CN107779600A - Machining production line based on the recovery of door and window hardware part - Google Patents
Machining production line based on the recovery of door and window hardware part Download PDFInfo
- Publication number
- CN107779600A CN107779600A CN201610722511.3A CN201610722511A CN107779600A CN 107779600 A CN107779600 A CN 107779600A CN 201610722511 A CN201610722511 A CN 201610722511A CN 107779600 A CN107779600 A CN 107779600A
- Authority
- CN
- China
- Prior art keywords
- door
- delivery pipe
- melting chamber
- outer covering
- stove
- 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- Withdrawn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
-
- 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
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/001—Dry processes
- C22B7/003—Dry processes only remelting, e.g. of chips, borings, turnings; apparatus used therefor
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses the machining production line reclaimed based on door and window hardware part, including stove outer covering, stove inner casing, charge door and drainage conduit, also include casting case, drainage conduit connects melting chamber and casting case, blast pipe and appendix are provided with the outside of casting case, 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, also include delivery pipe, delivery pipe is through stove outer covering side into melting chamber, delivery pipe one end connects with melting chamber, 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, 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 machining production line based on the recovery of door and window hardware part.
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 all uses in preheated metallic and is separately provided preheating
Stove or preheating chamber are preheated, and the workpiece after preheating is taken out and added into melting furnace again after the completion of preheating, are so done not
The workload of operating personnel is increase only, and increases thermal energy consumption so that low production efficiency, in addition, traditional melting furnace
It cannot accomplish to completely cut off air well during charging, fusing and casting, cause the dioxygen oxidation metal liquid in air, it is empty
In gas vapor generation hydrogen can to produce serious pin hole on the Mechanical processing of casting face to be formed, reduce the matter of casting
Amount.
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 based on the recovery of door and window hardware part
Machining production line, solving conventional fused stove needs additionally to set a preheating furnace and cause the increase of operating personnel's workload, device
Energy consumption is big and the conventional fused stove casting quality caused by molten metal and air contact during charging, fusing and casting
The problem of low.
The present invention is achieved through the following technical solutions：Based on the machining production line of door and window hardware part recovery, including stove outer covering
And charge door, the stove outer covering inner side are provided with stove inner casing, the stove inner housing inner space forms melting chamber, set on the inside of stove inner casing
Drainage conduit is equipped with, in addition to casting case, the drainage conduit connection melting chamber and casting case, casting case outside is provided with blast pipe
And appendix, wherein, blast pipe connection casting case and exterior space, appendix connect casting case and melting chamber, are set on stove outer covering
Air inlet pipe, air inlet pipe connection exterior space and melting chamber are equipped with, electric heating layer is provided between stove outer covering and stove inner casing, in addition to
Delivery pipe, the delivery pipe is through stove outer covering side into melting chamber, and delivery pipe one end connects with melting chamber, the end face of the other end
Closing, delivery pipe outside top connection charge door, the charge door are connected inside exterior space and delivery pipe, setting in delivery pipe
There are conveying axis, the conveying axis to exterior space and are connected with drive device through conveying end surfaces, are provided with around conveying axis
Helical blade.In the prior art, it is general that preheating furnace, preheating furnace are specially set in order to solve the problems, such as to treat fusing workpiece preheating
Need individually to heat, waste the energy, and after preheated workpiece is taken out from preheating furnace, can be with because workpiece is metal
Faster speed radiating, and need operating personnel to take out workpiece from preheating furnace and put the workpiece in melting furnace, add behaviour
Make the workload of personnel, and workpiece to be melted can also touch air, and some melting furnace uses the setting in stove double
Room, i.e. melting chamber and preheating chamber, but the setting of preheating chamber occupies the larger space of melting furnace and setting is more complicated, is not easy to
Maintenance, and pre-heat effect is also bad.On the other hand, in process of production, exist in fusing metal especially aluminium alloy tight
The problem of weight, i.e., aluminium liquid can absorb hydrogen, cause to produce pin hole on Mechanical processing of casting face so as to reduce the quality of product, in aluminium liquid
