Method and system for measuring residual weight of steel ladle casting

Abstract

The invention discloses a steel ladle casting residual weight measuring method and system which are applied to a molten steel continuous casting production line, the molten steel continuous casting production line comprises a casting machine and a cold repair tilting gear, the casting machine comprises a casting machine fork arm, a first weighing sensor is installed at the trunnion supporting position of the casting machine fork arm, and a second weighing sensor is installed at the trunnion supporting position of the casting machine fork arm. A second weighing sensor is installed at the trunnion supporting position of the cold repair tilting gear, and the method comprises the steps that after casting operation of a steel ladle on a casting machine is completed, the first weight of the steel ladle is obtained based on a first weighing sensor on a fork arm of the casting machine; turning over the steel ladle to obtain the steel ladle after the casting residual molten steel is emptied; based on a second weighing sensor on the cold repair tilting gear, the second weight of the steel ladle after the residual casting molten steel is emptied is obtained; and according to the difference value of the first weight and the second weight, the casting residual weight is determined. According to the method, the precision and reliability of steel ladle casting residue weight measurement are remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of measurement and control technology in iron and steel metallurgy, and in particular to a method and system for measuring the residual weight of steel ladle castings. Background Technology

[0002] Currently, in the continuous casting process of steel smelting, especially in the production of high-end steel products such as automotive outer panels, a ladle residue operation is often adopted to effectively control and reduce the content of oxide inclusions such as alumina and calcium aluminate in the cast billet. This operation requires that a predetermined weight of residual molten steel (i.e., casting residue) be retained in the ladle at the end of casting to serve as a carrier for inclusions and prevent them from entering the cast billet. Typically, the weight of the casting residue needs to be controlled within the range of approximately 1 / 15 to 1 / 10 of the full ladle weight.

[0003] However, accurately measuring the remaining weight during actual production remains a technical challenge. Currently, the industry mainly relies on the weighing system on the casting machine's fork arm to measure the weight at the moment of stoppage. However, this measurement method has significant drawbacks: First, the environment in the casting machine area is harsh, with high-temperature radiation, slag splashes, and falling slag easily interfering with the operation of the weighing sensors. In some cases, slag blocks pressing against the bottom of the ladle can even cause serious distortion in the measurement value. Second, the weight of the ladle itself can change due to slag adhesion and refractory material corrosion during use, resulting in large fluctuations in the calculated remaining weight and poor reliability.

[0004] This measurement inaccuracy poses a serious challenge to production stability and quality control. If the actual amount of leftover steel is too much, it means that valuable molten steel is poured into the slag pot as waste, which directly increases production costs. If the actual amount of leftover steel is too little, it may lead to an excessively large ladle clearance, which not only fails to effectively adsorb inclusions and affect the quality of the billet, but may also pose a risk to the smooth operation of subsequent production.

[0005] Therefore, there is an urgent need in this field for a solution that can overcome the above-mentioned defects and achieve high-precision and high-reliability measurement of the remaining weight of steel ladle castings. Summary of the Invention

[0006] To improve the accuracy and reliability of measuring the remaining weight of steel ladle castings, this invention provides a method and system for measuring the remaining weight of steel ladle castings.

[0007] In a first aspect, embodiments of the present invention provide a method for measuring the remaining weight of steel ladle castings, applied to a continuous casting production line of molten steel. The continuous casting production line includes a casting machine and a cold repair turning machine. The casting machine includes a casting machine fork arm. A first weighing sensor is installed at the trunnion support position of the casting machine fork arm, and a second weighing sensor is installed at the trunnion support position of the cold repair turning machine. The method includes: After the ladle completes the casting operation on the casting machine, the first weight of the ladle is obtained based on the first weighing sensor on the fork arm of the casting machine. The ladle is flipped over to obtain a ladle after the remaining molten steel has been emptied. Based on the second weighing sensor on the cold repair turning machine, the second weight of the ladle after the residual molten steel is emptied is obtained. The remaining weight is determined based on the difference between the first weight and the second weight.

[0008] In one or more optional embodiments of this application, before obtaining the second weight of the ladle after emptying the molten steel based on the second weighing sensor on the cold repair turning machine, the method further includes: Control the cold repair steel turning machine to deflect from a vertical position to a preset angle; After all debris has been removed from the second weighing sensor of the cold repair turning machine, the cold repair turning machine is controlled to reset to the vertical state.

