CN114250390A - Aluminum alloy material for computer keyboard bracket and preparation method thereof - Google Patents
Aluminum alloy material for computer keyboard bracket and preparation method thereof Download PDFInfo
- Publication number
- CN114250390A CN114250390A CN202111402001.5A CN202111402001A CN114250390A CN 114250390 A CN114250390 A CN 114250390A CN 202111402001 A CN202111402001 A CN 202111402001A CN 114250390 A CN114250390 A CN 114250390A
- Authority
- CN
- China
- Prior art keywords
- aluminum alloy
- equal
- alloy material
- computer keyboard
- less
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000956 alloy Substances 0.000 title claims abstract description 46
- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 39
- 238000002360 preparation method Methods 0.000 title abstract description 15
- 239000000463 material Substances 0.000 claims abstract description 24
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 22
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 22
- 238000005266 casting Methods 0.000 claims abstract description 22
- 238000003801 milling Methods 0.000 claims abstract description 19
- 238000000137 annealing Methods 0.000 claims abstract description 16
- 238000005097 cold rolling Methods 0.000 claims abstract description 16
- 238000005098 hot rolling Methods 0.000 claims abstract description 13
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 13
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 12
- 238000003723 Smelting Methods 0.000 claims abstract description 10
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 10
- 239000012535 impurity Substances 0.000 claims abstract description 7
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 5
- 238000004140 cleaning Methods 0.000 claims abstract description 5
- 229910052802 copper Inorganic materials 0.000 claims abstract description 5
- 238000002791 soaking Methods 0.000 claims abstract description 5
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 5
- 238000005520 cutting process Methods 0.000 claims abstract description 4
- 239000004615 ingredient Substances 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 24
- 238000005096 rolling process Methods 0.000 claims description 19
- 239000003795 chemical substances by application Substances 0.000 claims description 14
- 239000011572 manganese Substances 0.000 claims description 14
- 229910052751 metal Inorganic materials 0.000 claims description 14
- 239000002184 metal Substances 0.000 claims description 14
- 239000010936 titanium Substances 0.000 claims description 13
- 239000011777 magnesium Substances 0.000 claims description 11
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 8
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 8
- 239000000126 substance Substances 0.000 claims description 8
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 6
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 239000013078 crystal Substances 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 4
- 229910000952 Be alloy Inorganic materials 0.000 claims description 3
- SOWHJXWFLFBSIK-UHFFFAOYSA-N aluminum beryllium Chemical compound [Be].[Al] SOWHJXWFLFBSIK-UHFFFAOYSA-N 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 3
- 238000005070 sampling Methods 0.000 claims description 3
- 238000004321 preservation Methods 0.000 claims description 2
- 239000010935 stainless steel Substances 0.000 abstract description 6
- 229910001220 stainless steel Inorganic materials 0.000 abstract description 6
- 230000007547 defect Effects 0.000 abstract description 2
- 229910052729 chemical element Inorganic materials 0.000 abstract 1
- 229910045601 alloy Inorganic materials 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 238000005728 strengthening Methods 0.000 description 6
- 238000005452 bending Methods 0.000 description 4
- 239000011888 foil Substances 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 230000003014 reinforcing effect Effects 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 238000005275 alloying Methods 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000009776 industrial production Methods 0.000 description 2
- 230000001502 supplementing effect Effects 0.000 description 2
- 229910018569 Al—Zn—Mg—Cu Inorganic materials 0.000 description 1
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000001192 hot extrusion Methods 0.000 description 1
- 229910000765 intermetallic Inorganic materials 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000011573 trace mineral Substances 0.000 description 1
- 235000013619 trace mineral Nutrition 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
- 238000003466 welding 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D7/00—Casting ingots, e.g. from ferrous metals
- B22D7/005—Casting ingots, e.g. from ferrous metals from non-ferrous metals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
-
- 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
- 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 relates to the technical field of aluminum alloy preparation, in particular to an aluminum alloy material for a computer keyboard bracket and a preparation method thereof, wherein the aluminum alloy material comprises the following chemical elements in percentage by mass: less than or equal to 0.1wt% of Si, less than or equal to 0.2wt% of Fe, less than or equal to 0.05wt% of Cu, Mn: 0.2 to 0.4wt%, Mg: 5.0-6.5 wt%, Cr is less than or equal to 0.1wt%, Zn is less than or equal to 0.1wt%, Ti: 0.01-0.05 wt%, and the balance of aluminum and inevitable impurities, and the preparation method comprises the following specific steps: (1) preparing materials; (2) smelting; (3) adjusting the proportion of the ingredients; (4) casting; (5) soaking; (6) milling a surface; (7) hot rolling; (8) cold rolling; (9) annealing; (10) cleaning, pulling and straightening; (11) cutting a finished product; aiming at the defects of using stainless steel materials as computer keyboard support materials, the invention achieves the purposes of thinning and reducing weight and simultaneously improving the strength and the elongation rate, so that the keyboard hook part is not broken after being bent for three times after being punched and formed.
