CN104451284A - 5182-H48 aluminum alloy strip for zip-top can cover and production method of 5182-H48 aluminum alloy strip - Google Patents
5182-H48 aluminum alloy strip for zip-top can cover and production method of 5182-H48 aluminum alloy strip Download PDFInfo
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- CN104451284A CN104451284A CN201410706293.5A CN201410706293A CN104451284A CN 104451284 A CN104451284 A CN 104451284A CN 201410706293 A CN201410706293 A CN 201410706293A CN 104451284 A CN104451284 A CN 104451284A
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- rolling
- aluminium alloy
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- rolled
- aluminum alloy
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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
-
- 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 invention discloses a 5182-H48 aluminum alloy strip for a zip-top can cover. The 5182-H48 aluminum alloy strip comprises the following chemical content in percentage by weight: 0.15% of Si, 0.30% of Fe, 0.10% of Cu, 0.30-0.40% of Mn, 4.30-4.80% of Mg, 0.08% of Cr, 0.25% of Zn, 0.01-0.03% of Ti and the balance of Al. A production method of the aluminum alloy strip comprises the process steps of (1) ingot casting, (2) surface milling of a cast ingot, (3) heating of the cast ingot, (4) hot rolling of the cast ingot, (5) cold rolling and blooming, and (6) finished product cold rolling, stretch bend straightening, cleaning, coating, splitting and packaging, wherein in the cold rolling process of the cast ingot, stretch bend straightening and cleaning and middle annealing treatment are carried out twice respectively. The production process of the 5182-H48 aluminum alloy strip for the zip-top can cover is studied and combined with home equipment, and then the zip-top can cover which is made of the 5182 alloy and is 0.22 millimeters thick is successfully produced and makes up for the blank of the same kind of products produced by home equipment.
Description
Technical field:
The present invention relates to a kind of pop can cover 5182-H48 aluminium alloy strips, particularly relate to a kind of production method of this pop can cover 5182-H48 aluminium alloy strips.
Background technology:
Aluminum easy open can has that body is light, anti-corrosion, heat conductivity is good, tasteless, nontoxic, printing effect is good, the advantage such as attractive in appearance of decorateing, and brings graceful visual experience to human consumer.Aluminum easy open can compares other cover, not only superior in performance, and making also can mechanize, extensive, and cost is low, pollution-free, goes back recoverable.Therefore, 80 ~ nineties of 20th century, whole world pop can consumption sharply increased, and had absolute predominance status in drink pack market, the world.Be wherein principal market with North America, consumption 2,400,000 tons/year, pre-capita consumption 480/year; Japan's pre-capita consumption is 220/year; Europe pre-capita consumption is 220/year; China's pre-capita consumption is only 20/year.Gap is exactly opportunity, along with the rapid raising of internal people's standard of living, pop can consumption will present explosive growth, considers and keeps the factors such as 15% average growth rate per annum in recent years always, the five-year consumption will reach 1,000,000 tons, have good market outlook.
5182-H48 aluminium alloy strips, as pop can cover material, has following concrete specification of quality: 1. thickness permissible variation: ± 0.002 ㎜; 2. width permissible variation :-0+0.4 ㎜; 3. flatness requirements: band is launched to be placed on platform, in the scope of whole width or any 2m length, the maximum clearance value between web planarity and platform is not more than 2 ㎜, and the wave in any 1m width or length range is no more than 2; 4. mechanical property requirements: tensile strength 370 ~ 420MPa, yield strength 330 ~ 360MPa, unit elongation >=5%; 5. coating performance: boiling test, cooking test, acid resistance test, sticking power test must be passed through, in coating thickness 11 ± 1 grams/m, outer 5 ± 1 grams/m, waxing amount 70 ± 20 milli gram/m/face; 6. appearance requirement: strip surface answers uniformity, cleaning, do not allowed burn into run through pore, sticky wound, metal and nonmetal press-in, pine tree shape decorative pattern, do not allow serious cut, greasy dirt, oil mark, roll marks etc. affects the mass defect of client's use; Strip edge should trim, and burr is not more than 0.2 millimeter; Band rectilinearity 1.5 millimeters/2000 millimeters, staggered floor is not more than 1 ㎜, and turriform is not more than 2.5 ㎜.