[0009] In one or more optional embodiments of this application, the cold repair turning machine is equipped with a mechanical limiting device, and the method further includes: If the cold repair turning machine is reset to the vertical state, the mechanical limit device is used to confirm that the cold repair turning machine has been reset to the vertical state.

[0010] Secondly, embodiments of the present invention provide a computer device, including a memory, a processor, and a computer program stored in the memory, wherein the processor executes the computer program to implement the method for measuring the remaining weight of the ladle casting as described above.

[0011] Thirdly, embodiments of the present invention provide a system for measuring the weight of casting residue in a ladle, applied to a continuous casting production line of molten steel, wherein the continuous casting production line includes a casting machine and a cold repair turning machine, the casting machine includes a casting machine fork arm, and the system includes: The first weighing sensor installed at the trunnion support position of the casting machine fork arm, the second weighing sensor installed at the trunnion support position of the cold repair turning machine, and the aforementioned ladle casting residual weight measuring device.

[0012] Optionally, the second weighing sensor on the cold repair turning machine is a contact weighing sensor, and the force-bearing surface size of the second weighing sensor is consistent with the size of the ladle trunnion base.

[0013] Optionally, the first weighing sensor on the casting machine fork arm is a column-type weighing sensor.

[0014] Optionally, a cover plate is provided on the casting machine fork arm; the cover plate is located at the trunnion support position of the casting machine fork arm; the first weighing sensor of the casting machine fork arm is located between the cover plate and the casting machine fork arm.

[0015] Optionally, the length of the cover plate is greater than the length of the ladle trunnion base.

[0016] Optionally, the cover plate has a through hole at a position opposite to the force-bearing surface of the first weighing sensor.

[0017] Fourthly, embodiments of the present invention provide a computer-readable storage medium having a computer program / instructions stored thereon, which, when executed by a processor, implements the method for measuring the remaining weight of the ladle casting as described above.

[0018] Fifthly, embodiments of the present invention provide a computer program product, including a computer program / instruction, which, when executed by a processor, implements the method for measuring the remaining weight of the ladle casting as described above.

[0019] The beneficial effects of the above-described technical solutions provided in the embodiments of the present invention include at least the following: This invention provides a method for measuring the remaining weight of steel in a ladle. This method uses a weighing sensor installed in the cold-repair turning machine on the continuous casting production line. By utilizing weighing data from two independent stations on the continuous casting line—the casting machine and the cold-repair turning machine—the method calculates the difference between the first weight of the ladle when the casting machine stops pouring and the second weight of the ladle after the remaining weight is emptied at the cold-repair turning machine. This achieves accurate measurement of the remaining weight of the ladle. This method overcomes the accuracy bottleneck of existing single weighing systems under harsh working conditions. By cross-validating data from two stations, it eliminates measurement errors caused by fluctuations in the ladle's own weight and interference from the on-site environment. This provides a reliable data foundation for precise ladle control in the continuous casting production process, thereby ensuring the purity of high-end steel and minimizing steel waste, achieving dual optimization of quality control and production costs.

[0020] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures particularly pointed out in the written description and the accompanying drawings.

[0021] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0022] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a flowchart illustrating the method for measuring the residual weight of steel ladle castings provided in an embodiment of the present invention. Detailed Implementation Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0023] The inventors discovered that in existing technologies, the industry mainly relies on the weighing system on the fork arm of the casting machine to measure at the moment of stopping pouring. However, this measurement method has significant drawbacks: First, the environment in the casting machine area is harsh, and high-temperature radiation, slag splashes, and falling slag can easily interfere with the operation of the weighing sensor, and even cause serious distortion of the measurement value due to slag blocks pressing against the bottom of the ladle. Second, the weight of the ladle itself will change due to slag adhesion and refractory material corrosion during use, resulting in large fluctuations in the calculated remaining weight and poor reliability.

[0024] This measurement inaccuracy poses a serious challenge to production stability and quality control. If the actual amount of remaining steel is too high, it means that valuable molten steel is being poured into the slag pot as waste, directly increasing production costs. If the actual amount of remaining steel is too low, it may lead to an excessively large ladle clearance, which not only fails to effectively adsorb inclusions and affects the quality of the cast billet, but may also pose risks to the smooth operation of subsequent production. Based on this, the inventors, through further research and development, have created this invention, providing a method and system for measuring the remaining weight of steel in a ladle.

