Centrifugal casting equipment and centrifugal casting method

Abstract

The invention provides centrifugal casting equipment and a centrifugal casting method. The invention provides centrifugal casting equipment. The centrifugal casting equipment comprises a controller, a rotary driving mechanism, a rotary base and a cover-shaped frame, the rotary driving mechanism is connected with the rotary base; the rotating driving mechanism is used for providing rotating force for the rotating base under the control of the controller; the rotating base is used for rotating under the driving of the rotating driving mechanism; a plurality of driving rotating arms are installed at the top of the rotating base, a composite die is fixed to the tail end of each driving rotating arm, and an object to be heated is contained in the composite die; the cover-shaped frame covers the top of the rotating base and comprises a cover face and a surrounding part extending downwards along the periphery of the cover face. Induction coils are arranged on the cover surface and the surrounding part to form a heating area; and the controller is further used for providing alternating current for the induction coil, and an electromagnetic field generated by the alternating current generates eddy current in the composite die so as to heat an object to be heated contained in the composite die which is driven to the heating area along with the driving arm.

Description

Technical Field

[0001] The present application relates to the technical field of casting, and in particular to a centrifugal casting device and a centrifugal casting method. Background Art

[0002] The casting technology of casting parts using molds is one of the important processes in the current metal processing field and is widely used in the manufacture of various metal parts. By heating the metal to a molten state and then pouring it into a mold to cool and shape it, large quantities of metal parts can be efficiently produced. However, when facing the casting of metal castings with complex shapes, it is difficult to ensure that the produced metal castings have the required complex shape by simply pouring the molten metal into the mold and cooling it. Summary of the invention

[0003] In view of this, the present application provides a centrifugal casting device and a centrifugal casting method to solve the problem of insufficient precision of metal castings produced by traditional casting.

[0004] Specifically, the present application is implemented through the following technical solutions:

[0005] A first aspect of the present application provides a centrifugal casting device, the centrifugal casting device comprising a controller, a rotary drive mechanism, a rotary base and a cover-shaped frame;

[0006] The rotation drive mechanism is connected to the rotation base; the rotation drive mechanism is used to provide a rotation force to the rotation base under the control of the controller; the rotation base is used to rotate under the drive of the rotation drive mechanism;

[0007] A plurality of driving arms are installed on the top of the rotating base, and a composite mold is fixed at the end of each driving arm. The composite mold contains an object to be heated, and the object to be heated is a block metal or a powdered metal;

[0008] The cover-shaped frame covers the top of the rotating base; the cover-shaped frame includes a cover surface and a surrounding portion extending downward along the four sides of the cover surface; an induction coil is arranged on the cover surface and the surrounding portion; the area enclosed by the cover surface and the surrounding portion constitutes a heating area;

[0009] Wherein, when the rotating base is not rotating, the end of each driving rotating arm is located at the composite mold loading and unloading area at the bottom of the rotating base; when the rotating base is rotating, the centrifugal force generated by the rotating base brings each driving rotating arm to the heating area;

[0010] The controller is also used to provide an alternating current to the induction coil, so that when the composite mold follows the driving arm and is brought to the heating area, the electromagnetic field generated by the alternating current generates eddy currents inside the composite mold to heat the object to be heated placed in the composite mold.

[0011] A second aspect of the present application provides a centrifugal casting method, which is implemented based on the centrifugal casting equipment shown in any of the above embodiments, and the centrifugal casting method comprises:

[0012] When the driving and rotating arm is in the composite mold loading area, the composite mold is fixed on the driving and rotating arm; wherein the composite mold contains an object to be heated; the object to be heated is a block metal or a powdered metal;

[0013] Controlling the rotary drive mechanism to drive the rotary base to rotate, so that when the rotary base rotates, each driving arm is brought to the heating area by the centrifugal force generated by the rotary base;

[0014] Providing an alternating current to the induction coil, so that the composite mold generates eddy currents under the action of the alternating electromagnetic field generated by the alternating current, and heats the object to be heated through the eddy currents;

[0015] When the preset heating time is reached, stopping supplying the alternating current to the induction coil;

[0016] The rotating base is controlled to stop rotating, and the composite mold is unloaded when the driving arm falls back to the composite mold loading area.

[0017] Optionally, controlling the rotating base to stop rotating includes:

[0018] After the supply of the alternating current to the induction coil stops, immediately controlling the rotating base to stop rotating;

[0019] or,

[0020] After stopping supplying the alternating current to the induction coil, controlling the rotating base to continue rotating so as to cool the composite mold under the action of centrifugal force;

[0021] When the preset cooling time is reached, the rotating base is controlled to stop rotating.

[0022] Optionally, after the preset cooling time is reached, after the rotating base is controlled to stop rotating, the method further includes:

[0023] A casting is obtained from the composite mold, and an impurity layer in the casting is removed.

