CN106834826A - A kind of aluminium alloy strips and its manufacture method - Google Patents
A kind of aluminium alloy strips and its manufacture method Download PDFInfo
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- CN106834826A CN106834826A CN201611199315.9A CN201611199315A CN106834826A CN 106834826 A CN106834826 A CN 106834826A CN 201611199315 A CN201611199315 A CN 201611199315A CN 106834826 A CN106834826 A CN 106834826A
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- cold rolling
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- ingot casting
- aluminium alloy
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- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 119
- 238000000034 method Methods 0.000 title claims abstract description 62
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 58
- 238000005097 cold rolling Methods 0.000 claims abstract description 178
- 238000000137 annealing Methods 0.000 claims abstract description 125
- 238000005266 casting Methods 0.000 claims abstract description 116
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 40
- 239000012535 impurity Substances 0.000 claims abstract description 37
- 239000000203 mixture Substances 0.000 claims abstract description 29
- 229910052742 iron Inorganic materials 0.000 claims abstract description 26
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 26
- 238000005098 hot rolling Methods 0.000 claims abstract description 18
- 238000005096 rolling process Methods 0.000 claims description 11
- 239000000463 material Substances 0.000 description 71
- 239000000956 alloy Substances 0.000 description 54
- 229910052751 metal Inorganic materials 0.000 description 50
- 239000002184 metal Substances 0.000 description 50
- 239000011777 magnesium Substances 0.000 description 49
- 229910045601 alloy Inorganic materials 0.000 description 47
- 238000003801 milling Methods 0.000 description 45
- 229910052782 aluminium Inorganic materials 0.000 description 40
- 238000002791 soaking Methods 0.000 description 31
- 239000004411 aluminium Substances 0.000 description 30
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 30
- 239000011572 manganese Substances 0.000 description 30
- 238000009966 trimming Methods 0.000 description 27
- 230000008859 change Effects 0.000 description 17
- 238000010438 heat treatment Methods 0.000 description 13
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 12
- 238000011056 performance test Methods 0.000 description 11
- 229910000831 Steel Inorganic materials 0.000 description 10
- KMWBBMXGHHLDKL-UHFFFAOYSA-N [AlH3].[Si] Chemical compound [AlH3].[Si] KMWBBMXGHHLDKL-UHFFFAOYSA-N 0.000 description 10
- -1 aluminium manganese Chemical compound 0.000 description 10
- 238000007872 degassing Methods 0.000 description 10
- 238000009413 insulation Methods 0.000 description 10
- 238000002844 melting Methods 0.000 description 10
- 230000008018 melting Effects 0.000 description 10
- 238000000746 purification Methods 0.000 description 10
- 238000007670 refining Methods 0.000 description 10
- 238000010079 rubber tapping Methods 0.000 description 10
- 239000010959 steel Substances 0.000 description 10
- 238000010998 test method Methods 0.000 description 10
- 230000015572 biosynthetic process Effects 0.000 description 9
- 230000007547 defect Effects 0.000 description 9
- 238000007689 inspection Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 9
- 238000004886 process control Methods 0.000 description 9
- 238000012545 processing Methods 0.000 description 7
- 229910052804 chromium Inorganic materials 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 229910052725 zinc Inorganic materials 0.000 description 3
- 208000037656 Respiratory Sounds Diseases 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000002354 inductively-coupled plasma atomic emission spectroscopy Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000005482 strain hardening Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- 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
- C22C21/06—Alloys based on aluminium with magnesium as the next major constituent
- C22C21/08—Alloys based on aluminium with magnesium as the next major constituent with silicon
-
- 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
-
- 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
- C22C1/03—Making non-ferrous alloys by melting using master alloys
-
- 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
- C22C21/06—Alloys based on aluminium with magnesium as the next major constituent
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
- C22F1/047—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with magnesium as the next major constituent
Abstract
The present invention provides a kind of aluminium alloy strips and its manufacture method.The manufacture method of aluminium alloy strips of the invention, comprises the following steps：1) all heat-treated is carried out to ingot casting；2) hot rolling is carried out to the ingot casting through all heat-treated；3) cold rolling and annealing is carried out to hot rolled ingot casting；Wherein, the composition of the ingot casting is：Si：≤ 0.10wt%, Fe：≤ 0.2wt%, Mn：0.18 0.25wt%, Mg：5.0 6.5wt%, balance of Al and inevitable impurity.The aluminium alloy strips tensile strength and yield strength manufactured using manufacture method of the present invention are high, excellent combination property.
Description
Technical field
The present invention relates to a kind of aluminium alloy, and in particular to a kind of aluminium alloy strips and its manufacture method.
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.The main alloy element of 5 line aluminium alloys is Mg, with the increase of Mg contents,
The intensity of aluminum alloy materials is improved, but plasticity is decreased, and process industrial art performance is deteriorated therewith, so that following process phase
To difficulty.Therefore, 5 line aluminium alloys are generally controlled below 5.0% Mg contents.
5182 alloys are a kind of 5 representative line aluminium alloys, consisting of：Si：0.10wt%, Fe：0.2wt%,
Mn：0.3wt%, Mg：4.8wt%, balance of Al and inevitable impurity.The manufacture method of 5182H32 alloys is usually：Press
After set component carries out aluminium alloy melt treatment, alloy cast ingot is cast as；Ingot casting is carried out into soaking, heating, hot rolling successively, is made
The coils of hot rolled of 6.5mm left and right thicknesses；After coils of hot rolled is cold-rolled into 2.0mm or so, annealing, and it is cold-rolled to 0.6mm；It is above-mentioned
The tensile strength of 5182H32 alloys is 317MPa, and yield strength is 234MPa, elongation percentage 9%.
Mg contents are usually less than 5% in existing aluminium alloy, although processing is relatively easy, under identical elongation percentage,
Tensile strength and yield strength are relatively low, it is impossible to meet high intensity and use needs.It would therefore be highly desirable to it is good to develop a kind of combination property
Good aluminum alloy materials.
The content of the invention
The present invention provides a kind of aluminium alloy strips and its manufacture method, and the aluminium alloy strips prepared using the manufacture method are resisted
Tensile strength and yield strength are high, excellent combination property.
The present invention provides a kind of manufacture method of aluminium alloy strips, comprises the following steps：
1) all heat-treated is carried out to ingot casting；
2) hot rolling is carried out to the ingot casting through all heat-treated；
3) cold rolling and annealing is carried out to hot rolled ingot casting；
Wherein, the composition of the ingot casting is：
Si：≤ 0.10wt%, Fe：≤ 0.2wt%, Mn：0.18-0.25wt%, Mg：5.0-6.5wt%, balance of Al and
Inevitable impurity.
In the present invention, more than 5.0% is arranged on for manufacturing the Mg contents of the ingot casting of aluminium alloy strips, while Mn contents
Control can be overcome in aluminum alloy materials as Mg contents increase in 0.18-0.25wt% using ingot casting manufacture aluminium alloy strips
Plus and the plasticity reduction that brings and process industrial art performance the problems such as be deteriorated, the processing of aluminum alloy materials when improving content of magnesium high
Performance.
