Anti-gravity casting equipment applying electromagnetic pump

Abstract

The invention relates to the technical field of casting equipment, in particular to anti-gravity casting equipment applying an electromagnetic pump, which comprises a machine body, and a heat preservation furnace, a vacuum pump, a first heat preservation chamber and a second heat preservation chamber which are arranged on the machine body. A first mold and a second mold are arranged on the machine body, the first heat preservation chamber is communicated with the first mold, and the second heat preservation chamber is communicated with the second mold. According to the anti-gravity casting equipment applying the electromagnetic pump, the first heat preservation chamber and the second heat preservation chamber are arranged to be matched with the heat preservation furnace, and negative pressure environments are created in the heat preservation furnace, the first heat preservation chamber, the second heat preservation chamber, the first mold and the second mold, so that gas in the first mold and the second mold can be avoided; and by means of suction force of negative pressure in the heat preservation furnace, a cavity of the first mold and a cavity of the second mold can be filled with molten metal more smoothly, air holes are reduced, and the quality of formed castings is improved.

Description

Technical Field

[0001] The invention relates to the technical field of casting equipment, and in particular to a counter-gravity casting equipment using an electromagnetic pump. Background Art

[0002] As an advanced casting process, counter-gravity casting is of great significance for the production of high-quality and high-performance castings. Electromagnetic drive pumps play a key role in the counter-gravity casting process. Electromagnetic drive pumps can be divided into DC electromagnetic pumps and AC electromagnetic pumps. DC electromagnetic pumps have higher driving efficiency than AC electromagnetic pumps, and they show unique advantages in the counter-gravity casting of large aluminum alloy castings.

[0003] In the process of counter-gravity casting, the existing DC electromagnetic pump sets DC electrodes and electromagnets in the riser tube. The electromagnets work to generate an electromagnetic field acting between the electrodes. When a DC current passes between the electrodes and the molten metal (aluminum liquid), the aluminum liquid generates an upward Ampere force. The aluminum liquid in the holding furnace flows upward under the driving force of the electromagnetic pump, is injected into the mold through the riser tube to fill the mold cavity, and finally solidifies.

[0004] However, during the casting process, due to the presence of gas in the mold, crystallization under pressure causes gas to remain in the metal in the form of non-pores, which is extremely harmful to castings working in high-temperature environments, seriously affecting their dimensional stability and strength, reducing the service life and reliability of castings, and may cause deformation, rupture and other failures of castings during use. In addition, due to the large back pressure of gas in the mold, the filling capacity of liquid metal is affected. At the same time, the oxide film formed on the surface of aluminum liquid will not only be brought into the mold, but also the surface tension of aluminum liquid is greatly increased due to its presence, which affects the filling of thin-walled parts of the casting, resulting in quality problems such as lack of material and incompleteness in the thin-walled parts, which seriously affects the quality and performance of the casting. Summary of the invention

[0005] The invention provides a counter-gravity casting device using an electromagnetic pump to solve the problem that in the casting process of the existing casting device, the quality and performance of the casting are adversely affected by the presence of gas in the mold.

[0006] The present invention adopts the following technical scheme: an anti-gravity casting device using an electromagnetic pump, comprising a machine body and an insulation furnace, a vacuum pump, a first insulation chamber and a second insulation chamber installed on the machine body, the first insulation chamber is connected to the insulation furnace through a first connecting pipe, the second insulation chamber is connected to the insulation furnace through a second connecting pipe, a first electromagnetic pump is arranged on the first connecting pipe, and a second electromagnetic pump is arranged on the second connecting pipe; a first mold and a second mold are arranged on the machine body, the first insulation chamber is connected to the first mold, and the second insulation chamber is connected to the second mold; the insulation furnace is filled with molten metal; a vacuum pump is installed on the machine body, and the vacuum pump is used to evacuate the insulation furnace, the first insulation chamber, the second insulation chamber, the first mold and the second mold; the casting of the anti-gravity casting device using the electromagnetic pump has a circulation arrangement The first stage, the second stage, the third stage and the fourth stage; in the first stage, the first electromagnetic pump is started to inject the molten metal in the first insulation chamber into the first mold, and the second electromagnetic pump is turned off to allow the molten metal to flow back from the second insulation chamber to the insulation furnace; in the second stage, the insulation furnace, the second insulation chamber and the second mold are all in a vacuum state; the first electromagnetic pump is started to restrict the molten metal from flowing back from the first insulation chamber to the insulation furnace, and the second electromagnetic pump is turned off; in the third stage, the second electromagnetic pump is started to inject the molten metal in the second insulation chamber into the second mold, and the first electromagnetic pump is turned off to allow the molten metal to flow back from the first insulation chamber to the insulation furnace; in the fourth stage, the insulation furnace, the first insulation chamber and the first mold are all in a vacuum state; the second electromagnetic pump is started to restrict the molten metal from flowing back from the second insulation chamber to the insulation furnace, and the first electromagnetic pump is turned off.