[0024] The centrifugal casting equipment and the centrifugal casting method provided by the present application are provided with a controller, a rotary drive mechanism, a rotary base and a cover-shaped frame, and the rotary drive mechanism is connected to the rotary base, so that a plurality of rotary drive arms are installed on the top of the rotary base, and a composite mold is fixed at the end of each rotary drive arm, and an object to be heated is placed in the composite mold, and the object to be heated is a block metal or a powdered metal, so that the cover-shaped frame covers the top of the rotary base; the cover-shaped frame includes a cover surface and a surrounding portion extending downward along the four sides of the cover surface; an induction coil is arranged on the cover surface and the surrounding portion ; The area enclosed by the cover surface and the surrounding portion constitutes a heating area, so that when the rotating base is not rotating, the end of each driving arm is located at the composite mold loading and unloading area at the bottom of the rotating base, and when the rotating base rotates, the centrifugal force generated by the rotating base brings each driving arm to the heating area. Furthermore, an alternating current is provided to the induction coil through a controller, so that when the composite mold follows the driving arm and is brought to the heating area, an eddy current is generated inside the composite mold by the electromagnetic field generated by the alternating current, so as to heat the object to be heated placed in the composite mold. Thus, during the centrifugal casting process, the rapid rotation of the composite mold generates a strong centrifugal force, which pushes the molten metal outward and makes it flow into the finest parts of the composite mold. The centrifugal force can effectively reduce the influence of surface tension, ensure that complex features are fully filled, and minimize the risk of incomplete casting, thereby improving the accuracy of casting. In addition, during the casting process, the uniform pressure exerted by the centrifugal force can lead to more uniform cooling and solidification. This uniformity helps to maintain the integrity of fine features, reduce shrinkage, warping and deformation. Furthermore, consistent pressure throughout the casting process ensures that the final product closely matches the expected geometry. On the other hand, the centrifugal force can push bubbles and impurities away from the outer surface of the composite mold and concentrate them on the outside of the casting. In this way, the possibility of porosity or bubble defects in key areas of the part can be minimized, thereby improving the overall density and structural integrity of the final component. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic diagram of a first embodiment of a centrifugal casting device provided in the present application;

[0026] Figure 2 A schematic diagram of a rotating base according to an exemplary embodiment of the present application;

[0027] Figure 3 A schematic diagram of a driving arm according to an exemplary embodiment of the present application;

[0028] Figure 4 A partial schematic diagram of a cover-shaped frame shown as an exemplary embodiment of the present application;

[0029] Figure 5 A schematic diagram of a composite mold shown as an exemplary embodiment of the present application;

[0030] Figure 6 A schematic diagram of a second embodiment of the centrifugal casting equipment provided in the present application;

[0031] Figure 7 This is a flow chart of Example 1 of the centrifugal casting method provided in this application.

[0032] Description of reference numerals:

[0033] 1: Rotating base;

[0034] 11: base;

[0035] 12: spindle;

[0036] 13: Top seat;

[0037] 2: Cover frame;

[0038] 21: Covering;

[0039] 22: surrounding part;

[0040] 23: induction coil;

[0041] 3: Drive rotating arm;

[0042] 31: Composite mold installation part;

[0043] 311: horizontal part;

[0044] 312: vertical part;

[0045] 313: knob bracket;

[0046] 4: Composite mold;

[0047] 41: Shell;

[0048] 42: insulating material layer;

[0049] 43: initial mold;

[0050] 431: material storage tank;

[0051] 432: expected pattern area;

[0052] 44: fixed knob;

[0053] 5: Heating area.

[0054] 6: conveyor belt;

[0055] 7: Robot. DETAILED DESCRIPTION

[0056] Here, exemplary embodiments are described in detail, and examples thereof are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application.

[0057] The terms used in this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The singular forms of "a", "said" and "the" used in this application are also intended to include plural forms, unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used in this article refers to and includes any or all possible combinations of one or more associated listed items.

[0058] It should be understood that although the terms first, second, third, etc. may be used in the present application to describe various information, these information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present application, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining".

[0059] Specific embodiments are given below to introduce the technical solution of the present application in detail.

[0060] Figure 1 This is a schematic diagram of the first embodiment of the centrifugal casting equipment provided in this application. Please refer to Figure 1 , Figure 1 Figure (A) is a schematic diagram of the centrifugal casting equipment when it is not in operation. Figure 1 (B) is a schematic diagram of the centrifugal casting device in operation. The centrifugal casting device provided in this embodiment includes a controller (not shown in the figure), a rotary drive mechanism (not shown in the figure), a rotary base 1 and a cover-shaped frame 2;

[0061] The rotation drive mechanism is connected to the rotation base 1; the rotation drive mechanism is used to provide a rotation force to the rotation base 1 under the control of the controller; the rotation base 1 is used to rotate under the drive of the rotation drive mechanism;

[0062] A plurality of driving arms 3 are installed on the top of the rotating base 1, and a composite mold 4 is fixed at the end of each driving arm 3. The composite mold 4 contains an object to be heated, and the object to be heated is a block metal or a powdered metal;

[0063] The cover-shaped frame 2 covers the top of the rotating base 1; the cover-shaped frame 2 includes a cover surface 21 and a surrounding portion 22 extending downward along the periphery of the cover surface 21; an induction coil 23 is arranged on the cover surface 21 and the surrounding portion 22; the area enclosed by the cover surface 21 and the surrounding portion 22 constitutes a heating area 5;

[0064] When the rotating base 1 is not rotating, the end of each driving arm 3 is located at the composite mold loading and unloading area at the bottom of the rotating base 1; when the rotating base 1 is rotating, the centrifugal force generated by the rotating base 1 brings each driving arm 3 to the heating area 5;

[0065] The controller is also used to provide an alternating current to the induction coil 23, so that when the composite mold 4 is brought to the heating area 5 following the driving arm, the electromagnetic field generated by the alternating current generates eddy currents inside the composite mold 4, so as to heat the object to be heated placed in the composite mold 4.

[0066] It should be noted that the centrifugal casting equipment provided by the present application is used to cast metal parts by induction heating and centrifugal casting, and is particularly suitable for manufacturing metal parts of complex shapes. Among them, the metal parts can be any type of metal parts. Preferably, the metal parts can be thermal management components (thermal management components include heat sinks and heat spreaders, etc.). It should be noted that the thermal management component must have a highly precise geometric structure, while ensuring that there are no pores or impurities inside it, so as to avoid these defects significantly weakening the thermal conductivity of the material, thereby affecting the overall thermal management efficiency.

