US1521526A - Nozzle of the ladle for steel casting - Google Patents

Nozzle of the ladle for steel casting Download PDF

Info

Publication number
US1521526A
US1521526A US618982A US61898223A US1521526A US 1521526 A US1521526 A US 1521526A US 618982 A US618982 A US 618982A US 61898223 A US61898223 A US 61898223A US 1521526 A US1521526 A US 1521526A
Authority
US
United States
Prior art keywords
nozzle
ladle
molten steel
steel
annular groove
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
US618982A
Inventor
Godai Ryosaku
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
Priority to US618982A priority Critical patent/US1521526A/en
Application granted granted Critical
Publication of US1521526A publication Critical patent/US1521526A/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
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/50—Pouring-nozzles
    • 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
    • Y10T137/00—Fluid handling
    • Y10T137/9464—Faucets and spouts

Definitions

  • This invention relates to ladles, and it particularly consists of improvements in a nozzle'pro-vided in the ladle bottom.
  • This invention has a particular application in reducing the velocity of molten steel when flowing out through the nozzle, its application not being necessarily limited to steel casting.
  • This invention has for its object to provide a very simple and effective means in reducing the velocity of molten steel flowing out through the nozzle passage of the ladle.
  • annular groove is formed on the nozzle passage in the ladle, whereby the molten steel will run out with a desired reduced velocity when it is discharged from an orifice or lower end of the nozzle.
  • Fig. 1 is a vertical sectional view of a ladle which is provided with a nozzle formed in accordance with this invention and associated with its stopper;
  • Fig. 2 is a fragmentary sectional view, in an enlarged scale, of the nozzle and an end port-ion of the stopper.
  • the ladle has its body A lined with a suitable refractory material B and at the bottom of the ladle there is provided a nozzle G the passage of which will be controlled by means of a stopper D.
  • annular groove E the bottom of which is preferably rounded as shown,'is formed on the interior surface of the nozzle passage 33, in such a way that the center line YY of the nozzle passage F is perpendicular to a plane in which the annular groove E is laid, and that the said center line passes through the center point of the annular groove
  • the diameter of the annular groove E is made larger than that of the nozzle passage F, so that the nozzle passage which is proper to be strait and to have an uniform cross section is expanded by the annular groove E as shown.
  • the annular groove E is preferably formed in such a position that when the stopper 1) is raised from its seat at the top end of the nozzle'G, the molten steel flowing out through the space G, opened between the stopper and its seat, may run straitly on toward, the annular groove E, as shown with arrow heads.
  • the annular groove E is formed on the upper part of the inside of the nozzle and practically a little below the theoretical level as shown at E, since the molten metal after intersecting at the point H is deflected downward, the amount of deflection being dependent upon the velocity of the flowing molten metal which is due to the height of the molten metal in the ladle.
  • the operation of the ladle provided with a nozzle as thus constructed and arranged according to this invention is as follows
  • the laddle A is filled at first with molten steel as usual after the nozzle passage F has been closed by means of the stopper D.
  • l/Vhen it is desired to pour the molten steel into the mould the stopper D is raised so that a conical space G is opened around the lower end of the stopper D and between the said end and the seat.
  • the moulten steel in the ladle runs out through the conical space G now opened with a Velocity due to the height of the molten steel in the ladle, neglecting the throttling effect caused by the stopper D, and also the skin friction of the stopper and its seat.
  • the molten steel passing through the said conical space G will naturally form a conical. meeting at a point H on the center line YY of the nozzle passage F, the point H being a vertex of an i'nversed cone enclosed by the molten steel.
  • a portion of the molten steel, which has met in the said point H, will vertically flow down along the center line of the nozzle passage, with somewhat reduced velocity.
  • the remaining portion of the molten steel will cross itself at the said point H, then it will rush forward and strike the annular groove E, whereby it is reflected in an op posite direction. Then the molten steel thus reflected will meet again, itself and with the said other portion of the molten steel which is vertically flowing down through the central part of the nozzle passage F, thus the velocity of the flow of molten steel If the reflected molten steel has still enough kinetic energy left in r it to rush forward and strike theo-pposite surface of the nozzle passage-F, it may be reflected again and combine with the col umn of molten steel flowing downvertically whereby resulting in the further reduction 7 of the velocity of the flow of molten steel.
  • an-v nular grooves are added conveniently, and such added grooves have the similar effect of still reducing the velocity of themolten steel for the same reason as the single one has, as. explained above, the kinetic energy intimid of the flowing molten steel being absorbed" by its battering action. against the "annular grooves and alsoagainst itself and we can obtain as slow as we please of the flow vof the molten metal when it comes out from the nozzle at its lowest end which is of the paramount importance in all steel industries.
  • a ladle nozzle provided with "an annw lar groove, the bottom of which is preferably ronnded, whereby the velocity of molten steel is reduced.

