CN117737521A - 6-series extruded aluminum alloy with enhanced cementing property and production method thereof - Google Patents
6-series extruded aluminum alloy with enhanced cementing property and production method thereof Download PDFInfo
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- CN117737521A CN117737521A CN202311838583.0A CN202311838583A CN117737521A CN 117737521 A CN117737521 A CN 117737521A CN 202311838583 A CN202311838583 A CN 202311838583A CN 117737521 A CN117737521 A CN 117737521A
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- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 93
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 20
- 238000001816 cooling Methods 0.000 claims abstract description 17
- 238000005266 casting Methods 0.000 claims abstract description 14
- 238000007670 refining Methods 0.000 claims abstract description 14
- 230000032683 aging Effects 0.000 claims abstract description 7
- 239000002994 raw material Substances 0.000 claims abstract description 7
- 238000003723 Smelting Methods 0.000 claims abstract description 6
- 238000010791 quenching Methods 0.000 claims abstract description 6
- 230000000171 quenching effect Effects 0.000 claims abstract description 6
- 238000007872 degassing Methods 0.000 claims abstract description 5
- 238000001914 filtration Methods 0.000 claims abstract description 4
- 239000012535 impurity Substances 0.000 claims abstract description 4
- 239000007788 liquid Substances 0.000 claims description 26
- 238000004026 adhesive bonding Methods 0.000 claims description 8
- 238000001125 extrusion Methods 0.000 claims description 8
- 239000003795 chemical substances by application Substances 0.000 claims description 7
- 239000000498 cooling water Substances 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000002844 melting Methods 0.000 claims description 4
- 230000008018 melting Effects 0.000 claims description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 3
- 229910052739 hydrogen Inorganic materials 0.000 claims description 3
- 239000001257 hydrogen Substances 0.000 claims description 3
- 238000003303 reheating Methods 0.000 claims description 3
- 238000000265 homogenisation Methods 0.000 claims description 2
- 230000001070 adhesive effect Effects 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 3
- 238000012545 processing Methods 0.000 abstract description 2
- 238000004381 surface treatment Methods 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 description 24
- 239000000853 adhesive Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 238000011156 evaluation Methods 0.000 description 3
- 238000004321 preservation Methods 0.000 description 3
- 238000005728 strengthening Methods 0.000 description 3
- 230000003746 surface roughness Effects 0.000 description 3
- 238000009864 tensile test Methods 0.000 description 3
- 239000000956 alloy Substances 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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- Extrusion Of Metal (AREA)
Abstract
The invention relates to the technical field of aluminum alloy processing, in particular to 6-series extruded aluminum alloy with reinforced adhesive property and a production method thereof, wherein the 6-series extruded aluminum alloy with reinforced adhesive property comprises the following components in percentage by mass: si:0.5 to 0.9 percent, cu: less than or equal to 0.15 percent, fe:0.18 to 0.25 percent, mn:0.12 to 0.18 percent, mg:0.51 to 0.58 percent, ti:0.02 to 0.06 percent, zr: 0.02-0.08%, cr:0.05 to 0.1 percent of Er:0.2 to 0.4 percent, sc:0.3 to 0.5 percent, impurities or other elements: less than or equal to 0.05 percent, and the balance of Al, and the aluminum alloy profile product is prepared through smelting, refining, standing, degassing, filtering, ingot casting, homogenizing, re-casting and aging treatment. According to the invention, the cooling intensity in the quenching and cooling process is controlled by adjusting the types of raw materials and the content of each component, so that the bonding effect of the synthesized aluminum alloy section is improved while the original attribute of the aluminum alloy section is maintained, the workload of surface treatment before bonding the aluminum alloy section is reduced, the production cost of aluminum alloy bonding is reduced, and the working efficiency is indirectly improved.
Description
Technical Field
The invention relates to the technical field of aluminum alloy processing, in particular to a 6-series extruded aluminum alloy for strengthening cementing property and a production method thereof.