Description
Technical Field
The invention relates to the technical field of aluminum alloy preparation, in particular to an aluminum alloy material for a computer keyboard bracket and a preparation method thereof.
Background
At present, with the rapid development of electronic 3C products, particularly the computer industry, the competition is fierce, the use requirements of customers are continuously improved, the updating is fast, particularly, most of the existing computer keyboard supports are made of stainless steel foil materials, the weight reduction and the repeatability recycling are not facilitated, and meanwhile, the existing 5052 aluminum alloy cannot meet the requirements in terms of material strength, so that the development of aluminum alloy with higher strength for replacing the stainless steel foil materials has practical requirements.
At present, all high-strength aluminum alloy materials used in high-end computers are imported from foreign countries and are still in the research and development stage at home. The main technical difficulty of the product is high strength and repeated bending performance, and domestic products cannot meet the requirements at present.
Chinese patent: CN112981196A, patent name: an Al-Zn-Mg-Cu aluminum alloy with ultrahigh strength and high toughness and a preparation method thereof are manufactured by adopting a conventional industrial production process: casting → homogenizing → hot extrusion → solution treatment → aging treatment, and the alloy does not contain expensive rare earth elements, and is suitable for large-scale industrial production and application, but the component ratio is as follows: the alloy material for the computer keyboard bracket comprises 8.30-9.50 wt% of Zn, 2.00-2.50 wt% of Mg, 1.30-1.80 wt% of Cu, 0.05-0.15 wt% of Mn, 0.10-0.20 wt% of Cr, 0.10-0.20 wt% of Zr, 0.05-0.10 wt% of Ti, and less than 0.25 wt% of the sum of impurity elements such as Fe, Si and the like, and the balance of Al, wherein the contents of Mn and Mg are insufficient, Mg plays a reinforcing role in the alloy material and has an obvious reinforcing effect, and Mn plays a certain supplementary reinforcing role, so that the final elongation rate is 9.2 +/-0.1%, and the requirement of the elongation rate of the existing aluminum alloy material for the computer keyboard bracket is not met, and therefore, an aluminum alloy material for the computer keyboard bracket and a preparation method thereof need to be designed to solve the problems.
Disclosure of Invention
The invention aims to provide an aluminum alloy material for a computer keyboard support and a preparation method thereof, aiming at the defects of using a stainless steel material for the computer keyboard support, the aluminum alloy material achieves the purposes of thinning and reducing weight and improving the strength and the elongation rate, so that after punch forming, a keyboard hook part is bent for three times without breaking.
The invention relates to an aluminum alloy material for a computer keyboard bracket, which comprises the following chemical components in percentage by mass: less than or equal to 0.1wt% of Si, less than or equal to 0.2wt% of Fe, less than or equal to 0.05wt% of Cu, Mn: 0.2 to 0.4wt%, Mg: 5.0-6.5 wt%, Cr is less than or equal to 0.1wt%, Zn is less than or equal to 0.1wt%, Ti: 0.01 to 0.05wt%, and the balance of aluminum and inevitable impurities.
