Quenching device and equipment for semi-solid metal and control method

Abstract

The invention discloses a semi-solid pressure quenching device which is characterized in that a pressure heat exchange assembly comprises a first pressure heat exchange part, a second pressure heat exchange part and a pressure telescopic part, and the pressure telescopic part is connected with at least one of the first pressure heat exchange part and the second pressure heat exchange part; the cooling circulation assembly communicates with the first pressure heat exchange component and the second pressure heat exchange component to form a heat exchange circulation loop, pressure can be applied to the materials at the same time, cooling can be conducted, and the materials are prevented from generating cracks during quenching. The invention further discloses semi-solid metal quenching equipment which comprises the semi-solid metal quenching device, the semi-solid metal quenching equipment further comprises a heating furnace, and materials are fed into the semi-solid metal quenching device after being heated in the heating furnace. The invention further discloses a control method. Materials are subjected to pressure while exchanging heat with the first pressure heat exchange component and the second pressure heat exchange component so as to prevent the materials from generating cracks during quenching.

Description

Technical Field

[0001] This invention relates to the field of non-ferrous metal alloy manufacturing, and more specifically, to processing alloys under semi-solid conditions. Background Technology

[0002] Based on their physical state characteristics—liquid, solid, or a mixture of both—alloys are classified into solid alloys, liquid alloys, and semi-solid metals. Solid alloys are solid substances with metallic properties formed by combining two or more metals, or metals and non-metals, through melting, sintering, or other methods, followed by cooling and solidification. Atoms in the solid state form an ordered or disordered arrangement, distinguishing them from liquid or semi-solid metals. Semi-solid metals are slurries or billets where the solidification process is controlled by special techniques, resulting in a coexistence of solid and liquid phases. The liquid phase volume fraction is typically 5%-60%, with solid particles uniformly dispersed within the liquid phase, exhibiting characteristics of both solid and liquid states. Traditionally, the liquid phase volume fraction is 40-60%, without considering the issue of cracking.

[0003] Semi-solid metal forming, achieved through a solid-liquid mixture, represents a significant innovative technology in metal processing. Preparation methods for semi-solid metals include rheological forming and thixotropic forming. Rheological forming involves applying electromagnetic or mechanical stirring to the melt as it cools to the semi-solid region, breaking up dendrites to form a spherical solid slurry. Thixotropic forming involves reheating a pre-prepared solid alloy ingot to the semi-solid temperature range. It offers high process compatibility and is suitable for various processing methods such as casting, extrusion, and forging. Semi-solid formed parts are used in the automotive and aerospace industries, offering significant weight reduction, good heat dissipation, and higher tensile strength than traditional castings. A current challenge lies in the need to optimize the quenching process for semi-solid metals. Summary of the Invention

[0004] The inventors of this invention discovered that in traditional semi-solid metals, the liquid phase accounts for approximately 40-60%, and the smelted billets are directly formed using methods such as forging, extrusion, drawing, and stamping. It is important to note that in semi-solid metals with a liquid phase content of approximately 40-60%, the liquid state of the metal provides fluidity; therefore, there is no issue of billet cracking during the process, and there is no technological inspiration to address cracking in semi-solid metals through pressure.

[0005] Semi-solid metals, with approximately 40-60% liquid phase, are designed to overcome the defects in solid metal forming. First, the biggest problem with solid metals is their poor plasticity and high deformation resistance. Forming requires "high temperature, high pressure, and multiple processing steps", making it difficult to directly manufacture complex shapes. In contrast, the liquid matrix in semi-solid slurry acts as a lubricant, reducing friction between solid particles and allowing it to flow rapidly under shear force. This allows the material to fill complex mold cavities under pressure of 10-200MPa, and even achieve one-time forming. Second, solid metals have a strong tendency to inherit defects. If the original billet has porosity or shrinkage, subsequent solid processing is difficult to eliminate these defects and may even amplify them. Third, solid metals have long processing steps, high energy consumption, and low material utilization, resulting in high overall costs. Semi-solid metals achieve cost reduction and efficiency improvement through "near-net-shape forming and short process".

