Casting device using thermal simulation testing machine, casting simulation method and casting preparation method

Abstract

The invention discloses a casting device utilizing a thermal simulation testing machine, a casting simulation method and a casting preparation method, the thermal simulation testing machine is provided with a fixed end and a movable end, and the casting device comprises a smelting die with a containing cavity, a movable end anvil fixedly connected with the movable end and a fixed end anvil fixedly connected with the fixed end. The containing cavity penetrates through one end of the smelting die to form a first opening part, one end of the movable end anvil head extends into the containing cavity from the first opening part and can slide in the extending direction of the containing cavity, and the fixed end anvil head is fixedly arranged at the other end of the smelting die. According to the casting device, through the heating function of the thermal simulation testing machine, a sample in the smelting die can be heated to a molten state, and molten liquid is extruded into the die to be cooled or directly cooled according to subsequent experiment requirements, so that a casting is formed; according to the method for forming the casting, the material cost of materials in a large-scale integrated die-casting trial-manufacturing experiment can be effectively reduced, so that the research and development efficiency of the materials is improved.

Description

Technical Field

[0001] The invention relates to the technical field of metallurgical equipment, and in particular to a casting device utilizing a thermal simulation test machine, a casting simulation method and a casting preparation method. Background Art

[0002] At a time when the automotive manufacturing industry is vigorously developing lightweight, with the continuous innovation of production technology, the application of integrated die-casting aluminum alloys is becoming more and more extensive. For the research and development of aluminum alloy materials, it is necessary to repeatedly adjust the alloy elements in the material composition design stage to determine the best alloy element ratio that meets the performance requirements. However, the current integrated die-casting equipment is large in size, and the material loss of a die-casting aluminum alloy trial production is at least hundreds of kilograms, which greatly increases the cost of material research and development.

[0003] Moreover, in the existing technology, thermal simulation test technology is still mainly used to verify the impact of internal structural changes of materials on material properties under high-temperature processes such as rolling, forging, and welding. The above production processes mainly conduct experiments at temperatures below the liquidus line of the material, and there is currently no relevant experiment on the material above the liquidus temperature.

[0004] In addition, in the prior art, the casting process is simulated to determine the final process parameters generally through software. Although various aspects of casting simulation are relatively mature, the solidification process of aluminum liquid under stress such as high-pressure die casting is difficult to simulate. At present, it is only corrected by empirical formulas accumulated from a large number of experiments. Summary of the invention

[0005] The object of the present invention is to provide a casting device using a thermal simulation test machine which can realize low-cost casting preparation in view of the deficiencies in the prior art.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is:

[0007] The present invention provides a casting device using a thermal simulation test machine, the thermal simulation test machine has a fixed end and a movable end, the casting device includes a melting mold with a accommodating cavity, a movable end anvil head for fixedly connected to the movable end, and a fixed end anvil head for fixedly connected to the fixed end, the accommodating cavity penetrates one end of the melting mold to form a first opening portion, one end of the movable end anvil head extends into the accommodating cavity from the first opening portion, and can be slidably arranged along the extension direction of the accommodating cavity, and the fixed end anvil head is fixedly arranged at the other end of the melting mold arranged opposite to the one end.

[0008] In some embodiments, the accommodating cavity penetrates the other end of the smelting mold to form a second opening, and one end of the fixed-end anvil extends into the accommodating cavity from the second opening.

[0009] In some embodiments, the casting device also includes a casting mold arranged on the fixed end anvil, the casting mold is provided with a cavity matching the casting, the fixed end anvil is provided with a guide groove, one end of the guide groove is connected to the accommodating cavity, and the other end of the guide groove is connected to the cavity.

[0010] In some embodiments, the casting mold is further provided with a vent hole that connects the cavity with the outside and a filter screen arranged at the vent hole.

[0011] In some embodiments, the casting mold is disposed above the fixed end anvil, and the vent hole is located above the cavity and passes through the upper end surface of the casting mold.

[0012] In some embodiments, the casting device further comprises a heat preservation device disposed on the casting mold for maintaining the casting mold at a set temperature.

[0013] In some embodiments, the casting device further comprises a cooling device disposed on the melting mold for cooling;

[0014] The accommodating chamber extends in the left-right direction, and the temperature-reducing devices are respectively arranged on the smelting molds located at the upper part and the lower part of the accommodating chamber.

[0015] In some embodiments, the casting device further includes a temperature sensor disposed on the melting mold for testing the temperature in the accommodating cavity.

