CN109022880B - A kind of foamed aluminium Quick foaming device - Google Patents
A kind of foamed aluminium Quick foaming device Download PDFInfo
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- CN109022880B CN109022880B CN201811180599.6A CN201811180599A CN109022880B CN 109022880 B CN109022880 B CN 109022880B CN 201811180599 A CN201811180599 A CN 201811180599A CN 109022880 B CN109022880 B CN 109022880B
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- foaming
- molten aluminum
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- aluminum
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/08—Alloys with open or closed pores
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D25/00—Special casting characterised by the nature of the product
- B22D25/005—Casting metal foams
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/08—Alloys with open or closed pores
- C22C1/083—Foaming process in molten metal other than by powder metallurgy
- C22C1/086—Gas foaming process
Abstract
A kind of foamed aluminium Quick foaming device, including foaming storehouse, foaming storehouse side are provided with charging port, and foam warehouse bottom portion is provided with melt extrusion mouth, can be squeezed out the molten aluminum after the completion of foaming by the melt extrusion mouth；Foaming at least one side of storehouse lower part is connected with infusion spray gun processed, the ejection end of the infusion spray gun processed penetrates into inside foaming storehouse, a stripper plate is provided in the foaming storehouse, the extruding board ends are slidably connected on sliding rail, the sliding rail is fixed on foaming storehouse upper inside wall, and the stripper plate top is connected with cylinder, the expanding-contracting action by controlling cylinder drives stripper plate to move up and down along sliding rail, and the melt molten aluminum that foaming is completed in storehouse of foaming is squeezed out by melt extrusion mouth.The present invention not only can be to avoid bubble floating, but also metal foaming melt can be made to continue to complete foaming, reduced foam and liquid layered in metal foaming melt, improved yield rate, controlled rework rate, reduced casting cost.
Description
Technical field
The present invention relates to metal foaming technical field, specially a kind of foamed aluminium Quick foaming device.
Background technique
Porous foam metal material is made of metallic framework and hole, is a kind of function material developed in recent years
Material.Since the advent of the world, as structural material, it has the characteristics that lightweight, high specific strength；As functional material, it have it is porous,
Vibration damping, sound-absorbing, sound insulation, fire prevention, moisture-proof, heat dissipation, absorbs a variety of good physical behaviors such as impact energy, electromagnetic shielding at damping, furthermore
Its easy processing, it is easy to install, can external coating and the characteristics of recycle, adapted to the needs of current development, at home and abroad generally
Industrial circle and high-tech sector are more and more widely used.
Foam metal is that the additives such as adhesion agent, foaming agent are added in pure metal or metallic alloy melt, by foaming
New material made of technique, while having metal and bubble feature concurrently.The porous foam metal material having been developed that at present has foam
Aluminium, foam aluminium alloy, nickel foam, foam zinc, Lead Foam, titanium foam etc., wherein the research of foamed aluminium is earliest, and in practical application
In show wide prospect.
Although foam metal has a good application prospect, since process for smelting is not mature enough, there is many
Problem not yet well solves, and highlightedly shows: too early, temperature drops too early, is too low, leads to melt for fluidity of molten control
It cannot sufficiently foam or external cooling is too fast, will lead to interior external ripe different, hollow phenomenon or mobility control occur
Evening forms foam and solids stratification is obvious.Therefore, existing equipment can not quickly finish the foaming requirement of foamed aluminium, cannot
Realize foaming requirement rapidly, continuously.
Summary of the invention
For defective workmanship of the existing technology, the present invention provides a kind of uniform in foaming, the foamed aluminium at foamed time end
Quick foaming device.
A kind of foamed aluminium Quick foaming device, including foaming storehouse, the foaming storehouse side is provided with charging port, the hair
Bubble orlop portion is provided with melt extrusion mouth, can be squeezed out the molten aluminum after the completion of foaming by the melt extrusion mouth；The foaming
At least one side of storehouse lower part is connected with infusion spray gun processed, and the ejection end of the infusion spray gun processed penetrates into inside foaming storehouse, is used for
Infusion processed is sprayed into foaming storehouse, makes to be uniformly filled in bubble in melt molten aluminum；A stripper plate is provided in the foaming storehouse, it is described
It squeezes board ends to be slidably connected on sliding rail, the sliding rail is fixed on foaming storehouse upper inside wall, and the stripper plate top connects
There is cylinder, the expanding-contracting action by controlling cylinder drives stripper plate to move up and down along sliding rail, will complete the molten of foaming in storehouse of foaming
Body molten aluminum is squeezed out by melt extrusion mouth.
