CN100582276C - Technique for secondary aluminum silicon alloys crassitude grain refinement - Google Patents
Technique for secondary aluminum silicon alloys crassitude grain refinement Download PDFInfo
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- CN100582276C CN100582276C CN200810031021A CN200810031021A CN100582276C CN 100582276 C CN100582276 C CN 100582276C CN 200810031021 A CN200810031021 A CN 200810031021A CN 200810031021 A CN200810031021 A CN 200810031021A CN 100582276 C CN100582276 C CN 100582276C
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Abstract
The invention relates to a technique for refining coarse crystal grain of recycled al alloy, which is achieved like that the technique comprises the following steps: firstly, melting regeneration aluminum-silicon alloy, secondly, preparing a stirrer and a copple, thirdly, stirring semi solid of regeneration aluminum-silicon alloy, fourthly, squeezing slurry of the semi-solid regeneration aluminum-silicon alloy. The technique has the advantages that the technique adopts a built-up gear stirrer to stir, which can completely and evenly stir semi-solid aluminum-silicon alloy liquid with high speed, leads coarse fir-tree crystal to be broken and be refined to be normal tissue, and the squeezing of semi-solid slurry of regeneration aluminum-silicon alloy leads regeneration aluminum-silicon alloy crystal grain to be further refined under high pressure.
Description
Technical field
The present invention relates to a kind of technology of secondary aluminum silicon alloys crassitude grain refinement.
Background technology
Along with aluminum silicon alloy in every field application more and more widely, the aluminum silicon alloy waste product is also more and more, with these aluminum silicon alloys regeneration, turns waste into wealth, both save energy helped environmental protection again.Yet, since high-silicon aluminium-silicon alloy crystal grain usually to occur thick, physical strength is lower, can't normal use.People once solved problem with Quench, extruding, common method such as rotten, but when the material remelting, the genetic phenomenon of coarse grain also usually can occur, so people need be with secondary aluminum silicon alloys crassitude grain refinement.
The technology that the purpose of this invention is to provide a kind of secondary aluminum silicon alloys crassitude grain refinement, it can make the coarse grain refinement in the aluminum silicon alloy ingot bar.
Summary of the invention
The object of the present invention is to provide a kind of technology that is used for secondary aluminum silicon alloys crassitude grain refinement.
The present invention is achieved like this, and its processing step is:
(1) fusing of secondary aluminum silicon alloy: remove secondary aluminum silicon alloy surface clean, put into electric furnace, controlled temperature is in 800 ℃, after treating the aluminum silicon alloy fusing, cool the temperature to again about 730 ℃, with the deslagging agent slagging-off, rotten with the sodium salt degeneration agent again, it is standby to cool the temperature to 630 ℃ of left and right sides then.
(2) composite gear formula agitator, crucible are prepared: agitating vane coats coating, crucible is preheated to about 590 ℃, electric furnace and crucible relative position are fixed, agitator is fixed on the electric furnace top by pilot pin, agitator should be concentric with crucible, agitating vane must not collide crucible in whipping process, and crucible must not be run into electric stove wire;
(3) stirring of secondary aluminum silicon alloy: 630 ℃ of secondary aluminum silicon alloy liquid are quantitatively poured in the crucible, put down agitator, treat that the alloy liquid temp reduces to about 610 ℃, begin to stir, stirring velocity is controlled at about 2000 rev/mins; Churning time is controlled at 20-40 minute (fixed with the alloy amount).In whipping process, crucible temperature is controlled at 590 ℃ ± 5 ℃; Stir clockwise and should change the counterclockwise stirring of mixing direction 1 minute after 3-5 minute;
(4) extruding of secondary aluminum silicon alloy: about 590 ℃ secondary aluminum silicon alloy semi solid slurry is quantitatively poured in the ingot mould, extruding immediately, its specific pressure should be no less than 200Mpa..Take out from ingot mould behind the alloy graining, its secondary aluminum silicon alloy ingot bar is the composite refining finished product, and the coarse grain in the ingot bar is refined into healthy tissues entirely.
Advantage of the present invention is: adopt the composite gear agitator to stir, can be fully with semisolid Al-Si alloy liquid at a high speed, stir equably, make thick dentrite broken and be refined into healthy tissues; The extruding of secondary aluminum silicon gold semi solid slurry makes the further refinement under high pressure of secondary aluminum silicon alloy crystal grain.
