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
  • B22D11/10—Supplying or treating molten metal
  • B22D11/106—Shielding the molten jet

Definitions

• the present invention relates to an apparatus for injecting a molten metal received in a ladle into a tundish positioned below the molten metal in a continuous mirror manufacturing method of the molten metal.
• molten metal poured from a ladle into the tandis was fixed vertically downward to the bottom wall of the tandis. Then, the mirror piece is formed by passing through the immersion nozzle and mirroring into a mold disposed below the immersion nozzle to form a cylindrical piece, and the mirror piece formed in a small size. By pulling it vertically downward from the lower end of the mold, and then as a single long strip while bending and cooling horizontally. Is performed.
• the sliding nozzle 3 includes an upper nozzle 4 fitted into the opening 2 a of the nozzle receiver, and a fixing plate 5 having an opening 5 a horizontally fixed to a lower end of the upper nozzle 4. , Which is in close contact with the lower surface of the fixed plate 5 and can slide horizontally with respect to the lower surface.
• ⁇ a sliding plate 6 having an opening 6 a, and The lower nozzle 7 is fixed vertically to the lower nozzle 7.
• a tandem for discontinuous construction (hereinafter simply referred to as a tandis) 9 is located below the ladle 1], a top lid 1 having an opening 10a. 0 is attached]? Yotsute thereto, data down de I Tsu push from molten metal ⁇ 1 injected into 9, being scattered outside the data down de I Tsu push from 9 is prevented in the injection early and,
• the long nozzle 8 is attached to the lower end of the lower nozzle 7 by a support device (not shown) installed on a work floor (not shown) of the tandis 9. and, through the opening 1 0 a on ⁇ 1 0 data Ndi Tsu shoe 9 are vertically ⁇ enter the data down de I Tsu push from 9.
• the long nozzle 8 has a sufficient length so that the lower part thereof can be immersed in the molten metal 11 in the tandishes 9 in use.
• the annular inert gas supply pipe 12 is attached to the upper end of the mouth nozzle 8.
• An inert gas such as argon gas is supplied to the connection between the lower nozzle 7 and the long nozzle 8 from the inert gas supply pipe 12 to Air is prevented from entering the nozzle 8 from the connection.
• the molten metal in the ladle 1 is injected into the stand 9 as described below.
• the long nozzle 8 supported by the supporting device is vertically inserted into the opening 10 a of the upper lid 10 of the tandis 9.
• the long nozzle 8 is inserted vertically into the stand 9 through the opening 10a.
• the ladle 1 is moved to a position where the upper end of the long nozzle 8 is directly below the lower nozzle 7 of the sliding nozzle 3 .
• the long nozzle 8 is slightly raised by the support device, and the lower end of the lower nozzle 7 is fitted into the upper end of the mouth nozzle 8.
• the sliding-nozzle 3 is closed by the sliding plate 6.
• the molten metal in the ladle 1 passes through the sliding nozzle 5 and the mouth nozzle 8 and oxidizes in contact with the atmosphere except at the beginning of pouring.
• turbulence does not occur in the molten metal 11 in the tandis 9 and due to the turbulence, the molten slag is formed in the molten metal 11. It is injected into the tandishes 9 without being caught in.
• the long nozzle 8 may be directly fixed to the lower end of the lower nozzle 7.
• the nozzle holder 2 is closed by the metal, remove the ladle 1 from the opening 10a of the top lid 10 of the tundish 9.
• OMPI Oxygen nozzle is inserted from the lower end of the mouth nozzle 8 into the mouth nozzle 8 and the sliding nozzle 3 , and oxygen is supplied from the oxygen nozzle. If the opening 2a of the nozzle receiver 2 closed by the bullion is not opened in this way, the stanchion 9 is melted. Good for metal injection. However, the length of the long nozzle 8 is smaller than the length of the lower nozzle 7 ! ) It is very difficult to melt the ingot with oxygen nozzles because it is long.
• a nozzle receiver 2 having an opening 2a is fixed to the bottom wall la of the ladle 1 in which the molten metal has been received.
• the upper nozzle 4 of the sliding nozzle 3 is fitted.
• the sliding nozzle 3 has an upper nozzle 4 fitted into the opening 2a of the nozzle receiver 2 and a lower end of the upper nozzle 4 horizontally.
• the above-mentioned sliding nozzle 3 melts the molten metal from the ladle 1 into the continuous mirror-making tandem, as in FIG.
• tundish 9 A tundish for continuous production (hereinafter simply referred to as tundish) 9 is located below the ladle 1 1), and an upper lid 10 having an opening 10 & ! ) Is attached. According to this,
