CN115491556A - Armored aluminum profile and preparation method thereof - Google Patents
Armored aluminum profile and preparation method thereof Download PDFInfo
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Abstract
The invention discloses an armor aluminum profile and a preparation method thereof, belonging to the technical field of aluminum alloy, wherein the armor aluminum profile comprises the following elements in percentage by weight: mg:2.25 to 2.6 percent; si: less than or equal to 0.08 percent; fe:0.01 to 0.13 percent; cu:0.35 to 0.68 percent; ti:0.001 to 0.03 percent; zn:6.1 to 7.5 percent; mn:0.1 to 0.25 percent; cr: less than or equal to 0.01 percent; zr: 0.001-0.03 percent, and the armor aluminum profile is prepared by proportioning, smelting, casting, homogenizing, extruding and aging heat treatment. The invention can obtain the aluminum alloy material which has the tensile strength of more than 560MPa, the yield strength of more than 540MPa and the hardness of more than 190HV and meets the application requirement of the armor by simultaneously increasing the contents of Mg, zn and Cu and strictly controlling the contents of the Mg, zn and Cu.
Description
Technical Field
The invention belongs to the technical field of aluminum alloy, and particularly relates to an armor aluminum profile and a preparation method thereof.
Background
The 7-series aluminum alloy has the characteristics of convenient casting, good plastic formability, high hardness, high strength and high wear resistance, and is widely applied to the fields of aviation, aerospace, military industry and the like. For example, the Chinese patent with the publication number of CN113564434A discloses a 7-series aluminum alloy and a preparation method thereof, the mechanical properties of the obtained 7-series aluminum alloy are effectively improved by accurately controlling the content and the proportion of Mg and Zn, the finally obtained 7-series aluminum alloy has the tensile strength of more than 490MPa, the yield strength of more than 480MPa and the Vickers hardness HV of more than 170. As another patent of the invention in China with publication No. CN109295363A, a 7-series aluminum alloy is disclosed, which is composed of 1.95-2.2% of magnesium, 0.04-0.1% of silicon, 0.04-0.06% of iron, 0.15-0.33% of copper, 0.023-0.028% of titanium, 5.68-6.05% of zinc, 0.16-0.26% of manganese, 0.02-0.05% of zirconium and the balance of aluminum, and has the advantages of tensile strength of more than 470, yield strength of more than 440, vickers hardness HV of more than 160, and good fracture toughness and fatigue resistance. And as the Chinese patent with the publication number of CN109136688A, the invention discloses a manufacturing method of an aluminum alloy plate for an armored vehicle, which solves the problem of unstable mechanical property of the existing 7-series aluminum alloy in the generation process by improving a solid solution system and an aging process, wherein the tensile strength of the obtained aluminum alloy plate reaches 441 MPa-452 MPa, the yield strength reaches 376 MPa-393 MPa, and the elongation reaches 12.9% -14.7%. However, the current 7 series aluminum alloy can not meet the application requirements of modern armor on mechanical properties such as hardness, strength and the like.
Disclosure of Invention
In order to overcome the defects of the prior art, the technical problems to be solved by the invention are as follows: how to provide an aluminum alloy section which can meet the application requirements of armor, and has the tensile strength of more than 560MPa, the yield strength of more than 540MPa and the hardness of more than 190 HV.
In order to solve the technical problems, the invention adopts the technical scheme that: an armor aluminum profile comprises the following components in percentage by weight: mg:2.25 to 2.6 percent; si: less than or equal to 0.08 percent; fe:0.01 to 0.13 percent; cu:0.35 to 0.68 percent; ti:0.001 to 0.03 percent; zn:6.1 to 7.5 percent; mn:0.1 to 0.25 percent; cr: less than or equal to 0.01 percent; zr:0.001 to 0.03 percent; the balance being Al.
The technical scheme adopted by the invention is as follows: the preparation method of the armor aluminum profile comprises the following steps: according to the mass percentage of the elements as Mg:2.25 to 2.6 percent; si: less than or equal to 0.08 percent; fe:0.01 to 0.13 percent; cu:0.35 to 0.68 percent; ti:0.001 to 0.03 percent; zn:6.1 to 7.5 percent; mn:0.1 to 0.25 percent; cr: less than or equal to 0.01 percent; zr:0.001 to 0.03 percent; and (4) mixing the balance of Al, and then carrying out smelting, casting, homogenizing, extruding and aging heat treatment to obtain the armor aluminum profile.
