Rapid demolding device and demolding method for blast furnace pig casting machine
By installing head rollers and a rapping mechanism on the blast furnace casting machine, combined with high-pressure hot air cleaning, segmented cooling, and graded rapping, the problem of incomplete demolding of the blast furnace casting machine was solved, achieving efficient and stable demolding effect and reducing equipment failure and maintenance costs.
Patent Information
- Application Number
- CN202511348552.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-21
- Publication Date
- 2025-11-18
AI Technical Summary
The existing demolding methods for blast furnace cast iron machines have problems such as incomplete demolding, frequent equipment failures, high maintenance costs, and high safety risks. In particular, the equipment is prone to damage in high-temperature environments and the spraying control is inaccurate, resulting in unstable chain belt operation.
By combining mechanical vibration with shotcrete pretreatment, a method is adopted to optimize the demolding process and achieve precise shotcrete spraying and vibration by installing a head roller and vibration mechanism on the head of the cast iron machine, combined with high-pressure hot air cleaning, segmented cooling, graded vibration and real-time image detection.
It increased the demolding rate to over 98%, reduced equipment downtime and maintenance costs, lowered equipment wear and safety risks, and ensured the stable operation of the cast iron machine.
Smart Images
Figure CN120961898A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of blast furnace cast iron technology, and relates to a demolding device and demolding method, particularly a rapid demolding device and demolding method for a blast furnace cast iron machine. Background Technology
[0002] In the blast furnace cast iron production process, the casting machine plays a crucial role in casting molten iron into solid iron blocks and completing the demolding and conveying processes. Traditional casting machines rely solely on spraying slurry into the mold to form an isolation layer for demolding. However, this method is subject to multiple constraints and has significant drawbacks. From the perspective of molten iron's inherent characteristics, its temperature fluctuates widely (typically between 1300-1500℃), and variations in sulfur and silicon content directly affect the stability of the isolation layer. During the slurry spraying process, unstable slurry material properties and insufficient precision in controlling the spraying pressure (typically 0.3-0.5 MPa) and spray volume (0.5-1.2 L per mold) can easily lead to uneven isolation layer thickness, ineffective isolation in some areas, and severe adhesion between the iron block and the mold.
[0003] Meanwhile, the molten iron shrinks and deforms during cooling and solidification, further intensifying the adhesion between the iron block and the cast iron mold, ultimately leading to incomplete demolding. The incompletely demolded iron block falls below the second-layer chain conveyor. As production continues, the accumulated iron block exerts an upward force on the chain conveyor, causing it to deviate from its normal operating trajectory and resulting in chain derailment. After chain derailment, the casting machine's conveying function is paralyzed, requiring a 4-8 hour shutdown to clean the accumulated iron block and reset the chain conveyor. This not only interrupts production but also increases equipment wear due to intense friction between the chain links and guide rails (normal wear is 0.1-0.2 mm / month, but after a malfunction, wear can reach 0.5-1 mm / time), increasing maintenance costs. Furthermore, safety risks such as iron splashing and molten iron leakage also significantly increase.
[0004] Existing technologies, while attempting to install a vibratory motor at the bottom of the cast iron mold or using a pneumatic ejector mechanism to assist demolding, suffer from several drawbacks. Vibratory motors are prone to slip ring damage and motor failure in the 500-800℃ working environment of the cast iron mold, and the vibration frequency (50-100Hz) and amplitude (0.5-1mm) are difficult to precisely match the demolding requirements. Pneumatic ejector mechanisms require complex piping and control components arranged below the chain belt; these components are prone to aging at high temperatures, and the alignment accuracy between the ejector and the cast iron mold is extremely high (error must be less than 2mm). In practical applications, misalignment can easily occur, damaging the equipment. Neither approach can achieve stable and efficient demolding. Therefore, there is an urgent need to improve existing demolding processes to address these technical challenges. Summary of the Invention
[0005] The purpose of this invention is to overcome the shortcomings of existing technologies, such as poor demolding effect, frequent equipment failures, high maintenance costs, and high safety risks. It provides a rapid demolding device and method for blast furnace iron casting machines that has a reasonable process design, high demolding efficiency, stable operation, low cost, and strong safety. By optimizing the process flow and combining mechanical vibration and shotcrete pretreatment, it achieves thorough demolding and ensures continuous operation of the iron casting machine.