[0067] The centrifugal casting equipment is used to apply centrifugal force to the melting process of block metal or powder metal, so that the metal material heated to a molten state can fully flow into and fill the inside of the mold, and at the same time, the pores or impurities inside the metal material can be effectively removed, thereby producing high-quality metal parts with precise shape and strong thermal conductivity.

[0068] Furthermore, the rotation drive mechanism is connected to the rotation base 1 by a mechanical connection, and the rotation drive mechanism provides a rotation force for the rotation base 1, so that the rotation base 1 can rotate according to preset rotation parameters under the drive of the rotation drive mechanism. Among them, the preset rotation parameters include rotation rate, rotation acceleration, etc. By controlling the rotation force applied by the rotation drive mechanism to the rotation base 1, various rotation parameters can be adjusted.

[0069] It should be noted that the mechanical connection method between the rotary drive mechanism and the rotary base can be selected according to the design requirements of the centrifugal casting equipment, and is not limited in this application. For example, in one embodiment, when high stability and high precision rotation are required, the rotary drive mechanism and the rotary base can be connected through a coupling; for another example, in another embodiment, when the rotation speed and rotation precision need to be strictly controlled, the rotary drive mechanism and the rotary base can be connected through a gear transmission mechanism.

[0070] Furthermore, when using the centrifugal casting equipment for production casting, the preset rotation parameters can be set according to actual needs, and are not limited in this application. For example, in one embodiment, in order to ensure the uniform distribution of the metal material during the centrifugal process, a larger rotation rate can be preset; in another embodiment, in order to control the stability and accuracy of the flow of the metal material, a smaller rotation rate can be preset.

[0071] For further information, please refer to Figure 1 A plurality of driving arms 3 are installed on the top of the rotating base 1, and a composite mold 4 is fixed at the end of each driving arm 3. The composite mold 4 contains an object to be heated. The object to be heated is a block metal or a powdered metal. The object to be heated is melted by heat during the casting process, fully flows and fills the interior of the composite mold 4, and then a metal part corresponding to the internal shape of the composite mold 4 is obtained after cooling and solidification.

[0072] It should be noted that the specific type of the object to be heated can be selected according to different casting requirements, and is not limited in this application. For example, in one embodiment, large-scale casting is required, and block metal can be selected as the object to be heated; in another embodiment, high-precision or complex-shaped castings are required, and powdered metal can be selected as the object to be heated.

[0073] Figure 2 This is a schematic diagram of a rotating base shown in an exemplary embodiment of the present application, please refer to Figure 2 The rotating base 1 includes a base 11, a main shaft 12 and a top seat 13; wherein the main shaft 12 is fixed on the base 11, and the top seat 13 is fixed on the top of the main shaft 12; the main shaft 12 can rotate under the drive of the rotating drive mechanism to drive the top seat 13 to rotate;

[0074] The plurality of driving arms 3 are mounted on the outer circumferential surface of the top seat 13 .

[0075] Specifically, the base 11 of the rotating base 1 serves as a support and fixing platform for the centrifugal casting equipment and is installed on the ground or other supporting structures. It is necessary to ensure that the rotating base 1 will not be displaced or tilted during high-speed rotation to ensure safety during the centrifugal casting process; further, the main shaft 12 of the rotating base 1 is fixed on the base 11, and the top seat 13 is connected to the main shaft 12, wherein the main shaft 12, as the core component of the rotating base 1, can drive the top seat 13 to rotate together under the driving action of the rotational force provided by the rotating drive mechanism, and then drive the rotation of multiple driving arms 3 on the outer peripheral surface of the base 11. In this way, under the driving action of the rotational force provided by the rotating drive mechanism, the rotating base 1 rotates, driving the driving arm 3 and the composite mold 4 fixed at the end of the driving arm 3 to rotate together, so that the object to be heated inside the composite mold 4 is evenly distributed and heated under the centrifugal force, thereby achieving the casting effect required for production casting.

[0076] It can be understood that when the rotary drive mechanism provides a rotational force to the rotary base 1, the base 11 of the rotary base 1 remains fixed, providing a strong stabilizing effect for the entire centrifugal casting equipment, and the main shaft 12 and the top seat 13 are driven to rotate by the rotational force provided by the rotary drive mechanism, thereby driving the driving arm 3 on the top to rotate.

[0077] It should be noted that, referring to the previous description, when the rotary drive mechanism drives the rotary base 1 to rotate, the spindle 12 is fixed on the base 11, and when the spindle 12 rotates, the base 11 does not rotate. Optionally, in a possible implementation, the spindle 12 and the base 11 can be connected by a keyway. Specifically, the spindle 12 and the base 11 are respectively provided with a machined keyway, and then the spindle 12 and the base 11 are fixed together by a key, so that the key prevents the spindle 12 from rotating and driving the base 11 to rotate together, and the base 11 remains stable during the rotation of the spindle 12.

[0078] Furthermore, the top seat 13 rotates together with the main shaft 12 during the rotation process, and the driving arm 3 is connected to the outer peripheral surface of the top seat 13 and rotates together with the top seat 13. Therefore, the top seat 13 and the main shaft 12, and the driving arm 3 and the top seat 13 can be connected by mechanical connection to ensure that during the rotation process, the top seat 13 can withstand the centrifugal force generated during the rotation and remain stable, and the driving arm 3 does not separate from the top seat 13 during the rotation process.

[0079] Optionally, in one possible implementation, the top seat and the main shaft, the driving arm and the top seat can be connected by bolt fixing; in another possible implementation, the top seat and the main shaft, the driving arm and the top seat can be connected by snap connection.

[0080] It should be noted that the connection modes between the top seat and the main shaft, and between the driving arm and the top seat may not be the same, and can be selected according to actual needs. For example, in one embodiment, the top seat and the main shaft can be connected by bolts, and the driving arm and the top seat can be connected by snap-fit ​​connection.