Description

R. GODAI NOZZLE 0F THE LADLE FOR STEEL CASTING Filed Feb. 14, 1923 Big. 1
Imwfor R. G-adcul Patented Dec. 30, 1924.
UNITED STAT nYosAKU sonar, or TOKYQ, .zmrnn.
NOZZLE OF THE 'LADLE FOR STEEL CASTENG.
Application filed February 14, 1928. Serial No. 618,982.
exact description of the invention, such as V will enable others skilled in the art to which it appertains to make and use the same.
This invention relates to ladles, and it particularly consists of improvements in a nozzle'pro-vided in the ladle bottom.
This invention has a particular application in reducing the velocity of molten steel when flowing out through the nozzle, its application not being necessarily limited to steel casting.
For the purpose of adjusting the flow of molten steel running out of the ladle nozzle, several devices heretofore have been disclosed and practically applied to steel casting. But these are not satisfactory.
This invention has for its object to provide a very simple and effective means in reducing the velocity of molten steel flowing out through the nozzle passage of the ladle.
In carrying this invention into effect, an annular groove is formed on the nozzle passage in the ladle, whereby the molten steel will run out with a desired reduced velocity when it is discharged from an orifice or lower end of the nozzle.
For a better understanding of this invention, the accompanying drawings are referred to, where an embodiment of this invention is shown for the purpose of er:- plaining the principles thereof. In the accompanying drawings, Fig. 1 is a vertical sectional view of a ladle which is provided with a nozzle formed in accordance with this invention and associated with its stopper; Fig. 2 is a fragmentary sectional view, in an enlarged scale, of the nozzle and an end port-ion of the stopper.
Similar references indicate same or similar parts throughout the figures in the accompanying drawings.
Referring to the drawings, the ladle has its body A lined with a suitable refractory material B and at the bottom of the ladle there is provided a nozzle G the passage of which will be controlled by means of a stopper D.
According to this invention, an annular groove E, the bottom of which is preferably rounded as shown,'is formed on the interior surface of the nozzle passage 33, in such a way that the center line YY of the nozzle passage F is perpendicular to a plane in which the annular groove E is laid, and that the said center line passes through the center point of the annular groove The diameter of the annular groove E is made larger than that of the nozzle passage F, so that the nozzle passage which is proper to be strait and to have an uniform cross section is expanded by the annular groove E as shown. The annular groove E is preferably formed in such a position that when the stopper 1) is raised from its seat at the top end of the nozzle'G, the molten steel flowing out through the space G, opened between the stopper and its seat, may run straitly on toward, the annular groove E, as shown with arrow heads. The annular groove E is formed on the upper part of the inside of the nozzle and practically a little below the theoretical level as shown at E, since the molten metal after intersecting at the point H is deflected downward, the amount of deflection being dependent upon the velocity of the flowing molten metal which is due to the height of the molten metal in the ladle.
The operation of the ladle provided with a nozzle as thus constructed and arranged according to this invention is as follows The laddle A is filled at first with molten steel as usual after the nozzle passage F has been closed by means of the stopper D. l/Vhen it is desired to pour the molten steel into the mould the stopper D is raised so that a conical space G is opened around the lower end of the stopper D and between the said end and the seat. Then the moulten steel in the ladle runs out through the conical space G now opened with a Velocity due to the height of the molten steel in the ladle, neglecting the throttling effect caused by the stopper D, and also the skin friction of the stopper and its seat. The molten steel passing through the said conical space G will naturally form a conical. meeting at a point H on the center line YY of the nozzle passage F, the point H being a vertex of an i'nversed cone enclosed by the molten steel.
A portion of the molten steel, which has met in the said point H, will vertically flow down along the center line of the nozzle passage, with somewhat reduced velocity.
i is greatly reduced.
The remaining portion of the molten steel will cross itself at the said point H, then it will rush forward and strike the annular groove E, whereby it is reflected in an op posite direction. Then the molten steel thus reflected will meet again, itself and with the said other portion of the molten steel which is vertically flowing down through the central part of the nozzle passage F, thus the velocity of the flow of molten steel If the reflected molten steel has still enough kinetic energy left in r it to rush forward and strike theo-pposite surface of the nozzle passage-F, it may be reflected again and combine with the col umn of molten steel flowing downvertically whereby resulting in the further reduction 7 of the velocity of the flow of molten steel.
If the single annular groove is found insufiicientin certain cases, one or more an-v nular grooves are added conveniently, and such added grooves have the similar effect of still reducing the velocity of themolten steel for the same reason as the single one has, as. explained above, the kinetic energy amaze of the flowing molten steel being absorbed" by its battering action. against the "annular grooves and alsoagainst itself and we can obtain as slow as we please of the flow vof the molten metal when it comes out from the nozzle at its lowest end which is of the paramount importance in all steel industries.
What I claim as new and desire to secure by Letters Patent of the United States, is
2. A ladle nozzle provided with "an annw lar groove, the bottom of which is preferably ronnded, whereby the velocity of molten steel is reduced.
Dated at Tokyo, Japan," this17th day or January 1923. I i V In testimony whereof I affix my signature; RYOSAKU GODAL. V
US618982A 1923-02-14 1923-02-14 Nozzle of the ladle for steel casting Expired - Lifetime US1521526A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US618982A US1521526A (en) 1923-02-14 1923-02-14 Nozzle of the ladle for steel casting

