CN107774935A - A kind of melting furnace that can completely cut off air in the casting stage - Google Patents
A kind of melting furnace that can completely cut off air in the casting stage Download PDFInfo
- Publication number
- CN107774935A CN107774935A CN201610722234.6A CN201610722234A CN107774935A CN 107774935 A CN107774935 A CN 107774935A CN 201610722234 A CN201610722234 A CN 201610722234A CN 107774935 A CN107774935 A CN 107774935A
- Authority
- CN
- China
- Prior art keywords
- casting
- stove
- air
- outer covering
- melting chamber
- 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.)
- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D1/00—Treatment of fused masses in the ladle or the supply runners before casting
- B22D1/002—Treatment with gases
-
- 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
- C22B21/064—Obtaining aluminium refining using inert or reactive gases
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B14/00—Crucible or pot furnaces
- F27B14/04—Crucible or pot furnaces adapted for treating the charge in vacuum or special atmosphere
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B14/00—Crucible or pot furnaces
- F27B14/06—Crucible or pot furnaces heated electrically, e.g. induction crucible furnaces with or without any other source of heat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D27/00—Stirring devices for molten material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D7/00—Forming, maintaining, or circulating atmospheres in heating chambers
- F27D7/06—Forming or maintaining special atmospheres or vacuum within heating chambers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D7/00—Forming, maintaining, or circulating atmospheres in heating chambers
- F27D7/06—Forming or maintaining special atmospheres or vacuum within heating chambers
- F27D2007/063—Special atmospheres, e.g. high pressure atmospheres
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27M—INDEXING SCHEME RELATING TO ASPECTS OF THE CHARGES OR FURNACES, KILNS, OVENS OR RETORTS
- F27M2001/00—Composition, conformation or state of the charge
- F27M2001/01—Charges containing mainly non-ferrous metals
- F27M2001/012—Aluminium
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Special Wing (AREA)
Abstract
The invention discloses a kind of melting furnace that can completely cut off air in the casting stage, including stove outer covering, stove inner casing is provided with the inside of the stove outer covering, the stove inner housing inner space forms melting chamber, charge pipe is provided with above stove outer covering, the charge pipe connects through stove outer covering and with melting chamber, drainage conduit is provided with the inside of stove inner casing, also include casting case, the drainage conduit connection melting chamber and casting case, blast pipe and appendix are provided with the outside of casting case, wherein, blast pipe connects casting case and exterior space, appendix connects casting case and melting chamber, air inlet pipe is provided with stove outer covering, air inlet pipe connects exterior space and melting chamber, electric heating layer is provided between stove outer covering and stove inner casing.It is of the invention to protect gas and casting case by setting, prevent casting from, with air contact, solving the problems, such as that casting quality of the casting caused by aoxidizing and being contacted with vapor is low in fusing and casting cycle.
Description
Technical field
The present invention relates to a kind of metallurgical plant, and in particular to a kind of melting furnace that can completely cut off air in the casting stage.
Background technology
Door and window as in people's daily life often in contact with to article, not only play and keep out wind and rain, be heat-insulated, insulating against sound, adopting
Light, ventilation etc. act on, but also are the important components of architectural image, and their shape, size, color, moulding etc. are to building
Building the moulded of thing has critically important influence.As the improvement of people's living standards, people are more next to the demand of door and window
Bigger, the requirement to door and window is also more and more diversified.
Aluminum alloy doors and windows are an important branch of door and window, aluminum alloy doors and windows refer to use aluminum alloy extrusion section bar for frame,
The door and window that stile, fan material make.Aluminum alloy doors and windows are because having the characteristics that attractive in appearance, sealing, intensity is high is widely used.Aluminium alloy
The section bar and glass style of door and window are divided into glazing bar style and flower glass style, wherein, glazing bar style is based on aluminium is thick, style is sedate
Characteristic is wanted, for flower glass style with aluminium various shapes, style vivaciously for main characteristics, style has lattice, ice sculpture, low relief, brilliant shellfish etc..
The first procedure is exactly blanking in the aluminum alloy doors and windows technological process of production, and required aluminium can be obtained by blanking
Alloy frame material and fan material, however, no matter the device of blanking has more accurate and high-end, much discarded leftover pieces can be all produced, it is right
For a factory, if these discarded leftover pieces, which are directly thrown away, to cause the loss of flood tide, many enterprises all select now
Select and try every possible means efficiently to reclaim these discarded leftover pieces so as to reduce the production cost of aluminum alloy doors and windows to reach lifting oneself
The purpose of product competitiveness.
