Casting equipment and casting method for improving spheroidization rate of spheroidal graphite cast iron through calipers

Abstract

The invention relates to casting equipment and a casting method for improving the spheroidization rate of spheroidal graphite cast iron through calipers, and belongs to the technical field of spheroidal graphite cast iron. The casting ladle is provided with a feeding port, and the spheroidizing mechanism is detachably installed at the feeding port and located in the casting ladle. The spheroidizing mechanism comprises an adjusting assembly, a casting pipe and a spheroidizing assembly. The casting pipe is arranged at the feeding port, the spheroidizing assembly is installed on the outer side of the casting pipe and rotationally connected with the casting ladle, and a spheroidizing agent is placed in the spheroidizing assembly; the adjusting assembly is used for adjusting the discharging speed of a spheroidizing agent in the spheroidizing assembly, the spheroidizing agent is dispersed in the same mode as the molten iron to make contact with the molten iron and be spheroidized, the situation that the spheroidizing agent which does not participate in spheroidizing is affected in the molten iron adding process is avoided, the releasing speed of the spheroidizing agent can be adjusted according to the flowing speed of the molten iron, and the spheroidizing efficiency is improved. The spheroidizing content and efficiency of the spheroidizing agent can be controlled, it is guaranteed that enough graphite is spheroidized, and the performance of castings is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of ductile iron, and in particular relates to a casting device and a casting method for improving the spheroidization rate of ductile iron with a caliper. Background Art

[0002] The spheroidization rate refers to the percentage of spheroidal graphite in the total graphite, that is, the neutralization index of the spheroidization degree of all graphite in the specified field of view, reflecting the degree to which all graphite in the field of view is close to spheroidal. The spheroidization rate is an important indicator for evaluating the morphology and quality of graphite in ductile iron, and has an important influence on the mechanical properties of ductile iron.

[0003] Ductile iron is a high-strength cast iron material with comprehensive properties close to those of steel. Compared with gray cast iron, ductile iron has higher strength and toughness and can withstand greater pressure and load, which is particularly important in complex force-bearing parts such as brake calipers. Wear resistance: Ductile iron has excellent wear resistance, which enables brake calipers to effectively resist wear during long-term use, thereby extending their service life and maintaining the stability of the braking effect.

[0004] The ductile iron casting process generally includes the following steps: putting the raw materials into a smelting furnace to melt into molten iron, then introducing the molten iron into a ladle and spheroidizing it in the ladle, and finally introducing the spheroidized iron into a mold for casting.

[0005] In order to add spheroidizers during the casting process in the existing ladles to improve the spheroidization effect of the metal, a concave spheroidizer placement groove is usually provided at the bottom of the ladle. However, when magnesium is placed at the bottom of the ladle as a spheroidizer to spheroidize graphite in the molten iron, it is easily affected by the temperature of the molten iron, causing part of the magnesium to be vaporized prematurely due to the influence of the temperature, resulting in insufficient magnesium content participating in the spheroidization reaction, affecting the performance of the final casting. Summary of the invention

[0006] In order to solve the above problems existing in the prior art, the present invention provides a casting device and a casting method for improving the spheroidization rate of ductile iron by a caliper, so as to solve the problem that the existing spheroidizing agent is easily affected by temperature and volatilizes prematurely when in contact with the iron agent, and the spheroidization amount is difficult to control.

[0007] The purpose of the present invention can be achieved through the following technical solutions:

[0008] A casting device for improving the spheroidization rate of ductile iron by using a caliper, comprising a ladle and a spheroidizing mechanism; the ladle is provided with a feed inlet, the spheroidizing mechanism is detachably mounted on the feed inlet, and the spheroidizing mechanism is located inside the ladle;

[0009] The spheroidizing mechanism comprises an adjusting component, a casting pipe and a spheroidizing component; the casting pipe is arranged at the feed port, the spheroidizing component is installed outside the casting pipe, the spheroidizing component is rotatably connected to the ladle, and the spheroidizing agent is placed in the spheroidizing component; the adjusting component is used to adjust the discharge speed of the spheroidizing agent in the spheroidizing component.