[0081] Furthermore, the number of the driving arms on the top seat is set according to actual needs, and is not limited in this embodiment. For example, in one possible implementation, two driving arms or four driving arms are symmetrically installed on the top seat; for another example, in another possible implementation, a plurality of driving arms are evenly distributed on the periphery of the top seat.

[0082] Optionally, in a possible implementation, a composite mold mounting portion is provided at the end of each driving and rotating arm, and the composite mold is fixed on the composite mold mounting portion;

[0083] Wherein, when each driving arm moves to the heating area, the composite mold is supported above the composite mold mounting portion and is firmly fixed by the composite mold mounting portion.

[0084] Figure 3 This is a schematic diagram of a driving arm shown in an exemplary embodiment of the present application, please refer to Figure 3 Please also refer to Figure 1 and Figure 3 ,from Figure 1 and Figure 3 As can be seen, the end of the driving arm 3 is provided with an L-shaped composite mold mounting portion 31, and the composite mold 4 is fixed on the composite mold mounting portion 31. For further information, please continue to refer to Figure 3 The portion of the L-shaped mounting portion that is in the same straight line as the driving arm 3 is the horizontal portion 311, and the portion of the L-shaped mounting portion that is perpendicular to the driving arm 3 is the vertical portion 312. The horizontal portion 311 provides additional support and fixation for the composite mold 4, and the vertical portion 312 provides stable suspension for the composite mold 4 through the connection with the driving arm 3 to prevent the composite mold 4 from falling off.

[0085] It should be noted that the connection mode between the driving arm and the composite mold mounting portion can be selected according to actual needs, and is not limited in this application. For example, in one embodiment, the driving arm and the composite mold mounting portion can be connected by fixing bolts.

[0086] For further information, please refer to Figure 1In the middle (B) figure, when the rotary drive mechanism applies a rotary force to the rotary base 1, the main shaft 12 and the top seat 13 in the rotary base 1 rotate, driving the multiple driving arms 3 connected to the outer periphery of the top seat 13 to rotate. Through the action of centrifugal force, the driving arms 3 and the composite mold mounting portion 31 set at the end of the driving arms 3 gradually rise and tend to be horizontal. At this time, the composite mold 4 is firmly supported above the composite mold mounting portion 31 by the horizontal portion 311 in the composite mold mounting portion 31 supporting the composite mold 4 and the vertical portion 312 connecting the composite mold 4, so that the composite mold 4 can be continuously rotated in the heating area 5, and the composite mold 4 is heated by the heating area 5. In addition, the horizontal portion 311 can also provide support for the composite mold 4, so that the composite mold 4 rotates in the horizontal plane.

[0087] Figure 4 This is a partial schematic diagram of a cover-shaped frame shown in an exemplary embodiment of the present application. Please also refer to Figure 1 and Figure 4 The centrifugal casting equipment provided in the present application also includes a cover-shaped frame 2, which includes a cover surface 21 and a surrounding portion 22 extending downward along the four sides of the cover surface 21, wherein the cover surface 21 covers the top of the rotating base 1 and is located directly above the top seat 13, and its coverage range is larger than the coverage range of the combined mechanism formed by the driving arm 3 and the composite mold 4 when the rotating base 1 is in a rotating state. In this way, the cover surface 21 and the surrounding portion 22 extending downward along the cover surface 21 cover the combined mechanism in the rotating state. Further, an induction coil 23 is provided on the cover surface 21 and the surrounding portion 22, and the position of the induction coil 23 is set at a position where the cover surface 21 and the surrounding portion 22 form an angle area (on the cover surface 21, the induction coil 23 is at an edge position, and the length of the induction coil 23 is greater than the length of the composite mold 4). In this way, when the composite mold 4 is in a horizontal rotation state through the centrifugal force generated by the rotation of the rotating base 1, the composite mold 4 can be formed in a semi-enclosed state. In this way, during the heating process of the composite mold 4, the composite mold 4 can be stably and evenly heated.

[0088] Furthermore, when the rotating base 1 is not rotating, the end of each driving arm 3 is located at the composite mold loading and unloading area at the bottom of the rotating base 1 ; when the rotating base 1 is rotating, the centrifugal force generated by the rotating base 1 brings each driving arm 3 to the heating area 5 .

[0089] The working principle of the centrifugal casting equipment provided by this application is briefly introduced below:

[0090] Specifically, during operation, the controller controls the rotary drive mechanism to provide a specified rotary force to the rotary base 1 to meet actual needs, and provides an alternating current to the induction coil 23. In this way, under the action of the rotary force, when the composite mold 4 follows the driving arm to be brought to the heating area 5, further, at this time, an alternating current exists inside the induction coil 23, and the electromagnetic field generated by the induction coil 23 under the action of the alternating current, further, the above electromagnetic field generates eddy currents inside the composite mold 4 to heat the object to be heated placed in the composite mold 4.

[0091] Referring to the above description, it can be understood that the centrifugal casting equipment provided in this embodiment has at least the following advantages:

[0092] 1. Eliminate the need to pre-melt metal, reducing handling risks and improving process control.

[0093] 2. The pivoting arm mechanism allows for automatic compound mold loading and unloading, improving efficiency and reducing manual intervention.

[0094] 3. The pivoting arm is lifted due to centrifugal force during operation, allowing the composite mold to remain firmly in place while rotating, enhancing safety and ease of operation.

[0095] 4. The pivoting arm mechanism eliminates the need for complex mechanical systems or manual intervention during the mold loading and unloading stages, reducing downtime and labor costs.

[0096] 5. Automating the mold changing process by using a pivoting arm mechanism can speed up production cycles and make centrifugal casting more competitive in large-scale production runs.

