CN118002767B - Device and process method for vibration chilling nucleation - Google Patents

Abstract

The present invention provides a vibration chilling nucleation device and a process method, belonging to the technical field of mold casting. The vibration chilling nucleation device comprises a casting pool, a cooling system, a vibration device and a temperature measuring probe. A homogeneous chilling nucleation rod is inserted into the feeding end of the casting pool. The homogeneous chilling nucleation rod is used to cool the casting pool, and the homogeneous chilling nucleation rod reciprocates along a first direction relative to the casting pool to change the distance extended into the casting pool. The cooling system is located at one end of the homogeneous chilling nucleation rod away from the casting pool to cool the homogeneous chilling nucleation rod. The vibration device is located outside the casting pool and connected to the homogeneous chilling nucleation rod. The metal inside the casting pool can be cooled from the center by the homogeneous chilling nucleation rod, and the vibration device can cause the dendrites attached to the surface of the rod to melt, form new equiaxed crystal nuclei and throw them away, which greatly increases the number of equiaxed crystals and is conducive to high-quality production.

Description

A vibration quenching nucleation device and process method

Technical Field

The present disclosure relates to the technical field of mold casting, and in particular to a vibration chilling nucleation device and a process method.

Background Art

The die casting method is a process method that uses gravity to pour molten metal into a mold and cool it to obtain a casting. The die casting method has excellent production effects when producing heat-sensitive steels such as high-speed steel and high-carbon chromium bearing steel. In addition, for small-batch trial production and production, the cost of die casting production is lower and the surface roughness is better. Therefore, this technology has advantages that cannot be ignored in specific fields.

Most of the existing die casting methods cool the mold by introducing cooling water through a preset cooling water channel. However, when the size of the die-cast billet increases, the solidification in the center of the billet becomes slower and slower, resulting in serious solute redistribution, solidification shrinkage, and well-developed columnar crystals and low equiaxed crystal rate in the core of the billet, which in turn leads to quality problems such as segregation, looseness, shrinkage holes and cracks in the center of the billet. In severe cases, the billet may be scrapped, resulting in a large waste of manpower and material resources.

Summary of the invention

A technical problem to be solved by the present disclosure is that, in the existing die casting method, when the size of the die casting billet increases, the solidification of the center of the billet becomes slower and slower, resulting in serious quality problems in the core of the billet, and in severe cases, the billet may be scrapped.

In order to solve the above technical problems, the present disclosure provides a vibration quenching nucleation device, which includes:

A casting pool, wherein a homogeneous chilling nucleation rod is inserted at a feed end of the casting pool, the homogeneous chilling nucleation rod is used to cool the molten metal in the casting pool, and the homogeneous chilling nucleation rod reciprocates along a first direction relative to the casting pool to change the distance of the homogeneous chilling nucleation rod extending into the casting pool;

A cooling system, the cooling system is located at one end of the homogeneous quenching nucleation rod away from the casting pool, so as to cool the homogeneous quenching nucleation rod;

A vibration device, the vibration device is located outside the casting pool and connected to the homogeneous quenching nucleation rod;

A temperature measuring probe is located outside the casting pool to detect the real-time temperature of the casting pool;

The first direction is the direction of gravity.

In some embodiments, the aforementioned vibration quenching nucleation device, wherein the homogeneous quenching nucleation rod is a hollow structure and is provided with a flow guide tube inside, the discharge end of the cooling system is connected to the flow guide tube, and the feed end of the cooling system is connected to the interior of the homogeneous quenching nucleation rod to form a circulation channel to achieve cooling of the homogeneous quenching nucleation rod.

In some embodiments, a vibration quenching nucleation device as described above, wherein the cooling system includes a valve, a cooling pool, a circulating pump and a cooling fan; the valve is located at the discharge end of the cooling pool to control the delivery of the cooling metal liquid, the cooling fan is located on the cooling pool and on the side away from the discharge end to cool the cooling metal liquid in the cooling pool, and the circulating pump is located between the valve and the cooling pool to drive the circulation of the cooling metal liquid.

In some embodiments, the aforementioned vibration quenching nucleation device further includes a lifting device, and the homogeneous quenching nucleation rod is flexibly connected to the lifting device.