The first step of recovery aluminium alloy scrap needs to melt these aluminium alloy scraps, and equipment used is melting furnace, fusing
Stove can meet aluminum alloy melting technique well.Traditional melting furnace cannot accomplish to completely cut off well during fusing and casting
Air, causes the dioxygen oxidation metal liquid in air, and the hydrogen of the vapor generation in air can cause the casting to be formed to add
Serious pin hole is produced on work face, reduces the quality of casting.
The content of the invention
The technical problems to be solved by the invention are the shortcomings that being directed to conventional fused stove, there is provided one kind can casting the stage every
The melting furnace of exhausted air, solves traditional melting furnace casting caused by molten metal and air contact during fusing and casting
Low-quality problem.
The present invention is achieved through the following technical solutions a kind of tight device of work piece positioning, including one kind can the casting stage every
The melting furnace of exhausted air, including stove outer covering, the stove outer covering inner side are provided with stove inner casing, and the stove inner housing inner space forms molten
Change room, charge pipe is provided with above stove outer covering, the charge pipe connects through stove outer covering and with melting chamber, is set on the inside of stove inner casing
There are drainage conduit, in addition to a casting case, the drainage conduit connection melting chamber and casting case, blast pipe and defeated is provided with the outside of casting case
Tracheae, wherein, blast pipe connection casting case and exterior space, appendix connect casting case and melting chamber, are provided with stove outer covering
Air inlet pipe, air inlet pipe connection exterior space and melting chamber.Electric heating layer is provided between stove outer covering and stove inner casing.Prior art exists
In production process, the problem of serious in fusing metal especially aluminium alloy be present, i.e. aluminium liquid can absorb hydrogen, cause casting to add
Pin hole is produced on work face so as to reduce the quality of product, the hydrogen main source in aluminium liquid is the reaction of aluminium liquid and steam, production
Although any instrument used in can all dry, and be still moist for aluminium liquid, it is adsorbed hydrogen；In addition,
Oxygen present in air can make metal liquid oxidation, be unfavorable for the fusing of metal.In summary, if it is possible to melting metal
With not ingress of air during casting, the quality of casting will be improved.During using the present apparatus, first by air inlet pipe connective protection gas steel
Bottle, blast pipe connection vavuum pump, then fusing chamber inner space is replaced using protection gas, after the completion of displacement, will be vented
Pipe, which connects air or is passed through in observation oil, has seen whether bubble generation, keeps the circulation of protection gas in melting chamber, opens electricity
Zone of heating, afterwards will exhaust by the temperature monitoring that is arranged in melting chamber by the temperature control of melting chamber at 200 to 300 °
Pipe is closed, and is further opened air inlet pipe angle valve, the intake of increase protection gas, is opened charging lid, at this moment gas is from charge door
Discharge, then pours into workpiece to be melted into melting chamber from charge door, after division of labor part in accumulation portion in melting chamber, continues to add
The temperature of heat fusing room is to 600 to 700 °, after the completion of charging, closes charging lid, opens blast pipe, at this moment protects gas from air inlet
Pipe enters in melting chamber, by efferent duct enter in casting case and be finally passed through from blast pipe air or observation it is oily in, it is molten
After the completion of change, drainage conduit is opened, molten metal completes casting by being entered in drainage conduit in casting case.In fusing and the mistake of casting
In Cheng Zhong, melting chamber and casting case casting is improved with the presence of protection gas so as to cause molten metal to completely cut off air well
Quality.
Further, one end that the drainage conduit is located in melting chamber is provided with filter screen.Filter screen is set to prevent not complete
The workpiece of running down blocks drainage conduit and leads to not continuously cast molding.
Further, cooling device is installed on the outside of the appendix.After the completion of charging, protection gas enters molten from air inlet pipe
Change in room, because temperature is very high in melting chamber, also possess higher temperature after protecting aspiration heat, then enter by appendix
When in casting case, set on the outside of appendix cooling device can to enter in casting case to protect gas not have too high
Temperature and cause extend casting molding time.Cooling device uses the structure of condenser pipe, and appendix periphery is provided with encirclement
The pipeline of appendix, it is passed through in the duct and discharges cooling water so that being so incensed that cooling by the high temperature protection of appendix, so as to
So that casting molding time shortens.
Further, it is provided with angle valve on the appendix.Set angle valve operating personnel can be made to better control over gas
Flowing, for example, in charging, the angle valve closed on appendix can be such that protection gas does not enter in casting case and direct
From charging mouth of pipe discharge.