Hydrogen main source is the reaction of aluminium liquid and steam, although any instrument used in production can all dry, comes for aluminium liquid
Say to be still moist, it is adsorbed hydrogen；Oxygen present in air can make metal liquid oxidation, be unfavorable for the molten of metal
Change.In order to solve the above mentioned problem of conventional fused stove, the present invention proposes the machining production line based on the recovery of door and window hardware part,
During using the present apparatus, first by air inlet pipe connective protection gas cylinder, blast pipe connection vavuum pump, then using protection gas to fusing
Chamber inner space enters line replacement, after the completion of displacement, by blast pipe connect air or be passed through observation oil in seen whether bubble
Produce, keep the circulation of protection gas in melting chamber.Electric heating layer is opened, will be molten by the temperature monitoring being arranged in melting chamber
Change the temperature control of room at 200 to 300 °, be then turned on the drive device connected in delivery pipe, the output end of drive device drives
Conveying axis are rotated, and so as to drive helical blade to rotate, afterwards close blast pipe, further open air inlet pipe angle valve, and increase is protected
The intake of gas is protected, opens charging lid, at this moment then gas pours into work to be melted from charging lid discharge from charge door
Into delivery pipe, workpiece to be melted is gradually delivered in melting chamber part in delivery pipe by helical blade, because melting chamber has
There is temperature, so also have certain temperature in delivery pipe, from the protective gas that workpiece surface to be melted flows through by chemical industry fusion
The vapor of part surface evaporation is taken out of from charge door, and workpiece to be melted is after the vapor on surface is got rid of with helical blade
It is heated while entering in melting chamber, during whole charging, protection gas not only acts as the effect of isolation air, also makes
The preheating of workpiece to be melted is more abundant and has taken away the vapor of workpiece surface.After the completion of charging, continue to heat melting chamber
Temperature to 600 to 700 °, close charging lid, open blast pipe, at this moment protect gas from air inlet pipe enter melting chamber in, pass through
Efferent duct enter in casting case and be finally passed through from blast pipe air or observation it is oily in, after the completion of fusing, opening drainage conduit,
Molten metal completes casting by being entered in drainage conduit in casting case.By aforesaid operations, in the process of charging, fusing and casting
In, improve the matter of casting with the presence of protection gas so as to cause molten metal to completely cut off air well in melting chamber and casting case
Amount.In addition, aforesaid operations have reached the purpose for making full use of heat energy, workpiece to be melted is during melting chamber is transported to
It is gradually heated up, is directly melted after preheated, compared to the workload that traditional melting furnace alleviates operating personnel, saved
Fusing time.
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, cooling device is installed on the outside of the appendix, angle valve is provided with appendix.After the completion of charging,
Protect gas to enter from air inlet pipe in melting chamber, because temperature is very high in melting chamber, also possess after protection aspiration heat higher
Temperature, then by appendix enter casting case in when, on the outside of appendix set cooling device can to enter casting case
In protect gas not have too high temperature and cause extend casting molding time.Cooling device uses the structure of condenser pipe,
The pipeline for surrounding appendix is provided with appendix periphery, is passed through and discharges in the duct cooling water and cause height by appendix
Cooling is so incensed that in temperature protection, so that casting molding time shortens.Set angle valve operating personnel can be made to better control over gas
The flowing of body, for example, in charging, the angle valve closed on appendix can be such that protection gas does not enter in casting case and straight
Connect 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, 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, 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 using protection gas avoid oxygen in charging, fusing and casting stage workpiece and air to be melted and
Water contacts so that Mechanical processing of casting face will not form pin hole, improve 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- puddlers, 5- conveying axis, 6- helical blades, 7- charge doors, 8- air inlets
Pipe, 9- appendixs, 10- drainage conduits, 11- blast pipes, 12- delivery pipes, 13- 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 the machining production line based on the recovery of door and window hardware part, including stove outer covering 1 and charge door
7, the inner side of stove outer covering 1 is 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
