CN112708806A - Aluminum alloy extruded section and preparation method thereof - Google Patents
Aluminum alloy extruded section and preparation method thereof Download PDFInfo
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- CN112708806A CN112708806A CN202011477037.5A CN202011477037A CN112708806A CN 112708806 A CN112708806 A CN 112708806A CN 202011477037 A CN202011477037 A CN 202011477037A CN 112708806 A CN112708806 A CN 112708806A
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- aluminum alloy
- cast rod
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- extruded section
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- 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
- C22C21/02—Alloys based on aluminium with silicon as the next major constituent
-
- 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
- B21C23/04—Making uncoated products by direct extrusion
-
- 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
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/22—Moulds for peculiarly-shaped castings
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0075—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for rods of limited length
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/026—Alloys based on aluminium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- 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
- C22F1/002—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working by rapid cooling or quenching; cooling agents used therefor
-
- 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
- C22F1/043—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 silicon as the next major constituent
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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)
- Extrusion Of Metal (AREA)
- Continuous Casting (AREA)
Abstract
The invention relates to the technical field of aluminum alloy materials, in particular to an aluminum alloy extruded section and a preparation method thereof. The 6005 aluminum alloy extruded section with the thickness of 1.4-1.6mm is produced by the traditional high-temperature extrusion processing technology, the surface quality and the mechanical strength of the extruded section can be ensured only by adopting the lower extrusion speed of 18-20m/min, and the productivity is lower. Aiming at the problems, the invention provides an aluminum alloy extruded section, which is characterized in that the 6005 aluminum alloy element content is optimized, and the traditional 6005 aluminum alloy extruded section processing technology is changed, so that the optimized aluminum alloy formula can be extruded at the extrusion speed of 25 +/-1 m/min, the productivity is effectively improved, and the surface quality and the mechanical property of the obtained aluminum alloy extruded section both reach the use standard of a solar cell panel supporting frame.
Description
Technical Field
The invention relates to the technical field of aluminum alloy materials, in particular to an aluminum alloy extruded section and a preparation method thereof.
Background
The solar cell panel in the photovoltaic industry in the early market is small in size, the requirements on the material of a frame for supporting the solar cell panel are not too high, and the 6063 aluminum alloy extruded section with lower strength, hardness and thickness (1.8-2.0mm) can meet the requirements. With continuous innovation of a photovoltaic market on a solar cell panel, the size of the solar cell panel manufactured at present becomes larger and larger, and the mechanical property of the 6063 aluminum alloy extruded section with the same thickness used originally cannot reach the standard of normal use. In view of the above problems, it is easy to think of a solution that the 6063 aluminum alloy extruded profile used as the supporting frame of the solar panel is thickened, but the cost is increased as a result.
In recent years, by trying other high-strength aluminum alloy extruded sections, it is found that the mechanical property of the 6005 aluminum alloy extruded section with the thickness of 1.4-1.6mm as a solar cell panel supporting frame can completely meet the requirement of large-size solar cell panels on the market at present. However, the 6005 aluminum alloy extruded profile with the thickness of 1.4-1.6mm is produced by adopting the traditional high-temperature extrusion processing technology, the surface quality and the mechanical strength of the extruded profile can be ensured only by adopting the lower extrusion speed of 18-20m/min (the original extrusion speed of 6063 aluminum alloy is 28m/min), the productivity is lower, and the productivity is reduced by 20-25% compared with the productivity when the 6063 aluminum alloy extruded profile with the thickness of 1.8-2.0mm is used as the solar cell panel supporting frame, so that the productivity can be effectively improved only by improving the extrusion speed of the 6005 aluminum alloy under the condition of ensuring that the mechanical property of the 6005 aluminum alloy extruded profile is not reduced.
Disclosure of Invention
Aiming at the problems in the prior art, the technical problems to be solved by the invention are as follows: the 6005 aluminum alloy extruded section with the thickness of 1.4-1.6mm is produced by the traditional high-temperature extrusion processing technology, the surface quality and the mechanical strength of the extruded section can be ensured only by adopting the lower extrusion speed of 18-20m/min, and the productivity is lower.
