CN110042268B - Mould and production equipment for preparing foam sandwich board - Google Patents
Mould and production equipment for preparing foam sandwich board Download PDFInfo
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- CN110042268B CN110042268B CN201910433483.7A CN201910433483A CN110042268B CN 110042268 B CN110042268 B CN 110042268B CN 201910433483 A CN201910433483 A CN 201910433483A CN 110042268 B CN110042268 B CN 110042268B
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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
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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
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Abstract
The invention discloses a mold for preparing a foam sandwich plate and production equipment. The production equipment comprises a box-type furnace, a tube-type furnace, a stirring paddle lifting device, a speed-adjustable motor, a first temperature zone temperature regulator, a second temperature zone temperature regulator, a third temperature zone temperature regulator, a box-type furnace temperature regulator, a cooling object flow rate regulator, a mold lifting device, a resistance wire, a mold, a first temperature zone baffle, a second temperature zone baffle and a third temperature zone baffle. On the basis of a melt foaming method, the closed-cell foam metal sandwich plate is formed at one time by controlling the surface temperature and the internal temperature of a melt; the production of the sandwich plates with the same plate thickness and different foam layer thicknesses is realized by adjusting the flow velocity of the cooling material, and the production of the sandwich plates with different plate thicknesses is realized by adjusting the thickness of the gasket between the male die and the female die.
Description
Technical Field
The invention relates to the field of plate processing, in particular to a mold for preparing a foam sandwich plate and production equipment.
Background
The foam metal is a porous metal material which forms a countless three-dimensional space net-shaped structure in a metal matrix, has the characteristics of metal characteristics and some special physical properties of nonmetal, is a structure-function integrated material, has the characteristics of low density, high porosity and the like, has high specific strength, energy absorption, electromagnetic shielding, structural damping performance and the like in performance, is an optional material for instruments and devices with different structures, is widely applied to the fields of automobiles, buildings and aerospace, and has the defects of rough surface, low surface elastic modulus, low assembly performance and the like so as to limit the application of the foam metal.
The foam sandwich board mainly uses foam metal as a sandwich board of a sandwich material, can well solve the problems and is widely applied to the fields of electromagnetic shielding, energy absorption, noise reduction and the like. The sandwich plate material with foamed metal as sandwich material is prepared through the following steps: one method is to load metal powder, mixed powder of metal powder and foaming agent, and metal powder into a die in sequence, and heat and foam the metal powder by a hot pressing method, etc. to obtain a foamed metal sandwich plate. Secondly, the composite material of the metal plate-foam metal precast slab is obtained by hot pressing, rolling and other methods and then foamed, but the foam metal surface has a porous structure, so that the interface combination degree is not high, the service life of the plate is reduced, the size of the surface metal plate cannot be effectively controlled, and the two methods belong to powder metallurgy methods. In addition, the panels are mechanically or physically bonded to the foam metal, such as by screwing, riveting, gluing, etc., but such methods are limited by the bonding material, and the panels may fail with the bonding material.
The document with application number 201010233462.X discloses a preparation method of a foamed aluminum sandwich plate, which comprises the steps of rolling a thin-wall steel (aluminum alloy) tube filled with aluminum-silicon alloy powder, a foaming agent and magnesium powder mixed powder on a cold rolling mill at a low speed to obtain a composite plate, cutting the composite plate according to the size of a mold to prepare a prefabricated blank, and heating and foaming the prefabricated blank in a steel mold to obtain the sandwich plate. The preparation method has the defects that the pipe needs to be cleaned before compounding, the pipe cannot be formed at one time, the process flow is complex, the cost is high, the components of the metal plate and the sandwich layer are inconsistent, and stress concentration is easily generated in the using process to influence the service life.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to solve the technical problem of providing a mould and production equipment for preparing a foam sandwich board.
The technical scheme for solving the technical problem of the mould is to provide the mould for preparing the foam sandwich plate, and the mould is characterized by comprising a mandril, a female mould fixing plate, a female mould, a male mould and a male mould fixing plate;
the male die fixing plate is fixedly connected with the male die; the female die fixing plate is fixedly connected with the female die; a space formed by the female die and the male die is a cavity used for molding the foam sandwich board; cooling water channels are formed in the positions, close to the cavity, of the male die and the female die and used for circulating cooling objects; the side wall of the female die is provided with a through vent hole which is arranged on two sides of the central area of the cavity; the ejector rod is arranged in the through hole of the female die, forms a moving pair with the female die, can slide in the through hole and is used for taking out a finished foam sandwich board.
