CN1274856C - Process for preparing foam magnesium - Google Patents
Process for preparing foam magnesium Download PDFInfo
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- CN1274856C CN1274856C CN 200310111400 CN200310111400A CN1274856C CN 1274856 C CN1274856 C CN 1274856C CN 200310111400 CN200310111400 CN 200310111400 CN 200310111400 A CN200310111400 A CN 200310111400A CN 1274856 C CN1274856 C CN 1274856C
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Abstract
The present invention relates to technology for preparing foamy magnesium. The present invention comprises: smelting magnesium alloy, fabricating a vacuum seepage apparatus, selecting filler particles, preheating prefabricated models, casting seepage, processing and shaping the models, and removing the filler particles. The size of the filler particles is 16 to 120 meshes. The preheating temperature of casting models and prefabricating models is 200 DEGC to 550 DEGC. The casting temperature is 700 DEGC to 730 DEGC. The present invention solves the problems of air exhaust and sound insulation of automobile engines and motorcycle engines by the excellent sound absorption property of foamy metal materials, and the problems trouble environment for long time. The foamy metal materials can be used as the sandwich materials of airplane structural parts, the soundproof wall boards of highways, etc.
Description
Technical field
The present invention relates to metal material processing, particularly foam magnesium preparation technology.
Background technology
In recent years, in order to satisfy industrial production and scientific technological advance needs, people are the foam metal material of development with property actively, but main direction is the foam aluminium alloy material, appears in the newspapers few to the institute of foam aluminum alloy material.This is because inflammable, perishable, the complex process of magnesium alloy etc.
At present, the method for preparing foamed metal commonly used has following several:
1, powder metallurgic method: it is that whipping agent is joined in the metal-powder, through forming and sintering, whipping agent is decomposed, and evaporates or dissolves and make, and adopts this method to be difficult to obtain porosity and is higher than 60% foam materials.
2, cover the metal method, claim strike again, it is to be skeleton with the polyurethane foam material, carries out electrolytic deposition, adds the organic foam material of heat abstraction then and makes.This foam material costliness, technology are complicated, use limitedly.
3, casting comprises:
Direct foaming: promptly directly add whipping agents such as TiH2, ZrH2, NaCl and CaH2 in molten metal, make it and molten metal uniform mixing, decomposes goes out gas, cooling back formation foamed metal material.The more difficult control punch gap structure of the technological process of this method is inhomogeneous.
Microcast process: adopting polyurethane foam plastic is the apperance skeleton, insert the refractory materials of fluidised form, treat its sclerosis after heating makes the plastics vaporization and obtains the spongy structure apperance, then it is imbedded casting mold, pour into liquid metal and make it to infiltrate in the apperance, just can obtain the foam metal material of high porosity after treatment.
Summary of the invention
Purpose of the present invention is to provide a kind of technology simple, respond well foam magnesium preparation technology.
The present invention adopts magnesium as body material.Obtain high-quality foam magnesium material by pressurization (vacuum) seepage flow casting.This method is to utilize vacuum unit to form pressure difference in the liquid metal upper and lower surface, liquid metal is infiltrated in the hole of removable filler particles, solidifies to form required geomery, removes filler again and just can obtain foam metal material.
Vacuum seepage technical process of the present invention such as Fig. 2.
At first carrying out test prepares: select and prepare magnesium alloy, melting solvent, fire retardant etc.; Design and produce vacuum seepage device, casting mold, pick-off unit, melting with instrument, air exhausting device etc., choose filler particles, the screening appropriate size and carries out pre-treatment.
Finishing deals with problems arising from an accident carries out the formula seepage tests: make earlier and the preheating prefabrication type; Pour into a mould seepage flow then, to be cooled solidifying cleared up casting mold after cooling at the bottom of the lower temperature, obtains the complex body sample of magnesium alloy one filling particle.
Carry out aftertreatment: the complex body sample of magnesium alloy and filler particles is carried out mechanical workout, obtain required beginning size: filler particles is removed in dissolving as early as possible then, promptly obtains the foam aluminum alloy material.
The present invention makes foam magnesium processing parameter: casting mold and prefabrication type preheating temperature are 200 ℃-550 ℃, and teeming temperature is about 700 ℃-730 ℃, initial negative pressure-0.04--0.1MPa, and filler particles is of a size of the 16-120 order.
The density of foam magnesium of the present invention is at 0.15-0.4g/cm
3Between, its hole three-dimensional communication, pore diameter are between 0.5-5mm, and metallic matrix is a three-dimensional communication.Magnesium crystal structure and magnesium atom configuration of extra-nuclear electron characteristics have determined magnesium to have good damping and amortization, anti-electro permanent magnetic.Have present other materials lightweight, noise elimination, the shake that stagnates, the electromagnetic shielding that can not have simultaneously and function such as anti-aging.Owing to have above-mentioned good performance, the foam magnesium material can be used to make sourdine, vibroshock, interchanger, solar collector, support of the catalyst, electro-magnetic shielding cover and make metallic material components in light weight, that intensity is high etc. may for solving that many great technical barriers provide.For example, utilize foamed metal material good sound absorption characteristic can solve the automobile of long-term puzzlement environment, the exhaust noise silencing problem of motorcycle engine, can be used as the sandwich material of aircraft structure, the sound insulation wallboard of motorway etc.
