Mold casting automatic control method and control mechanism thereof

Abstract

The application discloses a mold casting automatic control method and a control mechanism thereof. The control method comprises comparing the size of the molten steel temperature and the preset casting temperature, controlling the hydraulic mechanism to open the slide plate mechanism through the slide plate connecting rod mechanism, and controlling the casting speed; comparing the size of the molten steel weight and the preset weight, and comparing the size of the actual vibration value of the slide plate connecting rod mechanism and the preset vibration value; the automatic control mechanism comprises a casting trolley body (1), a weighing platform (11) is arranged on the casting trolley body (1), a ladle (2) is placed on the weighing platform (11), a temperature detector is arranged in the ladle (2), an upper water inlet (21) is arranged at the bottom of the ladle (2), a slide plate mechanism is arranged at the bottom of the upper water inlet (21), and the slide plate mechanism is detachably connected with a hydraulic mechanism through a slide plate connecting rod mechanism (3) penetrating through the casting trolley body (1). The application has the characteristics of high casting control precision and high safety.

Description

Technical Field

[0001] This invention relates to a metal casting control mechanism, and more particularly to an automatic control method and control mechanism for die casting of steel. Background Technology

[0002] In the casting process, the casting speed is one of the key technical indicators. The casting speed affects the surface quality of the steel ingot. Fluctuations in the casting speed can cause defects such as slag entrapment, longitudinal cracks, and shrinkage cavities on the surface of the steel ingot. In order to ensure the stability of the steel ingot quality, the flow rate of molten steel during casting must be stable, and the rising speed of molten steel in the steel ingot mold must be stable.

[0003] Most existing casting processes control the flow rate of molten steel by controlling the size of the casting outlet. However, in ingot casting, the flow rate of the ladle outlet is affected by the static pressure of the molten steel inside the ladle. As the molten steel level in the ladle decreases, the static pressure also decreases, and the flow rate of molten steel at the outlet also decreases accordingly. This has a significant impact on the actual flow rate of molten steel, resulting in a phenomenon where the molten steel flow rate becomes slower and slower during the actual casting process.

[0004] Traditional steel casting methods typically involve connecting a transmission mechanism to a slide mechanism. The transmission mechanism moves the slide mechanism, thereby controlling the opening of the sprue and adjusting the casting speed. However, in this control structure, the transmission mechanism is usually fixed to the ladle, and the high temperature of the ladle can easily damage the transmission mechanism. Alternatively, the slide mechanism can be controlled manually using levers, but manual operation lacks accuracy and results in poor precision in controlling the casting speed. Summary of the Invention

[0005] The purpose of this invention is to provide an automatic control method and control mechanism for ingot casting of steel. This invention features high precision and high safety in steel casting control.

[0006] The technical solution of this invention: an automatic control method for ingot casting of steel, comprising the following steps:

[0007] S1. Monitor the temperature of molten steel in real time and compare the molten steel temperature with the preset value of the casting temperature;

[0008] S2. If the molten steel temperature equals the preset casting temperature, the hydraulic mechanism is controlled to open the slide mechanism via the slide linkage mechanism to control the steel pouring speed; if the molten steel temperature is greater than the preset casting temperature, the argon gas flow rate is adjusted to lower the molten steel temperature until it reaches the preset casting temperature; if the molten steel temperature is less than the preset casting temperature, the steel is returned to the furnace.

[0009] S3. Monitor the weight of molten steel in real time and compare the weight of molten steel with the preset weight value;

[0010] S4. If the weight of molten steel is less than or equal to the preset weight value, a signal indicating that the casting is about to end is triggered. The hydraulic mechanism and the sliding plate linkage mechanism drive the sliding plate mechanism to reduce the gate opening value. If the weight of molten steel is greater than the preset weight value, the casting operation continues.

[0011] S5. Based on the signal that the casting is about to end, compare the actual vibration value of the slide linkage mechanism with the preset vibration value.

[0012] S6. If the actual vibration value is greater than or equal to the preset vibration value, the sprue is closed, the argon gas is shut off, and an alarm is triggered. If the actual vibration value is less than the preset vibration value and the molten steel weight is greater than the preset weight value, the sprue is closed, the argon gas is shut off, and the ladle car proceeds to the next casting process.

[0013] In the above-mentioned automatic control method for casting steel, in step S2, the ladle opening is controlled by the slide mechanism to be 85-95mm in the early stage of casting, 75-85mm in the middle stage of casting, and 40-50mm in the later stage of casting.