[0025] Example 1 Embodiment 1 of this invention provides a method for measuring the remaining weight of steel ladle castings, applied to a continuous steel casting production line, with reference to... Figure 1 As shown, the continuous casting production line includes a casting machine and a cold repair turning machine. The casting machine includes a casting machine fork arm. A first weighing sensor is installed at the trunnion support position of the casting machine fork arm, and a second weighing sensor is installed at the trunnion support position of the cold repair turning machine. The method may include the following steps S101-S104: S101: After the ladle completes the casting operation on the casting machine, the first weight of the ladle is obtained based on the first weighing sensor on the casting machine fork arm.

[0026] S102: Perform a ladle flipping operation to obtain a ladle after the remaining molten steel has been emptied.

[0027] S103: Based on the second weighing sensor on the cold repair turning machine, obtain the second weight of the ladle after the residual molten steel is emptied.

[0028] S104: Determine the remaining weight based on the difference between the first weight and the second weight.

[0029] This invention provides a method for measuring the remaining weight of steel in a ladle. This method uses a weighing sensor installed in the cold-repair turning machine on the continuous casting production line. By utilizing weighing data from two independent stations on the continuous casting line—the casting machine and the cold-repair turning machine—the method calculates the difference between the first weight of the ladle when the casting machine stops pouring and the second weight of the ladle after the remaining weight is emptied at the cold-repair turning machine. This achieves accurate measurement of the remaining weight of the ladle. This method overcomes the accuracy bottleneck of existing single weighing systems under harsh working conditions. By cross-validating data from two stations, it eliminates measurement errors caused by fluctuations in the ladle's own weight and interference from the on-site environment. This provides a reliable data foundation for precise ladle control in the continuous casting production process, thereby ensuring the purity of high-end steel and minimizing steel waste, achieving dual optimization of quality control and production costs.

[0030] In step S101 above, after the ladle completes the casting operation on the casting machine, the first weight of the ladle is obtained based on the first weighing sensor on the casting machine fork arm.

[0031] Specifically, when the molten steel level in the continuous casting crystallizer reaches a predetermined height, or when the casting operation is about to end based on the casting speed and weight model, the sliding plate at the bottom of the ladle is closed to terminate the casting. At this time, the ladle containing the remaining molten steel (i.e., casting residue) is still stably supported by the two forks of the casting machine. At this point, based on the first weighing sensor on the casting machine fork, the weight signal output by the first weighing sensor is collected and recorded. After data processing such as filtering and temperature compensation, this signal is calculated into an accurate weight value, which is the first weight. This first weight is essentially the total weight of the current ladle, which is equal to the sum of the ladle's own weight (including the lining, attached slag, etc.) and the weight of the casting residue.

[0032] The successful acquisition of this crucial data relies on targeted technical modifications and optimizations to the casting machine fork arm weighing system. As a core component directly supporting the ladle at the casting station, the original simple support structure of the casting machine fork arm is insufficient to withstand high temperatures, impacts, and slag interference, thus failing to meet the aforementioned high-precision weighing requirements. Therefore, in this embodiment, the casting machine fork arm has undergone the following specialized design: First, a special cover plate was added to the casting machine fork arm. This cover plate is not an ordinary cover, but a structure responsible for key force transmission and protection in the ladle weight measurement system. It is precisely positioned and installed at the trunnion support position of the casting machine fork arm, that is, the contact surface between the ladle trunnion base and the casting machine fork arm. The first load cell is located between the cover plate and the casting machine fork arm body. This layout ensures that when the ladle is placed on the casting machine fork arm, its entire weight is transferred through the ladle trunnion base to the cover plate, and then from the cover plate to the first load cell on the casting machine fork arm. Finally, the first load cell converts the mechanical signal into an electrical signal, thereby obtaining the accurate first weight of the ladle.

