CN110102580B - Production method of 1100-H14 state aluminum alloy strip for processing high-end cosmetic bottle cap - Google Patents
Production method of 1100-H14 state aluminum alloy strip for processing high-end cosmetic bottle cap Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/28—Control of flatness or profile during rolling of strip, sheets or plates
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/28—Control of flatness or profile during rolling of strip, sheets or plates
- B21B37/44—Control of flatness or profile during rolling of strip, sheets or plates using heating, lubricating or water-spray cooling of the product
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C21/00—Alloys based on aluminium
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B2015/0064—Uncoiling the rolled product
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Abstract
The invention belongs to the technical field of aluminum alloy processing, and discloses a production method of an 1100-H14 state aluminum alloy strip for processing a high-end cosmetic bottle cap, which comprises the following steps: smelting, ingot casting by adopting a semi-continuous method, homogenizing heat treatment, head cutting, tail cutting and face milling, hot rolling, primary cold rolling, primary intermediate annealing, secondary cold rolling, secondary intermediate annealing, tertiary cold rolling to the thickness of a finished product below 0.7mm, cleaning, and straightening. The hot rolling and cold rolling process is optimized, the rolling texture and the annealing texture after the heat treatment system and the final cold rolling deformation are balanced, the thickness of a rolled finished product is less than 1mm, the earing rate of the material after punching is reduced, the high surface characteristic of the material after anodic oxidation and coloring is ensured, the color and luster after oxidation and coloring are uniform and consistent, the appearance metal texture is strong, and the use requirement of a high-end cosmetic cover material base material is met.
Description
Technical Field
The invention belongs to the technical field of aluminum alloy processing, and particularly relates to a production method of an 1100-H14 state aluminum alloy strip for processing a high-end cosmetic bottle cap.
Background
The aluminum alloy bottle cap material is used as a novel bottle cap sealing material and widely applied to outer sealing packages of wine bottles, can bottles, medicine bottles and cosmetic caps, the punching molding is mostly processed on a production line with higher automation degree, the requirements on the performance, the dimensional deviation, the ear making rate and the like of the material are strict, and otherwise, the cap punching effect and the finished product rate are seriously influenced due to the breakage, the crease and the like.
Along with the increasing living standard of people, the cosmetic sealing cover is made to be more and more high-grade, and the high-grade cosmetic bottle cover material in the market is developed to the aspects of anodic oxidation, electrolytic coloring/dyeing by painting manufacture of the traditional process. Because the bottle cap material forms a compact oxide film on the surface of aluminum after anodic oxidation, the corrosion resistance, the wear resistance and the decorative performance of the bottle cap material can be obviously changed; the electrolytic coloring has rich appearance and color and strong metal feeling, so the prior high-grade cosmetic bottle cap and high-grade IT product shell adopt the coloring or dyeing process after anodic oxidation to improve the decoration.
The requirements of the high-grade cosmetic bottle cap material on the surface quality almost reach the quality standard of 'zero defect', namely the material surface is not allowed to have defects such as bright lines, stripes, black and white spots and the like. When aluminum and aluminum alloy are anodized, alkali washing and acid washing are carried out, and small defects on the surface and the shallow surface layer of the base material are exposed or amplified in the oxidation process, so that the quality effect of the oxidized surface is influenced, for example, slight strip defects, black strips, sticky points, marks and the like on the surface are clearly exposed after the anodic oxidation. At present, common aluminum alloys and states for bottle caps on the market are as follows: 8011-H14/H16 or 3003-H16, etc., but the anode oxidation effect of the top-grade cosmetic bottle cover material made of the two aluminum alloys is not ideal.
The surface quality of the aluminum alloy plate strip produced by the traditional 1100-H14 production process cannot meet the surface requirement of an advanced oxidation appearance material, and the thickness of the aluminum alloy plate strip is more than 1.0 mm. The invention patent with the publication number of CN 103009010B discloses an 1100-H14 aluminum alloy plate strip and a production method thereof, and the production flow comprises the following steps: the method comprises the steps of casting, sawing, milling, heating, hot rolling and cold rolling, wherein although the hot rolling process is improved, the thickness of a finished product obtained by cold rolling is still more than 1mm, and whether the earing rate of the high-grade cosmetic bottle cap material can meet the requirement or not is unknown.
