CN114774814A - 6-series aluminum-magnesium-silicon alloy bar homogenizing heat treatment process - Google Patents
6-series aluminum-magnesium-silicon alloy bar homogenizing heat treatment process Download PDFInfo
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- CN114774814A CN114774814A CN202210269892.XA CN202210269892A CN114774814A CN 114774814 A CN114774814 A CN 114774814A CN 202210269892 A CN202210269892 A CN 202210269892A CN 114774814 A CN114774814 A CN 114774814A
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 52
- 238000000034 method Methods 0.000 title claims abstract description 47
- 230000008569 process Effects 0.000 title claims abstract description 44
- 229910000676 Si alloy Inorganic materials 0.000 title claims abstract description 26
- -1 aluminum-magnesium-silicon Chemical compound 0.000 title claims abstract description 26
- 238000004321 preservation Methods 0.000 claims abstract description 58
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 14
- 239000000956 alloy Substances 0.000 claims abstract description 14
- 238000001816 cooling Methods 0.000 claims description 36
- 239000000463 material Substances 0.000 claims description 14
- 239000003595 mist Substances 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 229910021365 Al-Mg-Si alloy Inorganic materials 0.000 claims description 4
- 238000000265 homogenisation Methods 0.000 abstract description 9
- 230000005496 eutectics Effects 0.000 abstract description 8
- 238000005204 segregation Methods 0.000 abstract description 5
- 239000011159 matrix material Substances 0.000 abstract description 3
- 230000006872 improvement Effects 0.000 abstract description 2
- 239000002245 particle Substances 0.000 abstract description 2
- 210000001787 dendrite Anatomy 0.000 abstract 1
- 229910000838 Al alloy Inorganic materials 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 6
- 239000010949 copper Substances 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 229910017639 MgSi Inorganic materials 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 230000000630 rising effect Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000001000 micrograph Methods 0.000 description 2
- 229910019064 Mg-Si Inorganic materials 0.000 description 1
- 229910019406 Mg—Si Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
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- 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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- 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
Abstract
The invention relates to a bar homogenizing heat treatment process of 6-series aluminum-magnesium-silicon alloy, belonging to the technical field of 6-series aluminum-magnesium-silicon alloy heat treatment. The heat treatment process adopts three-stage temperature type treatment, and specifically comprises the following steps: the first stage temperature is 347-; the temperature of the second stage is 487-493 ℃, and the heat preservation time is 2.9-3.1 h; the temperature of the third section is 557-. Compared with the traditional homogenization heat treatment process, the structure segregation of the product is improved, the dendrites in the cast structure are basically eliminated, the non-equilibrium eutectic structure at the grain boundary is dissolved in the matrix or is transformed into particles, and the area fraction of the eutectic phase is reduced. The product has no component segregation, and all the alloy elements are uniformly distributed. The improvement of the structure inevitably improves the alloy performance, the strength and the plasticity of the alloy after heat treatment are improved, and the hardness and the conductivity are reduced.
Description
Technical Field
The invention belongs to the technical field of 6-series aluminum-magnesium-silicon alloy heat treatment, and particularly relates to a 6-series aluminum-magnesium-silicon alloy bar homogenizing heat treatment process.
Background
The Al-Mg-Si alloy is 6XXX series aluminum alloy and is heat treatment wrought aluminum alloy. However, the problem of poor subsequent deformability of the aluminum alloy due to the non-uniformity of the structure and components caused by the non-equilibrium eutectic phase in the as-cast aluminum alloy has been a bottleneck restricting the formability of the A1-Mg-Si based aluminum alloy. In order to improve the hot workability of as-cast aluminum alloys and to substantially eliminate the non-equilibrium eutectic phase in the as-cast material, a homogeneous heat treatment process is generally employed. Aluminum alloys are very sensitive to homogenization heat treatment, and different homogenization processes can easily cause obvious deviation of material properties. Therefore, for 6-series aluminum-magnesium-silicon alloy with a complex alloy system, the establishment of an effective homogeneous heat treatment process is a firm foundation for the subsequent processing development.
The prior homogenizing heat treatment process has the following defects: 1. the room temperature of the existing homogenizing heat treatment process is directly increased to 560 ℃, and then heat preservation is carried out, the temperature uniformity of the heat treatment process in the early stage of heat preservation is poor, and the homogenizing may not be thorough under the condition that the heat preservation time at 560 ℃ is the same; 2. the low-melting point copper-containing phase cannot be sufficiently redissolved.
Therefore, how to overcome the defects of the prior art is an urgent problem to be solved in the technical field of heat treatment of the current 6-series aluminum-magnesium-silicon alloy.