[0006] It is evident that semi-solid metals, traditionally composed of approximately 40-60% liquid phase, primarily aim to solve problems that solid metals cannot address, especially when manufacturing complex-shaped, high-performance, and highly reliable metal parts at a lower cost. In such cases, the properties of semi-solid metals far surpass those of solid metals. In contrast, traditional stress hardening, which is applied to solid metals, provides no compensation for shrinkage as the volume of the solid metal remains almost unchanged after quenching.

[0007] The inventors of this invention also discovered that in a micron-sized semi-solid metal, the liquid phase accounts for approximately 5-10% (core technology for sheet forming). Due to the low proportion of the liquid phase, the bar stock is prone to cracking during quenching. The reasons are multifaceted; taking semi-solid magnesium / aluminum alloys as an example... The inventors of this invention also discovered that the thicker the semi-solid metal bar, the higher the probability of cracking. For larger semi-solid metal bars, the difference in cooling rates between the core and the surface during quenching leads to cracking. When the liquid phase content is 5-10%, during solidification and shrinkage, the low liquid phase content results in poor feeding channels, making feeding difficult and easily causing cracks. A 5-10% liquid phase lacks fluidity. To address the problem of cracks occurring during the quenching of semi-solid metals, the inventors propose a semi-solid pressure quenching device, comprising a pressure heat exchange assembly and a cooling circulation assembly. The pressure heat exchange assembly includes a first pressure heat exchange component, a second pressure heat exchange component, and a pressure expansion component, with the pressure expansion component connected to at least one of the first and second pressure heat exchange components. The cooling circulation assembly is connected to both the first and second pressure heat exchange components to form a heat exchange circulation loop.

[0008] The beneficial effects of the semi-solid pressure quenching device in this embodiment of the invention are as follows: the pressure telescopic component is connected to at least one of the first pressure heat exchange component and the second pressure heat exchange component, thereby allowing the pressure telescopic component to raise and lower the pressure heat exchange component. When the two pressure heat exchange components are close together, pressure can be applied to the material. The applied pressure has an anti-shrinkage function, which can prevent the material from cracking during quenching. The cooling circulation component is connected to the first pressure heat exchange component and the second pressure heat exchange component respectively to form a heat exchange circulation loop. The first pressure heat exchange component and the second pressure heat exchange component exchange heat with the material, thereby the semi-solid pressure quenching device can simultaneously apply pressure and cool the material, preventing the material from cracking during quenching.

[0009] The inventors also proposed a semi-solid metal quenching device, which includes the aforementioned semi-solid metal quenching apparatus. The semi-solid metal quenching apparatus also includes a heating furnace, and the material is heated in the heating furnace and then fed into the semi-solid metal quenching apparatus.

[0010] The beneficial effects of the semi-solid pressure quenching equipment in this embodiment of the invention are: after the material is heated, the quenching process is completed in the semi-solid metal quenching equipment. The semi-solid pressure quenching device can simultaneously apply pressure to the material and cool it down, preventing the material from cracking during the quenching process.

[0011] The inventors also proposed a control method for the above-mentioned semi-solid metal quenching equipment. When the first pressure heat exchange component comes into contact with the raw material, the heat exchange circulation loop is started while the first pressure heat exchange component is continuously pressed down. The material is subjected to pressure while exchanging heat with the first pressure heat exchange component and the second pressure heat exchange component to prevent the material from cracking during quenching. Attached Figure Description

[0012] Figure 1 This is a three-dimensional schematic diagram of the semi-solid metal quenching equipment in an embodiment of the present invention; Figure 2 This is a three-dimensional schematic diagram of the semi-solid metal quenching device in an embodiment of the present invention; Figure 3 This is a perspective view of the first pressure heat exchange component, the second pressure heat exchange component, the first telescopic rod, and the second telescopic rod assembly in an embodiment of the present invention. Figure 4 This is a three-dimensional schematic diagram of the frame of the semi-solid metal quenching equipment in an embodiment of the present invention; Figure 5 , Figure 6 This is a three-dimensional schematic diagram of the cooling circulation component of the semi-solid metal quenching equipment in an embodiment of the present invention; Figure 7 This is a three-dimensional schematic diagram of the unloading of the semi-solid metal quenching device in an embodiment of the present invention; Figure 8 (a) is an experimental diagram showing cracks generated during conventional quenching; Figure 8 (b) is an experimental diagram showing no cracks after using the semi-solid metal quenching device in the embodiment of the present invention.