In some embodiments, in the aforementioned vibration quenching nucleation device, a limit slider is provided at the feed end of the casting pool, and the limit slider is connected to the homogeneous quenching nucleation rod to limit the moving direction of the homogeneous quenching nucleation rod and to define the insertion position of the homogeneous quenching nucleation rod.

In some embodiments, in the aforementioned vibration quenching nucleation device, a heat-insulating sealing cap is provided at the feed end of the casting pool to prevent oxygen from entering the interior of the casting pool and causing oxidation of the mold.

In some embodiments, in the aforementioned vibration quenching nucleation device, the temperature measuring probes are distributed outside the casting pool at intervals along the first direction to detect the temperature of various positions of the casting pool.

In some embodiments, the aforementioned vibration quenching nucleation device also includes a gas supply device; the gas supply device includes an argon gas bottle, a flow control valve and a connecting pipe; the connecting pipe connects the argon gas bottle and the casting pool; to balance the change of air pressure in the casting pool when the homogeneous quenching nucleation rod moves or the molten metal in the casting pool solidifies and shrinks, the flow control valve is connected to the discharge end of the argon gas bottle to adjust the amount of argon gas discharge according to an external control signal.

In some embodiments, in the aforementioned vibration quenching nucleation device, the material of the homogeneous quenching nucleation rod is the same as the material of the molten metal in the casting pool.

A second aspect of the present application provides a vibration quenching nucleation process, which comprises the following steps:

S1, connecting the homogeneous chilled nucleation rod to a cooling system, and inputting cooling molten metal into the homogeneous chilled nucleation rod until the air inside the homogeneous chilled nucleation rod is discharged;

S2, placing the homogeneous chilled nucleation rod into the casting pool, and starting the vibration device to vibrate the homogeneous chilled nucleation rod, while circulating the cooling metal liquid in the homogeneous chilled nucleation rod through the cooling system;

S3, detecting the temperature of the casting pool by a temperature measuring probe, and controlling the vibration effect of the vibration device on the homogeneous quenching nucleation rod, and at the same time slowly withdrawing the homogeneous quenching nucleation rod from the inside of the casting pool to control the nucleation rate and nucleation position of the equiaxed crystal;

S4, heating the extracted homogeneous quenching nucleation rod, and introducing an inert gas into the homogeneous quenching nucleation rod to discharge the residual liquid metal.

Through the above technical scheme, the present invention provides a vibration quenching nucleation device, which can cool the metal inside the casting pool from the center through a homogeneous quenching nucleation rod containing cooling metal liquid, thereby improving the uniformity of the temperature field and the solidification structure, thereby increasing the generation rate of equiaxed crystals and reducing the internal stress of the ingot; at the same time, the vibration effect of the vibration device on the homogeneous quenching nucleation rod can cause the dendrites attached to its surface to melt and form new equiaxed crystal nuclei, which greatly increases the number of equiaxed crystals, thereby making the overall interior of the finished product full and free of shrinkage cracks, which is conducive to high-quality production.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

FIG. 1 is a schematic structural diagram of a vibration quenching nucleation device connection disclosed in an embodiment of the present disclosure.

Description of reference numerals:

1. Casting pool; 2. Homogeneous quenching nucleation rod; 3. Cooling system; 301. Valve; 302. Cooling pool; 303. Circulation pump; 304. Cooling fan; 4. Vibration device; 5. Temperature probe; 6. Flow guide tube; 7. Limit slider; 8. Insulation sealing cap; 9. Lifting device; 10. Air supply device; 1001. Argon bottle; 1002. Flow control valve; 1003. Connecting pipe; a. First direction.

DETAILED DESCRIPTION

The following is a further detailed description of the embodiments of the present disclosure in conjunction with the accompanying drawings and examples. The detailed description of the following embodiments and the accompanying drawings are used to exemplarily illustrate the principles of the present disclosure, but cannot be used to limit the scope of the present disclosure. The present disclosure can be implemented in many different forms, not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

The present disclosure provides these embodiments to make the present disclosure thorough and complete, and to fully express the scope of the present disclosure to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of the parts and steps, the composition of the materials, the numerical expressions and the numerical values set forth in these embodiments should be interpreted as being merely exemplary, and not as limiting.