In the present invention, aluminium alloy strips refer to the banding aluminum alloy materials of the larger coiled supply of length-width ratio；To aluminium
The width and thickness of alloy strip steel rolled stock do not make strict limitation, can be the stock size of this area.
In ingot casting of the invention, the total content≤0.15wt% of the impurity；Additionally, every kind of impurity in the impurity
Content≤0.05wt%.The present invention does not make strict limitation to the specific composition of the impurity, for example, can be Cu, Cr, Zn etc..
In the present invention, Mg is the main intensified element of aluminium alloy strips, and its content range is：5.0wt% ＜ Mg≤
6.5wt%；It is further 5.2-5.9wt%；Further it is 5.4-5.8wt%；Preferably 5.6-5.7wt%.
In the present invention, the control of Mn contents can be overcome because Mg contents are in more than 5.0wt% in 0.18-0.25wt%
When the plasticity and processability problems brought；Further, the content range of Mn can be 0.20-0.25%.
Further, the content range of Si can be 0.08-0.1wt%；The content range of Fe can be 0.1-
0.15wt%.
Preferably, the composition of ingot casting of the invention is：Si：0.08-0.1wt%, Fe：0.1-0.15wt%, Mn：0.20-
0.25wt%, Mg：5.4-5.8wt%, balance of Al and inevitable impurity.The compositing range is conducive to making the aluminium of manufacture to close
Gold ribbon material combination property is more excellent.
In the present invention, the ingot casting can be manufactured using conventional method；For example, after can technical pure aluminium ingot be melted,
Pure magnesium ingot, aluminium manganese intermediate alloy, ferro-aluminum intermediate alloy, aluminium silicon intermediate alloy are added, founding system is carried out after melting purification, degasification
.Wherein, the condition of founding can be：Cast ingot dimension：560mm*1420mm*5200mm；Composition Composition Control dispensing on request；
735-750 DEG C of refining temperature；Casting speed 40-50mm/min, water-carrying capacity 200-220m3/ h, 665-690 DEG C of casting temperature.It is special
It is not that should control grain size when ingot casting is manufactured；Specifically, grain size≤2 grade can be controlled.
In the present invention, each element that all heat-treated is used to enable aluminum alloy in band fully dissolves, spreads, so as to be distributed
It is even；Specifically, the condition of soaking can be：440-500 DEG C of soaking temperature, soaking time 56-64h.The equal heat condition is conducive to β
It is mutually uniform to separate out.In one embodiment, equal thermal system is specifically as follows：When 500 DEG C of furnace gas constant temperature, 470 DEG C of material temperature, change constant temperature
480 DEG C, it is incubated 60h.
Further, ingot casting is heated before hot rolling.Heating condition can be：430-490 DEG C of heating-up temperature, plus
Hot time 5-7h.Specifically, can be heated under the following conditions：500 DEG C of furnace gas constant temperature, surveys metal temperature and reaches 460 DEG C, stove
Gas changes 480 DEG C of constant temperature, is incubated 6h, 450-480 DEG C of metal tapping temperature.
In the present invention, the condition of hot rolling can be：450-480 DEG C of start rolling temperature, 300 DEG C of finishing temperature ＞；Additionally, hot
Rolling finished product thickness can control in 6.0 ± 0.3mm.Above-mentioned hot-rolled condition is conducive to improving the processability of above-mentioned aluminium alloy strips
Energy.
Further, step 3) include：Hot rolled ingot casting is carried out successively first cold rolling, the first annealing, it is second cold rolling,
It is second annealing, the 3rd cold rolling.Manufacture method of the invention manufactures aluminium alloy strips using twice annealing process, so as to improve conjunction
Processing characteristics of the golden material under cold state, and reduce the probability of crackle and broken belt.
Further, the 3rd annealing (i.e. finished product additional heat-treatment) is also included after cold rolling the described 3rd；3rd annealing can
Think process annealing.3rd make annealing treatment cause aluminium alloy strips intensity, it is moulding obtain matched well, it can improve and stablize
The performance of aluminium alloy strips, while improving the resistance to corrosion of aluminium alloy strips, eliminates aluminium alloy strips institute in cold-rolled process
The internal stress of generation.
Specifically, first cold rolling the coils of hot rolled formed through above-mentioned hot rolling can be cold-rolled to 3.0mm or so.First annealing can
It is insulation annealing, condition can be：300-360 DEG C of annealing temperature, annealing time 1.5-2.5h；Specifically, the first annealing schedule
Can be：220 DEG C of constant temperature, keeps 4h, changes 450 DEG C of constant temperature, and 310 DEG C of metal temperature changes 350 DEG C of constant temperature, 330 DEG C of holdings of metal
2h.First annealing is conducive to improving the processing characteristics of material.
Second it is cold rolling can will through above-mentioned first annealing formed cold rolling coiled material be cold-rolled to 0.65-0.80mm.Second moves back
Fire condition can be：300-360 DEG C of annealing temperature, annealing time 1.5-2.5h.Second annealing is conducive to controlling the property of finished product
Energy.
3rd it is cold rolling can will through above-mentioned second annealing formed cold rolling coiled material be cold-rolled to target thickness, such as 0.5-
0.6mm.3rd annealing condition can be：120-180 DEG C of annealing temperature, annealing time 7.5-8.5h.
The present invention also provides a kind of aluminium alloy strips, is obtained according to any of the above-described described manufacture method.
Specifically, the composition of aluminium alloy strips is：Si：≤ 0.10wt%, Fe：≤ 0.2wt%, Mn：0.18-
0.25wt%, Mg：5.0-6.5wt%, balance of Al and inevitable impurity.
Further, in aluminium alloy strips impurity total content≤0.15wt%；Additionally, every kind of impurity in the impurity
Content≤0.05wt%.Specific composition to the impurity does not make strict limitation, for example, can be Cu, Cr, Zn etc..
In above-mentioned aluminium alloy strips, the content range of Mg is：5.0wt% ＜ Mg≤6.5wt%；It is further 5.2-
5.9wt%；Further it is 5.4-5.8wt%；Preferably 5.6-5.7wt%.The content range of Mn can be 0.20-
0.25%；The content range of Si can be 0.08-0.1wt%；The content range of Fe can be 0.1-0.15wt%.
Preferably, the composition of aluminium alloy strips is：Si：0.08-0.1wt%, Fe：0.1-0.15wt%, Mn：0.20-
0.25wt%, Mg：5.4-5.8wt%, balance of Al and inevitable impurity.The aluminium alloy strips of the compositing range are comprehensive
Can be more excellent.
Additionally, tensile strength >=the 360MPa of above-mentioned aluminium alloy strips；Yield strength >=280MPa；Elongation percentage >=8%；Firmly
Degree >=110.
Implementation of the invention, at least has the advantage that：
1st, manufacture method of the invention controls in optimum range the Mn contents in ingot casting, so as to overcome aluminum alloy materials
The problems such as plasticity reduction brought by more than 5.0wt% in Mg contents and process industrial art performance are deteriorated, improves magnesium high and contains
The processing characteristics of aluminum alloy materials during amount.
2nd, manufacture method of the invention manufactures aluminium alloy strips under specific finishing temperature, so that obtained aluminium alloy
The processing characteristics of band is improved significantly and improves.
