Refining tundish tapping sliding plate mechanism installation positioning measuring die and method

Abstract

The invention discloses a positioning and measuring die and method for installing a steel tapping sliding plate mechanism of a refining tundish, and belongs to the technical field of vacuum production in the metallurgical industry, the positioning and measuring die comprises a base, a positioning and installing plate, a round steel body and a flange; wherein the size of the base is matched with that of a sliding plate mechanism mounting plate of the refining tundish, and the base is connected with the sliding plate mechanism mounting plate through bolts; the positioning mounting plate is fixedly connected with the round steel body and is used for controlling the reference height and levelness of the sealing base; a through hole matched with the pull rod is formed in the round steel body, and the flange is arranged at the head of the round steel body and matched with the drift diameter of the sealing base in an attached mode. According to the method, on-site accurate positioning is achieved, the repair period is shortened, the repair cost is reduced, the installation precision is improved, and the problems existing in the installation and repair process of the refined tundish tapping sliding plate mechanism are solved.

Description

Technical Field

[0001] This invention relates to the field of vacuum production technology in the metallurgical industry, and in particular to a positioning mold and method for installing a steel tapping slide mechanism in a refining tundish. Background Technology

[0002] In vacuum production processes in the metallurgical industry, the refining tundish plays a crucial role in storing, refining, and vacuum casting high-temperature molten steel. Its operational status directly affects the quality of steel products and production safety. The sliding plate mechanism, as the control component of the steel outlet channel in the refining tundish, achieves precise opening and closing of molten steel through cooperation with the mounting plate and sealing base. Its installation accuracy and stability are of paramount importance.

[0003] However, in actual production, the refining tundish is exposed to high temperatures for extended periods, making it prone to micro-deformation. Simultaneously, dimensional deviations may occur during the processing of the sealing refractory materials. These factors can all lead to a decrease in the fit accuracy between the mounting plate and the tie rod sealing base of the sliding plate mechanism, resulting in steel leakage and drilling. Furthermore, the scouring effect of high-temperature molten steel can directly damage the mounting plate or tie rod sealing base of the sliding plate mechanism, further exacerbating the risk of equipment failure.

[0004] To address the aforementioned equipment damage issues, existing repair methods typically involve the following steps: First, remove the adhered steel sections, then weld and repair the eroded areas. Next, transfer the ladle to a boring machine for machining and alignment to ensure the overall dimensional accuracy of the mounting plate and sealing base, preventing over-opening or under-closing during the sliding plate mechanism's operation. However, this repair method has several drawbacks: First, the repair cycle is too long, typically requiring around 15 days, severely impacting the ladle's efficiency and significantly affecting continuous production. Second, the repair cost is high, with each boring operation increasing production costs. Third, installation accuracy depends on the boring machine's machining precision; the lack of effective precise positioning and measurement methods on-site makes real-time calibration during sliding plate mechanism replacement or component replacement difficult. This can easily lead to steel leakage accidents due to the inability to promptly detect deformation of the mounting plate and sealing base, resulting in significant economic losses. Summary of the Invention

[0005] To address the problems of excessively long repair cycles, high repair costs, and a lack of effective and precise positioning and measurement methods when repairing the mounting plates or tie rod sealing bases of the refining tundish steel tapping sliding mechanism, this invention provides a positioning mold and method for the installation of the refining tundish steel tapping sliding mechanism. This method enables precise on-site positioning, shortens the repair cycle, reduces repair costs, and improves installation accuracy, thus solving the problems existing in the installation and repair of the refining tundish steel tapping sliding mechanism.

[0006] The technical solution adopted in this invention, which relates to a positioning mold and method for installing a steel tapping slide mechanism in a refining tundish, is as follows: A positioning mold for a refining intermediate ladle steel tapping slide mechanism includes a base, a positioning mounting plate, a round steel body, and a flange; wherein... The base is adapted to the size of the sliding plate mounting plate of the refining tundish and is connected to the sliding plate mounting plate by bolts; the positioning mounting plate is fixedly connected to the round steel body and is used to control the reference height and level of the sealing base; the round steel body has a through hole adapted to the tie rod, and the flange is set at the head of the round steel body and is fitted and adapted to the through diameter of the sealing base.