The invention has the beneficial effects that: the contents of Mg, zn and Cu are simultaneously improved, the contents of the Mg, zn and Cu are controlled, so that the tensile strength, the yield strength and the hardness of the aluminum alloy are improved, a certain amount of Mn is added, crystal grains can be effectively refined, the preparation and processing of the material are facilitated, and the armor aluminum section bar which has the tensile strength of more than 560MPa, the yield strength of more than 540MPa and the hardness of more than 190HV and meets the application requirement of the armor is obtained. The preparation process provided by the invention is matched with reasonable extrusion and heat treatment processes, so that the stability of mechanical properties of the final product in the generation process is ensured.
Drawings
FIG. 1 shows the metallographic structure (50 times) of the macrocrystalline layer of the cross section of the head of the armor aluminum profile of example 5;
FIG. 2 shows a metallographic structure (50 times) of the coarse crystalline layer on the left side of the head of the armor aluminum profile of example 5;
FIG. 3 shows a metallographic structure (50 times) of the coarse crystalline layer on the right side of the head of the armor aluminum profile of example 5;
FIG. 4 shows a metallographic phase structure (500 times) of the precipitated phases of the cross section of the head of the aluminum section of the armor of example 5;
FIG. 5 shows a metallographic structure (500 times) of the precipitated phases on the side of the head of the aluminum armor profile of example 5;
FIG. 6 shows metallographic structures (50 times) of the coarse crystalline layers of the middle cross section of the armor aluminum profile of example 5;
FIG. 7 shows metallographic images (50 times) of the coarse grained layer on the left side of the middle of the aluminum section of the armor of example 5;
FIG. 8 shows metallographic structures (50 times) of the coarse crystalline layers on the right side of the middle part of the aluminum profile of the armor of example 5;
FIG. 9 shows the metallographic structure (500 times) of the precipitated phases of the central cross section of the armor aluminum profile of example 5;
FIG. 10 shows the metallographic structure of the precipitated phase (500 times) on the side of the middle part of the aluminum profile of the armor of example 5;
FIG. 11 shows the metallographic structure (50 times) of the macrocrystalline layer of the cross section of the tail of the armor aluminum profile of example 5;
fig. 12 shows a metallographic structure picture (50 x) of the coarse crystalline layer on the left side of the tail of the aluminum section of the armor of example 5;
fig. 13 shows a metallographic structure (50 x) of the coarse crystalline layer on the right side of the tail of the armor aluminum profile of example 5;
FIG. 14 shows metallographic phase structure (500 times) of the precipitated phases of the tail cross section of the armor aluminum profile of example 5;
FIG. 15 is a metallographic structure (500 times) showing the precipitated phases on the side of the tail of the aluminum armor profile of example 5;
FIG. 16 shows inclusions (500 times) in the cross-section of the head, middle and tail of the armor aluminum profile of example 5;
fig. 17 shows the side inclusions (500 times) at the head, middle and tail of the armor aluminum profile of example 5.
Detailed Description
In order to explain the technical contents, the objects and the effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.
The most key concept of the invention is as follows: the content of Mg, zn and Cu is strictly controlled, a certain amount of Mn is added, and extrusion and heat treatment processes are matched to obtain the aluminum alloy material which has the tensile strength of more than 560MPa, the yield strength of more than 540MPa and the hardness of more than 190HV and meets the application requirement of the armor.
The invention relates to an armor aluminum profile which comprises the following components in percentage by weight: mg:2.25 to 2.6 percent; si: less than or equal to 0.08 percent; fe:0.01 to 0.13 percent; cu:0.35 to 0.68 percent; ti:0.001 to 0.03 percent; zn:6.1 to 7.5 percent; mn:0.1 to 0.25 percent; cr: less than or equal to 0.01 percent; zr:0.001 to 0.03 percent.
