JPS5858961A - Horizontal continuous casting method of liquid metal and its device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention generally relates to a method and apparatus for horizontal continuous casting of liquid metals such as steel.

According to one such method, liquid metal exits a storage container in a controlled flow under the action of gravity and passes into a cooled horizontal continuous casting mold, where the casting direction is controlled. A soldering force is applied to the metal, and after solidification the casting is continuously removed from the mold.

Horizontal continuous casting has many advantages over vertical continuous casting because vertically aligned continuous casting equipment requires an expensive support frame structure, but such expensive structures are not required in horizontal continuous casting. Horizontal continuous casting also has the advantage that there is no need to change the direction of movement of the continuously cast product, which is cooled in a downward direction after leaving the mold. However, there is a risk in the horizontal continuous casting method that the shrinkage cavities or blowholes formed when the cast gold solidifies will move to the upper cross-sectional area of the horizontal casting, and the molten gold will not fill the cavities again. . There is also the disadvantage that impurities that may be present in the cast metal are deposited in the horizontally extending lower regions of the casting as the metal cools, resulting in separation of the mixture components from the metal composition. Furthermore, in known horizontal continuous casting, a storage container for the metal and a horizontal continuous casting mold are connected, for example, the storage container and the discharge pipe leading the molten metal into the horizontal continuous casting mold and the mold itself have a diameter of 1,500". Severely loaded at casting temperatures in excess of C, the components of these casting equipment must be easily accessible for maintenance and servicing after multiple runs. However, the location of the connections to these components It has been found that there are many cases where access is impossible.

According to the horizontal passage or channel between the storage container and the horizontal continuous casting mold disclosed in German Patent Publication No. 1 296 747, the horizontal passage or channel between the storage container and the horizontal continuous casting mold is surrounded by a magnetizing coil acting as a magnetic bonder. Proposals have been made to improve the quality of cast products extending to Filled with metal. This device therefore reduces the risk of blowholes forming in the upper part of the horizontally cast product, and in addition uses the above pressure in its casting direction acting on the cast product to reduce the pressure between the cast metal and the cast wall. It is intended to activate heat exchange and improve the settling of castings. Even though the device disclosed in the above-mentioned German Patent Publication eliminates the risk of re-oxidation of the liquid metal by removing most of the air from the device during its operation, the entire area of the liquid is passed through the above-mentioned horizontal passages or channels over a considerable length. The disadvantage is not only that it must be transported over a long distance, but also that the output of the magnetizing pump must be increased considerably and that a considerable amount of heat is lost. Furthermore, it is difficult to monitor and control the equipment during its operation.The purpose of the present invention is to minimize the possibility of defects such as shrinkage cavities occurring in the upper cross section, while also producing metal cast in a horizontal continuous casting method. A method of passing metal through a long and narrow supply path, minimizing the passing distance! It is also an object of the present invention to provide a horizontal continuous casting method capable of minimizing the occurrence of if losses and minimizing the power consumption for producing electromagnetic force acting on the metal in the hooking direction. Equipment f for carrying out horizontal continuous casting mold
The purpose is to provide

The method for horizontal continuous casting of liquid metal such as steel provided by the present invention involves flowing the liquid metal into a cooled horizontal continuous casting mold under the action of gravity and applying an electromagnetic force in the casting direction of the metal within the mold. In addition to the metal, in a method for continuously removing a cast product from a mold, liquid metal is discharged downwardly and deflected horizontally within the mold by a method such as discharging liquid metal from a liquid metal supply source into a horizontal continuous casting mold; A method of removing the cast product in this direction and applying force so as to maintain the level of the cast metal at the inlet end of the mold, which connects to the horizontal casting channel in the mold, within the upper spout and below the upper edge of the mold. is provided.