As can be seen here, summarize, the requirements such as cover material 5182-H48 aluminium alloy strips should have " high-performance, dimensional precision are high, plate shape planeness is little, any surface finish ", this wherein, the high-performance how obtaining band is the key in production technique.
Summary of the invention:
Technical problem to be solved by this invention is: provide a kind of high performance pop can cover 5182-H48 aluminium alloy strips and production method thereof.
The technical scheme that the present invention takes for technical solution problem;
A kind of pop can cover 5182-H48 aluminium alloy strips, in units of weight percent, chemical composition contains: Si 0.15%, Fe 0.30%, Cu 0.10%, Mn 0.30 ~ 0.40%, Mg 4.30 ~ 4.80%, Cr 0.08%, Zn 0.25%, Ti 0.01 ~ 0.03%, surplus is Al.
The production method of pop can cover 5182-H48 aluminium alloy strips recited above, its concrete technology step is as follows:
1. ingot casting: prepare burden by the chemical composition of following weight percent: Si 0.15%, Fe 0.30%, Cu 0.10%, Mn 0.1 ~ 0.15%, Mg 4.30 ~ 4.80%, Cr 0.08%, Zn 0.25%, Ti 0.01 ~ 0.03%, surplus is Al;
2. ingot mill surface: by aluminium alloy cast ingot milling face, one side milling face amount >=15mm, ingot casting both sides thickness difference≤3mm, it is 0.05 ~ 0.15mm that milling surface roughness requires;
3. ingot casting heating: the aluminium alloy cast ingot behind milling face is heated to 540 ~ 560 DEG C, and be incubated and come out of the stove after 8 ~ 10 hours, tapping temperature remains on 500 ~ 520 DEG C;
4. slab hot-rolling: by the aluminium alloy cast ingot after coming out of the stove through the rolling of 15 ~ 25 times, be rolled to the blank material that thickness is 4 ~ 6mm, in course of hot rolling, the temperature of homogenizing heating remains between 465 ~ 485 DEG C, and hot rolling finishing temperature is not less than 340 DEG C;
5. cold rolling cogging: be rolled into 0.30 ~ 0.35mm by 4 ~ 6mm, carry out twice stretch-bending straightening cleaning and process annealing respectively in the operation of rolling, intermediate anneal temperature remains on 390 DEG C;
6. finished product is cold rolling: by 0.30 ~ 0.35mm again through the rolling of 2 ~ 4 times, be rolled into 0.22mm, stretch-bending straightening, cleaning, coating, cuts, packs, and to obtain final product.
In ingot casting cold-rolled process, when being rolled within the scope of 3.0 ~ 3.50mm and 1.0 ~ 1.50mm two, carry out twice stretch-bending straightening cleaning and process annealing process respectively.
In the present invention, the determination of each chemical composition and chemical composition are on the impact of band mechanical property:
1. Mg: main with solid solution condition and β (Mg-
2a1
3or Mg
5a1
8) two kinds of forms existence mutually, wherein β (Mg
2a1
3) be complicated face-centered cubic metastable phase mutually, change as Mg
5a1
8the thermodynamic tendency of stable phase, Mg reaches capacity when eutectic temperature 450 degree solid solubility 17.4%, now, Mg, Al intermetallic compound and β phase and αsolidsolution form eutectic structure, along with temperature reduces, αsolidsolution progressively separates out β phase particle, and the rate of decomposition of α supersaturated solid solution is extremely slow, usual 5 line aluminium alloys partly will retain larger Mg super saturated solid solution degree in ingot casting repeatedly, this thermodynamically and unstable, through reheat or room temperature deposit all can spontaneous precipitation β phase, thus the ageing strengthening effect of alloy is low.The intensity of 5182 alloys improves along with the increase of Mg content, and plasticity then decreases, therefore Mg content controls below 5.5%, and optimum range is 4.30 ~ 4.80%.
2. Mn: part is solid-solution in matrix, and all the other are with MnAl
6the form of phase is present in tissue.Mn can put forward heavy alloyed recrystallization temperature, stops grain coarsening, and alloy strength is slightly improved, especially more obvious to yield strength effect.Therefore Mg content optimum range controls between 0.30 ~ 0.40%.