Preferably, the infusion spray gun processed is provided with multiple groups, and the volume according to foaming storehouse is of different sizes, is arranged in varying numbers
Infusion spray gun processed, one group of infusion spray gun processed of at least every cubic metre setting in principle；The infusion processed that the infusion spray gun processed sprays
For dry ice, after spraying into dry ice, dry ice cools down melt rapidly from inside from periphery heat absorption, and dry ice heat absorption vaporization generates gas
Bubble is reduced the mobility of aluminum melt, bubble is avoided to float up, which thereby enhanced the equal of foaming due to the cooling retrogradation of melt
Evenness；
Preferably, the foaming storehouse outer wall setting having heaters and attemperator can add the melt in foaming storehouse
Heat heat preservation operation, prevents the melt in foaming storehouse from solidifying completely.
Preferably, the melt extrusion mouth can be set multiple, and realization works at the same time, and improve working efficiency.
Preferably, the bottom in foaming storehouse is arranged in the infusion spray gun processed, can spray into dry ice by the bottom in storehouse of foaming.
Compared with prior art, the beneficial effects of the present invention are: the present invention is driven into foamed melt using dry ice, make to do
Ice heat absorption vaporization rapidly inside foamed melt, generates bubble, while is cooled to foamed melt close to solidification critical point, reduces
Metal foaming fluidity of molten, then preservation and controlling setting rate is carried out, extend foamed time, it so both can be to avoid on bubble
It is floating, and metal foaming melt can be made to continue to complete foaming, foam and liquid layered in metal foaming melt are reduced, finished product is improved
Rate controls rework rate, reduces casting cost.
Detailed description of the invention
Fig. 1 is present system structure chart；
Fig. 2 is present invention ejection cylinder ejector state diagram；
Fig. 3 is that melt extrusion mouth of the present invention squeezes out state diagram；
Fig. 4 is present invention infusion spray gun.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
In description of the invention, it should be noted that the orientation of the instructions such as term "vertical", "upper", "lower", "horizontal" or
Person's positional relationship is orientation based on the figure or positional relationship, is merely for convenience of this practical and simplified description of description,
Rather than the device or element of instruction or hint meaning must have a particular orientation, and are constructed and grasped with specific orientation
Make, therefore is not considered as limiting the invention.In addition, " first ", " second ", " third ", " the 4th " are only used for description mesh
, and should not be understood as indicating or implying relative importance.
In description of the invention, it is also necessary to explanation, unless otherwise specific regulation and limitation, term " setting ", " peace
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection, can be mechanical connection, is also possible to be electrically connected, can be and be directly connected to, and be also possible to be connected by intermediary, can
To be the connection inside two elements.For the ordinary skill in the art, can understand as the case may be above-mentioned
The concrete meaning of term in the present invention.
Embodiment 1
Referring to Fig. 1-4；A kind of continuous foamed system of foamed aluminium, comprising:
Feeding warehouse 101 is provided with discharge port 102 in the bottom of feeding warehouse 101 for storing the melt molten aluminum after thickening；
102 lower horizontal of feeding warehouse is provided with a stirring rod 103, which is mounted on feeding warehouse by bearing assembly 104
On 101 side walls, and the power intake of stirring rod 103 is connected with driven gear 105, and driven gear 105 is connected to by chain 106
It is mounted on the driving gear 202 of 201 output end of driving motor, spiral 203 is promoted by 201 synchronous drive of driving motor and stirs
Mix the rotation of bar 103；Spiral salient 107 and driving lever 108 are arranged at intervals on stirring rod 103, driving lever 108 is obliquely installed, by dialling
Bar 108 is stirred the melt molten aluminum in feeding warehouse 101, and spiral salient 107 pushes melt molten aluminum in rotary course, into
Enter into propelling sleeve 204；Melt molten aluminum is also made not generate clogging in feeding warehouse 101 simultaneously, so that charging is equal
It is even controllable；
Propelling sleeve 204 is located at 101 lower section of feeding warehouse, for being stirred, promoting to melt molten aluminum, and feeding warehouse 101
The discharge port 102 of bottom is connected to the propelling sleeve 204；Propelling sleeve 204 is horizontally disposed, and level is set in propelling sleeve 204
It is equipped with a propulsion spiral 203, the output end of driving motor 201 is connected to outside the propulsion spiral 203, is driven by driving motor 201
Promote the spinning movement of spiral 203；At least one foaming agent adding mouth 205, the foaming agent adding mouth 205 and propelling sleeve 204
Connection, for foaming agent to be added into propelling sleeve 204；Electromagnetic heater 206, energy are provided on 204 outer wall of propelling sleeve
It is enough that Heat preservation is carried out to propelling sleeve 204, prevent molten aluminum from solidifying.
