CN107236873A - A kind of method of aluminium alloy fine degenerate processing - Google Patents
A kind of method of aluminium alloy fine degenerate processing Download PDFInfo
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- CN107236873A CN107236873A CN201710650847.8A CN201710650847A CN107236873A CN 107236873 A CN107236873 A CN 107236873A CN 201710650847 A CN201710650847 A CN 201710650847A CN 107236873 A CN107236873 A CN 107236873A
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- 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
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/026—Alloys based on aluminium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/003—Alloys based on aluminium containing at least 2.6% of one or more of the elements: tin, lead, antimony, bismuth, cadmium, and titanium
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Abstract
The present invention discloses a kind of method of aluminium alloy fine degenerate processing, including following operating procedure：（1）After lanthanum powder, barium fluoride, fine aluminium are mixed, it is heated to aluminium and is completely melt, after strong stirring, be cooled to room temperature, fining modifier A is made；（2）Titanium valve is placed in vacuum chamber, silane gas is passed through thereto, the temperature in vacuum chamber is heated to 390 420 DEG C, after being incubated 57 hours, terminates reaction, is down to after room temperature, fining modifier B is made；（3）Aluminium alloy is heated to melting state, fining modifier A is first added thereto, after stirring, then fining modifier B is added thereto, after stirring, is poured into a mould, finished product.The method for the aluminium alloy fine degenerate processing that the present invention is provided, simple to operate, obtained aluminium alloy finished product, anti-wear performance is excellent, compared with prior art, and its tensile strength and elongation percentage obtain great lifting.
Description
Technical field
The invention belongs to technical field of aluminium alloy preparation, and in particular to a kind of method of aluminium alloy fine degenerate processing.
Background technology
Aluminium alloy is most widely used class non-ferrous metal structural material in industry, in Aeronautics and Astronautics, automobile, machinery
Widely applied in manufacture, ship and chemical industry.Industrial economy is developed rapidly, to the demand day of Welded structural member
Benefit increases, and the Research on Weldability enabled aluminum alloy to is also goed deep into therewith.Current aluminium alloy is to apply most alloys.With modern science and technology
Development, people are to the performance requirement more and more higher of aluminium alloy, and can obtain the microstructure of fine uniform turns into control product
The good and bad key factor of performance, fine degenerate processing is to improve its quality, improves the important channel of its performance, be also it is the most frequently used and
One of most efficient method.Current A356 aluminium alloys are after fine degenerate is handled, and its tensile strength and elongation percentage are respectively
250Mpa or so and 6.2% or so, far from meeting strength demand of some fields to aluminium alloy, it is therefore desirable to seek a kind of property
Fine degenerate processing method that can be more excellent.
The content of the invention
In order to solve the above problems, the present invention provides a kind of method of aluminium alloy fine degenerate processing.
The present invention is achieved by the following technical solutions.
A kind of method of aluminium alloy fine degenerate processing, including following operating procedure：
（1）By weight, after 20-25 parts of lanthanum powder, 10-14 parts of barium fluorides, 90-100 parts of fine aluminiums being mixed, it is heated to aluminium complete
After fusing, strong stirring, room temperature is cooled to, fining modifier A is made；
（2）Titanium valve is placed in vacuum chamber, silane gas is passed through thereto, the temperature in vacuum chamber is heated to 390-420
DEG C, after being incubated 5-7 hours, terminate reaction, be down to after room temperature, fining modifier B is made；
（3）Aluminium alloy is heated to after melting state 10-20min, fining modifier A is first added thereto, after stirring, is protected
Temperature reaction 15-20min, then fining modifier B is added thereto, after stirring, insulation reaction 20-30min is poured into a mould,
Finished product.
Specifically, the purity of above-mentioned lanthanum powder is 99.5%, and the purity of above-mentioned barium fluoride is 98.0%, and the purity of above-mentioned fine aluminium is
99.8%。
Specifically, above-mentioned steps（2）In the pressure of silane gas that is passed through be 1 × 104Pa。
Specifically, the weight of above-mentioned fining modifier A addition is the 0.9-1.3% of aluminium alloy weight, above-mentioned fine degenerate
The weight of agent B addition is the 1.7-2.4% of aluminium alloy weight.
Technical scheme more than, the beneficial effects of the invention are as follows：
The method for the aluminium alloy fine degenerate processing that the present invention is provided, simple to operate, obtained aluminium alloy finished product, anti-wear performance is excellent
Different, compared with prior art, its tensile strength improves more than 50%, and elongation percentage improves more than 60%, significantly enhances aluminium
The performance of alloy, has widened its application.Wherein, the fining modifier A that the present invention is provided, lanthanum element and barium element are closed to aluminium
The tissue of gold has extremely excellent thinning effect, and the phenomenon of branch fusing occurs in its dendrite that can cause, may be such that aluminium alloy
The size of middle crystal grain refine to less than 6 μm, and arm spacing is reduced to less than 10 μm between branch, and then greatly improves the anti-of aluminium alloy
Tensile strength and elongation percentage；By titanium valve after deposition silicon processing, fine degenerate A and fining modifier on the one hand can be effectively avoided
The phenomenon of aggregation and segregation occurs for B, on the other hand can lift the degree of Ti peritectic reaction, lifts Ti utilization rate, Jin Erti
The effect of refinement is risen.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, following examples are carried out to the present invention
It is further described.It should be appreciated that specific embodiment party example described herein is not used to limit only to explain the present invention
The fixed present invention.