[0007] Furthermore, a plurality of first heaters are arranged in the insulation furnace.

[0008] Furthermore, a plurality of second heaters are provided in each of the first insulation chamber and the second insulation chamber.

[0009] Furthermore, the first heater and the second heater are both immersion heaters.

[0010] Furthermore, an air inlet is provided on the first connecting pipe and the second connecting pipe, and an air pump is provided on the machine body, which can ventilate the first connecting pipe or the second connecting pipe, and the gas flows toward one side of the insulation furnace in the first connecting pipe and the second connecting pipe.

[0011] Furthermore, the gas in the air pump is argon or nitrogen.

[0012] Furthermore, a first liquid outlet is provided on the first insulation chamber, and the first liquid outlet is communicated with the cavity of the first mold; a second liquid outlet is provided on the second insulation chamber, and the second liquid outlet is communicated with the cavity of the second mold.

[0013] Furthermore, the first liquid outlet is a conical structure, and in the vertical direction, the upper end of the first liquid outlet is larger than the lower end, and the structure of the second liquid outlet is the same as that of the first liquid outlet.

[0014] Furthermore, the first electromagnetic pump and the second electromagnetic pump are both DC electromagnetic pumps, and the first electromagnetic pump and the second electromagnetic pump are both coated with a thermal insulation layer.

[0015] Furthermore, the volume of the first insulation chamber is smaller than that of the insulation furnace, and the inner wall thickness of the first insulation chamber is greater than that of the insulation furnace; the volume of the second insulation chamber is equal to that of the first insulation chamber, and the inner wall thickness of the second insulation chamber is equal to that of the first insulation chamber.

[0016] The beneficial effects of the present invention are as follows: an anti-gravity casting device using an electromagnetic pump of the present invention cooperates with an insulation furnace by setting a first insulation chamber and a second insulation chamber, and creates a negative pressure environment in the insulation furnace, the first insulation chamber, the second insulation chamber, the first mold and the second mold. When anti-gravity casting is performed on the first mold connected to the first insulation chamber and the second mold connected to the second insulation chamber, gas can be avoided in the first mold and the second mold, thereby avoiding gas from remaining in the molded casting in the form of non-pores, and avoiding the formation of an oxide film on the surface of the molten metal, thereby further preventing the oxide film from being brought into the first mold and the second mold to affect the quality and performance of the casting. During the cooling of the first mold, the second mold starts casting, and during the cooling of the second mold, the first mold starts casting, which shortens the casting time and improves the casting efficiency. After the cooling of the first mold is completed, by turning off the first electromagnetic pump, the suction force of the negative pressure in the insulation furnace can be used to make the molten metal in the first insulation chamber flow back to increase the pressure of the insulation furnace. Similarly, after the cooling of the second mold is completed, by turning off the second electromagnetic pump, the suction force of the negative pressure in the insulation furnace can be used to make the molten metal in the second insulation chamber flow back to increase the pressure of the insulation furnace, thereby allowing the molten metal to more smoothly fill the cavity of the first mold and the cavity of the second mold, reduce the formation of pores, and improve the quality of the casting after molding. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 A schematic diagram of the overall structure of an embodiment of a counter-gravity casting device using an electromagnetic pump according to the present invention; Figure 2A state diagram of a holding furnace performing liquid injection casting on a first mold according to an embodiment of a counter-gravity casting device using an electromagnetic pump of the present invention; Figure 3 This is a state diagram of a second mold being injected with liquid by a holding furnace during cooling of the molten metal in the first mold in an embodiment of a counter-gravity casting device using an electromagnetic pump according to the present invention; Figure 4 This is a state diagram of a first mold after cooling is completed in an embodiment of a counter-gravity casting device using an electromagnetic pump according to the present invention.

