CN113862501A - Through-hole foamed aluminum plate and preparation method thereof - Google Patents
Through-hole foamed aluminum plate and preparation method thereof Download PDFInfo
- Publication number
- CN113862501A CN113862501A CN202111153670.3A CN202111153670A CN113862501A CN 113862501 A CN113862501 A CN 113862501A CN 202111153670 A CN202111153670 A CN 202111153670A CN 113862501 A CN113862501 A CN 113862501A
- Authority
- CN
- China
- Prior art keywords
- foamed aluminum
- aluminum material
- shot blasting
- steel shots
- cutting
- 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- Withdrawn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
Images
Classifications
-
- 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
- B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
- B22D27/20—Measures not previously mentioned for influencing the grain structure or texture; Selection of compositions therefor
-
- 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
The invention relates to the technical field of foamed aluminum processing, in particular to a through-hole foamed aluminum plate and a preparation method thereof, wherein the method comprises the steps of pushing a foamed aluminum material subjected to a heat preservation procedure and a mold into a shot blasting chamber while the foamed aluminum material and the mold are hot, and impacting and cutting the foamed aluminum material in the mold by using steel shots thrown by a shot blasting machine; then cooling the die and the foamed aluminum material in the die, demolding, cutting off the foamed aluminum close to the bottom of the die, recovering steel shots, and cutting the foamed aluminum material according to a preset specification size to obtain the through-hole foamed aluminum plate; the steel shots are thrown out by the shot blasting device, the foamed aluminum plate subjected to the heat preservation reaction is impacted while the steel shots are hot, the steel shots penetrate through the foamed aluminum material to form a penetrating through hole structure, and the foamed aluminum plate with certain thickness, specification and size is obtained after cutting treatment; the method is simple and convenient, and because the hot process is carried out, the energy requirement for injecting the steel shots into the foamed aluminum material is not high, the operability is high, and the continuous production operation can be realized.
Description
Technical Field
The invention relates to the technical field of foamed aluminum processing, in particular to a through-hole foamed aluminum plate and a preparation method thereof.
Background
Foamed aluminum is one of foamed metals, is rapidly developed internationally in the later period of the 80 th century, is a novel porous material which takes aluminum, aluminum alloy or aluminum-based composite material as a raw material and forms a large number of bubbles in the material after foaming treatment, has the characteristics of a continuous metal phase and a dispersed air phase, shows the characteristics of integrating structure and function, and becomes one of the key research and development topics in the scientific research field of various countries in the world.
The foamed aluminum is mainly divided into closed-cell foamed aluminum and open-cell foamed aluminum from the metal structure. Closed cell aluminum foam contains a plurality of individual cells connected by boundaries (cell edges and cell nodes) and contains blowing agent residues and other microscopic heterogeneous inclusions in the cell walls. Can be prepared by a hollow filler method, a liquid foaming method and the like. The through-hole foamed aluminum is a continuous through three-dimensional porous permeable structure, the through-hole structure is also called metal sponge, and the through-hole foamed aluminum can be obtained by methods such as cast metal casting and cast metal casting, but the steps of the cast metal casting are complicated, the cast metal casting is not suitable for industrial continuous production, and the cost is high; the cast metal producing process is one direct cast metal process with easy-to-control pore structure and porosity, short production period, low cost, simple technological process and other advantages. The time for vacuumizing is determined according to the specific conditions of the experiment, generally 2s-10s, after solidification and cooling, a sample is taken out, and filler particles are removed to obtain the porous foam metal. However, the filler particles commonly used at present are mainly salt, magnesium sulfate and the like, which easily cause pollution, and salt, magnesium sulfate and the like remain in the finished foamed aluminum, which corrodes the foamed aluminum product and shortens the service life of the product.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides the preparation method of the through-hole foamed aluminum plate, which has the advantages of environmental protection, no pollution, high operability and continuous production.