[0013] Figure label: Semi-solid metal quenching device 1, heating furnace 2, discharge conveyor belt 3; Pressure heat exchange assembly 10, first pressure heat exchange component 11, second pressure heat exchange component 12, first telescopic rod 13, second telescopic rod 14, frame 15, reinforcing plate 16, gap L, unloading telescopic rod 17. Cooling circulation assembly 20, cooling box 21, delivery pipe 22, cooling medium inlet 23, cooling medium outlet 24. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0015] Please refer to Figure 1 The present invention discloses a semi-solid metal quenching device, including a semi-solid metal quenching device 1, a heating furnace 2, and a discharge conveyor belt 3.

[0016] Semi-solid metal quenching equipment Please refer to Figure 2 The semi-solid metal pressure quenching device 1 includes a pressure heat exchange component 10 and a cooling circulation component 20.

[0017] Pressure heat exchange components The pressure heat exchange assembly 10 includes a first pressure heat exchange component 11, a second pressure heat exchange component 12, and a telescopic device.

[0018] First pressure heat exchange component, second pressure heat exchange component Please refer to Figure 2 When the first pressure heat exchange component 11 and the second pressure heat exchange component 12 are close together, a receiving space is formed between the first pressure heat exchange component 11 and the second pressure heat exchange component 12, which can accommodate the material to be quenched. After the first pressure heat exchange component 11 and the second pressure heat exchange component 12 are separated, the material to be quenched can be taken out from the receiving space.

[0019] The first pressure heat exchange component 11 has a first cavity 111 for accommodating the cooling medium, and the second pressure heat exchange component 12 has a second cavity 122 for accommodating the cooling medium.

[0020] After the first-pressure heat exchange component 11 and the second-pressure heat exchange component 12 are closed, the gap L between the first-pressure heat exchange component 11 and the second-pressure heat exchange component 12 is 0 < L < 10 cm. When the gap L is zero, the first-pressure heat exchange component 11 and the second-pressure heat exchange component 12 do not exert pressure on the material to be quenched and can play a role in cooling. When the gap L is greater than zero, the first-pressure heat exchange component 11 and the second-pressure heat exchange component 12 can exert pressure on the material to be quenched and can simultaneously exert pressure and cool the material to be quenched.

[0021] In one example, the gap between the first-pressure heat exchange component 11 and the second-pressure heat exchange component 12 is 1 cm, and the first-pressure heat exchange component 11 and the second-pressure heat exchange component 12 do not contact each other during quenching, so that pressure can be exerted on the material to be quenched.

[0022] In another example, the gap between the first-pressure heat exchange component 11 and the second-pressure heat exchange component 12 is 10 cm to accommodate thicker and larger materials to be quenched.

[0023] It should be understood that the gap between the first-pressure heat exchange component 11 and the second-pressure heat exchange component 12 can be zero. During quenching, the first-pressure heat exchange component 11 and the second-pressure heat exchange component 12 can be in full contact, and heat exchange with the component to be quenched can be achieved.

[0024] The first-pressure heat exchange component 11 and the second-pressure heat exchange component 12 are used to wrap the material to be quenched. In this embodiment, the longitudinal cross-sections of the first-pressure heat exchange component 11 and the second-pressure heat exchange component 12 are respectively semi-circular or small semi-circular. It should be understood that in other embodiments, the longitudinal cross-sections of the first-pressure heat exchange component 11 and the second-pressure heat exchange component 12 are triangular, rectangular, square, polygonal, etc. to accommodate materials to be quenched with different shapes.

[0025] Pressure expansion and contraction part The pressure expansion and contraction part is used to drive the movement of the first-pressure heat exchange component 11 and the second-pressure heat exchange component 12 to exert pressure on the material to be quenched.

[0026] Please refer to Figure 3 , the pressure expansion and contraction part includes at least one of the first expansion and contraction rod 13 and the second expansion and contraction rod 14.