From the above description, the beneficial effects of the present invention are: the invention improves the tensile strength, yield strength and hardness of the aluminum alloy by simultaneously increasing the contents of Mg, zn and Cu to 2.25-2.6%, 6.1-7.5% and 0.35-0.68% in a system containing Mg, zn, cu, si, fe, ti, mn, cr and Zr as main elements (non-impurities) so as to improve the tensile strength, yield strength and hardness of the aluminum alloy, and simultaneously controls the content of Mn to 0.1-0.25% so as to effectively refine grains and reduce the grain size difference, thereby being beneficial to the preparation and processing of materials, and obtaining the armor aluminum section bar which has the tensile strength of more than 560MPa, the yield strength of more than 540MPa and the hardness of more than 190HV and meets the application requirements of armor.
Furthermore, the content of single impurity elements except the elements is less than or equal to 0.05 percent, and the content of total impurity elements is less than or equal to 0.12 percent.
From the above description, it can be seen that controlling the content of other impurity elements within the above range does not significantly affect the mechanical properties and the processability of the obtained aluminum alloy.
The preparation method of the armor aluminum profile comprises the following steps of: 2.25 to 2.6 percent; si: less than or equal to 0.08 percent; fe:0.01 to 0.13 percent; cu:0.35 to 0.68 percent; ti:0.001 to 0.03 percent; zn:6.1 to 7.5 percent; mn:0.1 to 0.25 percent; cr: less than or equal to 0.01 percent; zr:0.001 to 0.03 percent; and (4) mixing the balance of Al, and then carrying out smelting, casting, homogenizing, extruding and aging heat treatment to obtain the armor aluminum profile.
Further, the preparation method specifically comprises the following steps;
s1, respectively weighing a magnesium-aluminum-manganese intermediate alloy, an aluminum-silicon intermediate alloy, an aluminum-iron intermediate alloy, an aluminum-copper intermediate alloy, an aluminum-titanium intermediate alloy, a pure zinc ingot, an aluminum-chromium intermediate alloy, an aluminum-zirconium intermediate alloy and an aluminum ingot as raw materials according to the mass percentages of the elements;
s2, putting all the raw materials into a smelting furnace for smelting, and then sequentially removing impurities and refining to obtain an aluminum alloy melt;
s3, performing online vacuum degassing, plate-type filtering and tubular filtering purification treatment on the aluminum alloy melt in sequence, and then performing semi-continuous water-cooling casting to obtain an alloy ingot;
s4, performing two-stage homogenization treatment on the alloy ingot at the temperature of 350-400 ℃ for 2-4 h and at the temperature of 430-480 ℃ for 3-6 h to obtain an aluminum alloy ingot;
s5, heating the aluminum alloy cast ingot to 450-520 ℃, placing the aluminum alloy cast ingot in an extruder die at 490-510 ℃, carrying out extrusion forming at the speed of 3-8 m/min, and then carrying out water cooling to obtain a primary section; preferably, the extrusion forming is carried out at the speed of 5-6 m/min;
and S6, polishing and grinding the primary section after double-stage aging heat treatment of keeping the temperature at 120-140 ℃ for 6-10 h and keeping the temperature at 150-170 ℃ for 12-16 h to obtain the armor aluminum section.
From the above description, the steps S1 to S3 follow the conventional process, the performance of the finished product cannot be obviously influenced under the condition of the compliant operation, the proper extrusion and heat treatment processes need to be adjusted in the processing process, the temperature and the speed of extrusion need to be accurately controlled, the temperature difference of the two-stage aging treatment is not easy to be too large, and the high mechanical property of the obtained armor aluminum profile is further ensured.
Example 1:
an armor aluminum profile is composed of the following elements in percentage by weight: mg:2.4 percent; si:0.05 percent; fe:0.13 percent; cu:0.6 percent; ti:0.001 percent; zn:7.0 percent; mn:0.25 percent; cr:0.003%; zr:0.014%; the balance of Al;
the content of single impurity element except the elements is less than or equal to 0.05 percent, and the content of total impurity elements is less than or equal to 0.12 percent.