Background
The 6-series aluminum alloy has moderate strength, good weldability, corrosion resistance and the like, and is widely applied to the fields of automobiles and aviation due to its high strength ratio and workability, but the aluminum alloy has extremely low resistivity and is liable to interact with spot welding electrodes, which is very disadvantageous for the connection of spot welding. In order to solve the problems, the cementing process becomes an alternative mode for connecting aluminum alloy materials, and has the advantages of large bearing area, uniform stress distribution, good fatigue resistance and the like.
At present, a method for specially treating the surface of an aluminum alloy is generally adopted to improve the cementing effect of the aluminum alloy, but an aluminum alloy which has good cementing performance is lacking.
Disclosure of Invention
The invention aims to provide a 6-series extruded aluminum alloy with enhanced adhesive bonding performance, so as to improve the adhesive bonding performance of the produced aluminum alloy.
In order to achieve the above purpose, the present invention adopts the following technical scheme.
The 6-series extruded aluminum alloy with enhanced adhesive bonding performance comprises the following components in percentage by mass: si:0.5 to 0.9 percent, cu: less than or equal to 0.15 percent, fe:0.18 to 0.25 percent, mn:0.12 to 0.18 percent, mg:0.51 to 0.58 percent, ti:0.02 to 0.06 percent, zr: 0.02-0.08%, cr:0.05 to 0.1 percent of Er:0.2 to 0.4 percent, sc:0.3 to 0.5 percent, impurities or other elements: less than or equal to 0.05 percent, and the balance of Al.
A method for producing 6-series extruded aluminum alloy with enhanced adhesive bonding performance is used for producing the 6-series extruded aluminum alloy with enhanced adhesive bonding performance, and comprises the following steps:
s1: smelting various raw materials according to mass percentage to prepare aluminum alloy liquid;
s2: adding a refining agent to refine the aluminum alloy liquid;
s3: stopping heating, and standing the aluminum alloy liquid for 25-35 min;
s4: carrying out online degassing and bipolar filtering on the aluminum alloy liquid after standing;
s5: preheating casting equipment, casting aluminum alloy liquid into an aluminum alloy ingot, and introducing cooling water for cooling;
s6: reheating and melting the aluminum alloy ingot into aluminum alloy liquid, continuously preserving heat, homogenizing the aluminum alloy liquid, introducing cooling water for cooling, and re-casting the aluminum alloy liquid into an aluminum alloy rod;
s7: heating and extrusion molding the aluminum alloy ingot, and quenching and cooling the extruded aluminum alloy section;
s8: and (5) aging the aluminum alloy profile.
Further, in the step S1, the smelting temperature is 710-760 ℃.
Further, in the step S2, the refining temperature is 720-740 ℃, the refining time is 20-30 min, and the refining agent is a fluorine-free and sodium-free refining agent.
Further, the preheating temperature of the casting equipment in the step S5 is 740-780 ℃, the casting speed is 70-85 mm/min, and the hydrogen content in the aluminum alloy ingot is less than 0.1mL/100g.
Further, in the step S6, the homogenization temperature is 500-520 ℃, and the heat preservation time is 7-9 hours.
Further, in the step S7, the extrusion temperature is 490-510 ℃, the extrusion speed is 2-3 mm/S, and the cooling strength is 80-120 ℃/S.
Further, the aging treatment temperature in the step S8 is 170-180 ℃, and the heat preservation time is 7.5-8.5 hours.
The invention has the beneficial effects that:
according to the invention, the cooling strength of the aluminum alloy after quenching is controlled by adjusting the types of the raw materials and the contents of the components, so that the bonding effect of the synthesized aluminum alloy section is improved while the original properties of the aluminum alloy material are maintained, the workload of surface treatment before bonding the aluminum alloy section is reduced, the production cost of bonding the aluminum alloy is reduced, and the working efficiency is indirectly improved.
Drawings
In order to more clearly illustrate the technical solutions of the present invention, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a graph of the cementing effect of the experimental group;
FIG. 2 is a graph showing the cementing effect of the control group 1;
fig. 3 is a graph showing the cementing effect of the control group 2.