[0027] Please return to refer to Figure 1 , in one example, the pressure expansion and contraction part includes the first expansion and contraction rod 13. One end of the first expansion and contraction rod 13 is connected to the first-pressure heat exchange component 11. The movement of the first expansion and contraction rod 13 drives the movement of the first-pressure heat exchange component 11. When the first-pressure heat exchange component 11 approaches the material to be quenched, it can exert pressure on the material to be quenched.

[0028] Please continue to refer to this. Figure 3 In another example, the pressure telescopic component includes a second telescopic rod 14. The second telescopic rod 14 is connected to a second pressure heat exchange component 12. The movement of the second telescopic rod 14 causes the movement of the second pressure heat exchange component 12. When the second pressure heat exchange component 12 is close to the material to be quenched, it can apply pressure to the material to be quenched.

[0029] In another example, the pressure telescopic component includes a first telescopic rod 13 connected to a first pressure heat exchange component 11 and a second telescopic rod 14 connected to a second pressure heat exchange component 12. Driven by the first telescopic rod 13 and the second telescopic rod 14, the first pressure heat exchange component 11 and the second pressure heat exchange component 12 apply pressure to the material to be quenched.

[0030] It should be understood that the larger and longer the material to be quenched, the more pressure expansion joints are needed. The number of pressure expansion joints can be increased according to the actual situation to increase the uniformity of pressure application.

[0031] Power source It should be understood that the function of the first telescopic rod 13 and the second telescopic rod 14 is to extend and retract, and the power source of the first telescopic rod 13 and the second telescopic rod 14 can be pneumatic, hydraulic or electric.

[0032] frame Please refer to Figure 1 and Figure 4 The semi-solid metal pressure quenching device 1 also includes a frame 15. In this embodiment, the frame 15 has mounting positions at both ends, and the two ends of the second pressure heat exchange component 12 are placed at these mounting positions. The first pressure heat exchange component 11 is connected to the frame via a first telescopic rod 13. Since the second pressure heat exchange component 12 is placed on the frame, when the first pressure heat exchange component 11 applies pressure to the material to be quenched, the second pressure heat exchange component 12 generates a reaction force on the material to be quenched, thereby applying pressure to the material to be quenched by both the first pressure heat exchange component 11 and the second pressure heat exchange component 12.

[0033] In another example, the first pressure heat exchange component 11 is fixedly connected to the frame 15, and the second pressure heat exchange component 12 is connected to the frame 15 via a telescopic device. In yet another example, the first pressure heat exchange component 11 is connected to the first telescopic rod 13, and the second pressure heat exchange component 12 is connected to the second telescopic rod 14, as shown below. Figure 3 As shown.

[0034] In this embodiment, the semi-solid metal pressure quenching device 1 further includes a reinforcing plate 16, with both ends of the reinforcing plate 16 connected to the frame 15, and the second pressure heat exchange component 12 placed on the reinforcing plate 16. When the first telescopic rod 13 applies pressure to the material to be quenched by the first pressure heat exchange component 11, the reinforcing plate 16 can disperse the pressure and prevent the second pressure heat exchange component 12 from deforming.

[0035] The semi-solid metal pressure quenching device 1 also includes a discharge telescopic rod 17, with both ends connected to the second pressure heat exchange component 12 and the frame 15, respectively. The discharge telescopic rod 17 is connected to the second pressure heat exchange component 12 at a position outside the center of gravity of the second pressure heat exchange component 12. When the discharge telescopic rod 17 extends, one end of the second pressure heat exchange component 12 rises, thereby unloading the quenching material. In a preferred embodiment, the end of the second pressure heat exchange component 12 away from the discharge telescopic rod 17 is hinged to the frame 15, thus making the operation of the second pressure heat exchange component 12 more stable during unloading.

[0036] Cooling circulation components Please refer to Figure 1 , 5 In this embodiment, the cooling circulation assembly 20 includes a cooling tank 21, a delivery pipe 22, and a circulation pump. In another embodiment, the cooling circulation assembly 20 further includes a cooling fan for cooling the cooling tank 21.