[0014] An automatic control mechanism for casting steel in molds, used to implement the above-mentioned control method, includes a casting car body, a weighing platform on the casting car body, a ladle placed on the weighing platform, a temperature detector inside the ladle, a water inlet at the bottom of the ladle, a sliding plate mechanism at the bottom of the water inlet, and the sliding plate mechanism being detachably connected to a hydraulic mechanism via a sliding plate linkage mechanism passing through the casting car body.

[0015] In the aforementioned automatic control mechanism for casting steel, the slide plate mechanism includes an upper slide plate fixed to the ladle, a lower slide plate slidably connected to the bottom of the upper slide plate, a drain outlet connected to the bottom of the lower slide plate, and a drain outlet provided on both the upper slide plate and the lower slide plate. One end of the lower slide plate is connected to the slide plate linkage mechanism.

[0016] In the aforementioned automatic control mechanism for die casting steel, the slide linkage mechanism includes a first link and a second link. One end of the first link is connected to the slide mechanism, and the other end of the first link is connected to one end of the second link through a first connector. The other end of the second link is connected to the output shaft of the hydraulic mechanism through a second connector.

[0017] In the aforementioned automatic control mechanism for casting steel, both the first and second connecting parts include a connector. One end of the connector is provided with a threaded groove, and the end of the first connecting rod and the end of the output shaft of the hydraulic mechanism are provided with threaded sections. The threaded sections are threadedly connected to the threaded groove. The other end of the connector is provided with a U-shaped groove for connecting the second connecting rod. The U-shaped groove is provided with symmetrical through-holes, and the through-holes are provided with pins that pass through the second connecting rod.

[0018] In the aforementioned automatic control mechanism for die casting steel pouring, a mounting platform is provided on one side of the steel pouring car body, a hydraulic mechanism is mounted on the mounting platform, and several protective layers are provided at the bottom of the mounting platform.

[0019] In the aforementioned automatic control mechanism for die casting steel, the hydraulic mechanism includes a hydraulic cylinder, which is connected to a hydraulic station via a hydraulic pipe. A hydraulic proportional valve is provided on the hydraulic pipe, and water-glycol hydraulic oil is used in the hydraulic station.

[0020] In the aforementioned automatic control mechanism for die casting of steel, the slide linkage mechanism is equipped with a vibration monitor and a displacement sensor, both of which are connected to the control unit and the alarm unit.

[0021] In the aforementioned automatic control mechanism for casting steel, the ladle is also equipped with an argon gas inlet pipe, and the argon gas inlet pipe is equipped with a solenoid valve.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0023] The present invention provides a method for automatically controlling the ladle casting speed. Based on real-time online monitoring of molten steel weight and temperature, it enables temperature and speed control during the casting of special steel grades (nickel-based alloy steel, high-temperature alloy steel, special duplex stainless steel, ultra-low nitrogen steel, aircraft carrier nuclear power steel, valve steel, spring steel, etc.), improving casting efficiency and product quality. A hydraulic mechanism is used to open the slide mechanism via a slide linkage, controlling the casting speed with high precision and safety.

[0024] The automatic control mechanism for casting steel in this invention utilizes a hydraulic mechanism and a sliding plate linkage structure connected to the sliding plate mechanism. Driven by the hydraulic mechanism, the sliding plate mechanism opens the passage of the water inlet, thus achieving automatic steel casting with high precision.

[0025] The sliding plate linkage mechanism and hydraulic cylinder are far from the ladle, and are isolated by the steel pouring car body to avoid equipment damage and personnel injury caused by excessive temperature or steel leakage during steel pouring. In addition, the sliding plate mechanism and the hydraulic mechanism are detachably connected. When the ladle needs to be removed, the sliding plate mechanism can be separated from the hydraulic mechanism without disassembling the hydraulic mechanism, which makes it convenient and quick to remove the ladle. The operation is simple and safe. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the automatic control mechanism for the die casting of steel according to the present invention;

[0027] Figure 2 yes Figure 1 Enlarged view of the local structure at point A in the image;

[0028] Figure 3 This is a schematic diagram of the sliding plate linkage mechanism;

[0029] Figure 4 This is a schematic diagram of the second link adjustment structure;

[0030] Figure 5 This is a structural schematic diagram of the first connector.