3rd, manufacture method of the invention manufactures aluminium alloy strips using twice annealing process, enables aluminum alloy to band in cold state
Under processing characteristics improved, Plastic Forming performance meets cold working process needs, and the probability of crackle and broken belt is substantially reduced.
4th, manufacture method of the invention further uses finished product additional heat-treatment, so that the combination property of aluminium alloy strips
Intensity, it is moulding optimized, while eliminating the internal stress of cold-strip, improve the corrosion resistance of aluminium alloy strips.
Brief description of the drawings
Fig. 1 is the metallograph of aluminium alloy strips prepared by the embodiment of the present invention 1；
Fig. 2 is the metallograph of aluminium alloy strips prepared by reference examples of the present invention 1.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with embodiments of the invention, to this
Technical scheme in inventive embodiments is clearly and completely described, it is clear that described embodiment is that a part of the invention is real
Example is applied, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not making creation
Property work under the premise of the every other embodiment that is obtained, belong to the scope of protection of the invention.
Embodiment 1
The manufacture method of the aluminium alloy strips of the present embodiment, step is：
1st, ingot casting is manufactured
According to set component, after technical pure aluminium ingot is melted, add pure magnesium ingot, aluminium manganese intermediate alloy, ferro-aluminum intermediate alloy,
Aluminium silicon intermediate alloy, founding is carried out after melting purification, degasification, and the ingot casting of 560mm*1420mm*5200mm specifications is obtained；Wherein,
The composition of ingot casting is：Si：0.02wt%, Fe：0.2wt%, Mn：0.25wt%, Mg：5.2wt%, balance of Al and inevitable
Impurity.
During manufacture ingot casting, process control condition is：740 DEG C of refining temperature；Casting speed 45mm/min, water-carrying capacity 210m3/
H, 680 DEG C of casting temperature；Additionally, in manufacture ingot casting time control combinations granularity≤2 grade, can refer to GB/T 3246.2-2012 deformation aluminium
And the macrostructure method of inspection of part 2 is controlled in Al-alloy products histological test method.
2nd, soaking
Soaking is carried out to above-mentioned ingot casting；Equal thermal system is：When 500 DEG C of furnace gas constant temperature, 470 DEG C of material temperature, change 480 DEG C of constant temperature,
Insulation 60h.
After soaking by ingot casting sawing be size 560mm*1420mm*4900mm；Then carry out milling face, milling face mode：QX56:
530mm*1420mm*4900mm, wherein the upper and lower each milling 15mm in big face, the facet difference milling 10mm of side 3, make surface without cold shut,
The defect such as it is mingled with.
3rd, heat is pricked
Ingot casting behind above-mentioned milling face is heated, heating condition is：500 DEG C of furnace gas constant temperature, determines metal temperature and reaches
460 DEG C, furnace gas changes 480 DEG C of constant temperature, is incubated 6h, and metal tapping temperature is 450-480 DEG C.
Then, slab hot-rolling is made the coils of hot rolled that thickness is 6.0 ± 0.3mm；Hot bundle condition is：Hot roughing open rolling temperature
460 DEG C of degree, 300 DEG C of finishing temperature ＞.
4th, first cold rolling, the first annealing
Coils of hot rolled after being pricked to heat carries out first cold rolling, and the cold rolling coiled material that thickness is 3.0mm or so is obtained；First is cold rolling
Condition：Blooming pass；6.0-4.8-3.8-3.0；Band sleeve is batched.
Then, the first annealing is carried out to above-mentioned cold rolling coiled material；First annealing conditions：450 DEG C of constant temperature, 310 DEG C of metal temperature,
Change 350 DEG C of constant temperature, 330 DEG C of holding 2h of metal.
5th, second cold rolling, the second annealing
Cold rolling coiled material after being annealed to above-mentioned first carries out second cold rolling, the second cold rolling condition：3.0-2.1-1.52；With
Afterwards, re-reeler trimming, 1.52 ± 0.030*1380 ± 2；Band sleeve is batched；Face is examined during trimming；It is cold rolling again, cold rolling condition：
1.52-1.05-0.76±0.01。
Second annealing is carried out to the cold rolling coiled material through above-mentioned cold rolling formation；Second annealing conditions：Protected during 330 DEG C of metal temperature
Hold 2h.
6th, the 3rd cold rolling, the 3rd annealing
Cold rolling coiled material after being annealed to above-mentioned second carries out the 3rd cold rolling, the 3rd cold rolling condition：0.76-0.5 ± 0.01, rolls
Roller roughness Ra 0.3 (0.27-0.32)；Then, trimming is to 1310 ± 1mm of width.
3rd annealing is carried out to the cold rolling coiled material through above-mentioned treatment, aluminium alloy strips are obtained；3rd annealing conditions：150℃
Annealing 8h.
The composition of aluminium alloy strips manufactured by the above method is：Si：0.02wt%, Fe：0.2wt%, Mn：
0.25wt%, Mg：5.2wt%, balance of Al and inevitable impurity.
Fig. 1 is the metallograph of the aluminium alloy strips of above-mentioned preparation.Metallograph result shows：Its crystal grain is along longitudinal ovalize
(i.e. crystal grain ovalize, is elongated along longitudinal direction), without obvious longitudinal direction textured fibre tissue high, the aluminum alloy strip with the structure
Material has preferably moulding under conditions of high intensity is kept.
Additionally, using GB/T 228-2010 (metal material stretching test room temperature test method) method to aluminium alloy strips
Tensile strength (Rm), yield strength (Rp0.2) and elongation percentage (A50) detected；Using GB/T 4340.1-2009 to aluminium
The hardness (HV0.5) of alloy strip steel rolled stock detected, the results are shown in Table 1.
Embodiment 2
The manufacture method of the aluminium alloy strips of the present embodiment, step is：
1st, ingot casting is manufactured
According to set component, after technical pure aluminium ingot is melted, add pure magnesium ingot, aluminium manganese intermediate alloy, ferro-aluminum intermediate alloy,
Aluminium silicon intermediate alloy, founding is carried out after melting purification, degasification, and the ingot casting of 560mm*1420mm*5200mm specifications is obtained；Wherein,
The composition of ingot casting is：Si：0.10wt%, Fe：0.15wt%, Mn：0.23wt%, Mg：5.3wt%, balance of Al and can not keep away
The impurity exempted from.
During manufacture ingot casting, process control condition is：735 DEG C of refining temperature；Casting speed 40mm/min, water-carrying capacity 200m3/
H, 665 DEG C of casting temperature；Additionally, in manufacture ingot casting time control combinations granularity≤2 grade, can refer to GB/T 3246.2-2012 deformation aluminium
And the macrostructure method of inspection of part 2 is controlled in Al-alloy products histological test method.
2nd, soaking
Soaking is carried out to above-mentioned ingot casting；Equal thermal system is：When 500 DEG C of furnace gas constant temperature, 470 DEG C of material temperature, change 480 DEG C of constant temperature,
Insulation 60h.
After soaking by ingot casting sawing be size 560mm*1420mm*4900mm；Then carry out milling face, milling face mode：QX56:
530mm*1420mm*4900mm, wherein the upper and lower each milling 15mm in big face, the facet difference milling 10mm of side 3, make surface without cold shut,
The defect such as it is mingled with.
