KR100825326B1 - Apparatus for opening the nozzle of tundish in the continuous billet-casting process - Google Patents

Abstract

The present invention relates to a tundish nozzle forced opening device for forcibly opening the tundish nozzle when the tundish nozzle is blocked during continuous billet casting.

To this end, the present invention is a pre-heat transfer portion 35 is seated on the operating rail 23 of the double-cylindrical body 20, the copper pipe transfer 27 is mounted on the rotary rail 22 to rotate and the double cylindrical type An apparatus operating unit 60 including a cylinder body 47 for tilting the main body 20 left and right, a welder arm 42 connected to the preheater transfer 35, and a welder arm cylinder 40 accommodating the same; A solidification layer preheating unit 70 formed of a welder holder 45 fixed to the other end of the welder arm 42, a copper pipe insertion port 31 formed at one end of the copper pipe transfer 27, and oxygen supply. Provided is a tundish nozzle forced opening factory in billet continuous casting composed of an oxygen supply unit 80 comprising a nozzle 32.

As described above, according to the present invention, the productivity is improved by completely opening the tundish nozzle without enlarging it, and there is an effect of preventing a disaster due to the non-use of the small gas cutter.

Tundish Nozzle, Opening, Double Cylindrical Body, Transfer, Welding Machine, Oxygen Supply Unit

Description

TAP DASH NOZZLE FORCING DEVICE FOR BILLET CONTINUOUS CASTING {APPARATUS FOR OPENING THE NOZZLE OF TUNDISH IN THE CONTINUOUS BILLET-CASTING PROCESS}

1 is a perspective view showing the overall configuration of a tundish nozzle forced opening device according to the present invention;

2 is a component diagram of the solidification layer preheating unit constituting the tundish nozzle forced opening factory according to the present invention;

3 is a perspective view and a cross-sectional view of the solidification layer preheating unit constituting the tundish nozzle forced opening factory according to the present invention;

Figure 4 is an exploded perspective view of the device operating portion constituting the tundish nozzle forced opening factory according to the present invention;

5 is a cross-sectional view of the double-cylindrical body of the apparatus operating portion constituting the tundish nozzle forced opening factory according to the present invention;

6 is a perspective view and a cross-sectional view of a copper pipe transfer portion of the apparatus operating portion constituting the tundish nozzle forced opening factory according to the present invention;

7 is a perspective view and a side view of the preheating unit transfer of the apparatus operating portion constituting the tundish nozzle forced opening according to the present invention;

8 is a perspective view and a cross-sectional view showing the cylinder body of the apparatus operating portion constituting the tundish nozzle forced opening factory according to the present invention;

9 is a cross-sectional view showing a state in which the tundish nozzle forced opening device according to the present invention is coupled;

10 is a state diagram showing a state where the solidified layer preheating unit of the tundish nozzle forced opening device according to the present invention preheats the solidified layer of the tundish nozzle;

11 is a state diagram illustrating a state in which the oxygen supply unit of the tundish nozzle forced opening device according to the present invention supplies oxygen to the tundish nozzle and opens it.

♣ Explanation of symbols for main part of drawing ♣

20: dual cylindrical body 35: preheater transfer 27 copper pipe transfer

39: transfer housing 47: cylinder body 60: device operating part

42: welder arm 40: welder arm cylinder 45: welder holder

70: solidified layer preheating unit 32: oxygen supply nozzle 80: oxygen supply unit

The present invention relates to a device for forcibly opening the tundish nozzle when the tundish nozzle is not injected into the mold because the tundish nozzle is not opened at the start of continuous billet casting, and the tundish nozzle is not expanded. It relates to a tundish nozzle forced opening device that can be completely opened.

In the continuous casting of the billet (Bilet), since the tundish nozzle 12 is an open nozzle, the nozzle lower part is blocked and sand is injected into the upper part before the molten steel is injected into the tundish. After injecting molten steel into the tundish and opening the lower portion of the tundish nozzle, the molten steel is injected into the mold (Mold) while the sand exits.

However, in this process, when the temperature of the molten steel is low, or when the tundish preheating is insufficient or when foreign matter is inserted into the tundish nozzle 12, the solidified layer 13 of the molten steel is formed in the tundish nozzle, thereby clogging the nozzle. Often it does not open naturally.