[0016] In some embodiments, the smelting mold includes a lower mold and an upper mold arranged above the lower mold, the top of the lower mold is provided with an opening, and the upper mold is arranged at the opening position; a positioning structure is arranged between the upper mold and the lower mold, the positioning structure includes a convex portion arranged on one of the upper mold and the lower mold and a concave portion arranged on the other, the convex portion is clamped in the concave portion; the positioning structures are respectively arranged on opposite sides of the opening.

[0017] In some embodiments, the melting mold is also provided with a vent hole that connects the accommodating cavity with the outside and a filter screen arranged at the vent hole. The vent hole is arranged above the accommodating cavity and passes through the upper end surface of the melting mold.

[0018] The present invention also provides a casting simulation method using a thermal simulation test machine, using any of the casting devices described above to perform casting simulation, the simulation method comprising:

[0019] (1) Connect the casting device to the thermal simulation test machine;

[0020] (2) by means of displacement control of the thermal simulation test machine, the movable end anvil is moved to a set position of the accommodating chamber, so that a material melting zone is formed in the accommodating chamber;

[0021] (3) placing a sample to be melted having the same material composition as the casting into the material melting zone;

[0022] (4) starting a heating program of the thermal simulation test machine, raising the temperature in the accommodating cavity to a preset temperature, maintaining the temperature for a preset time to ensure that the metal in the accommodating cavity is completely melted, and then closing the heating program;

[0023] (5) moving the movable end anvil to compress the molten metal solution, controlling the pressure or speed of the movable end anvil during the movement of the movable end anvil, and controlling the temperature in the material melting zone to cool and form a casting;

[0024] (6) Testing the mechanical properties of the casting formed in step (5), and adjusting the process parameters in steps (4) and (5) according to the test results until the mechanical properties of the formed casting meet the set requirements.

[0025] The present invention also provides a method for preparing a casting using a thermal simulation test machine, wherein the casting is prepared using a casting device as described in any one of the above items, and the preparation method comprises:

[0026] (1) Connect the casting device to the thermal simulation test machine;

[0027] (2) by means of displacement control of the thermal simulation test machine, the movable end anvil is moved to a set position of the accommodating cavity of the melting mold, so that a material melting zone is formed in the accommodating cavity of the melting mold;

[0028] (3) placing a sample to be melted having the same material composition as the casting into the material melting zone;

[0029] (4) starting a heating program of the thermal simulation test machine, raising the temperature in the accommodating cavity to a preset temperature, maintaining the temperature for a preset time to ensure that the metal in the accommodating cavity is completely melted, and then closing the heating program;

[0030] (5) The movable end anvil is moved to compress the molten metal solution. During the movement of the movable end anvil, the pressure or speed of the movable end anvil is controlled according to different casting test requirements, and the temperature in the material melting zone is controlled to cool and form a casting.

[0031] Due to the application of the above technical scheme, the present invention has the following advantages compared with the prior art: the casting device of the present invention using the thermal simulation test machine can heat the sample in the melting mold to a molten state through the heating function of the thermal simulation test machine, and according to the needs of subsequent experiments, the molten liquid is squeezed into the mold to cool down or directly cooled to form a casting. This method of forming a casting can effectively reduce the material cost of the material in large-scale integrated die-casting trial production experiments, thereby improving the efficiency of material research and development. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Attached Figure 1 It is a three-dimensional schematic diagram of a casting device using a thermal simulation test machine of this embodiment;

[0033] Attached Figure 2 A schematic side view of a casting device using a thermal simulation test machine according to this embodiment;

[0034] Attached Figure 3 For attachment Figure 2 A schematic cross-sectional view along line AA;

[0035] Attached Figure 4 It is a front view schematic diagram of a casting device using a thermal simulation test machine of this embodiment;

[0036] Attached Figure 5 For attachment Figure 4 A schematic cross-sectional view along line AA (without the fixing device and the fixing end);

[0037] Attached Figure 6 For attachment Figure 4 A schematic cross-sectional view along line BB (without the fixing device and the fixing end);

[0038] Attached Figure 7 It is a top view schematic diagram of the casting device using the thermal simulation test machine of this embodiment (without the fixing device and the fixing end).

[0039] Among them: 1. melting mold; 11. lower mold; 111. accommodating cavity; 112. recessed portion; 12. upper mold; 121. convex portion; 13. first through hole; 2. movable end anvil; 3. fixed end anvil; 31. guide groove; 4. casting mold; 41. cavity; 42. vent hole; 5. fixing device; 600. fixed end; 700. movable end. DETAILED DESCRIPTION

[0040] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like are based on the directions or positional relationships shown in the accompanying drawings, such as Figure 3 In the figure, the left side direction is "left", the right side direction is "right", the upper side direction is "up", the lower side direction is "down", and the directions perpendicular to the paper plane in the figure are "front" and "back", which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or device referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0042] Example 1

[0043] like Figure 1 to Figure 7 As shown, the casting device using the thermal simulation test machine of the present invention includes a melting mold 1, a movable end anvil 2, a fixed end anvil 3 and a casting mold 4.

