Vacuum cold crucible suspension smelting and suction casting device

Abstract

The utility model relates to the technical field of metal smelting, in particular to a vacuum cold crucible suspension smelting and suction casting device, which not only can be used for charging in the heating and smelting process and conveniently and dynamically researching the influence of added elements on the melt property, but also can be used for accelerating the cooling of materials by using cooling water after the materials enter a mold, so that the production efficiency is improved. The working efficiency is improved; comprising a sealing mechanism; the device further comprises a heating mechanism, a suction casting mechanism, an exhaust mechanism, a material pushing mechanism and a cooling mechanism, the heating mechanism is installed on the sealing mechanism and enables the raw materials to suspend, the suction casting mechanism is installed on the heating mechanism and conducts suction casting on the raw materials, and the exhaust mechanism is installed on the sealing mechanism and conveniently pumps out air in the device. The material pushing mechanism is installed on the sealing mechanism and pushes materials in the exhaust mechanism to be conveyed into the heating mechanism, and the cooling mechanism is installed on the sealing mechanism and accelerates cooling of the materials in the mold.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of metal smelting, in particular to a vacuum cold crucible suspension smelting and suction casting device. BACKGROUND

[0002] The cold crucible suspension smelting is a metallurgical method for alloy electromagnetic smelting by using the resolving water-cooled copper crucible, which fully utilizes the thermal effect and force effect of the electromagnetic field and metal interaction, on the one hand, the eddy current heat generated by the alternating magnetic field makes the metal material melt, on the other hand, the electromagnetic force generated by the alternating magnetic field makes the metal melt and the crucible wall keep soft contact or non-contact.

[0003] The existing vacuum cold crucible suspension smelting and suction casting device, for example, the utility model patent with the application number 201720526529.6 discloses a kind of vacuum cold crucible suspension smelting and suction casting device, its main structure includes vacuum cavity, cold crucible suspension heating system, suction casting system and cooling system, the vacuum cavity adopts double-layer structure, and the inner and outer layers are welded by stainless steel, and the interlayer is cooled by water, the cold crucible suspension smelting system includes resolving water-cooled copper crucible, induction heating coil and the power matched therewith;When using, first, titanium alloy base material is installed in the cold crucible, then vacuum is extracted in the furnace body, and argon is filled to 0.06Mpa, then cooling water is started, and the cooling water is kept in circulating flow state, the vacuum tank is extracted by vacuum pump, the induction heating coil is connected with the power, the vortex is generated in the metal base material and starts heating, when the titanium alloy in the cold crucible is completely melted, the suction casting mold is lifted into the metal melt by lifting motor, then the vacuum electromagnetic valve is quickly opened, the metal melt is sucked into the suction casting mold in an instant and solidified into a shape.

[0004] However, the existing mold needs a long time of natural cooling after suction casting, which affects work efficiency, and when the influence of added elements on melt properties needs to be dynamically studied, the existing device is difficult to meet the requirements of adding materials in the middle of smelting. UTILITY MODEL CONTENTS

[0005] To solve the above technical problems, the utility model provides a vacuum cold crucible suspension smelting and suction casting device which not only can add materials during heating and smelting process, facilitate dynamic study of the influence of added elements on melt properties, but also accelerate material cooling by using cooling water after the material enters the mold, improve work efficiency.

[0006] The utility model discloses a vacuum cold crucible suspension smelting and suction casting device, including sealing mechanism, still including heating mechanism, suction casting mechanism, exhaust mechanism, push material mechanism and cooling mechanism, heating mechanism installs on sealing mechanism and makes raw material suspension, suction casting mechanism installs on heating mechanism and to raw material suction casting, exhaust mechanism installs on sealing mechanism and facilitates the air in the device extraction, push material mechanism installs on sealing mechanism and push the material in exhaust mechanism delivery to heating mechanism, cooling mechanism installs on sealing mechanism and accelerates the material cooling in mould, the staff opens sealing mechanism, adds raw material to heating mechanism, then closes sealing mechanism, heating mechanism heats raw material, when needing to add material in the process of reheating, material is added to exhaust mechanism first, then push material mechanism pushes material to heating mechanism, and the influence of the added element on the melt property is conveniently studied dynamically, when material completely melts, starts suction casting mechanism and solidifies into shape after sucking out material, and cooling mechanism utilizes cooling water and accelerates the material cooling in suction casting mechanism.