The method outlined above is advantageous from the point of view of maintenance of the casting equipment, since it provides a separation between the storage container or other suitable liquid metal discharge means and the horizontal casting mold. Furthermore,
This method limits the amount of energy expended to create the TiB force acting in the direction of the material casting and prevents the level of liquid metal from rising to unacceptable heights in the spout at the entrance end of the horizontal casting mold. Make it preventable. However, such electromagnetic force creates sufficient pressure in the mold in the casting direction to cause defects such as shrinkage holes to occur when the cast metal is cooled.
It is sufficient to prevent the mold from forming on the upper part of the cast product.
The spout also allows for the addition of lubricants, such as casting powder, to the contact metal bath, as is conventionally done in vertical continuous casting processes. The present invention also provides an apparatus for carrying out the above method, which apparatus comprises a horizontal continuous casting mold and a liquid metal operatively disposed in close proximity to the entrance of the mold for supplying liquid metal to the mold. The mold comprises ten stages of general supply and a magnetizing coil extending around the axis of the cast product or mold, and at the inlet end of the mold the mold has a curved part or The means for feeding the liquid metal t-mold has a curve S and the means for feeding the liquid metal t-mold has an outlet located above a spout for feeding cast metal into the t-mold.

The method of the present invention and! ! Other features of the installation are as follows:
(b) Adjust the electromagnetic force so that a level of the cast metal is formed by touching it at an angle of 1° to 1υ°, preferably 3° to 5°, in the opposite direction to the direction in which the casting comes out of the mold. (b) said horizontal continuous casting ma is driven by horizontal imaging during a casting operation; (1) The casting passage of the continuous casting mold is connected to and downstream of the 1 itr spout, and a sharp edge toward the spout is formed at the upper part of the mold; (1) -) the magnetizing coil extends in the axial direction beyond the spout 'fr of the continuous casting mold and has an opening that allows the liquid metal to flow through the hook h1 circle; The metal supply means includes a casting pipe forming the curved duct means, the series of pipes extending downwardly from the outlet of the liquid supply means through the spout of the continuous casting mold; has a curved duct product at its discharge end, and this curved duct part is pushed axially into the casting channel of the continuous casting mold and is connected to its spout; (g) a box arrangement; The coil is continuously cast! li
extending axially beyond the spout of the mold and said casting tube extending through the magnetizing coil; ^The liquid metal stream entering the trout-shaped spout during operation is surrounded by a gap that allows horizontal vibrations in the spout;
a) the horizontal continuous casting mold is adapted for axial vibration, the spout having a gap around the pouring tube to allow horizontal movement of the continuous casting mold; It is axially adjustable with respect to its initial position.

Preferred embodiments of the method and apparatus of the present invention will be described below based on the drawings. Referring first to FIG. 1, an embodiment of a horizontal continuous casting installation for metal, such as steel, includes a liquid metal container or container 2 containing molten steel 1, which container or container 2#'i is of conventional construction. Therefore, I will not explain it in detail below. As shown, the bottom of the container 2 has a spout 4 and is provided with a closure member 3.

The flow of cast metal, indicated at 5, exits in a downward direction. At this time, the slide member 3 is opened to some extent, and the molten steel flows into the spout 6 at the entrance of the horizontal continuous casting mold 7. It should be noted that only the inlet end of the horizontal continuous casting mold 7, which is placed at a short distance below the container 2, is shown in Figure 1; the rest of the mold structure may be of any conventional type. It may be.

As can be further seen from Fig. 1, at the bottom end of the mold 70, the mold 7
It has a bent or curved duct 8 which opens and communicates with a spout in the upper part of the mold 7.

A casting passage or channel is defined within the mold 7 as indicated at 9, which channel communicates with the curved duct section 8. As can be clearly seen from Figure 1,
The channel 9 is directed towards the spout 6, as indicated at 10, and forms an angular profile with -C sharp teeth at a position facing the spout 6.

The entry end of the mold 70 is further surrounded by a magnetizing coil or winding 11, which is provided with a spout 6. The magnetizing coil extends beyond the area of the mold 7 and is in a suitable position aligned with the aperture 13V of the magnetizing coil 11 with the pouring spout 6, the strength of the magnetic field being adjusted normally as appropriate by the control means 12. adjusted in the following manner.