[0019] In the figure: 100, operating platform; 101, machine body; 110, first mold; 120, second mold; 200, insulation furnace; 300, first insulation chamber; 301, first liquid outlet; 310, first connecting pipe; 320, first electromagnetic pump; 400, second insulation chamber; 401, second liquid outlet; 410, second connecting pipe; 420, second electromagnetic pump; 500, molten metal; 600, first heater; 700, second heater. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not 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.

[0021] An embodiment of a counter-gravity casting device using an electromagnetic pump of the present invention is as follows: Figures 1 to 4 shown.

[0022] A counter-gravity casting device using an electromagnetic pump comprises an operating platform 100, a machine body 101, a holding furnace 200 installed on the machine body 101, a vacuum pump, a first holding chamber 300, and a second holding chamber 400. The first holding chamber 300 is connected to the holding furnace 200 through a first connecting pipe 310, and the second holding chamber 400 is connected to the holding furnace 200 through a second connecting pipe 410. A first electromagnetic pump 320 is provided on the first connecting pipe 310, and a second electromagnetic pump 420 is provided on the second connecting pipe 410. A first mold 110 and a second mold 120 are provided on the machine body 101, the first holding chamber 300 is connected to the first mold 110, and the second holding chamber 400 is connected to the second mold 120. A metal liquid 500 is filled in the holding furnace 200. The vacuum pump is used to evacuate the holding furnace 200, the first holding chamber 300, the second holding chamber 400, the first mold 110, and the second mold 120. The vacuum pump is not shown in the drawings of the specification.

[0023] The casting of the anti-gravity casting equipment using the electromagnetic pump has a first stage, a second stage, a third stage and a fourth stage of a cyclic setting; in the first stage, the first electromagnetic pump 320 is started to inject the molten metal 500 in the first insulation chamber 300 into the first mold 110, and the second electromagnetic pump 420 is turned off to allow the molten metal 500 to flow back from the second insulation chamber 400 to the insulation furnace 200; in the second stage, the insulation furnace 200, the second insulation chamber 400 and the second mold 120 are all in a vacuum state; the first electromagnetic pump 320 is started to limit the molten metal 500 from the first insulation chamber 300 to the first mold 110. In the third stage, the second electromagnetic pump 420 is started to inject the molten metal 500 in the second insulation chamber 400 into the second mold 120, and the first electromagnetic pump 320 is turned off to allow the molten metal 500 to flow back from the first insulation chamber 300 to the insulation furnace 200; in the fourth stage, the insulation furnace 200, the first insulation chamber 300 and the first mold 110 are all in a vacuum state; the second electromagnetic pump 420 is started to limit the molten metal 500 from the second insulation chamber 400 to flow back to the insulation furnace 200, and the first electromagnetic pump 320 is turned off.

[0024] Specifically, the first electromagnetic pump 320 and the second electromagnetic pump 420 are both direct current electromagnetic pumps. The first electromagnetic pump 320 and the second electromagnetic pump 420 are both coated with a heat preservation layer, and the metal liquid 500 is molten aluminum liquid.