[0007] Preferably, the sealing mechanism includes a stainless steel furnace body, a hinge, a sealing cover, an observation window, and a handle. The bottom end of the stainless steel furnace body is connected to the ground. The stainless steel furnace body has a cavity inside. The hinge is installed on the stainless steel furnace body. The sealing cover is installed on the hinge. The observation window is installed on the sealing cover. The handle is installed on the sealing cover. The staff operates the handle to open the sealing cover, places raw materials in the heating mechanism, and then closes the sealing cover to ensure the sealing state in the cavity. The staff observes the smelting and suction casting of the raw materials through the observation window.

[0008] Preferably, the heating mechanism includes a magnetic suspension base, a cold crucible, a controller, and a heating coil. The magnetic suspension base is installed at the bottom end inside the cavity of the stainless steel furnace body. The cold crucible is placed on the magnetic suspension base. The controller is installed on the stainless steel furnace body. The heating coil is installed on the controller. The magnetic suspension base suspends the raw materials in the cold crucible. The controller controls the heating coil to heat the raw materials and smelt the raw materials.

[0009] Preferably, the suction casting mechanism includes two groups of first hydraulic cylinders, a connecting plate, a vacuum pipeline, a solenoid valve, and a suction casting mold. The two groups of first hydraulic cylinders are installed on the stainless steel furnace body. The bottom end of the connecting plate is connected to the top ends of the two groups of first hydraulic cylinders. The vacuum pipeline is installed on the connecting plate and is slidingly installed in the cavity of the stainless steel furnace body. The solenoid valve is installed on the vacuum pipeline. The top end of the suction casting mold is in communication with the inside of the bottom end of the vacuum pipeline. When smelting is completed, the two groups of first hydraulic cylinders drive the connecting plate and the suction casting mold to descend. Then, the solenoid valve is opened. Air is introduced into the vacuum pipeline to make the suction casting mold suck in the smelted raw materials. Then, the two groups of first hydraulic cylinders drive the suction casting mold to ascend, so that the suction casting mold is located in the cooling mechanism to facilitate the solidification of the raw materials.

[0010] Preferably, the exhaust mechanism comprises a discharge pipe, a connecting pipe, two sets of gate valves, a vacuum pump, a first air extraction pipe, a first valve, a second air extraction pipe and a second valve, the discharge pipe is installed in the cavity of the stainless steel furnace body, and a chute is formed in the discharge pipe, the bottom end of the connecting pipe is in communication with the top end of the discharge pipe, the two sets of gate valves are installed on the connecting pipe, the vacuum pump is installed on the stainless steel furnace body, the first air extraction pipe is installed on the vacuum pump and in communication with the cavity of the stainless steel furnace body, the first valve is installed on the first air extraction pipe, the second air extraction pipe is installed on the first air extraction pipe and in communication with the connecting pipe, and the connection position is located between the two sets of gate valves, and the second valve is installed on the second air extraction pipe; the worker closes the second valve and opens the first valve, starts the vacuum pump to extract the air in the cavity of the stainless steel furnace body through the first air extraction pipe, then closes the first valve, so that the cavity of the stainless steel furnace body is in a vacuum state, when it is needed to add materials halfway, opens the gate valve located above, adds the materials into the connecting pipe, then closes the gate valve located above and opens the second valve, starts the vacuum pump, the vacuum pump extracts the air in the connecting pipe through the first air extraction pipe and the second air extraction pipe, then closes the second valve and opens the gate valve located below, and the materials in the connecting pipe fall into the discharge pipe.

