CN107782133A - Door and window hardware part retracting device based on preheating mechanism - Google Patents
Door and window hardware part retracting device based on preheating mechanism Download PDFInfo
- Publication number
- CN107782133A CN107782133A CN201610731901.7A CN201610731901A CN107782133A CN 107782133 A CN107782133 A CN 107782133A CN 201610731901 A CN201610731901 A CN 201610731901A CN 107782133 A CN107782133 A CN 107782133A
- Authority
- CN
- China
- Prior art keywords
- door
- delivery pipe
- stove
- melting chamber
- pipe
- 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- Withdrawn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
-
- 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
- F27B14/08—Details peculiar to crucible or pot furnaces
-
- 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
- F27B14/08—Details peculiar to crucible or pot furnaces
- F27B14/0806—Charging or discharging devices
-
- 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
- F27B14/08—Details peculiar to crucible or pot furnaces
- F27B14/14—Arrangements of heating devices
-
- 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
- F27B14/08—Details peculiar to crucible or pot furnaces
- F27B14/0806—Charging or discharging devices
- F27B2014/0812—Continuously charging
-
- 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
- F27B14/08—Details peculiar to crucible or pot furnaces
- F27B2014/085—Preheating of the charge
-
- 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
- F27B14/08—Details peculiar to crucible or pot furnaces
- F27B2014/0875—Two zones or chambers, e.g. one used for charging
-
- 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
- F27M2003/00—Type of treatment of the charge
- F27M2003/13—Smelting
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Special Wing (AREA)
Abstract
The invention discloses the door and window hardware part retracting device based on preheating mechanism, including stove outer covering, stove inner casing, charge door and drainage conduit, stove inner housing inner space forms melting chamber, air inlet pipe and blast pipe are provided with the outside of stove outer covering, electric heating layer is provided between stove outer covering and stove inner casing, also include delivery pipe, delivery pipe is through stove outer covering side into melting chamber, delivery pipe one end connects with melting chamber, the end face closing of the other end, connection charge door in top on the outside of delivery pipe, inside the charge door connection exterior space and delivery pipe, conveying axis are provided with delivery pipe, the conveying axis to exterior space and are connected with drive device through conveying end surfaces, conveying axis are provided with helical blade.The present invention changes feeding manner, traditional feed pipe is possessed the function of preheating workpiece to be melted, reduces the work load of operating personnel, save fusing time and heat energy, improve production efficiency, additionally provide protection gas, improve casting quality.
Description
Technical field
The present invention relates to a kind of metallurgical plant, and in particular to the door and window hardware part retracting device based on preheating mechanism.
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.But traditional melting furnace only possesses the function of melting metal, and metal melt
Preceding warm is then preheated using exclusive use preheating furnace or preheating chamber, again by the workpiece after preheating after the completion of preheating
Take out and add into melting furnace, so not only increase the workload of operating personnel, and increase thermal energy consumption so that
Low production efficiency, in addition, in melting aluminum alloy process, aluminium alloy during oxygen in air with that can produce oxidation, and in air
Water contact can to produce serious pin hole on the Mechanical processing of casting face to be formed, the serious quality for reducing casting.
The content of the invention
The technical problems to be solved by the invention are directed to the shortcomings that conventional fused stove, there is provided the door and window five based on preheating mechanism
Golden part retracting device, solving conventional fused stove needs additionally to set a preheating furnace and cause the increase of operating personnel's workload, dress
Put that energy consumption is big and conventional fused stove does not have the problem of casting quality caused by good isolation air is low.