3rd, heat is pricked
Ingot casting behind above-mentioned milling face is heated, heating condition is：500 DEG C of furnace gas constant temperature, determines metal temperature and reaches
460 DEG C, furnace gas changes 480 DEG C of constant temperature, is incubated 6h, and metal tapping temperature is 450-480 DEG C.
Then, slab hot-rolling is made the coils of hot rolled that thickness is 6.0 ± 0.3mm；Hot bundle condition is：Hot roughing open rolling temperature
480 DEG C of degree, 300 DEG C of finishing temperature ＞.
4th, first cold rolling, the first annealing
Coils of hot rolled after being pricked to heat carries out first cold rolling, and the cold rolling coiled material that thickness is 3.0mm or so is obtained；First is cold rolling
Condition：Blooming pass；6.0-4.8-3.8-3.0；Band sleeve is batched.
Then, the first annealing is carried out to above-mentioned cold rolling coiled material；First annealing conditions：450 DEG C of constant temperature, 310 DEG C of metal temperature,
Change 350 DEG C of constant temperature, 320 DEG C of holding 2.5h of metal.
5th, second cold rolling, the second annealing
Cold rolling coiled material after being annealed to above-mentioned first carries out second cold rolling, the second cold rolling condition：3.0-2.1-1.52；With
Afterwards, re-reeler trimming, 1.52 ± 0.030*1380 ± 2；Band sleeve is batched；Face is examined during trimming；It is cold rolling again, cold rolling condition：
1.52-1.05-0.76±0.01。
Second annealing is carried out to the cold rolling coiled material through above-mentioned cold rolling formation；Second annealing conditions：Protected during 320 DEG C of metal temperature
Hold 2.5h.
6th, the 3rd cold rolling, the 3rd annealing
Cold rolling coiled material after being annealed to above-mentioned second carries out the 3rd cold rolling, the 3rd cold rolling condition：0.76-0.5 ± 0.01, rolls
Roller roughness Ra 0.3 (0.27-0.32)；Then, trimming is to 1310 ± 1mm of width.
3rd annealing is carried out to the cold rolling coiled material through above-mentioned treatment, aluminium alloy strips are obtained；3rd annealing conditions：180℃
Annealing 7.5h.
The composition of aluminium alloy strips manufactured by the above method is：Si：0.10wt%, Fe：0.15wt%, Mn：
0.23wt%, Mg：5.3wt%, balance of Al and inevitable impurity.
Internal structure to aluminium alloy strips is observed, and is as a result shown：The aluminium alloy strips have the aluminium with embodiment 1
The similar metallograph of alloy strip steel rolled stock.
Additionally, the performance test results of aluminium alloy strips are shown in Table 1.
Embodiment 3
The manufacture method of the aluminium alloy strips of the present embodiment, step is：
1st, ingot casting is manufactured
According to set component, after technical pure aluminium ingot is melted, add pure magnesium ingot, aluminium manganese intermediate alloy, ferro-aluminum intermediate alloy,
Aluminium silicon intermediate alloy, founding is carried out after melting purification, degasification, and the ingot casting of 560mm*1420mm*5200mm specifications is obtained；Wherein,
The composition of ingot casting is：Si：0.08wt%, Fe：0.1wt%, Mn：0.18wt%, Mg：5.4wt%, balance of Al and inevitable
Impurity.
During manufacture ingot casting, process control condition is：750 DEG C of refining temperature；Casting speed 50mm/min, water-carrying capacity 220m3/
H, 690 DEG C of casting temperature；Additionally, in manufacture ingot casting time control combinations granularity≤2 grade, can refer to GB/T 3246.2-2012 deformation aluminium
And the macrostructure method of inspection of part 2 is controlled in Al-alloy products histological test method.
2nd, soaking
Soaking is carried out to above-mentioned ingot casting；Equal thermal system is：When 500 DEG C of furnace gas constant temperature, 470 DEG C of material temperature, change 480 DEG C of constant temperature,
Insulation 60h.
After soaking by ingot casting sawing be size 560mm*1420mm*4900mm；Then carry out milling face, milling face mode：QX56:
530mm*1420mm*4900mm, wherein the upper and lower each milling 15mm in big face, the facet difference milling 10mm of side 3, make surface without cold shut,
The defect such as it is mingled with.
3rd, heat is pricked
Ingot casting behind above-mentioned milling face is heated, heating condition is：500 DEG C of furnace gas constant temperature, determines metal temperature and reaches
460 DEG C, furnace gas changes 480 DEG C of constant temperature, is incubated 6h, and metal tapping temperature is 450-480 DEG C.
Then, slab hot-rolling is made the coils of hot rolled that thickness is 6.0 ± 0.3mm；Hot bundle condition is：Hot roughing open rolling temperature
460 DEG C of degree, 300 DEG C of finishing temperature ＞.
4th, first cold rolling, the first annealing
Coils of hot rolled after being pricked to heat carries out first cold rolling, and the cold rolling coiled material that thickness is 3.0mm or so is obtained；First is cold rolling
Condition：Blooming pass；6.0-4.8-3.8-3.0；Band sleeve is batched.
Then, the first annealing is carried out to above-mentioned cold rolling coiled material；First annealing conditions：450 DEG C of constant temperature, 310 DEG C of metal temperature,
Change 380 DEG C of constant temperature, 360 DEG C of holding 1.5h of metal.
5th, second cold rolling, the second annealing
Cold rolling coiled material after being annealed to above-mentioned first carries out second cold rolling, the second cold rolling condition：3.0-2.1-1.52；With
Afterwards, re-reeler trimming, 1.52 ± 0.030*1380 ± 2；Band sleeve is batched；Face is examined during trimming；It is cold rolling again, cold rolling condition：
1.52-1.05-0.76±0.01。
Second annealing is carried out to the cold rolling coiled material through above-mentioned cold rolling formation；Second annealing conditions：Protected during 360 DEG C of metal temperature
Hold 1.5h.
6th, the 3rd cold rolling, the 3rd annealing
Cold rolling coiled material after being annealed to above-mentioned second carries out the 3rd cold rolling, the 3rd cold rolling condition：0.76-0.5 ± 0.01, rolls
Roller roughness Ra 0.3 (0.27-0.32)；Then, trimming is to 1310 ± 1mm of width.
3rd annealing is carried out to the cold rolling coiled material through above-mentioned treatment, aluminium alloy strips are obtained；3rd annealing conditions：165℃
Annealing 8h.
The composition of aluminium alloy strips manufactured by the above method is：Si：0.08wt%, Fe：0.1wt%, Mn：
0.18wt%, Mg：5.4wt%, balance of Al and inevitable impurity.
Internal structure to aluminium alloy strips is observed, and is as a result shown：The aluminium alloy strips have the aluminium with embodiment 1
The similar metallograph of alloy strip steel rolled stock.
Additionally, the performance test results of aluminium alloy strips are shown in Table 1.
