CN206556421U - A kind of aluminium alloy high-efficiency vacuum smelting apparatus - Google Patents
A kind of aluminium alloy high-efficiency vacuum smelting apparatus Download PDFInfo
- Publication number
- CN206556421U CN206556421U CN201720110926.5U CN201720110926U CN206556421U CN 206556421 U CN206556421 U CN 206556421U CN 201720110926 U CN201720110926 U CN 201720110926U CN 206556421 U CN206556421 U CN 206556421U
- Authority
- CN
- China
- Prior art keywords
- bell
- heater
- aluminium alloy
- liquid level
- smelting apparatus
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 36
- 238000003723 Smelting Methods 0.000 title claims abstract description 26
- 239000007788 liquid Substances 0.000 claims abstract description 42
- 229910052751 metal Inorganic materials 0.000 claims abstract description 18
- 239000002184 metal Substances 0.000 claims abstract description 18
- 239000000498 cooling water Substances 0.000 claims abstract description 15
- 238000007789 sealing Methods 0.000 claims abstract description 11
- 239000011449 brick Substances 0.000 claims abstract description 10
- 238000009413 insulation Methods 0.000 claims abstract description 5
- 239000010425 asbestos Substances 0.000 claims abstract description 4
- 229910052895 riebeckite Inorganic materials 0.000 claims abstract description 4
- 238000001816 cooling Methods 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 230000007704 transition Effects 0.000 claims description 5
- 238000005452 bending Methods 0.000 claims description 3
- 230000003467 diminishing effect Effects 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims 1
- 229910052782 aluminium Inorganic materials 0.000 abstract description 11
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 11
- 239000004411 aluminium Substances 0.000 abstract description 10
- 238000002844 melting Methods 0.000 abstract description 10
- 230000008018 melting Effects 0.000 abstract description 10
- 230000003647 oxidation Effects 0.000 abstract description 4
- 238000007254 oxidation reaction Methods 0.000 abstract description 4
- 229910045601 alloy Inorganic materials 0.000 description 4
- 239000000956 alloy Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000012535 impurity Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000007670 refining Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Landscapes
- Vertical, Hearth, Or Arc Furnaces (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The utility model discloses a kind of aluminium alloy high-efficiency vacuum smelting apparatus, including body of heater, bell and lamina tecti, sidewall of the furnace body is followed successively by metal outer, asbestos heat-insulation layer, cooling water pipe, fire brick layer, resistive heater and body of heater internal layer from outside to inside, the bell is installed above body of heater, sealing gasket is provided between the face that bell and body of heater are in contact, three holes that position highly different is provided with the wall of bell side, wherein grafting airway tube is distinguished in the hole of topmost and foot, and the hole at middle part is used to install butterfly valve.It is provided with above bell above charging aperture, charging aperture covered with lamina tecti, bottom of furnace body position is provided with drain pipe, for the liquid aluminium alloy export smelting apparatus under molten condition to be used to be cast as product, drain pipe exit is provided with chock plug.The utility model can avoid contact of the aluminium alloy melt with air, reduce the amount of oxidation loss of aluminium, and by setting butterfly valve, can be during melting to melting furnace charge.
Description
Technical field
The utility model belongs to metal material processing technical field, more particularly to a kind of aluminium alloy high-efficiency vacuum melting dress
Put.
Background technology
The chemism of aluminium is very strong, during aluminium alloy smelting, always because of many factors such as oxidation and operation, causes
It, is traditionally all referred to as scaling loss, it not only have lost substantial amounts of aluminium in vain, and cause many by suitable aluminium loss
Energy loss, the quality of aluminium liquid can also be influenceed by adding the generation of a large amount of melting oxides, and various unfavorable knots are brought to aluminum products
Really.In current production process, the preparation of aluminium alloy generally uses well formula resistance furnace.The equipment is simple to operation, but by
It can not completely cut off the contact of outside air and aluminium solution completely in flux, and because whole operation is completed under atmospheric environment,
It is inevitable to cause alloy to refine body exposure in atmosphere in processes such as stirring, Pan Zhu, cause the scaling loss of aluminium, reduce alloy mass；
And because melting or cast instrument and aluminium liquid are directly contacted, it is easy to contaminated melt.
Vacuum melting method is produced with modern age high-purity and ultra-high purity metal and alloy development.Carry out in a vacuum
During melting, because molten bath is not contacted with air or burning waste gas and clinker, the contamination of these factors can be avoided.Vacuum bar
Part more can also fully exclude than other method of smelting be originally present in some of metal impurity in itself.In addition, vacuum is molten
The pressure of system is very low during refining, and all reactions for having gaseous products to produce in molten bath can be played a driving role, such as degassing,
Impurity volatilizees and certain form of deoxidation.