[0025] In this embodiment, a heat preservation furnace 200, a vacuum pump, a first heat preservation chamber 300 and a second heat preservation chamber 400 are provided. When in use, the temperature of the heat preservation furnace 200 is first heated to a set value, and then the heat preservation furnace 200, the first heat preservation chamber 300 and the second heat preservation chamber 400 are filled with molten metal 500, and the liquid level of the molten metal 500 in the first heat preservation chamber 300 and the second heat preservation chamber 400 is maintained at a suitable height. Figure 2 As shown, the first insulation chamber 300 is located on the left side of the insulation furnace 200 , and the second insulation chamber 400 is located on the right side of the insulation furnace 200 .

[0026] Then, the first mold 110 connected to the first insulation chamber 300 is subjected to counter-gravity casting. At this time, the casting of the counter-gravity casting equipment using the electromagnetic pump is in the first stage. The first electromagnetic pump 320 is started, and the first electromagnetic pump 320 is used to inject the molten metal 500 in the first insulation chamber 300 into the first mold 110, and the first electromagnetic pump 320 is kept in operation, so that the molten metal 500 is solidified and formed under pressure, and the casting in the first mold 110 is cooled. At this time, the second electromagnetic pump 420 is turned off. See the attached Figure 2 shown.

[0027] While waiting for the casting in the first mold 110 to cool down, the casting of the anti-gravity casting equipment using an electromagnetic pump enters the second stage, and the vacuum pump is used to evacuate the insulation furnace 200, the second insulation chamber 400 and the second mold 120 to extract the gas in the molten metal 500. Although the insulation furnace 200 is in a vacuum state, the first electromagnetic pump 320 remains running (the first electromagnetic pump 320 causes the molten metal 500 in the insulation furnace 200 to flow to the first insulation chamber 300 to maintain pressure), and therefore the molten metal 500 in the first insulation chamber 300 will not flow back into the insulation furnace 200.

[0028] Then, the second mold 120 connected to the second insulation chamber 400 is subjected to counter-gravity casting. The casting of the counter-gravity casting equipment using the electromagnetic pump reaches the third stage. The second electromagnetic pump 420 is started, and the molten metal 500 in the second insulation chamber 400 is injected into the second mold 120 by the second electromagnetic pump 420. The second electromagnetic pump 420 is kept in operation. During the counter-gravity casting of the second mold 120 connected to the second insulation chamber 400, the insulation furnace 200, the second insulation chamber 400 and the second mold 120 are all in a vacuum state. This setting can avoid the existence of gas in the second mold 120, and thus avoid the gas remaining in the molded casting in the form of non-pores, and can also avoid the formation of an oxide film on the surface of the molten metal 500, which affects the quality and performance of the casting. See the attached Figure 3 shown.

[0029] After the second mold 120 is filled with the molten metal 500, the second electromagnetic pump 420 is kept running to allow the molten metal 500 to solidify under pressure and wait for the casting in the second mold 120 to cool. At the same time, the casting in the first mold 110 has cooled and no longer needs to be pressure maintained. At this time, the first mold 110 is removed and the first electromagnetic pump 320 is turned off. Under the action of the negative pressure in the insulation furnace 200, the molten metal 500 in the first insulation chamber 300 will quickly flow back into the insulation furnace 200, increasing the pressure in the insulation furnace 200. Under the action of pressure, the molten metal 500 can more smoothly fill the cavity of the second mold 120, reduce the formation of pores, and improve the quality of the casting after molding. See Attachment Figure 4 shown.

[0030] While waiting for the casting in the second mold 120 to cool, the casting of the anti-gravity casting equipment using the electromagnetic pump reaches the fourth stage, so that the first mold 110 is connected to the first insulation chamber 300 again. The insulation furnace 200, the first insulation chamber 300 and the first mold 110 are evacuated by the vacuum pump to extract the gas in the molten metal 500. Although the insulation furnace 200 is in a vacuum state, the second electromagnetic pump 420 keeps running (the second electromagnetic pump 420 makes the molten metal 500 in the insulation furnace 200 flow to the second insulation chamber 400 to maintain pressure), so the molten metal 500 in the second insulation chamber 400 will not flow back into the insulation furnace 200.

