CN115679164B - 5xxx aluminum alloys, and methods of making the same - Google Patents
5xxx aluminum alloys, and methods of making the same Download PDFInfo
- Publication number
- CN115679164B CN115679164B CN202211475953.4A CN202211475953A CN115679164B CN 115679164 B CN115679164 B CN 115679164B CN 202211475953 A CN202211475953 A CN 202211475953A CN 115679164 B CN115679164 B CN 115679164B
- Authority
- CN
- China
- Prior art keywords
- percent
- rolling
- casting
- aluminum alloy
- equal
- 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.)
- Active
Links
- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 53
- 238000000034 method Methods 0.000 title claims description 69
- 238000005096 rolling process Methods 0.000 claims abstract description 65
- 238000005266 casting Methods 0.000 claims abstract description 51
- 239000000956 alloy Substances 0.000 claims abstract description 35
- 238000000137 annealing Methods 0.000 claims abstract description 34
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 30
- 238000007670 refining Methods 0.000 claims abstract description 29
- 238000007790 scraping Methods 0.000 claims abstract description 28
- 238000009749 continuous casting Methods 0.000 claims abstract description 25
- 238000010438 heat treatment Methods 0.000 claims abstract description 23
- 239000002994 raw material Substances 0.000 claims abstract description 13
- 239000012535 impurity Substances 0.000 claims abstract description 9
- 238000004519 manufacturing process Methods 0.000 claims description 13
- 238000010622 cold drawing Methods 0.000 claims description 7
- 230000006698 induction Effects 0.000 claims description 7
- 229910052748 manganese Inorganic materials 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 229910052804 chromium Inorganic materials 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 5
- 229910052742 iron Inorganic materials 0.000 claims description 5
- 229910052725 zinc Inorganic materials 0.000 claims description 5
- 238000005098 hot rolling Methods 0.000 claims description 4
- 238000011084 recovery Methods 0.000 claims description 4
- 238000005192 partition Methods 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 abstract description 14
- 238000010924 continuous production Methods 0.000 abstract description 3
- 238000001556 precipitation Methods 0.000 abstract description 3
- 238000005457 optimization Methods 0.000 abstract 1
- 239000000203 mixture Substances 0.000 description 33
- 229910052782 aluminium Inorganic materials 0.000 description 16
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 16
- 238000009472 formulation Methods 0.000 description 13
- 239000000463 material Substances 0.000 description 9
- 238000004321 preservation Methods 0.000 description 9
- 238000003723 Smelting Methods 0.000 description 8
- 239000007788 liquid Substances 0.000 description 8
- 238000005260 corrosion Methods 0.000 description 6
- 230000007797 corrosion Effects 0.000 description 6
- 238000005336 cracking Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 238000011049 filling Methods 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000010587 phase diagram Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000005242 forging Methods 0.000 description 2
- 229910000765 intermetallic Inorganic materials 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004886 process control Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000005204 segregation Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000005275 alloying Methods 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000005496 eutectics Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 150000002736 metal compounds Chemical class 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000005482 strain hardening Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000003887 surface segregation Methods 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
Landscapes
- Continuous Casting (AREA)
- Metal Rolling (AREA)
Abstract
The application provides a 5xxx aluminum alloy and a preparation method thereof. The preparation method comprises the following steps: alloy raw materials are prepared according to the following proportion: the raw materials comprise the following components in percentage by weight: 3.5 to 5.0wt.% of Mg,0.08 to 0.5wt.% of Mn,0.05 to 0.5wt.% of Cu,0.15 to 0.2wt.% of Cr, less than or equal to 0.35wt.% of Fe, less than or equal to 0.3wt.% of Si, less than or equal to 0.25wt.% of Zn, less than or equal to 0.1wt.% of Ti, less than or equal to 0.15wt.% of impurity content, and the balance of Al; and refining, continuously casting, scraping a casting blank, continuously rolling, heating a rod, annealing and drawing the raw materials in sequence to obtain the 5xxx aluminum alloy. The precipitation of a coarse second phase is inhibited by the combination of component optimization and continuous casting and rolling processes; the surface quality, continuous production and forgeability of the casting blank and the strength of the wire rod are improved through scraping of the casting blank.