3. Fe: namely a small amount of Fe forms the needle-like FeAl being insoluble to α matrix
3phase, weakens matrix, significantly falls low-alloyed mechanical property; Between FeAl3 and α, potential difference is comparatively large, therefore reduces corrosion stability.Meanwhile, Mn and Cr in Fe and alloy forms insoluble intermetallic compound, makes to occur firmly crisp multi-element compounds in cast structure, when cold rolling, easily raw edges occur.Therefore, iron level generally should control below 0.35%, and consider the high-performance required by 5182-H48 aluminium alloy strips, iron level controls 0.30%.
4. Si: the Mg forming thicker bone shape in the alloy with Mg
2si phase, its amount increases with the increase of Si amount, and the increase that solubleness in α is measured with Mg and reducing.Mg under high temperature
2the solubleness of Si in α is very little, Mg during thermal treatment
2si phase can not be dissolved and still keep original form.At this moment part Mg is by Mg
2si constraint can not play strengthening effect, and Mg2Si is thick and property is crisp, significantly falls low-alloyed mechanical property.Si can make alloy grain thick, thus Si not only strengthening effect is little, reduce the plasticity of alloy on the contrary.Therefore, draw ring content of Si in 5182 alloy strip steel rolled stocks should limit, and is 0.15%.
5. Cr: be Addition ofelements common in Al-Mg system alloy.O.8% the solubleness of Cr in aluminium be about 660 DEG C time, substantially do not dissolve during room temperature, mainly exists with compound form, and hinder the nucleation process of recrystallize, alloy has certain strengthening effect.In addition, Cr can also improve alloy ductility and reduce stress corrosion opening cracking maleate sensitivity.But the content of Cr is generally no more than 0.35%, otherwise Cr can form thick intermetallics with other alloying elements or impurity such as Mn, Fe, Ti etc., reduces the mechanical property such as forming property and fracture toughness property.The velocity of diffusion of Cr is low, forms tiny disperse phase in pressing process, nucleus can be suppressed to be formed and grain growth, therefore can control the microstructure of alloy with Cr.Cr and Mn adds simultaneously, its effect than single add large, therefore Cr is 0.08%.
In the present invention, production technique is on the impact of 5182-H48 aluminium alloy strips band performance:
1. hot rolling homogenizing heating cycle, open rolling and finishing temperature are on the impact of band performance:
Course of hot rolling is along with the dual characteristics of viscous deformation and dynamic recrystallization.On the impact of texture very greatly, hot-rolled temperature is higher for start rolling temperature and finishing temperature, and the recrystallization texture after cold rolling is residual more relatively by force, is conducive to the strengthening of cubic texture; When hot-rolled temperature is lower, hot-rolled sheet will present stronger deformation texture, and follow-up cold rolling being difficult to proceeds.So reasonably homogenizing heating cycle and hot rolling technology system can ensure that whole course of hot rolling is in dynamic recrystallization always, ensure the performance of follow-up final finished.The object of ingot casting being carried out to homogenizing heating is that the atom of inside ingot is vibrated fully, eliminates casting stress, eliminates grain segregation and regional segregation, for hot rolling provides good plasticity.The temperature of homogenizing heating is between 465 ~ 485 DEG C, and optimum temps is 475 DEG C.
The residual quantity of the cold rolling rear recrystallization texture of hot rolling finishing temperature impact, finishing temperature is higher, and the residual quantity of cold rolling rear recrystallization texture is more.Consider the restriction of hot rolling speed, road sub-quantity etc., the good control on hot rolled band surface, through a large amount of production practice, hot rolling finishing temperature is defined as being not less than 340 DEG C.
2. intermediate anneal temperature:
The mechanical property accurately controlling band for rear operation is laid the groundwork, and simultaneously generates recrystallization texture further, the recrystallization texture quantity that at this moment band is total be enough to and before this and the rolling texture of follow-up formation reach certain relation, affect band lastness energy.So intermediate anneal temperature is determined at 390 DEG C.
The present invention is by the process study to pop can cover 5182-H48 aluminium alloy strips, what adopt in conjunction with patentee is the feature of home equipment entirely, successfully produce the pop can cover that thickness is 0.22 millimeter of 5182 alloy, fill up the blank that this series products produced by home equipment.
Embodiment:
Embodiment 1: a kind of pop can cover 5182-H48 aluminium alloy strips, in units of weight percent, chemical composition contains: Si 0.15%, Fe 0.30%, Cu 0.10%, Mn 0.30%, Mg 4.30%, Cr 0.08%, Zn 0.25%, Ti 0.01%, surplus is Al.