Disclosure of Invention
The invention aims to provide a production method of 1100-H14 state aluminum alloy strip for processing high-grade cosmetic bottle caps, which ensures good stamping performance and low earing rate and meets the requirement that the material has an attractive surface after being anodized.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a production method of 1100-H14 state aluminum alloy strip for processing a high-end cosmetic bottle cap, which comprises the following steps:
step a: smelting at the temperature of 700-750 ℃; the smelted aluminum alloy comprises the following components in percentage by mass: si is more than or equal to 0.05 percent and less than or equal to 0.15 percent, Fe is more than or equal to 0.55 percent and less than or equal to 0.35 percent, Cu is more than or equal to 0.20 percent and less than or equal to 0.10 percent, Mn is less than or equal to 0.02 percent, Mg is less than or equal to 0.05 percent, Ti is less than or equal to 0.04 percent, other impurities are less than or equal to 0.05 percent in total;
step b: ingot casting by adopting a semi-continuous method;
step c: carrying out homogenization heat treatment on the cast ingot at the temperature of 600 +/-15 ℃ for 12-16 h, and cutting the head, the tail and milling the surface;
step d: hot rolling to a hot rolled blank with the thickness of more than 8.0mm, wherein the final rolling temperature is more than 300 ℃;
step e: performing 2-pass rolling, and performing primary cold rolling to the thickness of 3.5-4.5 mm;
step f: heating the blank to 200-220 ℃, preserving heat for 4-5 hours, carrying out primary oil removal, and carrying out primary intermediate annealing; the primary intermediate annealing temperature is 360-450 ℃, and the temperature is kept for 20-24 hours;
step g: rolling for 2-4 times, reserving the machining amount of 38-42% according to the thickness of a finished product, and performing secondary cold rolling;
step h: heating the blank to 200-220 ℃, preserving heat for 4-5 hours, carrying out secondary oil removal, and carrying out secondary intermediate annealing; the secondary intermediate annealing temperature is 320-360 ℃, and the temperature is kept for 20-24 hours;
step i: rolling for 1-2 times, and cold rolling for three times to the thickness of a finished product below 0.7 mm;
step j: cleaning and straightening.
Preferably, the casting temperature of the semi-continuous method ingot casting in the step b is 690-730 ℃, and the casting speed is 50-65 mm/min.
Preferably, the hot rolling in the step d is to heat the cast ingot to 450-530 ℃, preserve heat for more than 3 hours, firstly carry out hot rough rolling, and then carry out hot finish rolling to obtain a hot rolling blank with the thickness of more than 8.0 mm.
Preferably, the emulsion parameters in the hot rough rolling are as follows: the concentration is 4.0-6.0%, the temperature is 45-60 ℃, the pH value is 7.5-8.5, the ash content is less than 800PPm, and the conductivity is less than 500 mu s/cm.
Preferably, the emulsion parameters in the finish hot rolling are as follows: the concentration is 7.0-8.0%, the temperature is 45-65 ℃, the pH value is 7.5-8.5, the ash content is less than 1000PPm, and the conductivity is less than 800 mu s/cm.
Preferably, the rotating speed of the hot finish rolling brush roller is 400-500 revolutions per minute, the shifting frequency is 20-30 times per minute, and the pressing force is 300-400N.
Preferably, the first-pass uncoiling tension in the one-pass cold rolling in the step e is less than or equal to 6N/mm, the reduction rate of each pass is 25-40%, and the roughness Ra of the roller is 0.3-0.4 μm.
Preferably, the first pass uncoiling tension in the secondary cold rolling in the step g is less than or equal to 8N/mm, the reduction rate of each pass is 25-45%, and the roller roughness Ra is 0.18-0.22 μm.
Preferably, the uncoiling tension of the first pass in the three cold rolling in the step i is not more than 16N/mm, the reduction rate of each pass is 20-25%, and the roughness Ra of the roller is 0.18-0.22 μm.
Preferably, the uncoiling tension of the withdrawal and straightening in the step j is less than or equal to 800N.
Compared with the prior art, the invention has the beneficial effects that:
the method optimizes the heating temperature and the heat preservation time of the homogenization heat treatment by strictly controlling the contents of three elements of Fe, Si and Cu and the Fe/Si ratio, and reduces the anisotropy of the hot rolled blank by improving the finish rolling temperature of the hot rolled blank; the cold rolling part is subjected to intermediate annealing twice at a certain thickness, so that a heat treatment system and a rolling texture and an annealing texture after final cold rolling deformation are balanced, the thickness of a rolled finished product is less than 1mm, the earing rate of the material after punching is reduced, and the actual earing rate can reach less than 2.5%; according to the invention, by optimizing the hot rolling and cold rolling processes, the high surface characteristics of the material after anodic oxidation and coloring are ensured, the color and luster after oxidation and coloring are uniform and consistent, the appearance has strong metal texture, and the use requirement of a high-end cosmetic cover material base material is met.