Description
Technical Field
The application relates to the field of aluminum alloy preparation, in particular to a 5xxx aluminum alloy and a preparation method thereof.
Background
The aluminum alloy fastener has a series of excellent characteristics of light weight, high specific strength, good corrosion resistance, good processability, extremely high recycling property, recycling property and the like, and is widely applied to the field of automobiles. Aluminum raw materials cannot meet the requirements of high strength fasteners due to low strength. In the cold heading process, the aluminum material often causes the problems of cold heading cracking and the like due to insufficient plasticity, uneven deformation and the like, and the development of the aluminum alloy automobile fastener is far delayed from that of the automobile industry.
The production of high Mg content 5xxx series rivet wires is typically done by extrusion-drawing and continuous casting-rolling-drawing. The extrusion-drawing method has long production flow and high cost; the continuous casting, rolling and drawing method has high productivity and efficiency, but the product has larger fluctuation and poor forgeability (low plasticity) of the wire rod.
The prior document (CN 104775060B) provides a production and heat treatment method of an aluminum alloy continuous casting continuous rolling blank, and the 5052 material prepared by the method has tensile strength not less than 300MPa, but has an elongation of only 3 percent, and is difficult to meet the requirement of subsequent deformation processing.
Another prior document (CN 104485152 a) provides an aluminum alloy wire and a production process thereof, wherein the aluminum wire produced by adopting the continuous casting and rolling process has higher tensile strength, but plasticity is 3%, and the market demand is difficult to meet. The 5xxx alloy with higher Mg content is easy to generate segregation in the casting process, and coarse second phases and the like cause poor uniformity of products and surface bright lines in cold heading; the annealing process is improper, so that the grains are large in size, nonuniform, and the like, and are easy to wrinkle and crack during subsequent forging. In summary, the current production process conditions of 5xxx wire rods are difficult to eliminate component non-uniformity in the wire rod, and have poor forgeability, and are difficult to combine performance and cost.
Disclosure of Invention
The application mainly aims to provide a 5xxx aluminum alloy and a preparation method thereof, which are used for solving the problems that the component non-uniformity in wires is difficult to eliminate, the forgeability is poor, and the performance and the cost are difficult to be simultaneously considered in the existing preparation method of the aluminum alloy.
To achieve the above object, in one aspect, the present application provides a 5xxx aluminum alloy, the method of manufacturing the 5xxx aluminum alloy including: alloy raw materials are prepared according to the following proportion: the raw materials comprise the following components in percentage by weight: 3.5 to 5.0wt.% of Mg,0.08 to 0.5wt.% of Mn,0.05 to 0.5wt.% of Cu,0.15 to 0.2wt.% of Cr, less than or equal to 0.35wt.% of Fe, less than or equal to 0.3wt.% of Si, less than or equal to 0.25wt.% of Zn, less than or equal to 0.1wt.% of Ti, less than or equal to 0.15wt.% of impurity content, and the balance of Al; and refining, continuously casting, scraping a casting blank, continuously rolling, heating a rod, annealing and drawing the alloy raw materials to obtain the 5xxx aluminum alloy.
Further, the casting blank scraping process comprises: scraping the casting blank obtained in the continuous casting process, wherein the thickness of the scraping process is 0.5-1.0 mm.
Further, the continuous rolling process includes: heating a product obtained in the casting blank scraping process to 450-500 ℃ through induction heating, and then rolling for multiple times, wherein the hot finish rolling temperature is 320-380 ℃; preferably, the continuous rolling process includes a rough rolling and a finishing rolling process, wherein the rolling speed is 2.2 to 2.5m/s.
Further, the temperature of the rod heat recovery process is 280-350 ℃, and the diameter of the rod is 9-11 mm.
Further, the annealing process includes: and heating the wire rod obtained in the rod hot-collecting process to 400-500 ℃ at the speed of 2-5 ℃/min for 2-8 h.
Further, the drawing process includes: and cold-drawing the annealed hot rolled rod to a diameter of 1.5-6 mm, and then performing intermediate annealing.
Further, the temperature of the intermediate annealing is 400-500 ℃ and the time is 1-2 h.
Further, the refining process is two refining processes, wherein the temperature of the first refining process is 710-730 ℃, and the atmosphere is Ar and Cl 2 Is a mixed gas of (1); the temperature of the second refining process is 720-750 ℃, and the atmosphere is Ar and Cl 2 Is a mixed gas of (a) and (b).