The method for preparing the armor aluminum profile of embodiment 1 comprises the following steps:
s1, respectively weighing a magnesium-aluminum-manganese intermediate alloy, an aluminum-silicon intermediate alloy, an aluminum-iron intermediate alloy, an aluminum-copper intermediate alloy, an aluminum-titanium intermediate alloy, a pure zinc ingot, an aluminum-chromium intermediate alloy, an aluminum-zirconium intermediate alloy and an aluminum ingot as raw materials according to the mass percentages of the elements;
s2, putting all the raw materials into a smelting furnace for smelting, and then sequentially removing impurities and refining to obtain an aluminum alloy melt;
s3, performing online vacuum degassing, plate-type filtering and tubular filtering purification treatment on the aluminum alloy melt in sequence, and then performing semi-continuous water-cooling casting to obtain an alloy ingot;
s4, carrying out two-stage homogenization treatment on the alloy ingot at the temperature of 350 ℃ for 3h and at the temperature of 480 ℃ for 5h to obtain an aluminum alloy ingot;
s5, heating the aluminum alloy cast ingot to 480 ℃, placing the aluminum alloy cast ingot in a 500-DEG C extruder die, carrying out extrusion forming at the speed of 6m/min, and then carrying out water cooling to obtain a primary section;
s6, polishing and grinding the primary section after two-stage aging heat treatment of keeping the temperature at 140 ℃ for 8h and keeping the temperature at 170 ℃ for 12h to obtain the armor aluminum section.
Example 2:
an armor aluminum profile is composed of the following elements in percentage by weight: mg:2.25 percent; si:0.08 percent; fe:0.01 percent; cu:0.5 percent; ti:0.005 percent; zn:6.3 percent; mn:0.1 percent; cr:0.01 percent; zr:0.03 percent; the balance of Al;
the content of single impurity element outside the elements is less than or equal to 0.05 percent, and the content of total impurity elements is less than or equal to 0.12 percent.
The method of making the armor aluminum profile of embodiment 2, comprising the steps of:
s1, respectively weighing a magnesium-aluminum-manganese intermediate alloy, an aluminum-silicon intermediate alloy, an aluminum-iron intermediate alloy, an aluminum-copper intermediate alloy, an aluminum-titanium intermediate alloy, a pure zinc ingot, an aluminum-chromium intermediate alloy, an aluminum-zirconium intermediate alloy and an aluminum ingot as raw materials according to the mass percentages of the elements;
s2, putting all the raw materials into a smelting furnace for smelting, and then sequentially removing impurities and refining to obtain an aluminum alloy melt;
s3, performing online vacuum degassing, plate-type filtering and tubular filtering purification treatment on the aluminum alloy melt in sequence, and then performing semi-continuous water-cooling casting to obtain an alloy ingot;
s4, performing two-stage homogenization treatment on the alloy ingot at 400 ℃ for 2h and at 430 ℃ for 6h to obtain an aluminum alloy ingot;
s5, heating the aluminum alloy ingot to 520 ℃, placing the aluminum alloy ingot in a 510 ℃ extruder die, carrying out extrusion forming at the speed of 3m/min, and then carrying out water cooling to obtain a primary section;
and S6, polishing and grinding the primary section after two-stage aging heat treatment of heat preservation at 120 ℃ for 10h and heat preservation at 150 ℃ for 16h to obtain the armor aluminum section.
Example 3:
an armor aluminum profile is composed of the following elements in percentage by weight: mg:2.6 percent; si:0.03 percent; fe:0.08 percent; cu:0.35 percent; ti:0.03 percent; zn:6.1 percent; mn:0.2 percent; cr:0.008 percent; zr:0.001 percent; the balance of Al;
the content of single impurity element except the elements is less than or equal to 0.05 percent, and the content of total impurity elements is less than or equal to 0.12 percent.
The method for preparing the armor aluminum profile of embodiment 3 comprises the following steps:
s1, respectively weighing a magnesium-aluminum-manganese intermediate alloy, an aluminum-silicon intermediate alloy, an aluminum-iron intermediate alloy, an aluminum-copper intermediate alloy, an aluminum-titanium intermediate alloy, a pure zinc ingot, an aluminum-chromium intermediate alloy, an aluminum-zirconium intermediate alloy and an aluminum ingot as raw materials according to the mass percentages of the elements;
s2, putting all the raw materials into a smelting furnace for smelting, and then sequentially removing impurities and refining to obtain an aluminum alloy melt;
s3, performing online vacuum degassing, plate-type filtering and tubular filtering purification treatment on the aluminum alloy melt in sequence, and then performing semi-continuous water-cooling casting to obtain an alloy ingot;
s4, carrying out two-stage homogenization treatment on the alloy ingot at the temperature of 380 ℃ for 3h and at the temperature of 460 ℃ for 5h to obtain an aluminum alloy ingot;
s5, heating the aluminum alloy cast ingot to 450 ℃, placing the aluminum alloy cast ingot in an extruder die at 490 ℃, carrying out extrusion forming at the speed of 8m/min, and then carrying out water cooling to obtain a primary section;
s6, polishing and grinding the primary section after double-stage aging heat treatment of keeping the temperature at 130 ℃ for 6h and keeping the temperature at 160 ℃ for 14h to obtain the armor aluminum section.
