CN106756315A - A kind of aluminum alloy plate materials preparation method - Google Patents
A kind of aluminum alloy plate materials preparation method Download PDFInfo
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- CN106756315A CN106756315A CN201611064438.1A CN201611064438A CN106756315A CN 106756315 A CN106756315 A CN 106756315A CN 201611064438 A CN201611064438 A CN 201611064438A CN 106756315 A CN106756315 A CN 106756315A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/06—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
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/06—Alloys based on aluminium with magnesium as the next major constituent
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- 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
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Abstract
The invention discloses a kind of aluminum alloy plate materials preparation method, casting ingot casting, hot rolling, cold rolling, aligning and the step such as cutting plate and annealing are included.In ingot casting stage is cast, the present invention proposes distinctive aluminium alloy component, and has carried out distinctive technique preparation around the ranges of components in subsequent process steps.Compared with traditional high Mg-Al alloy plate production decision, the high-performance aluminum alloy sheet of present invention process production, on the premise of ensureing that tensile strength is qualified, significantly lift elongation percentage value, material is set to meet oil truck tank body wall thickness reduction design requirement, reduce different batches between material mechanical performance index especially elongation percentage value fluctuation range and reduce different batches wide plate between and wide cut and regular width sheet material between mechanical performance index especially elongation percentage value fluctuation range, meet ADR（Road in Europe hazardous materials transportation agreement）With automobile industry quality requirement.
Description
Technical field
The present invention relates to technical field of aluminium alloy preparation, more particularly to a kind of aluminum alloy plate materials preparation method.
Background technology
The application of aluminum alloy materials is the light-weighted important method of oil truck, and aluminium alloy oil truck weight is light than cylinder of steel car
About 30%.According to ADR（Autorisation Dangerous Road, road in Europe hazardous materials transportation agreement）Standard, oil truck
The design of tank body wall thickness is related to Tensile strength and elongation percentage product.Generally its tensile strength of same alloy material and
Elongation percentage has shifting rule, and the raising of elongation percentage reduces tank body for improving tensile strength and elongation percentage product
The contribution of wall thickness is bigger.
The main moulding process of current tank truck pot body closing end is bulging and spinning, higher to sheet material mechanical property requirements,
Need low yield strength ratio（Yield strength ratio tensile strength）And high-elongation, yield tensile ratio is high will to be increased bulging difficulty and easily produce
Raw " bulge ", elongation percentage is low, is possible to be cracked in spinning process.Usually can after hot rolling in traditional processing technology route
Finished products are carried out, annealing way is typically annealed using van-type stove rolling, by 5083 aluminium alloy yield tensile ratios after full annealing
Generally 0.56 ~ 0.67, elongation percentage is generally 19 ~ 25%, and 5182 aluminium alloy yield tensile ratios of same process condition production are generally
0.54 ~ 0.63, elongation percentage is generally 24 ~ 27%, there is the higher height of yield tensile ratio, the characteristics of elongation percentage is relatively low.Cause 5083/5182
Aluminium alloy yield strength is higher, may be still to there is a small amount of Deformation structure to fail to complete inside material structure the reason for elongation percentage is relatively low
Recrystallization, dislocation motion is rised in value caused by non-uniform temperature produces thermal stress in material cooling procedure.Traditional van-type stove rolling is moved back
During fire, coiled material programming rate is slower, and the movement of low temperature period organization internal atom consumes part energy storage and nucleus is reduced, material
Recrystallization temperature lifting, even if extension soaking time, still there is a small amount of tissue to fail to complete recrystallization.Dislocation density is strong surrender
The important factor in order of degree, certain dislocation density is remained in the tissue for not completing recrystallization, adds inhomogeneous cooling process
In increase newly dislocation, raise the yield strength of material.
In the case where tensile strength is higher, the elongation percentage value of existing aluminium alloy is relatively low, although meet GB but not
Europe superscript requirement can be reached；Secondly, elongation percentage value larger, the stability of fluctuation between different batches, different in width aluminum alloy plate materials
Also it is poor.
The content of the invention
Not enough for more than, the present invention provides a kind of aluminum alloy plate materials preparation method, can ensure that tensile strength is qualified
On the premise of, significantly lift the fluctuation of material mechanical performance index especially elongation percentage value between elongation percentage value, diminution different batches
Mechanical performance index especially extends between scope, and diminution different batches wide plate and between wide cut and regular width sheet material
The fluctuation range of rate value.