Foaming storehouse 301, is connected to 204 one end of propelling sleeve, and addition is had the melt molten aluminum of foaming agent to stir by propelling sleeve 204
It is pushed into foaming storehouse 301 after mixing uniformly, foams in foaming storehouse 301；Wherein foaming 301 bottom of storehouse is provided with melt extrusion
Mouth 302 can be squeezed out the molten aluminum after the completion of foaming by the melt extrusion mouth 302；Foaming at least one side of 301 bottom of storehouse
It is connected with infusion spray gun 303 processed, the ejection end of the infusion spray gun 303 processed penetrates into inside foaming storehouse 301, is used for foaming storehouse
Infusion processed is sprayed into 301, makes to be uniformly filled in bubble in melt molten aluminum；Infusion spray gun 303 processed is provided with multiple groups, according to foaming storehouse
Volume is of different sizes, and infusion spray gun processed in varying numbers is arranged, in principle one group of infusion spray gun processed of at least every cubic metre setting
303；The infusion processed that infusion spray gun 303 processed sprays is dry ice, and after spraying into dry ice, dry ice obtains melt from internal from periphery heat absorption
To rapid cooling, dry ice heat absorption vaporization generates bubble, due to the cooling retrogradation of melt, reduces the mobility of aluminum melt, avoids gas
Bubble floats up, and which thereby enhances the uniformity of foaming；Foaming is provided with a stripper plate 304,304 both ends of stripper plate in storehouse 301
It is slidably connected on sliding rail 305, sliding rail 305 is fixed on foaming 301 upper inside wall of storehouse, and 304 top of stripper plate is connected with cylinder
306, the expanding-contracting action by controlling cylinder 306 drives stripper plate 304 to move up and down along sliding rail 305, will complete in foaming storehouse 301
The melt molten aluminum of foaming by melt extrusion mouth 302 squeeze out, hence into arrive foaming aluminum form wire；301 outer wall of storehouse that foams is arranged
There is attemperator, heat preservation operation can be carried out to the melt in foaming storehouse 301, prevent the melt in foaming storehouse 301 from solidifying completely.
Foaming aluminum form wire, is set to 301 lower section of foaming storehouse, and the melt extrusion mouth 302 of foaming 301 bottom of storehouse will foam
At molten aluminum be squeezed into foaming aluminum form wire, foamed aluminium is cooled and shaped by foaming aluminum form wire.Foaming aluminum form wire
Including conveying frame 401, it is set to the first transporting flat 402 of 401 leading portion of conveying frame and is set to 401 back segment of conveying frame
The second transporting flat 403, be provided with casting station slot 404 between the first transporting flat 402 and the second transporting flat 403,
A top plate 405 is provided in the casting station slot 404,405 lower part of top plate is connected with ejection cylinder 406, and top plate 405 is located at molten
Immediately below body nozzle 302；By ejecting the stretching motion of cylinder 406, it is able to drive the up and down motion of top plate 405；First conveying
Empty mold 407 to be cast is placed in plane 403, empty mold 407 drives its movement by traction device or driving means, empty
When mold 407 is moved in casting station slot 404, system gives ejection 406 1 signals of cylinder, and ejection cylinder 406 ejects, and makes position
It is contacted in the casting port of the empty mold 407 on top plate 405 with melt extrusion mouth 302, the molten aluminum after the completion of foaming is squeezed into
In empty mold 407, after the completion of movement, cylinder retraction is taken back the mold 408 for being cast with foamed aluminium, with the mould on transporting flat
Tool holding is horizontal and moves forward, meanwhile, the latter sky mold 407 enters casting station slot 404, successively casts
Movement.
Specific steps are as follows:
S1. foaming raw material is got ready, raw material is aluminium, and the device all sprayed coatings that will be contacted with molten aluminum before foaming prevent
Molten aluminum is stained in equipment, and carries out the pre-heat treatment to equipment, and preheating temperature is 300 DEG C.