In order to achieve the purpose, the invention adopts the following technical scheme:
a preparation method of a through-hole foamed aluminum plate comprises the steps of pushing a foamed aluminum material subjected to a heat preservation procedure and a mold into a shot blasting chamber while the foamed aluminum material and the mold are hot, and impacting and cutting the foamed aluminum material in the mold by using steel shots thrown by a shot blasting device; and then cooling the die and the foamed aluminum material in the die, demolding, cutting off the foamed aluminum close to the bottom of the die, recovering steel shots, and cutting the foamed aluminum material according to a preset specification size to obtain the through-hole foamed aluminum plate.
In a further technical scheme, the time for the shot blasting device to throw the steel shots on the surface of the foamed aluminum material is 3-5 min.
In a further technical scheme, the diameter of the steel shot is 0.6-1.2 mm.
In a further technical scheme, at least two shot blasting devices which are obliquely arranged are arranged in the shot blasting chamber, and included angles between the shot blasting direction of the shot blasting devices and the surface of the foamed aluminum material are respectively 150 degrees and 30-60 degrees.
In a further technical scheme, the power of the impeller head is adjustable within the range of 5kW to 15 kW.
The invention also provides the through-hole foamed aluminum plate prepared by the method.
Compared with the prior art, the invention has the following technical effects:
the preparation method of the through-hole foamed aluminum plate provided by the invention comprises the steps of throwing steel shots by using the impeller head, impacting the foamed aluminum plate subjected to the heat preservation reaction while the foamed aluminum plate is hot, wherein the steel shots have a certain speed under the throwing of the impeller head and penetrate through the foamed aluminum material to form a penetrating through-hole structure, and cutting to obtain the foamed aluminum plate with a certain thickness, specification and size; the through-hole foamed aluminum plate is formed by the scheme provided by the invention, the method is simple and convenient, and because the hot process is carried out, the energy requirement for the steel shot to penetrate into the foamed aluminum material is not high, the operability is high, and the continuous production operation can be realized; compared with the traditional method for preparing the through-hole foamed aluminum plate, the method provided by the invention is environment-friendly and pollution-free.
Drawings
FIG. 1 is a schematic view of an apparatus for preparing an open-cell aluminum foam panel according to an embodiment of the present invention;
the reference numbers in the figures illustrate: 1. a shot blasting machine; 2. a conveying mechanism; 3. a foamed aluminum mold; 4. shot recovery unit.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further clarified by combining the specific drawings.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
As mentioned above, the invention provides a preparation method of a through-hole foamed aluminum plate, which comprises the steps of pushing the foamed aluminum material subjected to the heat preservation procedure and a mold into a shot blasting chamber while the foamed aluminum material is hot, and impacting and cutting the foamed aluminum material in the mold by using steel shots thrown by a shot blasting machine; and then cooling the die and the foamed aluminum material in the die, demolding, cutting off the foamed aluminum close to the bottom of the die, recovering steel shots, and cutting the foamed aluminum material according to a preset specification size to obtain the through-hole foamed aluminum plate.
In the technical scheme provided by the invention, a steel shot is thrown out by using a shot blasting machine, the foamed aluminum plate subjected to heat preservation reaction is impacted while the steel shot is hot, the steel shot has a certain speed under the throwing of the shot blasting machine and penetrates through the foamed aluminum material to form a penetrating through hole structure, and the foamed aluminum plate with a certain thickness, specification and size is obtained after cutting treatment; the through-hole foamed aluminum plate is formed by the scheme provided by the invention, the method is simple and convenient, and because the hot process is carried out, the energy requirement for the steel shot to penetrate into the foamed aluminum material is not high, the operability is high, and the continuous production operation can be realized; compared with the traditional method for preparing the through-hole foamed aluminum plate, the method provided by the invention is environment-friendly and pollution-free.
According to the invention, the shot blasting device can be used for blasting the steel shots on the surface of the foamed aluminum material according to the thickness of the foamed aluminum material, and the thicker the foamed aluminum material is, the longer the steel shots are blasted.
In addition, for a foamed aluminum material with a certain thickness, the shot blasting time also needs to be within a certain range, and particularly, if the shot blasting time is too short, the shot blasting time is not favorable for forming a sufficient through hole structure on the foamed aluminum material, so that a good sound absorption effect cannot be realized; if the shot is projected for too long, too much through-hole structure formed on the foamed aluminum material may damage the overall mechanical properties, such as compressive strength, etc. Preferably, in the invention, the shot blasting device can be used for 3-5min when the shot blasting device is used for blasting steel shots on the surface of the foamed aluminum material.