[0031] After the fourth stage, the casting of the anti-gravity casting equipment using the electromagnetic pump will return to the first stage, the first electromagnetic pump 320 is started, and the first electromagnetic pump 320 is used to inject the molten metal 500 in the first insulation chamber 300 into the first mold 110, and the second electromagnetic pump 420 is closed to allow the molten metal 500 to flow back from the second insulation chamber 400 to the insulation furnace 200. Similarly, since the insulation furnace 200, the first insulation chamber 300 and the first mold 110 are all in a vacuum state, this setting can avoid the presence of gas in the first mold 110, and then avoid the gas remaining in the molded casting in the form of non-pores, and can also avoid the formation of an oxide film on the surface of the molten metal 500, affecting the quality and performance of the casting. And the pressure in the insulation furnace 200 increases, and under the action of pressure, the molten metal 500 can more smoothly fill the cavity of the first mold 110, reduce the formation of pores, and improve the quality of the casting after molding. Then, the casting can be continued according to the above process cycle operation.

[0032] That is, in this embodiment, by arranging the first insulation chamber 300 and the second insulation chamber 400 in cooperation with the insulation furnace 200, a negative pressure environment is created in the insulation furnace 200, the first insulation chamber 300, the second insulation chamber 400, the first mold 110 and the second mold 120. When the first mold 110 connected to the first insulation chamber 300 and the second mold 120 connected to the second insulation chamber 400 are subjected to counter-gravity casting, the presence of gas in the first mold 110 and the second mold 120 can be avoided, thereby avoiding the gas from remaining in the molded casting in the form of non-pores, and avoiding the formation of an oxide film on the surface of the molten metal 500, thereby further preventing the oxide film from being brought into the first mold 110 and the second mold 120 to affect the quality and performance of the casting.

[0033] During the cooling of the first mold 110, the second mold 120 starts casting, and during the cooling of the second mold 120, the first mold 110 starts casting, which shortens the casting time and improves the casting efficiency. After the cooling of the first mold 110 is completed, by turning off the first electromagnetic pump 320, the suction force of the negative pressure in the insulation furnace 200 can be used to make the molten metal 500 in the first insulation chamber 300 flow back to increase the pressure of the insulation furnace 200. Similarly, after the cooling of the second mold 120 is completed, by turning off the second electromagnetic pump 420, the suction force of the negative pressure in the insulation furnace 200 can be used to make the molten metal 500 in the second insulation chamber 400 flow back to increase the pressure of the insulation furnace 200, thereby allowing the molten metal 500 to more smoothly fill the cavity of the first mold 110 and the cavity of the second mold 120, thereby reducing the formation of pores and improving the quality of the casting after molding.

[0034] In this embodiment, a plurality of first heaters 600 are disposed in the holding furnace 200. The plurality of first heaters 600 can maintain the temperature of the molten metal 500 in the holding furnace 200, thereby ensuring a high heating efficiency.

[0035] A plurality of second heaters 700 are disposed in both the first insulation chamber 300 and the second insulation chamber 400. The plurality of second heaters 700 can also maintain the temperature of the molten metal 500 in the first insulation chamber 300 and the second insulation chamber 400, thereby ensuring a high heating efficiency.

[0036] Furthermore, both the first heater 600 and the second heater 700 are immersion heaters.

[0037] In this embodiment, an air inlet is provided on the first connecting pipe 310 and the second connecting pipe 410, and an air pump is provided on the machine body 101, and the air pump can ventilate the first connecting pipe 310 or the second connecting pipe 410, and the gas flows toward the side of the insulation furnace 200 in the first connecting pipe 310 and the second connecting pipe 410. The air pump is not shown in the drawings of the specification.

[0038] Specifically, the gas in the air pump is an inert gas, specifically argon or nitrogen, which can prevent the aluminum liquid from being oxidized and ensure the stability of the aluminum liquid.

[0039] The air inlet can be opened or closed. When air intake is needed, the air inlet is opened so that the air pump can transport the gas. When air intake is not needed, the air inlet is closed to avoid affecting the transportation of the molten metal 500.