The method further controls the aluminum adhering condition of the hot rolling roller, so that the thickness and the uniformity of the aluminum adhering layer on the surface of the hot rolling roller are effectively controlled; the cleanliness of hot rolling emulsion is improved, the lubricating capability of the emulsion is enhanced, the surface quality of a hot rolling blank is improved, and the surface residue of putty on a hot rolling coil is reduced; the roughness of a roller is adjusted during cold rolling, and the uncoiling tension of a blank and the matching performance of the tension of each pass are controlled so as to reduce the quality defects of the cold-rolled surface, such as sticky points, scratches, over-pressure scratches and the like; by controlling the uncoiling tension of withdrawal and straightening, dust and foreign matters are reduced to be attached to the strip, so that the surface quality of the 1100-H14 state aluminum alloy strip is greatly improved, and the high surface requirement and the earing rate requirement of the oxidized high-end cosmetic bottle cap material are ensured.
Detailed Description
The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention. Unless otherwise specified, the technical means used in the examples are conventional means well known to those skilled in the art. The test methods in the following examples are conventional methods unless otherwise specified.
The 1+1 type hot rolling unit type is a 3300mm1+1 hot rolling production line, and is developed by the university of the medium color science and technology and the Beijing science and technology together.
Example one
A production method of 1100-H14 state aluminum alloy strip for processing high-end cosmetic bottle caps comprises the following steps:
step a: smelting at the temperature of 700 ℃ for 5 h; the smelted aluminum alloy comprises the following components in percentage by mass: si: 0.127%, Fe: 0.393%, Cu: 0.188%, Mn: 0.0034%, Mg: 0.00085%, Ti: 0.027%, less than or equal to 0.05% of other impurities, and the balance of Al.
Step b: the ingot is cast by adopting a semi-continuous method, wherein the casting temperature of the semi-continuous method ingot is 715 ℃, and the casting speed is 55 mm/min.
Step c: and (3) carrying out homogenization heat treatment on the cast ingot at the temperature of 600 +/-15 ℃ for 12 hours, and cutting the head, the tail and milling the surface.
Step d: heating the cast ingot to 530 ℃, preserving heat for 3 hours, adopting a 1+1 type hot rolling unit, firstly carrying out hot rough rolling, carrying out 17-pass rolling, roughly rolling the cast ingot to 35mm in thickness, then carrying out hot finish rolling to 9.0mm of hot rolling blank, wherein the final rolling temperature is 313 ℃; the emulsion parameters in the hot rough rolling are as follows: the concentration is 4.0%, the temperature is 45 ℃, the pH value is 7.5, the ash content is 800PPm, and the conductivity is 500 mu s/cm; the emulsion parameters in the hot finish rolling are as follows: the concentration is 7.0 percent, the temperature is 45 ℃, the pH value is 7.5, the ash content is 1000PPm, the conductivity is 800 mu s/cm, the rotating speed of the brush roller is 400 revolutions per minute, the moving frequency is 20 times per minute, and the pressing force is 300N.
Step e: after 2-pass rolling, the first-pass uncoiling tension is 6N/mm, the roller roughness Ra is 0.3 mu m, the kinematic viscosity value at 40 ℃ is 2.2-2.4 mm/s, the oil temperature of rolling oil is controlled between 35 ℃ and 45 ℃, the refractive index of cold rolling oil is controlled to be more than 90%, and the thickness of the cold rolling oil is 4.0mm in one-pass cold rolling.
Step f: heating the blank to 200-220 ℃, preserving heat for 4 hours, carrying out primary oil removal, and carrying out primary intermediate annealing; the primary intermediate annealing temperature is 380 ℃, and the temperature is kept for 20 hours. And placing the material on a material rack for natural cooling after discharging.
Step g: through 4-pass rolling, the first-pass uncoiling tension is 16N/mm, the roller roughness Ra is 0.18 mu m, the kinematic viscosity value at 40 ℃ is 2.2-2.4 mm/s, the oil temperature of the rolling oil is controlled between 35 ℃ and 45 ℃, the refractive index of the cold rolling oil is controlled to be more than 90%, and the secondary cold rolling is carried out to the thickness of 0.67 mm.
