CN104404324A - Al-Zn series aluminium alloy ingot and casting method thereof - Google Patents
Al-Zn series aluminium alloy ingot and casting method thereof Download PDFInfo
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- CN104404324A CN104404324A CN201410763473.7A CN201410763473A CN104404324A CN 104404324 A CN104404324 A CN 104404324A CN 201410763473 A CN201410763473 A CN 201410763473A CN 104404324 A CN104404324 A CN 104404324A
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Abstract
The application belongs to the field of alloys, and particularly relates to an Al-Zn series aluminium alloy ingot and a casting method thereof. The casting method comprises the following steps: (a) performing melt blending on an aluminium source, a copper source, a magnesium source, a zinc source and a zirconium source to obtain an aluminium alloy melt comprising 2.0-2.6 wt% of Cu, 1.9-2.6 wt% of Mg, 5.7-6.7 wt% of Zn, 0.08-0.16 wt% of Zr, and the balance of Al; (b) casting the aluminium alloy melt to obtain the Al-Zn series aluminium alloy ingot. Through the optimization of alloy compositions in the casting process, the nondestructive inspection qualification rate of the aluminium alloy ingot is improved. Experimental results show that the nondestructive inspection qualification rate of the Al-Zn series aluminium alloy ingot prepared by adopting the casting method provided by the application of the invention is higher than 90%.
Description
Technical field
The invention belongs to alloy field, particularly relate to a kind of Al-Zn line aluminium alloy cast ingot and castmethod thereof.
Background technology
Three general orientation of world today's scientific development: information, material, the energy, have become one of standard of a measurement national science and technology strength.And Materials science wherein, become the key point leading every subjects to develop especially.The Improvement and development of traditional classical material property and the development of composite material have become two main research directions.After entering 21 century, Materials science is just towards the future development of the excellent comprehensive performance of high strength, high tenacity, high heat resistance etc., and tempo is very swift and violent.As the Aluminum-aluminum alloy of one of the important materials of modern industry, it is always the emphasis that people pay close attention to.There is due to aluminium alloy the overall merit that other metallic substance such as intensity is high, density is little, corrosion-resistant, easy processing, aboundresources are incomparable, it is made to be related to the industry-by-industry of people's livelihood, as being used widely in the fields such as aerospace, communications and transportation, power electronics, building packaging.
Al-Zn line aluminium alloy is structured material main in existing aerospace industries, and at present, on the military-civil machine in various countries, the structured material ratio of 70 ~ 80% is occupied by aluminium alloy in the world, and wherein major part is Al-Zn line aluminium alloy.In the last few years, along with developing rapidly of modern space flight and aviation and communications and transportation cause, increasingly urgent to the requirement improving Al-Zn line aluminium alloy production capacity, but the flaw detection qualification rate of Al-Zn line aluminium alloy cast ingot prepared by existing castmethod is lower, seriously hinders the raising of Al-Zn line aluminium alloy production capacity.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of Al-Zn line aluminium alloy cast ingot and castmethod thereof, castmethod provided by the invention can improve the flaw detection qualification rate of aluminium alloy cast ingot.
The invention provides a kind of Al-Zn line aluminium alloy cast ingot, comprise following component:
The Cu of 2.0 ~ 2.6wt%;
The Mg of 1.9 ~ 2.6wt%;
The Zn of 5.7 ~ 6.7wt%;
The Zr of 0.08 ~ 0.16wt%;
The Al of surplus.
Preferably, described aluminium alloy cast ingot comprises the Cu of 2.15 ~ 2.6wt%.
Preferably, described aluminium alloy cast ingot comprises the Mg of 2.2 ~ 2.6wt%.
Preferably, described aluminium alloy cast ingot comprises the Zn of 5.9 ~ 6.7wt%.
Preferably, described aluminium alloy cast ingot comprises the Zr of 0.11 ~ 0.16wt%.
