CN103014439A - Material capable of preventing large grains from being produced in aluminium alloy sections - Google Patents
Material capable of preventing large grains from being produced in aluminium alloy sections Download PDFInfo
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- CN103014439A CN103014439A CN2012105058442A CN201210505844A CN103014439A CN 103014439 A CN103014439 A CN 103014439A CN 2012105058442 A CN2012105058442 A CN 2012105058442A CN 201210505844 A CN201210505844 A CN 201210505844A CN 103014439 A CN103014439 A CN 103014439A
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Abstract
The invention relates to a material capable of preventing large grains from being produced in aluminium alloy sections. The material provided by the invention comprises the following ingredients 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 provided by the invention better realizes that grains in the structure of aluminium alloy are fine and the growth of the grains is inhibited; and a uniform structure is guaranteed by virtue of a preparation process.
Description
Technical field
The invention belongs to the aluminium alloy preparation field, refer to that especially the material of large crystal grain appears in a kind of aluminium alloy extrusions that prevents.
Background technology
Because that aluminium alloy has is lightweight, intensity is high and corrosion resistant advantage, has been widely used in the fields such as vehicle manufacturing, machinery and building.In order to alleviate the weight of the finished product, the aluminium profile material that now uses is thin-walled, the beginning such as hollow, and for the aluminium alloy that uses as sheet material, existing production method mainly is to make by techniques such as extruding, but in extrusion process, the deflection of aluminum alloy blank, stress and heat up greatly regrow problem thereby crystal grain can occur in quenching process, and grain growing is too fast and form inhomogeneous coarse grain.Such aluminum alloy organization's structure all has a great impact 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 large crystal grain occur, by the technical program, can make the tiny and homogeneous microstructure of the crystal grain of aluminium alloy, improved the performance of product.
The present invention is achieved by the following technical solutions:
The material of large 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 large 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 is incubated 1-2 hour carries out the constant temperature extruding in 520 ± 20 ℃ quenching furnance, extrusion speed is at 1.5-2.5 m/min, and employing water liquid quenches and airblast quenching.
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 ℃, then carries out airblast quenching 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 fused at aluminium alloy of ferro element, 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 is incubated 1 hour carries out the constant temperature extruding in 520 ± 20 ℃ quenching furnance, extrusion speed is at 1.5-2.5 m/min, and employing water liquid quenches and airblast quenching; At first be that water liquid is quenched to 250-280 ℃, then carry out airblast quenching 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 is incubated 2 hours carries out the constant temperature extruding in 520 ± 20 ℃ quenching furnance, extrusion speed is at 1.5-2.5 m/min, and employing water liquid quenches and airblast quenching; At first be that water liquid is quenched to 250-280 ℃, then carry out airblast quenching 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 is incubated 2 hours carries out the constant temperature extruding in 520 ± 20 ℃ quenching furnance, extrusion speed is at 1.5-2.5 m/min, and employing water liquid quenches and airblast quenching; At first be that water liquid is quenched to 250-280 ℃, then carry out airblast quenching to room temperature.
Claims (2)
1. one kind prevents that the material of large 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. the material of large crystal grain appears in the described aluminium alloy extrusions that prevents according to claim 1, 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.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012105058442A CN103014439A (en) | 2012-11-26 | 2012-11-26 | Material capable of preventing large grains from being produced in aluminium alloy sections |
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| CN2012105058442A CN103014439A (en) | 2012-11-26 | 2012-11-26 | Material capable of preventing large grains from being produced in aluminium alloy sections |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105256191A (en) * | 2015-11-12 | 2016-01-20 | 郭芙 | Material avoiding large grains in aluminum alloy and preparation method |
| CN105349806A (en) * | 2015-11-12 | 2016-02-24 | 郭芙 | Preparation method of material capable of preventing large grains from appearing in aluminum alloy |
| CN106191556A (en) * | 2016-08-17 | 2016-12-07 | 椤惧缓 | A kind of material preventing aluminium alloy from big crystal grain occurring and preparation method |
| CN106591641A (en) * | 2016-11-23 | 2017-04-26 | 薛亚红 | Aluminium alloy capable of inhibiting formation of large crystal grains |
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| JP2006213942A (en) * | 2005-02-01 | 2006-08-17 | Kobe Steel Ltd | Aluminum alloy extruded shape material for rear side rail having excellent corrosion resistance |
| JP2010070847A (en) * | 2008-08-21 | 2010-04-02 | Aisin Keikinzoku Co Ltd | Al-Mg-Si-BASED ALUMINUM ALLOY EXTRUDED PRODUCT EXHIBITING EXCELLENT FATIGUE STRENGTH AND IMPACT FRACTURE RESISTANCE |
| WO2011134486A1 (en) * | 2010-04-26 | 2011-11-03 | Sapa Ab | Damage tolerant aluminium material having a layered microstructure |
| JP2012025976A (en) * | 2010-07-20 | 2012-02-09 | Sumitomo Light Metal Ind Ltd | METHOD OF MANUFACTURING Al-Mg-Si BASED ALUMINUM ALLOY PLATE EXCELLENT IN COAT BAKING HARDENABILITY AND FORMABILITY, AND HAVING AGING SUPPRESSION EFFECT AT ROOM TEMPERATURE |
| 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 |
| CN103184373A (en) * | 2012-11-26 | 2013-07-03 | 姚芸 | Material for preventing formation of large grains in aluminum alloy sections and preparation method thereof |
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2012
- 2012-11-26 CN CN2012105058442A patent/CN103014439A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2006213942A (en) * | 2005-02-01 | 2006-08-17 | Kobe Steel Ltd | Aluminum alloy extruded shape material for rear side rail having excellent corrosion resistance |
| JP2010070847A (en) * | 2008-08-21 | 2010-04-02 | Aisin Keikinzoku Co Ltd | Al-Mg-Si-BASED ALUMINUM ALLOY EXTRUDED PRODUCT EXHIBITING EXCELLENT FATIGUE STRENGTH AND IMPACT FRACTURE RESISTANCE |
| WO2011134486A1 (en) * | 2010-04-26 | 2011-11-03 | Sapa Ab | Damage tolerant aluminium material having a layered microstructure |
| JP2012025976A (en) * | 2010-07-20 | 2012-02-09 | Sumitomo Light Metal Ind Ltd | METHOD OF MANUFACTURING Al-Mg-Si BASED ALUMINUM ALLOY PLATE EXCELLENT IN COAT BAKING HARDENABILITY AND FORMABILITY, AND HAVING AGING SUPPRESSION EFFECT AT ROOM TEMPERATURE |
| 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 |
| CN103184373A (en) * | 2012-11-26 | 2013-07-03 | 姚芸 | Material for preventing formation of large grains in aluminum alloy sections and preparation method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105256191A (en) * | 2015-11-12 | 2016-01-20 | 郭芙 | Material avoiding large grains in aluminum alloy and preparation method |
| CN105349806A (en) * | 2015-11-12 | 2016-02-24 | 郭芙 | Preparation method of material capable of preventing large grains from appearing in aluminum alloy |
| CN106191556A (en) * | 2016-08-17 | 2016-12-07 | 椤惧缓 | A kind of material preventing aluminium alloy from big crystal grain occurring and preparation method |
| CN106591641A (en) * | 2016-11-23 | 2017-04-26 | 薛亚红 | Aluminium alloy capable of inhibiting formation of large crystal grains |
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Application publication date: 20130403 |