Further, the continuous casting process includes: and (3) continuously casting by adopting a casting machine to obtain a casting blank, and automatically controlling the water pressure by adopting a partition in the continuous casting process.
Another aspect of the application also provides a 5xxx aluminum alloy, the 5xxx aluminum alloy manufactured using the above manufacturing method.
By applying the technical scheme of the application, the precipitation of a coarse second phase is inhibited by optimizing alloy components and simultaneously combining process control such as continuous casting and rolling; the surface quality of the 5xxx aluminum alloy is improved through casting blank scraping, so that the continuous production and the forgeability of the 5xxx aluminum alloy are improved, the strength of the wire rod is improved, and the comprehensive performance of the wire rod is superior to that of other corresponding 5 series aluminum alloys in the current industry.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:
FIG. 1 is a metal view of a 5xxx aluminum alloy prepared in example 1;
FIG. 2 is a metal phase diagram of the aluminum alloy prepared in comparative example 1.
Detailed Description
It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The present application will be described in detail with reference to examples.
As described in the background art, the existing preparation method of the aluminum alloy has the problems that the non-uniformity of components in wires is difficult to eliminate, the forgeability is poor, and the performance and the cost are difficult to be simultaneously achieved. In order to solve the technical problems, the application provides a preparation method of a 5xxx aluminum alloy, which comprises the following steps: alloy raw materials are prepared according to the following proportion: the raw materials comprise the following components in percentage by weight: 3.5 to 5.0wt.% of Mg,0.08 to 0.5wt.% of Mn,0.05 to 0.5wt.% of Cu,0.15 to 0.2wt.% of Cr, less than or equal to 0.35wt.% of Fe, less than or equal to 0.3wt.% of Si, less than or equal to 0.25wt.% of Zn, less than or equal to 0.1wt.% of Ti, less than or equal to 0.15wt.% of impurity content, and the balance of Al; and refining, continuously casting, scraping a casting blank, continuously rolling, heating a rod, annealing and drawing the alloy raw materials to obtain the 5xxx aluminum alloy.
Mg and Mn are main strengthening elements. The alloy strength level of the alloy is controlled by the total amount of Mg element. The content of Mg element is increased, the alloy strength is increased, the work hardening capacity is improved, the strain concentration is avoided, the forming is more facilitated, but the high Mg content can increase the melt viscosity, and the casting difficulty is increased. Mn mainly plays roles of inhibiting recrystallization and stabilizing a sub-crystalline structure in the alloy, so that the strength of the material is improved, the toughness and the corrosion resistance are improved, but too high Mn content can form too many coarse intermetallic compounds in the casting process, and the castability, the formability and the toughness of the material are seriously reduced, so that the Mn content is not more than 0.5wt percent and is 0.08 to 0.5wt percent; cu is beneficial for increasing strength, but not more than 0.5wt%.
Cr can reduce the influence of Fe element on corrosion resistance, improve the strength of a base metal and a welding line, reduce the hot cracking tendency of welding, but slightly reduce the plasticity of the alloy. Research shows that the addition of Mn and Cr elements can raise the elastic modulus and hardening index of alloy and thus improve the stress corrosion resistance of alloy. However, when the Cr content is too high, coarse metal compounds are formed with other alloying elements or impurities, and the formability and fracture toughness of the alloy are lowered, so that the Cr content is not more than 0.25wt.%, and is 0.15 to 0.2wt.%.
Fe is an impurity element, and when the Fe content is 0.35wt.% or less, the effect on alloy performance is not great. However, when the Fe content exceeds 0.35wt.%, coarse Fe-containing phases are easily formed, and the elongation to alloy and the slow stress corrosion performance are disadvantageous, and it is necessary to control the content to 0.35wt.% or less.
In the preparation method, the precipitation of a coarse second phase is inhibited by optimizing alloy components and simultaneously combining process control such as continuous casting and rolling; the surface quality of the 5xxx aluminum alloy is improved through casting blank scraping, so that the continuous production and the forgeability of the 5xxx aluminum alloy are improved, the strength of the wire rod is improved, and the comprehensive performance of the wire rod is superior to that of other corresponding 5 series aluminum alloys in the current industry.