The present invention is achieved through the following technical solutions:Door and window hardware part retracting device based on preheating mechanism, including outside stove
Shell and charge door, the stove outer covering inner side are provided with stove inner casing, and the stove inner housing inner space forms melting chamber, stove inner casing inner side
Drainage conduit is provided with, is provided with air inlet pipe and blast pipe on the outside of stove outer covering, the air inlet pipe all connects exterior space with blast pipe
And melting chamber, electric heating layer, in addition to delivery pipe are provided between stove outer covering and stove inner casing, the delivery pipe runs through stove outer covering side
Into melting chamber, delivery pipe one end connects with melting chamber in face, the end face closing of the other end, top connection charging on the outside of delivery pipe
Mouthful, inside the charge door connection exterior space and delivery pipe, conveying axis are provided with delivery pipe, the conveying axis are through conveying
End surfaces are to exterior space and are connected with drive device, and conveying axis are provided with helical blade.In the prior art, in order to solve
The problem for the treatment of fusing workpiece preheating, general specially to set a preheating furnace, preheating furnace needs individually heating, wastes the energy, and
And after preheated workpiece is taken out from preheating furnace, because workpiece is metal, it can be radiated with faster speed, and need to grasp
Make personnel to take out workpiece from preheating furnace and put the workpiece in melting furnace, add the workload of operating personnel, some is molten
Change stove uses sets dual chamber, i.e. melting chamber and preheating chamber in stove, but the setting of preheating chamber occupies the larger space of melting furnace
And setting is more complicated, is not easy to repair, and pre-heat effect is also bad.On the other hand, in process of production, to metal especially
It is that the fusing of aluminium alloy has the problem of serious, i.e. aluminium alloy can absorb hydrogen during fusing, cause to produce on Mechanical processing of casting face
Raw pin hole finds that the hydrogen main source in aluminium liquid is the reaction of aluminium liquid and steam so as to reduce the quality of product by studying,
It is still moist for aluminium liquid although any instrument used in production can all dry, it is adsorbed hydrogen, hydrogen
To be mainly present in two ways in aluminium liquid, wherein most hydrogen is dissolved in aluminium liquid in the form of atom, also fraction with
Molecular forms are adsorbed in the surface or gap of aluminium liquid.In order to solve the above mentioned problem of conventional fused stove, the present invention proposes base
In the door and window hardware part retracting device of preheating mechanism, when using the present apparatus, first by air inlet pipe connective protection gas cylinder, exhaust
Pipe connects vavuum pump, and then fusing chamber inner space is replaced using protection gas, after the completion of displacement, blast pipe is connected big
Gas is passed through in observation oil and has seen whether bubble generation, keeps the circulation of protection gas in melting furnace, opens electric heating layer, leads to
The temperature monitoring being arranged in melting chamber is crossed by the temperature control of melting chamber at 200 to 300 °, is then turned on connecting in delivery pipe
The drive device connect, the output end of drive device drives conveying axis rotation, so as to drive helical blade to rotate, afterwards by blast pipe
Close, further open air inlet pipe angle valve, the intake of increase protection gas, open charging lid, at this moment gas is arranged from charge door
Go out, workpiece to be melted is then poured into from charge door into delivery pipe, workpiece to be melted is in delivery pipe by helical blade
Gradually it is delivered in melting chamber, because melting chamber has temperature, so also there is certain temperature, from chemical industry fusion in delivery pipe
The protective gas that part surface is flowed through takes the vapor that workpiece surface to be melted evaporates from charge door out of, and workpiece to be melted is being gone
Remove after the vapor on surface as helical blade is heated while entering in melting chamber, when accumulation portion lease making in melting chamber
After crossing the workpiece of preheating, continue to heat the temperature of melting chamber to 600 to 700 °, the workpiece of now melting chamber bottom accumulation gradually melts
Change, and the preheating temperature that the workpiece in delivery pipe obtains also is raised, and has reached the purpose for making full use of heat energy, and
Workpiece to be melted is also gradually heated up during melting chamber is transported to, and is directly melted after preheated, compared to tradition
Melting furnace alleviate the workload of operating personnel, save fusing time, during whole charging, protection gas not only acts as
Completely cut off the effect of air, also make the preheating of workpiece to be melted more abundant and taken away the vapor of workpiece surface.
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, leads to not continuously cast molding.
Further, the part of the output end of the drive device and conveying axis connection is resistant to elevated temperatures heat-insulating material.It is molten
Change indoor temperature is higher, if conveying axis use metal material entirely, can transfer heat to drive device causes drive device to receive damage,
So the output end of drive device and the part that links of conveying axis are protected using resistant to elevated temperatures heat-insulating material to drive device.
Further, the edge of the helical blade and the inwall of delivery pipe have gap, and gap is less than the leaf of helical blade
Radius surface.The edge of helical blade and the inwall of delivery pipe must have gap, otherwise the edge of helical blade and delivery pipe
Inner side can all be worn, and higher live load can be caused to drive device, but gap can not be too big, and otherwise helical blade is not
There is the function of promoting workpiece to be melted to enter melting chamber again.
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 drive device of the operating efficiency highest of melting chamber, i.e. connection rotary shaft
Most uniform stirring can be carried out to the workpiece in melting chamber with the live load of minimum.
Further, the output end of the drive device and the part for rotating axis connection are resistant to elevated temperatures heat-insulating material.This
The purpose that sample is set is also to the drive device of protection connection rotary shaft, the temperature for making it not conducted because of rotary shaft
And produce damage.