Disclosure of Invention
The invention aims to solve the defects of the prior art and provide a 6-series aluminum-magnesium-silicon alloy bar homogenizing heat treatment process, compared with the traditional homogenizing heat treatment process, the structure segregation of a product is improved, dendritic crystals in an as-cast structure are basically eliminated, an unbalanced eutectic structure at a crystal boundary is dissolved in a matrix or is transformed into particles, and the area fraction of the eutectic phase is reduced. The product has no component segregation, and all the alloy elements are uniformly distributed. The improvement of the structure inevitably improves the alloy performance, the strength and the plasticity of the alloy after heat treatment are improved, and the hardness and the conductivity are reduced.
In order to realize the purpose, the technical scheme adopted by the invention is as follows:
a6-series aluminum-magnesium-silicon alloy bar material homogenizing heat treatment process adopts three-stage temperature type treatment, and specifically comprises the following steps: the first stage temperature is 347-; the temperature of the second section is 487-493 ℃, and the heat preservation time is 2.9-3.1 h; the temperature of the third section is 557-.
Further, preferably, the heat treatment process adopts three-stage temperature type treatment, specifically: the first stage temperature is 350 ℃, and the heat preservation time is 2.5 h; the temperature of the second section is 490 ℃, and the heat preservation time is 3 h; the temperature of the third section is 560 ℃, and the heat preservation time is 10 h.
Further, it is preferable that, in the heat treatment, the temperature rising time from room temperature to the first stage temperature is controlled to 0.9 to 1.1 hours, the temperature rising time from the first stage temperature to the second stage temperature is controlled to 1.9 to 2.1 hours, and the temperature rising time from the second stage temperature to the third stage temperature is controlled to 0.9 to 1.1 hours.
Further, it is preferable that the temperature rise time from room temperature to the first stage temperature of 350 ℃ is controlled to 1 hour, the temperature rise time from the first stage temperature of 350 ℃ to the second stage temperature of 490 ℃ is controlled to 2 hours, and the temperature rise time from the second stage temperature of 490 ℃ to the third stage temperature of 560 ℃ is controlled to 1 hour in the heat treatment.
Further, preferably, after the temperature preservation of the third section is finished, cooling to 197-.
Further, preferably, after the temperature of the third section is kept, cooling to 200 ℃ by adopting an air cooling mode, and then cooling to normal temperature by using water mist instead, wherein the cooling rate of air cooling is controlled at 200 ℃/h.
The problems of the invention all refer to the temperature of the bar, and the temperature control range is +/-3 ℃.
Compared with the prior art, the invention has the following beneficial effects:
after the heat treatment process of the invention, the segregation of the cast structure of the 6-series aluminum-magnesium-silicon alloy bar is improved, the dendritic crystal in the cast structure is basically eliminated, one part of the unbalanced eutectic structure existing in the grain boundary is dissolved in the matrix, the other part of the unbalanced eutectic structure is subjected to phase change and is converted into granules from a strip shape, and the integral number of the second phase surface is reduced. The alloy elements in the product are gradually uniform, the nonuniformity of component distribution is reduced, and the homogenization of the alloy elements can be realized. In the aspect of alloy performance, the strength and plasticity of the alloy after heat treatment are improved, and the hardness and conductivity are reduced.
Under the prior art condition, the produced aluminum bar has the tensile strength of between 148 and 155MPa and the elongation of between 28 and 31 percent; after the technology is applied, the tensile strength of the produced aluminum rod is between 152 and 165MPa, the elongation is between 30 and 35 percent, and the physical property is greatly improved. The homogenization time is 22 hours per heat under the prior art condition, and after the technology of the invention is applied, the homogenization time is 18 hours per heat, the homogenization efficiency is improved, the homogenization time is shortened, the consumption of natural gas is reduced, and the cost is correspondingly reduced.
Drawings
FIG. 1 is an electron microscope image of a bar of a 6-series Al-Mg-Si alloy produced by the prior art; the scale is 100 μm;
FIG. 2 is an electron microscope image of a 6-series Al-Mg-Si alloy bar obtained by the method of the present invention.
Detailed Description
The present invention will be described in further detail with reference to examples.
It will be appreciated by those skilled in the art that the following examples are illustrative of the invention only and should not be taken as limiting the scope of the invention. Those skilled in the art will recognize that the specific techniques or conditions, not specified in the examples, are according to the techniques or conditions described in the literature of the art or according to the product specification. The materials or equipment used are not indicated by manufacturers, but are all conventional products available by purchase.