When therefore producing aluminium alloy pot using vacuum resistance furnace, contact of the aluminium alloy melt with air can be avoided, is reduced
The amount of oxidation loss of aluminium, is avoided that during refining agent protection and brings pollution of other elements to melt into, can accurately control again
Al alloy component, obtains the high-quality alloy pot of high-purity.
Utility model content
The purpose of this utility model is to provide a kind of aluminium alloy high-efficiency vacuum smelting apparatus, and the technical scheme of use is：
A kind of aluminium alloy high-efficiency vacuum smelting apparatus, including body of heater, bell and lamina tecti, the body of heater are rectangular parallelepiped structure, body of heater side
Wall is followed successively by metal outer, asbestos heat-insulation layer, cooling water pipe, fire brick layer, resistive heater and body of heater internal layer, institute from outside to inside
State body of heater internal layer directly to contact with metal bath, the resistive heater is arranged between sidewall refractory brick layer and body of heater internal layer,
It is lined with below the body of heater above refractory brick, body of heater and the bell is installed；The bell is also rectangular parallelepiped structure, cuboid stove
It is provided with high on sealing gasket, bell side wall between a line of lid and body of heater hinge connection, the face that bell and body of heater are in contact
The hole difference grafting airway tube in three holes that the different position of degree is provided with, wherein topmost and foot, described two airway tubes
On be separately installed with stop valve and lower stop valve and transition connection flexible pipe, two air guide pipe ends merge into an airway tube,
And connected with cooling tube, the cooling pipe end connection vavuum pump, the hole at middle part is used to install butterfly valve, the space quilt of the bell
Butterfly valve core be divided into above and below two parts, be provided with above charging aperture, the charging aperture covered with the top cover above the bell
Air admission hole is also provided with plate, the bell, for the air in air to be imported in bell, the air pressure in balance bell, air inlet
Plug is plugged with hole；Through hole is drilled with the lamina tecti, the bolt for being used for and being fixed on the bell upper surface coordinates, and works as nut
The fixation of cover plate is realized when screwing on bolt head, the bottom of furnace body position is provided with drain pipe, for by the liquid under molten condition
State aluminium alloy export smelting apparatus is used to be cast as product, and the drain pipe exit is provided with chock plug.
Further, liquid level limitation bar and lower liquid level limitation bar, the upper liquid level limit are additionally provided with the sidewall of the furnace body
Bar processed is arranged close to body of heater tip position, and the lower liquid level limitation bar is arranged close to bottom of furnace body position, upper liquid level limitation
Bar and lower liquid level limitation bar are connected by wire with power supply box respectively, and power supply, red light and green light are provided with the power supply box, red
Lamp, power supply and upper liquid level limitation bar constitute a loop, when the molten metal in body of heater encounters upper liquid level limitation bar, the red light
Bright, green light, power supply and lower liquid level limitation bar constitute a loop, when the molten metal in body of heater encounters lower liquid level limitation bar, institute
State green light.
Further, the height of the water inlet pipe of the cooling water pipe is less than outlet pipe so that cooling water is formed by running water
Pressure flow to eminence from the lower of smelting furnace.
Further, heat-resisting rubber is provided between the hole wall in the hole on the wall of the bell side and the airway tube or butterfly valve rotating shaft
Glue, for sealing bell side wall.
Further, there is heat resistant rubber at the edge of the butterfly valve.
Further, it is designed to from top to bottom cut to reduce the charging aperture above heat losses during charging, the bell
The diminishing structure in face.
Further, it is fixed at least 3, the bolt of the bell upper surface.
Further, sealing ring is provided between the bell and the lamina tecti.
Further, the cooling tube is into bending helical form, and is immersed in cooling water.
Further, gasket coating is scribbled at layer gap in the drain pipe and the body of heater.
The beneficial effects of the utility model are：
1st, the utility model can realize the production of stability and high efficiency.First, it is to avoid contact of the aluminium alloy melt with air, reduction
The amount of oxidation loss of aluminium, while avoiding bringing pollution of other elements to melt into during refining agent protection, improves aluminium alloy
Utilization rate, the aluminium alloy finished product quality of acquisition is close, and bubble and impurity content are few；Second, stove need not be closed during charging
Cooling is closed, production efficiency can be drastically increased during melting to melting furnace charge；3rd, only needed during cast
The chock plug in drain pipe exit is opened, allows molten metal to flow into mould, easy to operate, safety coefficient is high, is controlled beneficial to management
System, has saved personnel and equipment control cost.
