Vacuum induction melting furnace

Abstract

The utility model relates to the technical field of vacuum induction melting furnaces, and discloses a vacuum induction melting furnace which comprises a sealing tank and a quantitative pipe, a heating assembly is arranged in the sealing tank, a connecting pipe is fixedly connected to the inner side of the sealing tank, and a gas heating assembly is arranged on the outer side of the end of the connecting pipe. A vacuum quantifying assembly is arranged in the quantifying pipe, a cover body is fixedly connected to the bottom of the quantifying pipe, and the sealing tank and the cover body are connected through a clamping ring assembly; the gas heating assembly comprises a heat preservation shell, and the heat preservation shell is fixedly connected to the outer side of the connecting pipe. According to the hydrogen treatment device, hydrogen and argon are heated through the heat preservation shell, the heating box and the heating wire assembly in the gas heating assembly, the second driving motor drives the connecting rod and the stirring blades to stir the gas, the preheated hydrogen can be more effectively diffused into a titanium-based composite material matrix, and hydrogen treatment is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to vacuum induction melting furnace technical field especially relates to a kind of vacuum induction melting furnaces. BACKGROUND

[0002] Hydrogen device and vacuum induction melting furnace using it are a kind of equipment system for material melting and can realize the introduction of hydrogen element into material, which is mainly composed of hydrogen device and vacuum induction melting furnace, and the two parts work together to melt the material in vacuum or specific atmosphere, and hydrogen atoms enter the material matrix being melted by special gas introduction and control method.

[0003] Currently, when materials are melted in the vacuum induction melting furnace, hydrogen and argon are usually directly delivered to the vacuum induction melting furnace by the conveying device. The direct input of hydrogen and argon into the vacuum induction melting furnace can slightly increase the pressure in the furnace, promote the convection and stirring of the metal liquid, make the temperature and composition of the melt more uniform, and be beneficial to improving the consistency of melting effect and product quality.

[0004] After hydrogen and argon enter the high-temperature vacuum induction melting furnace, they will absorb a large amount of heat for their own warming. This causes the local temperature in the melting furnace to drop, especially in the area near the gas inlet, resulting in uneven temperature field in the furnace. In the area with higher temperature, the material will melt quickly, while in the area with lower temperature, the material melting will be delayed. Taking titanium-based composite material as an example, the inconsistency of melting speed will cause the base metal in some areas to have melted, while the reinforcing phase particles have not completely melted, affecting the uniformity of material composition. Therefore, a vacuum induction melting furnace is proposed to solve the above problems. SUMMARY

[0005] In order to make up for the above shortcomings, the utility model provides a kind of vacuum induction melting furnace, aims at improving the problem that the input of hydrogen and argon in prior art leads to uneven temperature in the furnace.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] A kind of vacuum induction melting furnace, including sealed tank and dosing pipe, the sealed tank inside is provided with heating assembly, the sealed tank inner side is fixedly connected with connecting pipe, the connecting pipe end outside is provided with gas heating assembly, the dosing pipe is internally provided with vacuum dosing assembly, the dosing pipe bottom is fixedly connected with cover, the sealed tank and cover are connected by snap ring assembly;

[0008] The gas heating assembly comprises a heat preservation shell fixedly connected outside the connecting pipe, a heating box fixedly connected inside the heat preservation shell, the heating box also fixedly connected outside the connecting pipe, heating wire assemblies fixedly connected inside both ends of the heat preservation shell, and argon gas delivery pipes and hydrogen gas delivery pipes fixedly connected inside both ends of the heating box and the heat preservation shell respectively.

[0009] As a further description of the above technical solution:

[0010] The gas heating assembly comprises a driving motor two fixedly connected outside the heat preservation shell, a connecting rod rotatably connected inside the heating box and the heat preservation shell, and a plurality of stirring blades fixedly connected outside the connecting rod.

[0011] As a further description of the above technical solution:

[0012] The vacuum quantitative assembly comprises a vacuum pump fixedly connected outside the quantitative pipe, an input end of the vacuum pump fixedly connected inside the quantitative pipe, a valve assembly one fixedly connected to the middle part of the quantitative pipe, a driving motor one fixedly connected outside the bottom of the quantitative pipe, and an output end of the driving motor one fixedly connected inside the quantitative ball.

[0013] As a further description of the above technical solution:

[0014] The heating assembly comprises a bottom block fixedly connected inside the bottom of the sealed tank, a crucible fixedly connected inside the bottom block, a heat preservation layer fixedly connected outside the crucible, a coil fixedly connected inside the sealed tank, the coil wound outside the heat preservation layer, and both ends of the coil connected with an external power supply.