Step h: heating the blank to 200-220 ℃, preserving heat for 4 hours, carrying out secondary oil removal, and carrying out secondary intermediate annealing; the temperature of the secondary intermediate annealing is 320 ℃, and the temperature is kept for 20 hours. And placing the material on a material rack for natural cooling after discharging.
Step i: after 2-pass rolling, the first-pass uncoiling tension is 16N/mm, the roller roughness Ra is 0.18 mu m, the kinematic viscosity value at 40 ℃ is 2.2-2.4 mm/s, the oil temperature of rolling oil is controlled between 35 ℃ and 50 ℃, the refractive index of cold rolling oil is controlled to be more than 90%, and the thickness of a finished product is subjected to three-time cold rolling to be 0.4 mm.
Step j: cleaning, pulling and straightening, wherein the uncoiling tension of the pulling and straightening is less than or equal to 800N, and the elongation is controlled at 0.3%.
Example two
A production method of 1100-H14 state aluminum alloy strip for processing high-end cosmetic bottle caps comprises the following steps:
step a: smelting at the temperature of 720 ℃ for 5 h; the smelted aluminum alloy comprises the following components in percentage by mass: si: 0.125%, Fe: 0.381%, Cu: 0.161%, Mn: 0.0038%, Mg: 0.00095%, Ti: 0.031%, other impurities less than or equal to 0.05%, and Al in balance.
Step b: the ingot is cast by adopting a semi-continuous method, wherein the casting temperature of the semi-continuous method ingot is 715 ℃, and the casting speed is 55 mm/min.
Step c: and (3) carrying out homogenization heat treatment on the cast ingot at the temperature of 600 +/-15 ℃ for 12 hours, and cutting the head, the tail and milling the surface.
Step d: heating the cast ingot to 525 ℃, preserving heat for 4 hours, adopting a 1+1 type hot rolling unit, firstly carrying out hot rough rolling, carrying out 17-pass rolling, roughly rolling the cast ingot to 35mm in thickness, then carrying out hot finish rolling to 9.0mm of hot rolling blank, wherein the final rolling temperature is 320 ℃; the emulsion parameters in the hot rough rolling are as follows: the concentration is 4.0%, the temperature is 45 ℃, the pH value is 7.5, the ash content is 800PPm, and the conductivity is 500 mu s/cm; the emulsion parameters in the hot finish rolling are as follows: the concentration is 7.0 percent, the temperature is 45 ℃, the pH value is 7.5, the ash content is 1000PPm, the conductivity is 800 mu s/cm, the rotating speed of the brush roller is 400 revolutions per minute, the moving frequency is 20 times per minute, and the pressing force is 300N.
Step e: after 2-pass rolling, the first-pass uncoiling tension is 6N/mm, the roller roughness Ra is 0.35 μm, the kinematic viscosity value at 40 ℃ is 2.2-2.4 mm/s, the oil temperature of rolling oil is controlled between 35 ℃ and 45 ℃, the refractive index of cold rolling oil is controlled to be more than 90%, and the thickness of the cold rolling oil is 4.0mm in one-pass cold rolling.
Step f: heating the blank to 200-220 ℃, preserving heat for 4 hours, carrying out primary oil removal, and carrying out primary intermediate annealing; the primary intermediate annealing temperature is 400 ℃, and the temperature is kept for 20 hours. And placing the material on a material rack for natural cooling after discharging.
Step g: after 3-pass rolling, the first-pass uncoiling tension is 8N/mm, the roller roughness Ra is 0.20 μm, the kinematic viscosity value at 40 ℃ is 2.2-2.4 mm/s, the oil temperature of rolling oil is controlled between 35 ℃ and 45 ℃, the refractive index of cold rolling oil is controlled to be more than 90%, and the secondary cold rolling is performed to the thickness of 0.83 mm.
Step h: heating the blank to 200-220 ℃, preserving heat for 4 hours, carrying out secondary oil removal, and carrying out secondary intermediate annealing; the temperature of the secondary intermediate annealing is 320 ℃, and the temperature is kept for 20 hours. And placing the material on a material rack for natural cooling after discharging.
Step i: after 2-pass rolling, the first-pass uncoiling tension is 16N/mm, the roller roughness Ra is 0.20 μm, the kinematic viscosity value at 40 ℃ is 2.2-2.4 mm/s, the oil temperature of rolling oil is controlled between 35 ℃ and 50 ℃, the refractive index of cold rolling oil is controlled to be more than 90%, and the thickness of a finished product is subjected to three-time cold rolling to be 0.5 mm.
