A positioning and mounting method for a casting nozzle of a continuous casting machine

Abstract

The application relates to a positioning and mounting method of a continuous casting machine casting nozzle, which comprises the following steps: S1, centering adjustment device setting; S2, positioning device setting; S3, box body mounting and adjustment; S4, substitute module mounting; S5, refractory one-time pouring; S6, nozzle plate mounting; S7, refractory secondary pouring; the application takes the positioning device as a positioning reference, aligns the long side of the cross-shaped groove in the middle of the positioning device with the transverse center line of the continuous casting machine, aligns the short side of the cross-shaped groove in the middle of the positioning device with the casting flow center line of the continuous casting machine, adjusts the horizontal position of the box body through a horizontal jackscrew device, makes the position of the box body meet the accuracy requirement of the positioning device, carries out one-time pouring layer construction and preliminary positioning of the nozzle plate through the substitute module, and then accurately controls the accuracy of the nozzle plate and the positioning device through the cross-shaped scale, so that high-precision positioning of the box body, the nozzle plate and the control line of the continuous casting machine is finally realized.

Description

A method for positioning and installing the casting nozzle of a continuous casting machine Technical Field

[0001] This invention belongs to the field of continuous casting machine technology, and in particular relates to a method for positioning and installing the casting nozzle of a continuous casting machine. Background Technology

[0002] Traditional continuous casting nozzles are mostly hollow cylindrical structures, which are small in size and easy to install and position. However, with the increase in plate thickness and casting speed, in order to improve the working performance of the nozzles, large cross-section and multi-point casting technology has been gradually adopted. This has resulted in significant changes in the shape and structure of the nozzles. They are no longer cylindrical structures, but rectangular or other various shapes. The positioning and installation accuracy has been increased accordingly. Therefore, how to improve the installation accuracy of the nozzles has become an urgent construction problem to be solved. Summary of the Invention

[0003] The main objective of this invention is to propose a method for positioning and installing the casting nozzle of a continuous casting machine, which can effectively solve the problems in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] A method for positioning and installing the casting nozzle of a continuous casting machine includes the following steps:

[0006] S1. Centering adjustment device setting

[0007] An elevation adjustment device, a horizontal screw device, and a center positioning pin are installed on the pouring platform. Multiple elevation adjustment devices are located at the bottom of the box body, multiple horizontal screw devices are arranged crosswise around the box body, and two center positioning pins are located below the trunnions on both sides of the box body.

[0008] S2, Positioning device setup

[0009] A lower base for the positioning device is set on the casting platform below the rectangular sprue opening at the bottom of the box body. The upper structure with a cross-shaped slot at the top is then installed on the lower base, with the long side of the cross-shaped slot parallel to the long side of the positioning device and the short side of the cross-shaped slot parallel to the short side of the positioning device. The long side of the cross-shaped slot in the middle of the positioning device is aligned with the transverse center line of the continuous casting machine, and the short side of the cross-shaped slot in the middle of the positioning device is aligned with the center line of the casting flow of the continuous casting machine. The positioning device serves as the positioning reference, and the accuracy of the cross-shaped slot must be ensured.

[0010] S3. Enclosure Installation and Adjustment

[0011] S3.1 The top elevation of the elevation adjustment device and the top elevation of the positioning device should be the same. Install the box onto the elevation adjustment device and the positioning device.

[0012] S3.2, Box body elevation adjustment: Re-measure the top elevation of the elevation adjustment device and the top elevation of the positioning device, and adjust them to keep them in the same plane;

[0013] S3.3, Adjustment of the horizontal center of the box: Using the long side of the middle cross-shaped slot on the positioning device as a reference, check the distance from it to the long side of the box to ensure that it meets the design requirements.

[0014] S3.4 Adjustment of the center line of the casting flow of the box: Using the short side of the middle cross-shaped slot on the positioning device as a reference, check the distance from it to the narrow side of the box to make it meet the design requirements.

[0015] S3.5 Adjustment of the positioning accuracy of the sprue opening of the box: Check the dimensional deviation between the sprue opening of the box and the cross-shaped slot on the positioning device. First, check the deviation between the long side of the sprue opening and the long side of the cross-shaped slot to determine that the positioning accuracy of the sprue opening and the transverse center line of the continuous casting machine meets the requirements. Then check the deviation between the short side of the sprue opening and the short side of the cross-shaped slot to determine that the positioning accuracy of the sprue opening and the casting flow center line of the continuous casting machine meets the requirements.