According to the invention, the diameter of the steel shot used can be selected within wide limits, preferably from 0.6 to 1.2 mm.
In a specific embodiment of the invention, at least two shot blasting devices which are obliquely arranged are arranged in the shot blasting chamber, and the included angles between the shot blasting direction of the shot blasting devices and the surface of the foamed aluminum material are respectively 120-150 degrees and 30-60 degrees.
Specifically, as shown in fig. 1, two shot blasting devices 1 are obliquely arranged above a conveying mechanism 2, the conveying mechanism 2 is used for conveying foamed aluminum molds 3, and a steel shot recovery device 4 is arranged below the conveying mechanism 2.
In the invention, the power of the impeller head is adjustable within the range of 5kW-15 kW.
The following provides a further description of the method for preparing the open-cell foamed aluminum sheet according to the present invention by using specific examples.
Example 1
A preparation method of a through-hole foamed aluminum plate comprises the following steps:
s1: raw material preparation
In this example, the raw materials for preparing the through-hole foamed aluminum plate include an aluminum ingot, calcium particles (tackifier), titanium hydride (foaming agent), and solid steel shot (diameter of 0.8 mm);
s2: increase viscosity
Smelting an aluminum ingot, adding a tackifier at 680 ℃, wherein the dosage of the tackifier is 2.5 percent of the weight of the aluminum ingot, stirring and mixing for 10min, and the stirring speed is 900 r/min;
s3: foaming
Adding a foaming agent at 660 ℃, wherein the dosage of the foaming agent is 2.2 percent of the weight of the aluminum ingot, stirring for 5min, and the stirring speed is 1000 r/min;
s4: heat preservation
Keeping the temperature at 660 ℃ for 3 min;
s5: injection steel shot
Four shot blasting devices with adjustable power are distributed at the upper end of the shot blasting chamber, a steel shot recovery device is arranged at the bottom of the shot blasting chamber, after the heat preservation process is completed, the die is discharged out of the furnace and immediately enters the shot blasting chamber, the four shot blasting devices drive the steel shots to spray the surface of the foamed aluminum through centrifugal force generated by rotation of an impeller, and the spraying time is 4 min;
s6: cooling, shaping, and cutting
After the injection is finished, water cooling is carried out on the die; and cutting according to the specified size after shaping to obtain the through-hole foamed aluminum plate.
Comparative example 1
The comparative example is basically the same as the step of the method for preparing the through-hole foamed aluminum plate in the example 1, except that in the step S4, the step S6 is directly switched to after the heat preservation is carried out for 3min at the temperature of 660 ℃, namely, the step S5 of spraying steel shots is not carried out, and the foamed aluminum plate is obtained by cutting according to the specification and the size.
The performance of the foamed aluminum plate samples prepared in example 1 and comparative example 1 was tested, and the test results are summarized in table 1; wherein, the compression strength test adopts a hydraulic universal material tester; the sound absorption coefficient is measured according to the sound absorption coefficient and sound resistance porosity measurement specification of the standing wave tube method (GBJ 88-85).
Table 1:
| item | Example 1 | Comparative example 1 |
| Sound absorption coefficient (standing wave pipe method test) | 0.56 | 0.42 |
| Compressive strength (N/mm)2) | 4.95 | 5.32 |
The foregoing shows and describes the general principles, essential features, and inventive features of this invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. The preparation method of the through-hole foamed aluminum plate is characterized by comprising the steps of pushing the foamed aluminum material subjected to the heat preservation procedure and a mold into a shot blasting chamber while the foamed aluminum material is hot, and impacting and cutting the foamed aluminum material in the mold by using steel shots thrown by a shot blasting device; and then cooling the die and the foamed aluminum material in the die, demolding, cutting off the foamed aluminum close to the bottom of the die, recovering steel shots, and cutting the foamed aluminum material according to a preset specification size to obtain the through-hole foamed aluminum plate.
2. The method as claimed in claim 1, wherein the shot blasting device is used for blasting the steel shots on the surface of the foamed aluminum material for 3-5 min.