If the nozzle 12 is clogged at the start of continuous casting and does not naturally open, it must be forced open. In the case of forced opening of the nozzle, the molten steel coagulation layer of the nozzle 12 is preheated by a small gas cutter, and then oxygen is supplied to the oxygen pipe to melt the coagulation layer.

In this way, when preheating with a small gas cutting machine, the preheating range is widened, and the nozzle diameter is enlarged because the nozzles 12 are preheated together. If the nozzle is enlarged, the amount of molten steel injected into the mold 10 is increased to make the casting operation impossible, and thus, continuous casting must be stopped. In addition, when forced to open by this method of work, the success rate is very low, which leads to abandonment of casting, which leads to a decrease in productivity and a risk of burn injury due to the operator having to work with a small gas cutter in a narrow space. Exists.

In order to solve the above problems, the present invention, when the tundish nozzle is clogged forcibly open at the start of continuous casting, to improve the productivity by completely opening the tundish nozzle without expanding the disaster, due to the use of a small gas cutter The purpose is to provide a tundish nozzle forced opening device that can prevent.

In order to achieve the above object, the present invention is a pre-heat transfer unit and horizontal pipe operating seated on the operating rail of the double-cylindrical main body and a rotary rail seated on the rotating rail, and the transfer housing fixed to the rear side of the main body A device operating part comprising a cylinder body coupled to the side hinge, a welder arm engaging the preheater transfer, and a welder arm cylinder fixed to an outer upper surface of the double cylindrical body to receive and horizontally operate the welder arm cylinder and the welder arm. It consists of a solidification layer preheating part consisting of a welder holder fixed to an end, and an oxygen supply part consisting of an oxygen supply nozzle fixed to an inner space of the copper pipe transfer while forming a copper pipe insertion hole formed at one end of the copper pipe transfer. Tundish nozzle for continuous billet casting Forced opening plant will be provided.

EMBODIMENT OF THE INVENTION Hereinafter, the structure of this invention is demonstrated in detail based on attached drawing.

1 is a perspective view showing the entire configuration of a tundish nozzle forced opening device according to the present invention.

As shown in FIG. 1, the tundish nozzle forced opening factory according to the present invention has an operating rail 23 horizontally formed at one side thereof, and an oxygen inlet 21 is formed at the center thereof, and a rotating rail 22 is formed at the other side thereof. The preheater transfer part 35 seated on the operation rail 23 of the double-cylindrical body 20 and horizontally operated, the copper pipe transfer 27 seated on the rotary rail 22 to rotate and the main body ( The first piston 48 which is hinged to the transfer housing 39 fixed to the rear side of the rear side 20 and the second piston 49 which fixes the weight 53 to the upper end so as to operate interlocked at the side thereof are provided. Apparatus operating part 60 which consists of a cylinder main body 47 to accommodate,

Welder arm 42 fixed to one side of the connecting ring 44 inserted into the connecting rod 37 of the preheater transfer part 35 which is seated on the operating rail 23 of the cylindrical body 20 and horizontally operated, Preheating layer consisting of a welder arm cylinder (40) fixed to the outer upper surface of the double-cylindrical main body 20 to accommodate and horizontally operated, and a welder holder (45) fixed to the other end of the welder arm (42). Section 70,

A copper pipe insertion port 31 and a fixing device 30 formed at one end of the copper pipe transfer 27 which is mounted on the rotary rail 22 of the cylindrical body 20 and rotates, and the copper pipe transfer 27. It consists of an oxygen supply unit 80 consisting of an oxygen supply nozzle 32 fixed to the inner space of the.

Figure 2 is a component diagram of the solidification layer preheating unit constituting the tundish nozzle forced opening factory according to the present invention, Figure 3 is a perspective view and a cross-sectional view of the solidification layer preheating unit constituting the tundish nozzle forced opening factory according to the present invention. 4 is an exploded perspective view of a device operating part constituting the tundish nozzle forced opening according to the present invention, and FIG. 5 is a cross-sectional view of a double cylindrical body of the device operating part constituting the tundish nozzle forced opening according to the present invention. .                     