[0016] S4, Alternative Module Installation

[0017] A positioning block is set on the top of the upper structure of the positioning device. The top elevation of the positioning block is the same as the bottom elevation of the inner part of the box. A replacement module with the same shape and size as the sprue plate is installed on the top of the positioning device on the pouring platform. The bottom of the replacement module is made to fit tightly with the bottom of the inner part of the box and the positioning block. Then, the replacement module is fixed in the bolt holes on the top of the upper structure with bolts.

[0018] S5, refractory material cast in one go

[0019] Place the mold inside the box, ensuring the bottom of the mold is flush with the top of the replacement module. Check the distance between the mold and the box to ensure the gap is consistent. Finally, use a spreader beam to fix the mold to the box and perform the first pouring layer construction. The bottom elevation of the first pouring layer is consistent with the top elevation of the replacement module.

[0020] S6, Sprue Plate Installation

[0021] Remove the replacement module and replace it with a sprue plate, ensuring that the bottom of the sprue plate fits tightly against the inner bottom of the tank and the positioning block. The sprue plate is a rectangular block structure with a strip-shaped through hole in the middle. Insert a cross-shaped ruler into the cross-shaped slot on the upper structure through the strip-shaped through hole of the sprue plate. The cross-shaped ruler is precisely assembled with the cross-shaped slot and the strip-shaped through hole to control the accuracy of the sprue plate and the cross-shaped slot. Finally, use connecting bolts to fix the cross-shaped ruler to the upper structure and ensure that the rectangular plate on top of the cross-shaped ruler is flush with the top plane of the sprue plate.

[0022] S7, Secondary casting of refractory materials

[0023] The shape of the refractory material at the bottom of the box is finally shaped, and the second pouring layer is constructed to fill the gap between the sprue plate and the first pouring layer, and make the top surface of the second pouring layer flush with the top surface of the sprue plate.

[0024] Preferably, in step S1, two sets of elevation adjustment devices are arranged on the side of the bottom of the tank near the water inlet opening, one set of elevation adjustment devices is arranged in the middle of the other side of the bottom of the tank, and eight sets of horizontal set screw devices are arranged crosswise around the tank.

[0025] Preferably, in step S1, the elevation adjustment device is composed of a rectangular block and an adjustment shim, and the horizontal screw device is formed by bolts horizontally installed on a rectangular column.

[0026] Preferably, in step S2, the lower base and the upper structure are corresponding rectangular structures, and a shim is provided between the lower base and the upper structure to adjust the elevation of the upper structure.

[0027] Preferably, in step S4, the positioning block is a strip-shaped structure with the same thickness as the bottom plate of the box, and the replacement module is a rectangular block structure with countersunk bolt holes on the top for fixing it to the upper structure with bolts.

[0028] Preferably, in step S5, the side of the shaping mold near the molten steel pouring port can be set as an inclined surface, so that the gap between it and the box body forms a trapezoidal structure with a smaller top and a larger bottom.

[0029] Preferably, in step S6, three cross-shaped rulers are used. The cross-shaped ruler structure is a cross-shaped rectangular plate structure. A rectangular plate is set on the top of the plate and a circular through hole is set in the middle of the rectangular plate. The circular through hole extends through the cross-shaped rectangular plate structure. The width direction of the three cross-shaped rulers is in contact with the long side wall of the strip-shaped through hole, and the length direction of the two outermost cross-shaped rulers is in contact with the short side wall of the strip-shaped through hole.