[0015] As a further description of the above technical solution:

[0016] The sealed tank top is fixedly connected with two fixed clamping blocks, the cover bottom is fixedly connected with a connecting ring, and the connecting ring is rotatably connected with two arc-shaped clamping blocks inside.

[0017] As a further description of the above technical solution:

[0018] The cover is fixedly connected with an observation window inside and two handles outside.

[0019] As a further description of the above technical solution:

[0020] The quantitative pipe top is fixedly connected with a feeding hopper.

[0021] As a further description of the above technical solution:

[0022] Valve assembly two is arranged in the middle of the hydrogen conveying pipe, the argon conveying pipe and the connecting pipe.

[0023] The utility model has the advantages of the following:

[0024] 1、 the utility model discloses, through the heat preservation shell, heating box and heating wire subassembly in gas heating subassembly, hydrogen and argon are heated to drive motor no.

[0025] 2、 the utility model discloses, through vacuum rationing assembly in rationing pipe, including vacuum pump, valve assembly one and the rationing ball driven by drive motor no. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 A three-dimensional schematic view of the vacuum induction melting furnace is provided for the utility model;

[0027] Figure 2 A structure schematic view of the observation window of the vacuum induction melting furnace is provided for the utility model;

[0028] Figure 3 A structure schematic view of the heating subassembly of the vacuum induction melting furnace is provided for the utility model;

[0029] Figure 4 A structure schematic view of the coil of the vacuum induction melting furnace is provided for the utility model;

[0030] Figure 5 A structure schematic view of the rationing ball of the vacuum induction melting furnace is provided for the utility model;

[0031] Figure 6 A structure schematic view of the arc-shaped clamping block of the vacuum induction melting furnace is provided for the utility model.

[0032] LEGEND:

[0033] 1, sealed tank; 2, cover; 3, handle; 4, viewing window; 5, dosing tube; 6, vacuum pump; 7, feed hopper; 8, drive motor one; 9, valve assembly one; 10, connecting ring; 11, heating box; 12, hydrogen delivery tube; 13, heat preservation shell; 14, heating wire assembly; 15, arc-shaped clamping block; 16, fixed clamping block; 17, argon delivery tube; 18, drive motor two; 19, connecting rod; 20, stirring blade; 21, connecting pipe; 22, bottom block; 23, heat preservation layer; 24, coil; 25, crucible; 26, dosing ball; 27, valve assembly two. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0035] With reference to Figure 1 , Figure 2 and Figure 3 , the present application provides an embodiment: a vacuum induction melting furnace, comprising a sealed tank 1 and a dosing tube 5, the sealed tank 1 is internally provided with a heating assembly, the sealed tank 1 is internally fixedly connected with a connecting pipe 21, the outer side of the end of the connecting pipe 21 is provided with a gas heating assembly, the dosing tube 5 is internally provided with a vacuum dosing assembly, the dosing tube 5 is fixedly connected with a cover 2 at the bottom, and the sealed tank 1 and the cover 2 are connected through a clamping ring assembly;

[0036] The gas heating assembly comprises a heat preservation shell 13 fixedly connected outside the connecting pipe 21, a heating box 11 fixedly connected inside the heat preservation shell 13, the heating box 11 also fixedly connected outside the connecting pipe 21, heating wire assemblies 14 fixedly connected inside both ends of the heat preservation shell 13, and an argon gas delivery pipe 17 and a hydrogen gas delivery pipe 12 fixedly connected inside both ends of the heating box 11 and the heat preservation shell 13 respectively. The hydrogen gas and the argon gas enter the heating box 11 outside the end of the connecting pipe 21 through the hydrogen gas delivery pipe 12 and the argon gas delivery pipe 17 respectively, the heat preservation shell 13 plays a heat preservation role to reduce heat loss, and the heating wire assemblies 14 heat the gas in the heating box 11 to increase the temperature of the gas. The gas heating assembly comprises a second driving motor 18 fixedly connected outside the heat preservation shell 13, a connecting rod 19 rotatably connected inside the heating box 11 and the heat preservation shell 13, and a plurality of stirring blades 20 fixedly connected outside the connecting rod 19. The second driving motor 18 drives the connecting rod 19 to rotate, the stirring blades 20 on the connecting rod 19 stir the hydrogen gas and the argon gas in the heating box 11 to make the two kinds of gas fully mixed and uniform, and ensure the uniformity of heating. The hydrogen gas delivery pipe 12, the argon gas delivery pipe 17 and the middle part of the connecting pipe 21 are all provided with a second valve assembly 27. The second valve assembly 27 can accurately control the flow of the hydrogen gas and the argon gas, and adjust the amount of gas entering the sealed tank 1 according to process requirements.