2 to 5, the double cylindrical body 20 is formed with an oxygen injection port 21, the connecting rod operating rail 23 is formed on the left side, the rotating rail 22 on the right side ) Is formed.

In addition, the double-cylindrical main body 20 has an outer cylinder 24 and an inner cylinder 25, and stoppers 26, 26a, 26b, and 26c are provided on both left and right sides thereof. A transfer housing 39 is installed at the outer left side of the double cylindrical body 20, and a preheater transfer 35 is installed at the left side of the double cylindrical body 20. A spring 38 is inserted between 26a) and the fixing ring 36 of the preheater transfer 35. A fixing ring 36 is installed at the front end of the preheater transfer 35, and a connecting rod 37 of the letter “B” is installed perpendicular to the fixing ring 36.

A copper pipe transfer 27 is installed in the right side of the double cylindrical body 20, and a spring 38a is inserted between the stoppers 26 and 26c and the fixing ring 28 of the copper pipe transfer 27. . The copper pipe transfer 27 is provided with a fixed ring 28 at the rear end, a rotation guide 29 is installed perpendicular to the fixed ring 28, and a copper pipe insertion hole 31 is installed at the front end. A screw is formed in the insertion hole, and the copper pipe holder 30 in which the screw is formed is provided. An oxygen blocking membrane 33 is provided inside the copper pipe transfer 27, and an oxygen supply nozzle 32 in which a plurality of oxygen supply holes 34 are formed is provided.

An electric welder arm cylinder 40 is installed at an upper end of the double-cylindrical main body 20, and a connection ring operating rail is installed at the cylinder, and the electric welder arm 42 into the electric welder arm cylinder 40. Is mounted, the rear end of the arm 42 (Piston) 43 is installed, the connecting ring 44 is installed perpendicular to the support piston 43, the front end of the arm 42 is an electric welder holder 45 is provided, and the electric welder cable 46 is installed in the arm 42. As shown in FIG.

A cylinder body 47 for driving up and down is installed under the transfer housing 35 installed on the left side of the double cylindrical body 20. The cylinder body 47 is provided with first and second cylinders 50, 51. Each of the pistons 48 and 49 is installed in the first and second cylinders 50 and 51, and an air circulation port 52 connecting the first and second cylinders 50 and 51 to each other. Is installed, the weight 53 is installed on the upper end of the piston 49.

As shown in Figure 6 to 7, the double cylindrical body 20 is formed with an oxygen inlet 21 in the center, the connecting rod operating rail 23 is installed on the left side, the rotating rail ( 22 is provided, and a transfer housing 39 is provided at the left end.

The interior of the double cylindrical body 20 is divided into an inner cylinder 25 and an outer cylinder 24, and a stopper for fixing the operating range of the preheater transfer part 35 and the copper pipe transfer 27 to the center and left and right sides ( 26, 26a, 26b, and 26c are provided.

Figure 6 is a perspective view and a cross-sectional view of the copper pipe transfer of the apparatus operating unit constituting the tundish nozzle forced opening factory according to the present invention, Figure 7 is a preheating section transfer of the apparatus operating unit constituting a tundish nozzle forced opening factory according to the present invention 8 is a perspective view and a cross-sectional view showing a cylinder body of the device operating part constituting the tundish nozzle forced opening factory according to the present invention, Figure 9 is a tundish nozzle forced opening device according to the present invention is coupled It is sectional drawing which shows the state.

As shown in Figure 6 to 9, the left end of the copper pipe transfer 27 is inserted between the outer cylinder 24 and the inner cylinder 25 of the main body is provided with a fixing ring (28) to prevent separation during operation The copper pipe transfer 27 is inserted into and installed in the double-cylindrical main body 20, and the rotation guide 29 for rotating the copper pipe transfer 27 is provided.

A copper pipe inserting hole 31 is formed on the right side of the copper pipe transfer 27, and a screw is formed outside the copper pipe inserting hole 31, and the copper pipe 56 is inserted and then fixed. A copper pipe holder 30 is provided to give a screw, and a screw is formed inside the copper pipe holder 30, and an oxygen barrier layer 33 is provided in the copper pipe transfer 27. The oxygen supply nozzle 32 in which the oxygen supply port 34 is formed is incorporated.