The invention is further improved in that: the preparation method of the aluminum alloy material for the computer keyboard support as claimed in claim 1, comprising the following steps:
(1) preparing materials: the method comprises the following steps of determining the feeding amount by adopting aluminum ingots, manganese agents, magnesium metal ingots, titanium agents and rare earth elements according to internal control chemical components and the specification and the number of cast ingots;
(2) smelting: after the calculation steps are completed, adding an aluminum ingot and a titanium agent into a smelting furnace, slagging off after the aluminum ingot and the titanium agent are completely melted, then adding a manganese agent, a metal magnesium ingot and an aluminum-beryllium alloy, uniformly stirring, and then sampling and analyzing;
(3) adjusting the proportion of ingredients: adjusting the components to make all the components reach a control range;
(4) casting: casting the smelted substance into an ingot;
(5) soaking the raw materials: carrying out uniform post-treatment on the cast ingot;
(6) milling a surface: milling the surface of the cast ingot after the uniform post-treatment;
(7) hot rolling: carrying out hot rough rolling and hot finish rolling on the cast ingot after surface milling to obtain a coiled material;
(8) cold rolling: transferring the hot-rolled aluminum coil to a cold rolling mill at room temperature, performing cold rolling according to set cold rolling passes, and controlling the plate shape until the final thickness is obtained;
(9) annealing: annealing the cold-rolled coil to obtain a finished coil meeting the performance requirement;
(10) cleaning, pulling and straightening: cleaning and straightening the finished annealed coiled material to ensure that the unevenness of the plate shape is less than or equal to 0.5 mm;
(11) and (4) cutting a finished product: the obtained coiled material is trimmed or stripped into required specifications by a slitter.
The invention is further improved in that: in the step (1), the purity of the aluminum ingot is 99.7 percent
The invention is further improved in that: in the step (2), the smelting temperature is 730-750 ℃.
The invention is further improved in that: in the step (4), the casting temperature is 660-700 ℃, the casting speed is 40-50mm/min, the water pressure is 0.1-0.2Mpa, and the water temperature is less than or equal to 30 ℃ during casting.
The invention is further improved in that: in the step (6), when the surface is milled, the milling amount of the front surface of the cast ingot is 5-15mm per surface, and the milling amount of the side surface is 5-10mm per surface.
The invention is further improved in that: in the step (7), in the hot rolling step, the cast ingot after surface milling is rolled into an intermediate blank with the thickness of 18mm through hot rough rolling, and then is rolled into a hot rolled coil with the thickness of 5mm through hot finish rolling, wherein the finish rolling temperature is 280-320 ℃.
The invention is further improved in that: in the step (7), in the hot rolling step, in order to ensure that the crystal grains of the finished product are less than or equal to 40 μm, the total reduction rate of each rolling process is required to be ensured to be more than 50%.
The invention is further improved in that: in the step (8), in the cold rolling step, the hot-rolled aluminum coil is rolled to a final thickness of 0.2-0.5 mm.
The invention is further improved in that: in the step (9), in the annealing step, high temperature and high speed are adopted for intermediate annealing, the metal temperature is controlled to be 310-330 ℃, the heat preservation time is 1 hour, the total annealing time is controlled to be 6-8 hours, the finished product annealing is low temperature, the final metal temperature error is within +/-1 ℃, and the uniformity of the performance of the whole roll of material is ensured.
The invention has the beneficial effects that:
in addition, trace rare earth metal is added into the alloy material, so that the alloy material has remarkable effects on grain refinement and alloying of the alloy, and has specific effects on improving the strength, ductility and bending of the material;
mg plays a role in strengthening in the alloy material, the strengthening effect is obvious, Mn plays a role in supplementing and strengthening to a certain extent, the performance of the aluminum alloy is greatly improved by controlling the components and the mass percent thereof, the tensile strength is 340-350Mpa, the elongation is more than or equal to 16 percent, the values of the components and the elongation are the most suitable values for the computer keyboard manufacturing material, the most important point is that the components and the elongation are not broken after being bent for 3 times in all directions, 90 degrees and 0T, and the components and the elongation can be used as the computer keyboard bracket material instead of a stainless steel foil.