Description of drawings
Fig. 1 is principle of the invention figure;
Fig. 2 is a process flow sheet of the present invention;
Specific embodiment
The present invention is a kind of foam magnesium preparation technology, vacuum seepage technical process of the present invention such as Fig. 2, and the vacuum seepage principle comprises that magnesium alloy smelting becomes magnesium liquid 1 as shown in Figure 1, make the vacuum seepage device, choose filler particles 2, the preheating prefabrication type, cast seepage flow, filler particles is removed in machine-shaping.Selected filler particles size is between the 16-32 order.Casting mold and prefabrication type preheating temperature are 530 ℃, and teeming temperature is 700 ℃.
Claims (1)
1, a kind of foam magnesium preparation technology comprises magnesium alloy smelting, makes the vacuum seepage device, chooses filler particles, the preheating prefabrication type, and cast seepage flow, filler particles is removed in machine-shaping, it is characterized in that:
(1) filler particles is chosen, and the filler particles size is at the 16-120 order;
(2) casting mold and prefabrication type preheating temperature are 200 ℃-550 ℃, and teeming temperature is 700 ℃-730 ℃;
(3) initial negative pressure-0.04--0.1Mpa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310111400 CN1274856C (en) | 2003-11-14 | 2003-11-14 | Process for preparing foam magnesium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310111400 CN1274856C (en) | 2003-11-14 | 2003-11-14 | Process for preparing foam magnesium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1544671A CN1544671A (en) | 2004-11-10 |
| CN1274856C true CN1274856C (en) | 2006-09-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200310111400 Expired - Fee Related CN1274856C (en) | 2003-11-14 | 2003-11-14 | Process for preparing foam magnesium |
Country Status (1)
| Country | Link |
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| CN (1) | CN1274856C (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100439525C (en) * | 2005-11-16 | 2008-12-03 | 中国科学院金属研究所 | Process for preparing foam magnesium by direct foaming of melt mass |
| CN100341645C (en) * | 2005-12-26 | 2007-10-10 | 中国科学院长春应用化学研究所 | Process for preparing foam composite material of magnesium alloy-pearlite |
| CN100453665C (en) * | 2006-03-17 | 2009-01-21 | 中国科学院合肥物质科学研究院 | Magnesium foam material with controllable porosity and pore diameter and preparation method thereof |
| CN100443608C (en) * | 2006-10-20 | 2008-12-17 | 西安理工大学 | Method for preparing rare earth foam zinc-aluminium alloy composite material |
| CN101220424B (en) * | 2008-01-25 | 2010-10-06 | 太原科技大学 | Method for manufacturing foam aluminum alloy |
| CN102409194B (en) * | 2010-09-21 | 2013-03-27 | 中国科学院金属研究所 | Method for preparing foam magnesium alloy specially-shaped piece and composite piece by secondary foaming method |
| CN102618744B (en) * | 2012-02-29 | 2013-11-20 | 中国科学院合肥物质科学研究院 | Preparation method for clean foam magnesium in bionic field |
| CN103862051B (en) * | 2014-04-11 | 2016-03-02 | 重庆大学 | A kind of foam magnesium preparation method for buffering energy-absorbing material |
| CN104588617B (en) * | 2015-01-23 | 2018-08-24 | 同济大学 | The method that one step prepares Metal Substrate light composite material |
| CN105382245B (en) * | 2015-11-19 | 2019-02-12 | 山西振华创新科技有限公司 | For making the filler material of porous metals and the fill method of the filler material |
| CN106222468B (en) * | 2016-08-24 | 2018-04-03 | 北京新能源汽车股份有限公司 | Honeycomb metal, preparation method thereof and automobile containing same |
| CN107695318B (en) * | 2017-09-29 | 2019-04-30 | 重庆理工大学 | A kind of foam magnesium sandwich plate and its Semi-Solid Thixoforming Seepage Foundry method |
| CN107604190B (en) * | 2017-09-29 | 2019-05-31 | 重庆理工大学 | A kind of Semi-Solid Thixoforming Seepage Foundry method of foam aluminum alloy |
| CN107858541A (en) * | 2017-11-06 | 2018-03-30 | 安徽福瑞尔铝业科技有限公司 | A kind of manufacture method of the foam aluminium plate with high sound-absorption coefficient |
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2003
- 2003-11-14 CN CN 200310111400 patent/CN1274856C/en not_active Expired - Fee Related
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| CN1544671A (en) | 2004-11-10 |
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