CN114807643A - Method for preventing orange peel generated in extrusion production of aluminum alloy section - Google Patents
Method for preventing orange peel generated in extrusion production of aluminum alloy section Download PDFInfo
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- CN114807643A CN114807643A CN202210422824.2A CN202210422824A CN114807643A CN 114807643 A CN114807643 A CN 114807643A CN 202210422824 A CN202210422824 A CN 202210422824A CN 114807643 A CN114807643 A CN 114807643A
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- aluminum alloy
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- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 28
- 238000001125 extrusion Methods 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 12
- 238000005266 casting Methods 0.000 claims abstract description 14
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 10
- 239000000956 alloy Substances 0.000 claims abstract description 10
- 238000001816 cooling Methods 0.000 claims description 12
- 229910000756 V alloy Inorganic materials 0.000 claims description 9
- HIMLGVIQSDVUJQ-UHFFFAOYSA-N aluminum vanadium Chemical compound [Al].[V] HIMLGVIQSDVUJQ-UHFFFAOYSA-N 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 8
- 239000000155 melt Substances 0.000 claims description 8
- 230000032683 aging Effects 0.000 claims description 6
- 238000003723 Smelting Methods 0.000 claims description 4
- 238000009749 continuous casting Methods 0.000 claims description 4
- 238000007872 degassing Methods 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 4
- 238000010791 quenching Methods 0.000 claims description 4
- 230000000171 quenching effect Effects 0.000 claims description 4
- 238000007670 refining Methods 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 3
- 238000000265 homogenisation Methods 0.000 claims description 2
- 238000002844 melting Methods 0.000 claims description 2
- 230000008018 melting Effects 0.000 claims description 2
- 239000013078 crystal Substances 0.000 abstract description 2
- 229910052720 vanadium Inorganic materials 0.000 abstract description 2
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 abstract description 2
- 230000000704 physical effect Effects 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 6
- 238000006467 substitution reaction Methods 0.000 description 3
- 230000037303 wrinkles Effects 0.000 description 3
- 229910052804 chromium Inorganic materials 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 229910052748 manganese Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 238000004321 preservation Methods 0.000 description 1
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/026—Alloys based on aluminium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/02—Making uncoated products
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
- C22B9/05—Refining by treating with gases, e.g. gas flushing also refining by means of a material generating gas in situ
- C22B9/055—Refining by treating with gases, e.g. gas flushing also refining by means of a material generating gas in situ while the metal is circulating, e.g. combined with filtration
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/06—Making non-ferrous alloys with the use of special agents for refining or deoxidising
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/06—Alloys based on aluminium with magnesium as the next major constituent
- C22C21/08—Alloys based on aluminium with magnesium as the next major constituent with silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
- C22F1/047—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with magnesium as the next major constituent
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
- C22F1/05—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys of the Al-Si-Mg type, i.e. containing silicon and magnesium in approximately equal proportions
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Continuous Casting (AREA)
Abstract
The invention relates to the technical field of aluminum alloy, in particular to a method for preventing orange peel generated in extrusion production of an aluminum alloy section, which comprises the steps of adding vanadium element into a casting melt by changing alloy components to quickly increase crystal grains at one time, preventing extrusion pressure caused by uneven growth later, preventing orange peel generation, reducing the difficulty of subsequent work, and being easy to operate, wherein the performance of the prepared aluminum alloy section is not influenced.
Description
Technical Field
The invention relates to the technical field of aluminum alloy, in particular to a method for preventing orange peel generated in the process of producing aluminum alloy sections by extrusion.
Background
The surface of the aluminum alloy extruded profile product has uneven wrinkles, also called surface wrinkles, like orange peels, which are caused by coarse grains during extrusion, and the thicker the grains, the more obvious the wrinkles are. The main causes of orange peel are: (1) the ingot casting structure is not uniform, and the homogenization treatment is insufficient; (2) unreasonable extrusion conditions, large grains of the produced product; (3) the amount of stretching and straightening is too large.
The generation of orange peel affects not only appearance but also product performance, and the problem is also a problem which needs to be solved urgently by many aluminum alloy suppliers.
Disclosure of Invention
Aiming at the technical problem of orange peel during extrusion in the prior art, the invention provides a method for preventing orange peel from being generated in the process of producing an aluminum alloy section by extrusion, which can solve the technical problem of orange peel during extrusion forming.
The invention provides a method for preventing orange peel generated in extrusion production of aluminum alloy sections, which comprises the following steps:
(1) smelting the following components of 0.58-0.63% of Si, less than or equal to 0.15% of Fe, 0.13-0.17% of Cu, 0.06-0.10% of Mn, 0.75-0.80% of Mg, less than or equal to 0.05% of Cr, less than or equal to 0.1% of Zn, less than or equal to 0.05% of Ti, 0.25-0.3% of V and the balance of Al in weight proportion, adding an aluminum-vanadium alloy into a melt at 740-750 ℃ for melting and standing, starting an electromagnetic stirrer, stirring in a forward and reverse rotation manner, transferring into a holding furnace for refining and purifying to obtain an alloy liquid;
(2) degassing the alloy liquid by a double rotor, filtering at two stages, casting into a cast ingot in a semicontinuous way, homogenizing the cast ingot, extruding and artificially aging.