Step j: cleaning, straightening, wherein the uncoiling tension of straightening is less than or equal to 800N, and the elongation is controlled at 0.4%.
EXAMPLE III
A production method of 1100-H14 state aluminum alloy strip for processing high-end cosmetic bottle caps comprises the following steps:
step a: smelting at 750 ℃ for 5 h; the smelted aluminum alloy comprises the following components in percentage by mass: 0.136%, Fe: 0.417%, Cu: 0.173%, Mn: 0.0042%, Mg: 0.00086%, Ti: 0.026%, less than or equal to 0.05% of other impurities, and Al in balance.
Step b: the ingot is cast by adopting a semi-continuous method, the casting temperature of the semi-continuous method ingot is 710 ℃, and the casting speed is 55 mm/min.
Step c: and (3) carrying out homogenization heat treatment on the cast ingot at the temperature of 600 +/-15 ℃ for 12 hours, and cutting the head, the tail and milling the surface.
Step d: heating the cast ingot to 530 ℃, preserving heat for 4 hours, adopting a 1+1 type hot rolling unit, firstly carrying out hot rough rolling, carrying out 17-pass rolling, roughly rolling the cast ingot to 35mm in thickness, then carrying out hot finish rolling to 9.0mm of hot rolling blank, and setting the finish rolling temperature to 320 ℃; the emulsion parameters in the hot rough rolling are as follows: the concentration is 4.0%, the temperature is 45 ℃, the pH value is 7.5, the ash content is 800PPm, and the conductivity is 500 mu s/cm; the emulsion parameters in the hot finish rolling are as follows: the concentration is 7.0 percent, the temperature is 45 ℃, the pH value is 7.5, the ash content is 1000PPm, the conductivity is 800 mu s/cm, the rotating speed of the brush roller is 400 revolutions per minute, the moving frequency is 20 times per minute, and the pressing force is 300N.
Step e: after 2-pass rolling, the first-pass uncoiling tension is 6N/mm, the roller roughness Ra is 0.4 μm, the kinematic viscosity value at 40 ℃ is 2.2-2.4 mm/s, the oil temperature of rolling oil is controlled between 35 ℃ and 45 ℃, the refractive index of cold rolling oil is controlled to be more than 90%, and the thickness of the cold rolling oil is 4.0mm in one-pass cold rolling.
Step f: heating the blank to 200-220 ℃, preserving heat for 4 hours, carrying out primary oil removal, and carrying out primary intermediate annealing; the temperature of the primary intermediate annealing is 420 ℃, and the temperature is kept for 20 hours. And placing the material on a material rack for natural cooling after discharging.
Step g: after 2-pass rolling, the first-pass uncoiling tension is 8N/mm, the roller roughness Ra is 0.20 μm, the kinematic viscosity value at 40 ℃ is 2.2-2.4 mm/s, the oil temperature of rolling oil is controlled between 35 ℃ and 45 ℃, the refractive index of cold rolling oil is controlled to be more than 90%, and the secondary cold rolling is carried out to the thickness of 1.17 mm.
Step h: heating the blank to 200-220 ℃, preserving heat for 4 hours, carrying out secondary oil removal, and carrying out secondary intermediate annealing; the temperature of the secondary intermediate annealing is 320 ℃, and the temperature is kept for 20 hours. And placing the material on a material rack for natural cooling after discharging.
Step i: after 1-pass rolling, the uncoiling tension is 8N/mm, the roughness Ra of the roller is 0.18 mu m, the kinematic viscosity value at 40 ℃ is 2.2-2.4 mm/s, the oil temperature of the rolling oil is controlled between 35 ℃ and 50 ℃, the refractive index of the cold rolling oil is controlled to be larger than 90%, and the thickness of a finished product is obtained by three-pass cold rolling.
Step j: cleaning, straightening, wherein the uncoiling tension of straightening is less than or equal to 800N, and the elongation is controlled at 0.5%.
The test results of the 1100-H14 temper aluminum alloy strips produced in examples 1-3 are shown in Table 1.