The invention provides a kind of castmethod of Al-Zn line aluminium alloy, comprise the following steps:
A), aluminium source, Tong Yuan, magnesium source, zinc source and zirconium source melt blending, obtain aluminium alloy melt;
Described aluminium alloy melt comprises: the Al of the Cu of 2.0 ~ 2.6wt%, the Mg of 1.9 ~ 2.6wt%, the Zn of 5.7 ~ 6.7wt%, the Zr of 0.08 ~ 0.16wt% and surplus;
B), described aluminium alloy melt casts, and obtains Al-Zn line aluminium alloy cast ingot.
Preferably, the temperature of described casting is 750 ~ 775 DEG C; The speed of described casting is 11 ~ 45mm/min.
Preferably, the cooling water pressure in described castingprocesses is 0.02 ~ 0.12MPa; Cooling water flow in described castingprocesses is 40 ~ 180m
3/ h.
Preferably, the mode of described casting is same level casting.
Preferably, step b) in, before described aluminium alloy melt is cast, first preheating is carried out to the equipment of casting.
Compared with prior art, the invention provides a kind of Al-Zn line aluminium alloy cast ingot and castmethod thereof.Castmethod provided by the invention comprises the following steps: a), aluminium source, Tong Yuan, magnesium source, zinc source and zirconium source melt blending, obtain aluminium alloy melt; Described aluminium alloy melt comprises: the Al of the Cu of 2.0 ~ 2.6wt%, the Mg of 1.9 ~ 2.6wt%, the Zn of 5.7 ~ 6.7wt%, the Zr of 0.08 ~ 0.16wt% and surplus; B), described aluminium alloy melt casts, and obtains Al-Zn line aluminium alloy cast ingot.The present invention, by optimized alloy component in castingprocesses, improves the flaw detection qualification rate of aluminium alloy cast ingot.Experimental result shows, the flaw detection qualification rate of the Al-Zn line aluminium alloy cast ingot adopting castmethod provided by the invention to obtain is higher than 90%.
Embodiment
Be clearly and completely described to the technical scheme in the embodiment of the present invention below, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
The invention provides a kind of Al-Zn line aluminium alloy cast ingot, comprise following component:
The Cu of 2.0 ~ 2.6wt%;
The Mg of 1.9 ~ 2.6wt%;
The Zn of 5.7 ~ 6.7wt%;
The Zr of 0.08 ~ 0.16wt%;
The Al of surplus.
Al-Zn line aluminium alloy cast ingot provided by the invention comprises Cu, Mg, Zn, Zr and Al.Wherein, the content of described Cu is 2.0 ~ 2.6wt%, is preferably 2.15 ~ 2.6wt%; The content of described Mg is 1.9 ~ 2.6wt%, is preferably 2.2 ~ 2.6wt%; The content of described Zn is 5.7 ~ 6.7wt%, is preferably 5.9 ~ 6.7wt%; The content of described Zr is 0.08 ~ 0.16wt%, is preferably 0.11 ~ 0.16wt%.
In an embodiment provided by the invention, described Al-Zn line aluminium alloy cast ingot comprises the Al of the Cu of 2.15 ~ 2.6wt%, Mg, the Zn of 5.9 ~ 6.7wt% of 2.2 ~ 2.6wt%, the Zr of 0.11 ~ 0.16wt% and surplus; In another embodiment provided by the invention, described Al-Zn line aluminium alloy cast ingot comprises the Zr of Zn, 0.11wt% of Mg, 5.9wt% of Cu, 2.2wt% of 2.15wt% and the Al of surplus.
Al-Zn line aluminium alloy cast ingot provided by the invention optimizes alloy compositions, has good mechanical property.
The invention provides a kind of castmethod of Al-Zn line aluminium alloy, comprise the following steps:
A), aluminium source, Tong Yuan, magnesium source, zinc source and zirconium source melt blending, obtain aluminium alloy melt;
Described aluminium alloy melt comprises: the Al of the Cu of 2.0 ~ 2.6wt%, the Mg of 1.9 ~ 2.6wt%, the Zn of 5.7 ~ 6.7wt%, the Zr of 0.08 ~ 0.16wt% and surplus;
B), described aluminium alloy melt casts, and obtains Al-Zn line aluminium alloy cast ingot.