Embodiment 1
A kind of method of aluminium alloy fine degenerate processing, including following operating procedure：
（1）By weight, after 20 parts of lanthanum powder, 10 parts of barium fluorides, 90 parts of fine aluminiums being mixed, it is heated to aluminium and is completely melt, strength
After stirring, room temperature is cooled to, fining modifier A is made；
（2）Titanium valve is placed in vacuum chamber, silane gas is passed through thereto, the temperature in vacuum chamber is heated to 390 DEG C, guarantor
Temperature terminates reaction, is down to after room temperature after 5 hours, and fining modifier B is made；
（3）Aluminium alloy is heated to after melting state 10min, fining modifier A is first added thereto, after stirring, insulation
15min is reacted, then adds fining modifier B thereto, after stirring, insulation reaction 20min is poured into a mould, finished product.
Specifically, the purity of above-mentioned lanthanum powder is 99.5%, and the purity of above-mentioned barium fluoride is 98.0%, and the purity of above-mentioned fine aluminium is
99.8%。
Specifically, above-mentioned steps（2）In the pressure of silane gas that is passed through be 1 × 104Pa。
Specifically, the weight of above-mentioned fining modifier A addition is the 0.9% of aluminium alloy weight, above-mentioned fining modifier B
Addition weight be aluminium alloy weight 1.7%.
Embodiment 2
A kind of method of aluminium alloy fine degenerate processing, including following operating procedure：
（1）By weight, after 23 parts of lanthanum powder, 12 parts of barium fluorides, 95 parts of fine aluminiums being mixed, it is heated to aluminium and is completely melt, strength
After stirring, room temperature is cooled to, fining modifier A is made；
（2）Titanium valve is placed in vacuum chamber, silane gas is passed through thereto, the temperature in vacuum chamber is heated to 410 DEG C, guarantor
Temperature terminates reaction, is down to after room temperature after 6 hours, and fining modifier B is made；
（3）Aluminium alloy is heated to after melting state 15min, fining modifier A is first added thereto, after stirring, insulation
17min is reacted, then adds fining modifier B thereto, after stirring, insulation reaction 25min is poured into a mould, finished product.
Specifically, the purity of above-mentioned lanthanum powder is 99.5%, and the purity of above-mentioned barium fluoride is 98.0%, and the purity of above-mentioned fine aluminium is
99.8%。
Specifically, above-mentioned steps（2）In the pressure of silane gas that is passed through be 1 × 104Pa。
Specifically, the weight of above-mentioned fining modifier A addition is the 1.1% of aluminium alloy weight, above-mentioned fining modifier B
Addition weight be aluminium alloy weight 2.2%.
Embodiment 3
A kind of method of aluminium alloy fine degenerate processing, including following operating procedure：
（1）By weight, after 25 parts of lanthanum powder, 14 parts of barium fluorides, 100 parts of fine aluminiums being mixed, it is heated to aluminium and is completely melt, strength
After stirring, room temperature is cooled to, fining modifier A is made；
（2）Titanium valve is placed in vacuum chamber, silane gas is passed through thereto, the temperature in vacuum chamber is heated to 420 DEG C, guarantor
Temperature terminates reaction, is down to after room temperature after 7 hours, and fining modifier B is made；
（3）Aluminium alloy is heated to after melting state 20min, fining modifier A is first added thereto, after stirring, insulation
20min is reacted, then adds fining modifier B thereto, after stirring, insulation reaction 30min is poured into a mould, finished product.
Specifically, the purity of above-mentioned lanthanum powder is 99.5%, and the purity of above-mentioned barium fluoride is 98.0%, and the purity of above-mentioned fine aluminium is
99.8%。
Specifically, above-mentioned steps（2）In the pressure of silane gas that is passed through be 1 × 104Pa。
Specifically, the weight of above-mentioned fining modifier A addition is the 1.3% of aluminium alloy weight, above-mentioned fining modifier B
Addition weight be aluminium alloy weight 2.4%.
Comparative example 1
Without fining modifier A, remaining operating procedure is identical with embodiment 1.
Comparative example 2
Without fining modifier B, remaining operating procedure is identical with embodiment 2.
Comparative example 3
Without fining modifier A and fining modifier B, remaining operating procedure is identical with embodiment 1.