[0006] The technical problem solved by this invention is achieved through the following technical solution: A rapid demolding device for a blast furnace casting iron machine is characterized by comprising a head roller and a vibrating mechanism. The head roller is installed on the side of the casting iron machine head. The head roller includes a wheel body and a stop bar evenly distributed on the side of the wheel body at circumferential intervals. The wheel body has a structure with teeth spaced at intervals on its outer edge. The teeth are configured to cooperate with the stop bar provided on the chain link of the casting iron machine head. The vibrating mechanism includes mounting columns, a rotating shaft, a swing arm, a connecting plate, a vibrating rod, and a vibrating hammer. Mounting columns are symmetrically installed on both sides of the front end of the casting iron machine head. A rotating shaft is rotatably mounted on the top of the two mounting columns via bearings. A vibrating rod is fixedly mounted in the middle of the rotating shaft via a connecting plate. A vibrating hammer is installed at the bottom of the vibrating rod. A swing arm is fixedly mounted on one side of the rotating shaft, and the end of the swing arm is abutted against the stop bar.
[0007] Furthermore, the swing arm includes a connecting part and a driving part located at the lower end of the connecting part. The rear end face of the driving part is an arc-shaped structure, which is connected to the stop bar.
[0008] Moreover, the vibrating hammer head is a horizontally arranged plate structure. The front end of the upper surface of the plate is welded to the bottom of the vibrating rod, and the rear end of the plate is provided with several vibrating protrusions at intervals. Each vibrating protrusion is located in the middle of each mold groove of the cast iron mold on the cast iron machine.
[0009] Furthermore, it also includes reinforcing plates, which are evenly distributed at intervals on the upper surface of the vibratory hammer head.
[0010] A rapid demolding method for a blast furnace iron casting machine, characterized by the following steps: Step 1: Use high-pressure hot air to blow away impurities from the inner wall of the cast iron mold and check the mold temperature to 150-200℃; spray grout in a quantitative manner according to the number of mold slots, with a grouting pressure of 0.5-0.7MPa, and let it stand for 30-60 seconds after spraying to form an isolation film. Step 2: After the molten iron has stood for 10-15 minutes, it is poured in a stepped manner, first at a low speed, then at a higher speed, and finally at a lower speed. After pouring, it is cooled in sections, first by natural ventilation, then by forced air cooling, and finally by natural cooling to 500-600℃. Step 3: As the casting machine runs, when the molten iron reaches the head of the machine, the mold temperature reaches 500-600℃. At this time, the vibration is triggered. The vibration intensity is set according to the composition of the molten iron and the number of times the casting mold has been used. The vibration protrusions strike the middle of the mold groove simultaneously. Step 4: The industrial camera detects the iron block residue. If the residue exceeds 5%, it is vibrated a second time. If it is still residue, it is cleaned manually. Step 5: Regularly maintain the rapping and shotcreting system, analyze the data, and adaptively optimize the process parameters.
[0011] Furthermore, in step 1, the high-pressure hot air pressure is 0.4-0.6MPa and the air temperature is 80-120℃; the spray volume is calculated based on the mold cavity volume, with 0.8-1.0mL of spray volume corresponding to each liter of mold cavity volume, the nozzle moving speed is 50-80mm / s, and the isolation membrane thickness is 0.1-0.2mm.
[0012] Furthermore, in step 2, the initial pouring speed of molten iron is 0.5-0.8 L / s, the speed is increased to 1.0-1.2 L / s when the molten iron in the mold reaches 1 / 3 of the volume, and the speed is reduced to 0.3-0.5 L / s before the mold is full; the forced air cooling temperature is 20-40℃ and the air speed is 3-5 m / s.
