CN101818279A - Device and method for preparing porous foam metal by liquid metal foaming - Google Patents
Device and method for preparing porous foam metal by liquid metal foaming Download PDFInfo
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- CN101818279A CN101818279A CN 201010173386 CN201010173386A CN101818279A CN 101818279 A CN101818279 A CN 101818279A CN 201010173386 CN201010173386 CN 201010173386 CN 201010173386 A CN201010173386 A CN 201010173386A CN 101818279 A CN101818279 A CN 101818279A
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Abstract
The invention discloses a device and a method for preparing porous foam metal by liquid metal foaming. The device comprises a liquid metal groove, a foaming chamber, a fluid hole, an isolation wall, a high pressure air chamber and a metal crystallizer. The middle of the metal crystallizer is provided with a high-frequency ultrasonic oscillator; and the high-frequency ultrasonic oscillator is connected with a high-frequency ultrasonic power source used for adjusting the oscillation frequency, amplitude and power of the high-frequency ultrasonic oscillator. The high-frequency ultrasonic oscillator is started, when the bubble-containing liquid metal passes through the metal crystallizer, bubbles are subjected to ultrasonic oscillation for fragmentation under the action of the high-frequency ultrasonic oscillation, and a bubble is fragmented into several smaller bubbles; and the oscillation frequency and the amplitude of the high-frequency ultrasonic oscillator are adjusted, so that the fragmentation degree and the size of the bubbles meet the requirements. The bubbles formed by high-frequency ultrasonic oscillation have uniform size and distribution; and the device and the method have the advantages of simple process and low cost, and are suitable for large-scale production, promotion and application.
Description
Technical field
The invention belongs to the metallic substance technology of preparing of mechanical engineering field, particularly a kind of Apparatus for () and method therefor with preparing porous foam metal by liquid metal foaming.
Background technology
Porous metal material with foamy structure is because its special structure formation, not only have weldability, can conduct electricity, general metal properties such as extending, and more demonstrate self characteristic at aspects such as energy-absorbing damping, high damping, noise elimination noise reduction, heat insulation heat exchange, electromagnetic shielding, air-and water-permeables, be widely used in fields such as industry, health care, building trade, environmental protection cause and high and new technology.State according to metal in the preparation process divides, and the preparation method of porous foam metal mainly contains liquid phase method, solid phase method and metal deposition.The foaming of the liquid metal method such as method that can reduce foaming by direct gas-blowing foaming method, metal hydride realizes; The foaming of solid metal can be passed through methods such as powder metallurgic method, powder foam method, metal hollow ball method and metal-powder fiber sintering method and realize; Metal deposition is to adopt the method for chemistry or physics to realize.But all there are some problems in these methods:
1, metal hydride reduces foaming method because the metal hydride decomposition course is restive, and there is the cost problem of higher in the bubble of its formation equally with direct air blast foaming; Because the existence of H forms hydrogen embrittlement easily, worsen the mechanical property of metal again, only be suitable for the foaming of Al, Mg metal, then inapplicable to Ti metal and alloy thereof.
2, the foaming of Al metal can only use direct gas-blowing foaming legal system to be equipped with foamed metal, but in preparation process, because gathering, the merging of bubble, the pore size in the Al foamed metal is restive, pore size is not of uniform size, thereby the performance of material is produced adverse influence.
3, to the molten metal foaming, under condition of negative pressure, the gas that is dissolved in the liquid forms bubble, for the generation of bubble, grow up, the coalescence process is restive, the space size differs in the metal foaming material of formation.
Summary of the invention
Be to solve the problems referred to above that prior art exists, the objective of the invention is to propose a kind of preparation technology simple, with low cost, go for the Apparatus for () and method therefor that multiple metal foaming and pore size can be controlled with preparing porous foam metal by liquid metal foaming.