There are drainage conduit 10, in addition to casting case, the drainage conduit 10 connects melting chamber and casting case, blast pipe is provided with the outside of casting case
11 and appendix 9, wherein, blast pipe 11 connects casting case and exterior space, and appendix 9 connects casting case and melting chamber, outside stove
Air inlet pipe 8 is provided with shell 1, air inlet pipe 8 connects exterior space and melting chamber, and electricity is provided between stove outer covering 1 and stove inner casing 2 and is added
Thermosphere 3, in addition to delivery pipe 12, the delivery pipe 12 is through the side of stove outer covering 1 into melting chamber, and the one end of delivery pipe 12 is with melting
Room connects, the closing of the end face of the other end, the outside of delivery pipe 12 top connection charge door 7, the charge door 7 connect exterior space and
Inside delivery pipe 12, be provided with conveying axis 5 in delivery pipe 12, the conveying axis 5 through the end face of delivery pipe 12 to exterior space and
Drive device is connected with, conveying axis 5 are provided with helical blade 6.Further, the drainage conduit 10 is located in melting chamber
One end is provided with filter screen.Further, the part that the output end of the drive device is connected with conveying axis 5 is resistant to elevated temperatures thermal insulation
Material.Further, the outside of appendix 9 is provided with cooling device, and angle valve is provided with appendix 9.Further, it is described
Pressure gauge is provided with air inlet pipe 8.Further, there are gap, gap in the edge of the helical blade 6 with the inwall of delivery pipe 12
Less than the blade face radius of helical blade 6.Further, the top of stove outer covering 1 is provided with drive device, the drive device
Output end is connected with rotary shaft 13, and for the rotary shaft 13 through stove outer covering 1 into melting chamber, the lower end of rotary shaft 13 is connected with stirring
Oar 4.Further, the length of the agitating paddle 4 is 3/4ths of fusing chamber radius.Further, the drive device
The part that output end is connected with rotary shaft 13 is resistant to elevated temperatures heat-insulating material.During using the present apparatus, melted first by nitrogen displacement
Change indoor air, be then turned on electric heating layer 3, by the temperature monitoring that is arranged in melting chamber by the temperature liter of melting chamber
To 200 to 300 °, the motor connected in delivery pipe 12 is then turned on, the output end of motor drives helical blade 6 by conveying axis 5
Rotate, after melting chamber is kept for 200 to 300 ° of a period of times, the angle valve on closing blast pipe 11 and appendix 9, open charge door 7
Lid so that gas is discharged from charge door 7, is continued to turn on the angle valve of air inlet pipe 11, is increased the intake of nitrogen, afterwards will be to be melted
Workpiece be poured into from charge door 7 in delivery pipe 12, workpiece to be melted is gradually delivered in delivery pipe 12 by helical blade 6
In melting chamber, workpiece to be melted is fallen into melting chamber after being gradually heated in delivery pipe 12, when accumulating part in melting chamber
After the workpiece of preheating, the motor positioned at the top of stove outer covering 1 is opened, motor drives agitating paddle 4 to start to stir by rotary shaft 13
Mix, continue to heat the temperature of melting chamber afterwards to 600 to 700 °, after charging, close charge door 7 and cover, open blast pipe 11
With appendix 9, nitrogen is set to be entered after air inlet pipe 11 enters melting chamber, then by appendix 9 in casting case, eventually through row
Tracheae 11 enters in air or observation oil, stirs in fusion process, reduces the intake of nitrogen, keep nitrogen in melting chamber and
Circulated in casting case, after the completion of fusing, open the die casting that drainage conduit 10 is pointed in casting case, while open gas transmission
The condenser pipe in the outside of pipe 9 cools to the nitrogen by appendix 9, and final casting melts and poured in the environment of air is completely cut off
Type casting moulding.
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 (9)
1. based on the machining production line of door and window hardware part recovery, including stove outer covering（1）And charge door（7）, the stove outer covering（1）It is interior
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
（10）, it is characterised in that also including casting case, the drainage conduit（10）Melting chamber and casting case are connected, is set on the outside of casting case
There is blast pipe（11）And appendix（9）, wherein, blast pipe（11）Connect casting case and exterior space, appendix（9）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 be provided with electric heating layer（3）, in addition to delivery pipe（12）, the delivery pipe（12）Through stove outer covering（1）
Side is into melting chamber, delivery pipe（12）One end connects with melting chamber, the end face closing of the other end, delivery pipe（12）Above outside
Connect charge door（7）, the charge door（7）Connect exterior space and delivery pipe（12）Inside, delivery pipe（12）Inside it is provided with defeated
Send axle（5）, the conveying axis（5）Through delivery pipe（12）End face is to exterior space and is connected with drive device, around conveying axis
（5）It is provided with helical blade（6）.
