CN100393904C - Electromagnetic-mechanical composite preparation method for aluminium 28 lead semisolid slurry - Google Patents
Electromagnetic-mechanical composite preparation method for aluminium 28 lead semisolid slurry Download PDFInfo
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- CN100393904C CN100393904C CNB2006101650426A CN200610165042A CN100393904C CN 100393904 C CN100393904 C CN 100393904C CN B2006101650426 A CNB2006101650426 A CN B2006101650426A CN 200610165042 A CN200610165042 A CN 200610165042A CN 100393904 C CN100393904 C CN 100393904C
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- aluminium
- lead
- electromagnetic
- semisolid slurry
- plumbous
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Abstract
The invention discloses an electromagnetic mechanic composite making method of aluminium-28 lead semi-solid slurry, which is characterized by the following: stirring aluminium-28 melt at 585-582 deg.c; making solid-phase rate at 45-46% without gas in the aluminium-28 lead semi-solid slurry.
Description
Technical field
The present invention relates to a kind of preparation method of aluminium 28 lead semisolid slurry.
Background technology
At present, the method that can prepare the semi solid slurry that contains the material that the rerum natura difference is big between heavy metal composition, the component that do not dissolve each other mainly is a publication number: the CN1740369A denomination of invention: " a kind of preparation process of semi-solid Al 2 O-Sn slurry " disclosed electromagnetic-mechanical composite preparation method.Aluminium 28 is plumbous similar with aluminium 20 tin, be to contain the big self-lubricating material of rerum natura difference between heavy metal composition, the component that do not dissolve each other equally, its heavy metal lead that do not dissolve each other is distributed in aluminium base inside, and therefore, its semi solid slurry can adopt the electromagnetic-mechanical composite preparation method preparation equally.The tissue of aluminium 28 plumbous self-lubricating materials is got over even compact, and its performance is good more.For the aluminium 28 lead semisolid slurry that is used to prepare aluminium 28 plumbous self-lubricating materials, its solid rate is big more, and the shrinkage cavity of the aluminium 28 plumbous self-lubricating materials of preparation is few more with defective such as loose, and performance is good more.But, for aluminium 28 lead semisolid slurry, in the compound preparation process of electromagnetic and mechanical, the solid rate of semi solid slurry is big more, be involved in the just difficult more derivation of its gas inside, after solid rate increases to certain limit, be involved in the inside that its gas inside will remain in semi solid slurry, the inner pore that forms of aluminium 28 plumbous self-lubricating materials in preparation, limit the further raising of aluminium 28 plumbous self-lubricating material performances even cause decline, therefore, must prepare and to guarantee that inner not retaining is involved in gas and can makes solid rate reach the aluminium 28 lead semisolid slurry of higher value again, could guarantee the performance of high-quality Al 28 plumbous self-lubricating materials.
Summary of the invention
Technical problem to be solved by this invention is to obtain the inner electromagnetic-mechanical composite preparation method that is involved in aluminium 28 lead semisolid slurry gas, the solid rate maximum that do not retain.
The technical solution adopted for the present invention to solve the technical problems is: utilizing electromagnetic-mechanical composite preparation method, is under 585～582 ℃ of conditions at whipping temp, the preparation aluminium 28 lead semisolid slurry.
The invention has the beneficial effects as follows: utilize the present invention, can prepare solid rate and not retain the aluminium 28 lead semisolid slurry that is involved in gas up to 45～46% inside.
Description of drawings
Fig. 1 is the microtexture of 47% aluminium 28 lead semisolid slurry for solid rate.
Fig. 2 is the microtexture of 55% aluminium 28 lead semisolid slurry for solid rate.
Fig. 3 is the microtexture of 45.8% aluminium 28 lead semisolid slurry for the solid rate of the present invention preparation.
Embodiment
Embodiment one
The concrete steps of electromagnetic-mechanical composite preparation method of the present invention:
Step 1, preparation aluminium 28 lead alloy liquid, temperature is controlled at 700 ℃;
Step 2 is poured above-mentioned aluminium 28 lead alloy liquid in the plumbago crucible into, and the preheating temperature of plumbago crucible is 500 ℃, realizes preheating by the heating tube in its wall, cover loam cake after, connect Ar gas with anti-oxidation;
Step 3, start electromagnetic mixing apparatus and mechanical stirrer and move up and down control device, aluminium 28 plumbous melts are stirred, simultaneously, close and connect water coolant in the power supply of heating tube and the cooling tube in the plumbago crucible wall and cool off, after aluminium 28 plumbous melts are cooled to 585 ℃, close water coolant, open and regulate the power supply of heating tube, make aluminium 28 plumbous melt temperatures be stabilized in 585 ℃, under 585 ℃, stir 20min after, obtain solid rate and be 45% aluminium 28 lead semisolid slurry.
Electromagnetic mixing apparatus, the mechanical stirrer that electromagnetic-mechanical composite preparation method of the present invention adopts and to move up and down control device be the disclosed electromagnetic mixing apparatus of publication number: CN1740369A, mechanical stirrer and move up and down control device.
Embodiment two
With the difference of embodiment one be: under 584 ℃ of temperature, aluminium 28 plumbous melts are carried out the compound stirring of electromagnetic and mechanical, obtain solid rate and be 45.8% aluminium 28 lead semisolid slurry.