[0037] With reference to Figure 1 , Figure 2 and Figure 5 , the vacuum quantifying assembly comprises a vacuum pump 6 fixedly connected outside the quantifying pipe 5, an input end of the vacuum pump 6 fixedly connected inside the quantifying pipe 5, a valve assembly 9 fixedly connected to the middle part of the quantifying pipe 5, a first driving motor 8 fixedly connected outside the bottom of the quantifying pipe 5, a quantifying ball 26 rotatably connected inside the bottom, and an output end of the first driving motor 8 fixedly connected inside the quantifying ball 26. The vacuum pump 6 is started to vacuumize the quantifying pipe 5 to remove impurities such as air in the pipe. The first driving motor 8 drives the quantifying ball 26 to rotate, the amount of material entering the sealed tank 1 from the quantifying pipe 5 is accurately controlled by controlling the rotation angle and time of the quantifying ball 26. The valve assembly 9 is opened or closed at a suitable time to control the feeding of the material. The quantifying pipe 5 is fixedly connected with a feeding hopper 7 at the top. The material is loaded into the quantifying pipe 5 through the feeding hopper 7.

[0038] With reference to Figure 2 , Figure 4 and Figure 6The heating assembly comprises a bottom block 22 fixedly connected to the inner side of the bottom of the sealed tank 1, a crucible 25 fixedly connected to the inner side of the bottom block 22, a heat preservation layer 23 fixedly connected to the outer side of the crucible 25, a coil 24 fixedly connected to the inner side of the sealed tank 1, and the coil 24 is wound on the outer side of the heat preservation layer 23, and the two ends of the coil 24 are connected to an external power source. The heating assembly in the sealed tank 1 works. After the coil 24 is powered on, heat is generated in the crucible 25 due to electromagnetic induction, so that the material in the crucible 25 is melted. The bottom block 22 supports the crucible 25, and the heat preservation layer 23 reduces the heat loss of the crucible 25, so as to ensure the efficient operation of the smelting process. The clamping ring assembly comprises two fixed clamping blocks 16 fixedly connected to the outer side of the sealed tank 1, a connecting ring 10 fixedly connected to the bottom of the cover body 2, and two arc-shaped clamping blocks 15 rotatably connected to the inner side of the connecting ring 10. The cover body 2 is connected to the sealed tank 1 through the clamping ring assembly. The cover body 2 is placed above the sealed tank 1, and the arc-shaped clamping blocks 15 on the inner side of the connecting ring 10 are rotated to be clamped with the fixed clamping blocks 16 on the outer side of the sealed tank 1, so as to realize the sealed connection between the sealed tank 1 and the cover body 2, and prevent the leakage of the gas in the furnace. The inner side of the cover body 2 is fixedly connected with an observation window 4, and the outer side of the cover body 2 is fixedly connected with two handles 3. The observation window 4 facilitates the observation of the situation in the furnace by the operator, and the handle 3 facilitates the operation of the cover body 2.

[0039] Working principle: first, the titanium-based composite material to be smelted is placed in the quantitative pipe 5 through the feeding hopper 7, and the quantitative control of the material is realized by the vacuum quantitative assembly. The vacuum pump 6 works to extract the air in the quantitative pipe 5 to a certain vacuum degree, and the valve assembly one 9 can control the residence and release of the material in the quantitative pipe 5. The driving motor one 8 can drive the quantitative ball 26 to rotate to realize the accurate control of the amount of material. After the material is prepared, the cover body 2 is connected to the sealed tank 1. By rotating the arc-shaped clamping block 15, it is clamped with the fixed clamping block 16 to realize the sealed connection between the sealed tank 1 and the cover body 2, and to ensure that the smelting process is carried out in a sealed environment. The observation window 4 facilitates the observation of the situation in the furnace, and the handle 3 facilitates the operation of the cover body 2.

[0040] Hydrogen and argon enter the connecting pipe 21 through the hydrogen delivery pipe 12 and the argon delivery pipe 17 respectively. The gas heating assembly on the outer side of the connecting pipe 21 heats the gas. The heat preservation shell 13 plays a heat preservation role to reduce heat loss. The heating box 11 and the heating wire assembly 14 at both ends heat the gas to improve the temperature of the gas, so that the gas has a suitable temperature before entering the sealed tank 1, which is conducive to better action with the titanium-based composite material in the smelting furnace. At the same time, the driving motor two 18 drives the connecting rod 19 to rotate, and the stirring blade 20 on the connecting rod 19 stirs the gas in the heating box 11, so that the hydrogen and argon are mixed more uniformly, and the uniformity of heating is ensured.