2. the machining production line according to claim 1 based on the recovery of door and window hardware part, it is characterised in that the drainage conduit
（10）One end in melting chamber is provided with filter screen.
3. the machining production line according to claim 1 based on the recovery of door and window hardware part, it is characterised in that the driving dress
The output end and conveying axis put（5）The part of connection is resistant to elevated temperatures heat-insulating material.
4. the machining production line according to claim 1 based on the recovery of door and window hardware part, it is characterised in that the appendix
（9）Outside is provided with cooling device, appendix（9）On be provided with angle valve.
5. the machining production line according to claim 1 based on the recovery of door and window hardware part, it is characterised in that the air inlet pipe
（8）On be provided with pressure gauge.
6. the machining production line according to claim 1 based on the recovery of door and window hardware part, it is characterised in that the helical-blade
Piece（6）Edge and delivery pipe（12）Inwall have gap, gap is less than helical blade（6）Blade face radius.
7. the machining production line according to claim 1 based on the recovery of door and window hardware part, it is characterised in that the stove outer covering
（1）Top is provided with drive device, and the output end of the drive device is connected with rotary shaft（13）, the rotary shaft（13）Run through
Stove outer covering（1）Into melting chamber, rotary shaft（13）Lower end is connected with agitating paddle（4）.
8. the machining production line according to claim 7 based on the recovery of door and window hardware part, it is characterised in that the agitating paddle
（4）Length for fusing chamber radius 3/4ths.
9. the machining production line according to claim 7 based on the recovery of door and window hardware part, it is characterised in that the driving dress
The output end and rotary shaft put（13）The part of connection is resistant to elevated temperatures heat-insulating material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610722511.3A CN107779600A (en) | 2016-08-25 | 2016-08-25 | Machining production line based on the recovery of door and window hardware part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610722511.3A CN107779600A (en) | 2016-08-25 | 2016-08-25 | Machining production line based on the recovery of door and window hardware part |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107779600A true CN107779600A (en) | 2018-03-09 |
Family
ID=61393361
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610722511.3A Withdrawn CN107779600A (en) | 2016-08-25 | 2016-08-25 | Machining production line based on the recovery of door and window hardware part |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107779600A (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 CN201610722511.3A patent/CN107779600A/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 |
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 | |
| CN114277270B (en) | Manufacturing method and manufacturing device of low-density corrosion-resistant high-strength aluminum alloy | |
| CN107779600A (en) | Machining production line based on the recovery of door and window hardware part | |
| 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 | |
| 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 | |
| CN105861839A (en) | Oxygen separating system used for producing steel wooden door metal material | |
| CN107774935A (en) | A kind of melting furnace that can completely cut off air in the casting stage | |
| CN107774938A (en) | A kind of dual chamber melting furnace for having preheating and isolation air function | |
| CN210085541U (en) | Energy-efficient lead refining device | |
| CN105865204A (en) | Door and window hardware recycling device based on preheating mechanism | |
| CN209101795U (en) | A kind of aluminium skimmings melting furnace | |
| CN107774934A (en) | A kind of melting furnace for having preheating and isolation air function | |
| CN105838890A (en) | Improved recycling device for metal accessories of suit doors | |
| CN107782134A (en) | Equipment for reclaiming door and window hardware part | |
| CN107782133A (en) | Door and window hardware part retracting device based on preheating mechanism | |
| CN107774937A (en) | A kind of improved structure with preheating device dual chamber melting furnace | |
| CN100441976C (en) | Impeller built-in heater capable of preventing air door of fan from freezing | |
| CN105838887A (en) | Recovery device for punch forming excess materials of antitheft doors | |
| CN105890358A (en) | Production system for steel wooden door metal raw material | |
| CN107774936A (en) | A kind of improved structure of the melting furnace with refining chamber | |
| CN105861840A (en) | Antitheft-door stamping-forming leftover regeneration device | |
| CN105953581A (en) | Production line used for steel wooden door raw material |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180309 |