CN211977565U - Structure of metal containing chamber of induction melting furnace - Google Patents
Structure of metal containing chamber of induction melting furnace Download PDFInfo
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- CN211977565U CN211977565U CN202020598998.0U CN202020598998U CN211977565U CN 211977565 U CN211977565 U CN 211977565U CN 202020598998 U CN202020598998 U CN 202020598998U CN 211977565 U CN211977565 U CN 211977565U
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Abstract
The utility model relates to a structure of metal containing chamber of induction melting furnace. The structure of the metal receiving chamber of the induction melting furnace includes: a furnace main body having a receiving chamber for receiving a metal; an induction coil for generating an alternating current in the metal within the containment chamber when the containment chamber is provided with metal; a spoiler having an outer circumferential wall including a first spiral protrusion for guiding the metal in the receiving chamber to be turned upward or downward when the metal provided in the receiving chamber is in a molten state. The induction coil generating an alternating current in the metal while the containment chamber is being supplied with metal, causing it to heat to a molten state; subsequently, under the action of Lorentz force, the molten metal rotates, the metal in the containing chamber is guided by the flow disturbing piece to turn upwards or downwards, the uniform mixing state of some components in the molten metal can be improved, the dispersing effect of flocculent fibers and particle lumps is improved, and the components of the molten metal are more uniform.
Description
Technical Field
The utility model relates to a metal casting technical field specifically is a structure that relates to an induction melting furnace metal holds room.
Background
In the process of smelting metal-based composite materials, such as fiber composite materials, in the traditional induction smelting furnace, although lorentz force can enable molten metal to rotate in a containing chamber or even rotate in a suspension manner, the wall surface of a cavity in the containing chamber is smooth, and a turbulence device is not arranged; therefore, the molten metal rotates in laminar flow in the accommodating chamber under the action of the lorentz force, and some components in the molten metal, such as flocculent fibers, particle agglomerates and the like, are in a state of being relatively static with respect to the molten metal, so that the purpose of homogenization cannot be achieved.
In addition, a graphite crucible is often used as a melting vessel in a conventional receiving chamber of a medium-frequency or high-frequency induction melting furnace. Because of the excellent conductivity of the graphite, most of the eddy current acts on the graphite crucible to heat the graphite crucible, and then the heat is transferred to the metal material in the accommodating chamber through heat conduction and radiation; more importantly, the molten metal melt in the containment chamber cannot be caused to flow in a turbulent flow regime of relatively large magnitude due to the weakening of the lorentz force, making it difficult to enhance homogenization of the molten metal components.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention has been made in order to provide a structure of a metal receiving chamber of an induction melting furnace that overcomes or at least partially solves the above problems.
The structure of the metal receiving chamber of the induction melting furnace comprises:
a furnace main body having a receiving chamber for receiving a metal;
an induction coil for generating an alternating current in the metal within the containment chamber when the containment chamber is provided with metal;
a spoiler having an outer circumferential wall including a first spiral protrusion for guiding the metal in the receiving chamber to be turned upward or downward when the metal provided in the receiving chamber is in a molten state.
Optionally, the inner peripheral wall of the accommodating chamber comprises a second helical protrusion for guiding the metal in the accommodating chamber to turn over under the action of lorentz force when the metal provided by the accommodating chamber is in a molten state; the second spiral protrusion rotates in the opposite direction to the first spiral protrusion.
Optionally, the inside peripheral wall of the containment chamber comprises protrusions for dispersing agglomerates of fibers and/or particles in the metal flowing around it when the metal supplied to the containment chamber is in a molten state.
Optionally, the protrusions are staggered in the horizontal direction.
Optionally, the furnace body comprises a furnace bottom and a furnace wall, and the furnace wall is formed by stacking a plurality of furnace wall units; the space surrounded by the hearth and the furnace walls forms the containment chamber.
Optionally, the furnace body comprises a drain channel in communication with the containment chamber for draining molten metal within the containment chamber; the structure of the metal receiving chamber of the induction smelting furnace further comprises a stopper rod for regulating the flow of metal in a molten state in the tapping channel.