[0011] Preferably, the pushing mechanism comprises a servo motor, a speed reducer, a transmission shaft, a driving gear, a rotating shaft, a driven gear, an extension plate, a second hydraulic cylinder and a pushing plate, the servo motor is installed on the stainless steel furnace body, the output end of the servo motor is connected with the input end of the speed reducer, the output end of the speed reducer is connected with the input end of the transmission shaft, the output end of the transmission shaft is connected with the input end of the driving gear, the rotating shaft rotates in the cavity of the stainless steel furnace body, the driven gear is installed on the rotating shaft and is in meshing transmission with the driving gear, the extension plate is installed on the rotating shaft, the second hydraulic cylinder is installed on the extension plate, and the pushing plate is installed on the top end of the second hydraulic cylinder; the second hydraulic cylinder pushes the pushing plate into the discharge pipe, starts the servo motor, the servo motor drives the transmission shaft to rotate through the speed reducer, the transmission shaft drives the driving gear to rotate, the driving gear and the driven gear are in meshing transmission, the driven gear drives the rotating shaft and the extension plate to rotate, the extension plate drives the second hydraulic cylinder and the pushing plate to rotate, so that the pushing plate moves along the chute of the discharge pipe, pushes the materials in the discharge pipe into the cold crucible, and avoids the materials remaining in the discharge pipe.

[0012] Preferably, the cooling mechanism comprises a water pump, a heat exchange pipe and a drain pipe, the bottom end of the water pump is connected with the top end of the stainless steel furnace body, the heat exchange pipe is installed in the cavity of the stainless steel furnace body and in communication with the water pump, and the drain pipe is installed on the stainless steel furnace body and in communication with the heat exchange pipe; starts the water pump, the water pump delivers cooling water into the heat exchange pipe, the heat exchange pipe cools the suction casting mold, accelerates the solidification and molding of the materials, and the cooling water is discharged through the drain pipe.

[0013] The utility model discloses a beneficial effect compared with prior art is: the staff opens the sealing mechanism, and the raw material is added to the heating mechanism, then closes the sealing mechanism, and the raw material is heated to the heating mechanism, when needing to add material in the process of heating again, first material is added to the exhaust mechanism, then push material mechanism pushes material to the heating mechanism, and the influence of the dynamic research adding element to the melt property is convenient, when material completely melts, starts suction casting mechanism and solidifies into the shape of material suction, and cooling mechanism utilizes cooling water and accelerates the material cooling in suction casting mechanism. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the front view structure schematic diagram of the utility model, and the sealing mechanism and push material mechanism are shown in the figure.

[0015] Figure 2 It is the shaft measurement structure schematic diagram of the utility model sealing mechanism and push material mechanism.

[0016] Figure 3 It is the section axial measurement structure schematic diagram of the utility model heating mechanism and suction casting mechanism.

[0017] Figure 4 It is the partial enlarged scale section axial measurement structure schematic diagram of the utility model exhaust mechanism and cooling mechanism.

[0018] Figure 5 It is the partial enlarged scale section axial measurement structure schematic diagram of the push material mechanism of the utility model.

[0019] Mark in the drawing: 01, sealing mechanism, 11, stainless steel furnace body, 12, hinge, 13, sealing cover, 14, observation window, 15, handle, 02, heating mechanism, 21, magnetic suspension base, 22, cold crucible, 23, controller, 24, heating coil, 03, suction casting mechanism, 31, first hydraulic cylinder, 32, connecting plate, 33, vacuum pipeline, 34, electromagnetic valve, 35, suction casting mold, 04, exhaust mechanism, 41, discharge pipe, 42, connecting pipe, 43, gate valve, 44, vacuum pump, 45, first air suction pipe, 46, first valve, 47, second air suction pipe, 48, second valve, 05, push material mechanism, 51, servo motor, 52, speed reducer, 53, transmission shaft, 54, driving gear, 55, rotating shaft, 56, driven gear, 57, extension plate, 58, second hydraulic cylinder, 59, dial plate, 06, cooling mechanism, 61, water pump, 62, heat exchange pipe, 63, drain pipe. DETAILED DESCRIPTION

[0020] In order to facilitate understanding the utility model, below will refer to relevant drawings and the utility model is more comprehensively described.The utility model can be realized in many different forms, and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive.