It should be noted that, in the description of the present disclosure, unless otherwise specified, the meaning of "multiple" is greater than or equal to two; the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicating the orientation or positional relationship, are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present disclosure. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

In addition, the words "first", "second" and similar words used in the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different parts. "Vertical" does not mean vertical in the strict sense, but is within the tolerance range. "Parallel" does not mean parallel in the strict sense, but is within the tolerance range. "Include" or "comprising" and similar words mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of also including other elements.

It should also be noted that in the description of the present disclosure, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to the specific circumstances. When a specific device is described as being located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device.

All terms used in the present disclosure have the same meanings as those understood by those of ordinary skill in the art to which the present disclosure belongs, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries, for example, should be interpreted as having meanings consistent with their meanings in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless explicitly defined as such herein.

Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

Embodiment 1

Referring to FIG. 1 , this embodiment discloses a vibration quenching nucleation device, which includes:

A casting pool 1, a cooling system 3, a vibration device 4 and a temperature probe 5. A homogeneous quenching nucleation rod 2 is inserted at the feeding end of the casting pool 1. The homogeneous quenching nucleation rod 2 is used to cool the casting pool 1, and the homogeneous quenching nucleation rod 2 reciprocates relative to the casting pool 1 along a first direction a to change the distance extended into the casting pool 1; the cooling system 3 is located at the end of the homogeneous quenching nucleation rod 2 away from the casting pool 1 to cool the homogeneous quenching nucleation rod 2; the vibration device 4 is located outside the casting pool 1 and connected to the homogeneous quenching nucleation rod 2; the temperature probe 5 is located outside the casting pool 1 to detect the real-time temperature of the casting pool 1; wherein the first direction a is the direction of gravity.

Specifically, in order to solve the problem that when the size of the mold casting billet increases, the solidification in the center of the billet becomes slower and slower, resulting in serious quality problems in the core of the billet, the vibration quenching nucleation device provided in this embodiment can cool the molten metal inside the casting pool 1 from the center through the homogeneous quenching nucleation rod 2 located in the center of the casting pool 1. At the same time, the cooling effect of the cooling system 3 and the vibration effect of the vibration device 4 can ensure the cooling effect of the homogeneous quenching nucleation rod 2 and promote the melting of the attached dendrites, which is beneficial to the formation of equiaxed nuclei and ensures the quality of the billet. At the same time, the vibrating nucleation rod can eject the formed grains laterally, so that the grains are dispersed in the casting pool.

Among them, the vibration quenching nucleation device provided in this embodiment is mainly used in mold casting processing. The casting pool 1 is a general term for mold casting equipment, which is used to store the molten metal to be cast. A homogeneous quenching nucleation rod 2 is provided inside the casting pool 1. The homogeneous quenching nucleation rod 2 is used to cool the molten metal in the casting pool 1, and the homogeneous quenching nucleation rod 2 moves back and forth along the first direction a relative to the casting pool 1 to change the distance extended into the casting pool 1, wherein the homogeneous quenching nucleation rod 2 is a hard rod body whose overall temperature is lower than that of the molten metal, thereby allowing the molten metal to form equiaxed nuclei. It can be understood that as the homogeneous quenching nucleation rod 2 cools the molten metal, a large number of equiaxed nuclei are formed inside the casting pool 1 and precipitate to the bottom of the casting pool 1. As the reaction proceeds, the homogeneous quenching nucleation rod 2 moves away from the first direction a and slowly withdraws from the casting pool 1 for next use, and finally the molten metal in the casting pool 1 is cast.

The cooling system 3 is a general term for devices used to cool the homogeneous quenching nucleation rod 2. The cooling system 3 is used to cool the homogeneous quenching nucleation rod 2. When the cooling system 3 is connected to the homogeneous quenching nucleation rod 2, when the homogeneous quenching nucleation rod 2 reciprocates along the first direction a, the cooling system 3 is softly connected to the homogeneous quenching nucleation rod 2 or moves with the homogeneous quenching nucleation rod 2 to ensure a continuous cooling effect on the homogeneous quenching nucleation rod 2.