On the basis of optimizing alloy components, the invention obtains finer and more uniform original crystal grain size through the optimization of a casting process, combines uniform post-heat treatment and hot rolling to respectively perform fusing spheroidization and crushing on intermetallic compounds, and large cold rolling reduction rate, reasonable annealing process and the like to obtain an aluminum alloy strip with fine and uniform crystal grains and compound size, achieves the purposes of thinning and reducing weight and improving elongation, ensures that a keyboard hook part is not broken after being punched and formed by three times of bending, and meets the use requirement of the aluminum alloy material for the computer keyboard support at present.
Detailed Description
In order to enhance the understanding of the present invention, the present invention will be described in further detail with reference to the following examples, which are provided for the purpose of illustration only and are not intended to limit the scope of the present invention.
The technical solution of the embodiment is as follows: the embodiment provides an aluminum alloy material for a computer keyboard bracket and a preparation method thereof, wherein the aluminum alloy material comprises the following chemical components in percentage by mass: less than or equal to 0.1wt% of Si, less than or equal to 0.2wt% of Fe, less than or equal to 0.05wt% of Cu, Mn: 0.2 to 0.4wt%, Mg: 5.0-6.5 wt%, Cr is less than or equal to 0.1wt%, Zn is less than or equal to 0.1wt%, Ti: 0.01-0.05 wt%, and the balance of aluminum and inevitable impurities, and Al-RE rare earth elements are added for obtaining a casting structure with fine grains and providing conditions for subsequent rolling processing and finished product performance.
In the embodiment, the alloy material is easy to break during rolling, the fracture behavior of the alloy is obviously influenced by the trace element Na, the hot rolling plasticity of the alloy is improved when the Na content is low, the alloy is hardly broken during the hot rolling process, and the elongation of the subsequent finished product is influenced, wherein the Na content is not higher than 0.0001 wt%;
the alloy material is added with trace rare earth elements, has remarkable effects on grain refinement and alloying of the alloy, and has specific effects on improving the strength, ductility and bending of the material; mg plays a role in strengthening the alloy material, and the strengthening effect is obvious; mn plays a certain role in supplementing and strengthening; fe and Si are present as impurities, and Fe/Si in the alloy should be controlled to be in a range of about 2: 1 or so, which has an effect on the subsequent stamping; the performance of the aluminum alloy is greatly improved by controlling the components and the mass percentage thereof, and the aluminum alloy can replace stainless steel foil and can be applied to 3C products.
In order to enable the preparation process to be feasible and the quality to be stable and enable the aluminum alloy material to achieve corresponding performance, the embodiment also provides the aluminum alloy material for the computer keyboard support and the preparation method thereof, and the preparation method specifically comprises the following steps:
(1) preparing materials: the method comprises the following steps of determining the feeding amount according to internal control chemical components, specifications and quantity of cast ingots by adopting 99.7% of aluminum ingots, manganese agents, metal magnesium ingots, titanium agents and rare earth elements;
(2) smelting: after the calculation steps are completed, adding an aluminum ingot and a titanium agent into a smelting furnace, when the metal is completely molten and the smelting temperature is 730-750 ℃, slagging off is started when the metal temperature reaches 730-750 ℃, then sequentially adding a manganese agent, a metal magnesium ingot and an aluminum-beryllium alloy, uniformly stirring, and then sampling and analyzing;
(3) adjusting the proportion of ingredients: adjusting the components to make all the components reach a control range, namely: less than or equal to 0.1wt% of Si, less than or equal to 0.2wt% of Fe, less than or equal to 0.05wt% of Cu, Mn: 0.2 to 0.4wt%, Mg: 5.0-6.5 wt%, Cr is less than or equal to 0.1wt%, Zn is less than or equal to 0.1wt%, Ti: 0.01-0.05 wt% of aluminum and inevitable impurities as the balance, refining in a furnace and slagging off, adding Al-RE rare earth elements, stirring for 10-20min, and controlling the metal temperature to reach a reasonable casting temperature;
(4) casting: when the metal temperature reaches reasonable casting temperature, casting is started, the metal flows out from the furnace in the casting process, is conveyed through a launder, is subjected to online degassing, online grain refinement and online filtration, then enters a casting mold for molding, and is cast into an ingot with required specification by adopting a semi-continuous casting machine, wherein the casting temperature is 660-700 ℃, the casting speed is 40-50mm/min, the water pressure is 0.1-0.2Mpa, and the water temperature is less than or equal to 30 ℃. (ii) a