[0021] Example 1

[0022] The utility model discloses a vacuum cold crucible suspension smelting and suction casting device, including sealing mechanism 01, still including heating mechanism 02, suction casting mechanism 03, exhaust mechanism 04, push material mechanism 05 and cooling mechanism 06, heating mechanism 02 installs on sealing mechanism 01 and makes raw material suspension, suction casting mechanism 03 installs on heating mechanism 02 and suction casting to raw material, exhaust mechanism 04 installs on sealing mechanism 01 and facilitates to draw out device inside air, push material mechanism 05 installs on sealing mechanism 01 and push the material in exhaust mechanism 04 and is transported to heating mechanism 02, and cooling mechanism 06 installs on sealing mechanism 01 and accelerates the material cooling in mould, sealing mechanism 01 includes stainless steel furnace body 11, hinge 12, sealing cover 13, observation window 14 and handle 15, and the bottom of stainless steel furnace body 11 is connected with ground, and the inside of stainless steel furnace body 11 is provided with cavity, and hinge 12 installs on stainless steel furnace body 11, and sealing cover 13 installs on hinge 12, and observation window 14 installs on sealing cover 13, and handle 15 installs on sealing cover 13, heating mechanism 02 includes magnetic suspension base 21, cold crucible 22, controller 23 and heating coil 24, and magnetic suspension base 21 installs on the inside bottom of the cavity of stainless steel furnace body 11, and cold crucible 22 places on magnetic suspension base 21, and controller 23 installs on stainless steel furnace body 11, and heating coil 24 installs on controller 23, suction casting mechanism 03 includes two groups of first hydraulic cylinder 31, connecting plate 32, vacuum pipeline 33, electromagnetic valve 34 and suction casting mould 35, and two groups of first hydraulic cylinder 31 all install on stainless steel furnace body 11, and the bottom of connecting plate 32 is connected with the top of two groups of first hydraulic cylinder 31, and vacuum pipeline 33 installs on connecting plate 32 and is slidingly installed in the cavity of stainless steel furnace body 11, and electromagnetic valve 34 installs on vacuum pipeline 33, and the top of suction casting mould 35 is communicated with the inside bottom of vacuum pipeline 33, exhaust mechanism 04 includes discharge pipe 41, connecting pipe 42, two groups of gate valve 43, vacuum pump 44, first air suction pipe 45, first valve 46, second air suction pipe 47 and second valve 48, and discharge pipe 41 installs in the cavity of stainless steel furnace body 11, and the chute is opened on discharge pipe 41, and the bottom of connecting pipe 42 is communicated with the inside top of discharge pipe 41, and two groups of gate valve 43 all install on connecting pipe 42, and vacuum pump 44 installs on stainless steel furnace body 11, and first air suction pipe 45 installs on vacuum pump 44 and is communicated with the inside cavity of stainless steel furnace body 11, and first valve 46 installs on first air suction pipe 45, and second air suction pipe 47 installs on first air suction pipe 45 and is communicated with connecting pipe 42 inside, and the connecting position is between two groups of gate valve 43, and second valve 48 installs on second air suction pipe 47.The pushing mechanism 05 comprises a servo motor 51, a speed reducer 52, a transmission shaft 53, a driving gear 54, a rotating shaft 55, a