Detailed Description
The present invention will be described in further detail with reference to specific embodiments in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to fall within the scope of the invention.
Example 1
In the embodiment, the 6-series extruded aluminum alloy for strengthening the cementing property comprises the following components in percentage by mass: si:0.5 to 0.9 percent, cu: less than or equal to 0.15 percent, fe:0.18 to 0.25 percent, mn:0.12 to 0.18 percent, mg:0.51 to 0.58 percent, ti:0.02 to 0.06 percent, zr: 0.02-0.08%, cr:0.05 to 0.1 percent of Er:0.2 to 0.4 percent, sc:0.3 to 0.5 percent, impurities or other elements: less than or equal to 0.05 percent, and the balance of Al.
A production method of 6-series extruded aluminum alloy for strengthening cementing property comprises the following steps:
s1: smelting various raw materials according to the mass percentage, wherein the smelting temperature is 710-760 ℃ to prepare aluminum alloy liquid;
s2: adding a fluoride-free and sodium-free refining agent to refine the aluminum alloy liquid, wherein the refining temperature is 720-740 ℃ and the refining time is 20-30 min;
s3: stopping heating, and standing the aluminum alloy liquid for 25-35 min;
s4: carrying out online degassing and bipolar filtering on the aluminum alloy liquid after standing;
s5: preheating and preheating pouring equipment such as a launder, a degassing box, a filter box membrane disc and the like, wherein the equipment temperature reaches 740-780 ℃, carrying out hot top horizontal casting on aluminum alloy liquid, pouring the aluminum alloy liquid into an aluminum alloy solid round ingot, wherein the pouring speed is 70-85 mm/min, the hydrogen content in the aluminum alloy liquid is less than 0.1mL/100g, cooling water is introduced, and the cooling water flow is 3000-3500L/min;
s6: reheating and melting the aluminum alloy round ingot into aluminum alloy liquid, keeping the temperature at 500-520 ℃ for 7-9 hours, homogenizing the aluminum alloy liquid, introducing cooling water for cooling, and re-casting the aluminum alloy liquid into an aluminum alloy rod;
s7: heating and extrusion molding an aluminum alloy bar by using a 3000T extruder, controlling the extrusion speed to be 2-3 mm/s, controlling the temperature to be 490-510 ℃, extruding the aluminum alloy bar into a Chinese character 'ri' shaped section with the wall thickness of 2.5mm, quenching and cooling the extruded Chinese character 'ri' shaped aluminum alloy section, and controlling the cooling intensity to be 80-120 ℃ per second by online spraying;
s8: and (3) aging the aluminum alloy section, wherein the aging temperature is 170-180 ℃, and the heat preservation time is 7.5-8.5 hours.
Example two
In the embodiment, the production of the aluminum alloy section is respectively carried out according to the raw material content shown in the following table, the experiment group is produced according to the raw material proportion and the production condition protected by the invention, and the cooling intensity of the step S7 is controlled to be 100 ℃/S in the production process of the experiment group; the control group 1 was produced under the same production conditions as the experimental group, and the control group 2 was controlled to have a cooling intensity of 70 deg.c/S in step S7, and the remaining production conditions were the same as the experimental group.