To reach above-mentioned purpose, the present invention is adopted the following technical scheme that：
A kind of aluminum alloy plate materials preparation method, it is characterised in that include following steps：
（One）Casting ingot casting：Cast aluminium alloy gold ingot casting, component and weight for casting the aluminium alloy melt of the aluminium alloy cast ingot
Measuring percentage is：Mg：4.5 ~ 5.5%, Mn：0.2 ~ 0.8%, Si：≤ 0.3%, Cr：≤ 0.2%, Cu：≤ 0.1%, Fe：≤ 0.3%,
Zn：≤ 0.2%, Ti：≤ 0.1%, Na：≤ 0.0003%, remaining is Al and inevitable impurity element；It is molten to the aluminium alloy
After body carries out two grades of degasification, the treatment of three-level slag removal and purification, the aluminium alloy cast ingot, institute are cast using heat top semicontinuous casting technique
State 1500 ~ 2650mm of aluminium alloy cast ingot width；
（Two）Hot rolling：The aluminium alloy cast ingot is preheated, the coiled base of hot rolling, the end of hot rolling after the aluminium alloy cast ingot preheating
Temperature is rolled for 260 ~ 360 DEG C, and the thickness of the volume base is reserved with the reserved thickness of 5 ~ 50% cold processing ratio；
（Three）It is cold rolling：The volume base is carried out cold rolling, is cold-rolled to finished product thickness, it is cold rolling after obtain cold rolling coil；
（Four）Aligning and cutting plate：By the cold rolling coil it is crosscutting be sheet material, it is crosscutting before through over cleaning and aligning operation；
（Five）Annealing：Full annealing is carried out using continuous quick plate-sheet-type annealing or the annealing of straight sheet pile formula, annealing temperature is 300 ~ 400
DEG C, soaking time is 15min ~ 5h, and high Mg-Al alloy plate is obtained after annealing.
Further, step（One）After casting ingot casting, also including excision head will be carried out after the aluminium alloy cast ingot soaking
The step of tail and milling face.
Further, the component and percentage by weight of the aluminium alloy melt of aluminium alloy cast ingot are：Mg：4.8 ~ 5.2%, Mn：
0.2 ~ 0.8%, Si：≤ 0.3%, Cr：≤ 0.2%, Cu：≤ 0.1%, Fe：≤ 0.3%, Zn：≤ 0.2%, Ti：≤ 0.1%, Na：≤
0.0003%, remaining is Al and inevitable impurity element.
Further, step（Two）In hot rolling, the finishing temperature of the hot rolling is 300 ~ 350 DEG C.
Further, step（Three）In cold rolling, the finished product thickness is 4 ~ 10mm.
Magnesium be 5000 be alloy essential element, with the increase of content of magnesium, alloy yield strength gradually rises, content of magnesium
For 0 ~ 1% when alloy elongation percentage with content of magnesium raise and decline rapidly, content of magnesium be more than 1% when changes of contents to alloy elongation percentage shadow
Sound is smaller.High-magnesium aluminum alloy prepared by the present invention, when magnesium element content is more than 3%, can separate out Al during room temperature8Mg5Balance phase, it is uncomfortable
In high temperature environments, this can be in mutually continuous net-shaped precipitation along crystal boundary, produce intercrystalline corrosion to open for the heat treatment of conjunction or for a long time exposure
Split.But in suitable heat treatment or when avoiding prolonged exposure to hot environment, the aluminium alloy of content of magnesium more than 4.0 ~ 5.5% resists
The combination properties such as tensile strength, formability are close to steel plate, and excellent corrosion resistance.High-magnesium aluminum alloy prepared by the present invention, magnesium elements
Content is more than 4.5%, in the case where preparation technology proposed by the present invention is coordinated, can obtain the good high-magnesium aluminum alloy of performance.
The addition of manganese element can be with improve alloy strength, crystal grain thinning tissue, and the appropriate manganese element content that increases can make conjunction
Golden intensity is almost unchanged within the temperature range of 60 ~ 120 DEG C, and has than other almags in the range of 60 ~ 170 DEG C
More preferable corrosion resistance, but the excessive manganese element of increase can produce thick hard crisp intermetallic compound with chromium, iron or titanium.The present invention
The aluminium alloy of proposition controls the content of manganese alloy, to avoid producing thick hard crisp intermetallic compound.