The vibration device 4 is a general term for the vibration device 4 used to drive the homogeneous quenching nucleation rod 2, wherein the vibration device 4 includes a vibration generating device and a vibration regulator. The vibration generating device can apply vibration to the homogeneous quenching nucleation rod 2 without affecting the movement of the nucleation rod, so that the relative position of the homogeneous quenching nucleation rod 2 fixed inside the casting pool 1 is conducive to the stable output of equiaxed crystal nuclei; the vibration regulator is connected to the external control system, and can adjust the amplitude and frequency generated by the vibration generating device to achieve the control of the output speed of the equiaxed crystal nuclei. At the same time, the vibration effect can increase the diffusion movement of equiaxed crystals inside the casting pool 1, improve the probability of capturing columnar crystals of the crystal nucleus, and promote the melting of dendrites attached to the homogeneous quenching nucleation rod 2 to form new equiaxed crystal nuclei, thereby increasing the number of equiaxed crystals and improving the overall stability and uniformity of the metal.

The temperature probe 5 is a general term for a temperature detection device, which can be but is not limited to a temperature sensor. The temperature probe 5 is located outside the casting pool 1. At the same time, the temperature probe 5 is distributed outside the casting pool 1 at intervals along the first direction a to detect the temperature of each position of the casting pool 1. It can be understood that the temperature of different positions in the casting pool 1 can be detected by each temperature probe 5. When the temperature of the detection area is cooled to a specified value, the homogeneous quenched nucleation rod 2 can be controlled to move away from the first direction a and move to a higher temperature area for cooling, so as to achieve cooling of this area.

According to the above, the vibration quenching nucleation device provided by the present invention can cool the molten metal at different positions in the center of the casting pool 1 through the reciprocating homogeneous quenching nucleation rod 2, thereby improving the overall cooling effect of the molten metal. At the same time, the vibration of the vibration device 4 can control the generation speed of equiaxed crystal nuclei and ensure the product quality of the final casting mold, without the occurrence of shrinkage cracks, and reducing the generation of columnar crystals.

The term "and/or" in this article is only a description of the association relationship of associated objects, identifying three possible relationships. For example, A and/or B is specifically understood as: A and B can be included at the same time, A can exist alone, or B can exist alone, and any of the above three situations can be met.

In some embodiments, referring to FIG1 , the vibration quenching nucleation device provided in this embodiment, in a specific implementation, the homogeneous quenching nucleation rod 2 is a hollow structure and is provided with a guide tube 6 inside, the discharge end of the cooling system 3 is connected with the guide tube 6, and the feed end of the cooling system 3 is connected with the inside of the homogeneous quenching nucleation rod 2 to form a circulation channel to realize the cooling of the homogeneous quenching nucleation rod 2.

Specifically, in order to ensure the cooling effect on the homogeneous chilled nucleation rod 2, the homogeneous chilled nucleation rod 2 in this embodiment is a hollow structure and is provided with a guide tube 6 inside. The guide tube 6 is a metal hard tube body, and the guide tube 6 is connected to the inside of the homogeneous chilled nucleation rod 2, wherein the discharge end of the cooling system 3 is connected to the guide tube 6, and the feed end of the cooling system 3 is connected to the inside of the homogeneous chilled nucleation rod 2. It can be understood that the cooling molten metal forms a circulation loop of the cooling system 3-guide tube 6-homogeneous chilled nucleation rod 2-cooling system 3, thereby realizing the circulation of the cooling molten metal, which can protect the homogeneous chilled nucleation rod 2 and avoid damage to the homogeneous chilled nucleation rod 2 when it is cooled in the casting pool 1, thereby affecting the processing.

In some embodiments, referring to FIG1 , the vibration quenching nucleation device provided in this embodiment, in a specific implementation, wherein the cooling system 3 includes a valve 301, a cooling pool 302, a circulation pump 303 and a cooling fan 304; the valve 31 is located at the discharge end of the cooling pool 32 to control the discharge of the cooling metal liquid, the cooling fan 33 is located on the cooling pool 32 and away from the discharge end, and the circulation pump 303 is located between the valve 301 and the cooling pool 302 to drive the circulation of the cooling metal liquid.