Example 1
A6-series aluminum-magnesium-silicon alloy bar homogenizing heat treatment process adopts three-stage temperature type treatment, and specifically comprises the following steps: the temperature of the first stage is 347 ℃, and the heat preservation time is 2.6 h; the temperature of the second stage is 487 ℃, and the heat preservation time is 2.9 h; the temperature of the third section is 557 ℃, and the heat preservation time is 10.2 h.
Example 2
A6-series aluminum-magnesium-silicon alloy bar homogenizing heat treatment process adopts three-stage temperature type treatment, and specifically comprises the following steps: the first stage temperature is 353 ℃, and the heat preservation time is 2.4 h; the temperature of the second stage is 493 ℃, and the heat preservation time is 2.9 h; the temperature of the third section is 563 ℃, and the heat preservation time is 9.8 h.
Example 3
A6-series aluminum-magnesium-silicon alloy bar homogenizing heat treatment process adopts three-stage temperature type treatment, and specifically comprises the following steps: the heat treatment process adopts three-stage temperature type treatment, and specifically comprises the following steps: the first stage temperature is 350 ℃, and the heat preservation time is 2.5 h; the temperature of the second section is 490 ℃, and the heat preservation time is 3 hours; the temperature of the third section is 560 ℃, and the heat preservation time is 10 h.
Example 4
A6-series aluminum-magnesium-silicon alloy bar material homogenizing heat treatment process adopts three-stage temperature type treatment, and specifically comprises the following steps: controlling the temperature rise time from room temperature to the first section temperature to be 0.9h, wherein the first section temperature is 353 ℃, and the heat preservation time is 2.4 h; controlling the temperature rise time from the first-stage temperature to the second-stage temperature to be 1.9h, controlling the second-stage temperature to be 493 ℃ and the heat preservation time to be 2.9 h; the temperature rise time from the second-stage temperature to the third-stage temperature is controlled to be 0.9h, the third-stage temperature is 563 ℃, and the heat preservation time is 9.8 h.
Example 5
A6-series aluminum-magnesium-silicon alloy bar material homogenizing heat treatment process adopts three-stage temperature type treatment, and specifically comprises the following steps: controlling the temperature rise time from room temperature to the first section temperature to be 1.1h, controlling the first section temperature to be 347 ℃, and controlling the heat preservation time to be 2.6 h; controlling the temperature rise time from the first-stage temperature to the second-stage temperature to be 2.1h, controlling the second-stage temperature to be 487 ℃, and controlling the heat preservation time to be 3.1 h; the temperature rise time from the second-stage temperature to the third-stage temperature is controlled to be 1.1h, the third-stage temperature is 557 ℃, and the heat preservation time is 10.2 h.
Example 6
A6-series aluminum-magnesium-silicon alloy bar homogenizing heat treatment process adopts three-stage temperature type treatment, and specifically comprises the following steps: controlling the temperature rise time from room temperature to the first section temperature to be 1h, wherein the first section temperature is 350 ℃, and the heat preservation time is 2.5 h; controlling the temperature rise time from the first-stage temperature to the second-stage temperature to be 2h, controlling the second-stage temperature to be 490 ℃, and controlling the heat preservation time to be 3 h; the temperature rise time from the second-stage temperature to the third-stage temperature is controlled to be 1h, the third-stage temperature is 560 ℃, and the heat preservation time is 10 h.
Example 7
A6-series aluminum-magnesium-silicon alloy bar homogenizing heat treatment process adopts three-stage temperature type treatment, and specifically comprises the following steps: controlling the temperature rise time from room temperature to the first section temperature to be 0.9h, wherein the first section temperature is 347 ℃, and the heat preservation time is 2.4 h; controlling the temperature rise time from the first-stage temperature to the second-stage temperature to be 1.9h, controlling the second-stage temperature to be 487 ℃, and controlling the heat preservation time to be 2.9 h; the temperature rise time from the second section temperature to the third section temperature is controlled to be 0.9h, the third section temperature is 557 ℃, the heat preservation time is 9.8h, after the third section temperature is preserved, the third section temperature is cooled to 197 ℃ by adopting an air cooling mode and then is cooled to normal temperature by using water mist, and the cooling rate of air cooling is controlled to be 197 ℃/h.