Sodium element is the impurity element in almag, although its mass fraction seldom, can increase melt viscosity, makes casting
Make and crack, can also increase alloy red brittleness, it is cracking when making slab hot-rolling.Sodium in aluminum alloy element proposed by the present invention
Content is controlled in 3ppm（3 parts per million, 3/1000000ths）Hereinafter, founding especially hot-rolled process finished product can be increased
Rate.
Continuous quick plate-sheet-type annealing can realize that the annealing of straight sheet pile formula can be realized using van-type stove using roller bottom stove.Plate-sheet-type
Compared with rolling is annealed, the heating rate speed rule of material is faster than straight sheet pile formula, straight sheet pile formula for plate-sheet-type for annealing, the annealing of straight sheet pile formula
Rolling is faster than, the excellent rule of cooling procedure material homogeneity is that plate-sheet-type is better than straight sheet pile formula, and straight sheet pile formula is better than rolling.
Compared with prior art, the beneficial effects of the invention are as follows：The present invention proposes a kind of aluminum alloy plate materials preparation method,
Include casting ingot casting, hot rolling, cold rolling, cleaning, aligning and the step such as cutting plate and annealing.In ingot casting stage is cast, this hair
It is bright to propose distinctive aluminium alloy component, and carried out distinctive technique system around the ranges of components in subsequent process steps
It is standby.Compared with traditional high Mg-Al alloy plate production decision, the high-performance aluminum alloy sheet of present invention process production is ensureing anti-
On the premise of tensile strength is qualified, elongation percentage value is significantly lifted, elongation percentage is higher than 27%, material is met oil truck tank body wall thickness
Thinning design requirement, at the same can reduce between different batches the fluctuation range of material mechanical performance index especially elongation percentage value and
Reduce between different batches wide plate and mechanical performance index especially elongation percentage value between wide cut and regular width sheet material
Fluctuation range, meets ADR（Road in Europe hazardous materials transportation agreement）With automobile industry quality requirement.
Specific embodiment
The technical scheme in the embodiment of the present invention will be clearly and completely described below.Obviously, described implementation
Example is only a part of embodiment of the invention, rather than whole embodiments.Based on the embodiment in the present invention, this area is common
The every other embodiment that technical staff is obtained under the premise of creative work is not made, belongs to the model of present invention protection
Enclose.
Embodiment 1
Embodiment 1 provides a kind of method by conventionally produced high Mg-Al alloy plate.
Step（One）：By traditional high-magnesium aluminum alloy component melting high-magnesium aluminum alloy alloy, after deaerated, filtering, half is carried out
Continuously casting, casts out the slab ingot that width is 2650mm.
Step（Two）：Slab ingot is carried out into crop end and the treatment of milling face.
Step（Three）：Slab ingot is preheated 5 hours in 510 DEG C, the coiled base of hot rolling, hot rolling finishing temperature is 320 DEG C, volume base is thick
It is 6mm to spend.
Step（Four）：Volume base is made annealing treatment, annealing temperature is 360 DEG C, and soaking time is 10h, obtained after annealing
Coiled material, obtains sheet material after uncoiling.
Embodiment 2
Embodiment 2 provides a kind of aluminum alloy plate materials preparation method, comprises the following steps：
（One）Casting ingot casting：Cast aluminium alloy gold ingot casting, component and weight hundred for the aluminium alloy melt of cast aluminium alloy gold ingot casting
Point ratio is：Mg：4.5%, Mn：0.2%, Si：0.2%, Cr：0.1%, Cu：0.1%, Fe：0.2%, Zn：0.1%, Ti：0.1%, Na：
0.0003%, remaining is Al and inevitable impurity element；Two grades of degasification are carried out to aluminium alloy melt, at three-level slag removal and purification
After reason, using heat top semicontinuous casting technique cast aluminium alloy gold ingot casting, aluminium alloy cast ingot width 2650mm.The aluminium alloy casting of casting
Ingot is slab ingot, and crop end and the treatment of milling face will be carried out after the slab ingot soaking.
（Two）Hot rolling：Aluminium alloy cast ingot is preheated, the coiled base of hot rolling, the finish to gauge temperature of hot rolling after aluminium alloy cast ingot preheating
It is 350 DEG C to spend, and the thickness of volume base is reserved with the reserved thickness of 14.2% cold processing ratio, and the thickness that base is rolled up after hot rolling is 7mm.