[0007] A further improvement of the technical solution of the present invention is that: the diameter of the through hole is Φ60, the through hole is coaxially arranged with the round steel body, and the axis of the through hole is perpendicular to the bottom surface of the base.

[0008] A further improvement of the technical solution of the present invention is that: the positioning mounting plate and the round steel body are an integrated structure, the horizontal error of the positioning mounting plate does not exceed ±0.5mm, and the positioning mounting plate is parallel to the bottom surface of the base.

[0009] A further improvement of the technical solution of the present invention is that: the base is provided with a plurality of bolt holes that correspond one-to-one with the mounting holes of the sliding plate mechanism mounting plate.

[0010] A further improvement of the technical solution of the present invention is that: the flange and the round steel body are an integrated structure, and when the end face of the flange is in contact with the end face of the sealing base, the center line of the flange is coaxial with the center line of the sealing base, and the coaxiality error does not exceed ±0.5mm.

[0011] A method for installing and positioning a steel tapping slide mechanism in a refining tundish, using the aforementioned measuring mold, includes the following steps: S1. When the skateboard mechanism is replaced regularly, the base of the measuring mold is fastened to the skateboard mechanism mounting plate with bolts. The dimensional parameters of the mounting plate and the sealing base are calibrated using the positioning mounting plate, the round steel body and the flange. If there is any deformation, it is corrected and repaired. S2. When the mounting plate or sealing base is burned and needs repair, clean the damaged parts, weld and grind to the basic size, and then assemble and install it by positioning with a measuring mold. S3. When the mounting plate needs to be replaced, replace the mounting plate first, then fasten the base of the measuring mold to the new mounting plate, insert the tie rod into the through hole of the round steel body for positioning, make the flange flush with the sealing base, and then weld the sealing base. After welding, remove the measuring mold and install the sliding plate mechanism.

[0012] A further improvement of the technical solution of the present invention is that the calibration of the dimensional parameters in step S1 includes the reference height, levelness and coaxiality, and the error after calibration does not exceed ±1mm.

[0013] A further improvement of the technical solution of the present invention is that: the basic dimensional deviation of the mounting plate or sealing base after welding and grinding in step S2 does not exceed ±2mm, and after positioning and assembly by measuring mold, the final installation accuracy is controlled within ±1mm.

[0014] A further improvement of the technical solution of the present invention is that: during the welding process of the sealing base in step S3, the measuring mold is kept in a positioning state until the welding is completed and the weld cools to room temperature before the measuring mold is removed.

[0015] The technological advancements achieved by this invention due to the adoption of the above technical solutions are as follows: The mold of this invention has high installation accuracy. Through precise design and processing, the installation accuracy is controlled within ±1mm, which is more than double the existing tolerance requirement of ±2mm. This effectively avoids accidents such as over-opening, incomplete closing, steel leakage, and steel drilling caused by installation deviation of the sliding plate mechanism, thereby improving production safety.

[0016] This invention can significantly shorten the repair and installation cycle, optimizing the traditional 15-day boring machine processing and repair process into on-site positioning and installation completed within 1 day, improving the efficiency of steel ladle use, ensuring the continuity of metallurgical production, and reducing production losses caused by equipment downtime.

[0017] This invention can reduce production costs, saving nearly 50,000 yuan in machine tool processing fees per repair. At the same time, by using measuring molds to accurately check the new slide mechanism every month, it can reduce steel leakage accidents caused by the inability to judge the deformation of the mounting plate and sealing base by at least two times a year, avoiding economic losses such as equipment damage and molten steel waste caused by the accidents.