[0037] Cooling tank 21 is used to store the cooling medium. In one example, the cooling medium is a solution such as water, deionized water, or an aqueous solution of ethylene glycol. In another example, the cooling medium is mineral oil or synthetic oil. In yet another example, the cooling medium is a gas such as air, nitrogen, or argon.

[0038] In this embodiment, at least one of the first pressure heat exchange component 11 and the second pressure heat exchange component 12 forms a circulation of cooling medium, and the material to be quenched exchanges heat with the cooling medium, thereby reducing the temperature of the quenching material.

[0039] In one example, the first pressure heat exchange component 11 forms a first cooling cycle. One end of the delivery pipe 22 is connected to the cooling tank 21, and the other end of the delivery pipe 22 is connected to the inlet of the first pressure heat exchange component 11, and the outlet of the first pressure heat exchange component 11 is also connected to the cooling tank 21. A circulation pump is used to pump the cooling medium to form a first cooling cycle of the cooling medium between the cooling tank 21 and the first pressure heat exchange component 11.

[0040] In another example, the second pressure heat exchange component 12 forms a second cooling cycle. One end of the delivery pipe 22 is connected to the cooling tank 21, and the other end of the delivery pipe 22 is connected to the inlet of the second pressure heat exchange component 12, and the outlet of the second pressure heat exchange component 12 is also connected to the cooling tank 21. A circulation pump is used to pump the cooling medium to form a second cooling cycle of the cooling medium between the cooling tank 21 and the second pressure heat exchange component 12.

[0041] In another example, the first pressure heat exchange component 11 forms a first cooling cycle, and the second pressure heat exchange component 12 forms a second cooling cycle. Thus, the first and second cooling cycles improve the heat exchange efficiency between the cooling medium and the material to be quenched. In a preferred embodiment, the pipe connecting the first pressure heat exchange component 11 to the top frame is a flexible hose to avoid affecting the cooling cycle when the first pressure heat exchange component 11 is raised or lowered.

[0042] Please refer to Figure 2 , 5 Regarding point 6, it should be understood that the cooling medium inlet 23 and cooling medium outlet 24 of the first pressure heat exchange component 11 and the second pressure heat exchange component 12 can be configured as needed. In this embodiment, the inlet is located on one side wall of the first pressure heat exchange component 11 and the second pressure heat exchange component 12, and the outlet is located on the other side wall of the first pressure heat exchange component 11 and the second pressure heat exchange component 12. In another example, the inlet is located at the top or bottom of the first pressure heat exchange component 11 and the second pressure heat exchange component 12.

[0043] Simultaneous pressure application and cooling It is important to emphasize that the stress hardening method used in this embodiment for semi-solid metal involves simultaneous cooling and application of external force, thereby preventing cracks from forming in the semi-solid metal during the hardening process. If external force is applied to the semi-solid metal first, it will deform and crack. If cooling is applied first, the semi-solid metal will crack directly.

[0044] Please return to the reference. Figure 1 It should be noted that in this embodiment, the first pressure heat exchange component 11 and the second pressure heat exchange component 12 simultaneously perform both pressurization and cooling functions. In actual operation, the first pressure heat exchange component 11 is lifted by the first telescopic rod 13, the material to be quenched is placed into the second pressure heat exchange component 12, and the first pressure heat exchange component 11 is lowered by the first telescopic rod 13. When the first pressure heat exchange component 11 comes into contact with the material to be quenched, the circulation pump is turned on, thereby achieving simultaneous pressurization and cooling.

[0045] It is worth noting that in this embodiment, quenching involves the rapid solidification of the liquid metal within the semi-solid metal, and the applied external force primarily serves to compensate for the shrinkage. While the semi-solid metal solidifies rapidly, sufficient shrinkage is ensured. During solidification, the solid particles further compact, and the liquid phase fills the gaps to form a dense structure, typically accompanied by volume shrinkage. The applied external force compensates for this volume reduction, thus providing a shrinkage-compensating effect. This results in a more compact microstructure, preventing cracks from forming in the semi-solid metal during quenching.

[0046] Please refer to Figure 8 , Figure 8 (a) is an experimental diagram showing cracks generated during conventional quenching. Figure 8 (b) is an experimental diagram showing no cracks after using the semi-solid metal quenching device in the embodiment of the present invention. Operation of semi-solid metal quenching equipment Please refer to Figure 1 This indicates the operation of the semi-solid metal quenching equipment.