[0044] The thermal simulation test machine has a fixed end 600 and a movable end 700, the movable end anvil 2 is fixedly connected to the movable end 700, and the fixed end anvil 3 is fixedly connected to the fixed end 600. The movable end anvil 2 can be slidably arranged at one end of the melting mold 1, and the fixed end anvil 3 is fixedly arranged at the other end of the melting mold 1 opposite to the one end. The casting mold 4 is fixedly arranged on the fixed end anvil 3. The movement of the movable end anvil 2 can be controlled by the thermal simulation test machine, and operations such as heating can be performed.

[0045] Specifically, the melting mold 1 includes a lower mold 11 and an upper mold 12 arranged above the lower mold 11. A receiving cavity 111 is arranged in the lower mold 11, and the receiving cavity 111 passes through one end of the lower mold 11 to form a first opening. One end of the movable end anvil 2 extends into the receiving cavity 111 from the first opening, and can be slidably arranged along the extension direction of the receiving cavity 111. The fixed end anvil 3 is fixedly arranged at the other end of the lower mold 11 opposite to the one end.

[0046] The accommodating cavity 111 may also penetrate the other end of the accommodating cavity 111 to form a second opening, and one end of the fixed end anvil 3 may extend into the accommodating cavity 111 from the second opening, thereby achieving the connection between the fixed end anvil 3 and the lower mold 11 and sealing the second opening at the same time, thereby forming a material melting zone between the movable end anvil 2, the fixed end anvil 3 and the front and rear side walls of the lower mold 11.

[0047] The top of the lower mold 11 is provided with an opening so as to place the sample to be melted into the receiving cavity 111 of the lower mold 11. The upper mold 12 is arranged at the opening position to block the opening, so that the receiving cavity 111 forms a closed cavity.

[0048] A positioning structure is provided between the upper die 12 and the lower die 11 to facilitate positioning and fixing the upper die 12 on the lower die 11. The positioning structure includes a convex portion 121 provided on one of the upper die 12 and the lower die 11 and a concave portion 112 provided on the other, and the convex portion 121 is adapted to the concave portion 112. When the upper die 12 and the lower die 11 are connected, the convex portion 121 is clamped in the concave portion 112.

[0049] Preferably, the positioning structures are disposed on opposite sides of the opening. In this embodiment, the convex portions 121 are disposed on the left and right sides of the upper mold 12, and the concave portions 112 are disposed on the left and right sides of the opening on the lower mold 11.

[0050] The casting device also includes a cooling device, which is arranged on the melting mold 1 to cool the melting mold 1 .

[0051] In this embodiment, the accommodating chamber 111 extends in the left-right direction, and the temperature-lowering devices are respectively arranged on the melting mold 1 located at the upper part and the lower part of the accommodating chamber 111 .

[0052] Specifically, the lower mold 11 and the upper mold 12 are both provided with a first through hole 13 penetrating the front and rear end surfaces thereof, and the cooling device may include a pipeline penetrating the first through hole 13, and the pipeline may be filled with a cooling medium, so as to cool the melting mold 1.

[0053] The casting device further includes a temperature sensor, which is disposed on the melting mold 1 and is used to monitor the temperature in the accommodating cavity 111. In this embodiment, the temperature sensors are respectively disposed on the lower mold 11 and the upper mold 12, and the temperature sensors may be thermocouples.

[0054] The casting mold 4 is provided with a cavity 41 matching the casting, and the fixed end anvil 3 is provided with a guide groove 31, one end of the guide groove 31 is connected with the accommodating cavity 111 in the lower mold 11, and the other end of the guide groove 31 is connected with the cavity 41 of the casting mold 4. In this way, the molten metal in the accommodating cavity 111 can enter the cavity 41 of the casting mold 4 under the extrusion of the movable end anvil 2, and the casting can be formed after the molten metal is cooled.

[0055] The casting mold 4 can be arranged in various ways according to different mold cavities 41, so that castings with different structural forms can be prepared.