Further, it is provided with pressure gauge in the air inlet pipe.Set pressure gauge that operating personnel can be made to observe fusing
Pressure in room simultaneously checks air-tightness, makes the operation of displacement protection gas more smooth.
Further, drive device is provided with above the stove outer covering, the output end of the drive device is connected with rotation
Axle, for the rotary shaft through stove outer covering into melting chamber, rotary shaft lower end is connected with agitating paddle.Can be more quick by stirring
Ground melts workpiece, improves the operating efficiency of melting chamber.
Further, the length of the agitating paddle is 3/4ths of fusing chamber radius.Found, stirred by production practices
When the length of oar is melts 3/4ths of chamber radius, the operating efficiency highest of melting chamber.
Further, the part of the output end of the drive device and output axis connection is high-temperature resistant thermal insulating material.So
The purpose of setting is to protect the drive device of connection rotary shaft, it is not produced damage because of the temperature that rotary shaft is conducted
Wound.
The present invention compared with prior art, has the following advantages and advantages：
1st, the present invention prevents casting from, with air contact, being prevented in fusing and casting cycle by setting protection gas and casting case
The problem of casting quality of the casting because of oxidation and caused by contacting with vapor is low；
2nd, the present invention is provided with cooling device around appendix, and the protection air-flow after cooling has cooling to imitate when crossing molten metal surface
Fruit, shorten the cast molding time；
3rd, the present invention is had found when the length of agitating paddle is melts 3/4ths of chamber radius, drive device by production practices
More preferable stirring can be reached with less live load, further improve the operating efficiency of melting chamber.
Brief description of the drawings
Accompanying drawing described herein is used for providing further understanding the embodiment of the present invention, forms one of the application
Point, do not form the restriction to the embodiment of the present invention.In the accompanying drawings：
Fig. 1 is the structural representation of semi-section of the present invention.
Mark and corresponding parts title in accompanying drawing：
1- stove outer coverings, 2- stove inner casings, 3- electric heating layers, 4- agitating paddles, 5- blast pipes, 6- drainage conduits, 7- appendixs, 8- air inlets
Pipe, 9- feed pipes, 10- rotary shafts.
Embodiment
For the object, technical solutions and advantages of the present invention are more clearly understood, with reference to embodiment and accompanying drawing, to this
Invention is described in further detail, and exemplary embodiment of the invention and its explanation are only used for explaining the present invention, do not make
For limitation of the invention.
Embodiment
As shown in figure 1, the present invention is a kind of melting furnace that can completely cut off air in the casting stage, including stove outer covering 1, the stove
The inner side of shell 1 is provided with stove inner casing 2, and the inner space of stove inner casing 2 forms melting chamber, and the top of stove outer covering 1 is provided with charge pipe
9, the charge pipe 9 connects through stove outer covering 1 and with melting chamber, and the inner side of stove inner casing 2 is provided with drainage conduit 6, in addition to casting case,
The drainage conduit 6 connects melting chamber and casting case, and blast pipe 5 and appendix 7 are provided with the outside of casting case, wherein, blast pipe 5 connects
Logical casting case and exterior space, appendix 7 connect casting case and melting chamber, are provided with air inlet pipe 8 on stove outer covering 1, air inlet pipe 8 connects
Logical exterior space and melting chamber, are provided with electric heating layer 3 between stove outer covering 1 and stove inner casing 2.Further, the drainage conduit 6
One end in melting chamber is provided with filter screen.Further, the outside of appendix 7 is provided with cooling device.Further, institute
State and be provided with angle valve on appendix 7.Pressure gauge is provided with the air inlet pipe 8.The top of stove outer covering 1 is provided with driving dress
Put, the output end of the drive device is connected with rotary shaft 10, and the rotary shaft 10, into melting chamber, rotates through stove outer covering 1
The lower end of axle 10 is connected with agitating paddle 4.Further, the length of the agitating paddle 4 is 3/4ths of fusing chamber radius.Further
Ground, the part that the output end of the drive device is connected with output shaft 10 is high-temperature resistant thermal insulating material.During using the present apparatus, first
Using the air in nitrogen displacement melting chamber, electric heating layer 3 is then turned on, will by the temperature monitoring being arranged in melting chamber
The temperature of melting chamber rises to 200 to 300 °, then increases the air inflow of nitrogen, the angle valve closed on blast pipe 5 and appendix 7,
Open charge door 9 to cover so that gas is discharged from charge door 9, and workpiece to be melted is poured into melting chamber from charge door 9 afterwards
In, when bottom accumulation part is in the workpiece of semi-molten state, the motor positioned at the top of stove outer covering 1 is opened, motor passes through rotary shaft
10 drive agitating paddles 4 stir, and after charging, close charge door 9 and cover, open the angle valve on blast pipe 5 and appendix 7, make nitrogen
Gas is after air inlet pipe 8 enters melting chamber, then is entered in casting case by appendix 7, eventually through blast pipe 5 enter air or
Person is observed in oil, continues to heat the temperature of melting chamber afterwards to 600 to 700 °, the workpiece of now melting chamber bottom accumulation is with stirring
Gradual fusing is mixed, keeps nitrogen to be circulated in melting chamber and casting case in fusion process, after the completion of fusing, opens drainage conduit
8 are pointed to the die casting in casting case, while open the condenser pipe in the outside of appendix 7 to being carried out by the nitrogen of appendix 7
Cooling, final casting is melted in the environment of air is completely cut off and cast molding.