（Three）It is cold rolling：Volume base is carried out into cold rolling, a cold rolling passage, 6mm, cold rolling rear acquisition cold rolling coil is cold-rolled to.
（Four）Aligning and cutting plate：Coiled material is cut to sheet material, it is crosscutting before through over cleaning and aligning operation.
（Five）Annealing：Full annealing is carried out to cold rolling coil using the stove continous way short annealing of roller bottom, annealing temperature is 330
DEG C, soaking time is 20min, and O state high Mg-Al alloy plates are obtained after annealing.
It is higher than 27% according to the elongation percentage of aluminium alloy obtained in the aluminum alloy plate materials preparation method that embodiment 2 is given.
Embodiment 3
Embodiment 3 provides a kind of aluminum alloy plate materials preparation method, comprises the following steps：
（One）Casting ingot casting：Cast aluminium alloy gold ingot casting, component and weight hundred for the aluminium alloy melt of cast aluminium alloy gold ingot casting
Point ratio is：Mg：5.5%, Mn：0.8%, Si：0.3%, Cr：0.2%, Cu：0.1%, Fe：0.3%, Zn：0.2%, Ti：0.1%, Na：
0.0003%, remaining is Al and inevitable impurity element；Two grades of degasification are carried out to aluminium alloy melt, at three-level slag removal and purification
After reason, using heat top semicontinuous casting technique cast aluminium alloy gold ingot casting, aluminium alloy cast ingot width 2650mm.The aluminium alloy casting of casting
Ingot is slab ingot, and crop end and the treatment of milling face will be carried out after the slab ingot soaking.
（Two）Hot rolling：Aluminium alloy cast ingot is preheated, the coiled base of hot rolling, the finish to gauge temperature of hot rolling after aluminium alloy cast ingot preheating
It is 350 DEG C to spend, and the thickness of volume base is reserved with the reserved thickness of 14.2% cold processing ratio, and the thickness that base is rolled up after hot rolling is 7mm.
（Three）It is cold rolling：Volume base is carried out into cold rolling, a cold rolling passage, 6mm, cold rolling rear acquisition cold rolling coil is cold-rolled to.
（Four）Aligning and cutting plate：Coiled material is cut to sheet material, it is crosscutting before through over cleaning and aligning operation.
（Five）Annealing：Batch-type furnace batch annealing is carried out using straight sheet pile to anneal cold rolling coil, annealing temperature is 350 DEG C,
Soaking time is 5h, and O state high Mg-Al alloy plates are obtained after annealing.
It is higher than 27% according to the elongation percentage of aluminium alloy obtained in the aluminum alloy plate materials preparation method that embodiment 3 is given.
Embodiment 4
Embodiment 4 provides a kind of aluminum alloy plate materials preparation method, comprises the following steps：
（One）Casting ingot casting：Cast aluminium alloy gold ingot casting, component and weight hundred for the aluminium alloy melt of cast aluminium alloy gold ingot casting
Point ratio is：Mg：4.8%, Mn：0.8%, Si：0.3%, Cr：0.2%, Cu：0.1%, Fe：0.3%, Zn：0.2%, Ti：0.1%, Na：
0.0003%, remaining is Al and inevitable impurity element；Two grades of degasification are carried out to aluminium alloy melt, at three-level slag removal and purification
After reason, using heat top semicontinuous casting technique cast aluminium alloy gold ingot casting, aluminium alloy cast ingot width 2650mm.The aluminium alloy casting of casting
Ingot is slab ingot, and crop end and the treatment of milling face will be carried out after the slab ingot soaking.
（Two）Hot rolling：Aluminium alloy cast ingot is preheated, the coiled base of hot rolling, the finish to gauge temperature of hot rolling after aluminium alloy cast ingot preheating
It is 300 DEG C to spend, and the thickness of volume base is reserved with the reserved thickness of 33.3% cold processing ratio, and the thickness that base is rolled up after hot rolling is 6mm.
（Three）It is cold rolling：Volume base is carried out into cold rolling, cold rolling two passages, 4mm, cold rolling rear acquisition cold rolling coil is cold-rolled to.
（Four）Aligning and cutting plate：Coiled material is cut to sheet material, it is crosscutting before through over cleaning and aligning operation.