Specifically, in order to cool the cooled metal liquid, in this embodiment, the cooling system 3 includes a valve 31, a cooling pool 32 and a cooling fan 33. The valve 31 can be but is not limited to a non-metallic ball valve. The valve 31 is located at the discharge end of the cooling pool 32 and is used to control the discharge of the cooled metal liquid so that the cooled metal liquid is transported from the cooling pool 32 to the guide pipe 6 until it is filled with the homogeneous quenching nucleation rod 2. The circulating pump 303 is located between the valve 301 and the cooling pool 302. It can be understood that the cooling liquid filled with the homogeneous quenching nucleation rod 2 can be cooled by the setting of the circulating pump. The cooling molten metal is discharged from another outlet on the homogeneous quenching nucleation rod 2 and input into the cooling pool 32 from the feed end of the cooling pool 32, so as to realize the circulation of the cooling molten metal and cool it; the cooling pool 32 is a hard metal frame, and the cooling molten metal is stored inside the cooling pool 32. The cooling molten metal can be but is not limited to lead-tin alloy, and a slot for adding materials is provided; the cooling fan 33 is located on the cooling pool 32 and on the side away from the discharge end, and is used to cool the cooling molten metal circulated to the cooling pool 32 to prepare for the next cooling effect of the cooling molten metal.

In some embodiments, referring to FIG. 1 , the vibration quenching nucleation device provided in this embodiment, in a specific implementation, further includes a lifting device 9 , and the homogeneous quenching nucleation rod 2 is flexibly connected to the lifting device 9 .

Specifically, in order to stably convey the homogeneous quenching nucleation rod 2, the present embodiment also includes a lifting device 9, wherein the lifting device 9 is a general term for devices for moving the homogeneous quenching nucleation rod 2 along the first direction a, which may be but is not limited to a winch. The homogeneous quenching nucleation rod 2 is softly connected to the lifting device 9. It can be understood that when the homogeneous quenching nucleation rod 2 is slowly pulled out from the inside of the casting pool 1, due to the large size of the homogeneous quenching nucleation rod 2 itself, a large amount of floor space is wasted when it is completely pulled out. The homogeneous quenching nucleation rod 2 is connected to the winch, which can not only pull out the homogeneous quenching nucleation rod 2 but also reduce the overall floor space of the equipment and reduce the overall lifting height of the equipment. At the same time, the homogeneous quenching nucleation rod 2 is softly connected to the winch. It can be understood that when the homogeneous quenching nucleation rod 2 vibrates, the vibration will be transmitted to the winch, and the vibration effect of the homogeneous quenching nucleation rod 2 will be absorbed by the soft connection, which will not affect the operation of the winch and extend the service life of the winch.

In some embodiments, referring to FIG1 , the vibration quenching nucleation device provided in this embodiment, in a specific implementation, a limit slider 7 is provided at the feed end of the casting pool 1, and the limit slider 7 is connected to the homogeneous quenching nucleation rod 2 to limit the moving direction of the homogeneous quenching nucleation rod 2 and fix the position of the homogeneous quenching nucleation rod 2.

Specifically, in order to control the moving position of the homogeneous quenching nucleation rod 2, in this embodiment, a limit slider 7 is provided at the feed end of the casting pool 1. The limit slider 7 is a self-lubricating material such as a hard metal frame or a graphite frame. The homogeneous quenching nucleation rod 2 can pass through the limit slider 7 and extend into the interior of the casting pool 1. It can be understood that when the homogeneous quenching nucleation rod 2 extends into the interior of the casting pool 1, under the action of the limit slider 7, the position of the homogeneous quenching nucleation rod 2 inserted into the casting pool 1 can be limited, that is, located at the center position of the casting pool 1, and the homogeneous quenching nucleation rod 2 is limited to extend into the casting pool 1 along the first direction a for cooling.

In some embodiments, referring to FIG. 1 , the vibration quenching nucleation device provided in this embodiment, in a specific implementation, a heat-insulating sealing cap 8 is provided at the feed end of the casting pool 1 to prevent oxygen from entering the interior of the casting pool 1 and causing oxidation of the mold.