[0018] This invention can directly realize the positioning, measurement and calibration of the mounting plate and the sealing base on site. It is applicable to various scenarios such as regular replacement of the sliding plate mechanism, repair of burn damage to the mounting plate or sealing base, and replacement of the mounting plate or sealing base, and has strong versatility. Attached Figure Description

[0019] Figure 1 This is a front view of the mounting and positioning mold for the steel tapping slide mechanism of the refining tundish according to the present invention; Figure 2 This is a side view of the mounting and positioning mold of the steel tapping slide mechanism of the refining tundish according to the present invention; Figure 3 This is a top view of the mounting and positioning mold of the steel tapping slide mechanism of the refining tundish according to the present invention.

[0020] In the attached diagram: 1. Base; 2. Positioning and mounting plate; 3. Round steel body; 4. Flange; 5. Through hole. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings. In the following description, descriptions of well-known structures and technologies are omitted to avoid unnecessarily obscuring the concept of this invention.

[0022] Example 1 This embodiment provides a positioning mold for the installation of a refining tundish tapping slide mechanism, including a base 1, a positioning mounting plate 2, a round steel body 3, and a flange 4. The base 1 is adapted to the size of the refining tundish slide mechanism mounting plate and is connected to the slide mechanism mounting plate by bolts. The positioning mounting plate 2 is fixedly connected to the round steel body 3 to control the reference height and levelness of the sealing base. The round steel body 3 has a through hole 5 adapted to the tie rod, and the flange 4 is located at the head of the round steel body 3 and is fitted and adapted to the through diameter of the sealing base.

[0023] Specifically, the base 1 is made of 50mm thick steel plate. The size of the base 1 is completely consistent with the mounting plate of the skateboard mechanism of the refining intermediate ladle. The base 1 has bolt holes corresponding to the mounting plate of the skateboard mechanism. The number, diameter and position of the bolt holes are strictly matched with the mounting hole layout of the skateboard mechanism mounting plate to ensure that the base 1 can be tightly fastened to the skateboard mechanism mounting plate by bolts, providing a stable reference positioning for the entire mold.

[0024] The positioning mounting plate 2 and the round steel body 3 adopt an integrated welded structure. The horizontal error of the positioning mounting plate 2 is controlled within ±0.5mm, and the bottom surface of the positioning mounting plate 2 and the base 1 are kept parallel to ensure precise control of the height and horizontality of the sealing base.

[0025] The round steel body 3 has a through hole 5 that is compatible with the tie rod. The diameter of the through hole 5 is Φ60. The through hole 5 is coaxial with the round steel body 3, and the axis of the through hole 5 is perpendicular to the bottom surface of the base 1, so as to ensure that the tie rod can move smoothly after it is inserted, and at the same time ensure the coaxiality of the tie rod with the mounting plate and the sealing base.

[0026] Flange 4 is located at the head of the round steel body 3 and is an integral part of the round steel body 3, made of the same material. The end face of flange 4 is precision machined to ensure that its flatness error does not exceed ±0.1mm. When flange 4 is fitted with the end face of the sealing base, the center line of flange 4 is coaxial with the center line of the sealing base, and the coaxiality error is controlled within ±0.5mm. Through the fit between flange 4 and the sealing base, the installation accuracy of the sealing base is further guaranteed.

[0027] Example 2 This embodiment provides a method for installing and positioning a steel tapping slide mechanism for refining intermediate ladles, based on Embodiment 1, including the following steps: S1. When the skateboard mechanism is replaced regularly, the base 1 of the measuring mold is fastened to the mounting plate of the skateboard mechanism with bolts. The dimensional parameters of the mounting plate and the sealing base are calibrated using the positioning mounting plate 2, the round steel body 3 and the flange 4. If there is any deformation, it is corrected and repaired.

[0028] The calibration of the above dimensional parameters includes the reference height, levelness, and coaxiality, and the error after calibration shall not exceed ±1mm.

[0029] S2. When the mounting plate or sealing base is damaged and needs repair, clean the damaged parts, weld and grind them to the basic dimensions, and then assemble and install them using a measuring mold for positioning.