Optionally, the drainage channel is arranged on the furnace bottom.
Optionally, the spoiler comprises a fluid channel, the drain channel communicating with the containment chamber via the fluid channel; the plug rod is inserted in the mounting hole and can move along the axis direction of the mounting hole to adjust the flow of the metal in the molten state in the liquid discharge channel, and meanwhile, the plug rod applies static pressure when the metal in the molten state enters the cavity of the mold.
Optionally, the lower end of the spoiler is connected to the bottom of the accommodating chamber.
Optionally, the structure of the metal receiving chamber of the induction melting furnace further comprises a furnace cover for closing the upper end opening of the receiving chamber.
Optionally, a positioning hole is formed in the bottom of the accommodating chamber, and the spoiler penetrates through the through hole in the furnace cover and then is inserted into the positioning hole of the accommodating chamber.
Optionally, the spoiler is fixedly connected to the furnace cover.
Optionally, the structure of the metal receiving chamber of the induction smelting furnace further comprises a gas passage for communicating the receiving chamber with an external high-pressure gas source.
Optionally, the gas passage is disposed within the stopper rod and is capable of communicating with the fluid passage.
Optionally, the structure of the induction smelting furnace metal containment chamber further comprises means for feeding non-reactive gases to the containment chamber.
Optionally, the structure of the induction smelting furnace metal containment chamber further comprises means for feeding reactive gases to the containment chamber.
Optionally, the furnace body is an insulator furnace body; the spoiler is an insulator spoiler.
Optionally, the plug rod is an insulator plug rod.
The utility model discloses possess following beneficial effect:
in this embodiment, the induction coil generates an alternating current in the metal in the containment chamber as the containment chamber is provided with metal, causing it to heat to a molten state; then under the effect of lorentz force, the molten metal rotates, and the turbulence state that the metal in the containing chamber is upwards or downwards overturned is guided through the spoiler, so that the uniform mixing state of some components in the molten metal can be changed, the dispersion effect of flocculent fibers and particle agglomerates is improved, and the components of the molten metal are more uniform.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the application, are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application. It is obvious that the drawings in the following description are only some embodiments of the application, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:
fig. 1 is a schematic structural view of one embodiment of the structure of the metal receiving chamber of the induction melting furnace according to the present invention;
FIG. 2 is a schematic view of another state of the structure of the metal receiving chamber of the induction melting furnace of FIG. 1;
FIG. 3 is a schematic cross-sectional view of the walls, spoilers and plugs of the induction melting furnace metal containment chamber structure of FIG. 1;
fig. 4 is a schematic structural view of another embodiment of the structure of the metal receiving chamber of the induction melting furnace according to the present application;
fig. 5 is a schematic view of another state of the structure of the metal receiving chamber of the induction melting furnace of fig. 4.
Description of reference numerals: 1. a furnace main body; 2. an induction coil; 3. a spoiler; 4. a first helical protrusion; 5. a protrusion; 6. A furnace bottom; 7. a furnace wall; 8. a liquid discharge channel; 9. a stopper rod; 10. a fluid channel; 11. a furnace cover; 12. a turbulent flow action part; 13. A flange connection; 14. a second helical protrusion; 15. a gas channel.
Detailed Description
The terms of orientation of upper, lower, left, right, front, rear, inner, outer, top, bottom, and the like, which are or may be referred to in this specification, are defined relative to the configuration shown in the drawings, and are relative terms, and thus may be changed correspondingly according to the position and the use state thereof. Therefore, these and other directional terms should not be construed as limiting terms.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. Furthermore, the terms "comprises," "comprising," and any variations thereof, are intended to cover non-exclusive inclusions.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring initially to fig. 1 and 2, an exemplary embodiment of the structure of the metal receiving chamber of an induction smelting furnace according to the present invention is shown. The structure of the metal containing chamber of the induction melting furnace comprises a furnace body 1, an induction coil 2 and a spoiler 3.