[0033] Meanwhile, to ensure the stability and accuracy of weighing, the dimensions and structure of the cover plate in this embodiment were precisely calculated and designed. The length of the cover plate is set to be greater than the length of the ladle trunnion base; for example, the length of the cover plate is equal to the length of the ladle trunnion base plus 100 mm. This design provides an important tolerance margin, ensuring that even with slight alignment deviations when the overhead crane lifts the ladle, the ladle trunnion base can still completely cover and press against the effective force-bearing area of ​​the cover plate. This ensures that the first weighing sensor can bear the load evenly and reliably, avoiding measurement distortion caused by uneven force distribution.

[0034] Furthermore, considering the harsh working conditions of high-temperature baking and slag splashing in the casting machine area, if the falling slag accumulates on the casting machine fork arm and comes into contact with the bottom of the ladle, it will create additional supporting force, seriously interfering with the weighing results. Therefore, in this embodiment, the cover plate is made as a heavy-duty component with a significant thickness, which can be exemplarily set to 100 mm. This thickness effectively creates a safe isolation space between the ladle trunnion base and the casting machine fork arm, reliably preventing falling slag from contacting and pressing against the ladle trunnion base, ensuring that slag falling from the fork arm does not come into contact with the ladle trunnion base, thereby avoiding distortion of the weighing value due to slag interference.

[0035] In this embodiment, to achieve precise force transmission and adapt to the harsh working conditions of the casting machine area, the weighing structure of the casting machine fork arm is specifically designed. As a core component directly supporting hundreds of tons of steel ladles, the casting machine fork arm not only bears extremely high static loads but also needs to withstand the severe impacts generated when the overhead crane lifts and lowers the ladles. Therefore, this method preferentially selects a robust, high-load-bearing capacity, and excellent overload and impact resistance column-type load cell as the first weighing sensor.

[0036] The load-bearing characteristics of a column-type load cell are concentrated in the central area at the top of its columnar structure. To ensure that the weight of the ladle acts directly on this core stress point without loss or off-center loading, and is not dispersed by the cover plate, this method involves creating a through hole in the cover plate at a position directly opposite the top stress surface of the column-type load cell, with the same dimensions as the top stress surface of the load cell. This design allows the ladle trunnion base to transmit pressure directly (or through an extremely thin force-transmitting pad) to the first load cell through this through hole, thus constructing an efficient direct force transmission path and avoiding measurement distortion.

[0037] The aforementioned collaborative design of setting through holes in the cover plate constitutes the key technical means to achieve high-precision and high-reliability weighing under harsh working conditions: using a column-type load cell as the first load cell ensures the structural safety and long-term stability of this method under huge impacts, while the through holes in the cover plate ensure the accuracy and integrity of the measurement signal under the heavy protective structure, ultimately providing double protection for the core first weight data acquisition of this method.

[0038] In step S102 above, the ladle is flipped to obtain a ladle after the remaining molten steel has been emptied.

[0039] Specifically, step S102 is a necessary prerequisite for accurate calculation of the remaining molten steel weight. Its core lies in completely emptying the ladle of molten steel to prepare for obtaining a stable empty ladle weight. The implementation process is as follows: After the initial weight is collected on the casting machine's forklift, the ladle is lifted off the casting machine station by an overhead crane. The crane then transfers the ladle to a dedicated ladle-turning station on the continuous casting production line. This station is typically equipped with a powerful hydraulic ladle-turning device, designed to safely and smoothly receive and turn the ladle.

[0040] At the ladle-turning station, the ladle is placed on the ladle-turning device and reliably locked by its clamping mechanism. After confirming safety, the ladle-turning procedure is initiated. The ladle-turning device lifts the ladle and slowly rotates it around the ladle trunnion until it reaches a preset tilting angle, which can be set between 90 and 120 degrees, so that the ladle opening faces downwards. During this process, the molten steel residue inside the ladle is completely poured out under gravity and flows into a pre-placed receiving container below. This receiving container can be a dedicated ladle for receiving steel. The recovered molten steel can then be returned to the steelmaking process for reuse; if the residue has no recycling value, it is poured into a slag bin for disposal as metallurgical waste.

[0041] After the ladle-turning operation is completed, the ladle-turning device rotates in the reverse direction, restoring the emptied ladle to an upright position. At this point, there is no remaining liquid molten steel inside the ladle, making it an empty ladle containing only its own weight, refractory lining, and possibly a small amount of solid slag. This state of the ladle is the target for weighing the second weight in subsequent steps. It is important to clarify that the ladle-turning operation performed in step S102 aims to empty the liquid molten steel. Its execution location and equipment are different from the cold-repair ladle-turning machine used for weighing later. The two are strictly distinguished in function, together forming a complete process and measurement chain.