3. A method according to claim 1, characterized in that the steel shot used has a diameter of 0.6-1.2 mm.
4. The method as claimed in claim 1, wherein at least two shot blasting devices are arranged in the shot blasting chamber in an inclined manner, and the included angles between the shot blasting directions of the shot blasting devices and the surface of the foamed aluminum material are respectively 120-150 degrees and 30-60 degrees.
5. The method of claim 1, wherein the power of the impeller head is adjustable between 5kW and 15 kW.
6. An open-cell aluminum foam panel produced by the method of any one of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111153670.3A CN113862501A (en) | 2021-09-29 | 2021-09-29 | Through-hole foamed aluminum plate and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111153670.3A CN113862501A (en) | 2021-09-29 | 2021-09-29 | Through-hole foamed aluminum plate and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113862501A true CN113862501A (en) | 2021-12-31 |
Family
ID=79000704
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111153670.3A Withdrawn CN113862501A (en) | 2021-09-29 | 2021-09-29 | Through-hole foamed aluminum plate and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113862501A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116213724A (en) * | 2023-02-23 | 2023-06-06 | 山东海红建设工程有限公司 | Forming process and equipment for large-aperture through-hole foamed aluminum plate |
-
2021
- 2021-09-29 CN CN202111153670.3A patent/CN113862501A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116213724A (en) * | 2023-02-23 | 2023-06-06 | 山东海红建设工程有限公司 | Forming process and equipment for large-aperture through-hole foamed aluminum plate |
| CN116213724B (en) * | 2023-02-23 | 2023-12-22 | 廊坊市正永泡沫制品有限公司 | Forming process and equipment for foam aluminum plate with through holes |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104589567B (en) | Continuous foamed aluminum sheet material production line utilizing screw pushing and pressurization foaming | |
| CN109465426A (en) | A kind of high-performance through-hole foam aluminum material and its preparation process | |
| CN109465387B (en) | SiCp/EPS lost foam and SiCp/Al casting forming process | |
| CN113862501A (en) | Through-hole foamed aluminum plate and preparation method thereof | |
| CN101722291B (en) | Method and device for simulating horizontal growth process of solidification structure | |
| CN107058781A (en) | The continuous foamed new technology of metal | |
| CN107225243A (en) | A kind of foam metal material preparation method | |
| CN103540785B (en) | A kind of method of magnesium aluminium intermetallic compound reinforced foam aluminium | |
| CN107674233A (en) | The preparation method of makrolon microcellular foam material | |
| CN101948963B (en) | Method for preparing foamed aluminum/aluminum alloy special-shaped piece by vacuum foaming | |
| CN102409194A (en) | Method for preparing foam magnesium alloy specially-shaped piece and composite piece by secondary foaming method | |
| CN112899513B (en) | Foamed aluminum with open-close hole coexisting structure and preparation method thereof | |
| CN108517976A (en) | Heat-insulation broken bridge type foamed aluminium outer wall composite board | |
| CN101956092A (en) | Through hole type microcellular foam aluminum sheet with 0.07 to 0.3mm aperture and preparation method | |
| CN109022880B (en) | A kind of foamed aluminium Quick foaming device | |
| CN108941516B (en) | Preparation method of foamed aluminum | |
| CN110142396B (en) | Casting method of foam aluminum alloy platform | |
| CN104561635A (en) | Foamed aluminum production process combining melt-foaming method and bottom blowing method | |
| CN106381413A (en) | Method for preparing 5-series foam aluminum alloy material through pore forming agent method | |
| Uzun et al. | Investigation of mechanical properties of tubular aluminum foams | |
| CN103343254B (en) | Preparation method of pore structure controllable porous magnesium-calcium alloy | |
| CN104611603A (en) | Improved technology for production of foamed aluminum based on melt foaming method | |
| CN104152733A (en) | Method for manufacturing high-performance cerium praseodymium aluminum alloy | |
| CN1252299C (en) | Process for cold pressing-solving-vacuum sintering preparation of foamed aluminum | |
| JA et al. | Compressive properties of aluminum foams produced by replication route using spheroidal calcium chloride as space holder |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20211231 |
|
| WW01 | Invention patent application withdrawn after publication |