(5) Soaking the raw materials: cutting off the bottom of the ingot by 200mm, homogenizing in a soaking pit, and naturally cooling to normal temperature after discharging;
(6) milling a surface: milling the surface of the cast ingot after the uniform post-treatment, and milling the surface and the side surface by a milling machine, wherein the milling amount of the front surface of the cast ingot is 5-15mm per surface, and the milling amount of the side surface is 5-10mm per surface;
(7) hot rolling: heating the milled ingot in an ingot heating furnace according to a set heating curve, preserving the heat for 4-5 hours after the metal temperature reaches a set temperature, discharging the ingot from the furnace for hot rolling, firstly rolling the ingot to 18mm by a hot roughing mill, conveying the ingot to a hot finishing mill through a roller way, and rolling the ingot into a hot rolled coil of 5mm according to a proper rolling pass, wherein the final rolling temperature is 280-320 ℃; the head and the tail of the coil are firmly welded by argon arc welding, and are naturally cold-rolled to room temperature, and in the step of hot rolling, in order to ensure that the crystal grains of a finished product are less than or equal to 40 mu m, the total reduction rate of each rolling process is required to be ensured to be more than 50 percent;
(8) cold rolling: transferring the hot-rolled aluminum coil to a cold rolling mill at room temperature, performing cold rolling according to set cold rolling passes, and controlling the plate shape until the final thickness of the aluminum coil is 0.3-0.4 mm;
(9) annealing: the aluminum coil is annealed by a suitable annealing process to achieve the desired properties, with the final delivery state of the material being the H34 state.
After detection, the mechanical property parameter comparison table of the elongation percentage of the aluminum alloy material for the computer keyboard bracket of the embodiment and the comparative example (comparison document) is as follows:
the test results are summarized:
as can be seen from the comparison table of the mechanical property parameters of the aluminum alloy material for the computer keyboard support in the embodiment 1 and the comparative example, the mechanical property Ts of the material of the aluminum alloy material for the computer keyboard support product prepared by the invention is as follows: the elongation is more than or equal to 16% under the condition of 340-.
It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The utility model provides an aluminum alloy material for computer keyboard support which characterized in that: the chemical components and the mass percentage thereof are as follows: less than or equal to 0.1wt% of Si, less than or equal to 0.2wt% of Fe, less than or equal to 0.05wt% of Cu, Mn: 0.2 to 0.4wt%, Mg: 5.0-6.5 wt%, Cr is less than or equal to 0.1wt%, Zn is less than or equal to 0.1wt%, Ti: 0.01 to 0.05wt%, and the balance of aluminum and inevitable impurities.
2. The method for preparing an aluminum alloy material for a computer keyboard bracket as claimed in claim 1, wherein the method comprises the following steps: the method specifically comprises the following steps:
(1) preparing materials: the method comprises the following steps of determining the feeding amount by adopting aluminum ingots, manganese agents, magnesium metal ingots, titanium agents and rare earth elements according to internal control chemical components and the specification and the number of cast ingots;
(2) smelting: after the calculation steps are completed, adding an aluminum ingot and a titanium agent into a smelting furnace, slagging off after the aluminum ingot and the titanium agent are completely melted, then adding a manganese agent, a metal magnesium ingot and an aluminum-beryllium alloy, uniformly stirring, and then sampling and analyzing;
(3) adjusting the proportion of ingredients: adjusting the components to make all the components reach a control range;
(4) casting: casting the smelted substance into an ingot;
(5) soaking the raw materials: carrying out uniform post-treatment on the cast ingot;
(6) milling a surface: milling the surface of the cast ingot after the uniform post-treatment;
(7) hot rolling: carrying out hot rough rolling and hot finish rolling on the cast ingot after surface milling to obtain a coiled material;
(8) cold rolling: transferring the hot-rolled aluminum coil to a cold rolling mill at room temperature, performing cold rolling according to set cold rolling passes, and controlling the plate shape until the final thickness is obtained;
(9) annealing: annealing the cold-rolled coil to obtain a finished coil meeting the performance requirement;
(10) cleaning, pulling and straightening: cleaning and straightening the finished annealed coiled material to ensure that the unevenness of the plate shape is less than or equal to 0.5 mm;
(11) and (4) cutting a finished product: the obtained coiled material is trimmed or stripped into required specifications by a slitter.