As such, the constructed copper pipe transfer 27 is inserted and installed in the main body 27 as shown in FIG. 9, and is inserted between the outer cylinder 24 and the inner cylinder 25, and the stopper 26b and the stopper 26c. Between the stopper 26b and the stopper ring 28, a spring 38a is inserted between the stopper 26b and the stopper ring 28. After the copper pipe transfer 27 is inserted into the main body, as shown in FIG. 13, the rotation guide 29 is installed on the fixing ring 28 so as to protrude out of the rotary rail 22.

As shown in FIG. 7, the preheat transfer part 35 is cylindrical, closed on the left side, and inserted between the inner cylinder 25 and the outer cylinder 24 of the double cylindrical body 20 on the right side. There is a fixed ring 36 for left and right operation, and the connecting rod of the "b" perpendicular to the fixing ring 36 is installed.

The preheater transfer 35 configured as described above is installed between the inner cylinder 25 and the outer cylinder 24 of the double cylindrical body 20 and inserted into the stopper 26 and the stopper 26a as shown in FIG. 9. The spring 38 is installed between the stopper 20 and the fixing ring 30. After insertion between the preheater transfer 35 is installed in the double cylindrical body 20, the connecting rod 37 is installed on the fixing ring 36 to protrude out of the connecting rod operating rail 23 of the double cylindrical body 20.

As shown in FIG. 2, the electric welder arm cylinder 40 is provided with a connection ring operating rail 41 to the outside, and an electric welder holder 45 is installed to the right side of the electric welder arm 42. The piston 44 is provided on the left side, and the connecting ring 44 is provided perpendicularly to the piston 43.

An electric welder arm 42 is inserted and installed in the electric welder arm cylinder 40 configured as described above, and the electric welder power cable 40 penetrates the arm 42 and the cylinder 40. To be installed.

1 and 9, the electric welder cylinder 40 is fixed to the upper end of the main body 27, at this time, the connecting rod 37 is installed to insert the connection ring 44, 71, As shown in FIG. 8, there is an upper and lower operating cylinder body 47, and a first cylinder 50 and a second cylinder 57 are formed, and an air circulation port 52 is formed between the cylinder and the cylinder. . The first cylinder 48 is installed in the first cylinder 50, the second piston 49 is installed in the second cylinder 51, and the weight 53 to the upper end of the second piston 49. Is installed. At this time, the weight (53) should be heavier than the total weight of the device.

As described above, the first piston 48 is fixed to the lower portion of the transfer housing 39 as shown in FIGS. 1 and 9.

Referring to the operation of the present invention configured as described above are as follows.

If the tundish nozzle 12 is not opened by the casting operation, the welding rod 55 is mounted on the electric welder holder 45 of the apparatus of the present invention. Next, the copper pipe 56 bent by the letter “a” is inserted into the copper pipe insertion hole 31, and then the copper pipe holder 30 is rotated to completely fix the copper pipe 56. The device to which the copper pipe is fixed is spread over a post bar 14 attached to a tundish car (not shown), and the electric welder holder 45 is positioned below the tundish nozzle 12. .

When the device is installed, the power of the electric welder (not shown) is turned on and the transfer housing 35 is pressed downward. When the transfer housing 35 is pressed downward, the portion of the electric welder holder 45 of the apparatus is raised with the post bar 14 as the axis, and the first piston 48 is lowered so that the portion of the first cylinder 50 is lowered. Air moves to the second cylinder 49 through the circulation port 52 to lift the weight (53).

10 is a state diagram illustrating a state in which the solidified layer preheating unit of the tundish nozzle forced opening device according to the present invention preheats the solidified layer of the tundish nozzle, and FIG. 11 is an oxygen supply of the tundish nozzle forced opening device according to the present invention. It is a state diagram which shows the state which supplies oxygen to an additional tundish nozzle and makes it open.

As shown in FIG. 10, when the electric welder holder 45 rises, the electric welding rod 55 is inserted below the tundish nozzle 12 to preheat the molten steel solidification layer 13 while generating an electric arc. When it is visually determined that the preheating is sufficiently performed, the transfer housing 39 is held down, and oxygen is supplied through the oxygen supply hose 54. In this case, the second piston 49 descends by the weight of the weight 53, and the air of the second cylinder 51 moves to the first cylinder 50 through the air circulation port 52. While pushing the first piston 48 serves to keep the device horizontal.