The invention provides production equipment for preparing a foam sandwich plate, which is characterized by comprising a box-type furnace shell, a tubular furnace shell, a stirring paddle lifting device, a speed-adjustable motor, a main body frame, a first temperature zone temperature regulator, a second temperature zone temperature regulator, a third temperature zone temperature regulator, a box-type furnace temperature regulator, a cooling object flow rate regulator, a mold lifting device, a box-type furnace resistance wire, a mold, a tubular furnace resistance wire, a first temperature zone baffle, a second temperature zone baffle, a third temperature zone baffle, a tubular furnace cavity and a box-type furnace cavity;
the stirring paddle lifting device is arranged at the top of the main body frame; the adjustable-speed motor is fixed at the end part of the stirring paddle lifting device, and the output end of the adjustable-speed motor is fixed with the stirring paddle; the tubular furnace shell is fixed in the middle of the main body frame and is positioned below the stirring paddle; the tubular furnace cavity is fixed inside the tubular furnace shell; the stirring paddle can extend into the cavity of the tube furnace; a first temperature zone, a second temperature zone and a third temperature zone are sequentially arranged in the tubular furnace cavity from top to bottom; the first temperature zone and the second temperature zone are separated by a first temperature zone baffle, and the second temperature zone and the third temperature zone are separated by a second temperature zone baffle to form three independent temperature zones; a ceramic wall is fixed on the inner wall of the cavity of the tube furnace of each temperature zone, and a resistance wire of the tube furnace is arranged between the ceramic wall and the inner wall of the cavity of the tube furnace; the first temperature zone temperature regulator is electrically connected with the resistance wire of the tube furnace in the first temperature zone; the temperature regulator of the second temperature zone is electrically connected with the resistance wire of the tube furnace of the second temperature zone; the temperature regulator of the third temperature zone is electrically connected with the resistance wire of the tube furnace of the third temperature zone;
the box-type furnace shell is fixed at the lower part of the main body frame, positioned below the tubular furnace shell and communicated with the tubular furnace shell; the box-type furnace cavity is fixed inside the box-type furnace shell; the top of the box-type furnace cavity is communicated with a third temperature zone of the tube-type furnace cavity and is separated by a third temperature zone baffle; resistance wires of the box-type furnace are uniformly distributed and fixed on the inner wall of the cavity of the box-type furnace; the mould is placed in the cavity of the box-type furnace; the box-type furnace temperature regulator is electrically connected with the box-type furnace resistance wire; the male die fixing plate is matched with a push-pull groove on the inner side of the top of the box-type furnace shell, and the male die fixing plate and the push-pull groove form a moving pair to realize translational taking and placing of a male die; the mould lifting device is arranged at the lower end in the box-type furnace shell, and the lifting end of the mould lifting device is connected with the female die fixing plate and used for realizing the lifting of the female die; one end of the cooling water channel is communicated with one end of the cooling object connecting pipe, and the other end of the cooling water channel flows out of the mold; the other end of the cooling object connecting pipe is communicated with a cooling object source; the cooling material flow rate regulator is installed on the cooling material connecting pipe.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention is different from the traditional powder metallurgy method for preparing the foam sandwich panel, and realizes the one-step molding of the closed-cell foam metal sandwich panel by controlling the surface temperature and the internal temperature of the melt on the basis of the melt foaming method; the production of the sandwich plates with the same plate thickness and different foam layer thicknesses is realized by adjusting the flow velocity of the cooling material, and the production of the sandwich plates with different plate thicknesses is realized by adjusting the thickness of the gasket between the male die and the female die. The components of the foam sandwich layer and the external compact metal layer of the product obtained by the equipment are similar, and the interface metallurgical bonding is good.
2. The mold is a metal mold casting mold, and different from the traditional pouring method, the metal melt directly falls into the female mold and then is pushed into the male mold to form a cavity. The whole die adopts Ni3The Al-based high-temperature alloy has the advantages of low thermal expansion coefficient, high strength, high use temperature and the like, has high casting precision, provides conditions for preparing various materials of foam sandwich plates, and can ensure the stability of a die under the condition of repeated heating and chilling, thereby improving the performance of the casting.
3. The mold is provided with the exhaust holes which are arranged at the centers of the left side and the right side of the cavity, so that under the condition of air pressure difference, gas is more concentrated in the center layer of the cavity, the foaming rate of the foam metal of the sandwich layer is ensured, the density of metal on the surface of a casting is improved, the pores of the sandwich layer are uniform, and the pore size is controllable.