[0010] Preferably, the spheroidizing component comprises a hopper bin with a discharge port at the bottom; the hopper bin gradually expands outward from the bottom to the top of the casting pipe.

[0011] Preferably, the discharge port is installed with a valve component, and the valve component includes a plurality of spherical components and a toggle component. The plurality of spherical components are rotatably installed at the discharge port, and any adjacent spherical components are connected by a connecting rod. Any spherical component is provided with a valve port through the main body, and the toggle component passes through the discharge port and is fixedly connected to the spherical component at the end, and the toggle component is used to adjust the direction of the valve port.

[0012] Preferably, the adjustment assembly includes a gear part, an adjustment block and an adjustment plate; the gear part is installed on the ladle, the adjustment plate is connected to the adjustment block, the adjustment plate is slidably installed in the funnel bin, the adjustment block is connected to the gear part, and the gear part is used to adjust the adjustment block and thereby adjust the distance between the adjustment plate and the discharge port.

[0013] Preferably, the gear component includes planetary gears, transmission gears and drive gears, the drive gears are installed on the outside of the ladle, the planetary gears are installed on the inside of the ladle and an external gear portion is provided on the outside, the external gear portion is meshed with the drive gears, the planetary gears are also provided with an internal gear portion, the internal gear portion and the transmission gears are internally meshed, the transmission gear axis is also provided with a rotating shaft, the top of the rotating shaft is rotatably installed on the ladle, the lower part of the rotating shaft is provided with a threaded portion, and the adjustment block is threadedly connected to the threaded portion.

[0014] Preferably, it also includes a thermal insulation component, which is located between the casting pipe and the funnel bin.

[0015] Preferably, the ladle is provided with a gate, and the spheroidizing assembly is located between the gate and the feed port.

[0016] Preferably, gantry hangers are provided on both sides of the outer wall of the ladle, and the gantry hangers are rotatably mounted on the ladle.

[0017] Preferably, a casting method for improving the spheroidization rate of ductile iron of a caliper comprises:

[0018] Step 1, melting: prepare the raw materials required for melting and put them into the melting furnace for heating and melting;

[0019] Step 2: Spheroidizing treatment: placing the spheroidizing agent in the spheroidizing assembly and pouring the smelted molten iron into the ladle;

[0020] Step three, casting, prepare a suitable casting mold and apply a demoulding machine, introduce the spheroidized molten iron into the mold; after the casting solidifies, take out the casting and clean it.

[0021] The beneficial effects of the present invention are:

[0022] The spheroidizer is dispersed in the same way as the molten iron to achieve contact and spheroidization with the molten iron, avoiding the influence on the spheroidizer that does not participate in the spheroidization during the increase of the molten iron, and the release rate of the spheroidizer can be adjusted according to the flow rate of the molten iron. When the flow rate of the body fluid increases, the output rate of the spheroidizer can be adjusted by adjusting the components, so that the spheroidizer can fully contact with the molten iron, thereby improving the spheroidization efficiency of the spheroidizer; the content and efficiency of the spheroidization of the spheroidizer can be controlled to ensure that enough graphite is spheroidized, thereby improving the performance of the casting. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0024] Figure 1 A schematic diagram of a half-section structure of a casting device provided in one embodiment of the present invention;

[0025] Figure 2 for Figure 1 The enlarged structural diagram at A in the middle;

[0026] Figure 3 A schematic diagram of the structure of a casting device provided in one embodiment of the present invention;

[0027] Figure 4 A schematic diagram of a top view of a casting device provided in one embodiment of the present invention;

[0028] Figure 5 A schematic diagram of a valve component installation structure provided in one embodiment of the present invention;