The surface quality of the 5xxx aluminum alloy manufactured later is improved by a casting blank scraping process. In a preferred embodiment, the casting billet scraping process comprises: scraping the casting blank obtained in the continuous casting process, wherein the thickness of the scraping process is 0.5-1.0 mm. Limiting the shaved thickness to the above-described ranges facilitates further improving the flatness of the 5xxx aluminum alloy surface and the uniformity of the alloy, thereby facilitating further improving the forgeability of the 5xxx aluminum alloy.
The lower initial rolling temperature can reduce alloyThe hot processing performance is easy to cause cracking, edge cracking and other phenomena in the rolling process; too low a finishing temperature tends to precipitate a large amount of beta-phase and coarse Mg in the structure 2 Si is unfavorable for the subsequent lifting of the forgeability of the wire rod. In a preferred embodiment, the continuous rolling process comprises: and (3) heating the product obtained in the casting blank scraping process to 450-500 ℃ through induction heating, and then carrying out rolling for multiple times, wherein the hot finishing rolling temperature is 320-380 ℃. The hot rolling temperature and the hot finishing temperature include, but are not limited to, the above ranges, and limiting the above ranges is advantageous for further improving the deformation process and the subsequent formability thereof, and further improving the cold heading deformation thereof and the like.
The rolling speed has an effect on the cold heading deflection and wrought properties of the subsequently manufactured 5xxx aluminum alloys, and in order to further enhance the cold heading deflection and wrought properties thereof, the continuous rolling process preferably includes rough rolling and finish rolling processes, wherein the rolling speed is in the range of 2.2 to 2.5m/s.
In a preferred embodiment, the temperature of the heat recovery rod process is 280-350 ℃ and the diameter of the rod is 9-11 mm. The temperature of the heat recovery rod and the diameter of the rod include, but are not limited to, the above ranges, and limiting them to the above ranges is advantageous for further improving the tensile strength and elongation thereof.
In a preferred embodiment, the annealing process comprises: and heating the wire rod obtained in the rod hot-collecting process to 400-500 ℃ at the speed of 2-5 ℃/min for 2-8 h. By annealing the hot rolled wire rod at a higher temperature for a relatively longer time, uniformity of alloy properties can be effectively improved, bright lines on the surface can be eliminated, forgeability of the alloy can be improved, and grain size can be refined.
In order to further improve the forgeability and grain size thereof, preferably, the drawing process includes: and cold-drawing the annealed hot rolled rod to a diameter of 1.5-6 mm, and then performing intermediate annealing. More preferably, the intermediate annealing is performed at a temperature of 400 to 500 ℃ for a time of 1 to 2 hours.
In a preferred embodiment, secondary refining is employed via the refining process. The refining process is two refining processes, wherein the temperature of the first refining process is 710-730 ℃, and the atmosphere is Ar and Cl 2 Is a mixture of (3)Mixing gas; the temperature of the second refining process is 720-750 ℃, and the atmosphere is Ar and Cl 2 Is a mixed gas of (a) and (b). Slag skimming after refining. The refining process is beneficial to further reducing the content of impurity elements, so that the comprehensive properties of elongation, corrosion resistance, toughness and the like of the subsequently prepared aluminum alloy are improved.
In a preferred embodiment, the continuous casting process comprises: and (3) continuously casting by adopting a casting machine to obtain a casting blank, and automatically controlling the water pressure by adopting a partition in the continuous casting process. The adoption of the continuous casting process is beneficial to further improving the uniformity of the distribution of each element in the alloy and is beneficial to further refining grains.
The second aspect of the present application also provides a 5xxx aluminum alloy, the 5xxx aluminum alloy produced using the method of manufacture provided by the application.
The 5xxx aluminum alloy prepared by the method has the advantages of uniform material composition, smaller crystal grains, smoother surface and higher plasticity, and is not easy to crack in the subsequent forging process.
The application is described in further detail below in connection with specific examples which are not to be construed as limiting the scope of the application as claimed.
Example 1
The weight percentages of the 5xxx aluminum alloy compositions are as follows: 4.0wt.% Mg,0.5wt.% Mn,0.5wt.% Cu,0.2wt.% Cr,0.4wt.% Fe,0.3wt.% Si,0.25wt.% Zn,0.1wt.% Ti, the balance being Al.