In castmethod provided by the invention, first by aluminium source, Tong Yuan, magnesium source, zinc source and zirconium source melt blending.Wherein, described copper source is preferably Al-Cu master alloy, and in described Al-Cu master alloy, the content of Cu is preferably 30 ~ 40wt%; Described zirconium source is preferably Al-Zr master alloy, and in described Al-Zr master alloy, the content of Zr is preferably 4 ~ 10wt%; Described magnesium source is preferably magnesium; Described zinc source is preferably zinc; Described aluminium source is preferably aluminium and the master alloy containing aluminium.Described aluminium alloy melt comprises the Al of the Cu of 2.0 ~ 2.6wt%, Mg, the Zn of 5.7 ~ 6.7wt% of 1.9 ~ 2.6wt%, the Zr of 0.08 ~ 0.16wt% and surplus, preferably include the Al of the Cu of 2.15 ~ 2.6wt%, Mg, the Zn of 5.9 ~ 6.7wt% of 2.2 ~ 2.6wt%, the Zr of 0.11 ~ 0.16wt% and surplus, more preferably comprise the Zr of Zn, 0.11wt% of Mg, 5.9wt% of Cu, 2.2wt% of 2.15wt% and the Al of surplus.The temperature of the present invention to described melt blending is not particularly limited, and can make above-mentioned source metal melting, is preferably 730 ~ 780 DEG C.After aluminium source, Tong Yuan, magnesium source, zinc source and zirconium source melt blending are even, obtain aluminium alloy melt.
After obtaining aluminium alloy melt, described melt is cast.The mode of the present invention to described casting is not particularly limited, and is preferably same level casting.The temperature of described casting is preferably 750 ~ 775 DEG C.The speed of described casting is preferably 11 ~ 45mm/min.Cooling water pressure in described castingprocesses is preferably 0.02 ~ 0.12MPa.Cooling water flow in described castingprocesses is preferably 40 ~ 180m
3/ h.After aluminium alloy melt completes casting, obtain Al-Zn line aluminium alloy cast ingot.
In castmethod provided by the invention, preferably when casting the ingot casting of different diameter size, select different casting conditions.
In an embodiment provided by the invention, casting diameter is the filled circles ingot casting of 270mm, and casting temp is now 750 ~ 770 DEG C, and casting speed is 40 ~ 45mm/min, and casting cooling water pressure is 0.02 ~ 0.12mPa, and casting cooling water flow is 40 ~ 130m
3/ h.
In another embodiment provided by the invention, casting diameter is the filled circles ingot casting of 290mm, and casting temp is now 750 ~ 770 DEG C, and casting speed is 40 ~ 45mm/min, and casting cooling water pressure is 0.02 ~ 0.12mPa, and casting cooling water flow is 40 ~ 130m
3/ h.
In other embodiments provided by the invention, casting diameter is the filled circles ingot casting of 310mm, and casting temp is now 750 ~ 770 DEG C, and casting speed is 35 ~ 40mm/min, and casting cooling water pressure is 0.02 ~ 0.12mPa, and casting cooling water flow is 40 ~ 130m
3/ h.
In other embodiments provided by the invention, casting diameter is the filled circles ingot casting of 360mm, and casting temp is now 750 ~ 770 DEG C, and casting speed is 30 ~ 35mm/min, and casting cooling water pressure is 0.02 ~ 0.12mPa, and casting cooling water flow is 40 ~ 130m
3/ h.
In other embodiments provided by the invention, casting diameter is the filled circles ingot casting of 405mm, and casting temp is now 750 ~ 770 DEG C, and casting speed is 27 ~ 30mm/min, and casting cooling water pressure is 0.02 ~ 0.12mPa, and casting cooling water flow is 40 ~ 130m
3/ h.
In other embodiments provided by the invention, casting diameter is the filled circles ingot casting of 482mm, and casting temp is now 750 ~ 770 DEG C, and casting speed is 24 ~ 27mm/min, and casting cooling water pressure is 0.02 ~ 0.08mPa, and casting cooling water flow is 60 ~ 160m
3/ h.