As shown in Figure 1, the cast member 47 is mounted for movement in the direction of casting the metal, and the drive means 14 provides a small amplitude movement to cause the mold 7 to reciprocate in this direction. The effect of the magnetic field on the molten steel 1 in the mold 7 is also influenced by a slight movement of the magnetizing coil 11 in the axial direction (42), so that the driving means mounted on the indicating structure 14a can be used to control the casting material coming out of the mold 7. It may be adjustable within a limit range within the direction of.

The method of operating the above device is as follows. Flowing F8 steel 50 from the liquid metal supply means or container 2 into the spout 6 through the aperture 13i of the arsenide coil 11;
The flow of this molten steel 5 is deflected into the casting passage 9 in the mold 7 by the curved duct part 8, and horizontally continuous @ casting mold 70
A conventional cooling element (not shown in detail) provides cooling of the molten steel 1 in the channel 9 that increases with the direction of casting movement. That is, the cooling action starts from the inner wall surface 15 of the channel 9 and continues until a sufficiently strong and hard continuous casting mold is formed. The cast product exits the continuous casting mold at the exit end of the mold, where it is removed in a conventional manner (not shown in detail) by means of removal and discharge means. The mold 7 is caused to undergo reciprocating vibrational motion by the driving means 14. This contributes to the continuous escape of the melt from the inner walls 15 of the mold 7 to the outside of the casting shell 16 which is formed as it cools and solidifies in the mold.

It is also advantageous to allow continuous casting by making the spout 6 easily accessible and using additives such as lubricants such as oil or Ti casting powder. The magnetic field created by the biasing QC of 11 is adjusted by the control means 12 as follows. That is, the molten steel in the mold 7 is subjected to force *a in the horizontal casting direction, and is formed so that the level or surface of the cast metal is in the direction F of the pouring spout 6, as shown at 17, but this level 17 is 7 at an angle α of 1 to 10° with respect to the direction opposite to the direction of the cast material ejected from 7. The highest level of liquid metal in grams is 18
This 18 is located at the downstream end of the level 17 J: and is 11 points below the edge 10 at the artificial end of the channel 9 on the fi side. The luck of the casting, preferably through the mold and out of the mold! t
The angle of the ode level 17 makes with respect to the h line: ・yoJ°~
By adjusting the angle to 5°, it is possible to sufficiently reliably hold the molten steel l in the channel 9 below the spout 6, and at the same time to minimize the power consumption 57t for creating the t1ki field.

Next, in FIG. 2, an apparatus and a method according to a second embodiment of the present invention are shown. Instead of allowing the flow of molten steel 5 to pass through the mold 7 from the liquid metal supply means 2 to the mold 7 as shown at 19, a pipe or a duct as shown at 19 is used to thoroughly penetrate the molten steel 5.・Make sure you get one chance. ・Electric power is advantageous. In the device shown, the pipe '4 has a duct 19 extending from the outlet 4 of the supply means or storage container and is connected thereto, and enters the spout 6 of the mold 7 in the direction F. It stands out. Therefore, the discharge end of the duct or pipe 19 is at least partially in the mold 7 and -A part 3 of the casting W7.
111 (A curved duct portion 20 extending in the line direction inside the -L channel 9 and connected to the spout 6v is shown in the shape 1.) Ear 2 +Δ In the embodiment shown in FIG. 19 is fixedly connected to the monomerizing coil at a place where the opening in the magnetizing coil 11 passes through the 13 gold hole.

In the two Zhao embodiments of Hiyun, the pouring 1''6 of the mold 7 is the flow of liquid metal 5 (Figure 1) or the casting pie/L! j
(d2A) t-[However, the above horizontal layer mr4
The method of attaching the mold to the coil IIK in the IJ, which can be made in one section as in the case of a7Jα, may also be done depending on the case, by enclosing the creases with gaps to allow the It will be understood that the arresting device of the invention shown in FIG. 2 is the same in all other details as that in FIG. It also applies considerably to the zero foot embodiment of Figure 42, and therefore a complete description and technique of the second Maruse Kanryo will not be given to avoid repetition.

Supply container 2! 'i A device called a distribution means, that is, a device called a distribution means for simultaneously supplying molten steel from a plurality of discharge ports arranged in parallel to the grooves of a horizontal continuous casting mold, is formed in the same manner as in the past. It's okay.

