CN111349795A - Vacuum melting and maintaining furnace - Google Patents
Vacuum melting and maintaining furnace Download PDFInfo
- Publication number
- CN111349795A CN111349795A CN202010371964.2A CN202010371964A CN111349795A CN 111349795 A CN111349795 A CN 111349795A CN 202010371964 A CN202010371964 A CN 202010371964A CN 111349795 A CN111349795 A CN 111349795A
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- China
- Prior art keywords
- furnace body
- furnace
- vacuum
- aluminum liquid
- connecting piece
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- 238000002844 melting Methods 0.000 title claims abstract description 17
- 230000008018 melting Effects 0.000 title claims abstract description 17
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 41
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 41
- 239000007788 liquid Substances 0.000 claims abstract description 27
- 238000007789 sealing Methods 0.000 claims abstract description 22
- 239000011261 inert gas Substances 0.000 claims abstract description 19
- 238000010438 heat treatment Methods 0.000 claims abstract description 17
- 239000002994 raw material Substances 0.000 claims abstract description 10
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 9
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 9
- 239000007789 gas Substances 0.000 claims description 6
- 230000001681 protective effect Effects 0.000 claims description 3
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims 2
- 238000005266 casting Methods 0.000 abstract description 13
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract description 12
- 239000001257 hydrogen Substances 0.000 abstract description 12
- 229910052739 hydrogen Inorganic materials 0.000 abstract description 12
- 238000000034 method Methods 0.000 abstract description 7
- 238000010521 absorption reaction Methods 0.000 abstract description 6
- 229910000838 Al alloy Inorganic materials 0.000 abstract description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 4
- 239000001301 oxygen Substances 0.000 abstract description 4
- 229910052760 oxygen Inorganic materials 0.000 abstract description 4
- 239000002893 slag Substances 0.000 abstract description 4
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 238000005086 pumping Methods 0.000 description 4
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 238000003723 Smelting Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 239000011819 refractory material Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 239000011094 fiberboard Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000013077 target material Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B21/00—Obtaining aluminium
- C22B21/0084—Obtaining aluminium melting and handling molten aluminium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B21/00—Obtaining aluminium
- C22B21/06—Obtaining aluminium refining
- C22B21/068—Obtaining aluminium refining handling in vacuum
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The invention discloses a vacuum melting furnace, which comprises a furnace body, a heating system for heating aluminum liquid in the furnace body and a tilting system for driving the furnace body to tilt, wherein the furnace body is provided with a raw material inlet and an aluminum liquid outlet, the raw material inlet is provided with an openable inlet sealing device, the aluminum liquid outlet is provided with an openable outlet sealing device, the furnace body is also provided with a vacuumizing port, and the vacuumizing port is connected with a vacuum generator. The invention utilizes the internal vacuum characteristic to automatically separate out hydrogen in the aluminum liquid, reduces the generation of slag due to low oxygen content in the aluminum liquid, provides high-quality aluminum liquid for aluminum alloy casting and increases the yield; meanwhile, inert gas can be introduced in the casting process, so that hydrogen absorption of the aluminum liquid in the flowing process is reduced.
Description
Technical Field
The invention relates to the field of aluminum smelting, in particular to a vacuum melting and maintaining furnace.
Background
Before casting aluminum alloy, aluminum is required to be melted into molten aluminum, at present, the aluminum is melted mainly through a melting and holding furnace, oxidation and hydrogen absorption phenomena of the aluminum occur in the process, and the quality of the molten aluminum directly determines the quality of an ingot, particularly a high-purity target material, a high-strength hard alloy and the like. How to reduce the oxidation of aluminum and the generation of hydrogen absorption is a technical problem to be solved urgently in the field.
Disclosure of Invention
The invention aims to provide a vacuum melting and maintaining furnace, which utilizes the internal vacuum characteristic to automatically separate out hydrogen in aluminum liquid, reduces the generation of slag due to low oxygen content in the furnace, provides high-quality aluminum liquid for aluminum alloy casting and increases the yield; meanwhile, inert gas can be introduced in the casting process, so that hydrogen absorption of the aluminum liquid in the flowing process is reduced.