To achieve these goals, technical scheme of the present invention is as follows: a kind of equipment with preparing porous foam metal by liquid metal foaming comprises molten metal bath, foaming chamber, fluid bore, divider wall, plenum chamber, metallic crystal device; Described molten metal bath separates with foaming chamber by the divider wall of band fluid bore, high pressure gas chamber is arranged at the top of described molten metal bath, the side of described foaming chamber links to each other with the metallic crystal device, the middle part of described metallic crystal device is equipped with the high frequency ultrasound vibrator, and described high frequency ultrasound vibrator is connected with the high frequency ultrasound power supply that is used to regulate its vibrational frequency, amplitude and watt level.
Metallic crystal device of the present invention adopts bolt to be connected with the high frequency ultrasound vibrator.
The experiment power of high frequency ultrasound vibrator of the present invention is 400～500W, and vibrational frequency is 21.8kHz, and amplitude is 1.4～2.0 * 10
-5M, magnetzation current is 6～10A during experiment, screen current is 1～2A.
A kind of method with preparing porous foam metal by liquid metal foaming may further comprise the steps:
A, with the METAL HEATING PROCESS in the molten metal bath to about 200-300 more than the fusing point ℃, form molten metal;
High pressure gas in B, the employing high pressure gas chamber carry out gas dissolving to molten metal; Open fluid bore, step-down forms bubble in the molten metal;
C, startup high frequency ultrasound vibrator, when making the molten metal that contains bubble pass through the metallic crystal device, under the high frequency ultrasound oscillating action, bubble is by ultrasonic vibration generation fragmentation, and a bubble fragmentation is several more tiny bubbles; Adjust the vibrational frequency and the amplitude of high frequency ultrasound vibrator, the fragmentation degree and the bubble of bubble are of the required size;
D, make the molten metal that contains tiny pore afterbody solidification and crystallization, form porous foam metal material at the metallic crystal device.
Compared with prior art, the present invention has following beneficial effect:
1, because the present invention adopts the high frequency ultrasound vibration that metal melt is carried out thermal vibration, make molten metal produce a large amount of bubbles, the gas that is dissolved in the liquid can be spread in the bubble.The bubble size that high frequency ultrasound vibration forms, be evenly distributed, this method technology is simple, and cost is low, and suitable scale operation is applied.
2, the present invention does not have strict restriction to the gas that is adopted, and adopts rare gas element Ar, He, N
2, CO
2Or the like, metal structure structure and mechanical property are had no adverse effects, overcome metal hydride and reduced foaming in the method H element to the detrimentally affect of metal structure structures such as Ti metal and alloy, iron and steel and mechanical property, applicable to the foaming of multiple metal.
3, the present invention is by adjusting frequency, the amplitude of high frequency ultrasound vibration, can adjust the reactive force of ultrasonic wave to bubble, the fragmentation degree and the bubble size of control bubble can change the aperture size size of part within a large range, are fit to large-scale industrial application.
Description of drawings
The present invention is 1 of drawings attached only, wherein:
Fig. 1 structural representation of the equipment of preparing porous foam metal by liquid metal foaming.
Among the figure, 1, molten metal bath, 2, foaming chamber, 3, fluid bore, 4, divider wall, 5, high pressure gas chamber, 6, the metallic crystal device, 7, the high frequency ultrasound vibrator, 8, foam metal material, 9, the high frequency ultrasound power supply, 10, bubble, 11, molten metal.
Embodiment
Below in conjunction with accompanying drawing the present invention is described further, as shown in Figure 1, a kind of equipment with preparing porous foam metal by liquid metal foaming comprises molten metal bath 1, foaming chamber 2, fluid bore 3, divider wall 4, plenum chamber 5, metallic crystal device 6; Described molten metal bath 1 separates with foaming chamber 2 by the divider wall 4 of band fluid bore 3, high pressure gas chamber 5 is arranged at the top of described molten metal bath 1, the side of described foaming chamber 2 links to each other with metallic crystal device 6, the middle part of described metallic crystal device 6 is equipped with high frequency ultrasound vibrator 7, and described high frequency ultrasound vibrator 7 is connected with the high frequency ultrasound power supply 9 that is used to regulate its vibrational frequency, amplitude and watt level.Described metallic crystal device 6 adopts bolt to be connected with high frequency ultrasound vibrator 7.The experiment power of described high frequency ultrasound vibrator 7 is 400～500W, and vibrational frequency is 21.8kHz, and amplitude is 1.4～2.0 * 10
-5M, magnetzation current is 6～10A during experiment, screen current is 1～2A.