• the molten metal 11 injected into the tub 9 is prevented from being scattered outside the tub 9 at the initial stage of the injection, and Molten metal in disk 9
• the temperature of 11 is prevented from dropping.
• Guide tube 1 3 of refractory steel passes through the upper lid 1 0 opening 10a of the motor down de I Tsu push from 9 are ⁇ vertically data Ndi Tsu push from 9.
• the guide cylinder 13 has a sufficient length that its lower part is immersed in the molten metal 11 injected into the stan- dish 9 during use. As shown in the vertical sectional view of the guide tube 13 in FIG.
• the inner surface ⁇ S >> of the inner tube 13 is at a predetermined inclination angle with respect to the axis 0 of the guide tube ⁇ . At “6", it narrows downward and inward, which facilitates the input of the guide cylinder 13 into the opening 10a of the upper lid 10.
• the guide cylinder 13 The inner diameter of the upper end of the nozzle is the same as the inner diameter of the lower nozzle 7 of the sliding nozzle 3. The length of the molten metal flowing out of the lower nozzle 7 is all guided. Injected into cylinder 13.
• the bottom wall la of the ladle 1, vinegar La Lee Di emissions Diagnostics nozzle 3 Ni intends taken enclose good a protection tube 1 4 that has an associated intake.
• the sleeve 17 is mounted on the upper end surface of the inner cylinder 13.
• the inert gas such as argon gas supplied from the inert gas supply pipe 16 flows out of the sliding nozzle 3 and the molten metal flows out of the sliding nozzle 3. Before being injected into the tundish 9 , the molten metal is prevented from being oxidized in contact with the atmosphere.
• the operation of the plate 6 of the sliding nozzle 3 can be performed from outside the rudder 15.
• Molten metal of To ⁇ in 1 in the jar good of the following, are injected into the data down de I Tsu push from the 9.
• the upper part of the guide cylinder 13 is supported by the upper lid 10.
• ⁇ Ide, the ⁇ 1 the protective tube 1 4 of the scan rie Bed 1 7 moves at the position until Ru is nonoxynol on the upper surface of the guide tube I 3.
• the sliding nozzle 3 is closed by the sliding plate 6.
• the training 6 of the sliding nozzle 3 is made to move horizontally until the opening 6a of the sliding nozzle 3 and the opening 5a of the fixing plate 5 overlap.
• the purpose of the present invention is to inject the molten metal from a pan into a continuous mirror-making tandissh, which is resistant to the adhesion of the molten metal and can withstand long-term use. That provide the equipment
• an apparatus for injecting molten metal into a continuous mirror standing circle comprising:
• Apparatus for injecting molten metal received in a ladle circle having an opening in its bottom wall into a continuous manufacturing tundish circle having an upper lid located below the ladle And:
• V IPO An injection nozzle for the molten metal, attached to the opening in the bottom wall of the ladle; flowing out of the molten metal from the ladle into the tan dish; Means for controlling, a guide-cylinder vertically inserted into the above-mentioned tundish through an opening provided in the upper lid of the S &"SGtundish; And the molten metal flowing out of the 19 "5D injection nozzle, which is provided between the tub and the tub, until the molten metal is injected into the tub.
• Fig. 1 shows a state where molten metal is injected from a ladle into a tan dish by an injection device having a long nozzle. Lacquer cross section
• FIG. 2 is a schematic new view showing a state in which molten metal is poured from a ladle into a tundish according to the prior art.
• Fig. 3 is a vertical view of a vertical cylinder in the prior art. It is a sectional view
• FIG. 4 is a schematic cross-sectional view showing a state in which molten metal is being poured from a ladle into a tundish according to one embodiment of the present invention;
• FIG. 5 is a vertical view of a guide cylinder according to one embodiment of the present invention.
• FIG. 4 is a schematic cross section ⁇ showing a state in which molten metal is being poured from a ladle into a tundish according to one embodiment of the present invention
• FIG. [Fig. 3] Fig. 3 is a vertical view of a draft cylinder in one embodiment of the present invention: a new view. As shown in the 4th evil, the bottom wall of Ladle 1 where the molten metal was
• a nozzle receiver 2 having an opening ⁇ is fixed, and in the opening ⁇ , as in FIG. 1, a lower nozzle of a sliding nozzle 3 is provided.
• Le? Are fitted.