[0029] Legend: 1. Ladle; 11. Feed port; 2. Adjustment assembly; 21. Gear part; 211. Planetary gear; 212. Transmission gear; 213. Drive gear; 22. Rotating shaft; 221. Threaded part; 23. Adjustment block; 24. Adjustment plate; 3. Casting tube; 4. Spheroidizing assembly; 41. Funnel bin; 42. Discharge port; 5. Valve part; 51. Spherical part; 52. Valve port; 53. Connecting rod; 6. Insulation part; 7. Gantry hanger; 8. Gate. DETAILED DESCRIPTION

[0030] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0031] like Figure 1-Figure 5 As shown, a casting device for improving the spheroidization rate of ductile iron by a caliper comprises a ladle 1 and a spheroidizing mechanism; the ladle 1 is provided with a feed inlet 11, the spheroidizing mechanism is detachably mounted on the feed inlet 11, and the spheroidizing mechanism is located in the ladle 1;

[0032] The existing spheroidizer is placed at the bottom of the ladle 1. Since the spheroidizer usually uses magnesium with a boiling point lower than that of the molten iron, it promotes the spheroidization of graphite. In this way, the spheroidizer placed at the bottom of the ladle 1 will cause the spheroidizer located at the top to contact with the body liquid for spheroidization treatment as time goes by when the liquid is continuously added from the top of the ladle 1, while the spheroidizer at the bottom is affected by the temperature of the molten iron that is continuously accumulated at the bottom. It will be affected by the temperature of the molten iron before it contacts the molten iron and liquefy in advance. This will cause the spheroidizer content involved in the spheroidization treatment to decrease in a certain amount of molten iron, thereby reducing the spheroidization efficiency of graphite and affecting the properties of the casting. The content of the spheroidizer directly affects the spheroidization rate of graphite. An appropriate amount of spheroidizer can fully spheroidize the graphite to form evenly distributed spheroidal graphite, thereby improving the strength and toughness of the cast iron. If the content of the spheroidizer is insufficient, the graphite may not be fully spheroidized.

[0033] Therefore, the spheroidizing mechanism includes an adjusting component 2, a casting pipe 3 and a spheroidizing component 4; the casting pipe 3 is arranged at the feed port 11, the spheroidizing component 4 is installed on the outside of the casting pipe 3, the spheroidizing component 4 is rotatably connected with the ladle 1, and the spheroidizing agent is placed in the spheroidizing component 4; the adjusting component 2 is used to adjust the discharge speed of the spheroidizing agent in the spheroidizing component 4; the spheroidizing agent is placed on the top of the ladle 1, and the molten iron is added into the ladle 1 from the casting pipe 3. When the molten iron flows through the casting pipe 3, the adjusting component 2 adjusts the spheroidizing component 4 to release the spheroidizing agent from the spheroidizing component 4. When the spheroidizing agent is released from the spheroidizing component 4, it will be mixed with the flowing molten iron. The spheroidizing agent is in contact with the molten iron during its flow, and the spheroidizing agent is dispersed in the same way as the molten iron to achieve contact and spheroidization with the molten iron, thereby avoiding affecting the spheroidizing agent that does not participate in spheroidization during the increase of the molten iron. The release rate of the spheroidizing agent can be adjusted according to the flow rate of the molten iron. When the flow rate of the molten iron increases, the output rate of the spheroidizing agent can be adjusted by adjusting the components, so that the spheroidizing agent can fully contact with the molten iron, thereby improving the spheroidization efficiency of the spheroidizing agent. The content and efficiency of the spheroidizing agent can be controlled to ensure that enough graphite is spheroidized, thereby improving the performance of the casting.

[0034] In one embodiment, the spheroidizing component 4 includes a hopper bin 41 with a discharge port 42 at the bottom; the hopper bin 41 gradually expands outward from the bottom to the top of the casting tube 3; by tilting the hopper bin 41, the spheroidizing agent can be transported to the flowing molten iron at a certain angle when flowing out of the hopper bin 41, so that the spheroidizing agent is fully in contact with the molten iron; the design of the bottom discharge port 42 allows the spheroidizing agent to flow out smoothly at a preset speed and effectively mix with the molten iron. By adjusting the size of the discharge port 42 or coordinating the control of the adjustment component 2, the discharge speed of the spheroidizing agent can be accurately controlled to ensure the stability and controllability of the spheroidizing process.