TABLE 1 examination results of 1100-H14 temper aluminum alloy strips produced in examples 1-3
| Examples | Thickness of finished product | Tensile strength | The elongation rate is A50% | Percentage of prepared ears% | Effect of anodic oxidation |
| Example 1 | 0.4mm | 133MPa | 4.5% | 2.4% | First order (you) |
| Practice ofExample 2 | 0.5mm | 131MPa | 5% | 2.5% | First order (you) |
| Example 3 | 0.7mm | 138MPA | 6% | 2.4% | First order (you) |
The above-mentioned embodiments are merely preferred embodiments of the present invention, which are merely illustrative and not restrictive, and it should be understood that other embodiments may be easily made by those skilled in the art by replacing or changing the technical contents disclosed in the specification, and therefore, all changes and modifications that are made on the principle of the present invention should be included in the scope of the claims of the present invention.
Claims (3)
1. A production method of 1100-H14 state aluminum alloy strip for processing high-end cosmetic bottle caps is characterized by comprising the following steps:
step a: smelting at the temperature of 700-750 ℃; the smelted aluminum alloy comprises the following components in percentage by mass: si is more than or equal to 0.05 percent and less than or equal to 0.15 percent, Fe is more than or equal to 0.55 percent and less than or equal to 0.35 percent, Cu is more than or equal to 0.20 percent and less than or equal to 0.10 percent, Mn is less than or equal to 0.02 percent, Mg is less than or equal to 0.05 percent, Ti is less than or equal to 0.04 percent, other impurities are less than or equal to 0.05 percent in total;
step b: ingot casting by adopting a semi-continuous method;
step c: carrying out homogenization heat treatment on the cast ingot at the temperature of 600 +/-15 ℃ for 12-16 h, and cutting the head, the tail and milling the surface;
step d: hot rolling to a hot rolled blank with the thickness of more than 8.0mm, wherein the final rolling temperature is more than 300 ℃; the hot rolling is to heat the cast ingot to 450-530 ℃, keep the temperature for more than 3h, firstly carry out hot rough rolling, and then carry out hot finish rolling to obtain a hot rolling blank with the thickness of more than 8.0 mm; the emulsion parameters in the hot rough rolling are as follows: the concentration is 4.0-6.0%, the temperature is 45-60 ℃, the pH value is 7.5-8.5, the ash content is less than 800PPm, and the conductivity is less than 500 mu s/cm; the emulsion parameters in the hot finish rolling are as follows: the concentration is 7.0-8.0%, the temperature is 45-65 ℃, the pH value is 7.5-8.5, the ash content is less than 1000PPm, the conductivity is less than 800 mus/cm, the rotating speed of a brush roller in hot finish rolling is 400-500 revolutions per minute, the moving frequency is 20-30 times per minute, and the pressing force is 300-400N;
step e: performing 2-pass rolling, and performing primary cold rolling to the thickness of 3.5-4.5 mm; the first pass uncoiling tension in the primary cold rolling is not more than 6N/mm, the reduction rate of each pass is 25-40%, and the roller roughness Ra is 0.3-0.4 μm;
step f: heating the blank to 200-220 ℃, preserving heat for 4-5 hours, carrying out primary oil removal, and carrying out primary intermediate annealing; the primary intermediate annealing temperature is 360-450 ℃, and the temperature is kept for 20-24 hours;
step g: rolling for 2-4 times, reserving the machining amount of 38-42% according to the thickness of a finished product, and performing secondary cold rolling; the first pass uncoiling tension in the secondary cold rolling is not more than 8N/mm, the reduction rate of each pass is 25-45%, and the roller roughness Ra is 0.18-0.22 μm;
step h: heating the blank to 200-220 ℃, preserving heat for 4-5 hours, carrying out secondary oil removal, and carrying out secondary intermediate annealing; the secondary intermediate annealing temperature is 320-360 ℃, and the temperature is kept for 20-24 hours;
step i: rolling for 1-2 times, and cold rolling for three times to the thickness of a finished product below 0.7 mm; the first pass uncoiling tension in the three-pass cold rolling is not more than 16N/mm, the reduction rate of each pass is 20-25%, and the roller roughness Ra is 0.18-0.22 μm;
step j: cleaning and straightening.
2. The production method of the 1100-H14 state aluminum alloy strip for processing the high-end cosmetic bottle caps as claimed in claim 1, wherein the casting temperature of the semi-continuous ingot casting in the step b is 690-730 ℃, and the casting speed is 50-65 mm/min.
3. The production method of the aluminum alloy strip in the state of 1100-H14 for processing the high-end cosmetic bottle cap as recited in claim 1, wherein the uncoiling tension of the withdrawal straightening in the step j is less than or equal to 800N.
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