Embodiment three
With the difference of embodiment one be: under 582 ℃ of temperature, aluminium 28 plumbous melts are carried out the compound stirring of electromagnetic and mechanical, obtain solid rate and be 46% aluminium 28 lead semisolid slurry.
Accompanying drawing 1 is the microtexture of 47% aluminium 28 lead semisolid slurry for solid rate, and accompanying drawing 2 is the microtexture of 55% aluminium 28 lead semisolid slurry for solid rate, and accompanying drawing 3 is the microtexture of 45.8% aluminium 28 lead semisolid slurry for the solid rate of the present invention's preparation.Arrow indication zonules such as A, B, C, D are pore among the figure, as seen, when the semi solid slurry solid rate less than 46% the time, semi solid slurry inside does not retain and is involved in gas; When the semi solid slurry solid rate greater than 46% the time, semi solid slurry inside just begins to retain and is involved in gas, and solid rate is big more, retain to be involved in gas many more.As seen, the present invention can be used to prepare solid rate height, the inner aluminium 28 lead semisolid slurry that is involved in gas that do not retain.
Claims (2)
1. the electromagnetic-mechanical composite preparation method of an aluminium 28 lead semisolid slurry, concrete steps are:
Step 1, preparation aluminium 28 lead alloy liquid, temperature is controlled at 700 ℃;
Step 2 is poured above-mentioned aluminium 28 lead alloy liquid in the plumbago crucible into, and the preheating temperature of plumbago crucible is 500 ℃, realizes preheating by the heating tube in its wall, cover loam cake after, connect Ar gas with anti-oxidation;
Step 3, start electromagnetic mixing apparatus and mechanical stirrer and move up and down control device, aluminium 28 plumbous melts are stirred, simultaneously, close and connect water coolant in the power supply of heating tube and the cooling tube in the plumbago crucible wall and cool off, after aluminium 28 plumbous melts are cooled to required whipping temp, close water coolant, open and regulate the power supply of heating tube, make aluminium 28 plumbous melt temperatures be stabilized in required whipping temp, after stirring 20min, obtain the aluminium 28 lead semisolid slurry of required solid rate;
It is characterized in that required whipping temp is 585～582 ℃.
2. the electromagnetic-mechanical composite preparation method of a kind of aluminium 28 lead semisolid slurry according to claim 1 is characterized in that, the solid rate of required aluminium 28 lead semisolid slurry is 45～46%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101650426A CN100393904C (en) | 2006-12-12 | 2006-12-12 | Electromagnetic-mechanical composite preparation method for aluminium 28 lead semisolid slurry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101650426A CN100393904C (en) | 2006-12-12 | 2006-12-12 | Electromagnetic-mechanical composite preparation method for aluminium 28 lead semisolid slurry |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1970820A CN1970820A (en) | 2007-05-30 |
| CN100393904C true CN100393904C (en) | 2008-06-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006101650426A Expired - Fee Related CN100393904C (en) | 2006-12-12 | 2006-12-12 | Electromagnetic-mechanical composite preparation method for aluminium 28 lead semisolid slurry |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102181673A (en) * | 2011-04-10 | 2011-09-14 | 北京交通大学 | Method for uniformly dispersing lead liquid drops in lead 28 lead semisolid size |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3902544A (en) * | 1974-07-10 | 1975-09-02 | Massachusetts Inst Technology | Continuous process for forming an alloy containing non-dendritic primary solids |
| US4229210A (en) * | 1977-12-12 | 1980-10-21 | Olin Corporation | Method for the preparation of thixotropic slurries |
| CN1156350C (en) * | 2000-07-03 | 2004-07-07 | 北京科技大学 | Process and equipment for preparing semi-solid-state metal slurry in spherical primary crystal or raw material for conticasting |
| CN1163328C (en) * | 2000-10-13 | 2004-08-25 | 东北大学 | Process for preparing semi-solid metallic grout |
| CN1740369A (en) * | 2005-09-22 | 2006-03-01 | 北京交通大学 | Prepn process of semi-solid Al2O-Sn slurry |
| CN1768979A (en) * | 2005-09-22 | 2006-05-10 | 北京交通大学 | Method for preparing QTi3.5-10 graphite semi-solid state slurry |
-
2006
- 2006-12-12 CN CNB2006101650426A patent/CN100393904C/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3902544A (en) * | 1974-07-10 | 1975-09-02 | Massachusetts Inst Technology | Continuous process for forming an alloy containing non-dendritic primary solids |
| US4229210A (en) * | 1977-12-12 | 1980-10-21 | Olin Corporation | Method for the preparation of thixotropic slurries |
| CN1156350C (en) * | 2000-07-03 | 2004-07-07 | 北京科技大学 | Process and equipment for preparing semi-solid-state metal slurry in spherical primary crystal or raw material for conticasting |
| CN1163328C (en) * | 2000-10-13 | 2004-08-25 | 东北大学 | Process for preparing semi-solid metallic grout |
| CN1740369A (en) * | 2005-09-22 | 2006-03-01 | 北京交通大学 | Prepn process of semi-solid Al2O-Sn slurry |
| CN1768979A (en) * | 2005-09-22 | 2006-05-10 | 北京交通大学 | Method for preparing QTi3.5-10 graphite semi-solid state slurry |
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| CN1970820A (en) | 2007-05-30 |
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Granted publication date: 20080611 Termination date: 20101212 |