Further, in the step (1), the adding amount of the aluminum-vanadium alloy is 5% of the weight of the melt.
Further, in the step (1), the time for the forward and reverse rotation stirring of the electromagnetic stirrer is 10-15 min.
Further, in the step (2), the semi-continuous casting process is that the temperature is 690-730 ℃, and the casting speed is controlled to be 50-60 mm/min.
Further, in the step (2), the diameter of the cast ingot is 300-400 mm.
Further, in the step (2), the homogenizing process comprises the steps of preserving heat for 10-12 hours at the temperature of 550-570 ℃, and then cooling at the cooling speed of less than or equal to 150 ℃/h.
Further, in the step (2), the extrusion process comprises the steps of performing water-cooling on-line quenching at the extrusion temperature of 430-450 ℃, the product speed of 7 +/-0.5 m/min and the outlet temperature of 510-530 ℃, wherein the elongation rate is 0.5-3%.
Further, in the step (2), the artificial aging process is carried out at the temperature of 200-210 ℃ and the heat preservation time is 6 hours.
The invention has the advantages that the alloy components are changed, vanadium is added into the casting melt to rapidly increase the crystal grains at one time, the pressure on extrusion caused by later uneven growth is prevented, the orange peel is prevented, the difficulty of subsequent work is reduced, the operation is easy, and the performance of the prepared aluminum alloy section is not influenced.
Drawings
In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present invention, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
FIG. 1 photograph of the surface appearance of the finished product obtained in example 1 of the present embodiment.
FIG. 2 is a photograph showing the appearance of the surface of a finished product prepared by comparing embodiments of the present invention.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiment of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The invention discloses a method for preventing orange peel generated in the process of producing an aluminum alloy section by extrusion, which comprises the following steps:
(1) casting: smelting the materials according to the weight proportion of Si 0.6%, Fe 0.13%, Cu 0.15%, Mn 0.1%, Mg 0.76%, Cr 0.02%, Zn 0.01%, Ti 0.01%, V0.26% and the balance of Al, adding the aluminum-vanadium alloy into the melt at 745 ℃ to melt and standing for 15min, wherein the adding amount of the aluminum-vanadium alloy is 5% of the weight of the melt, starting an electromagnetic stirrer, and rotating positively and negatively for 15 min; transferring into a holding furnace for further refining and purification, and standing for 20min to obtain an alloy liquid;
(2) performing double-rotor degassing and double-stage filtration on the obtained alloy liquid, and performing semi-continuous casting at 700 ℃, wherein the casting speed is controlled to be 50-60 mm/min, and casting into a cast ingot with the diameter of 300 mm;
(3) homogenizing the cast ingot: keeping the temperature at 560 ℃ for 12 hours, and then cooling at the cooling speed of less than or equal to 150 ℃/h;
(4) extruding: the extrusion temperature is 440 ℃, the speed of the product is 7 +/-0.5 m/min, the outlet temperature is 520 ℃, water-cooling on-line quenching is carried out, and the stretching ratio is 0.5%;
(5) artificial aging: and keeping the temperature at 200-210 ℃ for 6 hours to obtain a finished product.
Table 1 shows the physical property indexes of the aluminum alloy section bar prepared in the embodiment, and it can be seen that the physical properties of the finished product meet the requirements.
TABLE 1 physical Properties of the aluminum alloy sections obtained in example 1
FIG. 1 is a photograph showing the appearance of the surface of the product obtained in this example, which shows that the surface of the product is smooth and has no orange peel.
Example 2
The invention discloses a method for preventing orange peel generated in the process of producing an aluminum alloy section by extrusion, which comprises the following steps:
(2) casting: smelting the material according to the weight proportion of Si 0.59%, Fe 0.12%, Cu 0.15%, Mn 0.09%, Mg 0.76%, Cr 0.03%, Zn 0.03%, Ti 0.01%, V0.27% and the balance of Al, adding the aluminum-vanadium alloy into the melt at 740 ℃ to melt and standing for 15min, wherein the adding amount of the aluminum-vanadium alloy is 5% of the weight of the melt, starting an electromagnetic stirrer, and rotating positively and negatively for 10 min; transferring into a holding furnace for further refining and purification, and standing for 30min to obtain an alloy liquid;
(2) performing double-rotor degassing and double-stage filtration on the obtained alloy liquid, and performing semi-continuous casting at 730 ℃, wherein the casting speed is controlled to be 50-60 mm/min, and casting into a cast ingot with the diameter of 400 mm;
(3) homogenizing the cast ingot: keeping the temperature at 570 ℃ for 10 hours, and then cooling at the cooling speed of less than or equal to 150 ℃/h;
(4) extruding: the extrusion temperature is 450 ℃, the product speed is 7 +/-0.5 m/min, the outlet temperature is 520 ℃, water-cooling on-line quenching is carried out, and the stretching ratio is 0.5%;
(5) artificial aging: and keeping the temperature at 200-210 ℃ for 6 hours to obtain a finished product.