The production method of pop can cover 5182-H48 aluminium alloy strips recited above, its concrete technology step is as follows:
1. ingot casting: prepare burden by the chemical composition of following weight percent: Si 0.15%, Fe 0.30%, Cu 0.10%, Mn 0.30 ~ 0.40%, Mg 4.30 ~ 4.80%, Cr 0.08%, Zn 0.25%, Ti 0.01 ~ 0.03%, surplus is Al;
2. ingot mill surface: by aluminium alloy cast ingot milling face, one side milling face amount >=15mm, ingot casting both sides thickness difference≤3mm, it is 0.05 ~ 0.15mm that milling surface roughness requires;
3. ingot casting heating: the aluminium alloy cast ingot behind milling face is heated to 540 ~ 560 DEG C, and be incubated and come out of the stove after 8 ~ 10 hours, tapping temperature remains on 500 ~ 520 DEG C;
4. slab hot-rolling: by the aluminium alloy cast ingot after coming out of the stove through the rolling of 15 ~ 25 times, be rolled to the blank material that thickness is 4 ~ 6mm, in course of hot rolling, the temperature of homogenizing heating remains between 465 ~ 485 DEG C, and hot rolling finishing temperature is not less than 340 DEG C;
5. cold rolling cogging: be rolled into 0.30 ~ 0.35mm by 4 ~ 6mm, carry out twice stretch-bending straightening cleaning and process annealing respectively in the operation of rolling, intermediate anneal temperature remains on 390 DEG C;
6. finished product is cold rolling: by 0.30 ~ 0.35mm again through the rolling of 2 ~ 4 times, be rolled into 0.22mm, stretch-bending straightening, cleaning, coating, cuts, packs, and to obtain final product.
In ingot casting cold-rolled process, when being rolled within the scope of 3.0 ~ 3.50mm and 1.0 ~ 1.50mm two, carry out twice stretch-bending straightening cleaning and process annealing process respectively.
Embodiment 2: the production method of the present embodiment is identical with embodiment 1, and something in common does not repeat, and difference is: a kind of pop can cover 5182-H48 aluminium alloy strips, in units of weight percent, chemical composition contains: Si 0.15%, Fe 0.30%, Cu 0.10%, Mn 0.40%, Mg 4.80%, Cr 0.08%, Zn 0.25%, Ti 0.03%, surplus is Al.
Embodiment 3: the production method of the present embodiment is identical with embodiment 1, and something in common does not repeat, and difference is: a kind of pop can cover 5182-H48 aluminium alloy strips, in units of weight percent, chemical composition contains: Si 0.15%, Fe 0.30%, Cu 0.10%, Mn0.35%, Mg 4.60%, Cr 0.08%, Zn 0.25%, Ti 0.02%, surplus is Al.
Embodiment 4: the production method of the present embodiment is identical with embodiment 1, and something in common does not repeat, and difference is: a kind of pop can cover 5182-H48 aluminium alloy strips, in units of weight percent, chemical composition contains: Si 0.15%, Fe 0.30%, Cu 0.10%, Mn 0.32%, Mg 4.40%, Cr 0.08%, Zn 0.25%, Ti 0.02%, surplus is Al.
Claims (3)
1. a pop can cover 5182-H48 aluminium alloy strips, it is characterized in that: in units of weight percent, chemical composition contains: Si 0.15%, Fe 0.30%, Cu 0.10%, Mn 0.30 ~ 0.40%, Mg 4.30 ~ 4.80%, Cr 0.08%, Zn 0.25%, Ti 0.01 ~ 0.03%, surplus is Al.