And (3) detecting the cementing performance of the aluminum alloy section products produced by the experimental group, the control group 1 and the control group 2, wherein the detection conditions are as follows:
taking a plurality of wire cutting test pieces from an aluminum alloy section produced by an experimental group, wherein the size of the test pieces is 229mm multiplied by 25mm multiplied by 2.5mm, the surface roughness Ra of the test pieces is 0.893 mu m, the adhesive is Hangao Teroson 5089, the experimental materials are adhered to the surface of the test pieces by using the adhesive, and the test pieces are evaluated by a tensile testing machine, so that the evaluation result shows that the average peel strength is 5.4N/mm, the average cohesive failure is 96%, the specific adhesive effect is shown as figure 1, the adhesion of the experimental materials on the surface of the test pieces is perfect, and the peeling phenomenon hardly occurs;
taking a plurality of wire-cut test pieces from the aluminum alloy section produced in the control group 1, wherein the test piece is 229mm multiplied by 25mm multiplied by 2.5mm, the surface roughness Ra of the test piece is 0.721 mu m, the adhesive is Hangao Teroson 5089, the test material is adhered to the surface of the test piece by using the adhesive, the test piece is evaluated by a tensile testing machine, the evaluation result shows that the average peeling strength is 3.9N/mm, the average cohesive failure is 85%, the specific adhesive effect is shown in figure 2, the large-area peeling condition occurs between the test material and the test piece, and the adhesive condition is relatively poor;
taking a plurality of wire-cut test pieces from the aluminum alloy section produced in the control group 2, wherein the test piece is 229mm multiplied by 25mm multiplied by 2.5mm, the surface roughness Ra of the test piece is 0.848 mu m, the adhesive agent is Hangao Teroson 5089, the test material is adhered to the surface of the test piece by using the adhesive agent, and the test piece is evaluated by a tensile testing machine, wherein the evaluation result shows that the average peel strength is 5.2N/mm, the average cohesive failure is 91%, the specific adhesive effect is shown in figure 3, the adhesion of the test material on the surface of the test piece is basically perfect, but a small amount of peeling occurs;
in summary, according to the visual manifestation of the test data and the bonding condition, compared with the control group 1 and the control group 2, the aluminum alloy section bar of the test group has better average peel strength and cohesive failure effect and better bonding effect, so that the bonding performance of the aluminum alloy is improved by adding a proper amount of rare earth elements and adopting relatively higher cooling strength after quenching.
The above disclosure is only illustrative of two preferred embodiments of the present invention, and it is to be understood that the scope of the present invention is not limited thereto, and equivalent changes may be made thereto while remaining within the scope of the present invention as defined by the appended claims.
Claims (8)
1. The 6-series extruded aluminum alloy with enhanced adhesive bonding performance is characterized by comprising the following components in percentage by mass: si:0.5 to 0.9 percent, cu: less than or equal to 0.15 percent, fe:0.18 to 0.25 percent, mn:0.12 to 0.18 percent, mg:0.51 to 0.58 percent, ti:0.02 to 0.06 percent, zr: 0.02-0.08%, cr:0.05 to 0.1 percent of Er:0.2 to 0.4 percent, sc:0.3 to 0.5 percent, impurities or other elements: less than or equal to 0.05 percent, and the balance of Al.
2. A method for producing a 6-series extruded aluminum alloy with enhanced adhesive bonding properties, for producing a 6-series extruded aluminum alloy with enhanced adhesive bonding properties as set forth in claim 1, comprising the steps of:
s1: smelting various raw materials according to mass percentage to prepare aluminum alloy liquid;
s2: adding a refining agent to refine the aluminum alloy liquid;
s3: stopping heating, and standing the aluminum alloy liquid for 25-35 min;
s4: carrying out online degassing and bipolar filtering on the aluminum alloy liquid after standing;
s5: preheating casting equipment, casting aluminum alloy liquid into an aluminum alloy ingot, and introducing cooling water for cooling;
s6: reheating and melting the aluminum alloy ingot into aluminum alloy liquid, continuously preserving heat, homogenizing the aluminum alloy liquid, introducing cooling water for cooling, and re-casting the aluminum alloy liquid into an aluminum alloy rod;
s7: heating and extrusion molding the aluminum alloy ingot, and quenching and cooling the extruded aluminum alloy section;
s8: and (5) aging the aluminum alloy profile.
3. The method for producing 6-series extruded aluminum alloy with enhanced adhesion property according to claim 2, wherein the melting temperature in the step S1 is 710 to 760 ℃.
4. The method for producing a 6-series extruded aluminum alloy with enhanced cementing property according to claim 2, wherein the refining temperature in the step S2 is 720-740 ℃ and the refining time is 20-30 min, and the refining agent is a fluorine-free and sodium-free refining agent.