2nd, the utility model can realize high efficiency of energy.The utility model sidewall of the furnace body uses the material system of excellent thermal insulation performance
Into in vacuum state above body of heater inner metal liquid, thermal conductivity is poor, reduces scattering and disappearing for heat, reduces energy resource consumption, and heating
Resistance wire presses close to body of heater internal layer, adds heating work efficiency.
3rd, the utility model is by setting upper liquid level limitation bar and lower liquid level limitation bar to understand the liquid level in smelting furnace in time
Whether height is safe, it is to avoid pours transition and causes body of heater inner metal liquid very few and unloaded, also prevent overcharge and cause safety
Accident.
4th, the utility model is additionally provided with cooling water system, and the feelings to quickly being cooled down in body of heater are needed after the completion of body of heater work
Under condition, cooling water is opened, its cooling velocity can reach 3 times of natural cooling speed, when changing stove or reloading operation, greatly subtract
Lack the time of middle wait, can further improve production efficiency.
Brief description of the drawings
The Figure of description for constituting the part of the application is used for providing further understanding to of the present utility model, this practicality
New schematic description and description is used to explain the utility model, does not constitute to improper restriction of the present utility model.
In the accompanying drawings：
Fig. 1 is structural representation of the present utility model.
Embodiment
As shown in figure 1, a kind of aluminium alloy high-efficiency vacuum smelting apparatus, including body of heater, bell 2 and lamina tecti 3.Body of heater is length
Cube structure, sidewall of the furnace body be followed successively by from outside to inside metal outer 1, asbestos heat-insulation layer 5, cooling water pipe 10, fire brick layer 4, plus
Hot water radiation wire 28 and body of heater internal layer 6.Body of heater internal layer 6 is directly contacted with metal bath, and resistive heater 28 is arranged on sidewall refractory
Between brick layer 4 and body of heater internal layer 6, refractory brick 33 is lined with below body of heater.Liquid level limitation bar 29 is additionally provided with sidewall of the furnace body with
Liquid level limits bar 30, and upper liquid level limitation bar 29 is arranged close to body of heater tip position, and the lower liquid level limitation bar 30, which is arranged on, to be leaned on
Nearly bottom of furnace body position.Upper liquid level limitation bar 29 and lower liquid level limitation bar 30 are connected by wire 32 with power supply box 31 respectively, electricity
Power supply, red light and green light are installed on source case 31.Red light, power supply and upper liquid level limitation bar 29 constitute a loop, when in body of heater
Molten metal when encountering upper liquid level limitation bar, the when red；Green light, power supply and lower liquid level limitation bar 30 constitute a loop,
When the molten metal in body of heater encounters lower liquid level limitation bar, the green light.The bell 2 is installed above body of heater.Bell 2
For rectangular parallelepiped structure, a line and body of heater hinge 8 of cuboid bell 2 are connected, are provided between the face that bell 2 and body of heater are in contact
Sealing gasket 9.Grafting is led respectively for three holes that position highly different is provided with the wall of bell side, the wherein hole of topmost and foot
Stop valve 17 and lower stop valve 18 and transition connection flexible pipe 19, two air guides are separately installed with tracheae 20, two airway tubes
Pipe end merges into an airway tube, and is connected with cooling tube 21, and cooling tube 21 is immersed in cooling water 22 into bending helical form
In.The end of cooling tube 21 connects vavuum pump 23.The hole at middle part is used for hole wall and the air guide for installing the hole on butterfly valve 7, bell side wall
Heat resistant rubber 16 is provided between the rotating shaft of pipe 20 or butterfly valve 7, for sealing bell side wall.There are heat resistant rubber, stove in the edge of butterfly valve 7
The space of lid 2 by the valve element of butterfly valve 7 be divided into above and below two parts.The top of bell 2 is provided with charging aperture 24, hot during charging in order to reduce
Amount is lost in, and the charging aperture 24 of the top of bell 2 is designed to the diminishing structure in section from top to bottom.The top of charging aperture 24 covered with
The lamina tecti 3, is provided with sealing ring 25 between bell 2 and lamina tecti 3.Air admission hole 34 is also provided with bell 2, for by air
Air import in bell, the air pressure in balance bell is plugged with plug 35 in air admission hole 34.Through hole is drilled with lamina tecti 3, is used for
Coordinate with the bolt 27 for being fixed on the bell upper surface, the fixation of lamina tecti 3, spiral shell are realized when nut 26 screws on 27, bolt
At least 3, bolt 27.Bottom of furnace body position, which is provided with drain pipe 11, drain pipe 11 and the gap of body of heater internal layer 6, scribbles sealing painting
Material 13, for the liquid aluminium alloy export smelting apparatus under molten condition to be used to be cast as product, the drain pipe exit
Provided with chock plug 12.The height of the water inlet pipe 14 of cooling water pipe 10 is less than outlet pipe 15 so that the pressure that cooling water is formed by running water
Power flows to eminence from the lower of smelting furnace.