Various changes or modifications may be made to embodiment F without departing from the scope of the invention as set forth in the claims; i! Of course, it is possible to do this.

[Brief explanation of the drawing]

FIG. 1 shows a horizontal series [M construction!] according to 41 embodiments of the present invention.
M1#Ifr conceptual diagram of ft1i, Figure 2 is a drawing similar to gE1 diagram showing the embodiment of Fi$2. 5...Liquid $4. fi-・----pour spout,
7... Horizontal continuous casting mold, 9... Passage, 11... Magnetizing coil. [Shi d] - Profession Golf Engineering Gesellschaft Mi Soto Pe 7 Urenkterno 17 Song Patent Application Agent Kokubuji Akira Yoiki Patent Attorney Nishi & d IJ 2 Masukon Kamimura j
l Taku Ha is a patent attorney Akiyuki Yamaguchi 71θ 5

Claims (1)

[Claims] 1. Discharging liquid metal from a liquid metal supply means into a horizontal continuous casting mold under the action of gravity, deflecting the liquid metal horizontally within the horizontal continuous casting mold, and applying a ta force within the casting. is applied to the liquid metal in its casting direction, and by adjusting the electromagnetic force, the level of the cast metal at the end of the mold that connects to the horizontal casting channel in the mold is controlled within the upper spout of the mold and below the upper edge. A horizontal continuous casting method for liquid metals, especially steel, in which the cast material is maintained and continuously removed from the mold. 2. 1° to 1° in the direction opposite to the direction in which the cast material comes out of the mold.
A method for horizontal continuous casting of liquid metal according to claim 1, wherein the ta force is adjusted so that a level of cast metal is formed at an angle of 0°. 3. The method for horizontal continuous casting of liquid metal according to claim 2, wherein the angle of inclination is from 3° to 5°. 4. The method for horizontal continuous casting of liquid metal according to claim 1, wherein the horizontal continuous casting mold is driven by horizontal motion during casting operation. 5. The method for horizontal continuous casting of liquid metal according to claim 14, wherein the casting mold is cooled. 6. The method of horizontal continuous casting of liquid metal according to claim 1, wherein the liquid metal supply means is a liquid metal storage container suitable for producing a controllable discharge stream of liquid metal. 7. A horizontal continuous casting mold having a spout at the top thereof, and means operatively associated with the spout of the horizontal continuous casting mold for supplying liquid metal into the mold, the means for discharging liquid metal into the mold. and a magnetizing coil disposed about the axis of the mold; at the inlet end of the mold, the horizontal continuous casting mold has a curved duct means communicating with the spout; 2. A horizontal continuous casting apparatus for liquid metal, comprising: a discharge port of said liquid supply means provided above said curved duct means; 8. The casting passage of the continuous casting mold marked # is connected to and downstream of the spout, and a sharp blade toward the spout is formed at hs of the mold. Horizontal continuous casting equipment as described. 9. Is the magnetization coil the spout of a continuous casting mold? a casting pipe extending axially beyond and discharging the liquid metal into the mold 10, said liquid metal supply means forming said curved duct means; The casting pipe extends downward from the outlet through the spout of the continuous casting mold, and the casting pipe has a curved duct portion at its discharge end;
The horizontal continuous casting apparatus for liquid metal according to claim 7, wherein the curved duct portion extends axially into the casting passage of the continuous casting mold and is connected to the spout thereof. 11. The liquid metal of claim 810, wherein the magnetizing coil extends axially beyond the spout of the continuous casting mold, and the casting tube extends through the magnetizing coil. horizontal continuous casting equipment. 12. The horizontal continuous casting mold is adapted for axial vibration;
Claim 7B: A self-contained horizontal continuous casting apparatus for liquid metal, wherein the liquid metal flow flowing into the spout of the continuous casting mold during operation is surrounded by a gap that allows horizontal vibration at the spout. . 13. The horizontal continuous casting mold is adapted to axial vibration;
11. The horizontal continuous casting apparatus for liquid metal according to claim 10, wherein the spout has a gap around the casting pipe to allow horizontal vibration of the continuous casting mold. Horizontal continuous casting apparatus for liquid metal as described,