[0035] In one embodiment, the discharge port 42 is equipped with a valve member 5, which includes a plurality of spherical members 51 and a toggle member. The plurality of spherical members 51 are rotatably installed in the discharge port 42, and any adjacent spherical members 51 are connected by a connecting rod 53. Any spherical member 51 is provided with a valve port 52 through the body, and the toggle member is fixedly connected to the spherical member 51 at the end through the discharge port 42, and the toggle member is used to adjust the direction of the valve port 52; the plurality of spherical members 51 are rotatably installed in the discharge port 42, and each spherical member 51 is provided with a valve port 52 through the body. These spherical members 51 are connected to each other through the connecting rod 53 to form a rotatable integral structure. The design of the spherical member 51 enables the valve port 52 to maintain adaptability to the flow direction of the liquid metal during rotation, ensuring that the spheroidizing agent can be released evenly and smoothly, and the toggle member is fixedly connected to the spherical member 51 at the end through the discharge port 42, serving as an external operating rod. By rotating the toggle member, the entire spherical member 51 combination can be driven to rotate, thereby adjusting the direction and opening degree of the valve port 52; traditional valves can often only achieve a fully open or fully closed state, and cannot accurately control the flow of the medium. The valve member 5 in this embodiment can achieve precise control of the discharge speed of the spheroidizing agent by rotating the spherical member 51 and adjusting the direction of the valve port 52 to meet the needs of different casting processes. During the casting process, the spheroidizing agent needs to be stored in the funnel bin 41 before spheroidization, and when the spheroidizing agent needs to be output, the funnel bin 41 needs to be opened, and the funnel bin 41 in this embodiment is set at the top of the ladle 1. Therefore, the valve member 5 can automatically adjust the direction of the valve port 52 through the flexible rotation of the spherical member 51 to ensure that the spheroidizing agent is always mixed with the liquid metal; by accurately adjusting the discharge speed and flow direction of the spheroidizing agent, it can be ensured that the spheroidizing agent is fully mixed with the liquid metal, improve the spheroidization quality, and reduce defects and unqualified products in the casting;

[0036] During the casting process, when the liquid metal flows into the ladle 1, the operator rotates the toggle according to the process requirements. The rotation of the toggle drives the spherical member 51 to rotate as a whole, thereby changing the direction and opening degree of the valve port 52. When the valve port 52 is facing the liquid metal flow direction, the spheroidizing agent flows out smoothly through the valve port 52 and mixes with the liquid metal; when the discharge speed needs to be adjusted, it can be achieved by fine-tuning the angle of the toggle. By continuously adjusting the direction and opening degree of the valve port 52, the discharge speed and flow direction of the spheroidizing agent can be accurately controlled.