4. Adopts a tube furnace-box furnace vertical complete equipment. The transfer of molten metal in the equipment is realized by independently controlling the temperature of different temperature zones of the tubular furnace, the integration of metal smelting, stirring, foaming and molding is realized, the large-range transfer of molten metal is avoided in the preparation process, and the safety coefficient is high.
5. The apparatus has a ceramic wall. The ceramic has high heat-resisting temperature, the surface of the ceramic is not easy to be bonded with the metal melt, the melt flow is facilitated, and the loss of raw materials is reduced.
6. Compared with the traditional foam board preparation equipment, the vertical production equipment has the advantages of compact layout, small equipment floor area, simpler process and safe and reliable operation process.
Drawings
FIG. 1 is a schematic front view of the overall structure of a mold according to an embodiment of the present invention;
FIG. 2 is a schematic front view of the overall structure of a mold according to another embodiment of the present invention;
FIG. 3 is a schematic sectional front view of the overall structure of the apparatus according to an embodiment of the present invention;
FIG. 4 is a right-side view schematically illustrating the overall structure of the apparatus according to an embodiment of the present invention;
FIG. 5 is a top surface pictorial view of an aluminum foam sandwich panel made in accordance with example 1 of the present invention;
FIG. 6 is a pictorial view of a lower surface of an aluminum foam sandwich panel made in accordance with example 1 of the present invention;
FIG. 7 is a pictorial representation of a sandwich layer of an aluminum foam sandwich panel made in accordance with example 1 of the present invention.
In the figure: 1. a control console of the stirring paddle lifting device; 2. positioning the flange; 3. a flange is fixed on the cavity of the tube furnace; 4. a temperature control console; 5. a chill flow rate console; 6. a box-type furnace shell; 7. a movable wheel; 8. a protective gas access hole; 9. a tube furnace housing; 10. a stirring paddle; 11. a stirring paddle lifting device; 12. a speed adjustable motor; 13. a main body frame; 14. a first temperature zone temperature regulator; 15. a second temperature zone temperature regulator; 16. a third temperature zone temperature regulator; 17. a box-type furnace temperature regulator; 18. a cooler flow rate regulator; 19. a coolant connection pipe; 20. a mold lifting device; 21. resistance wires of the box-type furnace; 22. a mold; 23. a tube furnace resistance wire; 24. a first temperature zone baffle; 25. a second temperature zone baffle; 26. a third temperature zone baffle; 27. a tube furnace cavity; 28. a box-type furnace cavity;
22-1, a cooling water channel; 22-2, exhaust holes; 22-3, a mandril; 22-4, fixing a female die plate; 22-5, a concave die; 22-6, male die; 22-7, a male die fixing plate; 22-8, a cavity; 22-9, a gasket;
Detailed Description
Specific examples of the present invention are given below. The specific examples are only intended to illustrate the invention in further detail and do not limit the scope of protection of the claims of the present application.
The invention provides a mould (for short, see fig. 1-2) for preparing a foam sandwich board, which is characterized in that the mould 22 comprises a mandril 22-3, a female die fixing plate 22-4, a female die 22-5, a male die 22-6 and a male die fixing plate 22-7;
the male die fixing plate 22-7 is fixedly connected with the male die 22-6; the female die fixing plate 22-4 is fixedly connected with the female die 22-5; a space formed by the female die 22-5 and the male die 22-6 is a cavity 22-8, and the cavity 22-8 is used for molding the foam sandwich board; cooling water channels 22-1 are respectively arranged at the positions of the male die 22-6 and the female die 22-5 close to the cavity 22-8, and the cooling water channels 22-1 are used for circulating cooling objects; the side wall of the female die 22-5 is provided with through vent holes 22-2 which are arranged at two sides of the central area of the die cavity 22-8, and the vent holes 22-2 ensure that the pressure difference exists between the central area of the die cavity and the upper and lower areas as well as between the central area and the box-type furnace cavity 28, so that gas is easy to gather at the center of the die cavity in the foaming process of metal liquid, the foaming rate of metal of a sandwich layer is ensured, the foaming of the upper and lower surfaces of melt in the die cavity is inhibited, and the density of metal on the surface of a casting is improved; the ejector rod 22-3 is arranged in a through hole of the female die 22-5, forms a moving pair with the female die 22-5, can slide in the through hole and is used for taking out a finished foam sandwich board.