[0030] The basic dimensional deviation of the mounting plate or sealing base after the above welding and grinding does not exceed ±2mm. After positioning and assembly with measuring molds, the final installation accuracy is controlled within ±1mm.

[0031] S3. When the mounting plate needs to be replaced, replace the mounting plate first, then fasten the base 1 of the measuring mold to the new mounting plate, insert the tie rod into the through hole 5 of the round steel body 3 for positioning, make the flange 4 flush with the sealing base, and then weld the sealing base. After welding, remove the measuring mold and install the sliding plate mechanism.

[0032] During the welding process of the aforementioned sealing base, the measuring mold remains in a positioned state until the welding is completed and the weld has cooled to room temperature before the measuring mold is removed.

[0033] When this invention is applied to the periodic replacement of the skateboard mechanism: First, the original skateboard mechanism of the refining tundish is removed, and the sticky steel and debris on the surface of the skateboard mechanism mounting plate and sealing base are cleaned to ensure that the mounting surface is flat. Then, the base 1 of the measuring mold is fastened to the skateboard mechanism mounting plate with bolts. The levelness of the positioning mounting plate 2 of the measuring mold, the verticality of the round steel body 3, and the fit of the flange 4 are checked. The reference height of the sealing base is measured through the positioning mounting plate 2 of the measuring mold, and the coaxiality of the sealing base's bore diameter is checked using the built-in through hole 5 of the round steel body 3. If the sealing base is found to be deformed, it is corrected and repaired using a straightening tool until all dimensional parameters meet the installation requirements, ensuring that the error after calibration is controlled within ±1mm. Finally, after calibration, the measuring mold is removed, and the new skateboard mechanism is installed between the mounting plate and the sealing base according to the conventional installation procedure, completing the replacement of the skateboard mechanism.

[0034] When this invention is applied to the repair of burnt mounting plates or sealing bases: First, the damaged sliding plate mechanism is removed, and the burned parts of the mounting plate or sealing base are cleaned to remove the burned metal layer and adhered steel until the intact metal substrate is exposed. Then, the cleaned mounting plate or sealing base is welded and repaired. During the welding process, additional welding is performed according to the original dimensions. After the welding is completed, the plate is ground to ensure that the basic dimensional deviation of the mounting plate or sealing base is controlled within ±2mm. Then, the base 1 of the measuring mold is fastened to the mounting plate of the sliding plate mechanism. The welded mounting plate or sealing base is positioned and assembled using the positioning mounting plate 2, the round steel body 3, and the flange 4 of the measuring mold. The position of the mounting plate or sealing base is adjusted to ensure that its reference height, levelness, and coaxiality meet the requirements. The final installation accuracy is controlled within ±1mm. Finally, after positioning is completed, the welded parts are inspected a second time. After confirming that there are no dimensional deviations, the measuring mold is removed and the sliding plate mechanism is installed.

[0035] In the above embodiments, the present invention provides a positioning die and method for installing the steel tapping slide mechanism of a refining tundish. The die of the present invention has high installation accuracy; through precise design and processing, the installation accuracy is controlled within ±1mm, exceeding the existing ±2mm tolerance requirement by more than double. This effectively avoids over-opening, incomplete closing, steel leakage, and steel drilling accidents caused by installation deviations in the slide mechanism, thus improving production safety. The present invention can significantly shorten the repair and installation cycle, optimizing the traditional 15-day boring machine processing and repair process into a one-day on-site positioning and installation, improving the efficiency of ladle use and ensuring the continuity of metallurgical production. This invention reduces production losses caused by equipment downtime; it can lower production costs, reducing machine tool processing costs by nearly 50,000 yuan per repair; at the same time, by using measuring molds to accurately check the new slide plate mechanism every month, it can reduce steel leakage accidents caused by the inability to judge the deformation of the mounting plate and sealing base by at least 2 times a year, avoiding economic losses such as equipment damage and molten steel waste caused by accidents; this invention can directly realize the positioning, measurement and calibration of the mounting plate and sealing base on site, and is applicable to various scenarios such as regular replacement of slide plate mechanism, repair of burn damage to mounting plate or sealing base, and replacement of mounting plate or sealing base, with strong versatility.