Example 8
A6-series aluminum-magnesium-silicon alloy bar homogenizing heat treatment process adopts three-stage temperature type treatment, and specifically comprises the following steps: controlling the temperature rise time from room temperature to the first section temperature to be 1.1h, controlling the first section temperature to be 353 ℃, and keeping the temperature for 2.6 h; controlling the temperature rise time from the first stage temperature to the second stage temperature to be 2.1h, controlling the second stage temperature to be 493 ℃, and controlling the heat preservation time to be 2.9-3.1 h; the temperature rise time from the second section temperature to the third section temperature is controlled to be 0.9-1.1h, the third section temperature is 563 ℃, the heat preservation time is 10.2h, after the third section temperature is preserved, the third section temperature is cooled to 203 ℃ by adopting an air cooling mode and then is cooled to normal temperature by changing into water mist, and the cooling rate of air cooling is controlled to be 203 ℃/h.
Example 9
A6-series aluminum-magnesium-silicon alloy bar material homogenizing heat treatment process adopts three-stage temperature type treatment, and specifically comprises the following steps: controlling the temperature rise time from room temperature to the first section temperature to be 1h, wherein the first section temperature is 350 ℃, and the heat preservation time is 2.5 h; controlling the temperature rise time from the first-stage temperature to the second-stage temperature to be 2 hours, controlling the second-stage temperature to be 490 ℃, and controlling the heat preservation time to be 3 hours; and the temperature rise time from the second section temperature to the third section temperature is controlled to be 1h, the third section temperature is 560 ℃, the heat preservation time is 10h, after the heat preservation of the third section temperature is finished, the third section temperature is cooled to 200 ℃ by adopting an air cooling mode, then the third section temperature is cooled to normal temperature by adopting water mist, and the cooling rate of air cooling is controlled to be 200 ℃/h.
Comparative example 1
A6-series aluminum-magnesium-silicon alloy bar homogenizing heat treatment process adopts three-stage temperature type treatment, and specifically comprises the following steps: controlling the temperature rise time from room temperature to the first section temperature to be 1h, controlling the first section temperature to be 330 ℃, and controlling the heat preservation time to be 2.5 h; controlling the temperature rise time from the first-stage temperature to the second-stage temperature to be 2 hours, controlling the second-stage temperature to be 470 ℃, and controlling the heat preservation time to be 3 hours; the temperature rise time from the second section temperature to the third section temperature is controlled to be 1h, the third section temperature is 530 ℃, the heat preservation time is 10h, after the heat preservation of the third section temperature is finished, the third section temperature is cooled to 200 ℃ by adopting an air cooling mode, then the third section temperature is cooled to normal temperature by adopting water mist, and the cooling rate of air cooling is controlled to be 200 ℃/h.
Comparative example 2
A6-series aluminum-magnesium-silicon alloy bar material homogenizing heat treatment process adopts three-stage temperature type treatment, and specifically comprises the following steps: controlling the temperature rise time from room temperature to the first section temperature to be 1h, controlling the first section temperature to be 400 ℃, and controlling the heat preservation time to be 2.5 h; controlling the temperature rise time from the first stage temperature to the second stage temperature to be 2h, controlling the second stage temperature to be 520 ℃, and controlling the heat preservation time to be 3 h; the temperature rise time from the second section temperature to the third section temperature is controlled to be 1h, the third section temperature is 580 ℃, the heat preservation time is 10h, after the heat preservation of the third section temperature is finished, the third section temperature is cooled to 200 ℃ by adopting an air cooling mode, then the third section temperature is cooled to normal temperature by adopting water mist, and the cooling rate of air cooling is controlled to be 200 ℃/h.
Comparative example 3
A6-series aluminum-magnesium-silicon alloy bar material homogenizing heat treatment process adopts three-stage temperature type treatment, and specifically comprises the following steps: controlling the temperature rise time from room temperature to the first section temperature to be 1h, controlling the first section temperature to be 350 ℃, and controlling the heat preservation time to be 2 h; controlling the temperature rise time from the first-stage temperature to the second-stage temperature to be 2h, controlling the second-stage temperature to be 490 ℃, and controlling the heat preservation time to be 2 h; and the temperature rise time from the second section temperature to the third section temperature is controlled to be 1h, the third section temperature is 560 ℃, the heat preservation time is 8h, after the heat preservation of the third section temperature is finished, the third section temperature is cooled to 200 ℃ by adopting an air cooling mode, then the third section temperature is cooled to normal temperature by adopting water mist, and the cooling rate of air cooling is controlled to be 200 ℃/h.
