Croisetiere Leo R Bait launcher
US20090235909A1 (en) * 2008-03-20 2009-09-24 Yao-Gwo Gan Paint ball gun with rotatable ball receiving member
US12076786B2 (en) 2019-07-03 2024-09-03 Refractory Intellectual Property Gmbh & Co. Kg Device for manipulating preferably a casting tube in a changing device at the spout of a metallurgical vessel

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1217553A (en) * 1916-05-10 1917-02-27 Norman L Beatty Rapid-fire toy gun.
US2061341A (en) * 1933-10-12 1936-11-17 Eric Von Latscher Latka Slug-shooting attachment for machine guns
US2525082A (en) * 1947-10-20 1950-10-10 Wilbur G Sherman Pneumatic bottle shooting gun
US2837076A (en) * 1957-04-01 1958-06-03 Chicago Dynamic Ind Inc Simulated pneumatically operated machine gun
US2893716A (en) * 1958-01-14 1959-07-07 Inland Steel Co Gun nozzle for adding lead pellets to liquid steel
US3337138A (en) * 1964-01-20 1967-08-22 Brown Fintube Co Apparatus for discharging particulate material
US3411827A (en) * 1966-03-18 1968-11-19 Tobacco Res & Dev I Ltd Mechanism for feeding articles into pneumatic pipelines
US3503300A (en) * 1967-09-01 1970-03-31 Trw Inc High firing rate hypervelocity gun and ammunition therefor
US3695246A (en) * 1971-06-10 1972-10-03 Us Navy Pneumatic machine gun with photo cell interrupted circuit

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1217553A (en) * 1916-05-10 1917-02-27 Norman L Beatty Rapid-fire toy gun.
US2061341A (en) * 1933-10-12 1936-11-17 Eric Von Latscher Latka Slug-shooting attachment for machine guns
US2525082A (en) * 1947-10-20 1950-10-10 Wilbur G Sherman Pneumatic bottle shooting gun
US2837076A (en) * 1957-04-01 1958-06-03 Chicago Dynamic Ind Inc Simulated pneumatically operated machine gun
US2893716A (en) * 1958-01-14 1959-07-07 Inland Steel Co Gun nozzle for adding lead pellets to liquid steel
US3337138A (en) * 1964-01-20 1967-08-22 Brown Fintube Co Apparatus for discharging particulate material
US3411827A (en) * 1966-03-18 1968-11-19 Tobacco Res & Dev I Ltd Mechanism for feeding articles into pneumatic pipelines
US3503300A (en) * 1967-09-01 1970-03-31 Trw Inc High firing rate hypervelocity gun and ammunition therefor
US3695246A (en) * 1971-06-10 1972-10-03 Us Navy Pneumatic machine gun with photo cell interrupted circuit

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993025861A1 (en) * 1992-06-11 1993-12-23 The Walt Disney Company Launcher for launching multiple fireworks projectiles
US5282455A (en) * 1992-06-11 1994-02-01 The Walt Disney Company Launcher for launching multiple fireworks projectiles
US5450839A (en) * 1992-09-23 1995-09-19 Nicolaevich; Isakov S. Pneumatic launcher
US5878734A (en) * 1995-05-15 1999-03-09 Johnson Research & Development Company, Inc. Multiple barrel compressed air gun
US5739462A (en) * 1995-06-27 1998-04-14 The Walt Disney Company Method and apparatus for creating pyrotechnic effects
US7946285B2 (en) * 1996-01-16 2011-05-24 Kee Action Sports, Llc Pneumatically operated projectile launching device
US20100101551A1 (en) * 1996-01-16 2010-04-29 Smart Parts, Inc. Pneumatically operated projectile launching device
US7610908B2 (en) * 1996-01-16 2009-11-03 Smart Parts, Inc. Pneumatically operated projectile launching device
US20060243264A1 (en) * 1996-01-16 2006-11-02 Gardner William Jr Pneumatically operated projectile launching device
US6544314B2 (en) * 2000-03-17 2003-04-08 Specialty Minerals (Michigan) Inc. Process and apparatus for automatically controlling slag foaming
US6832604B1 (en) * 2002-01-22 2004-12-21 Paul Thompson Pneumatic delivery system for projectiles
US20050115548A1 (en) * 2003-12-01 2005-06-02 Charles Wilson A Mobile Device to Launch a Golf Ball Pneumatically and Play Golf [Robogolfer]
WO2005118182A1 (de) * 2004-05-26 2005-12-15 Voest-Alpine Industrieanlagenbau Gmbh & Co Stranggiessanlage mit mindestens einem roboter und verfahren zum betrieb einer stranggiessanlage unter einbindung von mindestens einem roboter
US20060032643A1 (en) * 2004-08-12 2006-02-16 Thompson Paul D Jet blast firefighting system
US20060254572A1 (en) * 2005-05-13 2006-11-16 Hall David L Paintball system
US8584660B2 (en) * 2005-05-13 2013-11-19 David L. Hall Paintball system
US20120180771A1 (en) * 2005-05-13 2012-07-19 Hall David L Paintball system
US8100119B2 (en) * 2005-05-13 2012-01-24 Hall David L Paintball system
CZ297558B6 (cs) * 2005-08-12 2007-02-07 Mittal Steel Ostrava A. S. Zarízení pro zasypávání prísad do licí pánve
US7694452B2 (en) * 2007-08-27 2010-04-13 Croisetiere Leo R Bait launcher
US20090056193A1 (en) * 2007-08-27 2009-03-05 Croisetiere Leo R Bait launcher
US7770570B2 (en) * 2008-03-20 2010-08-10 Sheng-Jen Lian Paint ball gun with rotatable ball receiving member
US20090235909A1 (en) * 2008-03-20 2009-09-24 Yao-Gwo Gan Paint ball gun with rotatable ball receiving member
US12076786B2 (en) 2019-07-03 2024-09-03 Refractory Intellectual Property Gmbh & Co. Kg Device for manipulating preferably a casting tube in a changing device at the spout of a metallurgical vessel

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Publication number Publication date
JPS4949284B1 (xx) 1974-12-26
CA958888A (en) 1974-12-10

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