The furnace body 1 has a generally barrel shape, and a receiving chamber for receiving metal, such as aluminum alloy, magnesium alloy, etc., is formed in the center thereof. It should be understood that the furnace body 1 may also be designed in other suitable shapes.
The induction coil 2 surrounds the periphery of the furnace wall 7 of the furnace body 1, and when the accommodating chamber is supplied with metal, the induction coil 2 is connected with an external power supply, and generates alternating current in the metal in the accommodating chamber, so that the metal is heated and melted. The molten metal (i.e., the metal in a molten state in the receiving chamber) is rotated in a turbulent flow under the action of lorentz force in the magnetic field generated by the induction coil 2, and some components such as flocculent fibers and particle agglomerates in the molten metal are dispersed to homogenize the components of the molten metal.
The current input by the external power supply to the induction coil 2 is adjustable, such as switching on and off the power supply, changing the direction of the current, changing the frequency of the current, changing the magnitude of the current, and the like. The current input to the induction coil 2 from an external power source is regulated by a controller, for example. The change of the current can cause the corresponding change of the Lorentz force borne by the molten metal, and the flowing direction and the flowing strength of the molten metal in the accommodating chamber can be influenced by the sudden disappearance, the turning, the size change and the like of the Lorentz force, so that the fiber and particle lumps in the molten metal can be scattered, and the components of the molten metal tend to be uniform.
The spoiler 3 is arranged in the middle of the accommodating chamber, the outer peripheral wall of the spoiler comprises a first spiral protrusion 4, the molten metal rotates under the action of Lorentz force and is guided by the first spiral protrusion 4 to turn upwards or downwards, so that the molten metal forms annular longitudinal turbulence, fibers and particle lumps in the molten metal can be scattered, and the components of the molten metal tend to be uniform. It should be understood that the first helical protrusion 4 may be a continuous helical protrusion or may be formed by several separate protrusions in common.
In this embodiment, the inner peripheral wall of the accommodating chamber includes the projection 5, the molten metal is rotated by the lorentz force, and the molten metal flowing through the projection 5 of the inner peripheral wall collides with the projection and forms a turbulent flow, thereby further scattering fiber and particle clusters in the molten metal and making the components of the molten metal uniform. The protrusions 5 of the inner peripheral wall may be regularly or irregularly distributed. In this embodiment, the protrusions of the inner peripheral wall are regularly distributed.
Specifically, the furnace body 1 includes a furnace bottom 6 and a furnace wall 7, and the furnace wall 7 is formed by stacking a plurality of furnace wall 7 units. The space enclosed by the hearth 6 and the furnace walls 7 forms the receiving chamber. The protrusions 5 of the inner circumferential wall are arranged on the inner wall of the furnace wall 7 unit, and the protrusions 5 between adjacent furnace wall 7 units are distributed in a staggered manner, as shown in fig. 3.
Returning now to fig. 1 and 2, the furnace main body 1 further includes a drain passage 8 communicating with the receiving chamber, provided in the furnace bottom 6, for draining the molten metal in the receiving chamber. The structure of the metal receiving chamber of the induction smelting furnace further includes a stopper rod 9 for regulating the flow of the molten metal in the drainage channel 8, blocking the flow of the molten metal from the drainage channel 8 as shown in fig. 1, and letting the molten metal flow from the drainage channel 8 as shown in fig. 2, and of course, regulating the flow rate of the molten metal flowing from the drainage channel 8. In this embodiment, the lower end of the plug rod 9 is movable up and down in the drain channel 8, so that the plug rod 9 can also apply a force to the molten metal in the drain channel 8.
Specifically, the spoiler 3 further includes a fluid passage 10 and a mounting hole. The drainage channel 8 communicates with the receiving chamber via a fluid channel 10. The mounting hole and the liquid discharge channel 8 are positioned on the same vertical axis, the plug rod 9 is inserted in the mounting hole and can move up and down along the axis direction of the mounting hole to adjust the flow of molten metal in the liquid discharge channel 8, and meanwhile, the plug rod 9 applies static pressure when the molten metal enters the mold cavity.