The preparation method of the 5xxx aluminum alloy material comprises the following steps:
(1) Smelting: adding aluminum ingots into a smelting furnace to be melted into aluminum liquid, and filling the aluminum liquid into a heat preservation furnace for heat preservation;
(2) And (3) material proportioning and refining: proportioning and refining according to the alloy proportion;
(3) Continuous casting: continuously casting by adopting a casting machine to obtain a casting blank; the water pressure is automatically controlled by adopting subareas in continuous casting;
(4) Scraping a casting blank: scraping the upper surface of the cast ingot by 1.0mm;
(5) Continuous rolling: heating to 500 ℃ by induction heating, and carrying out continuous rolling; the rolling system is formed by connecting two rolling mills in series, and comprises a roughing mill and a finishing mill; the rolling speed is 2.5m/s;
(6) The temperature of the heat collecting rod is 350 ℃, and the diameter phi of the rod is 11mm;
(7) Annealing: annealing the wire rod, wherein the temperature is increased to 480 ℃ at the speed of 3 ℃/min in the annealing process, the heat preservation time is 4 hours, and then the wire rod is cooled to 25 ℃ (room temperature);
(8) Drawing: cold drawing the annealed hot rolled rod to phi 6mm, and carrying out intermediate annealing at 420 ℃ in the drawing process for 2 hours;
(9) And (5) rolling.
Example 2
The weight percentages of the 5xxx aluminum alloy compositions are as follows: 5.0wt.% Mg,0.08wt.% Mn,0.05wt.% Cu,0.15wt.% Cr,0.2wt.% Fe,0.2wt.% Si,0.15wt.% Zn,0.05wt.% Ti, impurity content less than or equal to 0.5wt.% and balance Al.
The preparation method of the 5xxx aluminum alloy material comprises the following steps:
(1) Smelting: adding aluminum ingots into a smelting furnace to be melted into aluminum liquid, and filling the aluminum liquid into a heat preservation furnace for heat preservation;
(2) And (3) material proportioning and refining: proportioning and refining according to the alloy proportion;
(3) Continuous casting: continuously casting by adopting a casting machine to obtain a casting blank; the water pressure is automatically controlled by adopting subareas in continuous casting;
(4) Scraping a casting blank: scraping the upper surface of the cast ingot by 0.5mm;
(5) Continuous rolling: heating to 450 ℃ by induction heating, and carrying out continuous rolling; the rolling system is formed by connecting two rolling mills in series, and comprises a roughing mill and a finishing mill; the rolling speed is 2.2m/s;
(6) The temperature of the heat collecting rod is 280 ℃, and the diameter phi of the rod is 9mm;
(7) Annealing: annealing the wire rod, heating to 460 ℃ at a speed of 5 ℃/min in the annealing process, keeping the temperature for 8 hours, and then cooling to room temperature;
(8) Drawing: cold drawing the annealed hot rolled rod to phi 2.5mm, and carrying out intermediate annealing at 450 ℃ in the drawing process for 2 hours;
(9) And (5) rolling.
Example 3
The weight percentages of the 5xxx aluminum alloy compositions are as follows: 3.5wt.% Mg,0.3wt.% Mn,0.3wt.% Cu,0.17wt.% Cr,0.15wt.% Fe,0.1wt.% Si,0.1wt.% Zn,0.03wt.% Ti, impurity content less than or equal to 0.5wt.% and balance Al.
The preparation method of the 5xxx aluminum alloy material comprises the following steps:
(1) Smelting: adding aluminum ingots into a smelting furnace to be melted into aluminum liquid, and filling the aluminum liquid into a heat preservation furnace for heat preservation;
(2) And (3) material proportioning and refining: proportioning and refining according to the alloy proportion;
(3) Continuous casting: continuously casting by adopting a casting machine to obtain a casting blank; the water pressure is automatically controlled by adopting subareas in continuous casting;
(4) Scraping a casting blank: scraping the upper surface of the cast ingot by 0.8mm;
(5) Continuous rolling: heating to 470 ℃ through induction heating, and carrying out continuous rolling; the rolling system is formed by connecting two rolling mills in series, and comprises a roughing mill and a finishing mill; the rolling speed is 2.4m/s;
(6) The temperature of the heat collecting rod is 300 ℃, and the diameter phi of the rod is 10mm;
(7) Annealing: annealing the wire rod, heating to 500 ℃ at a speed of 3 ℃/min in the annealing process, keeping the temperature for 4 hours, and then cooling to room temperature;
(8) Drawing: cold drawing the annealed hot rolled rod to phi 4mm, and carrying out intermediate annealing at 400 ℃ in the drawing process for 2 hours;
(9) And (5) rolling.