Specifically, in order to prevent oxygen from entering the interior of the casting pool 1, the present embodiment provides an insulation sealing cap 8 at the feed end of the casting pool 1, wherein the insulation sealing cap 8 is a hard metal cover body, and a leakage hole is provided on the insulation sealing cap to allow the homogeneous quenching nucleation rod 2 to pass through. It can be understood that the setting of the insulation sealing cap 8 can prevent oxygen from entering the interior of the casting pool 1. When oxygen enters the interior of the casting pool 1, it will cause oxidation of the molten metal and affect the quality of the ingot.

In some embodiments, referring to FIG. 1 , the vibration quenching nucleation device provided in this embodiment, in a specific implementation, the material of the homogeneous quenching nucleation rod 2 is the same as the material of the molten metal in the casting pool 1 .

Specifically, in order to ensure the purity of the casting, the material of the homogeneous quenching nucleation rod 2 in this embodiment is the same as the material of the molten metal in the casting pool 1, which can prevent impurities from other materials from mixing into the interior of the molten metal. It can be understood that when the homogeneous quenching nucleation rod 2 cools the molten metal, a small amount of substance will mix into the interior of the molten metal and cause pollution to the molten metal. However, when the materials are the same, it will not affect the purity of the molten metal.

In some embodiments, referring to FIG1 , the vibration quenching nucleation device provided in this embodiment, in a specific implementation, also includes a gas supply device 10; the gas supply device 10 includes an argon gas bottle 1001, a flow control valve 1002 and a connecting pipe 1003; the connecting pipe 1003 connects the argon gas bottle 1001 and the casting pool 1; to balance the change in air pressure in the casting pool 1 when the homogeneous quenching nucleation rod 2 moves or the molten metal in the casting pool 1 solidifies and shrinks, the flow control valve 1002 is connected to the discharge end of the argon gas bottle 1001 to adjust the amount of argon gas discharge according to an external control signal.

Specifically, in order to prevent air from entering the interior of the casting pool 1, the present embodiment also includes an air supply device 10, which includes an argon gas bottle 1001, a flow control valve 1002 and a connecting pipe 1003. The argon gas bottle 1001 and the connecting pipe 1003, the flow control valve 1002 is connected to the discharge end of the argon gas bottle 1001. It can be understood that when the homogeneous quenching nucleation rod 2 moves with the cooling process, due to the negative pressure environment inside the casting pool 1, the external air will be sucked in, so that the air is mixed into the molten metal, thereby affecting the quality of the final ingot. Therefore, the connecting pipe 1003 and the argon gas bottle 1001 can balance the air pressure inside the casting pool 1 to prevent external air from entering. At the same time, when the molten metal inside the casting pool 1 solidifies and shrinks, the same effect can be produced. The flow control valve 1002 is connected to an external controller, and the argon gas delivery amount can be adjusted according to the signal of the controller to control the air pressure inside the casting pool 1.

Embodiment 2

This embodiment provides a vibration quenching nucleation process method, which includes the following steps.

S1, connecting the homogeneous chilled nucleation rod 2 to the cooling system 3, and inputting cooling molten metal into the homogeneous chilled nucleation rod 2 until the air inside the homogeneous chilled nucleation rod 2 is discharged;

Among them, if there is air inside the homogeneous chilled nucleation rod 2, it will affect the cooling effect of the cooling metal liquid on the homogeneous chilled nucleation rod 2, and then affect the cooling effect of the casting pool 1. Therefore, after the air in the homogeneous chilled nucleation rod 2 is exhausted, the cooling effect of the homogeneous chilled nucleation rod 2 can be guaranteed;

S2, placing the homogeneous chilled nucleation rod 2 into the casting pool 1, and simultaneously starting the vibration device 4 to vibrate the homogeneous chilled nucleation rod 2, and at the same time circulating the cooled metal liquid in the homogeneous chilled nucleation rod 2 through the cooling system 3;

S3, detecting the temperature of the casting pool 1 by the temperature measuring probe 5, and controlling the vibration effect of the vibration device 4 on the homogeneous quenching nucleation rod 2, and at the same time slowly withdrawing the homogeneous quenching nucleation rod 2 from the inside of the casting pool 1 to control the nucleation rate and nucleation position of the equiaxed crystal;

Among them, the amplitude and vibration frequency of the vibration device 4 can be adjusted according to the temperature conditions of each area, and the formation rate of the equiaxed crystal can also be controlled;

S4, heating the extracted homogeneous quenched nucleation rod 2, and introducing an inert gas into the homogeneous quenched nucleation rod 2 to discharge the residual liquid metal;

The purpose of continuing to introduce gas into the homogeneous quenching nucleation rod 2 is to exhaust the residual liquid metal to prevent the liquid metal from solidifying after cooling and blocking the homogeneous quenching nucleation rod 2, thereby affecting the use of subsequent cooling. So far, the various embodiments of the present disclosure have been described in detail. In order to avoid obscuring the concept of the present disclosure, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solution disclosed here.