In order to achieve the purpose, the invention adopts the technical scheme that: a vacuum melting furnace comprises a furnace body, a heating system and a tilting system, wherein the heating system is used for heating aluminum liquid in the furnace body, the tilting system is used for driving the furnace body to tilt, the furnace body is provided with a raw material inlet and an aluminum liquid outlet, the raw material inlet is provided with an openable inlet sealing device, the aluminum liquid outlet is provided with an openable outlet sealing device, the furnace body is further provided with a vacuumizing port, and the vacuumizing port is connected with a vacuum generator.
Further, the furnace body comprises a cylindrical barrel, and the inlet sealing device is a sealing end cover which is rotatably connected to one end of the cylindrical barrel.
Further, the furnace body comprises a cylindrical barrel, a conical barrel communicated with the cylindrical barrel is arranged on the side wall of the cylindrical barrel, the conical barrel is used as the aluminum liquid outlet, and the outlet sealing device is a manual sealing head.
Further, the furnace body includes cylindrical barrel, cylindrical barrel's one end is equipped with spherical head, the evacuation mouth is located on the spherical head.
Furthermore, heating system includes the elema, the elema part is located inside the furnace body, the part of elema is worn to establish in the mounting hole of furnace body lateral wall and be equipped with protective case between the two.
Furthermore, the heating system also comprises a thermocouple for detecting the furnace temperature in the furnace body.
Further, the tilting system includes base, first coupling assembling, second coupling assembling and pneumatic cylinder, first coupling assembling including connect in connecting piece A on the furnace body with connect in connecting piece B on the base, connecting piece A with the rotatable connection of connecting piece B, second coupling assembling including connect in connecting piece C on the furnace body with connect in connecting piece D on the base, connecting piece C with the jar pole of pneumatic cylinder is connected, connecting piece D with the rotatable connection of cylinder body of pneumatic cylinder.
Further, the base comprises a bottom plate and a supporting seat arranged on the bottom plate, the connecting piece B is arranged on the supporting seat, and the connecting piece D is arranged on the bottom plate.
Further, the furnace body is also provided with an inert gas inlet, and the inert gas inlet is connected with an inert gas source.
Further, the vacuum pumping port and the inert gas inlet are the same gas port, and the vacuum generator and the inert gas source are connected to the gas port in parallel.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages: the vacuum melting and holding furnace disclosed by the invention is melted and held in a vacuum environment, hydrogen in aluminum liquid is automatically separated out by utilizing the vacuum characteristic in the vacuum melting and holding furnace, the generation of hydrogen absorption is reduced, the oxidation of aluminum is reduced and the generation of slag is reduced due to the low oxygen content in the vacuum melting and holding furnace, meanwhile, the slag in the aluminum can float out, extra hydrogen removal equipment is not needed in the casting process, the process is reduced, especially, the length of a launder is greatly shortened, and the investment of an equipment production line is reduced. High-quality molten aluminum is provided for aluminum alloy casting, and the yield is increased; meanwhile, inert gas can be introduced in the casting process, so that hydrogen absorption of the aluminum liquid in the flowing process is reduced.
Drawings
FIG. 1 is a front view of a vacuum melter as disclosed herein;
FIG. 2 is a side view of the vacuum melter of the present disclosure;
FIG. 3 is a side cross-sectional view of the vacuum melter of the present disclosure.
Wherein, 11, a furnace body; 12. an inlet seal; 13. an outlet sealing device; 14. a conical cylinder; 15. a spherical end enclosure; 20. a vacuum generator; 31. a silicon carbide rod; 32. protecting the sleeve; 33. a thermocouple; 41. an oil cylinder; 42. a connecting piece A; 43. a connecting piece B; 44. a connecting member C; 45. a connecting piece D; 46. a base plate; 47. and (4) supporting the base.
Detailed Description
The invention is further described with reference to the accompanying drawings and examples:
example one
Referring to fig. 1 to 3, as shown in the drawings, a vacuum melting furnace comprises a furnace body 11, a heating system for heating aluminum liquid in the furnace body 11, and a tilting system for driving the furnace body 11 to tilt, wherein the furnace body 11 is provided with a raw material inlet and an aluminum liquid outlet, the raw material inlet is provided with an openable inlet sealing device 12, the aluminum liquid outlet is provided with an openable outlet sealing device 13, the furnace body 11 is further provided with a vacuum pumping port, and the vacuum pumping port is connected with a vacuum generator 20.