[0030] This invention provides a method for positioning and installing the casting nozzle of a continuous casting machine, which has the following beneficial effects;

[0031] This invention uses a positioning device as a positioning reference. The long side of the cross-shaped slot in the middle of the positioning device is aligned with the transverse center line of the continuous casting machine, and the short side of the cross-shaped slot in the middle of the positioning device is aligned with the center line of the casting flow of the continuous casting machine. The horizontal position of the box is adjusted by a horizontal set screw device so that its position with the positioning device meets the accuracy requirements. The construction of the first pouring layer and the initial positioning of the sprue plate are carried out by a replacement module. Then, the accuracy of the sprue plate and the positioning device is precisely controlled by a cross-shaped ruler, so as to finally achieve high-precision positioning of the box, the sprue plate and the control line of the continuous casting machine. Attached Figure Description

[0032] Figure 1 is a schematic diagram of the centering adjustment device of the present invention;

[0033] Figure 2 is a schematic diagram of the positioning device of the present invention;

[0034] Figure 3 is a schematic diagram of the installation and adjustment of the housing of the present invention;

[0035] Figure 4 is a schematic diagram of the installation structure of the alternative module of the present invention;

[0036] Figure 5 is a schematic diagram of the structure of the refractory material of the present invention being cast in one step;

[0037] Figure 6 is a schematic diagram of the installation structure of the water inlet plate of the present invention;

[0038] Figure 7 is a schematic diagram of the secondary casting structure of the refractory material of the present invention.

[0039] In the diagram: 1. Casting platform; 2. Centering adjustment device; 2.1. Elevation adjustment device; 2.2. Center positioning pin; 2.3. Horizontal jacking screw device; 3. Box body; 3.1. Sprue opening; 4. Replacement module; 5. Positioning device; 5.1. Lower base; 5.2. Upper structure; 5.3. Cross-shaped slot; 5.4. Bolt hole; 5.5. Positioning block; 6. Primary casting layer; 7. Secondary casting layer; 8. Continuous casting machine casting flow center line; 9. Continuous casting machine transverse center line; 10. Shaping mold; 10.1. Spreader beam; 11. Molten steel pouring port; 12. Sprue plate; 13. Cross-shaped ruler. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0041] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0042] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0043] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly; for example, they may refer to a fixed connection, a detachable connection, or an integral connection; they may refer to a mechanical connection or an electrical connection; they may refer to a direct connection or an indirect connection through an intermediate medium; and they may refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0044] An embodiment of a method for positioning and installing a casting nozzle on a continuous casting machine includes the following steps:

[0045] S1, Setting of centering adjustment device 2

[0046] As shown in Figure 1, an elevation adjustment device 2.1, a horizontal screw device 2.3, and a center positioning pin 2.2 are set on the pouring platform 1. Multiple elevation adjustment devices 2.1 are located at the bottom of the box body 3, multiple horizontal screw devices 2.3 are arranged crosswise around the box body 3, and two center positioning pins 2.2 are located below the trunnions on both sides of the box body 3.

[0047] Specifically, two sets of elevation adjustment devices 2.1 are arranged on the side of the bottom of the tank 3 near the water inlet opening 3.1, one set of elevation adjustment devices 2.1 is arranged in the middle of the other side of the bottom of the tank 3, and eight sets of horizontal set screw devices 2.3 are arranged in a cross pattern around the tank 3.

[0048] Box 3 has a rectangular, hollow, open-top box structure with trunnions at both ends and pin holes at the bottom of the trunnions.

[0049] The elevation adjustment device 2.1 is composed of a rectangular block and an adjustment shim. The elevation of the elevation adjustment device 2.1 can be adjusted by the shim. The horizontal set screw device 2.3 is formed by bolts horizontally installed on the rectangular column. The horizontal position of the box 3 can be adjusted by the bolts. The central positioning pin 2.2 has a conical structure and is adapted to the pin holes of the trunnions on both sides of the box 3.

[0050] S2, Positioning device 5 setting

[0051] A lower base 5.1 of a positioning device 5 is set on the casting platform 1 below the rectangular sprue opening 3.1 at the bottom of the box 3. The upper structure 5.2 with a cross-shaped slot 5.3 on the top is then installed on the lower base 5.1, with the long side of the cross-shaped slot 5.3 parallel to the long side of the positioning device 5 and the short side of the cross-shaped slot 5.3 parallel to the short side of the positioning device 5. The long side of the cross-shaped slot 5.3 located in the middle of the positioning device 5 is aligned with the transverse center line 9 of the continuous casting machine, and the short side of the cross-shaped slot 5.3 located in the middle of the positioning device 5 is aligned with the casting flow center line 8 of the continuous casting machine. The positioning device 5 serves as a positioning reference, and the accuracy of the cross-shaped slot must be ensured.