Fine degenerate processing is carried out to A356 aluminium alloys with the method for each embodiment and comparative example respectively, then tests being made
Aluminium alloy tensile strength and elongation percentage, test result is as shown in table 1：
The intensity of the aluminium alloy of the fine degenerate of table 1 processing
| Project | Tensile strength MPa | Elongation percentage % |
| Embodiment 1 | 381.24 | 10.1 |
| Comparative example 1 | 276.11 | 7.3 |
| Embodiment 2 | 385.77 | 10.4 |
| Comparative example 2 | 271.0 | 6.9 |
| Embodiment 3 | 388.2 | 11.0 |
| Comparative example 3 | 220.1 | 3.8 |
As shown in Table 1, the method for the fine degenerate processing provided using the present invention, has been obviously improved every mechanics of aluminium alloy
Performance, extends the application of aluminium alloy.
It should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention and it is unrestricted.Although with reference to compared with
The present invention is described in detail good embodiment, it will be understood by those within the art that, can be to the technology of invention
Scheme is modified or equivalent substitution, and without departing from the scope of technical solution of the present invention, it all should cover the power in the present invention
In sharp claimed range.
Claims (4)
1. a kind of method of aluminium alloy fine degenerate processing, it is characterised in that including following operating procedure：
（1）By weight, after 20-25 parts of lanthanum powder, 10-14 parts of barium fluorides, 90-100 parts of fine aluminiums being mixed, it is heated to aluminium complete
After fusing, strong stirring, room temperature is cooled to, fining modifier A is made；
（2）Titanium valve is placed in vacuum chamber, silane gas is passed through thereto, the temperature in vacuum chamber is heated to 390-420
DEG C, after being incubated 5-7 hours, terminate reaction, be down to after room temperature, fining modifier B is made；
（3）Aluminium alloy is heated to after melting state 10-20min, fining modifier A is first added thereto, after stirring, is protected
Temperature reaction 15-20min, then fining modifier B is added thereto, after stirring, insulation reaction 20-30min is poured into a mould,
Finished product.
2. the method for a kind of aluminium alloy fine degenerate processing according to claim 1, it is characterised in that above-mentioned lanthanum powder
Purity is 99.5%, and the purity of above-mentioned barium fluoride is 98.0%, and the purity of above-mentioned fine aluminium is 99.8%.
3. a kind of method of aluminium alloy fine degenerate processing according to claim 1, it is characterised in that above-mentioned steps
（2）In the pressure of silane gas that is passed through be 1 × 104Pa。
4. the method for a kind of aluminium alloy fine degenerate processing according to claim 1, it is characterised in that above-mentioned refinement becomes
The weight of matter agent A addition is the 0.9-1.3% of aluminium alloy weight, and the weight of above-mentioned fining modifier B addition is aluminium alloy weight
The 1.7-2.4% of amount.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107841198A (en) * | 2017-10-31 | 2018-03-27 | 枞阳县新天地高新材料有限公司 | A kind of preparation method of high glaze water aluminum-silver slurry |
| CN110273089A (en) * | 2019-07-26 | 2019-09-24 | 福建祥鑫股份有限公司 | A kind of transmission tower sub-frame structural aluminum alloy and preparation method thereof |
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|---|---|---|---|---|
| CN1298965A (en) * | 1999-12-03 | 2001-06-13 | 郑州大学 | Process for preparing Ti-contained Al alloy |
| CN1352312A (en) * | 2001-11-07 | 2002-06-05 | 华中科技大学 | Al-Ti-C crystal grain fining agent and its producing process |
| CN1544678A (en) * | 2003-11-20 | 2004-11-10 | 上海交通大学 | In-situ synthesized TiC-AI composite ultra-fine grain refining agent and process for preparing same |
| US20130248050A1 (en) * | 2011-02-18 | 2013-09-26 | Brunel University | Method of refining metal alloys |
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2017
- 2017-08-02 CN CN201710650847.8A patent/CN107236873B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1298965A (en) * | 1999-12-03 | 2001-06-13 | 郑州大学 | Process for preparing Ti-contained Al alloy |
| CN1352312A (en) * | 2001-11-07 | 2002-06-05 | 华中科技大学 | Al-Ti-C crystal grain fining agent and its producing process |
| CN1544678A (en) * | 2003-11-20 | 2004-11-10 | 上海交通大学 | In-situ synthesized TiC-AI composite ultra-fine grain refining agent and process for preparing same |
| US20130248050A1 (en) * | 2011-02-18 | 2013-09-26 | Brunel University | Method of refining metal alloys |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107841198A (en) * | 2017-10-31 | 2018-03-27 | 枞阳县新天地高新材料有限公司 | A kind of preparation method of high glaze water aluminum-silver slurry |
| CN107841198B (en) * | 2017-10-31 | 2021-03-12 | 枞阳县新天地高新材料有限公司 | Preparation method of high-gloss water-based aluminum paste |
| CN110273089A (en) * | 2019-07-26 | 2019-09-24 | 福建祥鑫股份有限公司 | A kind of transmission tower sub-frame structural aluminum alloy and preparation method thereof |
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| CN107236873B (en) | 2018-10-23 |
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