Example 4
The composition of the formulation was the same as in example 1.
The differences from example 1 are: the shave thickness was 0.5mm.
Example 5
The composition of the formulation was the same as in example 1.
The differences from example 1 are: the shave thickness was 0.7mm.
Example 6
The composition of the formulation was the same as in example 1.
The differences from example 1 are: the shave thickness was 1.2mm.
Example 7
The composition of the formulation was the same as in example 1.
The differences from example 1 are: the temperature in the continuous rolling process is 450 ℃, and the temperature of hot rolling is 290 ℃.
Example 8
The composition of the formulation was the same as in example 1.
The differences from example 1 are: the temperature during continuous rolling was 400℃and the temperature for hot rolling was 250 ℃.
Example 9
The composition of the formulation was the same as in example 1.
The differences from example 1 are: in the continuous rolling process, the continuous rolling speed is 2.2m/s.
Example 10
The composition of the formulation was the same as in example 1.
The differences from example 1 are: in the continuous rolling process, the continuous rolling speed is 3m/s.
Example 11
The composition of the formulation was the same as in example 1.
The differences from example 1 are: in the continuous rolling process, the continuous rolling speed is 2.3m/s.
Example 12
The composition of the formulation was the same as in example 1.
The differences from example 1 are: the annealing process was carried out at 400℃for 8 hours.
Example 13
The composition of the formulation was the same as in example 1.
The differences from example 1 are: the temperature of the annealing process was 510 ℃.
Example 14
The composition of the formulation was the same as in example 1.
The differences from example 1 are: the time of the annealing process was 1h.
Example 15
The composition of the formulation was the same as in example 1.
The differences from example 1 are: there is no intermediate annealing process.
Example 16
The composition of the formulation was the same as in example 1.
The differences from example 1 are: the temperature of the intermediate annealing process was 350 ℃.
Comparative example 1
The 5xxx aluminum alloy compositions were consistent with example 1, except that the method of preparation included the following steps:
(1) Smelting: adding aluminum ingots into a smelting furnace to be melted into aluminum liquid, and filling the aluminum liquid into a heat preservation furnace for heat preservation;
(2) And (3) material proportioning and refining: proportioning and refining according to the alloy proportion;
(3) Continuous casting: continuously casting by adopting a casting machine to obtain a casting blank; the water pressure is automatically controlled by adopting subareas in continuous casting;
(4) Scraping a casting blank: scraping the upper surface of the cast ingot by 1.2mm;
(5) Continuous rolling: heating to 550 ℃ by induction heating, and carrying out continuous rolling; the rolling system is formed by connecting two rolling mills in series, and comprises a roughing mill and a finishing mill; the rolling speed is 3.5m/s;
(6) The temperature of the heat collecting rod is 300 ℃, and the diameter phi of the rod is 11mm;
(7) Drawing: annealing the hot-rolled wire rod at 350 ℃ and then carrying out cold drawing until the diameter is 6mm;
(8) And (5) rolling.
Comparative example 2
The weight percentages of the 5xxx aluminum alloy compositions are as follows: 5.6wt.% Mg,0.4wt.% Mn,0.8wt.% Cu,0.4wt.% Cr,0.6wt.% Fe,0.1wt.% Si,0.1wt.% Zn,0.15wt.% Ti, the balance being Al.
The preparation process was the same as in example 1.
FIG. 1 is a metal phase diagram of an aluminum alloy material according to example 1 of the present application. FIG. 2 is a metal phase diagram of the aluminum alloy material obtained in comparative example 1, and it is evident from the diagram that intermetallic compounds are seriously aggregated on the surface of a cast strip. By comparison, it can be seen that by optimizing the aluminum alloyAlloy element in gold and improved casting process, and the surface segregation of casting blank is obviously improved, wherein coarse beta phase and Mg are gathered 2 Both the Si and AlFeSi phases are eliminated, and no bright line exists on the surface of the wire rod.