The technical scheme adopted by the invention for solving the technical problems is as follows: the invention provides an aluminum alloy extruded section, which comprises the following metal element components in percentage by mass:
specifically, the aluminum alloy extruded section comprises the following metal element components in percentage by mass:
specifically, the aluminum alloy extruded section is prepared according to the following steps:
(1) preparing a casting rod: preparing raw materials according to the formula amount;
(2) smelting a cast rod: the ingredients are put into a smelting furnace in sequence for smelting, the temperature in the furnace is controlled to be 710-760 ℃, and a smelting agent is used for refining and covering; after feeding for 30-60 min, starting stirring when molten aluminum appears in the furnace, injecting molten aluminum into a holding furnace from a smelting furnace after refining and slagging off to obtain qualified components, standing the holding furnace at 720-750 ℃ for 20-30min, and then bringing hydrogen and fine impurities in the molten aluminum to the surface by using argon gas, thereby reducing the hydrogen content in the molten aluminum:
(3) casting a cast rod: adopting oil-slip casting, controlling the casting temperature at 680-720 ℃, controlling the casting speed at 26-42mm/min, and controlling the flow of casting cooling water at 950-1250L/min;
(4) homogenizing: homogenizing treatment in homogenizing furnace at 550 + -10 deg.C for 10 hr;
(5) surface treatment of the cast rod: turning the surface of the cast rod by 10mm, wherein the surface roughness Ra is not less than 6.3 mu m;
(6) heating a cast rod: heating the cast rod in a hot shearing furnace, wherein the heating temperature of the cast rod in the furnace is 480-510 ℃, and the heat preservation time is 1-2 h;
(7) heating a mould: the mold is insulated for 2-3h at the temperature of 420-;
(8) adjusting the temperature of the cast rod before extrusion: after the cast rod is sheared from the hot shearing furnace, the cast rod is placed in the atmospheric environment and naturally cooled until the skin temperature of the cast rod is 415-430 ℃ so as to enter the subsequent extrusion process;
(9) extrusion production: after preheating of the cast rod obtained in the step (8) and the die obtained in the step (7), starting extrusion, wherein the extrusion speed is 25 +/-1 m/min;
(10) online quenching: the temperature of the extruded section bar outlet die is 510-530 ℃, and then the extruded section bar enters a quenching area, wherein the quenching mode is strong air cooling, so that a high supersaturated solid solution is ensured to be obtained by a matrix;
(11) aging of the section bar: aging within 4h after the extrusion is finished, wherein the aging temperature is 180 +/-5 ℃, and the heat preservation time is 4h, thus obtaining the aluminum alloy extruded section with the thickness of 1.4-1.6 mm.
The invention has the beneficial effects that:
according to the invention, the 6005 aluminum alloy element content is optimized, and the traditional 6005 aluminum alloy extruded section processing technology is changed, so that the optimized aluminum alloy formula can be extruded at the extrusion speed of 25 +/-1 m/min, the productivity is effectively improved, and the surface quality and the mechanical property of the obtained aluminum alloy extruded section can reach the use standard of the solar cell panel supporting frame.
Detailed Description
The present invention will now be described in further detail with reference to examples.