[0052] The lower base 5.1 and the upper structure 5.2 are corresponding rectangular structures. A shim is provided between the lower base 5.1 and the upper structure 5.2 to adjust the elevation of the upper structure 5.2.

[0053] S3, Box 3 Installation and Adjustment

[0054] S3.1 The top elevation of the elevation adjustment device 2.1 should be the same as the top elevation of the positioning device 5. Install the box 3 onto the elevation adjustment device 2.1 and the positioning device 5.

[0055] S3.2, Elevation adjustment of box 3: Re-measure the top elevation of elevation adjustment device 2.1 and the top elevation of positioning device 5, and adjust them to keep them in the same plane;

[0056] S3.3, Adjustment of the horizontal center of the box 3: Using the long side of the middle cross-shaped slot 5.3 on the positioning device 5 as a reference, check the distance from it to the long side of the box 3 to make it meet the design requirements;

[0057] S3.4 Adjustment of the casting center line of box 3: Using the short side of the middle cross-shaped slot 5.3 on the positioning device 5 as the reference, check the distance from it to the narrow side of box 3 to make it meet the design requirements;

[0058] S3.5, Adjustment of the positioning accuracy of the sprue opening 3.1 of the housing 3: Check the dimensional deviation between the sprue opening 3.1 of the housing 3 and the cross-shaped slot 5.3 on the positioning device 5. First, check the deviation between the long side of the sprue opening 3.1 and the long side of the cross-shaped slot 5.3 to confirm that the positioning accuracy of the sprue opening 3.1 and the transverse center line 9 of the continuous casting machine meets the requirements. Then check the deviation between the short side of the sprue opening 3.1 and the short side of the cross-shaped slot 5.3 to confirm that the positioning accuracy of the sprue opening 3.1 and the casting flow center line 8 of the continuous casting machine meets the requirements.

[0059] S4, Replacement Module 4 Installation

[0060] A positioning block 5.5 is set on the top of the upper structure 5.2 of the positioning device 5. The top elevation of the positioning block 5.5 is the same as the inner bottom elevation of the box 3. The replacement module 4, which is the same shape and size as the sprue plate 12, is installed on the top of the positioning device 5 on the pouring platform 1, and the bottom of the replacement module 4 is tightly fitted with the inner bottom of the box 3 and the positioning block 5.5. Then, the replacement module 4 is fixed in the bolt hole 5.4 on the top of the upper structure 5.2 with bolts.

[0061] The positioning block 5.5 is a strip-shaped structure with the same thickness as the bottom plate of the box 3. The replacement module 4 is a rectangular block structure with countersunk bolt holes on the top for fixing it to the upper structure 5.2 with bolts.

[0062] S5, refractory material cast in one go

[0063] Place the molding mold 10 inside the box 3, ensuring that the bottom of the molding mold 10 is close to the top of the replacement module 4. Check the distance between the molding mold 10 and the box 3 to ensure that the gap is consistent. Finally, use the spreader beam 10.1 to fix the molding mold 10 on the box 3 and carry out the construction of the first pouring layer 6. The bottom elevation of the first pouring layer 6 is consistent with the top elevation of the replacement module 4.

[0064] Specifically, the side of the shaping mold 10 near the steel pouring port 11 can be set as an inclined surface, so that the gap between it and the box body 3 forms a trapezoidal structure with a smaller top and a larger bottom, which facilitates the subsequent demolding of the shaping mold 10.

[0065] Using a spreader beam 10.1 to fix the shaping mold 10 to the box body 3 involves setting up a spreader beam 10.1 on the top of the box body 3, with the bottom of the spreader beam 10.1 tightly attached to the top of the shaping mold 10, and fixing both ends of the spreader beam 10.1 to the side wall of the box body 3;

[0066] S6, Sprue Plate 12 Installation

[0067] Remove the replacement module 4 and replace it with the sprue plate 12, so that the bottom of the sprue plate 12 fits tightly with the inner bottom of the box 3 and the positioning block 5.5. The sprue plate 12 is a rectangular block structure with a strip-shaped through hole in the middle. Insert the cross-shaped ruler 13 into the cross-shaped slot 5.3 set on the upper structure 5.2 through the strip-shaped through hole of the sprue plate 12. The cross-shaped ruler 13 is precisely assembled with the cross-shaped slot and the strip-shaped through hole respectively, thereby controlling the accuracy of the sprue plate 12 and the cross-shaped slot. Finally, use connecting bolts to fix the cross-shaped ruler 13 on the upper structure 5.2, and make the top rectangular plate of the cross-shaped ruler 13 fit tightly against the top plane of the sprue plate 12.