In this embodiment, the furnace main body 1, the spoiler 3, and the plug rod 9 are made of an insulating material or a material having a low electrical conductivity at a temperature below the melting point of the metal to be supplied, such as a zirconium ceramic material, an aluminum titanate ceramic material, a corundum ceramic material, or the like. The eddy current generated by the current introduced into the induction coil 2 can be completely acted on the metal provided in the accommodating chamber, so that the heating efficiency is high, and meanwhile, the stirring effect of the Lorentz force on the molten metal can be strengthened, and the uniformity of the components of the molten metal is further improved.
The structure of the metal receiving chamber of the induction melting furnace of the present embodiment can efficiently heat molten metal and promote the composition of the molten metal to be uniform.
Referring first to fig. 4 and 5, an exemplary embodiment of the structure of the metal receiving chamber of the induction melting furnace according to the present invention is shown. The structure of the metal containing chamber of the induction melting furnace comprises a furnace body 1, an induction coil 2 and a spoiler 3.
The furnace main body 1 has a generally barrel-like shape, and includes a furnace bottom 6 and a furnace wall 7, and a space surrounded by the furnace bottom 6 and the furnace wall 7 forms a containing chamber for containing a metal such as an aluminum alloy, a magnesium alloy, or the like. In this embodiment, the structure of the metal containing chamber of the induction melting furnace further comprises a furnace cover 11, and the furnace cover 11 can close the upper end opening of the containing chamber, so that the containing chamber becomes a closed or corresponding closed space. It should be understood that the furnace body 1 may also be designed in other suitable shapes.
The induction coil 2 surrounds the periphery of the furnace wall 7 of the furnace body 1, and when the accommodating chamber is supplied with metal, the induction coil 2 is connected with an external power supply, and generates alternating current in the metal in the accommodating chamber, so that the metal is heated and melted. The molten metal (i.e., the metal in a molten state in the receiving chamber) is rotated in a turbulent flow under the action of lorentz force in the magnetic field generated by the induction coil 2, and some components such as flocculent fibers and particle agglomerates in the molten metal are dispersed to homogenize the components of the molten metal.
The current input by the external power supply to the induction coil 2 is adjustable, such as switching on and off the power supply, changing the direction of the current, changing the frequency of the current, changing the magnitude of the current, and the like. The current input to the induction coil 2 from an external power source is regulated by a controller, for example. The change of the current can cause the corresponding change of the Lorentz force borne by the molten metal, and the flowing direction and the flowing strength of the molten metal in the accommodating chamber can be influenced by the sudden disappearance, the turning, the size change and the like of the Lorentz force, so that the fiber and particle lumps in the molten metal can be scattered, and the components of the molten metal tend to be uniform.
The spoiler 3 is arranged in the middle of the accommodating chamber, the outer peripheral wall of the spoiler comprises a first spiral protrusion 4, the molten metal rotates under the action of Lorentz force and is guided by the first spiral protrusion 4 to turn upwards or downwards, so that the molten metal forms annular longitudinal turbulence, fibers and particle lumps in the molten metal can be scattered, and the components of the molten metal tend to be uniform. It should be understood that the first helical protrusion 4 may be a continuous helical protrusion or may be formed by several separate protrusions in common.
Specifically, the spoiler 3 includes a spoiler acting portion 12, and the first spiral protrusion 4 is disposed on an outer peripheral wall of the spoiler acting portion 12; the turbulence action part 12 penetrates through a through hole on the furnace cover 11 and then is inserted into a positioning hole in the center of the bottom of the accommodating chamber. The spoiler 3 further comprises a flange connecting portion 13, the upper end of the spoiler acting portion 12 is connected with the flange connecting portion 13 and is fixedly connected with the furnace cover 11 through the flange connecting portion 13.