driven gear 56, an extension plate 57, a second hydraulic cylinder 58 and a pushing plate 59, the servo motor 51 is installed on the stainless steel furnace body 11, the output end of the servo motor 51 is connected with the input end of the speed reducer 52, the output end of the speed reducer 52 is connected with the input end of the transmission shaft 53, the output end of the transmission shaft 53 is connected with the input end of the driving gear 54, the rotating shaft 55 rotates in the cavity of the stainless steel furnace body 11, the driven gear 56 is installed on the rotating shaft 55 and is in meshing transmission with the driving gear 54, the extension plate 57 is installed on the rotating shaft 55, the second hydraulic cylinder 58 is installed on the extension plate 57, and the pushing plate 59 is installed on the top end of the second hydraulic cylinder 58; in the working process, first, the staff opens the sealing cover 13 through the handle 15, puts the raw materials in the cold crucible 22, and then closes the sealing cover 13 to ensure the sealing state in the cavity, observes the smelting and suction casting of the raw materials through the observation window 14, closes the second valve 48 and opens the first valve 46, starts the vacuum pump 44 to pump out the air in the cavity of the stainless steel furnace body 11 through the first air suction pipe 45, then closes the first valve 46, so that the cavity of the stainless steel furnace body 11 is in a vacuum state, the magnetic suspension base 21 makes the raw materials in the cold crucible 22 suspended, and the controller 23 controls the heating coil 24 to heat and smelt the raw materials, when it is needed to add materials in the middle of the process, the upper gate valve 43 is opened, the materials are added into the connecting pipe 42, then the upper gate valve 43 is closed and the second valve 48 is opened, the vacuum pump 44 is started, the vacuum pump 44 pumps out the air in the connecting pipe 42 through the first air suction pipe 45 and the second air suction pipe 47, then the second valve 48 is closed and the lower gate valve 43 is opened, the materials in the connecting pipe 42 fall into the discharging pipe 41, the second hydraulic cylinder 58 pushes the pushing plate 59 into the discharging pipe 41, the servo motor 51 is started, the servo motor 51 drives the transmission shaft 53 to rotate through the speed reducer 52, the transmission shaft 53 drives the driving gear 54 to rotate, the driving gear 54 and the driven gear 56 are in meshing transmission, the driven gear 56 drives the rotating shaft 55 and the extension plate 57 to rotate, the extension plate 57 drives the second hydraulic cylinder 58 and the pushing plate 59 to rotate, so that the pushing plate 59 moves along the chute of the discharging pipe 41, pushes the materials in the discharging pipe 41 into the cold crucible 22, and avoids the materials remaining in the discharging pipe 41, when the smelting is completed, the two groups of first hydraulic cylinders 31 drive the connecting plates 32 and the suction casting mold 35 to descend, then the electromagnetic valve 34 is opened, the air is introduced into the vacuum pipeline 33 to make the suction casting mold 35 suck the smelted raw materials, then the two groups of first hydraulic cylinders 31 drive the suction casting mold 35 to ascend, so that the suction casting mold 35 is located in the cooling mechanism 06 to facilitate the solidification and molding of the raw materials.