[0097] The centrifugal casting equipment provided in this embodiment is provided with a controller, a rotary drive mechanism, a rotary base and a cover-shaped frame, and the rotary drive mechanism is connected to the rotary base, so that a plurality of rotary drive arms are installed on the top of the rotary base, and a composite mold is fixed at the end of each rotary drive arm, and an object to be heated is placed in the composite mold, and the object to be heated is a block metal or a powdered metal, so that the cover-shaped frame covers the top of the rotary base; the cover-shaped frame includes a cover surface and a surrounding portion extending downward along the four sides of the cover surface; an induction coil is arranged on the cover surface and the surrounding portion; The area enclosed by the cover surface and the surrounding part constitutes a heating area, so that when the rotating base is not rotating, the end of each driving arm is located at the composite mold loading and unloading area at the bottom of the rotating base, and when the rotating base rotates, the centrifugal force generated by the rotating base brings each driving arm to the heating area. Furthermore, an alternating current is provided to the induction coil through a controller, so that when the composite mold follows the driving arm and is brought to the heating area, an eddy current is generated inside the composite mold by the electromagnetic field generated by the alternating current, so as to heat the object to be heated placed in the composite mold. Thus, during the centrifugal casting process, the rapid rotation of the composite mold generates a strong centrifugal force, which pushes the molten metal outward and makes it flow into the finest parts of the composite mold. The centrifugal force can effectively reduce the influence of surface tension, ensure that complex features are fully filled, and minimize the risk of incomplete casting, thereby improving the accuracy of casting. In addition, during the casting process, the uniform pressure exerted by the centrifugal force can lead to more uniform cooling and solidification. This uniformity helps to maintain the integrity of fine features, reduce shrinkage, warping and deformation. Furthermore, consistent pressure throughout the casting process ensures that the final product closely matches the expected geometry. On the other hand, the centrifugal force can push bubbles and impurities away from the outer surface of the composite mold and concentrate them on the outside of the casting. In this way, the possibility of porosity or bubble defects in key areas of the part can be minimized, thereby improving the overall density and structural integrity of the final component.

[0098] The following is an introduction to the specific structure inside the composite mold. Figure 5 This is a schematic diagram of a composite mold shown in an exemplary embodiment of the present application, please refer to Figure 5 In a possible implementation, the composite mold 4 includes a shell 41, an insulating material layer 42 and an initial mold 43;

[0099] The insulating material layer 42 is contained inside the housing 41 to form a cavity for containing and fixing the initial mold 43;

[0100] The initial mold 43 is fixed in the cavity; the initial mold 43 is provided with a material receiving groove 431 and a desired pattern area 432; the material receiving groove 431 is used to receive the object to be heated; during the heating process, the object to be heated is heated to a molten state and then flows into and fills the desired pattern area 432 to form the desired casting after cooling.

[0101] It should be noted that the composite mold 4 is used to cast delicate metal parts, including radiators, etc. It is tightly mounted on the end of the drive arm and fixed using a fixing knob 44. During the casting process, the fixing knob 44 firmly locks the composite mold 4 in place, ensuring stable and accurate positioning even during high-speed rotation. When the drive arm 3 is in a hanging state (i.e., the end of the drive arm is located at the composite mold loading and unloading area at the bottom of the rotating base), the composite mold 4 can be easily put into place, and the fixing knob 44 allows quick release, so that the composite mold 4 can be quickly removed after the casting process is completed.

[0102] Specifically, the composite mold 4 provided in the present application has a fixing knob 44 on the shell 41; the composite mold mounting portion 31 is provided with a knob bracket 313; when the composite mold 4 is fixed to the composite mold mounting portion 31, the fixing knob 44 is fixed to the knob bracket 313 to firmly fix the composite mold 4 to the composite mold mounting portion 31.

[0103] Please also refer to Figure 3 and Figure 5 , Figure 5 In the figure, a spherical fixing knob 44 is arranged on the top of the composite mold 4. Furthermore, a knob bracket 313 is also arranged on the composite mold mounting portion 31. By hanging and fixing the fixing knob 44 on the knob bracket 313, the composite mold 4 can be firmly fixed on the composite mold mounting portion 31.

[0104] Please continue to refer to Figure 5 , Figure 5 The composite mold 4 is surrounded by a shell 41, and a cavity is formed inside the composite mold 4. An insulating material layer 42 and an initial mold 43 are arranged inside the cavity, wherein the insulating material layer 42 is located at the outermost side of the surrounding area inside the shell 41. In this way, during the heating of the object to be heated inside the composite mold 4, heat loss can be prevented, the heating efficiency can be improved, and it also helps to maintain the heating stability of the composite mold 4 by the heating area 5.

[0105] Optionally, the shell of the composite mold is made of non-induction material, the initial mold is made of induction material, or the object to be heated is made of induction material.

[0106] It should be noted that, referring to the previous description, in the present application, an induction heating method is used to heat the object to be heated. Specifically, an induction coil 23 is provided on the cover surface 21 and the surrounding portion 22 in the cover-shaped frame 2. When the composite mold 4 is in a horizontally rotating state and close to the induction coil 23, an alternating current is provided to the induction coil 23. At this time, an alternating magnetic field is generated around the induction coil 23, and eddy currents are induced inside the induction material in the magnetic field. The eddy currents will generate resistance during the flow process, thereby causing the induction material to heat up internally, and then the temperature rises rapidly. In this embodiment, the induction coil 23 is required to heat the object to be heated inside the composite mold 4. Therefore, the outer shell 41 of the composite mold 4 is made of non-induction material. Further, in a possible implementation method, the object to be heated is an induction material, so that the object to be heated can be directly heated. In another possible implementation method, the initial mold 43 can be made of induction material. At this time, the object to be heated can be indirectly heated.