The present invention compared with prior art, has the following advantages and advantages:
1st, the present invention changes feeding manner, traditional feed pipe is possessed the function of preheating workpiece to be melted,
Reduce the work load of operating personnel, save fusing time, saved heat energy, improve production efficiency;
2nd, 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 furnace;
3rd, the present invention avoids workpiece to be melted using protection gas and contacted with the oxygen in air and water so that Mechanical processing of casting face
Pin hole will not be formed, improves the quality of casting.
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- delivery pipes, 5- output shafts, 6- helical blades, 7- charge doors, 8- discharges
Pipe, 9- agitating paddles, 10- rotary shafts, 11- air inlet pipe, 12- blast pipes.
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 the door and window hardware part retracting device based on preheating mechanism, including stove outer covering 1 and charging
Mouth 7, the inner side of stove outer covering 1 are provided with stove inner casing 2, and the inner space of stove inner casing 2 forms melting chamber, and the inner side of stove inner casing 2 is set
Drainage conduit 8 is equipped with, the outside of stove outer covering 1 is provided with air inlet pipe 11 and blast pipe 12, and the air inlet pipe 11 all connects with blast pipe 12
Exterior space and melting chamber, electric heating layer 3, in addition to delivery pipe 4, the delivery pipe are provided between stove outer covering 1 and stove inner casing 2
4 run through the side of stove outer covering 1 into melting chamber, and the one end of delivery pipe 4 connects with melting chamber, the end face closing of the other end, outside delivery pipe 4
Connection charge door 7 above side, the charge door 7 are connected inside exterior space and delivery pipe 4, and conveying axis are provided with delivery pipe 4
5, the conveying axis 5 to exterior space and are connected with drive device through the end face of delivery pipe 4, and conveying axis 5 are provided with spiral
Blade 6.Further, one end that the drainage conduit 8 is located in melting chamber is provided with filter screen.Further, the drive device
The part that is connected with conveying axis 5 of output end be resistant to elevated temperatures heat-insulating material.Further, the edge of the helical blade 6 with
The inwall of delivery pipe 4 has gap, and gap is less than the blade face radius of helical blade 6.Further, it is provided with the air inlet pipe 11
Pressure gauge.Further, the top of stove outer covering 1 is provided with drive device, and the output end of the drive device is connected with rotation
Axle 10, for the rotary shaft 10 through stove outer covering 1 into melting chamber, the lower end of rotary shaft 10 is connected with agitating paddle 9.Further, institute
The length for stating agitating paddle 9 is 3/4ths of fusing chamber radius.Further, the output end of the drive device and rotary shaft 10
The part of connection is resistant to elevated temperatures heat-insulating material.During using the present apparatus, first by the air in nitrogen displacement melting chamber, then
Electric heating layer 3 is opened, the temperature of melting chamber is risen to 200 to 300 ° by the temperature monitoring being arranged in melting chamber, then
The motor connected in delivery pipe 4 is opened, the output end of motor drives helical blade 6 to rotate by conveying axis 5, and melting chamber is kept
After 200 to 300 ° of a period of times, blast pipe 12 is closed, charge door 7 is opened and covers so that gas is discharged from charge door 7, continues to turn on
The angle valve of air inlet pipe 11, the intake of nitrogen is increased, workpiece to be melted is poured into delivery pipe 4 from charge door 7 afterwards, treated
The workpiece of fusing is gradually delivered in melting chamber in delivery pipe 4 by helical blade 6, workpiece to be melted in delivery pipe 4 by
Fall into melting chamber after being gradually heated, after accumulation portion lease making crosses the workpiece of preheating in melting chamber, open positioned at the top of stove outer covering 1
Motor, motor by rotary shaft 10 drive agitating paddle 9 start to stir, continue afterwards heat melting chamber temperature to 600 to
700 °, the workpiece of now melting chamber bottom accumulation melts as stirring is gradual, and the preheating that the workpiece in delivery pipe 4 obtains
Temperature is also raised, and workpiece to be melted is gradually heated up during melting chamber is transported to, and is directly carried out after the completion of preheating
Fusing, after to be fed, close charge door 7 and cover, open blast pipe 12, reduce the intake of nitrogen, keep nitrogen melting
Circulated in room, after the completion of fusing, open the casting member of drainage conduit 8.