During use, bell is shut, lamina tecti is fixed on bell.Stop valve is closed in holding, and lower stop valve is beaten
Open, butterfly valve core face turns to vertical direction.Resistive heater and vavuum pump are opened, is started to the Al alloy powder or block in body of heater
Heated and vacuumized.After aluminum alloy melting is into liquid, opens chock plug and carry out pouring into pot.
When needing addition aluminium alloy, butterfly valve core face is gone into horizontal direction, now spool edge and bell madial wall
Laminating, the space of bell by the valve element of butterfly valve be divided into above and below two independent sectors.Then plug 35 is extracted so that the sky in air
Gas enters the air pressure of segment space and environment on segment space on bell, balance bell.Then lamina tecti is opened, by Al alloy block
Segment space on bell, then top cover plate are put into, lamina tecti is tightened.Then plug 35 beyond the Great Wall, stop valve is opened in unlatching
Beginning vacuumizes to segment space on bell.Vacuumize after finishing, rotate butterfly valve so that valve element face goes to vertical direction, aluminium alloy
Block is to fall among body of heater aluminium alloy, finally closes upper stop valve.
When needing to being cleaned in body of heater, airway tube is connected in flexible pipe 19 from transition and extracted, then bell is opened with loop wheel machine,
Body of heater is cleaned.
Claims (10)
1. a kind of aluminium alloy high-efficiency vacuum smelting apparatus, it is characterised in that including body of heater, bell and lamina tecti, the body of heater is
Rectangular parallelepiped structure, sidewall of the furnace body is followed successively by metal outer, asbestos heat-insulation layer, cooling water pipe, fire brick layer, heating electricity from outside to inside
Silk and body of heater internal layer are hindered, the body of heater internal layer is directly contacted with metal bath, and the resistive heater is arranged on sidewall refractory brick
Between layer and body of heater internal layer, it is lined with below the body of heater above refractory brick, body of heater and the bell is installed；The bell is also length
Sealing gasket is provided between cube structure, a line of cuboid bell and body of heater hinge connection, the face that bell and body of heater are in contact,
The hole difference grafting air guide in three holes that position highly different is provided with the wall of the bell side, wherein topmost and foot
Stop valve and lower stop valve and transition connection flexible pipe, two air guide pipe ends are separately installed with pipe, described two airway tubes
An airway tube is merged into, and is connected with cooling tube, the cooling pipe end connection vavuum pump, the hole at middle part is used to install butterfly
Valve, the space of the bell by butterfly valve core be divided into above and below two parts, be provided with charging aperture, the charging aperture above the bell
Top is also provided with air admission hole covered with the lamina tecti on the bell, for the air in air to be imported in bell, balance
Plug is plugged with air pressure in bell, air admission hole；Through hole is drilled with the lamina tecti, is used for and is fixed on the bell upper surface
Bolt coordinate, the fixation of cover plate is realized when nut screws on bolt head, the bottom of furnace body position is provided with drain pipe, is used for
Liquid aluminium alloy export smelting apparatus under molten condition is used to be cast as product, the drain pipe exit is provided with chock plug.
2. a kind of aluminium alloy high-efficiency vacuum smelting apparatus according to claim 1, it is characterised in that on the sidewall of the furnace body
Liquid level limitation bar and lower liquid level limitation bar are additionally provided with, the upper liquid level limitation bar is arranged close to body of heater tip position, described
Lower liquid level limitation bar is arranged close to bottom of furnace body position, and upper liquid level limitation bar and lower liquid level limitation bar pass through wire and electricity respectively
Power supply, red light and green light are installed, red light, power supply and upper liquid level limitation bar constitute one and returned on source case connection, the power supply box
Road, when the molten metal in body of heater encounters upper liquid level limitation bar, the when red, green light, power supply and lower liquid level limitation bar composition
One loop, when the molten metal in body of heater encounters lower liquid level limitation bar, the green light.
3. a kind of aluminium alloy high-efficiency vacuum smelting apparatus according to claim 1 or 2, it is characterised in that the cooling water
The height of the water inlet pipe of pipe is less than outlet pipe so that the pressure that cooling water is formed by running water flows to high from the lower of smelting furnace
Place.