5. The method for producing 6-series extruded aluminum alloy with enhanced cementing property according to claim 2, wherein the preheating temperature of the casting equipment in the step S5 is 740-780 ℃, the casting speed is 70-85 mm/min, and the hydrogen content in the aluminum alloy ingot is less than 0.1mL/100g.
6. The method for producing a 6-series extruded aluminum alloy with enhanced adhesion properties according to claim 2, wherein the homogenization temperature in step S6 is 500 to 520 ℃ and the holding time is 7 to 9 hours.
7. The method for producing a 6-series extruded aluminum alloy with enhanced adhesion properties according to claim 2, wherein the extrusion temperature in the step S7 is 490 to 510 ℃, the extrusion speed is 2 to 3mm/S, and the cooling strength is 80 to 120 ℃/S.
8. The method for producing a 6-series extruded aluminum alloy with enhanced adhesion properties according to claim 2, wherein the aging treatment temperature in step S8 is 170 to 180 ℃ and the holding time is 7.5 to 8.5 hours.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311838583.0A CN117737521A (en) | 2023-12-28 | 2023-12-28 | 6-series extruded aluminum alloy with enhanced cementing property and production method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311838583.0A CN117737521A (en) | 2023-12-28 | 2023-12-28 | 6-series extruded aluminum alloy with enhanced cementing property and production method thereof |
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| CN117737521A true CN117737521A (en) | 2024-03-22 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002161326A (en) * | 2000-11-20 | 2002-06-04 | Mitsubishi Alum Co Ltd | Extrusion material of aluminum alloy for machine part superior in strength, machinability, and clinchability |
| CN108118210A (en) * | 2017-11-28 | 2018-06-05 | 中铝材料应用研究院有限公司 | A kind of processing method of aluminium alloy and its extrudate |
| CN110669964A (en) * | 2019-10-31 | 2020-01-10 | 辽宁忠旺集团有限公司 | High-performance rare earth Al-Mg-Si aluminum alloy extrusion material and preparation method thereof |
| CN112746201A (en) * | 2020-12-29 | 2021-05-04 | 佳木斯大学 | High-performance rare earth Al-Mg-Si aluminum alloy extrusion material and preparation method thereof |
| CN115948683A (en) * | 2022-12-21 | 2023-04-11 | 广东兴发铝业有限公司 | High-strength high-plasticity extruded aluminum alloy and preparation method thereof |
| WO2023218058A1 (en) * | 2022-05-13 | 2023-11-16 | Bharat Forge Global Holding Gmbh | Structural components made of an aluminium alloy, starting material and production method |
-
2023
- 2023-12-28 CN CN202311838583.0A patent/CN117737521A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002161326A (en) * | 2000-11-20 | 2002-06-04 | Mitsubishi Alum Co Ltd | Extrusion material of aluminum alloy for machine part superior in strength, machinability, and clinchability |
| CN108118210A (en) * | 2017-11-28 | 2018-06-05 | 中铝材料应用研究院有限公司 | A kind of processing method of aluminium alloy and its extrudate |
| CN110669964A (en) * | 2019-10-31 | 2020-01-10 | 辽宁忠旺集团有限公司 | High-performance rare earth Al-Mg-Si aluminum alloy extrusion material and preparation method thereof |
| CN112746201A (en) * | 2020-12-29 | 2021-05-04 | 佳木斯大学 | High-performance rare earth Al-Mg-Si aluminum alloy extrusion material and preparation method thereof |
| WO2023218058A1 (en) * | 2022-05-13 | 2023-11-16 | Bharat Forge Global Holding Gmbh | Structural components made of an aluminium alloy, starting material and production method |
| CN115948683A (en) * | 2022-12-21 | 2023-04-11 | 广东兴发铝业有限公司 | High-strength high-plasticity extruded aluminum alloy and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 吴生绪等: "《变形铝合金及其模锻成形技术手册》", 31 January 2014, 机械工业出版社, pages: 117 - 118 * |
| 李卫平等: "《航空航天结构材料》", 31 January 2022, 北京航空航天大学出版社, pages: 69 * |
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