[0047] Feeding Place the material into heater 2.

[0048] heating After heating is complete, the material is fed into the second pressure heat exchange component 12 using tools such as pneumatic pressure, hydraulic pressure, or a robotic arm. In this embodiment, the heating furnace 2 is a continuous electromagnetic induction heater. It should be understood that the heating furnace can also be a continuous resistance heater, a box-type resistance heater, a gas heater, an infrared heater, or other heaters.

[0049] auxiliary conveyor belt In other embodiments, an auxiliary conveyor belt is provided between the induction furnace and the semi-solid metal quenching device to assist in feeding materials into the second pressure heat exchange component 12.

[0050] pressurization Please refer to Figure 3 The first telescopic rod 13 drives the first pressure heat exchange component 11 to move up and down. After the first pressure heat exchange component 11 rises, the material to be quenched is placed inside the second pressure heat exchange component 12. The first pressure heat exchange component 11 descends and, after contacting the material to be quenched, the first telescopic rod 13 continues to press down, thereby applying pressure to the material to be quenched. Since the second pressure heat exchange component 12 is placed on the frame 15, when the first pressure heat exchange component 11 applies pressure to the material to be quenched, the material to be quenched transmits the pressure to the second pressure heat exchange component 12. The second pressure heat exchange component 12 applies a reaction force to the material to be quenched, thereby achieving shrinkage preservation of the material to be quenched during quenching and preventing cracks from forming in the material to be quenched.

[0051] In this embodiment, the applied pressure P is 0 < P < 100 MPa. The specific magnitude of the pressure needs to be determined according to the size and material of the workpiece. The applied pressure can prevent the semi-solid metal from shrinking, and will not cause deformation or cracks.

[0052] Cooling cycle Please refer to Figure 2 , lower the first pressure heat exchange component 11. When the first pressure heat exchange component 11 contacts the material to be quenched, turn on the circulation pump. The first pressure heat exchange component 11, the cooling tank 21, the delivery pipe 22, and the circulation pump form a first cooling cycle, and the second pressure heat exchange component 12, the cooling tank 21, the delivery pipe 22, and the circulation pump form a second cooling cycle. Thus, pressure and cooling are simultaneously applied to the material to be quenched, thereby preventing cracks from occurring in the semi-solid metal material during quenching.

[0053] Unloading Please refer to Figure 7 , after quenching is completed, the unloading telescopic rod 17 extends upward. The reinforcement plate 16 is provided with corresponding holes through which the unloading telescopic rod 17 passes and moves. The unloading telescopic rod 17 pushes one end of the second exchange component 12 to rise, and the material after quenching falls from the inclined second pressure heat exchange component 12.

[0054] In a preferred embodiment, the end of the second pressure heat exchange component 12 that is farther away from the unloading telescopic rod 17 is hinged to the machine frame or the reinforcement plate 16, so that the operation of the second pressure heat exchange component 12 is more stable during unloading and the unloading is more stable.

[0055] Discharging Please return to refer to Figure 1 , the material coming out of the second pressure heat exchange component 12 falls onto the discharging conveyor belt 3, and the discharging conveyor belt 3 transports the material to the next process or other required places.

[0056] Control This embodiment also discloses a control method for a semi-solid metal quenching device. It should be understood that semi-automatic control can be achieved through a manipulator, a pneumatic tool, or a hydraulic tool.

[0057] S1. Heat the material to the target temperature; S2. Lift the first pressure heat exchange component 11; S3. Feed the material into the second pressure heat exchange component 12 of the semi-solid metal quenching device 1; S4. Lower the first pressure heat exchange component 11; S5. When the first pressure heat exchange component 11 contacts the raw material, start the circulation pump and continue to press down the first pressure heat exchange component 11. The material exchanges heat and is pressurized with the first pressure heat exchange component 11 and the second pressure heat exchange component 12; S6. After quenching is completed, lift the first pressure heat exchange component 11; S7. Raise the unloading telescopic rod 17, and the material falls from the second pressure heat exchange component 12 into the discharge conveyor belt 3.