（Five）Annealing：Batch-type furnace batch annealing is carried out using straight sheet pile to anneal cold rolling coil, annealing temperature is 300 DEG C,
Soaking time is 5h, and O state high Mg-Al alloy plates are obtained after annealing.
It is higher than 27% according to the elongation percentage of aluminium alloy obtained in the aluminum alloy plate materials preparation method that embodiment 4 is given.
Embodiment 5
Embodiment 5 provides a kind of aluminum alloy plate materials preparation method, comprises the following steps：
（One）Casting ingot casting：Cast aluminium alloy gold ingot casting, component and weight hundred for the aluminium alloy melt of cast aluminium alloy gold ingot casting
Point ratio is：Mg：5.2%, Mn：0.2%, Si：0.2%, Cr：0.1%, Cu：0.1%, Fe：0.2%, Zn：0.1%, Ti：0.1%, Na：
0.0003%, remaining is Al and inevitable impurity element；Two grades of degasification are carried out to aluminium alloy melt, at three-level slag removal and purification
After reason, using heat top semicontinuous casting technique cast aluminium alloy gold ingot casting, aluminium alloy cast ingot width 1500mm.The aluminium alloy casting of casting
Ingot is slab ingot, and crop end and the treatment of milling face will be carried out after the slab ingot soaking.
（Two）Hot rolling：Aluminium alloy cast ingot is preheated, the coiled base of hot rolling, the finish to gauge temperature of hot rolling after aluminium alloy cast ingot preheating
It is 360 DEG C to spend, and the thickness of volume base is reserved with the reserved thickness of 5% cold processing ratio, and the thickness that base is rolled up after hot rolling is 10.5mm.
（Three）It is cold rolling：Volume base is carried out into cold rolling, cold rolling a time, 10mm, cold rolling rear acquisition cold rolling coil is cold-rolled to.
（Four）Aligning and cutting plate：Coiled material is cut to sheet material, it is crosscutting before through over cleaning and aligning operation.
（Five）Annealing：Full annealing is carried out to cold rolling coil using the stove continous way short annealing of roller bottom, annealing temperature is 400
DEG C, soaking time is 30min, and O state high Mg-Al alloy plates are obtained after annealing.
It is higher than 27% according to the elongation percentage of aluminium alloy obtained in the aluminum alloy plate materials preparation method that embodiment 5 is given.
Embodiment 6
Embodiment 6 provides a kind of aluminum alloy plate materials preparation method, comprises the following steps：
（One）Casting ingot casting：Cast aluminium alloy gold ingot casting, component and weight hundred for the aluminium alloy melt of cast aluminium alloy gold ingot casting
Point ratio is：Mg：5.5%, Mn：0.2%, Si：0.2%, Cr：0.1%, Cu：0.1%, Fe：0.2%, Zn：0.1%, Ti：0.1%, Na：
0.0003%, remaining is Al and inevitable impurity element；Two grades of degasification are carried out to aluminium alloy melt, at three-level slag removal and purification
After reason, using heat top semicontinuous casting technique cast aluminium alloy gold ingot casting, aluminium alloy cast ingot width 2000mm.The aluminium alloy casting of casting
Ingot is slab ingot, and crop end and the treatment of milling face will be carried out after the slab ingot soaking.
（Two）Hot rolling：Aluminium alloy cast ingot is preheated, the coiled base of hot rolling, the finish to gauge temperature of hot rolling after aluminium alloy cast ingot preheating
It is 260 DEG C to spend, and the thickness of volume base is reserved with the reserved thickness of 14.2% cold processing ratio, and the thickness that base is rolled up after hot rolling is 7mm.
（Three）It is cold rolling：Volume base is carried out into cold rolling, cold rolling a time, 6mm, cold rolling rear acquisition cold rolling coil is cold-rolled to.
（Four）Aligning and cutting plate：Coiled material is cut to sheet material, it is crosscutting before through over cleaning and aligning operation.
（Five）Annealing：Full annealing is carried out to cold rolling coil using the stove continous way short annealing of roller bottom, annealing temperature is 400
DEG C, soaking time is 15min, and O state high Mg-Al alloy plates are obtained after annealing.
It is higher than 27% according to the elongation percentage of aluminium alloy obtained in the aluminum alloy plate materials preparation method that embodiment 6 is given.