[0041] The heating assembly in the sealed tank 1 heats the material in the crucible 25. The bottom block 22 supports the crucible 25, the insulation layer 23 reduces the heat loss of the crucible 25, and the coil 24 melts the metal material in the crucible 25 by electromagnetic induction. During the smelting process, the preheated and uniformly mixed hydrogen and argon are introduced into the sealed tank 1 by controlling the flow of hydrogen and argon through the valve assembly 27. Argon is used as a protective gas to prevent titanium-based composite materials from being oxidized and nitrided at high temperatures; hydrogen participates in the reaction with titanium-based composite materials. Under the combined action of high temperature, gas atmosphere and electromagnetic stirring, the titanium-based composite material completes the smelting process in the crucible 25, and the hydrogen has the opportunity to diffuse into the matrix to achieve hydrogenation treatment. During the whole process, various valve assemblies can accurately control the gas flow, material in and out and other operations according to the process requirements, to ensure the stable and efficient smelting and hydrogenation process.

[0042] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it still can be modified to the technical solutions recorded in the foregoing embodiments, or to the equivalent replacement of some technical features, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application, should be included in the protection scope of the present application.

Claims

1. A vacuum induction melting furnace comprising a sealed pot (1) and a dosing tube (5), characterized in that: The sealing tank (1) is internally provided with a heating assembly, the sealing tank (1) is fixedly connected with a connecting pipe (21) on the inner side, a gas heating assembly is arranged on the outer side of the end of the connecting pipe (21), a vacuum quantitative assembly is arranged in the inside of the quantitative pipe (5), the quantitative pipe (5) is fixedly connected with a cover body (2) on the bottom, and the sealing tank (1) and the cover body (2) are connected through a clasp ring assembly; The gas heating assembly comprises a heat preservation shell (13), the heat preservation shell (13) is fixedly connected on the outer side of the connecting pipe (21), the heat preservation shell (13) is fixedly connected with a heating box (11) on the inner side, the heating box (11) is also fixedly connected on the outer side of the connecting pipe (21), the heat preservation shell (13) is fixedly connected with a heating wire assembly (14) on the inner side of both ends, and the heating box (11) and the heat preservation shell (13) are fixedly connected with an argon gas delivery pipe (17) and a hydrogen gas delivery pipe (12) on the inner side of both ends respectively.

2. A vacuum induction melting furnace according to claim 1, characterised in that: The gas heating assembly comprises a driving motor two (18), the driving motor two (18) is fixedly connected on the outer side of the heat preservation shell (13), the heating box (11) and the heat preservation shell (13) are rotatably connected with a connecting rod (19) on the inner side, and a plurality of stirring blades (20) are fixedly connected on the outer side of the connecting rod (19).

3. A vacuum induction melting furnace as claimed in claim 1, wherein: The vacuum quantitative assembly comprises a vacuum pump (6), the vacuum pump (6) is fixedly connected on the outer side of the quantitative pipe (5), the input end of the vacuum pump (6) is fixedly connected on the inner side of the quantitative pipe (5), a valve assembly one (9) is fixedly connected on the middle of the quantitative pipe (5), a driving motor one (8) is fixedly connected on the outer side of the bottom of the quantitative pipe (5), a quantitative ball (26) is rotatably connected on the inner side of the bottom of the quantitative pipe (5), and the output end of the driving motor one (8) is fixedly connected in the inside of the quantitative ball (26).

4. A vacuum induction melting furnace as claimed in claim 1, wherein: The heating assembly comprises a bottom block (22), the bottom block (22) is fixedly connected on the inner side of the bottom of the sealing tank (1), the bottom block (22) is fixedly connected with a crucible (25) on the inner side, the crucible (25) is fixedly connected with a heat preservation layer (23) on the outer side, the sealing tank (1) is fixedly connected with a coil (24) on the inner side, the coil (24) is wound on the outer side of the heat preservation layer (23), and both ends of the coil (24) are connected with an external power supply.

5. A vacuum induction melting furnace as claimed in claim 1, wherein: The clasp ring assembly comprises a fixed clamping block (16), the two fixed clamping blocks (16) are fixedly connected on the outer side of the sealing tank (1), the cover body (2) is fixedly connected with a connecting ring (10) on the bottom, and the connecting ring (10) is rotatably connected with two arc-shaped clamping blocks (15) on the inner side.

6. A vacuum induction melting furnace as claimed in claim 1, characterized in that: The cover body (2) is fixedly connected with an observation window (4) on the inner side, and the cover body (2) is fixedly connected with two handles (3) on the outer side.

7. A vacuum induction melting furnace as claimed in claim 1, wherein: The quantitative pipe (5) is fixedly connected with a feeding hopper (7) on the top.

8. A vacuum induction melting furnace as claimed in claim 1, wherein: The hydrogen gas delivery pipe (12), the argon gas delivery pipe (17) and the connecting pipe (21) are all provided with a valve assembly two (27) on the middle.

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