[0042] In this embodiment of the application, before performing step S103, the method further includes step S105, a slag removal operation, which specifically includes steps S1051-S1052: S1051: Controls the cold repair turning machine to deflect from a vertical position to a preset angle.

[0043] Specifically, the purpose of this step is to actively clean the force-bearing surface of the second weighing sensor of the cold-repair steel turning machine before performing precise weighing in step S103, so as to ensure the accuracy of the weighing benchmark.

[0044] Once the ladle, emptied of casting residue as obtained in step S102, is hoisted by an overhead crane to the cold repair turning machine, this slag removal operation is triggered. The cold repair turning machine is driven from its standard vertical position for load bearing to a preset angle in one direction. This preset angle is typically set to an angle that significantly tilts the sensor's load-bearing surface, such as 120 degrees or 180 degrees. During the turning process, due to vibration and gravity, solid debris such as slag and dust that may have previously adhered to, fallen off, and accumulated on the load-bearing surface of the second weighing sensor will completely detach and fall into the preset collection device.

[0045] S1052: After all debris has been removed from the second weighing sensor of the cold repair turning machine, control the cold repair turning machine to reset to the vertical state.

[0046] Specifically, after cleaning the slag and confirming that the force-bearing surface of the second weighing sensor is clean, the cold repair turning machine is controlled to rotate in the opposite direction, so that it is precisely reset from the preset angle of deflection to the standard vertical state, in order to prepare for the subsequent receiving of the ladle and weighing.

[0047] To ensure that each weighing is performed under the same and optimal vertical posture, and to guarantee the repeatability and comparability of the measurement data, in this embodiment, the cold repair turning machine is also equipped with a mechanical limiting device. When the cold repair turning machine is controlled to return to a vertical state in step S1052, the machine will make close contact with the preset mechanical limiting device or reach the preset mechanical locking position. This hard contact provides a physical absolute reference, allowing the mechanical limiting device to accurately and reliably determine that the cold repair turning machine has returned to a vertical state, effectively eliminating the reset deviation caused by hydraulic system drift or position sensor error. This design ensures that when the ladle after emptying the molten steel falls onto the cold repair turning machine, its weight is applied vertically and evenly to the second weighing sensor on the machine, which is a key guarantee for obtaining a high-precision and high-stability second weight.

[0048] In step S103 above, the second weight of the ladle after the residual molten steel is emptied is obtained based on the second weighing sensor on the cold repair turning machine.

[0049] Specifically, this step is the second key parameter in calculating the remaining casting weight. Its core lies in accurately measuring the weight of the ladle after emptying the remaining casting material in a stable environment within the cold repair turning machine area. After the ladle completes the turning operation in step S102, emptying the remaining molten steel, and is hoisted by an overhead crane to the cold repair turning machine (which has already undergone slag removal), the overhead crane smoothly and vertically places the empty ladle on the machine. At this point, the entire weight of the empty ladle is directly applied to the second weighing sensor at the trunnion support position of the cold repair turning machine through the ladle trunnion base. Based on the second weighing sensor on the cold repair turning machine, the weight signal output by the second weighing sensor is collected and recorded. After undergoing the same or similar filtering, compensation, and calculation process as when the first weight was collected, the accurate weight value obtained is the second weight. This second weight is essentially the empty weight of the ladle in its current state, which includes the ladle body, the refractory lining, and the solid steel slag adhering to the ladle walls and bottom.

[0050] The successful acquisition of this crucial data relies on the specialized modification and design of the weighing function of the cold repair turning machine in this method. Unlike the harsh environment of the casting machine area, the cold repair turning machine area provides relatively stable and clean conditions for high-precision weighing. Therefore, in this embodiment, the cold repair turning machine has undergone the following targeted design: A second load cell, which is a contact load cell, is installed at the trunnion support position of the cold repair turning machine. This type of sensor measures the load through direct contact, and its structure can be well integrated into the trunnion support structure of the cold repair turning machine.