Embodiment 4
The manufacture method of the aluminium alloy strips of the present embodiment, step is：
1st, ingot casting is manufactured
According to set component, after technical pure aluminium ingot is melted, add pure magnesium ingot, aluminium manganese intermediate alloy, ferro-aluminum intermediate alloy,
Aluminium silicon intermediate alloy, founding is carried out after melting purification, degasification, and the ingot casting of 560*1420 specifications is obtained；Wherein, the composition of ingot casting
For：Si：0.10wt%, Fe：0.15wt%, Mn：0.2 5wt%, Mg：5.5wt%, balance of Al and inevitable impurity.
During manufacture ingot casting, process control condition is：745 DEG C of refining temperature；Casting speed 40mm/min, water-carrying capacity 215m3/
H, 670 DEG C of casting temperature；Additionally, in manufacture ingot casting time control combinations granularity≤2 grade, can refer to GB/T 3246.2-2012 deformation aluminium
And the macrostructure method of inspection of part 2 is controlled in Al-alloy products histological test method.
2nd, soaking
Soaking is carried out to above-mentioned ingot casting；Equal thermal system is：When 500 DEG C of furnace gas constant temperature, 470 DEG C of material temperature, change 480 DEG C of constant temperature,
Insulation 60h.
After soaking by ingot casting sawing be size 560mm*1420mm*4900mm；Then carry out milling face, milling face mode：QX56:
530mm*1420mm*4900mm, wherein the upper and lower each milling 15mm in big face, the facet difference milling 10mm of side 3, make surface without cold shut,
The defect such as it is mingled with.
3rd, heat is pricked
Ingot casting behind above-mentioned milling face is heated, heating condition is：500 DEG C of furnace gas constant temperature, determines metal temperature and reaches
460 DEG C, furnace gas changes 480 DEG C of constant temperature, is incubated 6h, and metal tapping temperature is 450-480 DEG C.
Then, slab hot-rolling is made the coils of hot rolled that thickness is 6.0 ± 0.3mm；Hot bundle condition is：Hot roughing open rolling temperature
470 DEG C of degree, 300 DEG C of finishing temperature ＞.
4th, first cold rolling, the first annealing
Coils of hot rolled after being pricked to heat carries out first cold rolling, and the cold rolling coiled material that thickness is 3.0mm or so is obtained；First is cold rolling
Condition：Blooming pass；6.0-4.8-3.8-3.0；Band sleeve is batched.
Then, the first annealing is carried out to above-mentioned cold rolling coiled material；First annealing conditions：450 DEG C of constant temperature, 310 DEG C of metal temperature,
Change 340 DEG C of constant temperature, 320 DEG C of holding 2h of metal.
5th, second cold rolling, the second annealing
Cold rolling coiled material after being annealed to above-mentioned first carries out second cold rolling, the second cold rolling condition：3.0-2.1-1.52；With
Afterwards, re-reeler trimming, 1.52 ± 0.030*1380 ± 2；Band sleeve is batched；Face is examined during trimming；It is cold rolling again, cold rolling condition：
1.52-1.05-0.76±0.01。
Second annealing is carried out to the cold rolling coiled material through above-mentioned cold rolling formation；Second annealing conditions：Protected during 320 DEG C of metal temperature
Hold 2h.
6th, the 3rd cold rolling, the 3rd annealing
Cold rolling coiled material after being annealed to above-mentioned second carries out the 3rd cold rolling, the 3rd cold rolling condition：0.76-0.5 ± 0.01, rolls
Roller roughness Ra 0.3 (0.27-0.32)；Then, trimming is to 1310 ± 1mm of width.
3rd annealing is carried out to the cold rolling coiled material through above-mentioned treatment, aluminium alloy strips are obtained；3rd annealing conditions：120℃
Annealing 8.5h.
The composition of aluminium alloy strips manufactured by the above method is：Si：0.10wt%, Fe：0.15wt%, Mn：0.2
5wt%, Mg：5.5wt%, balance of Al and inevitable impurity.
Internal structure to aluminium alloy strips is observed, and is as a result shown：The aluminium alloy strips have the aluminium with embodiment 1
The similar metallograph of alloy strip steel rolled stock.
Additionally, the performance test results of aluminium alloy strips are shown in Table 1.
Embodiment 5
The manufacture method of the aluminium alloy strips of the present embodiment, step is：
1st, ingot casting is manufactured
According to set component, after technical pure aluminium ingot is melted, add pure magnesium ingot, aluminium manganese intermediate alloy, ferro-aluminum intermediate alloy,
Aluminium silicon intermediate alloy, founding is carried out after melting purification, degasification, and the ingot casting of 560*1420 specifications is obtained；Wherein, the composition of ingot casting
For：Si：0.10wt%, Fe：0.15wt%, Mn：0.2wt%, Mg：5.6wt%, balance of Al and inevitable impurity.
During manufacture ingot casting, process control condition is：740 DEG C of refining temperature；Casting speed 45mm/min, water-carrying capacity 210m3/
H, 680 DEG C of casting temperature；Additionally, in manufacture ingot casting time control combinations granularity≤2 grade, can refer to GB/T 3246.2-2012 deformation aluminium
And the macrostructure method of inspection of part 2 is controlled in Al-alloy products histological test method.
2nd, soaking
Soaking is carried out to above-mentioned ingot casting；Equal thermal system is：When 500 DEG C of furnace gas constant temperature, 470 DEG C of material temperature, change 480 DEG C of constant temperature,
Insulation 60h.
After soaking by ingot casting sawing be size 560mm*1420mm*4900mm；Then carry out milling face, milling face mode：QX56:
530mm*1420mm*4900mm, wherein the upper and lower each milling 15mm in big face, the facet difference milling 10mm of side 3, make surface without cold shut,
The defect such as it is mingled with.
3rd, heat is pricked
Ingot casting behind above-mentioned milling face is heated, heating condition is：500 DEG C of furnace gas constant temperature, determines metal temperature and reaches
460 DEG C, furnace gas changes 480 DEG C of constant temperature, is incubated 6h, and metal tapping temperature is 450-480 DEG C.
Then, slab hot-rolling is made the coils of hot rolled that thickness is 6.0 ± 0.3mm；Hot bundle condition is：Hot roughing open rolling temperature
465 DEG C of degree, 300 DEG C of finishing temperature ＞.
4th, first cold rolling, the first annealing
Coils of hot rolled after being pricked to heat carries out first cold rolling, and the cold rolling coiled material that thickness is 3.0mm or so is obtained；First is cold rolling
Condition：Blooming pass；6.0-4.8-3.8-3.0；Band sleeve is batched.
Then, the first annealing is carried out to above-mentioned cold rolling coiled material；First annealing conditions：Constant temperature 450,310 DEG C of metal temperature, changes
350 DEG C of constant temperature, 330 DEG C of holding 2h of metal.
5th, second cold rolling, the second annealing
Cold rolling coiled material after being annealed to above-mentioned first carries out second cold rolling, the second cold rolling condition：3.0-2.1-1.52；With
Afterwards, re-reeler trimming, 1.52 ± 0.030*1380 ± 2；Band sleeve is batched；Face is examined during trimming；It is cold rolling again, cold rolling condition：
1.52-1.05-0.76±0.01。
Second annealing is carried out to the cold rolling coiled material through above-mentioned cold rolling formation；Second annealing conditions：Protected during 330 DEG C of metal temperature
Hold 2h.