In the preferred embodiment of the present embodiment, the furnace body 11 comprises a cylindrical barrel, and the inlet sealing device 12 is a sealing end cap rotatably connected to one end of the cylindrical barrel.
In the preferred embodiment of this embodiment, the furnace body 11 includes a cylindrical barrel, a conical barrel 14 communicated with the cylindrical barrel is disposed on a side wall of the cylindrical barrel, the conical barrel 14 serves as the outlet for the molten aluminum, and the outlet sealing device 13 is a manual sealing head.
In the preferred embodiment of this embodiment, the furnace body 11 includes a cylindrical barrel, and one end of the cylindrical barrel is provided with a spherical head 15, and the vacuum-pumping port is provided on the spherical head 15.
In the preferred embodiment of the present embodiment, the heating system includes a silicon carbide rod 31, a portion of the silicon carbide rod 31 is located inside the furnace body 11, a portion of the silicon carbide rod 31 is inserted into the mounting hole on the side wall of the furnace body 11, and a protective sleeve 32 is disposed between the silicon carbide rod 31 and the mounting hole.
In the preferred embodiment of the present embodiment, the heating system further includes a thermocouple 33 for detecting the temperature of the furnace inside the furnace body 11.
In the preferred embodiment of the present invention, the tilting system includes a base, a first connecting assembly, a second connecting assembly and the hydraulic cylinder 41, the first connecting assembly includes a connecting member a42 connected to the furnace body 11 and a connecting member B43 connected to the base, the connecting member a42 is rotatably connected to the connecting member B43, the second connecting assembly includes a connecting member C44 connected to the furnace body 11 and a connecting member D45 connected to the base, the connecting member C44 is connected to the cylinder rod of the hydraulic cylinder 41, and the connecting member D45 is rotatably connected to the cylinder body of the hydraulic cylinder 41.
In the preferred embodiment of this embodiment, the base includes a bottom plate 46 and a supporting seat 47 disposed on the bottom plate 46, the connecting member B43 is disposed on the supporting seat 47, and the connecting member D45 is disposed on the bottom plate 46.
In the preferred embodiment of this embodiment, the furnace body 11 is further provided with an inert gas inlet, and the inert gas inlet is connected with an inert gas source (not shown in the figure).
In a preferred embodiment of this embodiment, the vacuum port and the inert gas inlet are the same gas port, and the vacuum generator 20 and the inert gas source are connected in parallel to the gas port.
In the above, a cylindrical cavity formed by pouring refractory material is arranged in the cylinder body. The refractory material in the cylinder body consists of a non-stick aluminum casting material, a heat preservation casting material and an aluminum silicate fiber board. The vacuum generator consists of a vacuum pump, a filtering device and a stainless steel pipeline. The electric control system is controlled by a PLC. The temperature control system collects thermocouple signals installed on the cylinder body for control. The control system comprises a mechanical control part and a temperature control part. The barrel is of a cylindrical steel structure, one end of the barrel is welded with a sealing flange with a groove, and the other end of the barrel is welded with a spherical seal head.
The specific implementation process of the invention is as follows: opening the end sealing cover, adding an aluminum raw material into the cylinder, closing the end sealing cover, starting a vacuum generator, and vacuumizing the cylinder; starting an electric control system, heating the raw materials, and adjusting the temperature of the aluminum liquid to a temperature suitable for casting after the aluminum liquid is completely melted; and after casting is started, starting the tilting system, simultaneously flushing inert gas, opening an aluminum liquid outlet, pouring out the aluminum liquid according to a certain flow rate, and casting to complete the whole process.
As can be seen from the above description: the invention carries out smelting and heat preservation in a vacuum environment, reduces the contact between aluminum liquid and oxygen and reduces slagging; meanwhile, due to the existence of vacuum, the hydrogen automatically overflows, and the aim of removing hydrogen is fulfilled.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A vacuum melting furnace comprises a furnace body, a heating system and a tilting system, wherein the heating system is used for heating aluminum liquid in the furnace body, the tilting system is used for driving the furnace body to tilt, the furnace body is provided with a raw material inlet and an aluminum liquid outlet, the raw material inlet is provided with an openable inlet sealing device, and the aluminum liquid outlet is provided with an openable outlet sealing device.