[0107] Furthermore, the initial mold 43 is surrounded by an insulating material layer 42, including a material receiving groove 431 and a desired pattern area 432. When the centrifugal casting equipment is not running, the selected object to be heated is added to the material receiving groove 431. At this time, the object to be heated is in block or powder form. After the centrifugal equipment starts to run, the composite mold 4 is in a horizontal rotation state, and the heating area 5 heats it to melt it, and under the action of centrifugal force, it flows into and fills the desired pattern area 432. After cooling, the desired casting can be obtained.

[0108] The centrifugal casting equipment provided in this embodiment comprises a composite mold including an outer shell, an insulating material layer and an initial mold. A fixed knob is also arranged on the outer shell, and a knob bracket for installing the fixed knob is correspondingly arranged on the composite mold mounting portion. By installing the fixed knob on the knob bracket, the composite mold can be firmly mounted on the composite mold mounting portion and will not fall off during the centrifugal casting process. Furthermore, a cavity is formed by the outer shell inside the composite mold, and an insulating material layer is arranged on the outermost layer inside the cavity to prevent heat loss during the heating process and enhance the heating effect and stability. A material receiving groove for placing the object to be heated and a desired pattern area to be filled after the object to be heated is melted are arranged in the initial mold inside the insulating material layer. In this way, the flow path of the object to be heated after melting can be accurately controlled to ensure that a casting of a desired shape can be obtained.

[0109] Figure 6 For a schematic diagram of the second embodiment of the centrifugal casting equipment provided in this application, please refer to Figure 6 In a possible implementation, the centrifugal casting equipment further includes a material loading and unloading mechanism;

[0110] The material loading and unloading structure includes a conveyor belt 6 and a robot 7 placed on the conveyor belt 6; the conveyor belt 6 is used to move the robot 7 to a specified position when loading and unloading the composite mold 4;

[0111] The robot 7 is used to install the composite mold 4 in the loading area at the end of the driving arm 3 through the multiple robotic arms thereon to process the composite mold 4, and unload the processed composite mold 4 from the end of the driving arm 3 to the unloading area through the multiple robotic arms.

[0112] For details, please refer to Figure 6 In this embodiment, the material loading and unloading mechanism includes a conveyor belt 6 and a robot 7 on the conveyor belt 6. The left side of the conveyor belt 6 is the initial position, and the right side of the conveyor belt 6 near the composite mold 4 is the specific position. The robot 7 is transported to the specific position via the conveyor belt 6. The mechanical arm on the robot 7 enables it to grab the composite mold 4 to be processed from the loading area at the specific position, and install the composite mold 4 at the end of the driving arm 3. Then, the conveyor belt 6 is used to transport the robot 7 back to the initial position so that the composite mold 4 can be centrifugally cast using the centrifugal casting equipment; further, after processing the composite mold 4, the robot 7 is used to grab the processed composite mold 4 from the end of the driving arm 3, and the processed composite mold 4 is unloaded to the unloading area. In this way, the material loading and unloading structure can realize the automated operation of loading and unloading the composite mold 4, which greatly improves the operating efficiency.

[0113] It should be noted that the initial position and the designated position of the robot 7 on the conveyor belt 6 can be set according to actual conditions, and are not limited in this application. Further, the loading area is an area for placing the composite mold 4 to be processed, and the unloading area is a position for placing the composite mold 4 after the centrifugal casting process that is unloaded by the robot 7. Further, the specific positions of the loading area and the unloading area are set according to actual needs, and are not limited in this embodiment.

[0114] The centrifugal casting equipment provided in this embodiment can achieve efficient and automated processing of composite molds by introducing a material loading and unloading mechanism, which can not only reduce manual intervention and significantly improve processing efficiency, but also achieve full-process automated operation from loading to unloading. In addition, through multi-point control of the robotic arm, the accuracy of mold positioning and processing can be ensured, and further, potential risks during manual operation can be avoided.

[0115] Corresponding to the aforementioned centrifugal casting equipment, the present application also provides a centrifugal casting method, and the centrifugal casting method provided by the present application is introduced below.

[0116] Figure 7This is a flow chart of the first embodiment of the centrifugal casting method provided in this application. Please refer to Figure 7 The centrifugal casting method provided in this embodiment is implemented based on any one of the centrifugal casting devices provided in the first aspect of the present application, and the centrifugal casting method comprises:

[0117] S701. When the driving arm is in the composite mold loading area, fix the composite mold on the driving arm; wherein the composite mold contains an object to be heated; and the object to be heated is a block metal or a powder metal.

[0118] In this step, first, block metal or powdered metal as the object to be heated is loaded into the material receiving groove of the composite mold, and then the composite mold is placed in the loading area. The robot grabs the composite mold from the loading area, and then the robot is transported to the designated position by a conveyor belt. When the driving arm is in the loading area of ​​the composite mold, the robot's mechanical arm is used to fix the composite mold on the knob bracket at the end of the driving arm through a fixed knob.

[0119] S702, controlling the rotation driving mechanism to drive the rotating base to rotate, so that when the rotating base rotates, each driving arm is brought to the heating area by the centrifugal force generated by the rotating base.

[0120] In this step, the controller controls the rotation drive mechanism to apply a rotational force to the rotating base, driving the rotating base to rotate, and then driving the driving arm and the composite mold fixed at the end of the driving arm to rotate together. As the rotation rate continues to increase, under the action of centrifugal force, the composite mold gradually tends to a horizontal rotation state until the composite mold is in a horizontal rotation state and the position of the composite mold is surrounded by the heating area in the cover-shaped frame.

[0121] S703, supplying an alternating current to the induction coil, so that the composite mold generates eddy currents under the action of the alternating electromagnetic field generated by the alternating current, and heats the object to be heated through the eddy currents.