6th, the 3rd cold rolling, the 3rd annealing
Cold rolling coiled material after being annealed to above-mentioned second carries out the 3rd cold rolling, the 3rd cold rolling condition：0.76-0.5 ± 0.01, rolls
Roller roughness Ra 0.3 (0.27-0.32)；Then, trimming is to 1310 ± 1mm of width.
3rd annealing is carried out to the cold rolling coiled material through above-mentioned treatment, aluminium alloy strips are obtained；3rd annealing conditions：150℃
Annealing 8h.
The composition of aluminium alloy strips manufactured by the above method is：Si：0.10wt%, Fe：0.15wt%, Mn：
0.2wt%, Mg：5.6wt%, balance of Al and inevitable impurity.
Internal structure to aluminium alloy strips is observed, and is as a result shown：The aluminium alloy strips have the aluminium with embodiment 1
The similar metallograph of alloy strip steel rolled stock.
Additionally, the performance test results of aluminium alloy strips are shown in Table 1.
Embodiment 6
The manufacture method of the aluminium alloy strips of the present embodiment, step is：
1st, ingot casting is manufactured
According to set component, after technical pure aluminium ingot is melted, add pure magnesium ingot, aluminium manganese intermediate alloy, ferro-aluminum intermediate alloy,
Aluminium silicon intermediate alloy, founding is carried out after melting purification, degasification, and the ingot casting of 560*1420 specifications is obtained；Wherein, the composition of ingot casting
For：Si：0.08wt%, Fe：0.1wt%, Mn：0.23wt%, Mg：5.7wt%, balance of Al and inevitable impurity.
During manufacture ingot casting, process control condition is：740 DEG C of refining temperature；Casting speed 40mm/min, water-carrying capacity 200m3/
H, 675 DEG C of casting temperature；Additionally, in manufacture ingot casting time control combinations granularity≤2 grade, can refer to GB/T 3246.2-2012 deformation aluminium
And the macrostructure method of inspection of part 2 is controlled in Al-alloy products histological test method.
2nd, soaking
Soaking is carried out to above-mentioned ingot casting；Equal thermal system is：When 500 DEG C of furnace gas constant temperature, 470 DEG C of material temperature, change 480 DEG C of constant temperature,
Insulation 60h.
After soaking by ingot casting sawing be size 560mm*1420mm*4900mm；Then carry out milling face, milling face mode：QX56:
530mm*1420mm*4900mm, wherein the upper and lower each milling 15mm in big face, the facet difference milling 10mm of side 3, make surface without cold shut,
The defect such as it is mingled with.
3rd, heat is pricked
Ingot casting behind above-mentioned milling face is heated, heating condition is：500 DEG C of furnace gas constant temperature, determines metal temperature and reaches
460 DEG C, furnace gas changes 480 DEG C of constant temperature, is incubated 6h, and metal tapping temperature is 450-480 DEG C.
Then, slab hot-rolling is made the coils of hot rolled that thickness is 6.0 ± 0.3mm；Hot bundle condition is：Hot roughing open rolling temperature
470 DEG C of degree, 300 DEG C of finishing temperature ＞.
4th, first cold rolling, the first annealing
Coils of hot rolled after being pricked to heat carries out first cold rolling, and the cold rolling coiled material that thickness is 3.0mm or so is obtained；First is cold rolling
Condition：Blooming pass；6.0-4.8-3.8-3.0；Band sleeve is batched.
Then, the first annealing is carried out to above-mentioned cold rolling coiled material；First annealing conditions：450 DEG C of constant temperature, 310 DEG C of metal temperature,
Change 350 DEG C of constant temperature, 320 DEG C of holding 2.5h of metal.
5th, second cold rolling, the second annealing
Cold rolling coiled material after being annealed to above-mentioned first carries out second cold rolling, the second cold rolling condition：3.0-2.1-1.52；With
Afterwards, re-reeler trimming, 1.52 ± 0.030*1380 ± 2；Band sleeve is batched；Face is examined during trimming；It is cold rolling again, cold rolling condition：
1.52-1.05-0.76±0.01。
Second annealing is carried out to the cold rolling coiled material through above-mentioned cold rolling formation；Second annealing conditions：Protected during 320 DEG C of metal temperature
Hold 2.5h.
6th, the 3rd cold rolling, the 3rd annealing
Cold rolling coiled material after being annealed to above-mentioned second carries out the 3rd cold rolling, the 3rd cold rolling condition：0.76-0.5 ± 0.01, rolls
Roller roughness Ra 0.3 (0.27-0.32)；Then, trimming is to 1310 ± 1mm of width.
3rd annealing is carried out to the cold rolling coiled material through above-mentioned treatment, aluminium alloy strips are obtained；3rd annealing conditions：180℃
Annealing 7.5h.
The composition of aluminium alloy strips manufactured by the above method is：Si：0.08wt%, Fe：0.1wt%, Mn：
0.23wt%, Mg：5.7wt%, balance of Al and inevitable impurity.
Internal structure to aluminium alloy strips is observed, and is as a result shown：The aluminium alloy strips have the aluminium with embodiment 1
The similar metallograph of alloy strip steel rolled stock.
Additionally, the performance test results of aluminium alloy strips are shown in Table 1.
Embodiment 7
The manufacture method of the aluminium alloy strips of the present embodiment, step is：
1st, ingot casting is manufactured
According to set component, after technical pure aluminium ingot is melted, add pure magnesium ingot, aluminium manganese intermediate alloy, ferro-aluminum intermediate alloy,
Aluminium silicon intermediate alloy, founding is carried out after melting purification, degasification, and the ingot casting of 560*1420 specifications is obtained；Wherein, the composition of ingot casting
For：Si：0.10wt%, Fe：0.2wt%, Mn：0.18wt%, Mg：5.8wt%, balance of Al and inevitable impurity.
During manufacture ingot casting, process control condition is：740 DEG C of refining temperature；Casting speed 45mm/min, water-carrying capacity 210m3/
H, 680 DEG C of casting temperature；Additionally, in manufacture ingot casting time control combinations granularity≤2 grade, can refer to GB/T 3246.2-2012 deformation aluminium
And the macrostructure method of inspection of part 2 is controlled in Al-alloy products histological test method.
2nd, soaking
Soaking is carried out to above-mentioned ingot casting；Equal thermal system is：When 500 DEG C of furnace gas constant temperature, 470 DEG C of material temperature, change 480 DEG C of constant temperature,
Insulation 60h.
After soaking by ingot casting sawing be size 560mm*1420mm*4900mm；Then carry out milling face, milling face mode：QX56:
530mm*1420mm*4900mm, wherein the upper and lower each milling 15mm in big face, the facet difference milling 10mm of side 3, make surface without cold shut,
The defect such as it is mingled with.
3rd, heat is pricked
Ingot casting behind above-mentioned milling face is heated, heating condition is：500 DEG C of furnace gas constant temperature, determines metal temperature and reaches
460 DEG C, furnace gas changes 480 DEG C of constant temperature, is incubated 6h, and metal tapping temperature is 450-480 DEG C.