[0023] Example 2

[0024] As Figures 1 to 5As shown, the vacuum cold crucible suspension smelting and suction casting device of the utility model, on the basis of embodiment 1;Cooling mechanism 06 includes water pump 61, heat exchange pipe 62 and drain pipe 63, the bottom end of water pump 61 is connected with the top end of stainless steel furnace body 11, heat exchange pipe 62 is installed in the cavity of stainless steel furnace body 11 and is communicated with the inside of water pump 61, drain pipe 63 is installed on stainless steel furnace body 11 and is communicated with the inside of heat exchange pipe 62;When it works, first, the staff operates handle 15 to open sealing cover 13, places raw materials in cold crucible 22, then closes sealing cover 13, guarantees the sealing state in the cavity, observes raw material smelting and suction casting condition through observation window 14, the staff closes second valve 48 and opens first valve 46, starts vacuum pump 44 and passes through first air suction pipe 45 to extract the air in the cavity of stainless steel furnace body 11, then closes first valve 46, makes the cavity in stainless steel furnace body 11 be in vacuum state, magnetic suspension base 21 makes raw materials in cold crucible 22 suspend, heats raw materials through controller 23 control heating coil 24, smelts raw materials, when needing to add materials midway, opens the gate valve 43 located in the upper, the material is added to the connecting pipe 42, then the gate valve 43 located in the upper is closed and the second valve 48 is opened, the vacuum pump 44 is started, the vacuum pump 44 extracts the air in the connecting pipe 42 through the first air suction pipe 45 and the second air suction pipe 47, then the second valve 48 is closed and the gate valve 43 located in the lower is opened, the material in the connecting pipe 42 falls into the discharge pipe 41, the second hydraulic cylinder 58 pushes the push plate 59 into the discharge pipe 41, the servo motor 51 is started, the servo motor 51 drives the transmission shaft 53 to rotate through the speed reducer 52, the transmission shaft 53 drives the driving gear 54 to rotate, the driving gear 54 and the driven gear 56 mesh transmission, the driven gear 56 drives the rotating shaft 55 and the extension plate 57 to rotate, the extension plate 57 drives the second hydraulic cylinder 58 and the push plate 59 to rotate, makes the push plate 59 move along the sliding groove of the discharge pipe 41, pushes the material in the discharge pipe 41 to the cold crucible 22, avoids the material to remain in the discharge pipe 41, when smelting is completed, two groups of first hydraulic cylinder 31 drive connecting plate 32 and suction casting mold 35 to descend, then open electromagnetic valve 34, the air is passed into vacuum pipeline 33 and makes suction casting mold 35 suction the smelted raw materials, then two groups of first hydraulic cylinder 31 drive suction casting mold 35 to lift, make suction casting mold 35 be located in the middle of heat exchange pipe 62, start water pump 61, water pump 61 sends cooling water to heat exchange pipe 62, heat exchange pipe 62 cools suction casting mold 35, accelerates material solidification and forms, cooling water is discharged through drain pipe 63.

[0025] The vacuum pump 44, the servo motor 51, the speed reducer 52 and the water pump 61 of the utility model are purchased on the market, and the technical personnel in the industry only need to install and operate according to the attached instruction manual, without the creative labor of the technical personnel in the field.

[0026] The above merely is the preferred implementation manner of the present application, and it should be noted that, for the ordinary skilled in the art, without departing from the technical principles of the present application, a number of improvements and modifications can be made, and these improvements and modifications should also be considered as the protection scope of the present application.

Claims

1. A vacuum cold crucible levitation melting and suction casting apparatus comprising a sealing mechanism (01); characterized in that, The heating mechanism (02) is installed on the sealing mechanism (01) and suspends the raw materials, the suction casting mechanism (03) is installed on the heating mechanism (02) and sucks and casts the raw materials, the exhaust mechanism (04) is installed on the sealing mechanism (01) and facilitates the extraction of air in the device, the pushing mechanism (05) is installed on the sealing mechanism (01) and pushes the material in the exhaust mechanism (04) to the heating mechanism (02), and the cooling mechanism (06) is installed on the sealing mechanism (01) and accelerates the cooling of the material in the mold.

2. A vacuum cold crucible levitation melting and suction casting apparatus as claimed in claim 1, wherein The sealing mechanism (01) comprises a stainless steel furnace body (11), a hinge (12), a sealing cover (13), an observation window (14) and a handle (15), the bottom end of the stainless steel furnace body (11) is connected with the ground, the inside of the stainless steel furnace body (11) is provided with a cavity, the hinge (12) is installed on the stainless steel furnace body (11), the sealing cover (13) is installed on the hinge (12), the observation window (14) is installed on the sealing cover (13), and the handle (15) is installed on the sealing cover (13).