[0122] In this step, an alternating current is provided to the induction coil in the cover-shaped frame, and the induction coil generates an alternating magnetic field around it. When the object to be heated inside the composite mold rotates, the induction material inside the composite mold will induce eddy currents. The resistance generated during the flow of the eddy currents causes the induction material to heat up, thereby heating the object to be heated.

[0123] See the previous description, please refer to Figure 5In one possible implementation, the outer shell 41 of the composite mold 4 is a non-inductive material, and the inductive material inside is an initial mold 43. When the object to be heated in the material containing groove 431 rotates, eddy currents are induced inside the initial mold 43, causing the initial mold 43 to heat up, thereby indirectly heating the object to be heated. In another possible implementation, the object to be heated is an inductive material. When the object to be heated rotates, eddy currents are induced inside the object to be heated, causing the object to be heated to heat up internally and directly heat itself.

[0124] S704: When the preset heating time is reached, stop supplying the alternating current to the induction coil.

[0125] In this step, the heating time for the object to be heated is preset, and after the preset heating time is completed, the alternating current is stopped from being supplied to the induction coil, thereby stopping the heating.

[0126] It should be noted that the preset heating time is set according to the casting requirements and is not limited in this application.

[0127] S705, controlling the rotating base to stop rotating, and unloading the composite mold when the driving arm falls back to the composite mold loading area.

[0128] In this step, controlling the rotating base to stop rotating includes:

[0129] After the supply of the alternating current to the induction coil stops, immediately controlling the rotating base to stop rotating;

[0130] or,

[0131] After stopping supplying the alternating current to the induction coil, controlling the rotating base to continue rotating so as to cool the composite mold under the action of centrifugal force;

[0132] When the preset cooling time is reached, the rotating base is controlled to stop rotating.

[0133] It should be noted that, in a possible implementation, after the preset cooling time is reached, after the rotating base is controlled to stop rotating, the method may further include obtaining the casting from the composite mold and removing an impurity layer in the casting.

[0134] Specifically, after the centrifugal casting operation is completed, the casting inside the composite mold needs to be cooled. At this time, two different ways are provided to cool it. In one possible implementation, after stopping the supply of alternating current to the induction coil, the rotating base is immediately controlled to stop rotating, and then the robot is controlled to operate the mechanical arm to unload the processed composite mold and place it in the unloading area for cooling. In this way, the unprocessed composite mold can continue to be loaded, which speeds up the work efficiency; in another possible implementation, after stopping the supply of alternating current to the induction coil, the rotating base is continued to be controlled to rotate, and the composite mold is continuously cooled for a preset cooling time under the action of centrifugal force. After cooling is completed, the rotating base is controlled to stop rotating. In this way, the gradual cooling during the centrifugal process can remove bubbles and impurities inside the casting through the action of centrifugal force, thereby improving the quality of the obtained casting.

[0135] The centrifugal casting method provided in this embodiment, firstly, by fixing the composite mold on the driving arm, and then using the centrifugal force generated by the rotating base to place the composite mold in the heating area, it can effectively ensure that the composite mold is heated evenly; secondly, by applying an alternating current to the induction coil inside the cover-shaped frame to generate an alternating magnetic field, the induction material inside the composite mold generates eddy currents in the alternating electromagnetic field, generates heat, and thus heats the object to be heated, thereby ensuring the efficiency and accuracy of heating the heated object; thirdly, after heating the composite mold for a preset heating time, the application of the induction current to the induction coil is stopped, thereby stopping the heating of the composite mold, and two possible methods are provided for cooling the casting inside the composite mold, wherein the composite mold is placed in the unloading area for cooling after the heating is completed, and the composite mold is directly replaced by a robot, which can speed up the casting efficiency of the casting; after the heating is completed, a centrifugal operation is then performed, and bubbles and impurities inside the casting are removed under the action of centrifugal force, which can improve the quality of the casting produced; in this way, an appropriate cooling method can be selected according to actual needs to obtain the desired casting. In summary of the foregoing description, the centrifugal casting method provided in this embodiment can not only improve the efficiency of centrifugal casting, but also optimize the uniformity of material heating, and has high practicality and reliability.

[0136] The centrifugal casting apparatus and centrifugal casting method provided by the present application can be used to prepare thermal management components, such as heat sinks and heat spreaders, which must have high thermal conductivity and fine geometry to maximize surface area and improve heat dissipation efficiency. If there are pores or impurities in these components, their thermal conductivity will be severely reduced, resulting in poor performance and possibly overheating the equipment they are intended to cool.

[0137] Conventional casting methods are generally not suitable for producing high-precision radiators because the required geometries are complex. In addition, machining these components is time-consuming, costly, and remains challenging, especially for complex designs. If the loading and unloading problems of centrifugal casting can be solved, this method can become an ideal solution for radiator production, capable of producing high-quality components with minimal defects, precise geometry, and optimized thermal conductivity. The centrifugal casting equipment provided in this embodiment successfully solves the loading and unloading problems and has strong applicability.

[0138] In addition, the centrifugal casting equipment and centrifugal casting method provided by the present application, by alloying during the centrifugal process, under the action of centrifugal force, undesirable impurities such as foreign matter, oxides and residual bubbles can be effectively separated, greatly reducing the need for post-processing and ensuring that an ingot that can be directly rolled is obtained. The ingot produced by this method is particularly suitable for solder preforms or thermal interface material preforms, in which applications, material purity and structural integrity are critical. The method ensures the removal of undesirable impurities without affecting the alloying elements and maintaining the uniformity of the material composition.