S2. feeding warehouse 101 will be quantitatively introduced into after melting sources, raw material normal smelting is to 750 DEG C, and simultaneously in feeding warehouse
Suitable thickener is added in 101, molten aluminum is thickened, starts driving motor 201, makes 103 turns of stirring rod in feeding warehouse 101
It is dynamic, the molten aluminum in feeding warehouse 101 is stirred, while under gravity and stirring under the action of pressure, the molten aluminum after thickening into
Enter in propelling sleeve 204；
S3. foaming agent is added from foaming agent adding mouth 205, fills foaming agent with molten aluminum under the action of promoting spiral 203
Divide mixing, as molten aluminum constantly flows into, promotes the rotation of spiral 203 to molten aluminum stirring, promotes, make the aluminium for being added with foaming agent
Liquid enters foaming storehouse 301；
S4. after molten aluminum enters foaming storehouse 301, isothermal holding is carried out to foaming storehouse 301, is maintained at its internal temperature
600 DEG C or so；After molten aluminum reaches setting position, attemperator is closed, starts infusion spray gun 303 processed, is sprayed into molten aluminum dry
Ice, dry ice vaporization heat absorption, generates a large amount of bubbles, since molten aluminum starts to condense, bubble floating is restricted, in molten aluminum in molten aluminum
Outer cooling velocity is close, is uniformly distributed bubble；
S5. after the completion of to be foamed, the empty mold 407 on foaming aluminum form wire is contacted with melt extrusion mouth 302, makes to foam
304 downlink of stripper plate in storehouse 301, is formed being squeezed into sky mold 407 close to the molten aluminum of freezing point with this, is delivered to
Designated position, etc. molten aluminums solidify completely after open mold, take out the foamed aluminium aluminium product that foaming is completed.
The additive amount of the foaming agent is the 0.2% of aluminum feedstock, and foaming agent selects titantium hydride.
Embodiment 2
Referring to Fig. 1-4；A kind of foamed aluminium continuous extrusion foaming system, comprising:
Feeding warehouse 101 is provided with discharge port 102 in the bottom of feeding warehouse 101 for storing the melt molten aluminum after thickening；
102 lower horizontal of feeding warehouse is provided with a stirring rod 103, which is mounted on feeding warehouse by bearing assembly 104
On 101 side walls, and the power intake of stirring rod 103 is connected with driven gear 105, and driven gear 105 is connected to by chain 106
It is mounted on the driving gear 202 of 201 output end of driving motor, spiral 203 is promoted by 201 synchronous drive of driving motor and stirs
Mix the rotation of bar 103；Spiral salient 107 and driving lever 108 are arranged at intervals on stirring rod 103, driving lever 108 is obliquely installed, by dialling
Bar 108 is stirred the melt molten aluminum in feeding warehouse 101, and spiral salient 107 pushes melt molten aluminum in rotary course, into
Enter into propelling sleeve 204；Melt molten aluminum is also made not generate clogging in feeding warehouse 101 simultaneously, so that charging is equal
It is even controllable；
Propelling sleeve 204 is located at 101 lower section of feeding warehouse, for being stirred, promoting to melt molten aluminum, and feeding warehouse 101
The discharge port 102 of bottom is connected to the propelling sleeve 204；Propelling sleeve 204 is horizontally disposed, and level is set in propelling sleeve 204
It is equipped with a propulsion spiral 203, the output end of driving motor 201 is connected to outside the propulsion spiral 203, is driven by driving motor 201
Promote the spinning movement of spiral 203；At least one foaming agent adding mouth 205, the foaming agent adding mouth 205 and propelling sleeve 204
Connection, for foaming agent to be added into propelling sleeve 204；Electromagnetic heater 206, energy are provided on 204 outer wall of propelling sleeve
It is enough that Heat preservation is carried out to propelling sleeve 204, prevent molten aluminum from solidifying.