At the same time, the oxygen supplied is introduced into the preheater transfer 35 and the copper pipe transfer 27 to reverse the preheater transfer 35, as shown in FIG. 11, and the preheater transfer 35. The reverse is to reverse the electric welder arm 42 is connected via the connecting rod 37 and the connection ring 44 as a back.

In addition, the oxygen introduced into the copper pipe transfer 27 hits the blocking film 33 so that the copper pipe transfer 27 moves forward, and the rotation guide 29 rotates along the rotary rail 22. While moving forward, at the same time oxygen is introduced into the oxygen supply port 34 to be supplied to the copper pipe 56, the copper pipe 56 is located below the tundish nozzle 12, the transfer housing 35 Pressing the copper pipe 56 is inserted into the tundish nozzle 12, oxygen is supplied to the solidified layer 13 of the preheated molten steel to melt.

When the solidified layer 19 of molten steel is melted by the supplied oxygen and the tundish nozzle 12 is opened and molten steel is injected into the mold 10, the apparatus is moved to the left, and then the supply of oxygen is stopped. When this is stopped, the preheater transfer 35 and the copper pipe transfer 27 advance and retreat by the built-in springs 38 and 38a, respectively, and the preheater transfer 35 moves forward and at the same time the electric welder arm ( 42) is also moved forward to move to the home position, the copper pipe transfer 27 is rotated along the rotary rail 22 when the rotary guide (29) when the reverse, so the copper pipe transfer 27 also rotates You will reverse.

As described above, according to the present invention, when the tundish nozzle is not blocked due to the opening of the continuous casting, when the forcible opening is forcibly opened, the productivity is improved by completely opening the tundish nozzle without enlarging the tundish nozzle. It is effective to prevent disasters.

Claims (4)

The operating rail 23 is formed horizontally on one side and the oxygen injection port 21 is formed in the center portion, and the preheating is performed on the operating rail 23 of the double-cylindrical body 20 on which the rotary rail 22 is formed. The side transfer 35, the copper pipe transfer 27 which is seated on the rotary rail 22 to rotate and the transfer housing 39 fixed to the rear side of the double cylindrical body 20 and the side hinge coupling An apparatus operating part (60) comprising a cylinder body (47) for receiving a first piston (48) and a second piston (49) for fixing the weight (53) at the upper end so as to interlock with the first piston (48); A welder arm 42 having a connection ring 44 inserted into a connecting rod 37 of a preheater transfer part 35 that is seated on an operating rail 23 of the double cylindrical body 20 and is horizontally operated; A solidification layer comprising a welder arm cylinder 40 fixed to the outer upper surface of the double cylindrical body 20 and a welder holder 45 fixed to the other end of the welder arm 42 to accommodate the horizontal operation. A preheating unit 70; A copper pipe insertion port 31 and a fixing device 30 formed at one end of the copper pipe transfer 27 which is mounted on the rotary rail 22 of the cylindrical body 20 and rotates, and the copper pipe transfer 27. Tundish nozzle forced opening device in continuous billet casting, characterized in that consisting of an oxygen supply unit 80 consisting of an oxygen supply nozzle 32 fixed to the inner space of the. The method of claim 1, The double-cylindrical main body 20 constituting the device operation unit 60 accommodates the preheater transfer 35 in one inner cylinder 25 and inserts a spring 38 into one outer cylinder 24, and the other inner cylinder ( 25) A tundish nozzle forced opening device for continuous billet casting, characterized in that the copper pipe transfer (27) is accommodated and the other outer cylinder (24) is inserted with a spring (38a). The method of claim 1, The solidification layer preheating part 70 penetrates from the rear side of the welder arm cylinder 40 to supply power to the welder holder 45 at one end thereof, and the welder holder (along the inner space of the welder arm 42). A tundish nozzle forced opening device in a continuous billet casting, characterized in that it comprises a power cable (42) connected to 45). The method of claim 1, The double cylindrical body 20 constituting the device operating part 60 is hinged to the lower post bar 14 is configured to be movable left and right by the left and right driving force of the cylinder body 47 Tundish nozzle forced opening device in continuous casting.

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