Table 2 shows the physical property indexes of the aluminum alloy section bar prepared in the embodiment, and it can be seen that the physical properties of the finished product meet the requirements.
TABLE 2 physical Properties of the aluminum alloy sections obtained in example 2
Comparative example
Referring to example 1, a comparative example is different from example 1 in that an aluminum vanadium alloy is not added at the time of melt casting.
Table 3 shows physical property indexes of the aluminum alloy sections manufactured in the comparative examples, and it can be seen that example 1 of the present invention has physical property indexes equivalent to those of the comparative examples.
TABLE 3 physical Properties of the aluminum alloy sections obtained in the comparative examples
FIG. 2 is a photograph showing the surface appearance of the finished product of the comparative example, and it can be seen that the finished product has an orange peel phenomenon.
Although the present invention has been described in detail by referring to the drawings in connection with the preferred embodiments, the present invention is not limited thereto. Various equivalent modifications or substitutions can be made on the embodiments of the present invention by those skilled in the art without departing from the spirit and scope of the present invention, and these modifications or substitutions are within the scope of the present invention/any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention.
Claims (8)
1. The method for preventing orange peels generated in the extrusion production of the aluminum alloy sections is characterized by comprising the following steps of:
(1) smelting the following components of 0.58-0.63% of Si, less than or equal to 0.15% of Fe, 0.13-0.17% of Cu, 0.06-0.10% of Mn, 0.75-0.80% of Mg, less than or equal to 0.05% of Cr, less than or equal to 0.1% of Zn, less than or equal to 0.05% of Ti, 0.25-0.3% of V and the balance of Al in weight proportion, adding an aluminum-vanadium alloy into a melt at 740-750 ℃ for melting and standing, starting an electromagnetic stirrer, stirring in a forward and reverse rotation manner, transferring into a holding furnace for refining and purifying to obtain an alloy liquid;
(2) degassing the alloy liquid by a double rotor, filtering at two stages, casting into a cast ingot in a semicontinuous way, homogenizing the cast ingot, extruding and artificially aging.
2. The method for preventing orange peel in the extrusion production of aluminum alloy sections as claimed in claim 1, wherein in the step (1), the aluminum vanadium alloy is added in an amount of 5% by weight of the melt.
3. The method for preventing orange peel generated in the extrusion production of aluminum alloy sections according to claim 1, wherein in the step (1), the electromagnetic stirrer rotates positively and negatively for 10-15 min.
4. The method for preventing orange peel generated in the extrusion production of aluminum alloy sections according to claim 1, wherein in the step (2), the semi-continuous casting process is performed at a temperature of 690-730 ℃ and a casting speed of 50-60 mm/min.
5. The method for preventing orange peel generated in the extrusion production of aluminum alloy sections according to claim 1, wherein in the step (2), the diameter of the ingot is 300-400 mm.
6. The method for preventing orange peels generated in the extrusion production of the aluminum alloy sections as claimed in claim 1, wherein in the step (2), the homogenization process comprises the steps of keeping the temperature at 550-570 ℃ for 10-12 h, and then cooling at the cooling speed of less than or equal to 150 ℃/h.
7. The method for preventing orange peel generated in the extrusion production of aluminum alloy sections according to claim 1, wherein in the step (2), the extrusion process comprises the steps of performing water-cooling on-line quenching at the extrusion temperature of 430-450 ℃, the product speed of 7 +/-0.5 m/min and the outlet temperature of 510-530 ℃, wherein the elongation is 0.5-3%.
8. The method for preventing the orange peel generated in the extrusion production of the aluminum alloy section as claimed in claim 1, wherein in the step (2), the artificial aging process is carried out at the temperature of 200-210 ℃ for 6 h.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210422824.2A CN114807643A (en) | 2022-04-21 | 2022-04-21 | Method for preventing orange peel generated in extrusion production of aluminum alloy section |
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| CN202210422824.2A CN114807643A (en) | 2022-04-21 | 2022-04-21 | Method for preventing orange peel generated in extrusion production of aluminum alloy section |
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| CN114807643A true CN114807643A (en) | 2022-07-29 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115896505A (en) * | 2022-11-14 | 2023-04-04 | 山东裕航特种合金装备有限公司 | Preparation process of aluminum alloy for forging flange |
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2022
- 2022-04-21 CN CN202210422824.2A patent/CN114807643A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115896505A (en) * | 2022-11-14 | 2023-04-04 | 山东裕航特种合金装备有限公司 | Preparation process of aluminum alloy for forging flange |
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