3. The method for preparing the aluminum alloy material for the computer keyboard bracket according to claim 2, wherein the method comprises the following steps: in the step (1), the purity of the aluminum ingot is 99.7%.
4. The method for preparing the aluminum alloy material for the computer keyboard bracket according to claim 2, wherein the method comprises the following steps: in the step (2), the smelting temperature is 730-750 ℃.
5. The method for preparing the aluminum alloy material for the computer keyboard bracket according to claim 2, wherein the method comprises the following steps: in the step (4), the casting temperature is 660-700 ℃, the casting speed is 40-50mm/min, the water pressure is 0.1-0.2Mpa, and the water temperature is less than or equal to 30 ℃ during casting.
6. The method for preparing the aluminum alloy material for the computer keyboard bracket according to claim 2, wherein the method comprises the following steps: in the step (6), when the surface is milled, the milling amount of the front surface of the cast ingot is 5-15mm per surface, and the milling amount of the side surface is 5-10mm per surface.
7. The method for preparing the aluminum alloy material for the computer keyboard bracket according to claim 2, wherein the method comprises the following steps: in the step (7), in the hot rolling step, the cast ingot after surface milling is rolled into an intermediate blank with the thickness of 18mm through hot rough rolling, and then is rolled into a hot rolled coil with the thickness of 5mm through hot finish rolling, wherein the finish rolling temperature is 280-320 ℃.
8. The method for preparing the aluminum alloy material for the computer keyboard bracket according to claim 2, wherein the method comprises the following steps: in the step (7), in the hot rolling step, in order to ensure that the crystal grains of the finished product are less than or equal to 40 μm, the total reduction rate of each rolling process is required to be ensured to be more than 50%.
9. The method for preparing an aluminum alloy material for a computer keyboard bracket according to claim 8, wherein the method comprises the following steps: in the step (8), in the cold rolling step, the hot-rolled aluminum coil is rolled to a final thickness of 0.2-0.5 mm.
10. The method for preparing the aluminum alloy material for the computer keyboard bracket according to claim 2, wherein the method comprises the following steps: in the step (9), in the annealing step, high temperature and high speed are adopted for intermediate annealing, the metal temperature is controlled to be 310-330 ℃, the heat preservation time is 1 hour, the total annealing time is controlled to be 6-8 hours, the finished product annealing is low temperature, the final metal temperature error is within +/-1 ℃, and the uniformity of the performance of the whole roll of material is ensured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111402001.5A CN114250390A (en) | 2021-11-24 | 2021-11-24 | Aluminum alloy material for computer keyboard bracket and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111402001.5A CN114250390A (en) | 2021-11-24 | 2021-11-24 | Aluminum alloy material for computer keyboard bracket and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114250390A true CN114250390A (en) | 2022-03-29 |
Family
ID=80793131
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111402001.5A Pending CN114250390A (en) | 2021-11-24 | 2021-11-24 | Aluminum alloy material for computer keyboard bracket and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114250390A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104294113A (en) * | 2013-07-16 | 2015-01-21 | 大力神铝业股份有限公司 | Method for manufacturing aluminium alloy sheet for automobile fuel tank |
| CN107338376A (en) * | 2017-07-11 | 2017-11-10 | 中铝瑞闽股份有限公司 | A kind of preparation method of aluminium alloy compartment sheet material |