[0051] Meanwhile, the force-bearing surface of the second load cell is designed to match the dimensions of the ladle trunnion base. For example, when the ladle trunnion base has a 500 mm × 500 mm square cross-section, the force-bearing surface of the second load cell is correspondingly set to 500 mm × 500 mm. This perfectly matched design ensures that the entire bottom surface of the ladle trunnion base can sit completely and flat on the entire force-bearing surface of the second load cell, achieving uniform force distribution. This avoids stress concentration caused by insufficient contact area, protecting the second load cell from damage and preventing measurement deviations due to uneven force distribution. This provides a solid hardware foundation for high-precision, high-repeatability measurement of the ladle weight after emptying excess molten steel.

[0052] In this embodiment, a contact-type load cell is chosen as the second load cell based on the functional positioning and weighing requirements of the cold-repair turning machine. Firstly, the cold-repair turning machine is a rotating device that needs to directly contact and support the ladle trunnion base, which naturally aligns with the physical premise of contact measurement. Secondly, unlike the casting machine area which needs to cope with molten steel and high-frequency impacts, the ladle at the cold-repair turning machine station is empty, having been emptied of residual molten steel. The operating conditions are more stable, and the main challenge lies in ensuring the repeatability of long-term measurements and resisting the mechanical effects of daily slag removal operations. Contact-type sensors, especially robust flat-plate sensors, can withstand the deflection vibrations during slag removal and provide a stable supporting plane after resetting. Their perfectly matched dimensions make the second load cell itself a reliable load-bearing platform, ensuring the ladle sits in a consistent posture each time, thus providing a crucial guarantee for achieving highly repeatable and accurate weighing.

[0053] In step S104 above, the remaining weight is determined based on the difference between the first weight and the second weight.

[0054] Specifically, this step is the final calculation stage of this method. Its core lies in extracting the final required process parameters from two directly measured physical quantities through a concise yet rigorous mathematical operation. Once the first weight (i.e., the weight of the ladle when the casting machine stops pouring) and the second weight (i.e., the weight of the ladle after the remaining molten steel is emptied and measured on the cold repair and turning machine) are accurately obtained, this method will perform a subtraction operation to obtain the remaining weight, which is equal to the first weight minus the second weight.

[0055] The logical basis of this calculation lies in the decomposition of the weight composition of the ladle under different states. The first weight is the sum of the ladle's own weight (including the ladle body, refractory lining, and attached solid slag steel) and the weight of the remaining molten steel, while the second weight is the same ladle's own weight after the remaining molten steel has been emptied. Since the two weighings are for the same ladle, its own weight can be considered constant over a short period of time. Therefore, the difference between the two is the net weight of the remaining molten steel emptied and discharged during that time interval.

[0056] Determining the remaining weight in this manner has significant advantages. It cleverly avoids the difficulties of directly measuring the weight of molten steel and eliminates the need to know or estimate a changing ladle tare weight beforehand. This method transforms measurement accuracy into the difference between the accuracy of two static total weights, both obtained at their respective optimized workstations. The first weight is captured instantly at the casting machine process node, while the second weight is accurately measured in a stable cold-maintenance environment, thus jointly ensuring the accuracy and reliability of the final remaining weight result.

[0057] The final calculated residual weight data will be automatically recorded and linked to the corresponding heat number, ladle number, and timestamp. This data will not only be used to evaluate the current process but will also serve as feedback data input into the casting machine control system. This data will be used to analyze and optimize the ladle slide closing timing model, enabling precise control of the subsequent casting process and thus consistently keeping the residual weight within the optimal range required by the process.

[0058] Example 2 Based on the same inventive concept, this embodiment of the invention also provides a device for measuring the remaining weight of a ladle casting, including a memory and a processor. The memory stores computer program instructions that can be executed by the processor. When the processor executes the computer program instructions, it implements the method for measuring the remaining weight of a ladle casting as described in Embodiment 1 above. Example 3 Based on the same inventive concept, this invention also provides a system for measuring the weight of ladle casting residue, applied to a continuous casting production line, wherein the continuous casting production line includes a casting machine and a cold repair turning machine, the casting machine includes a casting machine fork arm, and the system includes: The first weighing sensor installed at the trunnion support position of the casting machine fork arm, the second weighing sensor installed at the trunnion support position of the cold repair turning machine, and the measuring device for the remaining weight of the ladle casting as described in Embodiment 2 above.