[0037] In one embodiment, the adjustment component 2 includes a gear 21, an adjustment block 23 and an adjustment plate 24; the gear 21 is installed on the ladle 1, the adjustment plate 24 is connected to the adjustment block 23, the adjustment plate 24 is slidably installed on the funnel bin 41, the adjustment block 23 is connected to the gear 21, and the gear 21 is used to adjust the adjustment block 23 and then adjust the distance between the adjustment plate 24 and the discharge port 42; in the casting process, the precise control of the discharge speed of the spheroidizing agent is one of the key factors to improve the quality of the casting. The traditional adjustment method often relies on the experience and manual adjustment of the operator, and it is difficult to achieve precise and stable control. Therefore, it is particularly important to design a mechanism that can automatically and accurately adjust the discharge speed of the spheroidizing agent; the adjustment component 2 in this embodiment realizes the precise adjustment of the discharge speed of the spheroidizing agent through the combination of the gear 21, the adjustment block 23 and the adjustment plate 24; when the discharge speed of the spheroidizing agent needs to be adjusted, the operator drives the gear 21 to rotate through an external control device (such as a motor, a hand wheel, etc.). The gear member 21 is connected to the adjustment block 23, so the rotation of the gear member 21 will drive the adjustment block 23 to move along a certain track. As the adjustment block 23 moves, the adjustment plate 24 connected thereto will also slide in the hopper bin 41 accordingly. This sliding process changes the distance between the adjustment plate 24 and the discharge port 42. When the adjustment plate 24 approaches the discharge port 42, the space for the spheroidizing agent to fall is reduced, the falling speed is accelerated, and the discharge speed is increased; conversely, when the adjustment plate 24 is away from the discharge port 42, the space for the spheroidizing agent to fall is increased, the falling speed is slowed down, and the discharge speed is reduced. By accurately controlling the rotation angle and speed of the gear member 21, the distance between the adjustment plate 24 and the discharge port 42 can be accurately adjusted, thereby realizing accurate control of the discharge speed of the spheroidizing agent.

[0038] In one embodiment, the gear member 21 includes a planetary gear 211, a transmission gear 212 and a driving gear 213. The driving gear 213 is installed on the outer side of the ladle 1. The planetary gear 211 is installed on the inner side of the ladle 1 and is provided with an external gear portion on the outer side, which meshes with the driving gear 213. An internal gear portion is also provided inside the planetary gear 211, and the internal gear portion and the transmission gear 212 mesh internally. A rotating shaft 22 is also provided on the axis of the transmission gear 212. The top of the rotating shaft 22 is rotatably installed on the ladle 1. A threaded portion 221 is provided on the lower part of the rotating shaft 22, and the adjusting block 23 is threadedly connected with the threaded portion 221. The planetary gear 211 is installed on the inner side of the ladle 1, and an external gear portion is provided on the outer side thereof, which meshes with the driving gear 213. As the driving gear 213 rotates, the planetary gear 211 starts to rotate around its own axis and also revolves around the axis of the driving gear 213. An internal gear portion is also provided inside the planetary gear 211, which meshes with the transmission gear 212 internally. As the planetary gear 21 1 rotates, the transmission tooth 212 interacts with the inner tooth portion of the planetary gear 211 through its inner tooth portion to achieve power transmission, and this internal meshing mode further improves the accuracy and stability of the transmission; the axis of the transmission tooth 212 is provided with a rotating shaft 22, and the top of the rotating shaft 22 is rotatably installed on the ladle 1 to ensure that the transmission tooth 212 can rotate stably, and the lower part of the rotating shaft 22 is provided with a threaded portion 221, which is threadedly connected with the adjustment block 23. When the transmission tooth 212 rotates, the adjustment block 23 moves up and down along the thread direction through the action of the threaded portion 221; the adjustment block 23 is connected to the adjustment plate 24. As the adjustment block 23 moves up and down, the adjustment plate 24 slides in the funnel bin 41, thereby changing the distance between it and the discharge port 42. The change in this distance directly affects the falling speed and discharge speed of the spheroidizing agent; by accurately controlling the rotation speed and direction of the external power source, the precise control of the rotation speed and direction of the driving tooth 213 can be achieved. Furthermore, through the transmission effect of the planetary gear 211 wheel mechanism and the threaded adjustment mechanism, the distance between the adjustment plate 24 and the discharge port 42 is accurately adjusted, thereby achieving accurate control of the discharge speed of the spheroidizing agent.