[0031] The labels in the attached diagram are as follows: 1. Steel casting car body; 11. Weighing platform; 12. Steel ladle positioning groove; 13. Installation platform; 14. Protective layer; 2. Steel ladle; 21. Inlet; 22. Upper sliding plate; 23. Lower sliding plate; 24. Outlet; 25. Outlet; 26. Argon gas inlet pipe; 27. Solenoid valve; 3. Sliding plate linkage mechanism; 31. First connecting rod; 32. Second connecting rod; 321. First connecting piece; 322. Second connecting piece; 33. Connector; 34. Threaded groove; 35. Threaded section; 36. U-shaped groove; 37. Insertion hole; 38. Pin; 39. Vibration monitor; 391. Displacement sensor; 4. Hydraulic cylinder; 41. Hydraulic pipe; 42. Hydraulic station; 43. Hydraulic proportional valve. Detailed Implementation

[0032] The present invention will be further described below with reference to embodiments, but these embodiments are not intended to limit the scope of the invention.

[0033] Example:

[0034] An automatic control method for an automatic control mechanism in ingot casting includes the following steps:

[0035] Initially, after the molten steel in the ladle arrives, the argon gas pipeline connecting the ladle and the temperature measuring plug of the temperature detector are connected.

[0036] S1. Monitor the temperature of molten steel in real time and compare the molten steel temperature with the preset value of the casting temperature;

[0037] S2. If the molten steel temperature equals the preset casting temperature, then the hydraulic control mechanism opens the slide mechanism via the slide linkage mechanism 3, and the pouring speed is controlled according to the steel grade's process. The relationship between the pouring speed and the molten steel temperature is as follows: Where ΔT represents the temperature drop of the molten steel (°C), V represents the pouring speed (tons / minute), and k1 and k2 represent constants; the faster the pouring speed, the less the molten steel cools down.

[0038] The ladle opening is 85-95mm in the early stage of steel casting, 75-85mm in the middle stage of steel casting, and 40-50mm in the later stage of steel casting. When the diameter of the ladle opening is 50mm, the steel casting speed is 1 ton / minute.

[0039] The early stage of steel pouring is from the start of pouring to 5 minutes of pouring; the middle stage of steel pouring is from 5 minutes after the start of pouring until the weight of the ladle equals the preset weight value; and the late stage of steel pouring is from the moment when the weight of the ladle is less than the preset weight value to the final moment.

[0040] If the molten steel temperature exceeds the preset casting temperature, the argon solenoid valve opens. The system adjusts the argon flow rate using the flow control closed loop and position closed loop based on the deviation calculation, lowering the molten steel temperature until it reaches the preset casting temperature. If the molten steel temperature is too low, its fluidity will decrease, resulting in slower casting and a high risk of freezing. If the molten steel temperature is too high, the casting temperature will be too high, causing cracks on the ingot surface and excessive impurities. At a suitable molten steel temperature, the better the fluidity, the easier it is for the argon gas to rise, increasing the casting flow rate and facilitating casting. Once casting begins, the argon control loop is disconnected and no longer participates in control.

[0041] If the molten steel temperature is lower than the preset casting temperature, the ladle is hoisted back to the ladle refining furnace for reheating and remelting. Once the molten steel temperature reaches the liquidus temperature of the steel grade (plus the temperature loss), it is hoisted back to the ladle car for recasting.

[0042] S3. Monitor the weight of molten steel in real time and compare the weight of molten steel with the preset weight value;

[0043] S4. If the weight of the molten steel is less than or equal to the preset weight value, it indicates that the molten steel is about to run out, triggering a signal indicating that the casting is about to end. The hydraulic mechanism and slide linkage mechanism then drive the slide mechanism to reduce the gate opening value, and an audible and visual alarm is activated to alert the operator. If the weight of the molten steel is greater than the preset weight value, the casting operation continues. Simultaneously, a displacement sensor provides feedback on the movement distance of the slide mechanism to ensure accurate movement.

[0044] S5. Real-time monitoring of the actual vibration value of the slide linkage mechanism. When a signal indicating that the steel pouring is about to end is received, the actual vibration value of the slide linkage mechanism is compared with the preset vibration value.

[0045] S6. If the actual vibration value is greater than or equal to the preset vibration value, it means that there is no remaining steel and what remains is mostly slag. Then, close the ladle nozzle to indicate that the steel casting is complete and output an alarm to remind the steel casting operator to pay attention. If the vibration value is less than the preset vibration value and the weight of the molten steel is greater than the preset weight value, close the nozzle, and the ladle car moves to the next mold to complete the casting action of the current product and enter the next casting action, repeating steps S1-S6.