Foaming storehouse 301, is connected to 204 one end of propelling sleeve, and addition is had the melt molten aluminum of foaming agent to stir by propelling sleeve 204
It is pushed into foaming storehouse 301 after mixing uniformly, foams in foaming storehouse 301；Wherein foaming 301 bottom of storehouse is provided with melt extrusion
Mouth 302 can be squeezed out the molten aluminum after the completion of foaming by the melt extrusion mouth 302；Foaming at least one side of 301 bottom of storehouse
It is connected with infusion spray gun 303 processed, the ejection end of the infusion spray gun 303 processed penetrates into inside foaming storehouse 301, is used for foaming storehouse
Infusion processed is sprayed into 301, makes to be uniformly filled in bubble in melt molten aluminum；Infusion spray gun 303 processed is provided with multiple groups, according to foaming storehouse
Volume is of different sizes, and infusion spray gun processed in varying numbers is arranged, in principle one group of infusion spray gun processed of at least every cubic metre setting
303；The infusion processed that infusion spray gun 303 processed sprays is dry ice, and after spraying into dry ice, dry ice obtains melt from internal from periphery heat absorption
To rapid cooling, dry ice heat absorption vaporization generates bubble, due to the cooling retrogradation of melt, reduces the mobility of aluminum melt, avoids gas
Bubble floats up, and which thereby enhances the uniformity of foaming；Foaming is provided with a stripper plate 304,304 both ends of stripper plate in storehouse 301
It is slidably connected on sliding rail 305, sliding rail 305 is fixed on foaming 301 upper inside wall of storehouse, and 304 top of stripper plate is connected with cylinder
306, the expanding-contracting action by controlling cylinder 306 drives stripper plate 304 to move up and down along sliding rail 305, will complete in foaming storehouse 301
The melt molten aluminum of foaming by melt extrusion mouth 302 squeeze out, hence into arrive foaming aluminum form wire；301 outer wall of storehouse that foams is arranged
There is attemperator, heat preservation operation can be carried out to the melt in foaming storehouse 301, prevent the melt in foaming storehouse 301 from solidifying completely.
Foaming aluminum form wire, is set to 301 lower section of foaming storehouse, and the melt extrusion mouth 302 of foaming 301 bottom of storehouse will foam
At molten aluminum be squeezed into foaming aluminum form wire, foamed aluminium is cooled and shaped by foaming aluminum form wire.Foaming aluminum form wire
Including conveying frame 401, it is set to the first transporting flat 402 of 401 leading portion of conveying frame and is set to 401 back segment of conveying frame
The second transporting flat 403, be provided with casting station slot 404 between the first transporting flat 402 and the second transporting flat 403,
A top plate 405 is provided in the casting station slot 404,405 lower part of top plate is connected with ejection cylinder 406, and top plate 405 is located at molten
Immediately below body nozzle 302；By ejecting the stretching motion of cylinder 406, it is able to drive the up and down motion of top plate 405；First conveying
Empty mold 407 to be cast is placed in plane 403, empty mold 407 drives its movement by traction device or driving means, empty
When mold 407 is moved in casting station slot 404, system gives ejection 406 1 signals of cylinder, and ejection cylinder 406 ejects, and makes position
It is contacted in the casting port of the empty mold 407 on top plate 405 with melt extrusion mouth 302, the molten aluminum after the completion of foaming is squeezed into
In empty mold 407, after the completion of movement, cylinder retraction is taken back the mold 408 for being cast with foamed aluminium, with the mould on transporting flat
Tool holding is horizontal and moves forward, meanwhile, the latter sky mold 407 enters casting station slot 404, successively casts
Movement.
Specific steps are as follows:
S1. foaming raw material is got ready, raw material is aluminium alloy, the device all sprayed coatings that will be contacted with molten aluminum before foaming,
It prevents molten aluminum to be stained in equipment, and the pre-heat treatment is carried out to equipment, preheating temperature is 300 DEG C.
S2. feeding warehouse 101 will be quantitatively introduced into after melting sources, raw material normal smelting is to 750 DEG C, and simultaneously in feeding warehouse
Suitable thickener is added in 101, molten aluminum is thickened, starts driving motor 201, makes 103 turns of stirring rod in feeding warehouse 101
It is dynamic, the molten aluminum in feeding warehouse 101 is stirred, while under gravity and stirring under the action of pressure, the molten aluminum after thickening into
Enter in propelling sleeve 204；
S3. foaming agent is added from foaming agent adding mouth 205, fills foaming agent with molten aluminum under the action of promoting spiral 203
Divide mixing, as molten aluminum constantly flows into, promotes the rotation of spiral 203 to molten aluminum stirring, promotes, make the aluminium for being added with foaming agent
Liquid enters foaming storehouse 301；
S4. after molten aluminum enters foaming storehouse 301, isothermal holding is carried out to foaming storehouse 301, is maintained at its internal temperature
600 DEG C or so；After molten aluminum reaches setting position, attemperator is closed, starts infusion spray gun 303 processed, is sprayed into molten aluminum dry
Ice, dry ice vaporization heat absorption, generates a large amount of bubbles, since molten aluminum starts to condense, bubble floating is restricted, in molten aluminum in molten aluminum
Outer cooling velocity is close, is uniformly distributed bubble；
S5. after the completion of to be foamed, the empty mold 407 on foaming aluminum form wire is contacted with melt extrusion mouth 302, makes to foam
304 downlink of stripper plate in storehouse 301, is formed being squeezed into sky mold 407 close to the molten aluminum of freezing point with this, is delivered to
Designated position, etc. molten aluminums solidify completely after open mold, take out the foamed aluminium aluminium product that foaming is completed.