In other embodiments provided by the invention, casting diameter is the filled circles ingot casting of 550mm, and casting temp is now 750 ~ 770 DEG C, and casting speed is 19 ~ 22mm/min, and casting cooling water pressure is 0.02 ~ 0.08mPa, and casting cooling water flow is 60 ~ 180m
3/ h.
In other embodiments provided by the invention, casting diameter is the filled circles ingot casting of 630mm, and casting temp is now 760 ~ 775 DEG C, and casting speed is 17 ~ 19mm/min, and casting cooling water pressure is 0.02 ~ 0.08mPa, and casting cooling water flow is 60 ~ 180m
3/ h.
In other embodiments provided by the invention, casting diameter is the filled circles ingot casting of 750mm, and casting temp is now 760 ~ 775 DEG C, and casting speed is 13 ~ 17mm/min, and casting cooling water pressure is 0.02 ~ 0.08mPa, and casting cooling water flow is 40 ~ 140m
3/ h.
In other embodiments provided by the invention, casting diameter is the filled circles ingot casting of 775mm, and casting temp is now 760 ~ 775 DEG C, and casting speed is 13 ~ 17mm/min, and casting cooling water pressure is 0.02 ~ 0.08mPa, and casting cooling water flow is 40 ~ 140m
3/ h.
In other embodiments provided by the invention, casting diameter is the filled circles ingot casting of 800 ~ 900mm, and casting temp is now 760 ~ 775 DEG C, and casting speed is 11 ~ 13mm/min, casting cooling water pressure is 0.02 ~ 0.08mPa, and casting cooling water flow is 40 ~ 140m
3/ h.
In other embodiments provided by the invention, casting diameter is the filled circles ingot casting of 270 ~ 550mm, and casting temp is now 750 ~ 770 DEG C, and casting speed is 19 ~ 45mm/min, casting cooling water pressure is 0.02 ~ 0.12mPa, and casting cooling water flow is 40 ~ 180m
3/ h.
In other embodiments provided by the invention, casting diameter is the filled circles ingot casting of 630 ~ 900mm, and casting temp is now 760 ~ 775 DEG C, and casting speed is 11 ~ 19mm/min, casting cooling water pressure is 0.02 ~ 0.12mPa, and casting cooling water flow is 40 ~ 180m
3/ h.
In other embodiments provided by the invention, casting diameter is the filled circles ingot casting of 270 ~ 405mm, and casting temp is now 750 ~ 770 DEG C, and casting speed is 27 ~ 45mm/min, casting cooling water pressure is 0.02 ~ 0.12mPa, and casting cooling water flow is 40 ~ 130m
3/ h.
In other embodiments provided by the invention, casting diameter is the filled circles ingot casting of 482 ~ 900mm, and casting temp is now 750 ~ 775 DEG C, and casting speed is 11 ~ 27mm/min, casting cooling water pressure is 0.02 ~ 0.08mPa, and casting cooling water flow is 40 ~ 180m
3/ h.
In other embodiments provided by the invention, casting diameter is the filled circles ingot casting of 550 ~ 630mm, and casting temp is now 750 ~ 775 DEG C, and casting speed is 17 ~ 22mm/min, casting cooling water pressure is 0.02 ~ 0.08mPa, and casting cooling water flow is 60 ~ 180m
3/ h.
In other embodiments provided by the invention, casting diameter is the filled circles ingot casting of 750 ~ 900mm, and casting temp is now 760 ~ 775 DEG C, and casting speed is 11 ~ 17mm/min, casting cooling water pressure is 0.02 ~ 0.08mPa, and casting cooling water flow is 40 ~ 140m
3/ h.
In the present invention, described aluminium alloy melt, before casting, preferably first carries out preheating to the equipment of casting.The temperature of described preheating is preferably consistent with the casting temp of described aluminium alloy melt.In the present invention, before aluminium alloy melt is cast, first preheating is carried out to the equipment of casting and casting equipment can be made before casting to be just in the condition of high temperature, thus reduce the temperature drop loss of aluminium alloy casting, reduce the alumina diaphragm defect of aluminium alloy cast ingot.In an embodiment provided by the invention, adopt crystallizer to cast aluminium alloy melt, before casting, the chute in crystallizer, flow table and distribution hopper are toasted.