[0013] Furthermore, in step 3, the method for setting the graded vibration intensity based on the composition of molten iron and the number of times the cast iron mold has been used is as follows: the amplitude of the vibration hammer head is adjusted by adjusting the position of the stop bar on the machine head roller; the vibration intensity is adjusted by replacing vibration rods and vibration hammer heads of different weights.
[0014] Furthermore, in step 3, the vibration frequency is 1-2 times / modulus, the vibration force is 15-20kN for level 1, 20-25kN for level 2, and 25-30kN for level 3. The vibration protrusion is a trapezoidal structure with an upper bottom of 15-20mm, a lower bottom of 25-30mm, and a height of 20-25mm.
[0015] Furthermore, in step 4, the secondary vibration force is increased by one level, the impact duration is increased by 0.5-1 second, and the industrial camera resolution is 1920×1080 with a frame rate of 30fps.
[0016] Furthermore, in step 5, the rapping mechanism is maintained every 100 hours of operation, and the shotcrete system is maintained every 500 hours; the system data is analyzed every 7 days, and the parameters are optimized using the gradient descent algorithm.
[0017] The advantages and beneficial effects of this invention are as follows: 1. The rapid demolding device of this blast furnace casting iron machine optimizes the pre-treatment process before demolding, increasing the impurity removal rate of the inner wall of the casting iron mold to over 95% and improving the uniformity of the isolation layer. Combined with segmented cooling and graded vibration processes, the demolding rate of iron blocks is increased from 70%-80% in the traditional method to over 98%, completely solving the problem of incomplete demolding.
[0018] 2. The rapid demolding device and demolding method of this blast furnace casting machine, and the improvement of the vibration demolding process, avoid the chain derailment caused by the accumulation of iron blocks, improve the stability of chain operation, reduce equipment downtime from 4-8 hours per month to 0-1 hour, reduce the wear of chain links and guide rails by more than 60%, extend service life by 3-5 times, and reduce equipment maintenance costs by 70%.
[0019] 3. The rapid demolding device of this blast furnace casting machine employs a demolding method with precise timing and force control of vibration, reducing the risk of iron splashing; real-time image detection and secondary processing technology prevent equipment jamming or molten iron leakage accidents caused by residual iron blocks; and regular maintenance ensures stable equipment operation and effectively guarantees the personal safety of operators and the safety of equipment operation.
[0020] 4. The rapid demolding device of this blast furnace casting machine features a demolding method with graded vibration intensity and adaptive parameter optimization. The process parameters can be adjusted according to changes in molten iron composition and the usage status of the cast iron mold, making it suitable for demolding needs under different working conditions. The multi-point synchronous vibration and precise slurry spraying process can be adapted to cast iron molds with different numbers and sizes of mold slots. It does not require large-scale equipment modification, has strong compatibility, and can be promoted and applied on various types of blast furnace casting machines. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a side view of the invention (the outer mounting column is omitted). Figure 3 This is a top view of the Zhenda hammerhead of the present invention.
[0022] Figure Labels 1-Connecting plate, 2-Vibrating rod, 3-Mounting column, 4-Vibrating hammer head, 5-Reinforcing triangular plate, 6-Swing arm, 7-Pulling lever, 8-Chain belt, 9-Pulling teeth, 10-Head roller, 11-Stop bar, 12-Rotating shaft, 13-Cast iron mold, 14-Vibrating protrusion. Detailed Implementation
[0023] The present invention will be further described in detail below through specific embodiments. The following embodiments are merely descriptive and not limiting, and should not be used to limit the scope of protection of the present invention.