[0068] Specifically, three cross-shaped rulers 13 are used. The cross-shaped rulers 13 have a cross-shaped rectangular plate structure. A rectangular plate is set on the top of the plate and a circular through hole is set in the middle of the rectangular plate. The circular through hole runs through the cross-shaped rectangular plate structure. The width direction of the three cross-shaped rulers 13 is in contact with the long side wall of the strip-shaped through hole, and the length direction of the two outermost cross-shaped rulers 13 is in contact with the short side wall of the strip-shaped through hole.

[0069] S7, Secondary casting of refractory materials

[0070] The bottom refractory material of the box body 3 is finally shaped, and the second pouring layer 7 is constructed to fill the gap between the sprue plate 12 and the first pouring layer 6, and make the top surface of the second pouring layer 7 flush with the top surface of the sprue plate 12.

[0071] In addition, during the construction of the secondary pouring layer 7, the area below the molten steel pouring port 11 can be poured into an arc-shaped structure. The top of the arc-shaped structure is higher than the top plane of the nozzle plate 12, which can prevent the formation of a depression at this point during the pouring of molten steel.

[0072] This invention uses the positioning device 5 as the positioning reference, aligns the long side of the cross-shaped slot 5.3 located in the middle of the positioning device 5 with the transverse center line 9 of the continuous casting machine, and aligns the short side of the cross-shaped slot 5.3 located in the middle of the positioning device 5 with the casting flow center line 8 of the continuous casting machine. The horizontal position of the box 3 is adjusted by the horizontal top screw device 2.3 so that its position with the positioning device 5 meets the accuracy requirements. The construction of the first pouring layer 6 and the initial positioning of the sprue plate 12 are carried out by the replacement module 4. Then, the accuracy of the sprue plate 12 and the positioning device 5 is precisely controlled by the cross-shaped ruler 13, thereby finally achieving high-precision positioning of the box 3, the sprue plate 12 and the control line of the continuous casting machine.

[0073] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for positioning and installing the casting nozzle of a continuous casting machine, characterized in that, The process includes the following steps: S1. A centering adjustment device is installed on the casting platform. This includes an elevation adjustment device, a horizontal jacking screw device, and a center positioning pin. Multiple elevation adjustment devices are located at the bottom of the casting box, and multiple horizontal jacking screw devices are arranged crosswise around the perimeter of the casting box. Two center positioning pins are located below the trunnions on both sides of the casting box. S2. A positioning device is installed on the casting platform below the rectangular sprue opening at the bottom of the casting box. A lower base for the positioning device is installed, and an upper structure with a cross-shaped slot at the top is installed on the lower base. The long side of the cross-shaped slot is parallel to the long side of the positioning device, and the short side is parallel to the short side of the positioning device. The long side of the cross-shaped slot in the middle of the positioning device is aligned with the transverse centerline of the continuous casting machine, and the short side of the cross-shaped slot in the middle of the positioning device is aligned with the transverse centerline of the continuous casting machine. The casting flow centerline of the casting machine is aligned, and the positioning device serves as the positioning reference, ensuring the accuracy of the cross-shaped slot. S3. Box Installation and Adjustment: S3.

1. The top elevation of the elevation adjustment device and the top elevation of the positioning device should be the same. Install the box onto the elevation adjustment device and the positioning device. S3.

2. Box Elevation Adjustment: Re-measure the top elevation of the elevation adjustment device and the top elevation of the positioning device, and adjust them to keep them in the same plane. S3.

3. Box Lateral Center Adjustment: Using the long side of the middle cross-shaped slot on the positioning device as a reference, check the distance from it to the long side of the box to ensure it meets design requirements. S3.

4. Box Casting Flow Centerline Adjustment: Using the short side of the middle cross-shaped slot on the positioning device as a reference, check the distance from it to the narrow side of the box to ensure it meets design requirements.