2. The vacuum melter of claim 1 wherein the furnace body comprises a cylindrical barrel and the inlet seal is a seal end cap rotatably attached to one end of the cylindrical barrel.
3. The vacuum melting and maintaining furnace of claim 1, wherein the furnace body comprises a cylindrical barrel, the side wall of the cylindrical barrel is provided with a conical barrel communicated with the cylindrical barrel, the conical barrel is used as the molten aluminum outlet, and the outlet sealing device is a manual sealing head.
4. The vacuum melting furnace of claim 1, wherein the furnace body comprises a cylindrical barrel, one end of the cylindrical barrel is provided with a spherical head, and the vacuumizing port is arranged on the spherical head.
5. The vacuum melting furnace of claim 1, wherein the heating system comprises a silicon carbide rod, the silicon carbide rod is partially positioned inside the furnace body, the silicon carbide rod is partially inserted into the mounting hole on the side wall of the furnace body, and a protective sleeve is arranged between the silicon carbide rod and the mounting hole.
6. The vacuum melter of claim 5 wherein the heating system further comprises a thermocouple for sensing the temperature of the furnace interior of the furnace body.
7. The vacuum melting furnace of claim 1, wherein the tilting system comprises a base, a first connecting assembly, a second connecting assembly and a hydraulic cylinder, the first connecting assembly comprises a connecting piece A connected to the furnace body and a connecting piece B connected to the base, the connecting piece A is rotatably connected with the connecting piece B, the second connecting assembly comprises a connecting piece C connected to the furnace body and a connecting piece D connected to the base, the connecting piece C is connected with a cylinder rod of the hydraulic cylinder, and the connecting piece D is rotatably connected with a cylinder body of the hydraulic cylinder.
8. The vacuum melter of claim 7 wherein the base comprises a base plate and a support pedestal disposed on the base plate, wherein the connector B is disposed on the support pedestal and the connector D is disposed on the base plate.
9. The vacuum melting and maintaining furnace of claim 1, wherein the furnace body is further provided with an inert gas inlet, and the inert gas inlet is connected with an inert gas source.
10. The vacuum melter of claim 9, wherein the evacuation port and the inert gas inlet are the same gas port, and the vacuum generator and the inert gas source are connected in parallel to the gas port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010371964.2A CN111349795A (en) | 2020-05-06 | 2020-05-06 | Vacuum melting and maintaining furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010371964.2A CN111349795A (en) | 2020-05-06 | 2020-05-06 | Vacuum melting and maintaining furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111349795A true CN111349795A (en) | 2020-06-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010371964.2A Pending CN111349795A (en) | 2020-05-06 | 2020-05-06 | Vacuum melting and maintaining furnace |
Country Status (1)
| Country | Link |
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| CN (1) | CN111349795A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201787812U (en) * | 2010-09-03 | 2011-04-06 | 游述怀 | Hydraulic tilting type circular aluminum liquid smelting thermal insulation furnace |
| CN209279654U (en) * | 2018-11-15 | 2019-08-20 | 苏州中阳热能科技有限公司 | It is a kind of that the vacuum induction melting furnace equipment without drop vertical casting can be achieved |
| CN110701906A (en) * | 2019-11-14 | 2020-01-17 | 苏州中联众信热能科技有限公司 | Double-combustion-system melting and protecting integrated furnace |
| CN211999862U (en) * | 2020-05-06 | 2020-11-24 | 苏州中联众信热能科技有限公司 | Vacuum melting and maintaining furnace |
-
2020
- 2020-05-06 CN CN202010371964.2A patent/CN111349795A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201787812U (en) * | 2010-09-03 | 2011-04-06 | 游述怀 | Hydraulic tilting type circular aluminum liquid smelting thermal insulation furnace |
| CN209279654U (en) * | 2018-11-15 | 2019-08-20 | 苏州中阳热能科技有限公司 | It is a kind of that the vacuum induction melting furnace equipment without drop vertical casting can be achieved |
| CN110701906A (en) * | 2019-11-14 | 2020-01-17 | 苏州中联众信热能科技有限公司 | Double-combustion-system melting and protecting integrated furnace |
| CN211999862U (en) * | 2020-05-06 | 2020-11-24 | 苏州中联众信热能科技有限公司 | Vacuum melting and maintaining furnace |
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