[0039] In one embodiment, a thermal insulation member 6 is further included, and the thermal insulation member 6 is located between the casting tube 3 and the funnel bin 41; the working principle of the thermal insulation member 6 is mainly based on the blocking of heat conduction and the characteristics of the thermal insulation material. The thermal insulation material usually has a low thermal conductivity and a high thermal resistance, which can effectively block or slow down the transfer of heat. In this embodiment, the thermal insulation member 6 is designed and installed between the casting tube 3 and the funnel bin 41 to form a thermal barrier. When the high-temperature liquid metal flows into the ladle 1 through the casting tube 3, a large amount of heat energy carried by it attempts to be transferred to the funnel bin 41 and the spheroidizing agent inside through the wall of the casting tube 3. However, due to the presence of the thermal insulation member 6, this heat energy is effectively isolated inside the casting tube 3 and cannot be directly transferred to the funnel bin 41. Therefore, the spheroidizing agent in the funnel bin 41 can be maintained in a relatively stable temperature environment, avoiding the vaporization phenomenon caused by premature heating. The thermal insulation member 6 is located between the casting tube 3 and the funnel bin 41, effectively isolating the direct heat conduction of the high-temperature liquid metal to the spheroidizing component 4. This avoids the spheroidizing agent (such as magnesium) from being vaporized due to premature exposure to a high temperature environment, thereby ensuring that the spheroidizing agent maintains sufficient content and activity when it is added to the liquid metal, thereby improving the effect of the spheroidizing treatment.

[0040] In one embodiment, the ladle 1 is provided with a pouring gate 8, and the spheroidizing assembly 4 is located between the pouring gate 8 and the feed port 11. When pouring the liquid, the pouring angle of the ladle 1 is controlled so that the high-temperature molten iron only flows out from the pouring gate 8. In this way, when the molten iron after the spheroidizing treatment is poured into the mold, the molten iron can be prevented from flowing out from the feed port 11 and the pouring gate 8, thereby avoiding safety accidents and improving safety.

[0041] In one embodiment, gantry hangers 7 are provided on both sides of the outer wall of the ladle 1, and the gantry hangers 7 are rotatably mounted on the ladle 1; the gantry hangers 7 are generally designed as a frame structure, which has sufficient strength and rigidity to support the weight of the ladle 1 and the material contained therein. Lifting ears or hooks are provided at both ends or specific positions of the frame for connecting with the slings or chains of the lifting equipment (such as cranes, cranes, etc.). In addition, the gantry hanger 7 also includes a rotating mechanism, such as a bearing, a rotating shaft 22 or a hinge, etc., to achieve flexible connection and rotation with the ladle 1.

[0042] In one embodiment, a casting method for improving the spheroidization rate of ductile iron of a caliper includes:

[0043] Step 1, melting: prepare the raw materials needed for melting and place them in a melting furnace for heating and melting. In this stage, the selected raw materials (such as scrap steel, pig iron, recycled materials, etc.) are placed in a melting furnace and heated to a high temperature to completely melt and mix them evenly to form molten iron. This process ensures that impurities in the raw materials are effectively removed, while ensuring the purity and temperature of the molten iron, providing a basis for subsequent processing;

[0044] Step 2, spheroidization treatment, placing the spheroidizing agent in the spheroidizing assembly 4, and putting the smelted molten iron into the ladle 1, which is a key step to improve the performance of cast iron. The spheroidizing agent (mainly composed of magnesium, rare earth and other elements) is placed in the spheroidizing assembly 4. When the high-temperature molten iron flows into the treatment area through the ladle 1, the spheroidizing agent reacts with harmful elements such as sulfur and oxygen in the molten iron to form a large number of spheroidal graphite cores. These cores guide the graphite to precipitate in a spherical shape during the subsequent solidification process, thereby significantly improving the strength, toughness and wear resistance of the cast iron.

[0045] Step 3: Casting. Prepare a suitable casting mold and apply a demoulding agent to introduce the spheroidized molten iron into the mold. After the casting solidifies, remove the casting and clean it. The spheroidized molten iron is quickly introduced into the pre-prepared casting mold. The design of the mold must accurately match the shape of the casting, and a release agent must be applied to the inner wall to prevent the casting from sticking to the mold. As the molten iron cools and solidifies, graphite is evenly distributed in the matrix in a spherical form to form ductile iron. After the casting solidifies, remove it from the mold and perform necessary cleaning to remove surface burrs and residues.