[0058] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A semi-solid metal quenching device, comprising a pressure heat exchange component and a cooling circulation component; The pressure heat exchange component includes a first pressure heat exchange part, a second pressure heat exchange part and a pressure expansion part, and the pressure expansion part is connected to at least one of the first pressure heat exchange part and the second pressure heat exchange part; the cooling circulation component is respectively communicated with the first pressure heat exchange part and the second pressure heat exchange part to form a heat exchange circulation loop; during quenching, the first pressure heat exchange part and the second pressure heat exchange part apply pressure to the semi-solid metal raw material and cool it synchronously to prevent cracks from occurring in the semi-solid metal raw material during the quenching process.

2. The semi-solid metal quenching apparatus according to claim 1, characterized in that, The interiors of the first pressure heat exchange part and the second pressure heat exchange part respectively have cavities capable of accommodating a cooling medium.

3. The semi-solid metal quenching apparatus according to claim 2, characterized in that, After the first pressure heat exchange part and the second pressure heat exchange part are closed, the gap L between the first pressure heat exchange part and the second pressure heat exchange part is 0 < L < 10 cm.

4. The semi-solid metal quenching apparatus according to claim 1, characterized in that, The pressure expansion part includes at least one of a first expansion rod connected to the first pressure heat exchange part and a second expansion rod connected to the second pressure heat exchange part.

5. The semi-solid metal quenching apparatus according to claim 1, characterized in that, The semi-solid metal quenching device further includes a frame, and the second pressure heat exchange part is installed thereon; the pressure expansion part includes a first expansion rod, and both ends of the first expansion rod are respectively connected to the first pressure heat exchange part and the frame.

6. The semi-solid metal quenching apparatus according to claim 5, characterized in that, The frame further includes a reinforcement member for protecting the second pressure heat exchange part.

7. The semi-solid metal quenching apparatus according to claim 5, characterized in that, The semi-solid metal pressure quenching device further includes a discharging expansion rod, and both ends of the discharging expansion rod are respectively connected to the frame and the first pressure heat exchange part.

8. The semi-solid metal quenching apparatus according to claim 7, characterized in that, The end of the first pressure heat exchange part farther away from the discharging expansion rod is hinged to the first pressure heat exchange part.

9. The semi-solid metal quenching apparatus according to claim 1, characterized in that, The cooling circulation component includes a cooling tank and a conveying pipe, and the conveying pipe communicates the cooling tank and the first pressure heat exchange part to form a first heat exchange circulation.

10. The semi-solid metal quenching apparatus according to claim 9, characterized in that, The conveying pipe communicates the cooling tank and the second pressure heat exchange part to form a second heat exchange circulation.

11. The semi-solid metal quenching apparatus according to claim 1, characterized in that, The magnitude of the pressure P applied to the semi-solid metal raw material is 0 < P < 100 MPa.

12. A semi-solid metal quenching device, characterized in that... The semi-solid metal quenching equipment includes the semi-solid metal quenching device according to any one of claims 1-11, and the semi-solid metal quenching equipment further includes a heating furnace, and the material is sent into the semi-solid metal quenching device after being heated in the heating furnace.

13. The semi-solid metal quenching equipment according to claim 12, characterized in that, The semi-solid metal quenching equipment further includes a discharging conveyor belt, and the material is sent into the discharging conveyor belt after quenching.

14. A control method for controlling the semi-solid metal quenching equipment according to any one of claims 12-13, characterized in that, When the first pressure heat exchange part contacts the raw material, while starting the heat exchange circulation loop, continue to press down the first pressure heat exchange part, and the material undergoes heat exchange with the first pressure heat exchange part and the second pressure heat exchange part while being under pressure to prevent cracks from occurring in the material during quenching.

15. The control method according to claim 14, characterized in that, The method further includes: S1. Heating the material to a target temperature; S2. Lifting the first pressure heat exchange part of the semi-solid metal quenching device; S3. The material is fed into the second pressure heat exchange component of the semi-solid metal quenching device; S4. Lower the first pressure heat exchange component; S5. After quenching, lift the first pressure heat exchange component.

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