[0056] The casting mold 4 is also provided with a vent hole 42 for connecting the cavity 41 therein with the outside. The vent hole 42 is provided so that when the molten metal flows into the cavity 41 of the casting mold 4, the air in the cavity 41 can be discharged to reduce the bubbles in the casting, thereby affecting the performance of the casting. The vent hole 42 also has a certain observation function. If the molten metal is observed to come out of the vent hole 42 during the casting process, it means that the cavity 41 of the casting mold 4 has been fully filled.

[0057] In this embodiment, the casting mold 4 is arranged above the fixed end anvil 3, so that the space occupied by the casting device in the thermal simulation test machine is minimized. The vent hole 42 is located above the cavity 41 and is arranged through the upper end surface of the casting mold 4, so that while the air in the cavity 41 is removed, the molten liquid will not flow out in large quantities to cause risks to equipment or personnel.

[0058] A filter is provided near the outside of the vent hole 42 to prevent dust and impurities in the external environment from entering the cavity 41 of the casting mold 4, thereby affecting the quality of the formed casting.

[0059] The casting device further comprises a heat-insulating device, which is arranged on the casting mold 4 to keep the casting mold 4 at a certain temperature before the molten liquid enters the casting mold 4 .

[0060] In this embodiment, the casting mold 4 and the front and rear sides, or the left and right sides of the cavity 41 may be provided with second through holes (not shown in the figure) penetrating the opposite end faces thereof, and a heating device may be provided in the second through holes, and the heating device may heat the casting mold 4 to keep the casting mold 4 at a specific temperature. The heating device may be an electric heating device, or the heating device may be implemented by passing a heating medium into a pipeline.

[0061] The casting device may further include a fixing device 5, which is disposed in the thermal simulation test machine, and the melting mold 1 and the fixed end anvil 3 are both disposed on the fixing device 5. By providing the fixing device 5, the connection and matching between the various components of the casting device can be facilitated.

[0062] The material of the melting mold 1, the movable end anvil 2, the fixed end anvil 3 and the casting mold 4 can be one of hot working die steel, tungsten carbide or nickel alloy.

[0063] Example 2

[0064] In this embodiment, the casting device may not include the casting mold 4, so that the guide groove 31 does not need to be provided in the fixed end anvil 3. At this time, the accommodating cavity 111 of the melting mold 1 is both a smelting zone for melting the metal material and a cavity for forming the casting. At this time, it is necessary to provide a vent hole on the upper mold 12 to discharge the air in the accommodating cavity 111 when the casting is formed.

[0065] Example 3

[0066] The casting simulation method using a thermal simulation test machine of the present invention specifically comprises the following steps:

[0067] (1) Spray an appropriate amount of anti-sticking mold solvent onto the parts of the melting mold 1, the movable end anvil 2, the fixed end anvil 3 and the casting mold 4 that are in contact with the molten metal.

[0068] (2) Connect the fixing device 5 in the thermal simulation test machine, connect the melting mold 1 and the fixed end anvil 3 to the fixing device 5, connect the melting mold 1 and the fixed end anvil 3, fix the casting mold 4 to the fixed end anvil 3, connect the fixed end anvil 3 to the fixed end 600 of the thermal simulation test machine, and connect the movable end anvil 2 to the movable end 700 of the thermal simulation test machine.

[0069] (3) Through the displacement control of the thermal simulation test machine, the movable end anvil 2 is moved to the set position of the accommodating cavity 111 of the melting mold 1, so that a material melting zone is formed between the movable end anvil 2, the fixed end anvil 3 and the front and rear side walls of the lower mold 11.

[0070] (4) Place the sample to be melted with the same material composition as the casting into the material melting area, and move the movable end anvil 2 so that the movable end anvil 2 and the fixed end anvil 3 are in good contact with the sample to be melted. Connect the thermocouples located on the upper mold 12 and the lower mold 11 respectively to control and monitor the temperature change of the melting mold 1 and the internal molten liquid. After the upper mold 12 and the lower mold 11 are assembled tightly, close the experimental cabin door of the thermal simulation test machine.

[0071] (5) Start the heating program of the thermal simulation test machine, keep the movable end anvil head 2 and the fixed end anvil head 3 in place, raise the temperature in the accommodating chamber 111 to a certain temperature, and keep it warm for a certain period of time to ensure that the metal in the accommodating chamber 111 is completely melted. Turn off the heating program, and adjust the temperature in the accommodating chamber 111 through the cooling device until the molten metal in the accommodating chamber 111 reaches a suitable casting temperature. During this period, according to the process requirements, the temperature of the casting mold 4 is adjusted through the insulation device.