• the sliding nozzle 3 is fixed horizontally to the lower end of the upper nozzle 4 fitted to the opening 2a of the nozzle holder 2 and the lower end of the upper nozzle 4 in the same manner as in FIG.
• the above-described sliding nozzle 3 controls the flow of molten gold wealth from the ladle 1 to the continuous production tandish, as in FIG.
• a tandem for continuous mirror construction (hereinafter simply referred to as tandisu) 9 is located below the ladle 1 and has an opening 10a. 10 is installed. According to this,
• molten metal * 11 injected into the tandis 9 circle is prevented from scattering outside the tandis 9 in the early stage of the injection, and Lb is prevented.
• the temperature of 11 is prevented from dropping.
• Guide cylinder 1 8 of refractory steel passes through the opening 1 0 a of the upper lid 1 0 data down de I Tsu push from 9 are ⁇ perpendicular to 9 yen data Ndi Tsu shoe.
• a flange ISa having a long outside diameter is formed at the upper end of the cylinder 18 at the inner dimension of the opening 10a of the upper lid 10? As a result, the lid 10
• the upper part of the guide tube 18 is supported by the upper cover 10 without falling off from the opening 10a.
• the guiding bamboo shoots 18 are long enough that the lower part is dipped into the molten metal 11 injected into the tub 9 during use.
• the inner surface "S" of the guide tube 18 is inclined downward at least by an angle of ° "of S ° with respect to the axis" 0 "of the guide tube IS. As a result, the molten metal flowing out of the sliding nozzle 3 does not easily adhere to the inner surface of the cylinder 18. .
• the angle of inclination of the guide tube 1 8 "(9" was small Ku and also 5 °, when the inclination angle "(9” Ru 5 ° Not Mitsurudea, melting to the inner surface of the guide tube 1 8
• the inner diameter of the upper end of the guide tube 18 is longer than the lower nozzle 7 of the sliding nozzle 3: the immersion dimension. Therefore, the molten metal flowing out of the lower nozzle 7 is entirely injected into the cylinder 18 .
• the bottom wall la of the ladle has been with the Ri scan La y de y in g Roh's Le 3 Ni intends taken enclose good a .. protection tube 1 4 is taken.
• a protective tube 1 is stretchable self standing bellows I 5 made of refractory material, which is fixed to the lower end of the bellows 1 5, the inert gas supply pipe 1 6 is Se' withstand fire was made of the scan rie Bed It consists of 17. Guide for sleeve 17 ⁇ Upper surface of 18 ! : It is placed in.
• the molten metal flowing out of the sliding nozzle 3 by the inert gas such as argon supplied from the inert gas supply line 16 is used as a tandy gas.
• the molten metal in the bath is prevented from coming into contact with the atmosphere and being oxidized before being injected into the ash 9 .
• the operation of the sliding plate 6 of the sliding nozzle 3 can be performed from outside the bellows 15.
• one forging means the case where the ladle is replaced three times in succession and the molten steel is continuously forged.
• the amount of ingot deposited on the inner surface of the inner cylinder in the embodiment of the present invention is comparative Significantly less than the guide tube in.
• the service life of the guide cylinder was investigated when molten steel was injected into the tundish.
• the guide ⁇ ⁇ ⁇ ⁇ in the comparative example could not be used with one mirror-making.
• the shape of the cylinder is 3 to 41 ⁇ , and in the example of the invention, the guide cylinder is 4 to 5 times. Building was done. Therefore, the service life of the guide cylinder of the injection device * according to the present invention is the same as that of the injection device according to the comparative example.
• the molten metal is not easily adhered and can be used for a long time.
• a device for injecting water can be obtained, which has an industrially useful effect.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
• Continuous Casting (AREA)
• Furnace Charging Or Discharging (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=14220978

Family Applications (1)

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Citations (2)

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• 1983
  • 1983-06-24 JP JP9848683U patent/JPS605754U/ja active Pending
• 1984
  • 1984-06-22 WO PCT/JP1984/000327 patent/WO1985000126A1/ja active Application Filing
  • 1984-06-22 GB GB08502199A patent/GB2151958B/en not_active Expired
  • 1984-06-22 DE DE19843490299 patent/DE3490299C2/de not_active Expired
  • 1984-06-22 DE DE19843490299 patent/DE3490299T1/de active Pending

Patent Citations (2)

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