[0139] It should be noted that centrifugal casting equipment is generally not capable of separating elements in an alloy. Alloying elements are chemically bonded at the atomic level, forming solid solutions or intermetallic compounds. When the components are not chemically bonded, such as in a mixture or suspension, centrifugal casting equipment effectively separates substances based on density differences. However, in alloys, the elements are thoroughly mixed and bonded, making physical separation by centrifugation ineffective. To separate the elements in an alloy, methods like electrolysis, chemical reduction, or selective melting are required, rather than centrifugation. Therefore, this process maintains the desired composition of the alloy while focusing on removing impurities like oxides and residual bubbles. In addition, the ingots produced by the centrifugal casting method are thinned to micron-level thicknesses and formed into long rolls of foil, from which thousands of preforms can be produced.

[0140] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A centrifugal casting device, characterized in that: The centrifugal casting device comprises a controller, a rotary drive mechanism, a rotary base and a cover-shaped frame; The rotation drive mechanism is connected to the rotation base; the rotation drive mechanism is used to provide rotation force to the rotation base under the control of the controller; The rotating base is used to rotate under the drive of the rotating drive mechanism; A plurality of driving arms are installed on the top of the rotating base, and a composite mold is fixed at the end of each driving arm. The composite mold contains an object to be heated, and the object to be heated is a block metal or a powdered metal; The cover-shaped frame covers the top of the rotating base; the cover-shaped frame includes a cover surface and a surrounding portion extending downward along the four sides of the cover surface; an induction coil is arranged on the cover surface and the surrounding portion; the area enclosed by the cover surface and the surrounding portion constitutes a heating area; Wherein, when the rotating base is not rotating, the end of each driving rotating arm is located at the composite mold loading and unloading area at the bottom of the rotating base; when the rotating base is rotating, the centrifugal force generated by the rotating base brings each driving rotating arm to the heating area; The controller is also used to provide an alternating current to the induction coil, so that when the composite mold follows the driving arm and is brought to the heating area, the electromagnetic field generated by the alternating current generates eddy currents inside the composite mold to heat the object to be heated placed in the composite mold.

2. The centrifugal casting equipment according to claim 1, characterized in that: The centrifugal casting equipment also includes a material loading and unloading mechanism; Wherein, the material loading and unloading structure includes a conveyor belt and a robot placed on the conveyor belt; wherein, the conveyor belt is used to move the robot to a specified position when loading and unloading a composite mold; The robot is used to install the composite mold in the loading area at the end of the driving arm through the multiple mechanical arms thereon to process the composite mold, and unload the processed composite mold from the end of the driving arm to the unloading area through the multiple mechanical arms.

3. The centrifugal casting equipment according to claim 1, characterized in that: A composite mold mounting portion is provided at the end of each driving and rotating arm, and the composite mold is fixed on the composite mold mounting portion; Wherein, when each driving and rotating arm moves to the heating area, the composite mold is supported above the composite mold mounting portion and is firmly fixed by the composite mold mounting portion.

4. The centrifugal casting equipment according to claim 3, characterized in that: The composite mold comprises a shell, an insulating material layer and an initial mold; Wherein, the insulating material layer is accommodated inside the shell to form a cavity for accommodating and fixing the initial mold; The initial mold is fixed in the cavity; the initial mold is provided with a material containing groove and a desired pattern area; the material containing groove is used to contain the object to be heated; during the heating process, the object to be heated is heated to a molten state and then flows into and fills the desired pattern area to form the desired casting after cooling.

5. The centrifugal casting equipment according to claim 4, characterized in that: The housing is provided with a fixed knob; the composite mold mounting portion is provided with a knob bracket; when the composite mold is fixed to the composite mold mounting portion, the fixed knob is fixed to the knob bracket to firmly fix the composite mold to the composite mold mounting portion.

6. The centrifugal casting equipment according to claim 5, characterized in that: The rotating base comprises a base, a main shaft and a top seat; Wherein, the main shaft is fixed on the base, and the top seat is fixed on the top of the main shaft; the main shaft can rotate under the drive of the rotation drive mechanism to drive the top seat to rotate; The plurality of driving arms are mounted on the outer peripheral surface of the top seat.

7. The centrifugal casting equipment according to claim 4, characterized in that: The housing is made of non-inductive material; The initial mold is made of induction material, or the object to be heated is an induction material.

8. A centrifugal casting method, characterized in that: The centrifugal casting method is implemented based on the centrifugal casting equipment according to any one of claims 1 to 7, and the centrifugal casting method comprises: When the driving and rotating arm is in the composite mold loading area, the composite mold is fixed on the driving and rotating arm; wherein the composite mold contains an object to be heated; the object to be heated is a block metal or a powdered metal; Controlling the rotary drive mechanism to drive the rotary base to rotate, so that when the rotary base rotates, each driving arm is brought to the heating area by the centrifugal force generated by the rotary base; Providing an alternating current to the induction coil, so that the composite mold generates eddy currents under the action of the alternating electromagnetic field generated by the alternating current, and heats the object to be heated through the eddy currents; When the preset heating time is reached, stopping supplying the alternating current to the induction coil; The rotating base is controlled to stop rotating, and the composite mold is unloaded when the driving arm falls back to the composite mold loading area.

9. The centrifugal casting method according to claim 8, characterized in that: Controlling the rotating base to stop rotating comprises: After the supply of the alternating current to the induction coil stops, immediately controlling the rotating base to stop rotating; or, After stopping supplying the alternating current to the induction coil, controlling the rotating base to continue rotating so as to cool the composite mold under the action of centrifugal force; When the preset cooling time is reached, the rotating base is controlled to stop rotating.

10. The centrifugal casting method according to claim 9, characterized in that: After the preset cooling time is reached, after the rotating base is controlled to stop rotating, the method further includes: A casting is obtained from the composite mold, and an impurity layer in the casting is removed.

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