[0059] The second weighing sensor on the cold repair turning machine is a contact weighing sensor, and the size of the force-bearing surface of the second weighing sensor is consistent with the size of the ladle trunnion base.

[0060] The first weighing sensor on the fork arm of the casting machine is a column-type weighing sensor.

[0061] A cover plate is provided on the casting machine fork arm; the cover plate is located at the trunnion support position of the casting machine fork arm; the first weighing sensor of the casting machine fork arm is located between the cover plate and the casting machine fork arm.

[0062] The length of the cover plate is greater than the length of the ladle trunnion base.

[0063] The cover plate has a through hole at a position opposite to the force-bearing surface of the first weighing sensor.

[0064] Example 4 Based on the same inventive concept, embodiments of the present invention also provide a computer-readable storage medium storing a computer program / instructions thereon, which, when executed by a processor, implements the method for measuring the residual weight of the ladle as described in Embodiment 1 above.

[0065] Example 5 Based on the same inventive concept, embodiments of the present invention also provide a computer program product, including a computer program / instruction, which, when executed by a processor, implements the method for measuring the residual weight of steel ladle casting as described in Embodiment 1 above.

[0066] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, systems, or computer program products. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage and optical storage) containing computer-usable program code.

[0067] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0068] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0069] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0070] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A method for measuring a ladle residual weight applied to a molten steel continuous casting line, characterized by, The continuous casting production line of molten steel comprises a casting machine and a cold repair tilting machine, the casting machine comprises a casting machine fork arm, a first weighing sensor is installed at a trunnion support position of the casting machine fork arm, a second weighing sensor is installed at a trunnion support position of the cold repair tilting machine, and the method comprises the following steps: After a ladle completes casting on the casting machine, a first weight of the ladle is obtained based on the first weighing sensor on the casting machine fork arm; The ladle is subjected to ladle tilting to obtain a ladle emptied of residual molten steel; A second weight of the ladle emptied of residual molten steel is obtained based on the second weighing sensor on the cold repair tilting machine; A residual weight is determined according to a difference between the first weight and the second weight.

2. The method of claim 1, wherein, Before the second weight of the ladle emptied of residual molten steel is obtained based on the second weighing sensor on the cold repair tilting machine, the method further comprises the following steps: The cold repair tilting machine is controlled to be deflected from a vertical state to a preset angle; After all sundries on the second weighing sensor of the cold repair tilting machine are completely dropped, the cold repair tilting machine is controlled to be reset to the vertical state.

3. The method of claim 2, wherein, A mechanical limiting device is arranged on the cold repair tilting machine, and the method further comprises the following steps: If the cold repair tilting machine is reset to the vertical state, the mechanical limiting device is used to determine that the cold repair tilting machine has been reset to the vertical state.

4. A ladle residual weight measuring apparatus comprising a processor and a memory, characterized by, The memory stores computer program instructions capable of being executed by the processor, and the processor executes the computer program instructions to implement the steps of the method according to any one of claims 1 to 3.

5. A measurement system of a ladle residual weight applied to a continuous casting line of molten steel, characterized by, The continuous casting production line of molten steel comprises a casting machine and a cold repair tilting machine, the casting machine comprises a casting machine fork arm, and the system comprises a first weighing sensor installed at a trunnion support position of the casting machine fork arm, a second weighing sensor installed at a trunnion support position of the cold repair tilting machine, and a measuring device for a residual weight of a ladle according to claim 4.

6. The system of claim 5, wherein, The second weighing sensor on the cold repair tilting machine is a contact type weighing sensor, and a force receiving surface size of the second weighing sensor is consistent with a size of a trunnion base of the ladle.

7. The system of claim 5, wherein, The first weighing sensor on the casting machine fork arm is a column type weighing sensor.

8. The system of claim 5, wherein, A cover plate is arranged on the casting machine fork arm, the cover plate is located at the trunnion support position of the casting machine fork arm, and the first weighing sensor of the casting machine fork arm is located between the cover plate and the casting machine fork arm.

9. The system of claim 8, wherein, The length of the cover plate is greater than the length of the trunnion base of the ladle.

10. The system of claim 8, wherein, The cover plate is provided with a through hole at a position opposite to a force receiving surface of the first weighing sensor.

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