4. a kind of aluminium alloy high-efficiency vacuum smelting apparatus according to claim 1 or 2, it is characterised in that the bell side
Heat resistant rubber is provided between the hole wall in the hole on wall and the airway tube or butterfly valve rotating shaft, for sealing bell side wall.
5. a kind of aluminium alloy high-efficiency vacuum smelting apparatus according to claim 1 or 2, it is characterised in that the butterfly valve
There is heat resistant rubber at edge.
6. a kind of aluminium alloy high-efficiency vacuum smelting apparatus according to claim 1 or 2, it is characterised in that add to reduce
Charging aperture above heat losses during material, the bell is designed to the diminishing structure in section from top to bottom.
7. a kind of aluminium alloy high-efficiency vacuum smelting apparatus according to claim 1 or 2, it is characterised in that be fixed on described
At least 3, the bolt of bell upper surface.
8. a kind of aluminium alloy high-efficiency vacuum smelting apparatus according to claim 1 or 2, it is characterised in that the bell and
Sealing ring is provided between the lamina tecti.
9. a kind of aluminium alloy high-efficiency vacuum smelting apparatus according to claim 1 or 2, it is characterised in that the cooling tube
Into bending helical form, and it is immersed in cooling water.
10. a kind of aluminium alloy high-efficiency vacuum smelting apparatus according to claim 1 or 2, it is characterised in that the drain pipe
With scribble gasket coating at layer gap in the body of heater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720110926.5U CN206556421U (en) | 2017-02-06 | 2017-02-06 | A kind of aluminium alloy high-efficiency vacuum smelting apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720110926.5U CN206556421U (en) | 2017-02-06 | 2017-02-06 | A kind of aluminium alloy high-efficiency vacuum smelting apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206556421U true CN206556421U (en) | 2017-10-13 |
Family
ID=60010134
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720110926.5U Expired - Fee Related CN206556421U (en) | 2017-02-06 | 2017-02-06 | A kind of aluminium alloy high-efficiency vacuum smelting apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206556421U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108220622A (en) * | 2017-12-30 | 2018-06-29 | 苏州博能炉窑科技有限公司 | A kind of dual sealing mechanism of aluminum melt degassing case case lid |
| CN108800940A (en) * | 2018-06-11 | 2018-11-13 | 蚌埠隆华压铸机有限公司 | High stability aluminium alloy melting furnace for cold-chamber die casting machine |
| CN109028949A (en) * | 2018-08-13 | 2018-12-18 | 荆门它山之石电子科技有限公司 | A kind of dedicated smelting furnace |
| CN111271974A (en) * | 2020-02-24 | 2020-06-12 | 索通发展股份有限公司 | Movable carbon slag smelting furnace |
| CN112212607A (en) * | 2020-09-17 | 2021-01-12 | 江西吉事达厨房用品有限公司 | Rapid cooling device for hot working of aluminum alloy section |
| CN118463600A (en) * | 2024-06-06 | 2024-08-09 | 深圳市新星轻合金材料股份有限公司 | Vacuum induction electromagnetic smelting furnace and smelting method |
-
2017
- 2017-02-06 CN CN201720110926.5U patent/CN206556421U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108220622A (en) * | 2017-12-30 | 2018-06-29 | 苏州博能炉窑科技有限公司 | A kind of dual sealing mechanism of aluminum melt degassing case case lid |
| CN108800940A (en) * | 2018-06-11 | 2018-11-13 | 蚌埠隆华压铸机有限公司 | High stability aluminium alloy melting furnace for cold-chamber die casting machine |
| CN109028949A (en) * | 2018-08-13 | 2018-12-18 | 荆门它山之石电子科技有限公司 | A kind of dedicated smelting furnace |
| CN109028949B (en) * | 2018-08-13 | 2019-12-03 | 岳阳联创热能设备有限公司 | A kind of dedicated smelting furnace |
| CN111271974A (en) * | 2020-02-24 | 2020-06-12 | 索通发展股份有限公司 | Movable carbon slag smelting furnace |
| CN112212607A (en) * | 2020-09-17 | 2021-01-12 | 江西吉事达厨房用品有限公司 | Rapid cooling device for hot working of aluminum alloy section |
| CN118463600A (en) * | 2024-06-06 | 2024-08-09 | 深圳市新星轻合金材料股份有限公司 | Vacuum induction electromagnetic smelting furnace and smelting method |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171013 Termination date: 20210206 |