Performance test is carried out to the product that section Example preparation method is prepared, wherein to the technique by embodiment 1
Method prepare aluminium alloy marked as Sample A, wherein to by embodiment 2 process prepare aluminium alloy marked as sample B,
Wherein to by embodiment 3 process prepare aluminium alloy marked as sample C, the performance for being obtained is as shown in table 1.Wherein,
GB3880.2-2012 is national standard, is general industry aluminium and aluminium alloy plate, band part 2：Mechanical property, expression
It is the canonical parameter scope under GB/T3880.2-2012；EN 14286-2008 are European standard association standards, are that aluminium and aluminium are closed
The storage of gold-dangerous cargo and the standard of the solderable milling material of transport tank.Cpk is Measure of Process Capability in table 1, is modern
Enterprise is used to represent the index of process capability, and Cpk is normal when being 1-1.33, but dangerous close to 1, is to fill during 1.33-1.67
Point, can continue to keep；In this calculating, Cpk takes 25 batches and is counted.
| Alloy state | Rm/MPa | Rp0.2/MPa | A/% | Cpk（A） |
| GB/T3880.2-2012 | 270~345 | ≥115 | 16 | - |
| EN 14286-2008 | 280~350 | ≥125 | 26 | - |
| Sample A-transverse direction | 290~320 | 150~200 | 19~25 | 1.1 |
| Sample A-longitudinal direction | 290~320 | 150~200 | 19~25 | 1.0 |
| Sample B-transverse direction | 280~320 | 125~160 | 27~30 | 1.45 |
| Sample B-longitudinal direction | 280~320 | 125~160 | 27~30 | 1.40 |
| Sample C- transverse directions | 280~320 | 125~170 | 27~30 | 1.38 |
| Sample C- longitudinal directions | 280~320 | 125~170 | 27~30 | 1.31 |
The Sample A of table 1, sample B, the contrast of the performance parameter of sample C and GB/T3880.2-2012 and EN 14286-2008
From table 1 it follows that the tensile strength of Sample A（Rm）Original gauge length is reached with the disproportional elongation in guage section
Stress when 0.2%（Rp0.2）It is slightly better than the tensile strength of sample B and sample C and is reached in the disproportional elongation of guage section
Stress during original gauge length 0.2%；But in elongation percentage（A）The elongation percentage of aspect, sample B and sample C will be much better than prolonging for Sample A
Stretch rate, the elongation percentage of Sample A only reaches GB/T3880.2-2012 standards, the not up to standard of EN 14286-2008, sample B and
Sample C has reached the standard of EN 14286-2008, it was demonstrated that the aluminum alloy plate materials preparation method that the present invention is provided can be carried significantly
Rise the elongation percentage of prepared aluminium alloy；On Cpk, sample B and sample C equally obtain excellent numerical value, it was demonstrated that the present invention
Aluminium alloy prepared by the aluminum alloy plate materials preparation method of the offer material mechanical performance index especially elongation percentage between different batches
Mechanical performance index especially extends between the fluctuation of value and different batches wide plate and between wide cut and regular width sheet material
The fluctuation very little of rate value, show the present invention offer aluminum alloy plate materials preparation method prepared by aluminium alloy elongation percentage value very
Stabilization.
The above, specific embodiment only of the invention, but protection scope of the present invention is not limited thereto, and it is any
Those familiar with the art the invention discloses technical scope in, the change or replacement that can be readily occurred in, all should
It is included within the scope of the present invention.Therefore, protection scope of the present invention should be with the scope of the claims
It is accurate.
Claims (5)
1. a kind of aluminum alloy plate materials preparation method, it is characterised in that include following steps：
（One）Casting ingot casting：Cast aluminium alloy gold ingot casting, component and weight for casting the aluminium alloy melt of the aluminium alloy cast ingot
Measuring percentage is：Mg：4.5 ~ 5.5%, Mn：0.2 ~ 0.8%, Si：≤ 0.3%, Cr：≤ 0.2%, Cu：≤ 0.1%, Fe：≤ 0.3%,
Zn：≤ 0.2%, Ti：≤ 0.1%, Na：≤ 0.0003%, remaining is Al and inevitable impurity element；It is molten to the aluminium alloy
After body carries out two grades of degasification, the treatment of three-level slag removal and purification, the aluminium alloy cast ingot, institute are cast using heat top semicontinuous casting technique
State 1500 ~ 2650mm of aluminium alloy cast ingot width；
（Two）Hot rolling：The aluminium alloy cast ingot is preheated, the coiled base of hot rolling, the end of hot rolling after the aluminium alloy cast ingot preheating
Temperature is rolled for 260 ~ 360 DEG C, and the thickness of the volume base is reserved with the reserved thickness of 5 ~ 50% cold processing ratio；
（Three）It is cold rolling：The volume base is carried out cold rolling, is cold-rolled to finished product thickness, it is cold rolling after obtain cold rolling coil；
（Four）Aligning and cutting plate：By the cold rolling coil it is crosscutting be sheet material, it is crosscutting before through over cleaning and aligning operation；
（Five）Annealing：Full annealing is carried out using continuous quick plate-sheet-type annealing or the annealing of straight sheet pile formula, annealing temperature is 300 ~ 400
DEG C, soaking time is 15min ~ 5h, and high Mg-Al alloy plate is obtained after annealing.