[0072] (6) The movable end anvil 2 is moved to compress the molten metal solution. During the movement of the movable end anvil 2, the pressure or speed of the movable end anvil 2 is controlled to extrude the molten metal through the movable end anvil 2, or the molten metal is injected into the cavity 41 of the casting mold 4 through the guide groove 31 of the fixed end anvil 3.

[0073] (7) Keep the movable end anvil 2 and the fixed end anvil 3 in position and wait for the casting to cool down, open the experimental cabin door, and take out the casting.

[0074] (8) Test the mechanical properties of the casting.

[0075] (9) According to the test results, the process parameters involved in step (5) and step (6), such as the casting temperature, the temperature of the casting mold 4, the pressure or speed of the movable end anvil 2, etc., are adjusted, and steps (4) to (8) are repeated until the performance of the formed casting meets the set requirements, thereby determining the final corresponding casting process parameters.

[0076] The sample mentioned in the above step (4) only needs to ensure that its material composition is the same as the material composition of the final casting, and its structural form and formation method are not limited. In this way, the recycling of metal materials can be achieved, which can reduce the test cost.

[0077] The casting simulation method includes heating and melting, heat preservation, extrusion filling, cooling and other stages. The method can effectively reduce the material cost of materials in large-scale integrated die-casting trial production experiments and improve the efficiency of material research and development.

[0078] Example 4

[0079] The casting preparation method using a thermal simulation test machine of the present invention specifically comprises the following steps:

[0080] (1) Spray an appropriate amount of anti-sticking mold solvent onto the parts of the melting mold 1, the movable end anvil 2, the fixed end anvil 3 and the casting mold 4 that are in contact with the molten metal.

[0081] (2) Connect the fixing device 5 in the thermal simulation test machine, connect the melting mold 1 and the fixed end anvil 3 to the fixing device 5, connect the melting mold 1 and the fixed end anvil 3, fix the casting mold 4 to the fixed end anvil 3, connect the fixed end anvil 3 to the fixed end 600 of the thermal simulation test machine, and connect the movable end anvil 2 to the movable end 700 of the thermal simulation test machine.

[0082] (3) Through the displacement control of the thermal simulation test machine, the movable end anvil head 2 is moved to the set position of the accommodating cavity 111 of the melting mold 1, so that a material melting zone is formed between the movable end anvil head 2, the fixed end anvil head 3 and the two side walls of the lower mold 11.

[0083] (4) Place the sample to be melted with the same material composition as the casting into the material melting area, and move the movable end anvil 2 so that the movable end anvil 2 and the fixed end anvil 3 are in good contact with the sample to be melted. Connect the thermocouples located on the upper mold 12 and the lower mold 11 respectively to control and monitor the temperature change of the melting mold 1 and the internal molten liquid. After the upper mold 12 and the lower mold 11 are assembled tightly, close the experimental cabin door of the thermal simulation test machine.

[0084] (5) Start the heating program of the thermal simulation test machine, keep the movable end anvil head 2 and the fixed end anvil head 3 in place, raise the temperature in the accommodating chamber 111 to a certain temperature, and keep it warm for a certain period of time to ensure that the metal in the accommodating chamber 111 is completely melted. Turn off the heating program, and adjust the temperature in the accommodating chamber 111 through the cooling device according to different casting test requirements until the molten metal in the accommodating chamber 111 reaches a suitable casting temperature. During this period, adjust the temperature of the casting mold 4 through the insulation device according to the process requirements.

[0085] (6) The movable end anvil 2 is moved to compress the molten metal solution. According to different casting test requirements, the pressure or speed of the movable end anvil 2 is controlled during the movement of the movable end anvil 2, and the molten metal is squeezed through the movable end anvil 2, or the molten metal is injected into the cavity 41 of the casting mold 4 through the guide groove 31 of the fixed end anvil 3.

[0086] (7) Keep the movable end anvil 2 and the fixed end anvil 3 in position and wait for the casting to cool down, open the experimental cabin door, and take out the casting.

[0087] In this way, the preparation of the casting is completed. As in Example 3, the sample mentioned in step (4) only needs to ensure that its material composition is the same as the material composition of the final casting, and its structural form and formation method are not limited. In this way, the recycling and reuse of metal materials can be achieved, which can reduce the preparation cost of the casting.

[0088] The following specifically describes the preparation methods of several experimental types of aluminum alloy castings.

[0089] Experiment type 1: Aluminum alloy casting experiment

[0090] This experiment uses the casting device in Example 2, and specifically includes the following steps:

[0091] (1) Spray an appropriate amount of anti-sticking mold solvent on the parts of the melting mold 1, the movable end anvil 2 and the fixed end anvil 3 that are in contact with the melt.