Although some specific embodiments of the present disclosure have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present disclosure. It should be understood by those skilled in the art that the above embodiments may be modified or some technical features may be replaced by equivalents without departing from the scope and spirit of the present disclosure. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there is no structural conflict.

Claims (5)

1. An apparatus for vibration chill nucleation, comprising:

The casting pool (1), the feed end of the casting pool (1) is inserted with a homogeneous chilling nucleation rod (2), the homogeneous chilling nucleation rod (2) is used for cooling the metal liquid in the casting pool (1), the homogeneous chilling nucleation rod (2) moves back and forth along a first direction relative to the casting pool (1) so as to change the distance extending into the casting pool (1), and the feed end of the casting pool (1) is also provided with a heat-insulating sealing cap (8) so as to prevent oxygen from entering the casting pool (1) to oxidize the metal liquid;

The cooling system (3) is positioned at one end of the homogeneous chilling nucleation rod (2) away from the casting pool (1) so as to cool the homogeneous chilling nucleation rod (2);

The vibration device (4) is positioned outside the casting pool (1) and is connected with the homogeneous chilling nucleation rod (2);

The temperature measuring probes (5) are positioned outside the casting pool (1), and the temperature measuring probes (5) are distributed outside the casting pool (1) at intervals along the first direction so as to detect the temperature of each position of the casting pool (1);

Lifting means (9); the homogeneous chilling nucleation rod (2) is in soft connection with the lifting device (9);

An air supply device (10); the air supplementing device (10) comprises an argon bottle (1001), a flow control valve (1002) and a connecting pipe (1003);

The connecting pipe (1003) is connected with the argon bottle (1001) and the casting pool (1); when the homogeneous chilling nuclear rod (2) moves or the molten metal in the casting pool (1) solidifies and contracts, the air pressure in the casting pool (1) is changed, and the flow control valve (1002) is connected with the discharge end of the argon bottle (1001) so as to adjust the argon conveying amount according to an external control signal;

Wherein the first direction is a gravitational direction.

2. A vibrating chilled nucleation device as claimed in claim 1, wherein,

The homogeneous chilling nucleation stick (2) is of a hollow structure and is internally provided with a flow guide pipe (6), the discharge end of the cooling system (3) is communicated with the flow guide pipe (6), and the feed end of the cooling system (3) is communicated with the inside of the homogeneous chilling nucleation stick (2) so as to form a cooling metal liquid circulation channel to cool the homogeneous chilling nucleation stick (2).

3. A vibrating chilled nucleation device as claimed in claim 2, wherein,

The cooling system (3) comprises a valve (301), a cooling tank (302), a circulating pump (303) and a cooling fan (304);

The valve (301) is located the discharge end of cooling bath (302), so as to control the transportation of cooling metal liquid, cooling bath (302) are used for storing cooling metal liquid, cooling fan (304) are located on cooling bath (302) and deviate from one side of discharge end, so as to cool down the cooling metal liquid in the cooling bath, circulating pump (303) are located between valve (301) and cooling bath (302), so as to drive the circulation of cooling metal liquid.

4. A vibrating chilled nucleation device as claimed in claim 1, wherein,

The feeding end of the casting pool (1) is provided with a limit sliding block (7), and the limit sliding block (7) is connected with the homogeneous chilling nucleation rod (2) so as to limit the moving direction of the homogeneous chilling nucleation rod (2) and limit the insertion position of the homogeneous chilling nucleation rod (2).

5. A vibrating chilled nucleation device as claimed in claim 1, wherein,

The material of the homogeneous chilling nucleation rod (2) is the same as the material of the molten metal in the casting pool (1).