TABLE 1
From the above description, it can be seen that the above embodiments of the present application achieve the following technical effects: through the subsequent heat treatment process, the micro segregation of Mg element is eliminated, and the unbalanced low-melting point eutectic structure is dissolved. According to the application, by annealing the hot rolled wire rod at a higher temperature for a relatively longer time, the uniformity of alloy performance can be effectively improved, bright lines on the surface are eliminated, the malleability of the alloy is improved, and the deformation of the wire rod reaches 85% without cracking no matter the wire rod is subjected to one-time cold heading or two-time cold heading.
It should be noted that the terms "first," "second," and the like in the description and in the claims are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those described herein.
The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (4)
1. A method of making a 5xxx aluminum alloy, the method of making a 5xxx aluminum alloy comprising:
alloy raw materials are prepared according to the following proportion: the raw materials comprise the following components in percentage by weight: 3.5 to 5.0. 5.0wt percent of Mg,0.08 to 0.5 percent of wt percent of Mn,0.05 to 0.5 percent of wt percent of Cu,0.15 to 0.2 percent of wt percent of Cr, less than or equal to 0.35 percent wt percent of Fe, less than or equal to 0.3 percent of Si, less than or equal to 0.25 percent of Zn, less than or equal to 0.1 percent of wt percent of Ti, less than or equal to 0.15 percent of wt percent of impurity content, and the balance of Al;
refining, continuous casting, casting blank scraping, continuous rolling, hot rolling rod, annealing and drawing the alloy raw materials in sequence to obtain the 5xxx aluminum alloy;
the casting blank scraping process comprises the following steps: scraping the casting blank obtained in the continuous casting process, wherein the thickness of the scraping process is 0.5-1.0 mm;
the continuous rolling process includes: the product obtained in the casting blank scraping process is heated to 450-500 ℃ through induction heating and then rolled for multiple times, and the hot finishing rolling temperature is controlled at 320-380 ℃; the continuous rolling process comprises a rough rolling process and a fine rolling process, wherein the rolling speed is 2.2-2.5 m/s;
the temperature of the rod heat recovery process is 280-350 ℃, and the diameter of the rod is 9-11 mm;
the annealing process includes: heating the wire rod obtained in the hot rod collecting process to 400-500 ℃ at the speed of 2-5 ℃/min for 2-8 h;
the drawing process comprises the following steps: cold-drawing the annealed hot rolled rod to a diameter of 1.5-6 mm, and then performing intermediate annealing;
the temperature of the intermediate annealing is 400-500 ℃ and the time is 1-2 h.
2. The method of manufacturing a 5xxx aluminum alloy according to claim 1, wherein the refining process is a two-shot refining process, wherein the temperature of the first refining process is 710 to 730 ℃, and the atmosphere is Ar and Cl 2 Is a mixed gas of (1); the temperature of the second refining process is 720-750 ℃, and the atmosphere is Ar and Cl 2 Is a mixed gas of (a) and (b).
3. The method of making a 5xxx aluminum alloy of claim 2, wherein the continuous casting process includes: and (3) continuously casting by adopting a casting machine to obtain a casting blank, wherein the water pressure is automatically controlled by adopting a partition in the continuous casting process.