Example 4:
an armor aluminum profile is composed of the following elements in percentage by weight: mg:2.51 percent; si:0.04 percent; fe:0.11 percent; cu:0.68 percent; ti:0.001 percent; zn:7.5 percent; mn:0.18 percent; cr:0.003%; zr:0.01 percent; the balance of Al;
the content of single impurity element except the elements is less than or equal to 0.05 percent, and the content of total impurity elements is less than or equal to 0.12 percent.
The armor aluminum profile of example 4 was prepared using the same procedure as in example 1, except that the extrusion speed was 5 m/min.
Example 5:
an armor aluminum profile is composed of the following elements in percentage by weight: mg:2.39 percent; si:0.03 percent; fe:0.091%; cu:0.394%; ti:0.0135 percent; zn:7.31 percent; mn:0.15 percent; cr:0.003%; zr:0.012%; ni:0.008 percent; v:0.006%; pb:0.001 percent; sn:0.001 percent; na:0.001 percent; b:0.00052%; ga:0.0131 percent; cd:0.001 percent; the balance being Al. The armor aluminum profile of example 5 was prepared in the same manner as in example 1.
The armor aluminum profile provided by the invention can be used as an armor material, is also suitable for sand surface anodic treatment and highlight anodic treatment, can meet various dyeing processes, and can be used as a profile of an electronic product (such as a mobile phone and a computer shell).
Comparative example 1:
comparative example 1 differs from example 1 only in that S5 is different, and S5 of comparative example 1 is: heating the aluminum alloy cast ingot to 460 ℃, placing the aluminum alloy cast ingot in a 480 ℃ extruder die, carrying out extrusion forming at the speed of 2m/min, and then carrying out air cooling to obtain a primary section;
comparative example 2:
comparative example 2 differs from example 1 only in that S6 is different, and S6 of comparative example 2 is: and (3) carrying out aging heat treatment on the primary section at 180 ℃ for 20h, and then polishing and grinding to obtain the armor aluminum section.
Comparative example 3:
comparative example 3 differs from example 1 in the element composition, but the profile was prepared in the same way;
the armor aluminum profile of comparative example 3, consisting of the following elements in weight percent: mg:2.1 percent; si:0.032%; fe:0.068%; cu:0.16 percent; ti:0.0103%; zn:6.04 percent; mn:0.206%; cr:0.0028%; zr:0.015%; the balance of Al;
the content of single impurity element except the elements is less than or equal to 0.05 percent, and the content of total impurity elements is less than or equal to 0.12 percent.
The chemical composition of the armor aluminum profiles of examples 1-5 is tested according to GB/T7999-2007.
The armor aluminum profiles obtained in the embodiments 1 to 5 are detected, the detection standards refer to GB/T228.1, GB/T4340.1 2009 and GB/T3246.1, and the detection results are shown in tables 1 and 2. The mechanical properties of different parts of the obtained aluminum section bar of the armor are different, so that the head part, the middle part and the tail part are respectively detected, and the results are recorded in tables 1 and 2 in a range value form.