The aluminum alloy extruded section of the following example of the invention was prepared according to the following steps:
(1) preparing a casting rod: preparing raw materials according to the formula amount;
(2) smelting a cast rod: the ingredients are put into a smelting furnace in sequence for smelting, the temperature in the furnace is controlled to be 710-760 ℃, and a smelting agent is used for refining and covering; after feeding for 30-60 min, starting stirring when molten aluminum appears in the furnace, injecting molten aluminum into a holding furnace from a smelting furnace after refining and slagging off to obtain qualified components, standing the holding furnace at 720-750 ℃ for 20-30min, and then bringing hydrogen and fine impurities in the molten aluminum to the surface by using argon gas, thereby reducing the hydrogen content in the molten aluminum:
(3) casting a cast rod: adopting oil-slip casting, controlling the casting temperature at 680-720 ℃, controlling the casting speed at 26-42mm/min, and controlling the flow of casting cooling water at 950-1250L/min;
(4) homogenizing: homogenizing treatment in homogenizing furnace at 550 + -10 deg.C for 10 hr;
(5) surface treatment of the cast rod: turning the surface of the cast rod by 10mm, wherein the surface roughness Ra is not less than 6.3 mu m;
(6) heating a cast rod: heating the cast rod in a hot shearing furnace, wherein the heating temperature of the cast rod in the furnace is 480-510 ℃, and the heat preservation time is 1-2 h;
(7) heating a mould: the mold is insulated for 2-3h at the temperature of 420-;
(8) adjusting the temperature of the cast rod before extrusion: after the cast rod is sheared from the hot shearing furnace, the cast rod is placed in the atmospheric environment and naturally cooled until the skin temperature of the cast rod is 415-430 ℃ so as to enter the subsequent extrusion process;
(9) extrusion production: after preheating of the cast rod obtained in the step (8) and the die obtained in the step (7), starting extrusion, wherein the extrusion speed is 25 +/-1 m/min;
(10) online quenching: the temperature of the extruded section bar outlet die is 510-530 ℃, and then the extruded section bar enters a quenching area, wherein the quenching mode is strong air cooling, so that a high supersaturated solid solution is ensured to be obtained by a matrix;
(11) aging of the section bar: aging within 4h after the extrusion is finished, wherein the aging temperature is 180 +/-5 ℃, and the heat preservation time is 4h, thus obtaining the aluminum alloy extruded section with the thickness of 1.4-1.6 mm.
Example 1
The aluminum alloy extruded section comprises the following metal element components in percentage by mass:
example 2
The aluminum alloy extruded section comprises the following metal element components in percentage by mass:
example 3
The aluminum alloy extruded section comprises the following metal element components in percentage by mass:
example 4
The aluminum alloy extruded section comprises the following metal element components in percentage by mass:
example 5
The aluminum alloy extruded section comprises the following metal element components in percentage by mass:
comparative example 1 differs from example 1 in that: the mass percentage of Mg added in comparative example 1 was 0.6%.
Comparative example 2 differs from example 1 in that: the Mg addition mass percentage in comparative example 2 was 0.4%.
Comparative example 3 differs from example 1 in that: in comparative example 3, the added mass percentage of Fe is 0.35%.
Comparative example 4 differs from example 1 in that: comparative example 4 there was no step of adjusting the temperature of the cast bar before extrusion, and the cast bar was cut from the hot shearing furnace and directly subjected to the subsequent extrusion process.
And (3) performance testing:
the mechanical properties of the aluminum alloy extruded sections prepared in examples 1 to 3 and comparative examples 1 to 4 of the present invention were measured according to GB/T6892-2006, and the mechanical properties and the yield thereof are shown in Table 1:
TABLE 1
Note: industry standards specify the nonproportional elongation strength R of extruded aluminum alloy profiles as solar panel support framesp0.2≥240N/mm2Tensile strength Rm≥260N/mm2Elongation after Break A50mmNot less than 8 percent and the surface hardness not less than 15 HW.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (3)
1. The aluminum alloy extruded section is characterized by comprising the following metal element components in percentage by mass:
2. the aluminum alloy extruded profile according to claim 1, comprising the following metal element components in mass percent:
3. an aluminium alloy extrusion of claim 1 or 2, prepared according to the following steps:
(1) preparing a casting rod: preparing raw materials according to the formula amount;
(2) smelting a cast rod: the ingredients are put into a smelting furnace in sequence for smelting, the temperature in the furnace is controlled to be 710-760 ℃, and a smelting agent is used for refining and covering; after feeding for 30-60 min, starting stirring when molten aluminum appears in the furnace, injecting molten aluminum into a holding furnace from a smelting furnace after refining and slagging off to obtain qualified components, standing the holding furnace at 720-750 ℃ for 20-30min, and then bringing hydrogen and fine impurities in the molten aluminum to the surface by using argon gas, thereby reducing the hydrogen content in the molten aluminum:
(3) casting a cast rod: adopting oil-slip casting, controlling the casting temperature at 680-720 ℃, controlling the casting speed at 26-42mm/min, and controlling the flow of casting cooling water at 950-1250L/min;
(4) homogenizing: homogenizing treatment in homogenizing furnace at 550 + -10 deg.C for 10 hr;
(5) surface treatment of the cast rod: turning the surface of the cast rod by 10mm, wherein the surface roughness Ra is not less than 6.3 mu m;
(6) heating a cast rod: heating the cast rod in a hot shearing furnace, wherein the heating temperature of the cast rod in the furnace is 480-510 ℃, and the heat preservation time is 1-2 h;
(7) heating a mould: the mold is insulated for 2-3h at the temperature of 420-;
(8) adjusting the temperature of the cast rod before extrusion: after the cast rod is sheared from the hot shearing furnace, the cast rod is placed in the atmospheric environment and naturally cooled until the skin temperature of the cast rod is 415-430 ℃ so as to enter the subsequent extrusion process;
(9) extrusion production: after preheating of the cast rod obtained in the step (8) and the die obtained in the step (7), starting extrusion, wherein the extrusion speed is 25 +/-1 m/min;
(10) online quenching: the temperature of the extruded section bar outlet die is 510-530 ℃, and then the extruded section bar enters a quenching area, wherein the quenching mode is strong air cooling, so that a high supersaturated solid solution is ensured to be obtained by a matrix;
(11) aging of the section bar: aging within 4h after the extrusion is finished, wherein the aging temperature is 180 +/-5 ℃, and the heat preservation time is 4h, thus obtaining the aluminum alloy extruded section with the thickness of 1.4-1.6 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202011477037.5A CN112708806A (en) | 2020-12-15 | 2020-12-15 | Aluminum alloy extruded section and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011477037.5A CN112708806A (en) | 2020-12-15 | 2020-12-15 | Aluminum alloy extruded section and preparation method thereof |
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| CN112708806A true CN112708806A (en) | 2021-04-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112481527A (en) * | 2019-09-12 | 2021-03-12 | 晟通科技集团有限公司 | 6XXX series aluminum alloy round ingot and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5655546A (en) * | 1979-10-08 | 1981-05-16 | Kaimeishindou Kk | High strength aluminum alloy for extrusion |
| CN102489974B (en) * | 2011-12-31 | 2014-07-30 | 辽宁忠旺集团有限公司 | Method for manufacturing aluminum alloy section for top plate of rail transit vehicle body |
| CN108950322A (en) * | 2018-07-19 | 2018-12-07 | 中铝萨帕特种铝材（重庆）有限公司 | A kind of rail transit vehicle body thin-walled 6 is aluminum profile and preparation method thereof |
| CN109457147A (en) * | 2018-12-28 | 2019-03-12 | 辽宁忠旺集团有限公司 | A kind of aluminum strap and its production technology |
-
2020
- 2020-12-15 CN CN202011477037.5A patent/CN112708806A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5655546A (en) * | 1979-10-08 | 1981-05-16 | Kaimeishindou Kk | High strength aluminum alloy for extrusion |
| CN102489974B (en) * | 2011-12-31 | 2014-07-30 | 辽宁忠旺集团有限公司 | Method for manufacturing aluminum alloy section for top plate of rail transit vehicle body |
| CN108950322A (en) * | 2018-07-19 | 2018-12-07 | 中铝萨帕特种铝材（重庆）有限公司 | A kind of rail transit vehicle body thin-walled 6 is aluminum profile and preparation method thereof |
| CN109457147A (en) * | 2018-12-28 | 2019-03-12 | 辽宁忠旺集团有限公司 | A kind of aluminum strap and its production technology |
Non-Patent Citations (1)
| Title |
|---|
| 许建胜: "浅谈如何提高挤压生产效率", 《第四届广东铝加工技术国际研讨会论文集》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112481527A (en) * | 2019-09-12 | 2021-03-12 | 晟通科技集团有限公司 | 6XXX series aluminum alloy round ingot and preparation method thereof |
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Application publication date: 20210427 |