[0046] like Figures 1-5As shown, an automatic control mechanism for ingot casting includes a casting car body 1, with wheels at the bottom of the casting car body 1, a weighing platform 11 on the casting car body 1, a ladle positioning groove 12 for placing a ladle 2 on the weighing platform 11, a temperature detector inside the ladle 2, an upper water inlet 21 at the bottom of the ladle 2, an upper slide plate 22 fixed at the bottom of the upper water inlet 21, a lower slide plate 23 slidably connected to the bottom of the upper slide plate 22, a slide plate mechanism at the bottom of the lower slide plate 23, and the slide plate mechanism is detachably connected to a hydraulic mechanism via a slide plate linkage mechanism 3 passing through the casting car body 1.

[0047] The slide mechanism is connected to the hydraulic mechanism via a slide linkage structure. Driven by the hydraulic mechanism, the slide mechanism opens the inlet passage, enabling automatic steel pouring with high precision. The slide linkage mechanism 3 passes through the steel pouring car body 1 and connects to the hydraulic mechanism, meaning the distance between the hydraulic mechanism and the ladle 2 is relatively large. This isolation by the steel pouring car body 1 ensures automatic control and prevents equipment damage and personnel injury in case of excessively high temperatures or steel leakage during pouring. Furthermore, the slide mechanism is detachably connected to the hydraulic mechanism via the slide linkage mechanism 3. When the ladle needs to be removed, only the slide linkage mechanism 3 needs to be disassembled; the hydraulic mechanism does not need to be disassembled, allowing for convenient and quick ladle removal with simple and safe operation.

[0048] The slide mechanism includes an upper slide plate 22 fixed to the ladle 2, a lower slide plate 23 slidably connected to the bottom of the upper slide plate 22, and a drain outlet 24 connected to the bottom of the lower slide plate 23. Both the upper slide plate 22 and the lower slide plate 23 are provided with drain outlets 25. One end of the lower slide plate 23 is connected to the slide plate linkage mechanism 3. The opening degree of the drain outlet is controlled by controlling the lower slide plate to slide horizontally relative to the upper slide plate and the drain outlet. When the lower slide plate moves to the point where the drain outlet is misaligned with the drain outlet of the upper slide plate, a sealing structure is formed. When the lower slide plate moves to the point where the drain outlet is connected with the drain outlet of the upper slide plate, the upper drain, the drain outlet, and the drain outlet are connected to achieve automatic steel pouring.

[0049] The skateboard linkage mechanism 3 includes a first link 31 and a second link 32. One end of the first link 31 is connected to the lower slide plate 23 of the skateboard mechanism, and the other end of the first link 31 is connected to one end of the second link 32 through a first connector 321. The other end of the second link 32 is connected to the output shaft of the hydraulic mechanism through a second connector 322.

[0050] Both the first connector 321 and the second connector 322 include a connector 33. One end of the connector 33 is provided with a threaded groove 34. The end of the first connecting rod 31 and the end of the output shaft of the hydraulic mechanism are both provided with threaded sections 35. The threaded sections 35 are threadedly connected to the threaded groove 34. The other end of the connector 33 is provided with a U-shaped groove 36 for connecting the second connecting rod 32. The U-shaped groove 36 is provided with symmetrical through-holes 37. The through-holes 37 are provided with pins 38 that pass through the second connecting rod 32.

[0051] One end of the connector 33 is provided with a threaded groove 34, so that the connection end of the first connecting rod 31 and the hydraulic mechanism can be designed as a threaded section 35 that is threadedly connected to the connector 33. The structure is simple and easy to design; moreover, the threaded connection is not prone to wear, the connection is stable, and the installation, replacement and maintenance are convenient.

[0052] The other end of the connector 33 is designed as a U-shaped groove 36, which is connected to the second connecting rod 32 by a pin 38, facilitating the disassembly and replacement of the second connecting rod 32. The pin 38 connection makes the second connecting rod 32 and the connector 33 a movable hinge structure. After the ladle 2 is cast, the pin 38 on the first connector 321 is pulled out, separating the second connecting rod 32 from the first connecting rod 31. The second connecting rod 32 is pulled back to the hydraulic mechanism side by the hydraulic mechanism, which separates the lower slide plate 23 from the hydraulic mechanism. The ladle 2 can be lifted away without disassembling the hydraulic mechanism. The operation is simple, convenient and fast, ensuring the safety of the operators and the high efficiency of the ladle 2 lifting.