In the present invention, by optimized alloy component in castingprocesses, improve the flaw detection qualification rate of aluminium alloy cast ingot.Experimental result shows, the flaw detection qualification rate of the Al-Zn line aluminium alloy cast ingot adopting castmethod provided by the invention to obtain is higher than 90%.
For the purpose of clearer, be described in detail below by following examples.
Embodiment 1
Add in stove by the percentage composition of table 1 by Al-40wt%Cu master alloy, Al-4wt%Zr master alloy, pure zinc, pure magnesium and fine aluminium, melt blending at 760 DEG C, obtains aluminium alloy melt.Cast aluminium alloy melt, arranging casting temp is 750 ~ 770 DEG C, and casting speed is 24 ~ 27mm/min, and cooling water pressure is 0.02 ~ 0.08MPa, and cooling water flow is 60 ~ 160m
3/ h.After casting terminates, obtain the aluminum alloy solid circle ingot casting that diameter is 482mm.
Aluminium alloy cast ingot constituent mass per-cent in table 1 embodiment 1
| Element | Cu | Mg | Zn | Zr | Al |
| Content Wt% | 2.15 | 2.6 | 5.90 | 0.16 | Surplus |
The aluminium alloy cast ingot obtained to 100 embodiments 1 is detected a flaw, and wherein, 10 ingot castings exist detection defects, and flaw detection qualification rate is 90%.
Embodiment 2
Add in stove by the percentage composition of table 2 by Al-40wt%Cu master alloy, Al-4wt%Zr master alloy, pure zinc, pure magnesium and fine aluminium, melt blending at 760 DEG C, obtains aluminium alloy melt.Cast aluminium alloy melt, arranging casting temp is 750 ~ 770 DEG C, and casting speed is 24 ~ 27mm/min, and cooling water pressure is 0.02 ~ 0.08MPa, and cooling water flow is 60 ~ 160m
3/ h.After casting terminates, obtain the aluminum alloy solid circle ingot casting that diameter is 482mm.
Aluminium alloy cast ingot constituent mass per-cent in table 2 embodiment 2
| Element | Cu | Mg | Zn | Zr | Al |
| Content Wt% | 2.6 | 2.20 | 6.70 | 0.11 | Surplus |
The aluminium alloy cast ingot obtained to 100 embodiments 2 is detected a flaw, and wherein, 10 ingot castings exist detection defects, and flaw detection qualification rate is 90%.
Embodiment 3
Add in stove by the percentage composition of table 3 by Al-40wt%Cu master alloy, Al-4wt%Zr master alloy, pure zinc, pure magnesium and fine aluminium, melt blending at 760 DEG C, obtains aluminium alloy melt.Cast aluminium alloy melt, arranging casting temp is 750 ~ 770 DEG C, and casting speed is 24 ~ 27mm/min, and cooling water pressure is 0.02 ~ 0.08MPa, and cooling water flow is 60 ~ 160m
3/ h.After casting terminates, obtain the aluminum alloy solid circle ingot casting that diameter is 482mm.
Aluminium alloy cast ingot constituent mass per-cent in table 3 embodiment 3
| Element | Cu | Mg | Zn | Zr | Al |
| Content Wt% | 2.15 | 2.20 | 5.90 | 0.11 | Surplus |
The aluminium alloy cast ingot obtained to 100 embodiments 3 is detected a flaw, and wherein, 5 ingot castings exist detection defects, and flaw detection qualification rate is 95%.