The additive amount of the foaming agent is the 0.2% of aluminum feedstock, and foaming agent selects titantium hydride.
Wherein, aluminium alloy by mass percentage, is made of the following raw material: lanthanum 0.8%, tungsten carbide 0.2%, iron oxide
15%, copper oxide 2%, nickel oxide 10%, silica 1%, magnesia 5%, surplus are aluminium.
The porosity of foamed aluminium made from the application foam process is 80~85%, and aperture is 2~4mm, bubble produced
Foam aluminum material is processed into 10mm heavy-gauge sheeting, and through detecting, for performance compared with honeycomb aluminum plate, wood based panel, performance is as follows:
| Performance | Foamed aluminium board | Honeycomb aluminum plate | Wood based panel |
| Density/(g/cm3) | <0.6 | >0.7 | <0.8 |
| Bending strength/MPa | 16-24 | 10-16 | 6-12 |
| Sound insulation property/dB | >20 | < 10 | < 10 |
| Fire protecting performance | It does not burn | It does not burn | Burning |
| Isolation property | >1.0 | < 0.5 | Not shock insulation |
| It is collapse resistant | Nothing | Occur | Occasionally have |
| Corrosivity | Non-corrosive | Easily get rusty | Immersion corrosion |
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (1)
1. a kind of foamed aluminium Quick foaming device, characterized by comprising:
Feeding warehouse is provided with discharge port in the bottom of feeding warehouse for storing the melt molten aluminum after thickening；
Feeding warehouse lower horizontal is provided with a stirring rod, which is mounted on feeding warehouse side wall by bearing assembly,
And the power intake of stirring rod is connected with driven gear, driven gear is connected to by chain is mounted on driving motor output end
On driving gear, spiral and stirring rod is promoted to rotate by driving motor synchronous drive；
Spiral salient and driving lever are arranged at intervals on stirring rod, driving lever is obliquely installed, by driving lever to the melt aluminium in feeding warehouse
Liquid is stirred, and spiral salient pushes melt molten aluminum in rotary course, is entered in propelling sleeve；Also make melt simultaneously
Molten aluminum will not generate clogging in feeding warehouse, so that charging uniform, controllable；
Propelling sleeve is located at below feeding warehouse, for being stirred, promoting to melt molten aluminum, and the discharge port of feeding warehouse bottom
It is connected to the propelling sleeve；
Propelling sleeve is horizontally disposed, and being horizontally disposed in propelling sleeve has a propulsion spiral, and driving is connected to outside the propulsion spiral
The output end of motor is driven the spinning movement for promoting spiral by driving motor；
At least one foaming agent adding mouth, the foaming agent adding mouth are connected to propelling sleeve, for hair to be added into propelling sleeve
Infusion；It is provided with electromagnetic heater on propelling sleeve outer wall, Heat preservation can be carried out to propelling sleeve, prevent molten aluminum solidifying
Gu；
Foaming storehouse, is connected to propelling sleeve one end, and addition is had the melt molten aluminum of foaming agent to be pushed into after mixing evenly by propelling sleeve
To foaming storehouse, foam in foaming storehouse；Wherein foam warehouse bottom portion is provided with melt extrusion mouth, will by the melt extrusion mouth
Molten aluminum after the completion of foaming squeezes out；
At least one side of foam warehouse bottom portion is connected with infusion spray gun processed, and the ejection end of the infusion spray gun processed penetrates into foaming storehouse
Portion makes to be uniformly filled in bubble in melt molten aluminum for spraying into infusion processed into foaming storehouse；One group of system of at least every cubic metre setting is steeped
Agent spray gun, the infusion processed that infusion spray gun processed sprays is dry ice, and after spraying into dry ice, dry ice obtains melt from internal from periphery heat absorption
To rapid cooling, dry ice heat absorption vaporization generates bubble, due to the cooling retrogradation of melt, reduces the mobility of aluminum melt, avoids gas
Bubble floats up；
Foaming is provided with a stripper plate in storehouse, squeezes board ends and is slidably connected on sliding rail, and sliding rail is fixed on foaming storehouse inner wall