| CN107475583A (en) * | 2017-08-18 | 2017-12-15 | 中铝瑞闽股份有限公司 | Plate aluminium alloy strips and its manufacture method in a kind of high intensity mobile phone |
| WO2019219453A1 (en) * | 2018-05-18 | 2019-11-21 | Aleris Rolled Products Germany Gmbh | Method of manufacturing an al-mg-mn alloy plate product |
-
2021
- 2021-11-24 CN CN202111402001.5A patent/CN114250390A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104294113A (en) * | 2013-07-16 | 2015-01-21 | 大力神铝业股份有限公司 | Method for manufacturing aluminium alloy sheet for automobile fuel tank |
| CN107338376A (en) * | 2017-07-11 | 2017-11-10 | 中铝瑞闽股份有限公司 | A kind of preparation method of aluminium alloy compartment sheet material |
| CN107475583A (en) * | 2017-08-18 | 2017-12-15 | 中铝瑞闽股份有限公司 | Plate aluminium alloy strips and its manufacture method in a kind of high intensity mobile phone |
| WO2019219453A1 (en) * | 2018-05-18 | 2019-11-21 | Aleris Rolled Products Germany Gmbh | Method of manufacturing an al-mg-mn alloy plate product |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107299262B (en) | A kind of 3XXX line aluminium alloy that Si content is high and its manufacturing method | |
| CN107475583A (en) | Plate aluminium alloy strips and its manufacture method in a kind of high intensity mobile phone | |
| JPWO2005056859A1 (en) | Method for producing Al-Mg-Si alloy plate excellent in bake hardness and hemmability | |
| CN108531790A (en) | A kind of 6 line aluminium alloy band of high intensity high heat conductance and preparation method thereof | |
| CN111304493B (en) | Superstrong high-plasticity titanium alloy and preparation method thereof | |
| CN101935786A (en) | Stabilizing processing method of 5052 aluminium alloy | |
| CN110042285B (en) | High-strength aluminum-magnesium alloy wire for rivet and preparation method thereof | |
| CN107604222A (en) | It is a kind of can ageing strengthening Al Mg systems alloy and preparation method thereof | |
| CN108754193A (en) | A kind of high-strength corrosion-resisting collecting pipe material and preparation method thereof | |
| CN114262827A (en) | Aluminum alloy material with crater for mobile phone back plate and preparation method of aluminum alloy material | |
| CN114558967A (en) | Preparation method of aluminum alloy oversized ring forging | |
| EP1826284A1 (en) | Case made of magnesium alloy | |
| CN113862533B (en) | Aluminum alloy and preparation method thereof | |
| CN112322945A (en) | Aluminum alloy material for 3C product and preparation method thereof | |
| JPH11293363A (en) | Manufacture of aluminum alloy for automobile member, and automobile member obtained thereby | |
| CN115679164B (en) | 5xxx aluminum alloys, and methods of making the same | |
| CN113528903A (en) | 5052 aluminum alloy with high bending performance and preparation method thereof | |
| JP5050577B2 (en) | Aluminum alloy plate for forming process excellent in deep drawability and bake-proof softening property and method for producing the same | |
| JP6719219B2 (en) | High strength aluminum alloy sheet excellent in formability and method for producing the same | |
| CN109554591B (en) | 5-series alloy plate strip for card support and manufacturing method thereof | |
| CN115141947B (en) | 5000-series aluminum alloy slab ingot with high-proportion scrap added, preparation method thereof and aluminum product | |
| JP2001032031A (en) | Aluminum alloy sheet for structural material, excellent in stress corrosion cracking resistance | |
| CN114250390A (en) | Aluminum alloy material for computer keyboard bracket and preparation method thereof | |
| JP3763234B2 (en) | Method for producing high-strength, high-conductivity, high-heat-resistant copper-based alloy | |
| WO2002020862A2 (en) | Aluminum free cutting alloys, recycling process for the manufacture thereof and their use |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220329 |