TABLE 1
| Tensile strength (MPa) | Yield strength (Mpa) | Elongation (%) | Vickers Hardness (HV) | |
| Example 1 | 566～575 | 548～550 | 7.0～8.0 | 195～199 |
| Example 2 | 562～567 | 544～548 | 8.1～9.3 | 192～197 |
| Example 3 | 572～579 | 551～556 | 6.9～7.6 | 199～205 |
| Example 4 | 569～577 | 549～553 | 7.1～8.3 | 198～203 |
| Example 5 | 569～575 | 547～551 | 7.8～9.5 | 196～202 |
| Comparative example 1 | 505～530 | 455～480 | 6.5～9.0 | 150～170 |
| Comparative example 2 | 530～545 | 510～515 | 8.5.～9.8 | 178～185 |
| Comparative example 3 | 485～505 | 465～485 | 10.5.～12.8 | 165～175 |
TABLE 2
| Grain size of Cross section (. Mu.m) | Horizontal plane grain size (mum) | Precipitated phase (. Mu.m) | Thickness of coarse grain layer (μm) | |
| Example 1 | 60～110 | 60～130 | 4～8 | ≤500 |
| Example 2 | 50～110 | 50～130 | 4～8 | ≤500 |
| Example 3 | 45～110 | 50～130 | 4～9 | ≤500 |
| Example 4 | 40～110 | 50～130 | 4～8 | ≤500 |
| Comparative example 1 | 30～110 | 60～130 | 6～15 | ≤500 |
| Comparative example 2 | 60～110 | 60～130 | 5～9 | ≤500 |
| Comparative example 3 | 45～120 | 45～130 | 4～10 | ≤500 |
The armor aluminum profile obtained in example 5 was tested at the head, middle and tail. The instruments used for the test comprise a direct-reading emission spectrometer, a metallographic microscope, a Vickers hardness tester and a universal material testing machine; the test references are GB/T7999 2007, GB/T4340.1-2009, GB/T3246.1 and GB/T228.1 2010; the ambient temperature and humidity during the test were respectively: 23. + -. 5 ℃ and 40 60% RH. Wherein, the horizontal direction of the cross section is called side face for short; the longitudinal section is called a large surface for short in the horizontal direction; the cross section perpendicular direction is simply called the cross section.
The results of the coarse grain layer thickness, grain size, and grain level measurements are shown in tables 3-4.
TABLE 3
TABLE 4
As can be seen by combining fig. 1 to 17 and tables 3 to 4, the armor aluminum profile provided by the invention has no obvious coarse crystal layer, small grain size, uniform grain size and small grain size difference; and the precipitated phase is uniformly distributed and has small size.
In summary, the contents of Mg, zn and Cu are simultaneously improved, the contents of the Mg, zn and Cu are controlled, and reasonable extrusion and aging treatment processes are matched to improve the tensile strength, yield strength and hardness of the aluminum profile, so that the armor aluminum profile with stable mechanical property of the product, the tensile strength of which can reach above 560MPa, the yield strength of which can reach above 540MPa and the hardness of which can reach above 190HV, is obtained.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to the related technical fields, are included in the scope of the present invention.
Claims (9)
1. The aluminum section bar for the armor is characterized by comprising the following elements in percentage by weight: mg:2.25 to 2.6 percent; si: less than or equal to 0.08 percent; fe:0.01 to 0.13 percent; cu:0.35 to 0.68 percent; ti:0.001 to 0.03 percent; zn:6.1 to 7.5 percent; mn:0.1 to 0.25 percent; cr: less than or equal to 0.01 percent; zr:0.001 to 0.03 percent.
2. The armor aluminum profile of claim 1, consisting of the following elements in percentage by weight: mg:2.25 to 2.6 percent; si: less than or equal to 0.08 percent; fe:0.01 to 0.13 percent; cu:0.35 to 0.68 percent; ti:0.001 to 0.03 percent; zn:6.1 to 7.5 percent; mn:0.1 to 0.25 percent; cr: less than or equal to 0.01 percent; zr:0.001 to 0.03 percent; the balance being Al.
3. The armor aluminum profile of claim 1, wherein the content of individual impurity elements is less than or equal to 0.05%, and the content of total impurity elements is less than or equal to 0.12%.
4. The preparation method of the armor aluminum profile is characterized in that the armor aluminum profile comprises the following elements in percentage by mass: 2.25 to 2.6 percent; si: less than or equal to 0.08 percent; fe:0.01 to 0.13 percent; cu:0.35 to 0.68 percent; ti:0.001 to 0.03 percent; zn:6.1 to 7.5 percent; mn:0.1 to 0.25 percent; cr: less than or equal to 0.01 percent; zr:0.001 to 0.03 percent; and (4) mixing the balance of Al, and then carrying out smelting, casting, homogenizing, extruding and aging heat treatment to obtain the armor aluminum profile.