[0053] Furthermore, the second link 32 is connected to the first link 31 pin 38 via the first connector 321, and the second link 32 is connected to the hydraulic mechanism pin 38 via the second connector 322. When the second link 32 is disengaged from the first connector 321, the second link 32 can be rotated with the second connector 322 as the rotation origin, thereby facilitating the adjustment of the position of the second link 32. This allows the hydraulic mechanism to be connected and driven with the ladle 2 at different positions, expanding the scope of application.

[0054] The steel casting car body 1 has an installation platform 13 on one side, and the hydraulic mechanism is installed on the installation platform 13. The bottom of the installation platform 13 is provided with several protective layers 14, which can be made of asbestos cloth. The hydraulic mechanism is installed on the steel casting car body 1, and the protective layers 14 are set on the installation platform 13, which effectively avoids equipment safety problems in the event of molten steel splashing or steel leakage accidents.

[0055] The hydraulic mechanism includes a hydraulic cylinder 4, which is connected to a hydraulic station 42 via a hydraulic pipe 41. A hydraulic proportional valve 43 is provided on the hydraulic pipe 41, which controls the hydraulic ratio, thereby controlling the travel distance and travel speed of the hydraulic cylinder 4. The hydraulic station 42 uses water-glycol hydraulic oil, which can be used in high-temperature environments.

[0056] The slide block linkage mechanism 3 is equipped with a vibration monitor 39, which is connected to the control unit and the alarm unit. At the end of the molten steel process, the flowing slag causes vibration in the slide block linkage mechanism 3. The vibration monitor is used to monitor the vibration of the slide block linkage mechanism 3 at the end of the molten steel process. If the vibration value exceeds the set value, it indicates that the molten steel in the ladle is almost gone, and an alarm will be generated.

[0057] The slide block linkage mechanism 3 is equipped with a displacement sensor 391, which is connected to the control unit and the alarm unit. The position of the displacement sensor 391 can accurately determine the position of the slide block linkage mechanism 3 and the opening degree of the outlet 25 in real time, and transmit the information to the control unit. The control unit controls the hydraulic mechanism to achieve automatic control of the casting process.

[0058] The ladle 2 is also equipped with an argon gas inlet pipe 26, and an argon gas inlet pipe 26 is equipped with a solenoid valve 27. The input amount of argon gas is controlled by adjusting the solenoid valve 27.

[0059] The present invention uses solenoid valve 27 and hydraulic proportional valve 43 as control components for transmission and execution to accurately control the temperature of molten steel and the movement range of the sliding plate 23, thereby controlling the opening degree of the outlet 25 and realizing automatic control of the casting process.

[0060] A temperature detector detects the temperature data of molten steel; a weighing platform 11 detects the weight data of molten steel; a vibration monitor 39 detects the vibration data of the sliding plate linkage mechanism 3; and a displacement sensor 391 detects the position data of the sliding plate linkage mechanism 3. The temperature detector, weighing platform 11, vibration monitor 39, hydraulic proportional valve 43, and displacement sensor 391 are all electrically connected to the PLC control unit. The PLC control unit collects the molten steel temperature data, molten steel weight data, vibration data, and position data (i.e., the opening degree information of the ladle 2) of the sliding plate linkage mechanism 3, obtains reasonable execution results, and outputs them. By utilizing the negative feedback closed-loop control principle, the adjustment results are made more accurate.

[0061] The steel temperature control system consists of a temperature detector and an argon solenoid valve 27. The argon flow rate is adjusted by PID control through the position adjustment of the solenoid valve 27. A flow sensor is installed on the argon inlet pipe 26 to detect the actual argon flow rate. The actual argon flow rate value is fed back to the PLC control unit. The PLC control unit uses PID calculation to control the argon actuator valve to adjust the argon quantity according to the set pouring temperature, thereby adjusting the uniformity of the steel temperature.

[0062] The casting control system consists of a weighing platform 11, a vibration monitor 39, a displacement sensor 391, and a hydraulic proportional valve 43. The position of the hydraulic cylinder 4 is controlled by PID control through the position adjustment of the hydraulic proportional valve 43, and feedback is provided through the displacement sensor 391 to adjust the opening size of the ladle nozzle and the casting speed.