In this embodiment, the inner peripheral wall of the accommodating chamber includes a second spiral protrusion 14, and the molten metal is rotated under the action of the lorentz force and is guided by the second spiral protrusion 14 to turn upwards or downwards, so that the molten metal forms an annular longitudinal turbulence, and the fibers and particle agglomerates in the molten metal can be scattered, so that the components of the molten metal tend to be uniform. Preferably, the second spiral protrusion is opposite to the first spiral protrusion in rotation direction, and the second spiral protrusion 14 guides the molten metal to turn downward while the first spiral protrusion 4 guides the molten metal to turn upward; the second helical projection 14 directs the molten metal to flip up as the first helical projection 4 directs the molten metal to flip down. Thus, the annular longitudinal turbulence promoted by the first helical projections 4 and the annular longitudinal turbulence promoted by the second helical projections 14 intersect longitudinally, while under the action of the lorentz force, the molten metal at the intersection can form a complex turbulence that further homogenizes the fiber and particle agglomerates in the molten metal. Similarly, the second spiral protrusion 14 may be a continuous spiral protrusion or may be formed by sharing a plurality of separate protrusions.
The furnace body 1 further comprises a liquid discharge channel 8 communicating with the receiving chamber and provided in the furnace bottom 6 for discharging molten metal in the receiving chamber. The structure of the metal receiving chamber of the induction smelting furnace further includes a stopper rod 9 for regulating the flow of the molten metal in the drainage channel 8, blocking the flow of the molten metal from the drainage channel 8 as shown in fig. 4, and letting the molten metal flow from the drainage channel 8 as shown in fig. 5, and of course, regulating the flow rate of the molten metal flowing from the drainage channel 8. In this embodiment, the lower end of the plug rod 9 is movable up and down in the drain channel 8, so that the plug rod 9 can also apply a force to the molten metal in the drain channel 8.
Specifically, the spoiler 3 further includes a fluid passage 10 and a mounting hole. The drainage channel 8 communicates with the receiving chamber via a fluid channel 10. The mounting hole and the liquid discharge channel 8 are positioned on the same vertical axis, the plug rod 9 is inserted in the mounting hole and can move up and down along the axis direction of the mounting hole to adjust the flow of molten metal in the liquid discharge channel 8, and meanwhile, the plug rod 9 applies static pressure when the molten metal enters the mold cavity.
In this embodiment, the structure of the metal receiving chamber of the induction melting furnace further comprises a gas passage 15 for communicating the receiving chamber with an external high-pressure gas source. In particular, said gas channel 15 is arranged inside the stopper rod 9 and can communicate with the fluid channel 10, as shown in fig. 4. The output end of the external high-pressure gas source is connected with the inlet of the gas channel 15 at the upper end of the plug rod 9, and when the gas channel 15 is in the state of being communicated with the fluid channel 10 as shown in fig. 4, non-reactive gas such as inert gas can be input into the accommodating chamber, or reactive gas such as oxygen can be input into the accommodating chamber, or gas, nano metal powder and the like can be input into the accommodating chamber.
Preferably, the fluid channel 10 is arranged close to the bottom wall of the containment chamber. On one hand, the input gas can promote the molten metal to form turbulent flow at the bottom of the containing chamber, and further homogenize fiber and particle agglomerates in the molten metal; on the other hand, bubbles generated by the input gas meet suspended slag inclusions in the floating process, and the slag inclusions are adsorbed on the surfaces of the bubbles and are brought to the liquid level of the molten metal, so that the slag inclusions can be effectively removed; on the other hand, when the gas to be supplied is an inert gas, oxygen, water molecules, etc. above the molten metal surface can be effectively removed.
In an alternative embodiment the structure of the metal receiving chamber of the induction smelting furnace also comprises means for feeding non-reactive gases to the receiving chamber, the output end of which means meets the inlet of the gas channel 15 at the upper end of the stopper rod 9.
In another alternative embodiment the structure of the metal receiving chamber of the induction smelting furnace further comprises means for feeding reactive gases to the receiving chamber, the output end of which meets the inlet of the gas channel 15 at the upper end of the stopper rod 9.