[0092] (2) Connect the fixing device 5 in the thermal simulation test machine, connect the melting mold 1 and the fixed end anvil 3 to the fixing device 5, connect the melting mold 1 and the fixed end anvil 3, fix the casting mold 4 to the fixed end anvil 3, connect the fixed end anvil 3 to the fixed end 600 of the thermal simulation test machine, and connect the movable end anvil 2 to the movable end 700 of the thermal simulation test machine.

[0093] (3) Through the displacement control of the thermal simulation test machine, the movable end anvil head 2 is moved to the set position of the accommodating cavity 111 of the melting mold 1, so that a material melting zone is formed between the movable end anvil head 2, the fixed end anvil head 3 and the two side walls of the lower mold 11.

[0094] (4) Place the sample to be melted, such as alloy raw materials and intermediate alloys, into the lower mold 12, and move the movable end anvil 2 so that the movable end anvil 2 and the fixed end anvil 3 are in good contact with the sample to be melted. Connect the thermocouples located on the upper mold 12 and the lower mold 11 respectively to control and monitor the temperature change of the molten liquid inside the accommodating cavity 111. Assemble the upper mold 12 and the lower mold 11 tightly, and lay asbestos at the bottom of the experimental chamber to prevent the molten aluminum from contaminating the experimental chamber. Close the experimental chamber door of the thermal simulation test machine, and introduce nitrogen or argon into the experimental chamber as a smelting protection gas.

[0095] (5) Start the thermal simulation test machine test program. First, start the heating program, keep the movable end anvil 2 and the fixed end anvil 3 in place, and start heating at a heating rate of 1°C / s. After the temperature of the melting mold 1 is raised to 750°C, keep it warm for at least half an hour to ensure that the metal in the melting mold 1 is completely melted. When the temperature reaches 750°C, the movable end anvil 2 is changed from displacement control to stress control, and the movable end anvil 2 is moved at a constant pressure of 10MPa until aluminum liquid is observed to overflow from the vent hole on the upper mold 12. At this time, the movable end anvil 2 is stopped from moving until the insulation time is reached.

[0096] (6) After the sample in the melting mold 1 is completely melted, the heating program is first turned off, and the air blowing in the experimental chamber is turned on to preliminarily cool the melting mold 1 and the molten liquid. When the temperature of the molten liquid drops to the range of 690°C to 710°C, the cooling device is turned on for rapid cooling. When the temperature inside the melting mold 1 and the casting drops to room temperature, the cooling device is turned off, the movable end anvil head 2 is retracted, the melting mold 1 is disassembled to take out the casting, and the residual aluminum slag in the mold and the experimental chamber is cleaned to prepare for the next experiment.

[0097] Experiment type 2: Aluminum alloy die casting experiment

[0098] The experiment uses the casting device in Example 1, which specifically includes the following steps:

[0099] (1) Spray an appropriate amount of anti-sticking mold solvent onto the parts of the melting mold 1, the movable end anvil 2, the fixed end anvil 3 and the casting mold 4 that are in contact with the molten metal.

[0100] (2) Connect the fixing device 5 in the thermal simulation test machine, connect the melting mold 1 and the fixed end anvil 3 to the fixing device 5, connect the melting mold 1 and the fixed end anvil 3, fix the casting mold 4 to the fixed end anvil 3, connect the fixed end anvil 3 to the fixed end 600 of the thermal simulation test machine, and connect the movable end anvil 2 to the movable end 700 of the thermal simulation test machine.

[0101] (3) Through the displacement control of the thermal simulation test machine, the movable end anvil head 2 is moved to the set position of the accommodating cavity 111 of the melting mold 1, so that a material melting zone is formed between the movable end anvil head 2, the fixed end anvil head 3 and the two side walls of the lower mold 11.

[0102] (4) Place the sample to be melted, such as alloy raw materials and intermediate alloys, into the lower mold 12, and move the movable end anvil 2 so that the movable end anvil 2 and the fixed end anvil 3 are in good contact with the sample to be melted. Connect the thermocouples located on the upper mold 12 and the lower mold 11 respectively to control and monitor the temperature change of the molten liquid inside the accommodating cavity 111. Assemble the upper mold 12 and the lower mold 11 tightly, and lay asbestos at the bottom of the experimental chamber to prevent the molten aluminum from contaminating the experimental chamber. Close the experimental chamber door of the thermal simulation test machine, and introduce nitrogen or argon into the experimental chamber as a smelting protection gas.