[0040] In this embodiment, an air inlet is provided on the first connecting pipe 310 and the second connecting pipe 410. The first connecting pipe 310 is used as an example for explanation. After the first mold 110 is cooled, the first electromagnetic pump 320 is turned off, and the suction force of the negative pressure in the insulation furnace 200 can be used to make the molten metal 500 in the first insulation chamber 300 flow back into the insulation furnace 200 through the first connecting pipe 310. At this time, the first connecting pipe 310 is ventilated by the air pump, and the gas flows toward one side of the insulation furnace 200, so that the force of the reflux of the molten metal 500 and the impact force of the gas act together on the inner wall of the first connecting pipe 310. This setting is because when the first connecting pipe 310 transports the molten metal 500, although the first electromagnetic pump 320 is coated with an insulation layer, due to the limited insulation effect, the molten metal 500 may still solidify and slag on the inner wall of the first connecting pipe 310. Therefore, the impact force of the reflux of the molten metal 500 and the force of the gas act together on the inner wall of the first connecting tube 310, so that the molten metal 500 solidified and drossing on the inner wall of the first connecting tube 310 can be removed, and the molten metal 500 solidified and drossing on the inner wall of the first connecting tube 310 can enter the insulation furnace 200 with the molten metal 500, and be heated and melted in the insulation furnace 200. The treatment method of the molten metal 500 solidified and drossing on the inner wall of the second connecting tube 410 is the same as the treatment method of the molten metal 500 solidified and drossing on the inner wall of the first connecting tube 310, and will not be repeated here.

[0041] After the solidified and slag-containing molten metal 500 on the first connecting tube 310 and the second connecting tube 410 is cleaned, it can also be prevented that when the molten metal 500 in the insulation furnace 200 is poured into the first mold 110, the molten metal 500 solidified and slag-containing on the first connecting tube 310 is brought into the first mold 110. Similarly, it can also be prevented that when the molten metal 500 in the insulation furnace 200 is poured into the second mold 120, the molten metal 500 solidified and slag-containing on the second connecting tube 410 is brought into the second mold 120, thereby further improving the quality of the casting.

[0042] In this embodiment, a first liquid outlet 301 is provided on the first insulation chamber 300, and the first liquid outlet 301 is connected to the cavity of the first mold 110, so that when the first electromagnetic pump 320 transports the molten metal 500 into the first insulation chamber 300 through the first connecting pipe 310, the molten metal 500 can enter the cavity of the first mold 110 from the first insulation chamber 300. A second liquid outlet 401 is provided on the second insulation chamber 400, and the second liquid outlet 401 is connected to the cavity of the second mold 120, so that when the second electromagnetic pump 420 transports the molten metal 500 into the second insulation chamber 400 through the second connecting pipe 410, the molten metal 500 can enter the cavity of the second mold 120 from the second insulation chamber 400.

[0043] Furthermore, the first liquid outlet 301 is a conical structure, and in the vertical direction, the upper end of the first liquid outlet 301 is larger than the lower end, and the structure of the second liquid outlet 401 is the same as that of the first liquid outlet 301 .

[0044] The first liquid outlet 301 and the second liquid outlet 401 are both configured as a tapered structure with a larger upper end and a smaller lower end, so as to facilitate the flow of the molten metal 500.

[0045] In this embodiment, the volume of the first insulation chamber 300 is smaller than that of the insulation furnace 200, and the inner wall thickness of the first insulation chamber 300 is greater than that of the insulation furnace 200. The volume of the second insulation chamber 400 is equal to that of the first insulation chamber 300, and the inner wall thickness of the second insulation chamber 400 is equal to that of the first insulation chamber 300.