Then, slab hot-rolling is made the coils of hot rolled that thickness is 6.0 ± 0.3mm；Hot bundle condition is：Hot roughing open rolling temperature
460 DEG C of degree, 300 DEG C of finishing temperature ＞.
4th, first cold rolling, the first annealing
Coils of hot rolled after being pricked to heat carries out first cold rolling, and the cold rolling coiled material that thickness is 3.0mm or so is obtained；First is cold rolling
Condition：Blooming pass；6.0-4.8-3.8-3.0；Band sleeve is batched.
Then, the first annealing is carried out to above-mentioned cold rolling coiled material；First annealing conditions：Constant temperature 450,310 DEG C of metal temperature, changes
350 DEG C of constant temperature, 330 DEG C of holding 2h of metal.
5th, second cold rolling, the second annealing
Cold rolling coiled material after being annealed to above-mentioned first carries out second cold rolling, the second cold rolling condition：3.0-2.1-1.52；With
Afterwards, re-reeler trimming, 1.52 ± 0.030*1380 ± 2；Band sleeve is batched；Face is examined during trimming；It is cold rolling again, cold rolling condition：
1.52-1.05-0.76±0.01。
Second annealing is carried out to the cold rolling coiled material through above-mentioned cold rolling formation；Second annealing conditions：Protected during 330 DEG C of metal temperature
Hold 2h.
6th, the 3rd cold rolling, the 3rd annealing
Cold rolling coiled material after being annealed to above-mentioned second carries out the 3rd cold rolling, the 3rd cold rolling condition：0.76-0.5 ± 0.01, rolls
Roller roughness Ra 0.3 (0.27-0.32)；Then, trimming is to 1310 ± 1mm of width.
3rd annealing is carried out to the cold rolling coiled material through above-mentioned treatment, aluminium alloy strips are obtained；3rd annealing conditions：150℃
Annealing 8h.
The composition of aluminium alloy strips manufactured by the above method is：Si：0.10wt%, Fe：0.2wt%, Mn：
0.18wt%, Mg：5.8wt%, balance of Al and inevitable impurity.
Internal structure to aluminium alloy strips is observed, and is as a result shown：The aluminium alloy strips have the aluminium with embodiment 1
The similar metallograph of alloy strip steel rolled stock.
Additionally, the performance test results of aluminium alloy strips are shown in Table 1.
Embodiment 8
The manufacture method of the aluminium alloy strips of the present embodiment, step is：
1st, ingot casting is manufactured
According to set component, after technical pure aluminium ingot is melted, add pure magnesium ingot, aluminium manganese intermediate alloy, ferro-aluminum intermediate alloy,
Aluminium silicon intermediate alloy, founding is carried out after melting purification, degasification, and the ingot casting of 560*1420 specifications is obtained；Wherein, the composition of ingot casting
For：Si：0.10wt%, Fe：0.2wt%, Mn：0.25wt%, Mg：5.9wt%, balance of Al and inevitable impurity.
During manufacture ingot casting, process control condition is：750 DEG C of refining temperature；Casting speed 50mm/min, water-carrying capacity 220m3/
H, 690 DEG C of casting temperature；Additionally, in manufacture ingot casting time control combinations granularity≤2 grade, can refer to GB/T 3246.2-2012 deformation aluminium
And the macrostructure method of inspection of part 2 is controlled in Al-alloy products histological test method.
2nd, soaking
Soaking is carried out to above-mentioned ingot casting；Equal thermal system is：When 500 DEG C of furnace gas constant temperature, 470 DEG C of material temperature, change 480 DEG C of constant temperature,
Insulation 60h.
After soaking by ingot casting sawing be size 560mm*1420mm*4900mm；Then carry out milling face, milling face mode：QX56:
530mm*1420mm*4900mm, wherein the upper and lower each milling 15mm in big face, the facet difference milling 10mm of side 3, make surface without cold shut,
The defect such as it is mingled with.
3rd, heat is pricked
Ingot casting behind above-mentioned milling face is heated, heating condition is：500 DEG C of furnace gas constant temperature, determines metal temperature and reaches
460 DEG C, furnace gas changes 480 DEG C of constant temperature, is incubated 6h, and metal tapping temperature is 450-480 DEG C.
Then, slab hot-rolling is made the coils of hot rolled that thickness is 6.0 ± 0.3mm；Hot bundle condition is：Hot roughing open rolling temperature
460 DEG C of degree, 300 DEG C of finishing temperature ＞.
4th, first cold rolling, the first annealing
Coils of hot rolled after being pricked to heat carries out first cold rolling, and the cold rolling coiled material that thickness is 3.0mm or so is obtained；First is cold rolling
Condition：Blooming pass；6.0-4.8-3.8-3.0；Band sleeve is batched.
Then, the first annealing is carried out to above-mentioned cold rolling coiled material；First annealing conditions：450 DEG C of constant temperature, 310 DEG C of metal temperature,
Change 380 DEG C of constant temperature, 360 DEG C of holding 1.5h of metal.
5th, second cold rolling, the second annealing
Cold rolling coiled material after being annealed to above-mentioned first carries out second cold rolling, the second cold rolling condition：3.0-2.1-1.52；With
Afterwards, re-reeler trimming, 1.52 ± 0.030*1380 ± 2；Band sleeve is batched；Face is examined during trimming；It is cold rolling again, cold rolling condition：
1.52-1.05-0.76±0.01。
Second annealing is carried out to the cold rolling coiled material through above-mentioned cold rolling formation；Second annealing conditions：Protected during 360 DEG C of metal temperature
Hold 1.5h.
6th, the 3rd cold rolling, the 3rd annealing
Cold rolling coiled material after being annealed to above-mentioned second carries out the 3rd cold rolling, the 3rd cold rolling condition：0.76-0.5 ± 0.01, rolls
Roller roughness Ra 0.3 (0.27-0.32)；Then, trimming is to 1310 ± 1mm of width.
3rd annealing is carried out to the cold rolling coiled material through above-mentioned treatment, aluminium alloy strips are obtained；3rd annealing conditions：165℃
Annealing 8h.
The composition of aluminium alloy strips manufactured by the above method is：Si：0.10wt%, Fe：0.2wt%, Mn：
0.25wt%, Mg：5.9wt%, balance of Al and inevitable impurity.
Internal structure to aluminium alloy strips is observed, and is as a result shown：The aluminium alloy strips have the aluminium with embodiment 1
The similar metallograph of alloy strip steel rolled stock.
Additionally, the performance test results of aluminium alloy strips are shown in Table 1.
Embodiment 9
The manufacture method of the aluminium alloy strips of the present embodiment, step is：
1st, ingot casting is manufactured
According to set component, after technical pure aluminium ingot is melted, add pure magnesium ingot, aluminium manganese intermediate alloy, ferro-aluminum intermediate alloy,
Aluminium silicon intermediate alloy, founding is carried out after melting purification, degasification, and the ingot casting of 560mm*1420mm*5200mm specifications is obtained；Wherein,
The composition of ingot casting is：Si：0.02wt%, Fe：0.2wt%, Mn：0.25wt%, Mg：5.2wt%, balance of Al and inevitable
Impurity.