2. the production method of pop can cover 5182-H48 aluminium alloy strips according to claim 1, its concrete technology step is as follows:
1. ingot casting: prepare burden by the chemical composition of following weight percent: Si 0.15%, Fe 0.30%, Cu 0.10%, Mn 0.30 ~ 0.40%, Mg 4.30 ~ 4.80%, Cr 0.08%, Zn 0.25%, Ti 0.01 ~ 0.03%, surplus is Al;
2. ingot mill surface: by aluminium alloy cast ingot milling face, one side milling face amount >=15mm, ingot casting both sides thickness difference≤3mm, it is 0.05 ~ 0.15mm that milling surface roughness requires;
3. ingot casting heating: the aluminium alloy cast ingot behind milling face is heated to 540 ~ 560 DEG C, and be incubated and come out of the stove after 8 ~ 10 hours, tapping temperature remains on 500 ~ 520 DEG C;
4. slab hot-rolling: by the aluminium alloy cast ingot after coming out of the stove through the rolling of 15 ~ 25 passages, be rolled to the blank material that thickness is 4 ~ 6mm, in course of hot rolling, the temperature of homogenizing heating remains between 465 ~ 485 DEG C, and hot rolling finishing temperature is not less than 340 DEG C;
5. cold rolling cogging: be rolled into 0.30 ~ 0.35mm by 4 ~ 6mm, carry out twice stretch-bending straightening cleaning and process annealing respectively in the operation of rolling, intermediate anneal temperature remains on 390 DEG C;
6. finished product is cold rolling: by 0.30 ~ 0.35mm again through the rolling of 2 ~ 4 times, be rolled into 0.22mm, stretch-bending straightening, cleaning, coating, cuts, packs, and to obtain final product.
3. the production method of pop can cover 5182-H48 aluminium alloy strips according to claim 2, it is characterized in that: in ingot casting cold-rolled process, when being rolled within the scope of 3.0 ~ 3.50mm and 1.0 ~ 1.50mm two, carry out twice stretch-bending straightening cleaning and process annealing process respectively.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105506415A (en) * | 2015-12-31 | 2016-04-20 | 中铝西南铝冷连轧板带有限公司 | 5182 aluminum alloy strip and production method thereof |
| CN105568086A (en) * | 2015-12-31 | 2016-05-11 | 中铝西南铝冷连轧板带有限公司 | 5182 alloy strip for thin tank cover and production method of 5182 alloy strip |
| CN105755333A (en) * | 2016-03-17 | 2016-07-13 | 中铝科学技术研究院有限公司 | Preparation method of aluminum alloy plate for thin cover of zip-top can |
| CN105803275A (en) * | 2016-03-17 | 2016-07-27 | 中铝科学技术研究院有限公司 | Aluminum alloy sheet material for thin ring-pull can cover and preparation method |
| CN106834825A (en) * | 2016-11-16 | 2017-06-13 | 广西南南铝加工有限公司 | 5182 aluminium alloys and the aluminium alloy are prepared into the process of cover material strip material |
| CN108385044A (en) * | 2018-03-06 | 2018-08-10 | 东北大学 | A kind of preparation method of 5182 aluminum alloy plate materials of body of a motor car |
| JP2018199866A (en) * | 2018-08-24 | 2018-12-20 | 株式会社神戸製鋼所 | Aluminum alloy sheet for resin coated can body |
| CN112828034A (en) * | 2020-12-30 | 2021-05-25 | 西南铝业（集团）有限责任公司 | Production method of aluminum-magnesium-silicon alloy strip |
| CN114875254A (en) * | 2022-03-26 | 2022-08-09 | 河南中孚高精铝材有限公司 | Production method of coiled material for aluminum alloy R0PP bottle cap |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105506415A (en) * | 2015-12-31 | 2016-04-20 | 中铝西南铝冷连轧板带有限公司 | 5182 aluminum alloy strip and production method thereof |
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| CN105803275A (en) * | 2016-03-17 | 2016-07-27 | 中铝科学技术研究院有限公司 | Aluminum alloy sheet material for thin ring-pull can cover and preparation method |
| CN106834825A (en) * | 2016-11-16 | 2017-06-13 | 广西南南铝加工有限公司 | 5182 aluminium alloys and the aluminium alloy are prepared into the process of cover material strip material |
| CN108385044A (en) * | 2018-03-06 | 2018-08-10 | 东北大学 | A kind of preparation method of 5182 aluminum alloy plate materials of body of a motor car |
| JP2018199866A (en) * | 2018-08-24 | 2018-12-20 | 株式会社神戸製鋼所 | Aluminum alloy sheet for resin coated can body |
| CN112828034A (en) * | 2020-12-30 | 2021-05-25 | 西南铝业（集团）有限责任公司 | Production method of aluminum-magnesium-silicon alloy strip |
| CN114875254A (en) * | 2022-03-26 | 2022-08-09 | 河南中孚高精铝材有限公司 | Production method of coiled material for aluminum alloy R0PP bottle cap |
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