[0046] By making the volume of the first insulation chamber 300 smaller than that of the insulation furnace 200 and the inner wall thickness of the first insulation chamber 300 greater than that of the insulation furnace 200, the insulation performance of the first insulation chamber 300 is better than that of the insulation furnace 200, making the molten metal 500 less likely to solidify.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An anti-gravity casting device using an electromagnetic pump, characterized in that: The invention comprises a machine body and a heat preservation furnace installed on the machine body, a vacuum pump, a first heat preservation chamber and a second heat preservation chamber, wherein the first heat preservation chamber is connected with the heat preservation furnace through a first connecting pipe, and the second heat preservation chamber is connected with the heat preservation furnace through a second connecting pipe, a first electromagnetic pump is arranged on the first connecting pipe, and a second electromagnetic pump is arranged on the second connecting pipe; a first mold and a second mold are arranged on the machine body, the first heat preservation chamber is connected with the first mold, and the second heat preservation chamber is connected with the second mold; the heat preservation furnace is filled with molten metal; a vacuum pump is installed on the machine body, and the vacuum pump is used to evacuate the heat preservation furnace, the first heat preservation chamber, the second heat preservation chamber, the first mold and the second mold; The casting of the anti-gravity casting equipment using an electromagnetic pump has a first stage, a second stage, a third stage and a fourth stage of a cyclic setting; in the first stage, the first electromagnetic pump is started to inject the molten metal in the first insulation chamber into the first mold, and the second electromagnetic pump is turned off to allow the molten metal to flow back from the second insulation chamber to the insulation furnace; in the second stage, the insulation furnace, the second insulation chamber and the second mold are all in a vacuum state; the first electromagnetic pump is started to restrict the molten metal from flowing back from the first insulation chamber to the insulation furnace, and the second electromagnetic pump is turned off; in the third stage, the second electromagnetic pump is started to inject the molten metal in the second insulation chamber into the second mold, and the first electromagnetic pump is turned off to allow the molten metal to flow back from the first insulation chamber to the insulation furnace; in the fourth stage, the insulation furnace, the first insulation chamber and the first mold are all in a vacuum state; the second electromagnetic pump is started to restrict the molten metal from flowing back from the second insulation chamber to the insulation furnace, and the first electromagnetic pump is turned off.

2. The anti-gravity casting equipment using an electromagnetic pump according to claim 1, characterized in that: A plurality of first heaters are arranged in the heat preservation furnace.

3. The anti-gravity casting equipment using an electromagnetic pump according to claim 2, characterized in that: A plurality of second heaters are arranged in the first insulation chamber and the second insulation chamber.

4. The anti-gravity casting equipment using an electromagnetic pump according to claim 3, characterized in that: The first heater and the second heater are both immersion heaters.

5. The anti-gravity casting equipment using an electromagnetic pump according to claim 4, characterized in that: The first connecting pipe and the second connecting pipe are both provided with air inlets, and an air pump is arranged on the machine body, which can ventilate the first connecting pipe or the second connecting pipe, and the gas flows toward one side of the insulation furnace in the first connecting pipe and the second connecting pipe.

6. The anti-gravity casting equipment using an electromagnetic pump according to claim 5, characterized in that: The gas in the air pump is argon or nitrogen.

7. The anti-gravity casting equipment using an electromagnetic pump according to claim 1, characterized in that: The first insulation chamber is provided with a first liquid outlet, which is communicated with the cavity of the first mold; the second insulation chamber is provided with a second liquid outlet, which is communicated with the cavity of the second mold.

8. The anti-gravity casting equipment using an electromagnetic pump according to claim 7, characterized in that: The first liquid outlet is a conical structure, and in the vertical direction, the upper end of the first liquid outlet is larger than the lower end, and the structure of the second liquid outlet is the same as that of the first liquid outlet.

9. The anti-gravity casting equipment using an electromagnetic pump according to claim 1, characterized in that: The first electromagnetic pump and the second electromagnetic pump are both DC electromagnetic pumps, and the first electromagnetic pump and the second electromagnetic pump are both coated with a thermal insulation layer.

10. The anti-gravity casting equipment using an electromagnetic pump according to claim 1, characterized in that: The volume of the first insulation chamber is smaller than that of the insulation furnace, and the inner wall thickness of the first insulation chamber is greater than that of the insulation furnace; the volume of the second insulation chamber is equal to that of the first insulation chamber, and the inner wall thickness of the second insulation chamber is equal to that of the first insulation chamber.

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