A kind of method with preparing porous foam metal by liquid metal foaming may further comprise the steps:
A, with the METAL HEATING PROCESS in the molten metal bath 1 to about 200-300 more than the fusing point ℃, form molten metal 11;
High pressure gas in B, the employing high pressure gas chamber 5 carry out gas dissolving to molten metal 11; Open fluid bore 3, step-down forms bubble 10 in the molten metal 11;
C, startup high frequency ultrasound vibrator 7, when making the molten metal 11 that contains bubble 10 pass through metallic crystal device 6, under the high frequency ultrasound oscillating action, bubble 10 is by ultrasonic vibration generation fragmentation, and bubble 10 fragmentations are several more tiny bubbles 10; Adjust the vibrational frequency and the amplitude of high frequency ultrasound vibrator 7, the fragmentation degree and the bubble of bubble 10 are of the required size;
D, make the molten metal 11 that contains tiny pore afterbody solidification and crystallization, form porous foam metal material 8 at metallic crystal device 6.
It below is a specific embodiment of the present invention.With the Al metal foaming material is example, Al molten metal 11 in high pressure gas chamber 5 3～5 * 10
5Under the effect of Pa high pressure gas, keep 0.5-1.0h, gas dissolving is in molten metal 11; Open fluid bore 3, the molten metal 11 in the high pressure gas chamber 5 enters foaming chamber 2; Because the reduction of air pressure, the solubleness of gas in melt reduces, the gas that is dissolved in the metal melt is separated out formation bubble 10 from metal melt in foaming chamber 2, because the gathering of bubble 10 and growing up, its size is restive on technology, but the molten metal 11 of carrying bubble 10 secretly is during by metallic crystal device 6, under the effect of high frequency ultrasound vibrator 7, bubble 10 in the molten metal 11 is formed a large amount of small bubbles by fragmentation; At the afterbody crystallisation by cooling of metallic crystal device 6, a large amount of small bubbles remain, and form foam metal material 8.
Claims (4)
1. the equipment with preparing porous foam metal by liquid metal foaming comprises molten metal bath (1), foaming chamber (2), fluid bore (3), divider wall (4), plenum chamber (5), metallic crystal device (6); Described molten metal bath (1) separates with foaming chamber (2) by the divider wall (4) of band fluid bore (3), high pressure gas chamber (5) is arranged at the top of described molten metal bath (1), the side of described foaming chamber (2) links to each other with metallic crystal device (6), it is characterized in that: the middle part of described metallic crystal device (6) is equipped with high frequency ultrasound vibrator (7), and described high frequency ultrasound vibrator (7) is connected with the high frequency ultrasound power supply (9) that is used to regulate its vibrational frequency, amplitude and watt level.
2. a kind of equipment with preparing porous foam metal by liquid metal foaming according to claim 1 is characterized in that: described metallic crystal device (6) adopts bolt to be connected with high frequency ultrasound vibrator (7).
3. a kind of equipment according to claim 1 with preparing porous foam metal by liquid metal foaming, it is characterized in that: the experiment power of described high frequency ultrasound vibrator (7) is 400～500W, and vibrational frequency is 21.8kHz, and amplitude is 1.4～2.0 * 10
-5M, magnetzation current is 6～10A during experiment, screen current is 1～2A.