In this embodiment, the furnace main body 1, the spoiler 3, the plug rod 9, and the furnace cover 11 are made of an insulating material or a material having a low electrical conductivity at a temperature below the melting point of the metal to be supplied, such as a zirconium ceramic material, an aluminum titanate ceramic material, a corundum ceramic material, or the like. The eddy current generated by the current introduced into the induction coil 2 can be completely acted on the metal provided in the accommodating chamber, so that the heating efficiency is high, and meanwhile, the stirring effect of the Lorentz force on the molten metal can be strengthened, and the uniformity of the components of the molten metal is further improved.
The structure of the metal receiving chamber of the induction melting furnace of the present embodiment can efficiently heat molten metal and promote the composition of the molten metal to be uniform.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. A structure of a metal receiving chamber of an induction melting furnace, comprising:
a furnace main body having a receiving chamber for receiving a metal;
an induction coil for generating an alternating current in the metal within the containment chamber when the containment chamber is provided with metal;
a spoiler having an outer circumferential wall including a first spiral protrusion for guiding the metal in the receiving chamber to be turned upward or downward when the metal provided in the receiving chamber is in a molten state.
2. The structure of the metal receiving chamber of an induction smelting furnace according to claim 1, characterized by: the inner peripheral wall of the accommodating chamber comprises a second spiral protrusion used for guiding the metal in the accommodating chamber to turn over under the action of Lorentz force when the metal provided by the accommodating chamber is in a molten state; the second spiral protrusion rotates in the opposite direction to the first spiral protrusion.
3. The structure of the metal receiving chamber of an induction smelting furnace according to claim 1, characterized by: the inside peripheral wall of the containing chamber contains protrusions for dispersing fiber and/or particle agglomerates in the metal flowing therethrough when the metal supplied to the containing chamber is in a molten state.
4. The structure of the metal receiving chamber of an induction smelting furnace according to claim 3, characterized by: the protrusions are distributed in a staggered manner in the horizontal direction.
5. The structure of the metal receiving chamber of an induction smelting furnace according to claim 4, characterized by: the furnace body comprises a furnace bottom and a furnace wall, and the furnace wall is formed by laminating a plurality of furnace wall units; the space surrounded by the hearth and the furnace walls forms the containment chamber.
6. The structure of the metal receiving chamber of an induction smelting furnace according to claim 1, characterized by: the furnace main body comprises a liquid discharge channel communicated with the accommodating chamber and used for discharging molten metal in the accommodating chamber; the structure of the metal receiving chamber of the induction smelting furnace further comprises a stopper rod for regulating the flow of metal in a molten state in the tapping channel.
7. The structure of the metal receiving chamber of an induction smelting furnace according to claim 6, characterized by: the spoiler comprises a fluid channel, and the liquid discharge channel is communicated with the accommodating chamber through the fluid channel; the plug rod is inserted in the mounting hole and can move along the axis direction of the mounting hole to adjust the flow of the metal in the molten state in the liquid discharge channel, and meanwhile, the plug rod applies static pressure when the metal in the molten state enters the cavity of the mold.
8. The structure of the metal receiving chamber of an induction smelting furnace according to claim 1, characterized by: the furnace cover is used for closing the upper end opening of the accommodating chamber.
9. The structure of the metal receiving chamber of an induction smelting furnace according to claim 1, characterized by: the gas channel is used for communicating the accommodating chamber with an external high-pressure gas source.
10. The structure of the metal receiving chamber of the induction smelting furnace according to any one of claims 1 to 9, characterized by: the structure of the metal containing chamber is the structure of an insulator metal containing chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020598998.0U CN211977565U (en) | 2020-04-20 | 2020-04-20 | Structure of metal containing chamber of induction melting furnace |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020598998.0U CN211977565U (en) | 2020-04-20 | 2020-04-20 | Structure of metal containing chamber of induction melting furnace |
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| CN211977565U true CN211977565U (en) | 2020-11-20 |
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| CN202020598998.0U Expired - Fee Related CN211977565U (en) | 2020-04-20 | 2020-04-20 | Structure of metal containing chamber of induction melting furnace |
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- 2020-04-20 CN CN202020598998.0U patent/CN211977565U/en not_active Expired - Fee Related
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