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US618982A US1521526A (en) 1923-02-14 1923-02-14 Nozzle of the ladle for steel casting

Publications (1)

Publication Number Publication Date
US1521526A true US1521526A (en) 1924-12-30

Family

ID=24479952

Family Applications (1)

Application Number Title Priority Date Filing Date
US618982A Expired - Lifetime US1521526A (en) 1923-02-14 1923-02-14 Nozzle of the ladle for steel casting

Country Status (1)

Country Link
US (1) US1521526A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2852823A (en) * 1945-11-13 1958-09-23 C F Gray Casting apparatus
US2854713A (en) * 1945-11-13 1958-10-07 C F Gray Casting method and apparatus
US3169286A (en) * 1962-02-08 1965-02-16 Pennsylvania Engineering Corp Ladle construction
WO2002081123A2 (en) * 2001-04-04 2002-10-17 Vesuvius Crucible Company Improved regulation of a stream of molten metal
US20040100002A1 (en) * 2002-03-25 2004-05-27 Johan Richaud Regulation of a stream of molten metal

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2852823A (en) * 1945-11-13 1958-09-23 C F Gray Casting apparatus
US2854713A (en) * 1945-11-13 1958-10-07 C F Gray Casting method and apparatus
US3169286A (en) * 1962-02-08 1965-02-16 Pennsylvania Engineering Corp Ladle construction
WO2002081123A2 (en) * 2001-04-04 2002-10-17 Vesuvius Crucible Company Improved regulation of a stream of molten metal
WO2002081123A3 (en) * 2001-04-04 2004-04-15 Vesuvius Crucible Co Improved regulation of a stream of molten metal
US20040100002A1 (en) * 2002-03-25 2004-05-27 Johan Richaud Regulation of a stream of molten metal

Similar Documents

Publication Publication Date Title
US4874471A (en) Device for casting a metal in the pasty phase
US3995682A (en) Continuous casting apparatus with pour tube having lateral slot-like openings
US1521526A (en) Nozzle of the ladle for steel casting
US1944611A (en) Nozzle for pouring molten metal
US3371704A (en) Device for supplying molten metal into a mould of a continuous casting machine
US2810169A (en) Slag-free casting method and a device for the application of this method
US2098937A (en) Ladle for casting fluid metal
US3633654A (en) Pouring nozzle for continuous-casting machine
US1426136A (en) Nozzle
US6102260A (en) Impact pad
CA1052529A (en) Casting method of molten metal
US3168766A (en) Pouring nozzle and stopper
KR20160149637A (en) Ingot molding apparatus
US20150352636A1 (en) Submerged Entry Nozzle
US2826793A (en) Well brick with stopper rod guide
US1747530A (en) Nozzle for metal-pouring ladles
US2944310A (en) Method of continuous casting
KR102218885B1 (en) Continuous casting slag entrapment preventing plug rod
UA86601C2 (en) submerged entry nozzle with plurality of discharge outlets (embodiments)
JP2012510373A (en) Tundish impact pad
JP3639513B2 (en) Open nozzle
US2362097A (en) Ingot casting
US3707439A (en) Device for charging a mold for continuous casting of a hollow ingot
US3114947A (en) Mold shut-off arrangement
US1298036A (en) Teeming ingot-molds.