Preferably, the left side of the male die 22-6 is provided with a groove for matching with the left side bulge of the female die 22-5; the sum of the height of the right side bulge of the female die 22-5 and the depth of the left side groove of the male die 22-6 is the height of the left side bulge of the female die 22-5, so that a cavity 22-8 is formed;
preferably, the ejector rod 22-3 is positioned at the geometric center of the female die 22-5, namely the geometric center of the casting; the end part of the ejector rod 22-3 is flush with the bottom surface of the inner cavity of the female die 22-5 and is used for ejecting the finished foam sandwich plate without influencing the quality of the finished product;
preferably, the size of the cavity 22-8 can be realized by additionally arranging gaskets 22-9 around the concave die 22-5; the gaskets 22-9 are uniformly arranged around the female die 22-5, the male die 22-6 is contacted with the gaskets 22-9, the height of the die cavity 22-8 is increased, and therefore the foam sandwich boards with different thicknesses are manufactured; the thickness of the casting is preferably 50-200 mm;
the invention also provides production equipment (for short, see fig. 3-4) for preparing the foam sandwich board, which is characterized by comprising a box-type furnace shell 6, a tube-type furnace shell 9, a stirring paddle 10, a stirring paddle lifting device 11, a speed-adjustable motor 12, a main body frame 13, a first temperature zone temperature regulator 14, a second temperature zone temperature regulator 15, a third temperature zone temperature regulator 16, a box-type furnace temperature regulator 17, a cooling object flow rate regulator 18, a mold lifting device 20, a box-type furnace resistance wire 21, a mold 22, a tube-type furnace resistance wire 23, a first temperature zone baffle 24, a second temperature zone baffle 25, a third temperature zone baffle 26, a tube-type furnace cavity 27 and a box-type furnace cavity 28;
the stirring paddle lifting device 11 is arranged at the top of the main body frame 13; the speed-adjustable motor 12 is fixed at the end part of the stirring paddle lifting device 11, and the output end of the speed-adjustable motor is fixed with the stirring paddle 10; the tubular furnace shell 9 is fixed in the middle of the main body frame 13 and is positioned below the stirring paddle 10; the tube furnace cavity 27 is fixed inside the tube furnace shell 9; the tubular furnace cavity 27 is hollow, and the stirring paddle 10 can extend into the tubular furnace cavity 27 to stir the materials; a first temperature zone, a second temperature zone and a third temperature zone are sequentially arranged in the tube furnace cavity 27 from top to bottom, wherein the first temperature zone is used for smelting metal, the second temperature zone is used for viscosity increasing of molten metal, and the third temperature zone is used for heating; the first temperature zone and the second temperature zone are separated by a first temperature zone baffle plate 24, and the second temperature zone and the third temperature zone are separated by a second temperature zone baffle plate 25 to form three independent temperature zones; a ceramic wall is fixed on the inner wall of the tube furnace cavity 27 of each temperature zone, and a tube furnace resistance wire 23 is arranged between the ceramic wall and the inner wall of the tube furnace cavity 27; the first temperature zone temperature regulator 14 is electrically connected with the tube furnace resistance wire 23 of the first temperature zone and is used for regulating the temperature of the first temperature zone; the second temperature zone temperature regulator 15 is electrically connected with the tubular furnace resistance wire 23 of the second temperature zone and is used for regulating the temperature of the second temperature zone; the third temperature zone temperature regulator 16 is electrically connected with the tubular furnace resistance wire 23 of the third temperature zone and is used for regulating the temperature of the third temperature zone;
the box-type furnace shell 6 is fixed at the lower part of the main body frame 13, positioned below the tubular furnace shell 9 and communicated with the tubular furnace shell 9; the box-type furnace cavity 28 is fixed inside the box-type furnace shell 6; the box-type furnace cavity 28 is a cavity which is hollow inside and has no upper and lower top covers, the top of the box-type furnace cavity is communicated with the third temperature zone of the tubular furnace cavity 27, and the box-type furnace cavity is separated by a third temperature zone baffle 26; box-type furnace resistance wires 21 are uniformly distributed and fixed on the inner wall of the box-type furnace cavity 28; the mold 22 is placed inside the chamber 28 of the box furnace; the box-type furnace temperature regulator 17 is electrically connected with the box-type furnace resistance wire 21 and is used for regulating the temperature in the box-type furnace cavity 28; the male die fixing plate 22-7 is fixedly connected with the male die 22-6; the male die fixing plate 22-7 is matched with a push-pull groove on the inner side of the top of the box-type furnace shell 6, and the male die fixing plate and the push-pull groove form a moving pair, so that the male die 22-6 can slide out of the box-type furnace, and the male die 22-6 can be horizontally taken and placed; the female die fixing plate 22-4 is fixedly connected with the female die 22-5; the mould lifting device 20 is fixed at the lower end inside the box-type furnace