[0024] An innovative feature of a rapid demolding device for a blast furnace casting iron machine is that it includes a head roller and a vibrating mechanism. The head roller is installed on the side of the casting iron machine head. The head roller includes a wheel body and a stop bar evenly distributed on the side of the wheel body at circumferential intervals. The wheel body has a structure with teeth spaced at intervals on the outer edge. The teeth are configured to cooperate with the stop bar set on the chain link of the casting iron machine head. The vibration mechanism includes mounting columns, a rotating shaft, a swing arm, a connecting plate, a vibration rod, and a vibration hammer. Mounting columns are symmetrically installed on both sides of the front end of the cast iron machine head. A rotating shaft is rotatably installed on the top of the two mounting columns via bearings. A vibration rod is fixedly installed in the middle of the rotating shaft via a connecting plate. A vibration hammer is installed at the bottom of the vibration rod. A swing arm is fixedly installed on one side of the rotating shaft, and the end of the swing arm is abutted on a stop bar. The swing arm includes a connecting part and a driving part located at the lower end of the connecting part. The rear end face of the driving part is an arc-shaped structure, which is connected to the stop bar. The vibrating hammer head is a horizontally arranged plate structure. The front end of the upper end face of the plate is welded to the bottom of the vibrating rod. The rear end of the plate is provided with a number of vibrating protrusions at intervals. Each vibrating protrusion is located in the middle of each mold groove of the cast iron mold on the cast iron machine. It also includes reinforcing plates. Reinforcing plates are evenly distributed at intervals on the upper end face of the vibrating hammer head. A reinforcing triangular plate is provided in front of each mounting column to enhance the stability of the mounting column.
[0025] Based on the aforementioned rapid demolding device for blast furnace casting machines, this invention improves the demolding process, and its innovation lies in the following steps: Optimization of pretreatment process before demolding Surface cleaning of cast iron molds: Before each cycle of use, the inner wall of the cast iron mold is cleaned with high-pressure hot air (0.4-0.6 MPa, 80-120℃) to remove residual slag, dust, and other impurities. Compared to traditional natural cleaning methods, high-pressure hot air can increase the removal rate of impurities in the mold to over 95%, preventing impurities from affecting the adhesion of the isolation layer. After cleaning, the temperature of the inner wall of the cast iron mold is monitored using an infrared thermometer to ensure that the temperature drops to 150-200℃. This temperature range allows the subsequently sprayed isolation layer to cure quickly and prevents carbonization of the isolation layer due to excessively high mold temperature.
[0026] Precise grouting process control: Based on the number and size of the cast iron mold slots (3 in this example), a zoned quantitative grouting method is adopted. The grouting pipeline is divided into branches corresponding to the number of mold slots. Each branch is equipped with an independent fan-shaped atomizing nozzle (spray angle 60°-90°, atomized particle diameter 50-80μm) to ensure that the inner wall of each mold slot is evenly covered with grout. The grouting pressure is controlled at 0.5-0.7MPa, and the grouting volume is calculated based on the mold slot volume, with 0.8-1.0mL of grout per liter of mold slot volume. During the grouting process, the nozzle is moved at a uniform speed (50-80mm / s) to avoid local grout accumulation or leakage. After grouting, it is left to stand for 30-60 seconds to allow the isolation layer to fully solidify, forming a uniform 0.1-0.2mm thick isolation film, effectively reducing the initial adhesion between the iron block and the mold wall.
[0027] Synergy of molten iron pouring and cooling processes Stepped pouring control: After molten iron is tapped from the blast furnace, it is first allowed to stand in the ladle for 10-15 minutes to allow impurities to float to the surface and stabilize the temperature at 1400-1450℃. During pouring, a stepped pouring speed is adopted. In the initial stage, the molten iron is poured into the cast iron mold at a low speed of 0.5-0.8 L / s to avoid excessive impact that could damage the isolation layer. When the molten iron in the mold reaches 1 / 3 of the mold cavity volume, the pouring speed is increased to 1.0-1.2 L / s to accelerate the pouring efficiency. When the mold cavity is nearly full, the speed is reduced again to 0.3-0.5 L / s to prevent overflow. This process reduces the impact damage of the molten iron to the isolation layer while ensuring the quality of the pouring.