[0046] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A casting device for improving the spheroidization rate of ductile iron by using a caliper, characterized in that: It comprises a casting ladle and a spheroidizing mechanism; the casting ladle is provided with a feed inlet, the spheroidizing mechanism is detachably mounted on the feed inlet, and the spheroidizing mechanism is located inside the casting ladle; The spheroidizing mechanism comprises an adjusting component, a casting pipe and a spheroidizing component; the casting pipe is arranged at the feed port, the spheroidizing component is installed outside the casting pipe, the spheroidizing component is rotatably connected to the ladle, and the spheroidizing agent is placed in the spheroidizing component; the adjusting component is used to adjust the discharge speed of the spheroidizing agent in the spheroidizing component.

2. The casting equipment for improving the spheroidization rate of ductile iron by a caliper according to claim 1 is characterized in that: The spheroidizing component comprises a hopper bin with a discharge port at the bottom; the hopper bin gradually expands outward from the bottom to the top of the casting pipe.

3. The casting equipment for improving the spheroidization rate of ductile iron by a caliper according to claim 2 is characterized in that: The discharge port is equipped with a valve component, which includes a plurality of spherical components and a toggle component. The plurality of spherical components are rotatably installed at the discharge port, and any adjacent spherical components are connected by a connecting rod. Any spherical component passes through the main body and is provided with a valve port. The toggle component passes through the discharge port and is fixedly connected to the spherical component at the end, and the toggle component is used to adjust the direction of the valve port.

4. The casting equipment for improving the spheroidization rate of ductile iron by a caliper according to claim 2 is characterized in that: The adjustment assembly includes a gear part, an adjustment block and an adjustment plate; the gear part is installed on the ladle, the adjustment plate is connected to the adjustment block, the adjustment plate is slidably installed on the funnel bin, the adjustment block is connected to the gear part, and the gear part is used to adjust the adjustment block and then adjust the distance between the adjustment plate and the discharge port.

5. The casting equipment for improving the spheroidization rate of ductile iron by using a caliper according to claim 4 is characterized in that: The gear member includes planetary gears, transmission gears and drive gears. The drive gears are installed on the outside of the ladle. The planetary gears are installed on the inside of the ladle and are provided with an external gear portion on the outside. The external gear portion is meshed with the drive gears. An internal gear portion is also provided inside the planetary gears. The internal gear portion and the transmission gears are meshed internally. A rotating shaft is also provided at the axis of the transmission gears. The top of the rotating shaft is rotatably installed on the ladle. A threaded portion is provided at the bottom of the rotating shaft. The adjustment block is threadedly connected to the threaded portion.

6. The casting equipment for improving the spheroidization rate of ductile iron by calipers according to claim 2 is characterized in that: It also includes a thermal insulation component, which is located between the casting pipe and the funnel bin.

7. The casting equipment for improving the spheroidization rate of ductile iron by calipers according to claim 1 is characterized in that: The ladle is provided with a gate, and the spheroidizing component is located between the gate and the feed port.

8. The casting equipment for improving the spheroidization rate of ductile iron by calipers according to claim 1 is characterized in that: Gantry hangers are arranged on both sides of the outer wall of the ladle, and the gantry hangers are rotatably installed on the ladle.

9. A casting method for improving the spheroidization rate of ductile iron for a caliper applicable to any one of claims 1 to 8, characterized in that: include: Step 1, melting: prepare the raw materials required for melting and put them into the melting furnace for heating and melting; Step 2: Spheroidizing treatment: placing the spheroidizing agent in the spheroidizing assembly and pouring the smelted molten iron into the ladle; Step three, casting, prepare a suitable casting mold and apply a demoulding machine, introduce the spheroidized molten iron into the mold; after the casting solidifies, take out the casting and clean it.

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