Above-described embodiment, the purpose of the present invention, technical scheme and beneficial effect are carried out further
Describe in detail, should be understood that the embodiment that the foregoing is only the present invention, be not intended to limit the present invention
Protection domain, within the spirit and principles of the invention, any modification, equivalent substitution and improvements done etc., all should include
Within protection scope of the present invention.
Claims (8)
1. a kind of can be in the melting furnace of casting stage isolation air, including stove outer covering（1）, the stove outer covering（1）Inner side is provided with
Stove inner casing（2）, the stove inner casing（2）Inner space forms melting chamber, stove outer covering（1）Top is provided with charge pipe（9）, it is described to add
Expects pipe（9）Through stove outer covering（1）And connected with melting chamber, stove inner casing（2）Inner side is provided with drainage conduit（6）, it is characterised in that also
Including casting case, the drainage conduit（6）Melting chamber and casting case are connected, blast pipe is provided with the outside of casting case（5）And appendix
（7）, wherein, blast pipe（5）Connect casting case and exterior space, appendix（7）Connect casting case and melting chamber, stove outer covering（1）
On be provided with air inlet pipe（8）, air inlet pipe（8）Connect exterior space and melting chamber, stove outer covering（1）With stove inner casing（2）Between set
There is electric heating layer（3）.
A kind of 2. melting furnace that can completely cut off air in the casting stage according to claim 1, it is characterised in that the discharge
Pipe（6）One end in melting chamber is provided with filter screen.
A kind of 3. melting furnace that can completely cut off air in the casting stage according to claim 1, it is characterised in that the gas transmission
Pipe（7）Outside is provided with cooling device.
A kind of 4. melting furnace that can completely cut off air in the casting stage according to claim 1, it is characterised in that the gas transmission
Pipe（7）On be provided with angle valve.
A kind of 5. melting furnace that can completely cut off air in the casting stage according to claim 1, it is characterised in that the air inlet
Pipe（8）On be provided with pressure gauge.
6. a kind of melting furnace that can completely cut off air in the casting stage according to claim 1, it is characterised in that outside the stove
Shell（1）Top is provided with drive device, and the output end of the drive device is connected with rotary shaft（10）, the rotary shaft（10）Pass through
Wear stove outer covering（1）Into melting chamber, rotary shaft（10）Lower end is connected with agitating paddle（4）.
A kind of 7. melting furnace that can completely cut off air in the casting stage according to claim 6, it is characterised in that the stirring
Oar（4）Length for fusing chamber radius 3/4ths.
A kind of 8. melting furnace that can completely cut off air in the casting stage according to claim 6, it is characterised in that the driving
The output end and output shaft of device（10）The part of connection is high-temperature resistant thermal insulating material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610722234.6A CN107774935A (en) | 2016-08-25 | 2016-08-25 | A kind of melting furnace that can completely cut off air in the casting stage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610722234.6A CN107774935A (en) | 2016-08-25 | 2016-08-25 | A kind of melting furnace that can completely cut off air in the casting stage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107774935A true CN107774935A (en) | 2018-03-09 |
Family
ID=61388794
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610722234.6A Withdrawn CN107774935A (en) | 2016-08-25 | 2016-08-25 | A kind of melting furnace that can completely cut off air in the casting stage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107774935A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111001797A (en) * | 2019-12-23 | 2020-04-14 | 湖州市织里新飞铝业股份有限公司 | A watering device for aluminum products production and processing usefulness |
-
2016
- 2016-08-25 CN CN201610722234.6A patent/CN107774935A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111001797A (en) * | 2019-12-23 | 2020-04-14 | 湖州市织里新飞铝业股份有限公司 | A watering device for aluminum products production and processing usefulness |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180309 |
|
| WW01 | Invention patent application withdrawn after publication |