5. Adjustment of the positioning accuracy of the sprue opening in the box: Check the dimensional deviation between the sprue opening in the box and the cross-shaped slot on the positioning device. First, verify the deviation between the long side of the sprue opening and the long side of the cross-shaped slot to ensure that the positioning accuracy of the sprue opening and the transverse centerline of the continuous casting machine meets the requirements. Then, verify the deviation between the short side of the sprue opening and the short side of the cross-shaped slot to ensure that the positioning accuracy of the sprue opening and the casting flow centerline of the continuous casting machine meets the requirements. S4. Install the replacement module on the top of the upper structure of the positioning device. Set a positioning block at the top of the positioning block. The top elevation of the positioning block is the same as the inner bottom elevation of the box. Install the replacement module, which is the same shape and size as the sprue plate, on the top of the positioning device on the casting platform. Make sure that the bottom of the replacement module is tightly fitted with the inner bottom of the box and the positioning block. Then, use bolts to fix the replacement module in the bolt holes at the top of the upper structure. S5. Cast the refractory material in one go. Place the shaping mold inside the box, making sure that the bottom of the shaping mold is tightly fitted with the top of the replacement module. Check the distance between the shaping mold and the box. To maintain consistent gaps, a spreader beam is used to fix the molded formwork onto the box body for the first pouring layer construction. The bottom elevation of the first pouring layer is consistent with the top elevation of the replacement module. S6. The sprue plate is installed by removing the replacement module and replacing it with a sprue plate, ensuring the bottom of the sprue plate fits tightly against the bottom of the box body and the positioning block. The sprue plate is a rectangular block structure with a strip-shaped through hole in the center. A cross-shaped ruler is inserted through the strip-shaped through hole into a cross-shaped slot on the upper structure. The cross-shaped ruler is precisely assembled with both the cross-shaped slot and the strip-shaped through hole to control the accuracy of the sprue plate and the cross-shaped slot. Finally, connecting bolts are used to fix the cross-shaped ruler to the upper structure, ensuring the top rectangular plate of the cross-shaped ruler is flush with the top plane of the sprue plate. S7. Secondary refractory casting finalizes the shape of the refractory material at the bottom of the box body. The second pouring layer construction fills the gap between the sprue plate and the first pouring layer, ensuring the top surface of the second pouring layer is flush with the top surface of the sprue plate.

2. The method for positioning and installing the casting nozzle of a continuous casting machine according to claim 1, characterized in that: In step S1, two sets of elevation adjustment devices are arranged on the side of the bottom of the tank near the water inlet opening, one set of elevation adjustment devices is arranged in the middle of the other side of the bottom of the tank, and eight sets of horizontal set screw devices are arranged in a crisscross pattern around the tank.

3. The method for positioning and installing the casting nozzle of a continuous casting machine according to claim 1, characterized in that: In step S1, the elevation adjustment device is composed of a rectangular block and an adjustment shim, and the horizontal screw device is formed by bolts horizontally installed on a rectangular column.

4. The method for positioning and installing the casting nozzle of a continuous casting machine according to claim 1, characterized in that: In step S2, the lower base and the upper structure are corresponding rectangular structures, and a shim is provided between the lower base and the upper structure to adjust the elevation of the upper structure.

5. The method for positioning and installing the casting nozzle of a continuous casting machine according to claim 1, characterized in that: In step S4, the positioning block is a strip-shaped structure with the same thickness as the bottom plate of the box. The replacement module is a rectangular block structure with countersunk bolt holes on the top for fixing it to the upper structure with bolts.

6. The method for positioning and installing the casting nozzle of a continuous casting machine according to claim 1, characterized in that: In step S5, the side of the shaping mold near the molten steel pouring port can be set as an inclined surface, so that the gap between it and the box body forms a trapezoidal structure with a smaller top and a larger bottom.

7. The method for positioning and installing the casting nozzle of a continuous casting machine according to claim 1, characterized in that: In step S6, three cross-shaped rulers are used. The cross-shaped ruler structure is a cross-shaped rectangular plate structure. A rectangular plate is set on the top of the plate and a circular through hole is set in the middle of the rectangular plate. The circular through hole runs through the cross-shaped rectangular plate structure. The width direction of the three cross-shaped rulers is in contact with the long side wall of the strip-shaped through hole, and the length direction of the two outermost cross-shaped rulers is in contact with the short side wall of the strip-shaped through hole.

Images