4. A 5xxx aluminum alloy, characterized in that the 5xxx aluminum alloy is produced using the production method of any of claims 1-3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211475953.4A CN115679164B (en) | 2022-11-23 | 2022-11-23 | 5xxx aluminum alloys, and methods of making the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211475953.4A CN115679164B (en) | 2022-11-23 | 2022-11-23 | 5xxx aluminum alloys, and methods of making the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115679164A CN115679164A (en) | 2023-02-03 |
| CN115679164B true CN115679164B (en) | 2023-12-01 |
Family
ID=85056166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211475953.4A Active CN115679164B (en) | 2022-11-23 | 2022-11-23 | 5xxx aluminum alloys, and methods of making the same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115679164B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117488141A (en) * | 2023-09-25 | 2024-02-02 | 安徽广银铝业有限公司 | Aluminum-manganese alloy power battery shell and processing method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108588514A (en) * | 2017-12-13 | 2018-09-28 | 新疆众和股份有限公司 | A kind of method of high temperature rolling high-magnesium aluminum alloy bar |
| CN110042285A (en) * | 2019-05-23 | 2019-07-23 | 江苏亨通电力特种导线有限公司 | Rivet high-strength aluminium-magnesium alloy wire and preparation method thereof |
| US20200140976A1 (en) * | 2017-06-21 | 2020-05-07 | Obshchestvo S Ogranichennoy Otvetstvennost'yu "Obedinennaya Kompaniya Rusal Inzhenerno-Tekhnologiche | Aluminum-Based Alloy |
| CN113737069A (en) * | 2021-08-19 | 2021-12-03 | 中铝材料应用研究院有限公司 | 7xxx series aluminum alloy for fasteners and processing method of rods and wires thereof |
-
2022
- 2022-11-23 CN CN202211475953.4A patent/CN115679164B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20200140976A1 (en) * | 2017-06-21 | 2020-05-07 | Obshchestvo S Ogranichennoy Otvetstvennost'yu "Obedinennaya Kompaniya Rusal Inzhenerno-Tekhnologiche | Aluminum-Based Alloy |
| CN108588514A (en) * | 2017-12-13 | 2018-09-28 | 新疆众和股份有限公司 | A kind of method of high temperature rolling high-magnesium aluminum alloy bar |
| CN110042285A (en) * | 2019-05-23 | 2019-07-23 | 江苏亨通电力特种导线有限公司 | Rivet high-strength aluminium-magnesium alloy wire and preparation method thereof |
| CN113737069A (en) * | 2021-08-19 | 2021-12-03 | 中铝材料应用研究院有限公司 | 7xxx series aluminum alloy for fasteners and processing method of rods and wires thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115679164A (en) | 2023-02-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107604222B (en) | It is a kind of can ageing strengthening Al-Mg alloy and preparation method thereof | |
| CN113737069A (en) | 7xxx series aluminum alloy for fasteners and processing method of rods and wires thereof | |
| CN112458344B (en) | High-strength corrosion-resistant aluminum alloy and preparation method and application thereof | |
| CN110042285B (en) | High-strength aluminum-magnesium alloy wire for rivet and preparation method thereof | |
| CN115679164B (en) | 5xxx aluminum alloys, and methods of making the same | |
| CN114540649A (en) | High-forming baking-resistant 5xxx series aluminum alloy plate and preparation method thereof | |
| CN113481416A (en) | High-performance Al-Zn-Mg-Cu alloy | |
| CN113862533B (en) | Aluminum alloy and preparation method thereof | |
| CN112522552B (en) | Corrosion-resistant aluminum alloy and preparation method and application thereof | |
| CN114262827A (en) | Aluminum alloy material with crater for mobile phone back plate and preparation method of aluminum alloy material | |
| CN109988947B (en) | Corrosion resistant weldable alloy and method of making same | |
| JP5555154B2 (en) | Copper alloy for electrical and electronic parts and method for producing the same | |
| CN113528903A (en) | 5052 aluminum alloy with high bending performance and preparation method thereof | |
| CN112626384A (en) | Aluminum alloy with medium strength and high plasticity as well as preparation method and application thereof | |
| KR101499096B1 (en) | Aluminum alloy and manufacturing method thereof | |
| CN111254330A (en) | Aluminum alloy strip for computer bracket and preparation method thereof | |
| CN114250387B (en) | Aluminum alloy and preparation method thereof | |
| CN108884524B (en) | Aluminum alloy sheet and method for producing aluminum alloy sheet | |
| TW202033775A (en) | Method for manufacturing aluminum-manganese alloy | |
| CN110016595B (en) | Aluminum alloy foil and preparation method thereof | |
| JPH11350058A (en) | Aluminum alloy sheet excellent in formability and baking hardenability and its production | |
| JPH0447019B2 (en) | ||
| CN110129633B (en) | Aluminum alloy rivet line for furniture and preparation method thereof | |
| CN112795826A (en) | 7B04-T7451 aluminum alloy plate and preparation method thereof | |
| JP4022497B2 (en) | Method for manufacturing aluminum alloy panel |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |