CN103184373A - Material for preventing formation of large grains in aluminum alloy sections and preparation method thereof - Google Patents
Material for preventing formation of large grains in aluminum alloy sections and preparation method thereof Download PDFInfo
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- CN103184373A CN103184373A CN2012105057613A CN201210505761A CN103184373A CN 103184373 A CN103184373 A CN 103184373A CN 2012105057613 A CN2012105057613 A CN 2012105057613A CN 201210505761 A CN201210505761 A CN 201210505761A CN 103184373 A CN103184373 A CN 103184373A
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Abstract
The invention relates to a material for preventing the formation of large grains in aluminum alloy sections and a preparation method thereof. The material is composed of the following components in percentage by weight: 0.58-0.61% of Mg, 0.03-0.035% of C, 0.75-0.78% of Si, 0.30-0.35% of Mn, 0.1-0.15% of Cr, 0.2-0.24% of Cu, 0.2-0.4% of Fe, 0.03-0.05% of Ti, 0.001-0.0015% of V, and the balance of Al. The material can well ensure small grains in the aluminum alloy microstructure and prevent the growth of grains. The uniformity of microstructure is guaranteed by the preparation process.
Description
Technical field
The invention belongs to the aluminium alloy preparation field, refer to that especially material and the preparation method of big crystal grain appear in a kind of aluminium alloy extrusions that prevents.
Background technology
Because that aluminium alloy has is in light weight, intensity is high and corrosion resistant advantage, has been widely used in fields such as vehicle manufacturing, machinery and building.In order to alleviate the weight of the finished product, now the aluminium mould assembly material of Shi Yonging is thin-walled, beginning such as hollow, and for the aluminium alloy that uses as sheet material, existing production method mainly is to make by technologies such as extruding, but in extrusion process, the deflection of aluminum alloy blank, stress and heat up greatly regrow problem thereby crystal grain can take place in quenching process, and grain growing is too fast and form inhomogeneous coarse grain.Such aluminum alloy organization's structure all has very big influence to mechanical property, anti-fatigue performance and the face corrosive nature of the finished product.
How can suppress the crystal grain regrowth of aluminium alloy in being processed into the section bar process, improve small grains in in-house ratio, even to guarantee aluminum alloy organization's internal structure, be one of major subjects of those skilled in the art.
Summary of the invention
The purpose of this invention is to provide a kind of aluminium alloy extrusions that prevents and material and the preparation method of big crystal grain occur, by the technical program, can make the tiny and homogeneous microstructure of crystal grain of aluminium alloy, improved the performance of product.
The present invention is achieved by the following technical solutions:
The material of big crystal grain appears in a kind of aluminium alloy extrusions that prevents, its composition is by weight percentage, the vanadium of the iron of the chromium of the silicon of the magnesium of 0.58-0.61%, the carbon of 0.03-0.035%, 0.75-0.78%, the manganese of 0.30-0.35%, 0.1-0.15%, the copper of 0.2-0.24%, 0.2-0.4%, the titanium of 0.03-0.05%, 0.001-0.0015%, and the aluminium of surplus.
As further improvement, the material of big crystal grain appears in described aluminium alloy extrusions, its composition is by weight percentage, 0.60% magnesium, 0.03% carbon, 0.75% silicon, 0.33% manganese, 0.12% chromium, 0.22% copper, 0.3% iron, 0.45% titanium, 0.0015% vanadium, and the aluminium of surplus.
Described preparation method is:
Batching, be by weight percentage, the vanadium of the iron of the chromium of the silicon of the magnesium of 0.58-0.61%, the carbon of 0.03-0.035%, 0.75-0.78%, the manganese of 0.30-0.35%, 0.1-0.15%, the copper of 0.2-0.24%, 0.2-0.4%, the titanium of 0.03-0.05%, 0.001-0.0015%, and the aluminium of surplus calculate batching;
Melting is smelted into above-mentioned batching liquid and is incubated 1-2 hour, carries out the constant temperature casting, adopts in temperature-fall period and at the uniform velocity lowers the temperature into aluminum alloy ingot;
Quench, aluminum alloy ingot be incubated 1-2 hour and carry out the constant temperature extruding 520 ± 20 ℃ quenching furnance in, extrusion speed 1.5-2.5 rice/minute, and the liquid quenching of employing water and air.
The described at the uniform velocity cooling rate of cooling maintains 15-20 ℃/minute.
Described quenching process divides two stages, at first is that water liquid is quenched to 250-280 ℃, carries out air then to room temperature.
The beneficial effect that the present invention compares with prior art is:
By in the technical program, adding titanium and v element, the growth that can realize better that the crystal grain of aluminum alloy organization inside is tiny and resist crystal grain; And by preparation technology, guaranteed the even of weave construction.
Embodiment
Below describe technical scheme of the present invention in detail by specific embodiment, should be understood that following specific embodiment only can be used for explaining the present invention and can not be used for explaining is limitation of the present invention.
In technical scheme of the present invention, add carbon and can better promote ferro element fused at aluminium alloy, improve dense structure's property, prevent the crystal grain overgrowth.
Embodiment 1
Described preparation method is:
Batching, be by weight percentage, 0.58% magnesium, 0.03% carbon, 0.75% silicon, 0.30% manganese, 0.1% chromium, 0.2% copper, 0.2% iron, 0.03% titanium, 0.001% vanadium, and the aluminium of surplus calculate batching;
Melting is smelted into above-mentioned batching liquid and is incubated 1 hour, carries out the constant temperature casting, adopts cooling rate to maintain 15-20 ℃/minute in temperature-fall period and at the uniform velocity lowers the temperature into aluminum alloy ingot;
Quench, aluminum alloy ingot be incubated 1 hour and carry out the constant temperature extruding 520 ± 20 ℃ quenching furnance in, extrusion speed 1.5-2.5 rice/minute, and the liquid quenching of employing water and air; At first be that water liquid is quenched to 250-280 ℃, carry out air then to room temperature.
Embodiment 2
Described preparation method is:
Batching, be by weight percentage, 0.61% magnesium, 0.035% carbon, 0.78% silicon, 0.35% manganese, 0.15% chromium, 0.24% copper, 0.4% iron, 0.05% titanium, 0.0015% vanadium, and the aluminium of surplus calculate batching;
Melting is smelted into above-mentioned batching liquid and is incubated 1.5 hours, carries out the constant temperature casting, adopts cooling rate to maintain 15-20 ℃/minute in temperature-fall period and at the uniform velocity lowers the temperature into aluminum alloy ingot;
Quench, aluminum alloy ingot be incubated 2 hours and carry out the constant temperature extruding 520 ± 20 ℃ quenching furnance in, extrusion speed 1.5-2.5 rice/minute, and the liquid quenching of employing water and air; At first be that water liquid is quenched to 250-280 ℃, carry out air then to room temperature.
Embodiment 3
Described preparation method is:
Batching, be by weight percentage, 0.60% magnesium, 0.03% carbon, 0.75% silicon, 0.33% manganese, 0.12% chromium, 0.22% copper, 0.3% iron, 0.45% titanium, 0.0015% vanadium, and the aluminium of surplus calculate batching;
Melting is smelted into above-mentioned batching liquid and is incubated 1.5 hours, carries out the constant temperature casting, adopts cooling rate to maintain 15-20 ℃/minute in temperature-fall period and at the uniform velocity lowers the temperature into aluminum alloy ingot;
Quench, aluminum alloy ingot be incubated 2 hours and carry out the constant temperature extruding 520 ± 20 ℃ quenching furnance in, extrusion speed 1.5-2.5 rice/minute, and the liquid quenching of employing water and air; At first be that water liquid is quenched to 250-280 ℃, carry out air then to room temperature.
Claims (5)
1. one kind prevents that the material of big crystal grain from appearring in aluminium alloy extrusions, it is characterized in that: its composition is by weight percentage, the vanadium of the iron of the chromium of the silicon of the magnesium of 0.58-0.61%, the carbon of 0.03-0.035%, 0.75-0.78%, the manganese of 0.30-0.35%, 0.1-0.15%, the copper of 0.2-0.24%, 0.2-0.4%, the titanium of 0.03-0.05%, 0.001-0.0015%, and the aluminium of surplus.
2. according to the described aluminium alloy extrusions that prevents of claim 1 material of big crystal grain appears, it is characterized in that: its composition is by weight percentage, 0.60% magnesium, 0.03% carbon, 0.75% silicon, 0.33% manganese, 0.12% chromium, 0.22% copper, 0.3% iron, 0.45% titanium, 0.0015% vanadium, and the aluminium of surplus.