Embodiment 4
Add in stove by the percentage composition of table 4 by fine aluminium, Al-40wt%Cu master alloy, Al-4wt%Zr master alloy, pure zinc, pure magnesium and fine aluminium, melt blending at 760 DEG C, obtains aluminium alloy melt.Chute in crystallizer, flow table and distribution hopper are toasted, after being baked to 750 ~ 770 DEG C, aluminium alloy melt is added crystallizer, the mode that aluminium alloy melt adopts same level to cast in a crystallizer is cast, arranging casting temp is 750 ~ 770 DEG C, casting speed is 24 ~ 27mm/min, and cooling water pressure is 0.02 ~ 0.08MPa, and cooling water flow is 60 ~ 160m
3/ h.After casting terminates, obtain the aluminum alloy solid circle ingot casting that diameter is 482mm.
Aluminium alloy cast ingot constituent mass per-cent in table 4 embodiment 4
| Element | Cu | Mg | Zn | Zr | Al |
| Content Wt% | 2.15 | 2.20 | 5.90 | 0.11 | Surplus |
The aluminium alloy cast ingot obtained to 100 embodiments 4 is detected a flaw, and wherein, there is detection defects without ingot casting, flaw detection qualification rate is 100%.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. an Al-Zn line aluminium alloy cast ingot, comprises following component:
The Cu of 2.0 ~ 2.6wt%;
The Mg of 1.9 ~ 2.6wt%;
The Zn of 5.7 ~ 6.7wt%;
The Zr of 0.08 ~ 0.16wt%;
The Al of surplus.
2. aluminium alloy cast ingot according to claim 1, is characterized in that, comprises the Cu of 2.15 ~ 2.6wt%.
3. aluminium alloy cast ingot according to claim 1, is characterized in that, comprises the Mg of 2.2 ~ 2.6wt%.
4. aluminium alloy cast ingot according to claim 1, is characterized in that, comprises the Zn of 5.9 ~ 6.7wt%.
5. aluminium alloy cast ingot according to claim 1, is characterized in that, comprises the Zr of 0.11 ~ 0.16wt%.
6. a castmethod for Al-Zn line aluminium alloy, comprises the following steps:
A), aluminium source, Tong Yuan, magnesium source, zinc source and zirconium source melt blending, obtain aluminium alloy melt;
Described aluminium alloy melt comprises: the Al of the Cu of 2.0 ~ 2.6wt%, the Mg of 1.9 ~ 2.6wt%, the Zn of 5.7 ~ 6.7wt%, the Zr of 0.08 ~ 0.16wt% and surplus;
B), described aluminium alloy melt casts, and obtains Al-Zn line aluminium alloy cast ingot.
7. castmethod according to claim 6, is characterized in that, the temperature of described casting is 750 ~ 775 DEG C; The speed of described casting is 11 ~ 45mm/min.
8. castmethod according to claim 6, is characterized in that, the cooling water pressure in described castingprocesses is 0.02 ~ 0.12MPa; Cooling water flow in described castingprocesses is 40 ~ 180m
3/ h.
9. castmethod according to claim 6, is characterized in that, the mode of described casting is same level casting.
10. castmethod according to claim 6, is characterized in that, step b) in, before described aluminium alloy melt is cast, first preheating is carried out to the equipment of casting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410763473.7A CN104404324A (en) | 2014-12-12 | 2014-12-12 | Al-Zn series aluminium alloy ingot and casting method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410763473.7A CN104404324A (en) | 2014-12-12 | 2014-12-12 | Al-Zn series aluminium alloy ingot and casting method thereof |
Publications (1)
| Publication Number | Publication Date |
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| CN104404324A true CN104404324A (en) | 2015-03-11 |
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Family Applications (1)
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|---|---|---|---|
| CN201410763473.7A Pending CN104404324A (en) | 2014-12-12 | 2014-12-12 | Al-Zn series aluminium alloy ingot and casting method thereof |
Country Status (1)
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|---|---|
| CN (1) | CN104404324A (en) |
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2014
- 2014-12-12 CN CN201410763473.7A patent/CN104404324A/en active Pending
Non-Patent Citations (2)
| Title |
|---|
| 孙立明等: "Zr 对Al-Zn-Mg-Cu 合金组织和性能的影响", 《特种铸造及有色合金》 * |
| 陈渝等: "同水平密排热顶铸造7075铝合金扁锭工艺研究", 《轻合金加工技术》 * |
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