2. aluminum alloy plate materials preparation method according to claim 1, it is characterised in that：Step（One）After casting ingot casting,
Also include will be cut off after the aluminium alloy cast ingot soaking end to end with milling face the step of.
3. aluminum alloy plate materials preparation method according to claim 1, it is characterised in that：The aluminium alloy melt of aluminium alloy cast ingot
Component and percentage by weight be：Mg：4.8 ~ 5.2%, Mn：0.2 ~ 0.8%, Si：≤ 0.3%, Cr：≤ 0.2%, Cu：≤ 0.1%,
Fe：≤ 0.3%, Zn：≤ 0.2%, Ti：≤ 0.1%, Na：≤ 0.0003%, remaining is Al and inevitable impurity element.
4. aluminum alloy plate materials preparation method according to claim 1, it is characterised in that：Step（Two）In hot rolling, the heat
The finishing temperature rolled is 300 ~ 350 DEG C.
5. a kind of aluminum alloy plate materials preparation method according to claim 1, it is characterised in that：Step（Three）In cold rolling, institute
Finished product thickness is stated for 4 ~ 10mm.
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| CN108251666A (en) * | 2018-02-01 | 2018-07-06 | 广西南南铝加工有限公司 | A kind of preparation process of super high Mg-Al alloy plate |
| CN108388706A (en) * | 2018-02-01 | 2018-08-10 | 广西南南铝加工有限公司 | The computational methods of drawing force and its application in a kind of aluminum alloy plate materials preparation process |
| CN109055788A (en) * | 2018-09-18 | 2018-12-21 | 天津忠旺铝业有限公司 | A kind of preparation process eliminating 5 line aluminium alloy plate surface bands |
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| CN114318034A (en) * | 2021-12-24 | 2022-04-12 | 东北轻合金有限责任公司 | Manufacturing method for producing aluminum alloy stamping part for vehicle bumper by using air cushion furnace |
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| CN108251666A (en) * | 2018-02-01 | 2018-07-06 | 广西南南铝加工有限公司 | A kind of preparation process of super high Mg-Al alloy plate |
| CN108388706A (en) * | 2018-02-01 | 2018-08-10 | 广西南南铝加工有限公司 | The computational methods of drawing force and its application in a kind of aluminum alloy plate materials preparation process |
| CN109055788A (en) * | 2018-09-18 | 2018-12-21 | 天津忠旺铝业有限公司 | A kind of preparation process eliminating 5 line aluminium alloy plate surface bands |
| CN109266881A (en) * | 2018-11-29 | 2019-01-25 | 天津忠旺铝业有限公司 | A kind of preparation process of 5083 aluminium alloy of high buckling performance |
| CN109625664A (en) * | 2018-12-03 | 2019-04-16 | 徐州宁铝业科技有限公司 | A kind of aluminium alloy oil tank that security performance is high |
| CN114318034A (en) * | 2021-12-24 | 2022-04-12 | 东北轻合金有限责任公司 | Manufacturing method for producing aluminum alloy stamping part for vehicle bumper by using air cushion furnace |
| CN115369293A (en) * | 2022-04-08 | 2022-11-22 | 中铝瑞闽股份有限公司 | Al-Mg series aluminum plate strip for high-strength anodic oxidation and preparation method thereof |
| CN115369293B (en) * | 2022-04-08 | 2023-08-18 | 中铝瑞闽股份有限公司 | High-strength Al-Mg aluminum plate strip for anodic oxidation and preparation method thereof |
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