[0103] (5) Start the test program of the thermal simulation test machine. First, start the heating program, keep the movable end anvil head 2 and the fixed end anvil head 3 in place, and start heating at a heating rate of 1°C / s. After the temperature of the melting mold 1 is raised to 750°C, keep it warm for at least half an hour to ensure that the metal in the melting mold 1 is completely melted. Turn on the temperature control of the casting mold 4 to stabilize the temperature of the casting mold 4 at 200-230°C.

[0104] (6) After the sample in the melting mold 1 is completely melted, first turn off the heating program, start blowing air into the experimental chamber, and preliminarily cool the melting mold 1 and the molten liquid. At the same time, the movable end anvil 2 starts to slowly compress using stress control. When the stress is observed to increase rapidly to 15 MPa, the displacement of the movable end anvil 2 is stopped. When the temperature of the molten liquid drops to the range of 690°C to 710°C, the movable end anvil 2 switches to displacement control and compresses at a set speed of 1 cm / s. After reaching the limit, air blowing is performed in the experimental chamber for cooling. Turn off the temperature control of the casting mold 4, use tools to remove the casting mold 4 and take out the casting. Clean the residual aluminum slag in the mold and the experimental chamber to prepare for the next experiment.

[0105] Experiment type three: Aluminum alloy low pressure casting experiment

[0106] The experiment uses the casting device in Example 1, which specifically includes the following steps:

[0107] (1) Spray an appropriate amount of anti-sticking mold solvent onto the parts of the melting mold 1, the movable end anvil 2, the fixed end anvil 3 and the casting mold 4 that are in contact with the molten metal.

[0108] (2) Connect the fixing device 5 in the thermal simulation test machine, connect the melting mold 1 and the fixed end anvil 3 to the fixing device 5, connect the melting mold 1 and the fixed end anvil 3, fix the casting mold 4 to the fixed end anvil 3, connect the fixed end anvil 3 to the fixed end 600 of the thermal simulation test machine, and connect the movable end anvil 2 to the movable end 700 of the thermal simulation test machine.

[0109] (3) Through the displacement control of the thermal simulation test machine, the movable end anvil head 2 is moved to the set position of the accommodating cavity 111 of the melting mold 1, so that a material melting zone is formed between the movable end anvil head 2, the fixed end anvil head 3 and the two side walls of the lower mold 11.

[0110] (4) Place the sample to be melted, such as alloy raw materials and intermediate alloys, into the lower mold 12, and move the movable end anvil 2 so that the movable end anvil 2 and the fixed end anvil 3 are in good contact with the sample to be melted. Connect the thermocouples located on the upper mold 12 and the lower mold 11 respectively to control and monitor the temperature change of the molten liquid inside the accommodating cavity 111. Assemble the upper mold 12 and the lower mold 11 tightly, and lay asbestos at the bottom of the experimental chamber to prevent the molten aluminum from contaminating the experimental chamber. Close the experimental chamber door of the thermal simulation test machine, and introduce nitrogen or argon into the experimental chamber as a smelting protection gas.

[0111] (5) Start the test program of the thermal simulation test machine. First, start the heating program, keep the movable end anvil head 2 and the fixed end anvil head 3 in place, and start heating at a heating rate of 1°C / s. After the temperature of the melting mold 1 is raised to 750°C, keep it warm for at least half an hour to ensure that the metal in the melting mold 1 is completely melted. Turn on the temperature control of the casting mold 4 to stabilize the temperature of the casting mold 4 at 250-300°C.

[0112] (6) After the sample in the melting mold 1 is completely melted, first turn off the heating program, start blowing air into the experimental chamber, and preliminarily cool the melting mold 1 and the molten liquid. At the same time, the movable end anvil 2 starts to slowly compress using stress control. When the stress value reaches 0.3MPa, stop the displacement of the movable end anvil 2. When the temperature of the molten liquid drops to the range of 690°C to 710°C, the movable end anvil 2 switches to displacement control and compresses at a set speed of 0.2cm / s. After reaching the limit, blow air to cool the experimental chamber. Turn off the temperature control of the casting mold 4, use tools to remove the casting mold 4, and take out the casting. Clean the residual aluminum slag in the mold and the experimental chamber to prepare for the next experiment.

[0113] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A casting device using a thermal simulation test machine, the thermal simulation test machine having a fixed end and a movable end, characterized in that: The casting device includes a melting mold with a accommodating cavity, a movable end anvil for fixedly connected to the movable end, and a fixed end anvil for fixedly connected to the fixed end. The accommodating cavity passes through one end of the melting mold to form a first opening. One end of the movable end anvil extends into the accommodating cavity from the first opening and can be slidably arranged along the extension direction of the accommodating cavity. The fixed end anvil is fixedly arranged at the other end of the melting mold opposite to the one end.