Embodiment
Secondary aluminum silicon alloy surface is removed clean, put into electric furnace, controlled temperature is at 800 ℃, treat the aluminum silicon alloy fusing after, cool the temperature to 730 ℃ again, rotten with the sodium salt degeneration agent again with the deslagging agent slagging-off, cool the temperature to then 630 ℃ standby; Agitating vane coats coating, and crucible is preheated to 590 ℃, and electric furnace and crucible relative position are fixed, and agitator is fixed on electric furnace top by pilot pin, and agitator should be concentric with crucible, agitating vane must not collide crucible in whipping process, and crucible must not be run into electric stove wire; 630 ℃ of secondary aluminum silicon alloy liquid are quantitatively poured in the crucible, put down agitator, treat that the alloy liquid temp reduces to 610 ℃, begin to stir, stirring velocity is controlled at about 2000 rev/mins; Churning time is controlled at 20-40 minute (fixed with the alloy amount).In whipping process, crucible temperature is controlled at 590 ℃ ± 5 ℃; Stir clockwise and should change the counterclockwise stirring of mixing direction 1 minute after 3-5 minute;
Quantitatively pour into about 590 ℃ secondary aluminum silicon alloy semi solid slurry in the ingot mould, extruding immediately, its specific pressure should be no less than 200Mpa, takes out from ingot mould behind the alloy graining, its secondary aluminum silicon alloy ingot bar is the composite refining finished product, and the coarse grain in the ingot bar is refined into healthy tissues entirely.
Claims (1)
1, a kind of technology of secondary aluminum silicon alloys crassitude grain refinement is characterized in that processing step is:
(1) fusing of secondary aluminum silicon alloy: secondary aluminum silicon alloy surface is removed totally, put into electric furnace, controlled temperature is in 800 ℃, after treating the aluminum silicon alloy fusing, cool the temperature to 730 ℃ again, remove the gred with deslagging agent, rotten with the sodium salt degeneration agent again, cool the temperature to then 630 ℃ standby;
(2) composite gear formula agitator, crucible are prepared: agitating vane coats coating, crucible is preheated to 590 ℃, and with crucible, agitator relative fixed, installation, agitator should be concentric with crucible, agitating vane must not collide crucible in whipping process, and crucible must not be run into electric stove wire;
(3) stirring of secondary aluminum silicon alloy: 630 ℃ of secondary aluminum silicon alloy liquid are quantitatively poured in the crucible, put down agitator, treat that the alloy liquid temp reduces to 610 ℃, begin to stir, stirring velocity is controlled at 2000 rev/mins; Churning time was controlled at 20-40 minute, and in whipping process, crucible temperature is controlled at 590 ℃ ± 5 ℃; Stir clockwise and should change the counterclockwise stirring of mixing direction 1 minute after 3-5 minute;
(4) extruding of secondary aluminum silicon alloy: quantitatively pour into 590 ℃ secondary aluminum silicon alloy semi solid slurry in the ingot mould, extruding immediately, its extruding specific pressure should be no less than 200MPa, from ingot mould, take out behind the alloy graining, its secondary aluminum silicon alloy ingot bar is the composite refining finished product, and the coarse grain in the ingot bar is refined into healthy tissues entirely.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810031021A CN100582276C (en) | 2008-04-08 | 2008-04-08 | Technique for secondary aluminum silicon alloys crassitude grain refinement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810031021A CN100582276C (en) | 2008-04-08 | 2008-04-08 | Technique for secondary aluminum silicon alloys crassitude grain refinement |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101250653A CN101250653A (en) | 2008-08-27 |
| CN100582276C true CN100582276C (en) | 2010-01-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200810031021A Expired - Fee Related CN100582276C (en) | 2008-04-08 | 2008-04-08 | Technique for secondary aluminum silicon alloys crassitude grain refinement |
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| CN (1) | CN100582276C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103290245B (en) * | 2013-07-02 | 2015-07-01 | 袁晓东 | Process for producing recycled aluminum-silicon alloy material |
| CN103381471B (en) * | 2013-07-30 | 2015-10-14 | 上海交通大学 | The preparation method of nearly cocrystallized Al-Si alloy semi solid slurry or blank |
| CN110835697B (en) * | 2019-11-29 | 2023-08-01 | 中北大学 | Method for directly preparing aluminum alloy refiner by recycling waste aluminum |
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2008
- 2008-04-08 CN CN200810031021A patent/CN100582276C/en not_active Expired - Fee Related
Non-Patent Citations (4)
| Title |
|---|
| 稀土La细化再生铝硅合金中β－Fe相的机理研究. 章光全等.特种铸造及有色合金，第6期. 2003 |
| 稀土La细化再生铝硅合金中β－Fe相的机理研究. 章光全等.特种铸造及有色合金，第6期. 2003 * |
| 过共晶铝硅合金半固态挤压铸造近终成形技术研究. 刘昌明等.金属成形工艺，第18卷第1期. 2000 |
| 过共晶铝硅合金半固态挤压铸造近终成形技术研究. 刘昌明等.金属成形工艺，第18卷第1期. 2000 * |
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| CN101250653A (en) | 2008-08-27 |
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