[0028] Segmented cooling process: After the molten iron is poured, a segmented cooling method is adopted. The first stage (0-5 minutes) uses natural ventilation to quickly form a solid outer shell on the surface of the molten iron, preventing deformation of the iron block during subsequent cooling. The second stage (5-15 minutes) activates the forced air cooling system, using temperature-adjustable cold air (20-40℃, wind speed 3-5m / s) to uniformly cool the cast iron mold. Temperature sensors monitor the temperature of the molten iron inside the mold in real time. When the temperature drops to 800-900℃, the forced air cooling is turned off. The third stage (15-25 minutes) switches back to natural cooling, allowing the molten iron temperature to slowly drop to 500-600℃ (the optimal demolding temperature). Segmented cooling prevents cracking of the cast iron mold due to excessively rapid cooling, while ensuring the stability of the internal structure of the iron block and reducing adhesion to the mold wall.
[0029] Improved Vibratory Demolding Process Precise timing control of rapping: Temperature sensors installed on the sidewalls of the cast iron mold collect mold temperature data in real time. When the mold temperature drops to 500-600℃, the system automatically triggers the rapping demolding program. At this time, the adhesion between the iron block and the cast iron mold is minimal, and the iron block is strong enough to withstand the rapping impact, avoiding premature rapping that could cause deformation of the iron block, or premature rapping that could increase adhesion difficulty. Simultaneously, combined with the chain belt running speed (typically 0.5-1.0 m / min), the PLC controller calculates the rapping interval time, ensuring that the rapping mechanism completes exactly one rapping action when each cast iron mold reaches the demolding position, and the rapping frequency perfectly matches the production rhythm of the cast iron machine (usually 1-2 times / mold).
[0030] Graded vibration intensity control: The vibration intensity is set according to the composition of the molten iron (mainly sulfur and silicon content) and the number of times the cast iron mold has been used. When the sulfur content of the molten iron is less than 0.05% and the number of times the cast iron mold has been used is less than 50, the first-level vibration intensity is used (the impact force is controlled at 15-20kN by adjusting the weight of the vibration hammer or raising its height); when the sulfur content of the molten iron is between 0.05% and 0.1% or the number of times the cast iron mold has been used is 50-100, the second-level vibration intensity is used (impact force 20-25kN); when the sulfur content of the molten iron is higher than 0.1% or the number of times the cast iron mold has been used is more than 100, the third-level vibration intensity is used (impact force 25-30kN). Graded vibration can avoid incomplete demolding due to insufficient intensity or damage to the cast iron mold due to excessive intensity.
[0031] Multi-point synchronous vibration: Utilizing vibration protrusions on the vibration hammer head that correspond to the number of mold slots, multi-point synchronous vibration is achieved. The vibration protrusions are precisely positioned to align with the center of each mold slot in the cast iron mold (adjusted via laser alignment, with an error of less than 2mm). During vibration, each protrusion simultaneously applies impact force to the mold slot, ensuring uniform vibration of the iron block and preventing uneven force distribution and residue buildup caused by single-point vibration. Furthermore, the vibration protrusions employ a trapezoidal structure (upper base 15-20mm, lower base 25-30mm, height 20-25mm), increasing the contact area with the mold slot, reducing localized impact damage, and extending the service life of the cast iron mold.
[0032] Post-demolding inspection and secondary processing Real-time image detection: An industrial camera (1920×1080 resolution, 30fps) is installed in front of the casting machine head. After the casting mold completes vibration demolding, the industrial camera takes pictures of the inner wall of the mold cavity. The image is analyzed by an image recognition algorithm (using edge detection and grayscale comparison technology) to determine whether there are any iron blocks remaining in the mold cavity. If the detected residual area exceeds 5%, the system immediately issues a warning signal and controls the chain conveyor to stop running; if the residual area is less than 5%, the demolding is deemed qualified, and the chain conveyor continues to run.