[0036] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the concept and scope of the present invention. Various modifications and improvements made to the technical solutions of the present invention by those skilled in the art without departing from the inventive concept should fall within the protection scope of the present invention. All technical contents for which protection is sought in this invention are fully described in the claims.

Claims

1. A positioning mold for a steel tapping slide mechanism in a refining tundish, characterized in that: Includes a base (1), a positioning mounting plate (2), a round steel body (3), and a flange (4); among which, The base (1) is adapted to the size of the sliding plate mounting plate of the refining intermediate ladle and is connected to the sliding plate mounting plate by bolts; the positioning mounting plate (2) is fixedly connected to the round steel body (3) and is used to control the reference height and level of the sealing base; the round steel body (3) has a through hole (5) adapted to the tie rod, and the flange (4) is set at the head of the round steel body (3) and is adapted to fit the through diameter of the sealing base.

2. The refining intermediate ladle steel tapping slide plate installation and positioning mold according to claim 1, characterized in that: The diameter of the through hole (5) is Φ60. The through hole (5) is coaxially arranged with the round steel body (3), and the axis of the through hole (5) is perpendicular to the bottom surface of the base (1).

3. The refining intermediate ladle steel tapping slide plate installation and positioning mold according to claim 1, characterized in that: The positioning mounting plate (2) and the round steel body (3) are an integrated structure. The horizontal error of the positioning mounting plate (2) does not exceed ±0.5mm, and the positioning mounting plate (2) is parallel to the bottom surface of the base (1).

4. The positioning mold for the steel tapping slide mechanism of a refining intermediate ladle according to claim 1, characterized in that: The base (1) has multiple bolt holes that correspond one-to-one with the mounting holes of the sliding plate mechanism mounting plate.

5. The refining intermediate ladle steel tapping slide plate installation and positioning mold according to claim 1, characterized in that: The flange (4) and the round steel body (3) are an integrated structure. When the end face of the flange (4) is in contact with the end face of the sealing base, the center line of the flange (4) is coaxial with the center line of the sealing base, and the coaxiality error does not exceed ±0.5mm.

6. A method for installing and positioning a steel tapping slide mechanism in a refining tundish, characterized in that: Using the measuring mold according to any one of claims 1-5, the following steps are included. S1. When the skateboard mechanism is replaced regularly, the base (1) of the measuring mold is fastened to the mounting plate of the skateboard mechanism with bolts. The dimensional parameters of the mounting plate and the sealing base are calibrated using the positioning mounting plate (2), the round steel body (3) and the flange (4). If there is deformation, it is corrected and repaired. S2. When the mounting plate or sealing base is burned and needs repair, clean the damaged parts, weld and grind to the basic size, and then assemble and install it by positioning with a measuring mold. S3. When the mounting plate needs to be replaced, replace the mounting plate first, then fasten the base (1) of the measuring mold to the new mounting plate, insert the tie rod into the through hole (5) of the round steel body (3) for positioning, make the flange (4) flush with the sealing base and then weld the sealing base. After welding, remove the measuring mold and install the sliding plate mechanism.

7. The method for installing and positioning a steel tapping slide mechanism for a refining tundish according to claim 6, characterized in that: The calibration of dimensional parameters in step S1 includes reference height, levelness, and coaxiality, and the error after calibration does not exceed ±1mm.

8. The method for installing and positioning a steel tapping slide mechanism for a refining tundish according to claim 6, characterized in that: In step S2, the basic dimensional deviation of the mounting plate or sealing base after welding and grinding does not exceed ±2mm. After positioning and assembly with measuring molds, the final installation accuracy is controlled within ±1mm.

9. The method for installing and positioning a steel tapping slide mechanism for a refining tundish according to claim 6, characterized in that: During the welding process of the sealing base in step S3, the measuring mold remains in a positioned state until the welding is completed and the weld cools to room temperature before the measuring mold is removed.

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