shell 6, and the lifting end of the mould lifting device is clamped or in contact connection with the female die fixing plate 22-4 and used for lifting the female die 22-5; a space formed by the female die 22-5 and the male die 22-6 is a cavity 22-8, and the cavity 22-8 is used for molding the foam sandwich board; snakelike cooling water channels 22-1 are formed in the positions, close to the cavity 22-8, of the male die 22-6 and the female die 22-5, one end of each cooling water channel 22-1 is communicated with one end of the cooling object connecting pipe 19, and the other end of each cooling water channel is connected with a pipeline and flows out of the die 22; the other end of the coolant connecting pipe 19 is communicated with a coolant source; the cooling object flow rate regulator 18 is arranged on the cooling object connecting pipe 19 and is used for realizing the on-off of the cooling object connecting pipe 19 and regulating the flow rate of the cooling object in the cooling water channel 22-1; the side wall of the female die 22-5 is provided with through vent holes 22-2 which are arranged at two sides of the central area of the cavity 22-8, and the vent holes 22-2 ensure that the pressure difference exists between the central area of the cavity and the upper and lower areas as well as between the central area and the cavity 28 of the box furnace, so that gas is easy to gather at the center of the cavity in the foaming process; the ejector rod 22-3 is arranged in a through hole of the female die 22-5, forms a moving pair with the female die 22-5, can slide in the through hole and is used for taking out a finished foam sandwich board.
Preferably, the equipment also comprises a stirring paddle lifting device control platform 1, a temperature control platform 4 and a cooling object flow rate control platform 5; the stirring paddle lifting device control platform 1, the temperature control platform 4 and the cooling object flow rate control platform 5 are all arranged in the main body frame 13; the stirring paddle lifting device 11 is electrically connected with the lifting device control platform 1 and is controlled by the lifting device control platform 1 to realize lifting; the temperature control table 4 is respectively and electrically connected with a first temperature zone temperature regulator 14, a second temperature zone temperature regulator 15, a third temperature zone temperature regulator 16 and a box-type furnace temperature regulator 17 and is used for inputting and controlling temperature parameters; the cooling object flow rate control stage 5 is electrically connected to a cooling object flow rate regulator 18.
Preferably, the apparatus further comprises a movable wheel 7; the movable wheel 7 is arranged at the bottom of the main body frame 13 through a base and used for pushing and placing equipment, and the movable wheel 7 is provided with a parking device, so that the stability of the equipment in the using process can be ensured.
Preferably, the apparatus further comprises a tube furnace cavity mounting flange 3; the tube furnace cavity fixing flange 3 is respectively fixedly connected with the tube furnace shell 9 and the tube furnace cavity 27 and used for fixing and positioning the tube furnace cavity 27; the middle part of the tubular furnace cavity fixing flange 3 is provided with a through hole for the stirring paddle 10 to pass through;
preferably, the device further comprises a positioning flange 2; the positioning flange 2 is fixed on the tubular furnace cavity fixing flange 3, and the middle part of the positioning flange is provided with a through hole for positioning the stirring paddle 10; the feeding is detachable;
preferably, the stirring blade at the end of the stirring paddle 10 is a movable blade, which can be detached and replaced; the stirring paddle 10 is provided with a feeding groove and is used by the stirring paddleThe material is Ni3The Al-based high-temperature alloy has higher specific strength and compressive strength and can bear higher pressure.
Preferably, the chamber 28 is provided with a protective gas inlet 8 for preventing oxidation of metal and combustion of combustible metal such as magnesium alloy during foaming and forming of the molten metal, and for facilitating entry of molten metal into the cavity by creating a pressure difference between the tube furnace and the chamber.
Preferably, the tubular furnace cavity 27 and the box furnace cavity 28 are made of alumina fiber products, and the extremely low thermal conductivity and specific heat capacity of the alumina fiber products ensure the rapid temperature rise and low heat storage of the hearth. The resistance wire heating is suitable for medium and low temperature heating systems.
The centers of the paddle 10, the tube furnace cavity 27 and the die 22 are located on the same vertical axis.
The temperature control stage 4 employs a classical closed loop negative feedback control system.
The tube furnace is used for smelting and stirring raw materials; the box furnace is used for foaming raw materials and forming castings.
The working principle and the working process of the invention are as follows:
firstly, the stirring paddle 10 is lifted out of the tubular furnace cavity 27 by the stirring paddle lifting device console 1, each temperature zone of the tubular furnace cavity 27 and the box-type furnace cavity 28 are heated to the required temperature, protective gas is introduced into the box-type furnace cavity 28 through the protective gas inlet hole 8, and at the moment, the three baffles are all pushed into the furnace body.