During manufacture ingot casting, process control condition is：740 DEG C of refining temperature；Casting speed 45mm/min, water-carrying capacity 210m3/
H, 680 DEG C of casting temperature；Additionally, in manufacture ingot casting time control combinations granularity≤2 grade, can refer to GB/T 3246.2-2012 deformation aluminium
And the macrostructure method of inspection of part 2 is controlled in Al-alloy products histological test method.
2nd, soaking
Soaking is carried out to above-mentioned ingot casting；Equal thermal system is：When 500 DEG C of furnace gas constant temperature, 470 DEG C of material temperature, change 480 DEG C of constant temperature,
Insulation 60h.
After soaking by ingot casting sawing be size 560mm*1420mm*4900mm；Then carry out milling face, milling face mode：QX56:
530mm*1420mm*4900mm, wherein the upper and lower each milling 15mm in big face, the facet difference milling 10mm of side 3, make surface without cold shut,
The defect such as it is mingled with.
3rd, heat is pricked
Ingot casting behind above-mentioned milling face is heated, heating condition is：500 DEG C of furnace gas constant temperature, determines metal temperature and reaches
460 DEG C, furnace gas changes 480 DEG C of constant temperature, is incubated 6h, and metal tapping temperature is 450-480 DEG C.
Then, slab hot-rolling is made the coils of hot rolled that thickness is 6.0 ± 0.3mm；Hot bundle condition is：Hot roughing open rolling temperature
460 DEG C of degree, 300 DEG C of finishing temperature ＞.
4th, first cold rolling, the first annealing
Coils of hot rolled after being pricked to heat carries out first cold rolling, and the cold rolling coiled material that thickness is 3.0mm or so is obtained；First is cold rolling
Condition：Blooming pass；6.0-4.8-3.8-3.0；Band sleeve is batched.
Then, the first annealing is carried out to above-mentioned cold rolling coiled material；First annealing conditions：450 DEG C of constant temperature, 310 DEG C of metal temperature,
Change 350 DEG C of constant temperature, 330 DEG C of holding 2h of metal.
5th, second cold rolling, the second annealing
Cold rolling coiled material after being annealed to above-mentioned first carries out second cold rolling, the second cold rolling condition：3.0-2.1-1.52；With
Afterwards, re-reeler trimming, 1.52 ± 0.030*1380 ± 2；Band sleeve is batched；Face is examined during trimming；It is cold rolling again, cold rolling condition：
1.52-1.05-0.76±0.01。
Second annealing is carried out to the cold rolling coiled material through above-mentioned cold rolling formation；Second annealing conditions：Protected during 330 DEG C of metal temperature
Hold 2h.
6th, the 3rd cold rolling, the 3rd annealing
Cold rolling coiled material after being annealed to above-mentioned second carries out the 3rd cold rolling, the 3rd cold rolling condition：0.76-0.5 ± 0.01, rolls
Roller roughness Ra 0.3 (0.27-0.32)；Then, trimming is to 1310 ± 1mm of width.
3rd annealing is carried out to the cold rolling coiled material through above-mentioned treatment, aluminium alloy strips are obtained；3rd annealing conditions：150℃
Annealing 8h.
The chemical composition of aluminium alloy strips is analyzed using ICP OES, its chemical composition is：Si：0.02wt%,
Fe：0.2wt%, Mn：0.25wt%, Mg：6.17wt%, Cu：0.02wt%, Cr：0.02wt%, Zn：0.04wt%, Ti：
0.03wt%, balance of Al and other inevitable impurity.
Internal structure to aluminium alloy strips is observed, and is as a result shown：The aluminium alloy strips have the aluminium with embodiment 1
The similar metallograph of alloy strip steel rolled stock.
Additionally, the performance test results of aluminium alloy strips are shown in Table 1.
Reference examples 1
5182 alloys that this reference examples is manufactured in conventional manner as control, consisting of：Si：0.10wt%, Fe：
0.2wt%, Mn：0.3wt%, Mg：4.8wt%, balance of Al and inevitable impurity.
Fig. 2 is the metallograph of 5182 alloys.Metallograph result shows：Its crystal grain is in strip, is become with obvious longitudinal direction
Shape bacillar structure, the working hardening of deflection high.
Additionally, the performance test results of the aluminium alloy strips of this reference examples are shown in Table 1.
Reference examples 2
The manufacture method of the aluminium alloy strips of this reference examples, except the Mn contents in ingot casting are 0.3wt%, Mg contents are
5.0wt%, remaining is same as Example 1.The performance test results of the aluminium alloy strips of manufacture are shown in Table 1.
The performance test results of each aluminium alloy strips of table 1
Finally it should be noted that：Various embodiments above is merely illustrative of the technical solution of the present invention, rather than its limitations；To the greatest extent
Pipe has been described in detail with reference to foregoing embodiments to the present invention, it will be understood by those within the art that：Its according to
The technical scheme described in foregoing embodiments can so be modified, or which part or all technical characteristic are entered
Row equivalent；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the present invention technology
The scope of scheme.
Claims (10)
1. a kind of manufacture method of aluminium alloy strips, it is characterised in that comprise the following steps：
1) all heat-treated is carried out to ingot casting；
2) hot rolling is carried out to the ingot casting through all heat-treated；
3) cold rolling and annealing is carried out to hot rolled ingot casting；
Wherein, the composition of the ingot casting is：
Si：≤ 0.10wt%, Fe：≤ 0.2wt%, Mn：0.18-0.25wt%, Mg：5.0-6.5wt%, balance of Al and can not
The impurity for avoiding.
2. manufacture method according to claim 1, it is characterised in that the total content≤0.15wt% of the impurity.
3. manufacture method according to claim 1 and 2, it is characterised in that the content of every kind of impurity in the impurity≤
0.05wt%.
4. according to any described manufacture method of claims 1 to 3, it is characterised in that the start rolling temperature of the hot rolling is 450-
480 DEG C, 300 DEG C of finishing temperature ＞.
5. according to any described manufacture method of Claims 1-4, it is characterised in that step 3) include：To hot rolled ingot casting
First cold rolling, the first annealing, second cold rolling, the second annealing, the 3rd cold rolling is carried out successively.
6. manufacture method according to claim 5, it is characterised in that carry out the 3rd annealing after cold rolling the described 3rd.
7. the manufacture method according to claim 5 or 6, it is characterised in that the condition of first annealing is：Annealing temperature
300-360 DEG C, annealing time 1.5-2.5h.
8. according to any described manufacture method of claim 5 to 7, it is characterised in that the condition of the 3rd annealing is：Annealing
120-180 DEG C of temperature, annealing time 7.5-8.5h.
9. a kind of aluminium alloy strips, it is characterised in that be obtained according to any described manufacture method of claim 1 to 8.
10. aluminium alloy strips according to claim 9, it is characterised in that its tensile strength >=360MPa；Yield strength >=
280MPa；Elongation percentage >=8%.
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| CN109022954A (en) * | 2018-09-14 | 2018-12-18 | 东北轻合金有限责任公司 | A kind of aluminium alloy strips and its manufacturing method of spiral welded pipe |
| CN114480928A (en) * | 2022-01-28 | 2022-05-13 | 全良金属(苏州)有限公司 | High-strength aluminum plate for electronic product and manufacturing method thereof |
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| CN106834826B (en) | 2018-07-03 |
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