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. the door and window hardware part retracting device based on preheating mechanism, including stove outer covering(1)And charge door(7), 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 inner casing(2)Inner side is provided with drainage conduit
(8), it is characterised in that stove outer covering(1)Outside is provided with air inlet pipe(11)And blast pipe(12), the air inlet pipe(11)And exhaust
Pipe(12)All connect exterior space and melting chamber, stove outer covering(1)With stove inner casing(2)Between be provided with electric heating layer(3), in addition to
Delivery pipe(4), the delivery pipe(4)Through stove outer covering(1)Side is into melting chamber, delivery pipe(4)One end connects with melting chamber,
The end face closing of the other end, delivery pipe(4)Connection charge door above outside(7), the charge door(7)Connect exterior space and defeated
Send pipe(4)Inside, delivery pipe(4)Inside it is provided with conveying axis(5), the conveying axis(5)Through delivery pipe(4)End face to outside is empty
Between and be connected with drive device, around conveying axis(5)It is provided with helical blade(6).
2. the door and window hardware part retracting device according to claim 1 based on preheating mechanism, it is characterised in that the discharge
Pipe(8)One end in melting chamber is provided with filter screen.
3. the door and window hardware part retracting device according to claim 1 based on preheating mechanism, it is characterised in that the driving
The output end and conveying axis of device(5)The part of connection is resistant to elevated temperatures heat-insulating material.
4. the door and window hardware part retracting device according to claim 1 based on preheating mechanism, it is characterised in that the spiral
Blade(6)Edge and delivery pipe(4)Inwall have gap, gap is less than helical blade(6)Blade face radius.
5. the door and window hardware part retracting device according to claim 1 based on preheating mechanism, it is characterised in that the air inlet
Pipe(11)On be provided with pressure gauge.
6. the door and window hardware part retracting device according to claim 1 based on preheating mechanism, 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(9).
7. the door and window hardware part retracting device according to claim 6 based on preheating mechanism, it is characterised in that the stirring
Oar(9)Length for fusing chamber radius 3/4ths.
8. the door and window hardware part retracting device according to claim 6 based on preheating mechanism, it is characterised in that the driving
The output end and rotary shaft of device(10)The part of connection is resistant to elevated temperatures heat-insulating material.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201610731901.7A CN107782133A (en) | 2016-08-26 | 2016-08-26 | Door and window hardware part retracting device based on preheating mechanism |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201610731901.7A CN107782133A (en) | 2016-08-26 | 2016-08-26 | Door and window hardware part retracting device based on preheating mechanism |
Publications (1)
Publication Number | Publication Date |
---|---|
CN107782133A true CN107782133A (en) | 2018-03-09 |
Family
ID=61439259
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201610731901.7A Withdrawn CN107782133A (en) | 2016-08-26 | 2016-08-26 | Door and window hardware part retracting device based on preheating mechanism |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN107782133A (en) |
-
2016
- 2016-08-26 CN CN201610731901.7A patent/CN107782133A/en not_active Withdrawn
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN106630565B (en) | For cooling down the cooling device of glass plate | |
CN105861841A (en) | Processing production line based on door-window hardware recycling | |
CN107782135A (en) | A kind of melting furnace with preheating device and refining chamber | |
CN107782136A (en) | A kind of melting furnace for possessing pre- hot function | |
CN107774938A (en) | A kind of dual chamber melting furnace for having preheating and isolation air function | |
CN107782131A (en) | The recovery system of aluminum alloy doors and windows waste material | |
CN107782132A (en) | A kind of improved structure of the melting furnace with preheating device | |
CN107782133A (en) | Door and window hardware part retracting device based on preheating mechanism | |
CN107774934A (en) | A kind of melting furnace for having preheating and isolation air function | |
CN107779600A (en) | Machining production line based on the recovery of door and window hardware part | |
CN105861839A (en) | Oxygen separating system used for producing steel wooden door metal material | |
CN107782134A (en) | Equipment for reclaiming door and window hardware part | |
CN105865204A (en) | Door and window hardware recycling device based on preheating mechanism | |
CN105838890A (en) | Improved recycling device for metal accessories of suit doors | |
CN107774935A (en) | A kind of melting furnace that can completely cut off air in the casting stage | |
CN100441976C (en) | Impeller built-in heater capable of preventing air door of fan from freezing | |
CN107782157A (en) | A kind of dual chamber melting furnace for possessing pre- hot function | |
CN105838887A (en) | Recovery device for punch forming excess materials of antitheft doors | |
CN107774937A (en) | A kind of improved structure with preheating device dual chamber melting furnace | |
CN105953581A (en) | Production line used for steel wooden door raw material | |
CN107774936A (en) | A kind of improved structure of the melting furnace with refining chamber | |
CN105890358A (en) | Production system for steel wooden door metal raw material | |
CN106086466A (en) | The metal fittings reusing device of suit doors | |
CN105861840A (en) | Antitheft-door stamping-forming leftover regeneration device | |
CN105838888A (en) | Regeneration system based on punch forming excess materials of antitheft doors |
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 |