2. The casting device using the thermal simulation test machine according to claim 1, characterized in that: The accommodating cavity penetrates the other end of the smelting mold to form a second opening, and one end of the fixed-end anvil extends into the accommodating cavity from the second opening.

3. The casting device using the thermal simulation test machine according to claim 1 or 2, characterized in that: The casting device also includes a casting mold arranged on the fixed end anvil head, a cavity matching the casting is arranged inside the casting mold, a guide groove is arranged inside the fixed end anvil head, one end of the guide groove is connected to the accommodating cavity, and the other end of the guide groove is connected to the cavity.

4. The casting device using the thermal simulation test machine according to claim 3, characterized in that: The casting mold is also provided with a vent hole for connecting the mold cavity with the outside and a filter screen arranged at the vent hole.

5. The casting device using the thermal simulation test machine according to claim 4, characterized in that: The casting mold is arranged above the fixed end anvil, and the vent hole is located above the mold cavity and passes through the upper end surface of the casting mold.

6. The casting device using the thermal simulation test machine according to claim 3, characterized in that: The casting device further comprises a heat preservation device arranged on the casting mold for maintaining the casting mold at a set temperature.

7. The casting device using the thermal simulation test machine according to claim 1, characterized in that: The casting device also includes a cooling device arranged on the melting mold for cooling; The accommodating chamber extends in the left-right direction, and the temperature-reducing devices are respectively arranged on the smelting molds located at the upper part and the lower part of the accommodating chamber.

8. The casting device using the thermal simulation test machine according to claim 1, characterized in that: The casting device further comprises a temperature sensor disposed on the melting mold for testing the temperature in the accommodating cavity.

9. The casting device using the thermal simulation test machine according to claim 1, characterized in that: The smelting mold includes a lower mold and an upper mold arranged above the lower mold, the top of the lower mold is provided with an opening, and the upper mold is arranged at the position of the opening; a positioning structure is arranged between the upper mold and the lower mold, the positioning structure includes a convex portion arranged on one of the upper mold and the lower mold and a concave portion arranged on the other, the convex portion is clamped in the concave portion; the positioning structures are respectively arranged on opposite sides of the opening.

10. The casting device using the thermal simulation test machine according to claim 1, characterized in that: The melting mold is also provided with a vent hole for connecting the accommodating cavity with the outside and a filter screen arranged at the vent hole. The vent hole is arranged above the accommodating cavity and passes through the upper end surface of the melting mold.

11. A casting simulation method using a thermal simulation test machine, characterized in that: A casting simulation is performed using the casting device according to any one of claims 1 to 10, wherein the simulation method comprises: (1) Connect the casting device to the thermal simulation test machine; (2) by means of displacement control of the thermal simulation test machine, the movable end anvil is moved to a set position of the accommodating chamber, so that a material melting zone is formed in the accommodating chamber; (3) placing a sample to be melted having the same material composition as the casting into the material melting zone; (4) starting a heating program of the thermal simulation test machine, raising the temperature in the accommodating cavity to a preset temperature, maintaining the temperature for a preset time to ensure that the metal in the accommodating cavity is completely melted, and then closing the heating program; (5) moving the movable end anvil to compress the molten metal solution, controlling the pressure or speed of the movable end anvil during the movement of the movable end anvil, and controlling the temperature in the material melting zone to cool and form a casting; (6) Testing the mechanical properties of the casting formed in step (5), and adjusting the process parameters in steps (4) and (5) according to the test results until the mechanical properties of the formed casting meet the set requirements.

12. A method for preparing castings using a thermal simulation test machine, characterized in that: A casting is prepared by using a casting device as claimed in any one of claims 1 to 10, the preparation method comprising: (1) Connect the casting device to the thermal simulation test machine; (2) by means of displacement control of the thermal simulation test machine, the movable end anvil is moved to a set position of the accommodating cavity of the melting mold, so that a material melting zone is formed in the accommodating cavity of the melting mold; (3) placing a sample to be melted having the same material composition as the casting into the material melting zone; (4) starting a heating program of the thermal simulation test machine, raising the temperature in the accommodating cavity to a preset temperature, maintaining the temperature for a preset time to ensure that the metal in the accommodating cavity is completely melted, and then closing the heating program; (5) The movable end anvil is moved to compress the molten metal solution. During the movement of the movable end anvil, the pressure or speed of the movable end anvil is controlled according to different casting test requirements, and the temperature in the material melting zone is controlled to cool and form a casting.

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