5. The preparation method of the armor aluminum profile of claim 4, characterized by comprising the following steps:
s1, weighing raw materials according to the mass percentage of the elements;
s2, putting all the raw materials into a smelting furnace for smelting, and then sequentially removing impurities and refining to obtain an aluminum alloy melt;
s3, performing online vacuum degassing, plate-type filtering and tubular filtering purification treatment on the aluminum alloy melt in sequence, and then performing semi-continuous water-cooling casting to obtain an alloy ingot;
s4, homogenizing the alloy ingot to obtain an aluminum alloy ingot;
s5, placing the aluminum alloy cast ingot in an extruder die for extrusion forming, and then performing water cooling to obtain a primary section;
and S6, polishing and grinding the primary section after aging heat treatment to obtain the armor aluminum section.
6. The preparation method of the armor aluminum profile according to claim 4, wherein the homogenization treatment is a two-stage homogenization treatment of heat preservation at 350-400 ℃ for 2-4 h and heat preservation at 430-480 ℃ for 3-6 h.
7. The preparation method of the armor aluminum profile according to claim 4, wherein S5 is specifically as follows: heating the aluminum alloy cast ingot to 450-520 ℃, placing the aluminum alloy cast ingot in an extruder die at 490-510 ℃, carrying out extrusion forming at the speed of 3-8 m/min, and then carrying out water cooling to obtain a primary section.
8. The preparation method of the armor aluminum profile of claim 4, wherein the aging heat treatment is a two-stage aging heat treatment.
9. The preparation method of the armor aluminum profile according to claim 4, wherein the double-stage aging heat treatment is performed by keeping the temperature at 120-140 ℃ for 6-10h and keeping the temperature at 150-170 ℃ for 12-16 h.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101484603A (en) * | 2006-07-07 | 2009-07-15 | 阿勒里斯铝业科布伦茨有限公司 | AA7000-series aluminium alloy products and a method of manufacturing thereof |
| JP2014105389A (en) * | 2012-11-30 | 2014-06-09 | Aisin Keikinzoku Co Ltd | Billet for extrusion molding of 7000 series aluminum alloy, and extruded shape material using the same |
| CN110983131A (en) * | 2019-12-26 | 2020-04-10 | 辽宁忠旺集团有限公司 | 7-series aluminum alloy section and manufacturing method thereof |
| CN113564434A (en) * | 2021-08-12 | 2021-10-29 | 四川福蓉科技股份公司 | 7-series aluminum alloy and preparation method thereof |
| CN114277291A (en) * | 2021-12-24 | 2022-04-05 | 东北轻合金有限责任公司 | Al-Zn-Mg-Cu aluminum alloy extrusion material for aerospace and preparation method thereof |
| CN114561576A (en) * | 2022-03-02 | 2022-05-31 | 山东裕航特种合金装备有限公司 | On-line quenching easily-extruded ultrahigh-strength aluminum alloy and manufacturing method and application thereof |
-
2022
- 2022-09-22 CN CN202211158785.6A patent/CN115491556B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101484603A (en) * | 2006-07-07 | 2009-07-15 | 阿勒里斯铝业科布伦茨有限公司 | AA7000-series aluminium alloy products and a method of manufacturing thereof |
| JP2014105389A (en) * | 2012-11-30 | 2014-06-09 | Aisin Keikinzoku Co Ltd | Billet for extrusion molding of 7000 series aluminum alloy, and extruded shape material using the same |
| CN110983131A (en) * | 2019-12-26 | 2020-04-10 | 辽宁忠旺集团有限公司 | 7-series aluminum alloy section and manufacturing method thereof |
| CN113564434A (en) * | 2021-08-12 | 2021-10-29 | 四川福蓉科技股份公司 | 7-series aluminum alloy and preparation method thereof |
| CN114277291A (en) * | 2021-12-24 | 2022-04-05 | 东北轻合金有限责任公司 | Al-Zn-Mg-Cu aluminum alloy extrusion material for aerospace and preparation method thereof |
| CN114561576A (en) * | 2022-03-02 | 2022-05-31 | 山东裕航特种合金装备有限公司 | On-line quenching easily-extruded ultrahigh-strength aluminum alloy and manufacturing method and application thereof |
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