And (3) putting the metal into the first temperature zone of the cavity 27 of the tube furnace to be melted into molten metal, pushing out the baffle plate 24 of the first temperature zone, closing the temperature regulator 14 of the first temperature zone, and enabling the molten metal to enter the second temperature zone. After the temperature of the melt is stable, sequentially adding the tackifier and the foaming agent into the second temperature zone of the cavity 27 of the tube furnace, stirring by using the stirring paddle 10, opening the baffle 25 of the second temperature zone, closing the temperature regulator 15 of the second temperature zone, and allowing the molten metal to enter the third temperature zone for heat preservation.
And (3) lifting the stirring paddle 10 out and replacing the stirring blade as a pressure head, opening the baffle 26 of the third temperature zone, conveying the molten metal into the open female die 22-5 by utilizing the thrust of the pressure head and the self gravity of the molten metal, and closing the temperature regulator 16 of the third temperature zone. And after the molten metal completely enters the female die 22-5, the female die 22-5 is descended by the die lifting device 20, the male die 22-6 is pushed in by utilizing a push-pull groove on the inner side of the top of the box-type furnace shell 6, the female die 22-5 is lifted to be combined with the male die 22-6 to form a cavity 22-8 by the die lifting device 20, after the heat is preserved for a proper time, the box-type furnace temperature regulator 17 is closed, and a cooling object is introduced into the cooling water channel 22-1 through the cooling object connecting pipe 19.
The thickness of the dense metal layers on the upper and lower surfaces of the foam sandwich panel is regulated by the flow rate of the cooling material controlled by the cooling material flow rate regulator 18. After the mold 22 is cooled, the male mold 22-6 is taken out by using a push-pull groove on the inner side of the top of the box-type furnace shell 6, the female mold 22-5 is lifted by the mold lifting device 20, and the female mold 22-5 is taken out. And ejecting the finished foam sandwich plate by utilizing the ejector rods 22-3.
Example 1
Firstly, the stirring paddle 10 is lifted out of the tubular furnace cavity 27 by the stirring paddle lifting device console 1, the first temperature zone of the tubular furnace cavity 27 is heated to 700 ℃, the second temperature zone is heated to 600 ℃, the third temperature zone is heated to 650 ℃, the box-type furnace cavity 28 is heated to 650 ℃, protective gas is introduced into the box-type furnace cavity 28 through the protective gas inlet hole 8, and at the moment, the three baffles are all pushed into the furnace body.
And (3) putting 400g of aluminum blocks into the first temperature zone of the tubular furnace cavity 27, preserving heat for 60min, pushing out the first temperature zone baffle plate 24 after the aluminum blocks are completely melted into aluminum liquid, closing the first temperature zone temperature regulator 14, and allowing the molten metal to enter the second temperature zone. After the temperature of the aluminum liquid is stable, adding 0.4% by mass of calcium particle tackifier into the second temperature zone of the tubular furnace cavity 27, stirring at the rotating speed of 400r/min for 4min, adding 0.6% by mass of titanium hydride foaming agent, stirring at the rotating speed of 800r/min for 1min, opening the baffle 25 of the second temperature zone, closing the temperature regulator 15 of the second temperature zone, and allowing the molten metal to enter the third temperature zone for heat preservation.
And (3) lifting the stirring paddle 10 out and replacing the stirring blade as a pressure head, opening the baffle 26 of the third temperature zone, conveying the molten metal into the open female die 22-5 by utilizing the thrust of the pressure head and the self gravity of the molten metal, and closing the temperature regulator 16 of the third temperature zone. And after the molten metal completely enters the female die 22-5, the female die 22-5 is descended by the die lifting device 20, the male die 22-6 is pushed in by utilizing a push-pull groove on the inner side of the top of the box-type furnace shell 6, the female die 22-5 is lifted by the die lifting device 20 to be combined with the male die 22-6 to form a cavity 22-8, after heat preservation is carried out for 30s, the box-type furnace temperature regulator 17 is closed, and a cooling object is introduced into the cooling water channel 22-1 through the cooling object connecting pipe 19.
The thickness of the dense metal layers on the upper and lower surfaces of the foam sandwich panel is regulated by the flow rate of the cooling material controlled by the cooling material flow rate regulator 18. After the mold 22 is cooled, the male mold 22-6 is taken out by using a push-pull groove on the inner side of the top of the box-type furnace shell 6, the female mold 22-5 is lifted by the mold lifting device 20, and the female mold 22-5 is taken out. And ejecting the finished product of the foam sandwich aluminum plate by utilizing the ejector rods 22-3.
It can be seen from fig. 5 and 6 that the upper and lower surfaces of the foamed sandwich aluminum sheet product are all compact metal layers without obvious air holes, and it can be seen from fig. 7 that the foamed sandwich aluminum sheet product center is a foamed aluminum sandwich layer, and the sandwich layer has high porosity and uniform distribution and size of the air holes.
Nothing in this specification is said to apply to the prior art.
Claims (10)
1. Production equipment for preparing a foam sandwich plate is characterized by comprising a box-type furnace shell, a tubular furnace shell, a stirring paddle lifting device, a speed-adjustable motor, a main body frame, a first temperature zone temperature regulator, a second temperature zone temperature regulator, a third temperature zone temperature regulator, a box-type furnace temperature regulator, a cooling object flow rate regulator, a mold lifting device, a box-type furnace resistance wire, a mold, a tubular furnace resistance wire, a first temperature zone baffle, a second temperature zone baffle, a third temperature zone baffle, a tubular furnace cavity and a box-type furnace cavity;
the stirring paddle lifting device is arranged at the top of the main body frame; the adjustable-speed motor is fixed at the end part of the stirring paddle lifting device, and the output end of the adjustable-speed motor is fixed with the stirring paddle; the tubular furnace shell is fixed in the middle of the main body frame and is positioned below the stirring paddle; the tubular furnace cavity is fixed inside the tubular furnace shell; the stirring paddle can extend into the cavity of the tube furnace; a first temperature zone, a second temperature zone and a third temperature zone are sequentially arranged in the tubular furnace cavity from top to bottom; the first temperature zone and the second temperature zone are separated by a first temperature zone baffle, and the second temperature zone and the third temperature zone are separated by a second temperature zone baffle to form three independent temperature zones; a ceramic wall is fixed on the inner wall of the cavity of the tube furnace of each temperature zone, and a resistance wire of the tube furnace is arranged between the ceramic wall and the inner wall of the cavity of the tube furnace; the first temperature zone temperature regulator is electrically connected with the resistance wire of the tube furnace in the first temperature zone; the temperature regulator of the second temperature zone is electrically connected with the resistance wire of the tube furnace of the second temperature zone; the temperature regulator of the third temperature zone is electrically connected with the resistance wire of the tube furnace of the third temperature zone;
the box-type furnace shell is fixed at the lower part of the main body frame, positioned below the tubular furnace shell and communicated with the tubular furnace shell; the box-type furnace cavity is fixed inside the box-type furnace shell; the top of the box-type furnace cavity is communicated with a third temperature zone of the tube-type furnace cavity and is separated by a third temperature zone baffle; resistance wires of the box-type furnace are uniformly distributed and fixed on the inner wall of the cavity of the box-type furnace; the mould is placed in the cavity of the box-type furnace; the box-type furnace temperature regulator is electrically connected with the box-type furnace resistance wire; a male die fixing plate of the die is matched with a push-pull groove on the inner side of the top of the box-type furnace shell, and the male die fixing plate and the push-pull groove form a moving pair to realize the translational taking and placing of the male die; the mould lifting device is arranged at the lower end in the box-type furnace shell, and the lifting end of the mould lifting device is connected with the female die fixing plate and used for realizing the lifting of the female die; one end of the cooling water channel is communicated with one end of the cooling object connecting pipe, and the other end of the cooling water channel flows out of the mold; the other end of the cooling object connecting pipe is communicated with a cooling object source; the cooling material flow rate regulator is installed on the cooling material connecting pipe.
2. The production equipment for preparing the foam sandwich panel according to claim 1, wherein the mold comprises a mandril, a female mold fixing plate, a female mold, a male mold and a male mold fixing plate;
the male die fixing plate is fixedly connected with the male die; the female die fixing plate is fixedly connected with the female die; a space formed by the female die and the male die is a cavity used for molding the foam sandwich board; cooling water channels are formed in the positions, close to the cavity, of the male die and the female die and used for circulating cooling objects; the side wall of the female die is provided with a through vent hole which is arranged on two sides of the central area of the cavity; the ejector rod is arranged in the through hole of the female die, forms a moving pair with the female die, can slide in the through hole and is used for taking out a finished foam sandwich board.
3. The production equipment for preparing the foam sandwich panel according to claim 2, wherein the end part of the ejector rod is flush with the bottom surface of the cavity of the female die and is used for ejecting the finished foam sandwich panel without affecting the quality of the finished foam sandwich panel.
4. The production equipment for preparing the foam sandwich board according to claim 2, wherein the size of the cavity can be realized by additionally arranging gaskets on the periphery of the female die; the gaskets are uniformly arranged around the female die, and the male die is in contact with the gaskets to increase the height of the cavity.
5. The apparatus for producing a foam sandwich panel according to claim 1, wherein the apparatus further comprises a paddle lifting device console, a temperature console and a coolant flow rate console; the stirring paddle lifting device control platform, the temperature control platform and the cooling object flow rate control platform are all arranged in the main body frame; the stirring paddle lifting device is electrically connected with the lifting device console; the temperature control console is electrically connected with the first temperature zone temperature regulator, the second temperature zone temperature regulator, the third temperature zone temperature regulator and the box-type furnace temperature regulator respectively; the cooling object flow rate control platform is electrically connected with the cooling object flow rate regulator.
6. The apparatus for producing a foam sandwich panel according to claim 1, wherein the apparatus further comprises a movable wheel; the movable wheel is arranged at the bottom of the main body frame through the base; the movable wheels are provided with parking devices, so that the stability of the equipment in the use process can be ensured.
7. The apparatus for producing the foam sandwich panel according to claim 1, wherein the apparatus further comprises a tube furnace cavity fixing flange and a positioning flange; the tubular furnace cavity fixing flange is fixedly connected with the tubular furnace shell and the tubular furnace cavity respectively and used for fixing and positioning the tubular furnace cavity; the middle part of the fixing flange of the cavity of the tubular furnace is provided with a through hole for the stirring paddle to pass through; the positioning flange is fixed on the fixing flange of the cavity of the tubular furnace, and the middle part of the positioning flange is provided with a through hole for positioning the stirring paddle; the feeding is detachable.
8. The production equipment for preparing the foam sandwich panel according to claim 1, wherein the stirring blade at the end part of the stirring paddle is a movable blade which can be detachably replaced; the stirring paddle is provided with a feeding groove.
9. The apparatus for producing a foam sandwich panel according to claim 1, wherein the chamber of the chamber is provided with a protective gas inlet hole for preventing oxidation of the metal and combustion of the inflammable metal during the foaming process of the molten metal and causing a pressure difference between the tube furnace and the chamber furnace to facilitate the entry of the molten metal into the cavity.
10. The apparatus for producing the foam sandwich panel according to claim 1, wherein the tubular furnace chamber and the box furnace chamber are made of alumina fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910433483.7A CN110042268B (en) | 2019-05-23 | 2019-05-23 | Mould and production equipment for preparing foam sandwich board |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910433483.7A CN110042268B (en) | 2019-05-23 | 2019-05-23 | Mould and production equipment for preparing foam sandwich board |
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| Publication Number | Publication Date |
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| CN110042268A CN110042268A (en) | 2019-07-23 |
| CN110042268B true CN110042268B (en) | 2020-12-25 |
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| CN201910433483.7A Expired - Fee Related CN110042268B (en) | 2019-05-23 | 2019-05-23 | Mould and production equipment for preparing foam sandwich board |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111421762A (en) * | 2019-12-31 | 2020-07-17 | 刘家叶 | Mold convenient for height adjustment for automobile production and preparation method thereof |
| CN113134936B (en) * | 2020-01-20 | 2024-01-30 | 正合林兴业股份有限公司 | Telescopic mold structure and foaming preparation method thereof |
| CN113305282B (en) * | 2021-04-27 | 2022-08-26 | 山东高速高新材料科技有限公司 | Foamed aluminum production process based on electrified production equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103060594B (en) * | 2013-02-01 | 2014-11-05 | 河北工业大学 | Complete equipment for producing foam aluminum |
| CN203665808U (en) * | 2013-12-21 | 2014-06-25 | 顾志元 | Energy-saving and efficient foaming molding die |
| CN105750530B (en) * | 2016-05-12 | 2018-07-13 | 河北工业大学 | A kind of mold and production equipment preparing foam metal pipe |
| CN206510310U (en) * | 2016-10-31 | 2017-09-22 | 江阴市乐牛环保新材料科技有限公司 | A kind of grid strengthens the foaming-shaping apparatus of pallet inner core |
| CA3081330A1 (en) * | 2017-10-31 | 2019-05-09 | MELD Manufacturing Corporation | Solid-state additive manufacturing system and material compositions and structures |
| KR101955670B1 (en) * | 2018-07-10 | 2019-03-07 | (주)케이엔지코리아 | Formed aluminum buoy with hollow cavity and manufacturing method of it |
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