Claims

1. An automatic control method for ingot casting of steel, characterized in that: Includes the following steps: S1. Monitor the temperature of molten steel in real time and compare the molten steel temperature with the preset value of the casting temperature; S2. If the molten steel temperature equals the preset casting temperature, the hydraulic mechanism is controlled to open the slide mechanism via the slide linkage mechanism to control the steel pouring speed; if the molten steel temperature is greater than the preset casting temperature, the argon gas flow rate is adjusted to lower the molten steel temperature until it reaches the preset casting temperature; if the molten steel temperature is less than the preset casting temperature, the steel is returned to the furnace. S3. Monitor the weight of molten steel in real time and compare the weight of molten steel with the preset weight value; S4. If the weight of molten steel is less than or equal to the preset weight value, a signal indicating that the casting is about to end is triggered. The hydraulic mechanism and the sliding plate linkage mechanism drive the sliding plate mechanism to reduce the gate opening value. If the weight of molten steel is greater than the preset weight value, the casting operation continues. S5. Based on the signal that the casting is about to end, compare the actual vibration value of the slide linkage mechanism with the preset vibration value. S6. If the actual vibration value is greater than or equal to the preset vibration value, the sprue is closed, the argon gas is shut off, and an alarm is triggered. If the actual vibration value is less than the preset vibration value and the molten steel weight is greater than the preset weight value, the sprue is closed, the argon gas is shut off, and the ladle car proceeds to the next casting process.

2. The automatic control method for ingot casting steel pouring according to claim 1, characterized in that: In step S2, the ladle opening is controlled by the slide mechanism to be 85-95mm in the early stage of steel pouring, 75-85mm in the middle stage of steel pouring, and 40-50mm in the later stage of steel pouring.

3. An automatic control mechanism for die casting of steel, used to implement the control method described in any one of claims 1-2, characterized in that: The steel casting car body (1) is provided with a weighing platform (11) on the steel casting car body (11), a steel ladle (2) is placed on the weighing platform (11), a temperature detector is provided inside the steel ladle (2), a water inlet (21) is provided at the bottom of the steel ladle (2), a sliding plate mechanism is provided at the bottom of the water inlet (21), and the sliding plate mechanism is detachably connected to the hydraulic mechanism via a sliding plate linkage mechanism (3) passing through the steel casting car body (1).

4. The automatic control mechanism for die casting steel pouring according to claim 3, characterized in that: The slide mechanism includes an upper slide (22) fixed to the steel ladle (2), a lower slide (23) slidably connected to the bottom of the upper slide (22), a drain outlet (24) connected to the bottom of the lower slide (23), and a drain outlet (25) provided on both the upper slide (22) and the lower slide (23). One end of the lower slide (23) is connected to the slide linkage mechanism (3).

5. The automatic control mechanism for die casting steel pouring according to claim 3, characterized in that: The skateboard linkage mechanism (3) includes a first link (31) and a second link (32). One end of the first link (31) is connected to the skateboard mechanism, and the other end of the first link (31) is connected to one end of the second link (32) through a first connector (321). The other end of the second link (32) is connected to the output shaft of the hydraulic mechanism through a second connector (322).

6. The automatic control mechanism for die casting steel pouring according to claim 5, characterized in that: The first connector (321) and the second connector (322) both include a connector (33). One end of the connector (33) is provided with a threaded groove (34). The end of the first connecting rod (31) and the end of the output shaft of the hydraulic mechanism are both provided with threaded sections (35). The threaded sections (35) are threadedly connected to the threaded groove (34). The other end of the connector (33) is provided with a U-shaped groove (36) for connecting the second connecting rod (32). The U-shaped groove (36) is provided with symmetrical through holes (37). The through holes (37) are provided with pins (38) that pass through the second connecting rod (32).

7. The automatic control mechanism for die casting steel pouring according to claim 3, characterized in that: The steel casting car body (1) has an installation platform (13) on one side, and the hydraulic mechanism is installed on the installation platform (13). The bottom of the installation platform (13) is provided with several protective layers (14).

8. The automatic control mechanism for die casting steel according to claim 3, characterized in that: The hydraulic mechanism includes a hydraulic cylinder (4), which is connected to a hydraulic station (42) via a hydraulic pipe (41). A hydraulic proportional valve (43) is provided on the hydraulic pipe (41), and water-glycol hydraulic oil is used in the hydraulic station (42).

9. The automatic control mechanism for die casting steel according to claim 3, characterized in that: The sliding plate linkage mechanism (3) is equipped with a vibration monitor (39) and a displacement sensor (391), both of which are connected to the control unit and the alarm unit.

10. The automatic control mechanism for die casting steel according to claim 3, characterized in that: The ladle (2) is also equipped with an argon gas inlet pipe (26), and an argon gas inlet pipe (26) is equipped with a solenoid valve (27).

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