3. one kind prevents that the material preparation method of big crystal grain from appearring in aluminium alloy extrusions, is characterized in that:
Batching, be by weight percentage, the vanadium of the iron of the chromium of the silicon of the magnesium of 0.58-0.61%, the carbon of 0.03-0.035%, 0.75-0.78%, the manganese of 0.30-0.35%, 0.1-0.15%, the copper of 0.2-0.24%, 0.2-0.4%, the titanium of 0.03-0.05%, 0.001-0.0015%, and the aluminium of surplus calculate batching;
Melting is smelted into above-mentioned batching liquid and is incubated 1-2 hour, carries out the constant temperature casting, adopts in temperature-fall period and at the uniform velocity lowers the temperature into aluminum alloy ingot;
Quench, aluminum alloy ingot be incubated 1-2 hour and carry out the constant temperature extruding 520 ± 20 ℃ quenching furnance in, extrusion speed 1.5-2.5 rice/minute, and the liquid quenching of employing water and air.
4. the material of big crystal grain occurs according to the described aluminium alloy extrusions that prevents of claim 3, it is characterized in that: the described at the uniform velocity cooling rate of cooling maintains 15-20 ℃/minute.
5. the material of big crystal grain occurs according to the described aluminium alloy extrusions that prevents of claim 3, it is characterized in that: described quenching process divides two stages, at first is that water liquid is quenched to 250-280 ℃, carries out air then to room temperature.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103014439A (en) * | 2012-11-26 | 2013-04-03 | 姚芸 | Material capable of preventing large grains from being produced in aluminium alloy sections |
| CN103789580A (en) * | 2012-11-26 | 2014-05-14 | 姚芸 | Preparation method of material for preventing aluminum alloy section from generating large crystal grain |
| CN105256191A (en) * | 2015-11-12 | 2016-01-20 | 郭芙 | Material avoiding large grains in aluminum alloy and preparation method |
| CN105349851A (en) * | 2015-11-12 | 2016-02-24 | 郭芙 | Material capable of preventing large grains from appearing in aluminum alloy |
| CN105349806A (en) * | 2015-11-12 | 2016-02-24 | 郭芙 | Preparation method of material capable of preventing large grains from appearing in aluminum alloy |
| CN111041289A (en) * | 2019-12-18 | 2020-04-21 | 山东友升铝业有限公司 | 6005A aluminum alloy for automobile and energy absorption box processing method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011134486A1 (en) * | 2010-04-26 | 2011-11-03 | Sapa Ab | Damage tolerant aluminium material having a layered microstructure |
| CN102690978A (en) * | 2012-06-21 | 2012-09-26 | 辽宁忠旺集团有限公司 | Method for inhibiting coarse grain formation of large-section large-width-height ratio aluminum alloy profile |
-
2012
- 2012-11-26 CN CN2012105057613A patent/CN103184373A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011134486A1 (en) * | 2010-04-26 | 2011-11-03 | Sapa Ab | Damage tolerant aluminium material having a layered microstructure |
| CN102690978A (en) * | 2012-06-21 | 2012-09-26 | 辽宁忠旺集团有限公司 | Method for inhibiting coarse grain formation of large-section large-width-height ratio aluminum alloy profile |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103014439A (en) * | 2012-11-26 | 2013-04-03 | 姚芸 | Material capable of preventing large grains from being produced in aluminium alloy sections |
| CN103789580A (en) * | 2012-11-26 | 2014-05-14 | 姚芸 | Preparation method of material for preventing aluminum alloy section from generating large crystal grain |
| CN105256191A (en) * | 2015-11-12 | 2016-01-20 | 郭芙 | Material avoiding large grains in aluminum alloy and preparation method |
| CN105349851A (en) * | 2015-11-12 | 2016-02-24 | 郭芙 | Material capable of preventing large grains from appearing in aluminum alloy |
| CN105349806A (en) * | 2015-11-12 | 2016-02-24 | 郭芙 | Preparation method of material capable of preventing large grains from appearing in aluminum alloy |
| CN111041289A (en) * | 2019-12-18 | 2020-04-21 | 山东友升铝业有限公司 | 6005A aluminum alloy for automobile and energy absorption box processing method |
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Application publication date: 20130703 |