3. A vacuum cold crucible levitation melting and suction casting apparatus as claimed in claim 2, wherein The heating mechanism (02) comprises a magnetic suspension base (21), a cold crucible (22), a controller (23) and a heating coil (24), the magnetic suspension base (21) is installed at the bottom end inside the cavity of the stainless steel furnace body (11), the cold crucible (22) is placed on the magnetic suspension base (21), the controller (23) is installed on the stainless steel furnace body (11), and the heating coil (24) is installed on the controller (23).

4. A vacuum cold crucible levitation melting and suction casting apparatus as claimed in claim 2, wherein The suction casting mechanism (03) comprises two groups of first hydraulic cylinders (31), a connecting plate (32), a vacuum pipeline (33), a solenoid valve (34) and a suction casting mold (35), the two groups of first hydraulic cylinders (31) are installed on the stainless steel furnace body (11), the bottom end of the connecting plate (32) is connected with the top ends of the two groups of first hydraulic cylinders (31), the vacuum pipeline (33) is installed on the connecting plate (32) and is slidingly installed in the cavity of the stainless steel furnace body (11), the solenoid valve (34) is installed on the vacuum pipeline (33), and the top end of the suction casting mold (35) is in communication with the inside of the bottom end of the vacuum pipeline (33).

5. A vacuum cold crucible levitation melting and suction casting apparatus as claimed in claim 2, wherein The exhaust mechanism (04) comprises a discharge pipe (41), a connecting pipe (42), two sets of gate valves (43), a vacuum pump (44), a first exhaust pipe (45), a first valve (46), a second exhaust pipe (47) and a second valve (48), the discharge pipe (41) is installed in the cavity of the stainless steel furnace body (11), and a chute is opened on the discharge pipe (41), the bottom end of the connecting pipe (42) is in communication with the top end of the discharge pipe (41), the two sets of gate valves (43) are installed on the connecting pipe (42), the vacuum pump (44) is installed on the stainless steel furnace body (11), the first exhaust pipe (45) is installed on the vacuum pump (44) and in communication with the cavity of the stainless steel furnace body (11), the first valve (46) is installed on the first exhaust pipe (45), the second exhaust pipe (47) is installed on the first exhaust pipe (45) and in communication with the connecting pipe (42), and the connection position is between the two sets of gate valves (43), and the second valve (48) is installed on the second exhaust pipe (47).

6. A vacuum cold crucible levitation melting and suction casting apparatus as claimed in claim 2, wherein The pushing mechanism (05) comprises a servo motor (51), a speed reducer (52), a transmission shaft (53), a driving gear (54), a rotating shaft (55), a driven gear (56), an extension plate (57), a second hydraulic cylinder (58) and a push plate (59), the servo motor (51) is installed on the stainless steel furnace body (11), the output end of the servo motor (51) is connected with the input end of the speed reducer (52), the output end of the speed reducer (52) is connected with the input end of the transmission shaft (53), the output end of the transmission shaft (53) is connected with the input end of the driving gear (54), the rotating shaft (55) rotates in the cavity of the stainless steel furnace body (11), the driven gear (56) is installed on the rotating shaft (55) and is in meshing transmission with the driving gear (54), the extension plate (57) is installed on the rotating shaft (55), the second hydraulic cylinder (58) is installed on the extension plate (57), and the push plate (59) is installed on the top end of the second hydraulic cylinder (58).

7. A vacuum cold crucible levitation melting and suction casting apparatus as claimed in claim 2, wherein The cooling mechanism (06) comprises a water pump (61), a heat exchange pipe (62) and a drain pipe (63), the bottom end of the water pump (61) is connected with the top end of the stainless steel furnace body (11), the heat exchange pipe (62) is installed in the cavity of the stainless steel furnace body (11) and in communication with the inside of the water pump (61), and the drain pipe (63) is installed on the stainless steel furnace body (11) and in communication with the inside of the heat exchange pipe (62).

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