[0033] Secondary vibration correction: For cast iron molds with detected iron residue, the system automatically initiates a secondary vibration program. During the secondary vibration, the vibration intensity is increased by one level (e.g., changing the original level one intensity to level two intensity), and the fall time of the vibration hammer is extended (achieved by fine-tuning the swing arm length), increasing the duration of impact force by 0.5-1 second to enhance the vibration effect. After the secondary vibration is completed, the industrial camera takes another picture for inspection. If the residue problem is still not resolved, the system issues a "manual cleaning" alarm, prompting the operator to use special tools (such as a high-temperature resistant scraper) to clean the mold, preventing residual iron from circulating with the cast iron mold into the next process and affecting subsequent production.
[0034] Equipment maintenance and process parameter optimization Regular maintenance process: Establish a periodic maintenance plan. Every 100 hours of operation, inspect and maintain the rapping mechanism, including: cleaning iron filings from the contact area between the stop bar and the swing arm; applying high-temperature grease (temperature range -20-600℃) to ensure smooth contact; checking the wear of the rapping hammers; replacing the rapping hammers when the wear exceeds 5mm; calibrating the detection accuracy of the temperature sensor and industrial camera to ensure accurate data acquisition. Every 500 hours of operation, maintain the shotcrete system, including: cleaning the shotcrete tank and shotcrete pipeline to prevent shotcrete sedimentation and blockage; replacing the sealing rings of the atomizing nozzles to prevent shotcrete leakage; adjusting the shotcrete pressure and flow rate to ensure stable shotcrete parameters.
[0035] Adaptive optimization of process parameters: The PLC controller records the process parameters (such as spray volume, cooling time, and vibration intensity) and demolding effects (such as residual rate and iron block integrity) for each demolding, establishing a parameter-effect database. The system analyzes the database data periodically (every 7 days) and uses a gradient descent algorithm to optimize process parameters. For example, if the demolding residual rate increases within a certain period, the system automatically adjusts the spray volume (increasing it by 0.1-0.2 mL / liter of mold tank volume) or the vibration intensity (increasing it by 5%-10%), and verifies the optimization effect through subsequent production, gradually achieving adaptive adjustment of process parameters to ensure long-term stable demolding efficiency.
[0036] After applying the improved demolding process method, the demolding rate of iron blocks remained stable at over 99%. No chain derailment occurred during three months of continuous operation. Equipment maintenance costs were reduced by 72% compared to the traditional process. No safety accidents such as iron block splashing or molten iron leakage occurred, fully meeting the high efficiency, stability, and safety requirements of blast furnace cast iron production.
[0037] Although embodiments and drawings of the present invention have been disclosed for illustrative purposes, those skilled in the art will understand that various substitutions, variations and modifications are possible without departing from the spirit and scope of the present invention and the appended claims. Therefore, the scope of the present invention is not limited to the contents disclosed in the embodiments and drawings.
Claims
1. A rapid demolding device for a blast furnace iron casting machine, characterized in that: The machine includes a head roller and a rapping mechanism. The head roller is installed on the side of the cast iron machine head. The head roller includes a wheel body and a stop bar evenly distributed on the side of the wheel body at circumferential intervals. The wheel body has a structure with teeth spaced at intervals on the outer edge. The teeth are configured to cooperate with the stop bar set on the chain link of the cast iron machine head. The rapping mechanism includes mounting columns, a rotating shaft, a swing arm, a connecting plate, a rapping rod, and a rapping hammer. Mounting columns are symmetrically installed on both sides of the front end of the cast iron machine head. A rotating shaft is rotatably installed on the top of the two mounting columns through bearings. A rapping rod is fixed in the middle of the rotating shaft through a connecting plate. A rapping hammer is installed at the bottom of the rapping rod. A swing arm is fixed on one side of the rotating shaft, and the end of the swing arm is connected to the stop bar.
2. The rapid demolding device for a blast furnace casting machine according to claim 1, characterized in that: The swing arm includes a connecting part and a driving part located at the lower end of the connecting part. The rear end face of the driving part is an arc-shaped structure, which is connected to the stop bar.