4. method with preparing porous foam metal by liquid metal foaming is characterized in that: may further comprise the steps:
A, with the METAL HEATING PROCESS in the molten metal bath (1) above about 200-300 ℃, formation molten metal (11) to fusing point;
High pressure gas in B, the employing high pressure gas chamber (5) carry out gas dissolving to molten metal (11); Open fluid bore (3), step-down forms bubble (10) in the molten metal (11);
C, startup high frequency ultrasound vibrator (7), when making the molten metal (11) that contains bubble (10) pass through metallic crystal device (6), under the high frequency ultrasound oscillating action, bubble (10) is by ultrasonic vibration generation fragmentation, and a bubble (10) fragmentation is several more tiny bubbles (10); Adjust the vibrational frequency and the amplitude of high frequency ultrasound vibrator (7), the fragmentation degree and the bubble of bubble (10) are of the required size;
D, make the molten metal (11) that contains tiny pore afterbody solidification and crystallization, form porous foam metal material (8) at metallic crystal device (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101733868A CN101818279B (en) | 2010-05-14 | 2010-05-14 | Device and method for preparing porous foam metal by liquid metal foaming |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010101733868A CN101818279B (en) | 2010-05-14 | 2010-05-14 | Device and method for preparing porous foam metal by liquid metal foaming |
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| CN101818279A true CN101818279A (en) | 2010-09-01 |
| CN101818279B CN101818279B (en) | 2011-05-11 |
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| CN2010101733868A Expired - Fee Related CN101818279B (en) | 2010-05-14 | 2010-05-14 | Device and method for preparing porous foam metal by liquid metal foaming |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102443715A (en) * | 2011-05-06 | 2012-05-09 | 昆明理工大学 | Preparation process of foamed copper section |
| CN105463229A (en) * | 2016-01-27 | 2016-04-06 | 东北大学 | Preparation device of foamed aluminum capable of effectively inhibiting drainage phenomenon |
| CN107876714A (en) * | 2017-10-25 | 2018-04-06 | 刘宗蒲 | A kind of preparation method of high efficiency and heat radiation metal material |
| CN109261917A (en) * | 2018-11-28 | 2019-01-25 | 苏州创浩新材料科技有限公司 | A kind of ultrasonic continuous casting installation for casting preparing minor diameter Kufil |
| CN114505453A (en) * | 2022-02-09 | 2022-05-17 | 安徽省新方尊自动化科技有限公司 | Device and method for continuously producing foamed aluminum bar |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1300864A (en) * | 2000-11-23 | 2001-06-27 | 李道韫 | Process for preparing foam metal |
| CN1639364A (en) * | 2002-02-01 | 2005-07-13 | 赛麦特公司 | Metal foam casting apparatus and method |
-
2010
- 2010-05-14 CN CN2010101733868A patent/CN101818279B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1300864A (en) * | 2000-11-23 | 2001-06-27 | 李道韫 | Process for preparing foam metal |
| CN1639364A (en) * | 2002-02-01 | 2005-07-13 | 赛麦特公司 | Metal foam casting apparatus and method |
Non-Patent Citations (2)
| Title |
|---|
| 《湖南理工学院学报（自然科学版）》 20070930 蒋晓虎等 泡沫铝：新型超轻多孔金属的制备方法与性能 65-69 1-4 第20卷, 第3期 * |
| 《热加工工艺》 20041231 王录才等 熔体发泡法制备泡沫金属的发展与展望 59-62 1-4 , 第12期 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102443715A (en) * | 2011-05-06 | 2012-05-09 | 昆明理工大学 | Preparation process of foamed copper section |
| CN105463229A (en) * | 2016-01-27 | 2016-04-06 | 东北大学 | Preparation device of foamed aluminum capable of effectively inhibiting drainage phenomenon |
| CN107876714A (en) * | 2017-10-25 | 2018-04-06 | 刘宗蒲 | A kind of preparation method of high efficiency and heat radiation metal material |
| CN107876714B (en) * | 2017-10-25 | 2019-04-30 | 刘宗蒲 | A kind of preparation method of high efficiency and heat radiation metal material |
| CN109261917A (en) * | 2018-11-28 | 2019-01-25 | 苏州创浩新材料科技有限公司 | A kind of ultrasonic continuous casting installation for casting preparing minor diameter Kufil |
| CN114505453A (en) * | 2022-02-09 | 2022-05-17 | 安徽省新方尊自动化科技有限公司 | Device and method for continuously producing foamed aluminum bar |
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| Publication number | Publication date |
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| CN101818279B (en) | 2011-05-11 |
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Granted publication date: 20110511 Termination date: 20120514 |