Portion, and stripper plate top is connected with cylinder, the expanding-contracting action by controlling cylinder drives stripper plate to move up and down along sliding rail, will send out
The melt molten aluminum that foaming is completed in bubble storehouse is squeezed out by melt extrusion mouth, hence into foaming aluminum form wire；Foam storehouse outer wall
It is provided with attemperator；
Foaming aluminum form wire is set to below foaming storehouse, and the melt extrusion mouth in foam warehouse bottom portion squeezes into the molten aluminum that foaming is completed
To foaming aluminum form wire, foamed aluminium is cooled and shaped by foaming aluminum form wire；
Foaming aluminum form wire includes conveying frame, the first transporting flat for being set to conveying frame leading portion and is set to conveying frame
Second transporting flat of back segment is provided with casting station slot, in the casting between the first transporting flat and the second transporting flat
A top plate is provided in station slot, top plate lower part is connected with ejection cylinder, and top plate is located at immediately below melt extrusion mouth；Pass through ejection
The stretching motion of cylinder is able to drive top plate up and down motion；Empty mold to be cast is placed on first transporting flat, empty mold is logical
It crosses traction device or driving means drives its movement, when in empty mold movement to casting station slot, system gives ejection cylinder one
A signal ejects cylinder ejector, contacts the casting port for the empty mold being located on top plate with melt extrusion mouth, and foaming is completed
Molten aluminum afterwards is squeezed into sky mold, and after the completion of movement, cylinder retraction takes back the mold for being cast with foamed aluminium, flat with conveying
Mold holding on face is horizontal and moves forward, meanwhile, the latter sky mold enters casting station slot, is successively poured
Casting movement；
Specific steps are as follows:
S1. foaming raw material is got ready, raw material is aluminium, and the device all sprayed coatings that will be contacted with molten aluminum before foaming prevent molten aluminum
It is stained in equipment, and the pre-heat treatment is carried out to equipment, preheating temperature is 300 DEG C；
S2. feeding warehouse will be quantitatively introduced into after melting sources, raw material normal smelting is added in feeding warehouse simultaneously to 750 DEG C
Suitable thickener thickens molten aluminum, starts driving motor, rotates the stirring rod in feeding warehouse, to the molten aluminum in feeding warehouse
It is stirred, while under gravity and stirring under the action of pressure, the molten aluminum after thickening enters in propelling sleeve；
S3. foaming agent is added from foaming agent adding mouth, is sufficiently mixed foaming agent with molten aluminum under the action of promoting spiral, with
Molten aluminum constantly flows into, and promotes the rotation of spiral to molten aluminum stirring, promotes, the molten aluminum added with foaming agent is made to enter foaming storehouse；
S4. after molten aluminum enters foaming storehouse, isothermal holding is carried out to foaming storehouse, its internal temperature is made to be maintained at 600 DEG C；To molten aluminum
After reaching setting position, attemperator is closed, starts infusion spray gun processed, dry ice, dry ice vaporization heat absorption, in aluminium are sprayed into molten aluminum
A large amount of bubbles are generated in liquid, since molten aluminum starts to condense, bubble floating is restricted, and cooling velocity is close inside and outside molten aluminum, makes gas
Bubble is uniformly distributed；
S5. after the completion of to be foamed, the empty mold on foaming aluminum form wire is contacted with melt extrusion mouth, makes the extruding foamed in storehouse
Plate downlink is formed being squeezed into sky mold close to the molten aluminum of freezing point with this, is delivered to designated position, etc. molten aluminums it is complete
Mold is opened after solidification, takes out the foamed aluminium aluminium product that foaming is completed；
The additive amount of the foaming agent is the 0.2% of aluminum feedstock, and foaming agent selects titantium hydride.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811180599.6A CN109022880B (en) | 2018-10-09 | 2018-10-09 | A kind of foamed aluminium Quick foaming device |
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