3. The rapid demolding device for a blast furnace casting machine according to claim 1, characterized in that: The vibrating hammer head is a horizontally arranged plate structure. The front end of the upper surface of the plate is welded to the bottom of the vibrating rod. The rear end of the plate is provided with several vibrating protrusions at intervals. Each vibrating protrusion is located in the middle of each mold groove of the cast iron mold on the cast iron machine.
4. The rapid demolding device for a blast furnace casting machine according to claim 3, characterized in that: It also includes reinforcing plates, which are evenly distributed at intervals on the upper surface of the vibratory hammer head.
5. A demolding method based on the rapid demolding device of the blast furnace casting machine according to any one of claims 1-4, characterized in that: Includes the following steps: Step 1: Use high-pressure hot air to blow away impurities from the inner wall of the cast iron mold and check the mold temperature to 150-200℃; spray grout in a quantitative manner according to the number of mold slots, with a grouting pressure of 0.5-0.7MPa, and let it stand for 30-60 seconds after spraying to form an isolation film. Step 2: After the molten iron has stood for 10-15 minutes, it is poured in a stepped manner, first at a low speed, then at a higher speed, and finally at a lower speed. After pouring, it is cooled in sections, first by natural ventilation, then by forced air cooling, and finally by natural cooling to 500-600℃. Step 3: As the casting machine runs, when the molten iron reaches the head of the machine, the mold temperature reaches 500-600℃. At this time, the vibration is triggered. The vibration intensity is set according to the composition of the molten iron and the number of times the casting mold has been used. The vibration protrusions strike the middle of the mold groove simultaneously. Step 4: The industrial camera detects the iron block residue. If the residue exceeds 5%, it is vibrated a second time. If it is still residue, it is cleaned manually. Step 5: Regularly maintain the rapping and shotcreting system, analyze the data, and adaptively optimize the process parameters.
6. The demolding method of the rapid demolding device for a blast furnace casting machine according to claim 5, characterized in that: In step 1, the high-pressure hot air pressure is 0.4-0.6MPa and the air temperature is 80-120℃; the spray volume is calculated based on the mold cavity volume, with 0.8-1.0mL of spray volume corresponding to each liter of mold cavity volume; the nozzle moving speed is 50-80mm / s; and the isolation membrane thickness is 0.1-0.2mm.
7. The demolding method of the rapid demolding device for a blast furnace casting machine according to claim 5, characterized in that: In step 2, the initial pouring speed of molten iron is 0.5-0.8 L / s, the speed is increased to 1.0-1.2 L / s when the molten iron in the mold reaches 1 / 3 of the volume, and the speed is reduced to 0.3-0.5 L / s before the mold is full; the forced air cooling temperature is 20-40℃ and the air speed is 3-5 m / s.
8. The demolding method of the rapid demolding device for a blast furnace casting machine according to claim 5, characterized in that: In step 3, the method for setting the graded vibration intensity based on the composition of molten iron and the number of times the cast iron mold has been used is as follows: the amplitude of the vibration hammer head is adjusted by adjusting the position of the stop bar on the machine head roller; the vibration intensity is adjusted by replacing vibration rods and vibration hammer heads of different weights.
9. The demolding method of the rapid demolding device for a blast furnace casting machine according to claim 5, characterized in that: In step 3, the vibration frequency is 1-2 times / modulus, the vibration force is 15-20kN for level 1, 20-25kN for level 2, and 25-30kN for level 3. The vibration protrusion is a trapezoidal structure with an upper bottom of 15-20mm, a lower bottom of 25-30mm, and a height of 20-25mm.
10. The demolding method of the rapid demolding device for a blast furnace casting machine according to claim 5, characterized in that: In step 4, the secondary vibration force is increased by one level, the impact duration is increased by 0.5-1 second, and the industrial camera resolution is 1920×1080 with a frame rate of 30fps.