Comparative example 4
A6-series aluminum-magnesium-silicon alloy bar material homogenizing heat treatment process adopts three-stage temperature type treatment, and specifically comprises the following steps: controlling the temperature rise time from room temperature to the first section temperature to be 1h, controlling the first section temperature to be 350 ℃, and controlling the heat preservation time to be 3 h; controlling the temperature rise time from the first-stage temperature to the second-stage temperature to be 2h, controlling the second-stage temperature to be 490 ℃, and controlling the heat preservation time to be 5 h; the temperature rise time from the second section temperature to the third section temperature is controlled to be 1h, the third section temperature is 560 ℃, the heat preservation time is 12h, after the heat preservation of the third section temperature is finished, the third section temperature is cooled to 200 ℃ by adopting an air cooling mode, then the third section temperature is cooled to normal temperature by adopting water mist, and the cooling rate of air cooling is controlled to be 200 ℃/h.
Comparative example 5
A6-series aluminum-magnesium-silicon alloy bar material homogenizing heat treatment process adopts three-stage temperature type treatment, and specifically comprises the following steps: controlling the temperature rise time from room temperature to the first section temperature to be 1h, wherein the first section temperature is 350 ℃, and the heat preservation time is 2.5 h; controlling the temperature rise time from the first-stage temperature to the second-stage temperature to be 2h, controlling the second-stage temperature to be 490 ℃, and controlling the heat preservation time to be 3 h; and controlling the temperature rise time from the second section temperature to the third section temperature to be 1h, controlling the third section temperature to be 560 ℃, keeping the temperature for 10h, and cooling to the normal temperature by adopting an air cooling mode after the third section temperature is kept.
Performance detection
The prior art is compared with inventive example 7, as shown in figure 1, figure 2 and table 1. Table 1 shows that the same raw materials are adopted, except that the homogenizing heat treatment process is different (the traditional homogenizing heat treatment process is adopted in the prior art), the rest raw materials are the same, and the tests are carried out for 15 times, wherein the raw materials in each test are the same, and the component contents of the raw materials in different tests are slightly different.
TABLE 1
As can be seen in fig. 1, there is a small amount of MgSi phase after the prior art treatment, the Fe-containing phase is discontinuous, but the copper-containing phase is not fully redissolved. In FIG. 2, point 1 is an MgSi-containing phase, point 2 is an Fe-containing phase, and no Cu-containing phase is observed. After the high-strength 6xxx alloy is subjected to the homogenization system, Cu contained loss is eliminated, a small amount of MgSi phase still exists, Fe contained phase is interrupted, and the overburning phenomenon does not exist, so that the effect is better.
The comparative example was compared with example 9, and the results of the measurements are shown in Table 2. The same except for the different process parameters of the homogenizing heat treatment.
Table 2.
After the heat treatment process disclosed by the invention, the strength and plasticity of the alloy after heat treatment are improved, and the economic benefit is remarkable.
The foregoing shows and describes the general principles, principal features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. A6-series aluminum-magnesium-silicon alloy bar homogenizing heat treatment process is characterized in that the heat treatment process adopts three-stage temperature type treatment, and specifically comprises the following steps: the first stage temperature is 347-; the temperature of the second stage is 487-493 ℃, and the heat preservation time is 2.9-3.1 h; the temperature of the third section is 557-.
2. The homogeneous heat treatment process for the rod material of the Al-Mg-Si alloy as claimed in claim 1, wherein the heat treatment process adopts three-stage temperature treatment, which comprises the following steps: the first stage temperature is 350 ℃, and the heat preservation time is 2.5 h; the temperature of the second section is 490 ℃, and the heat preservation time is 3 h; the temperature of the third section is 560 ℃, and the heat preservation time is 10 h.
3. The process of claim 1, wherein the temperature of the rod is controlled to be 0.9-1.1h from room temperature to the first temperature, 1.9-2.1h from the first temperature to the second temperature, and 0.9-1.1h from the second temperature to the third temperature during the heat treatment.
4. The process of claim 3, wherein the temperature of the rod is raised from room temperature to 350 ℃ for 1 hour, the temperature of the rod is raised from 350 ℃ to 490 ℃ for 2 hours, and the temperature of the rod is raised from 490 ℃ to 560 ℃ for 1 hour.
5. The process for carrying out the homogeneous heat treatment on the rod material which is made of the AlMgSi alloy as claimed in claim 1 or 3, wherein after the temperature of the third section is maintained, the rod material is cooled to 197-203 ℃ by adopting an air cooling mode, and then is cooled to the normal temperature by using water mist, and the cooling rate of the air cooling is controlled at 197-203 ℃/h.
6. The process of claim 5, wherein after the temperature of the third section is maintained, the bar is cooled to 200 ℃ by air cooling, and then cooled to room temperature by water mist cooling, and the cooling rate of the air cooling is controlled at 200 ℃/h.
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| CN108220843A (en) * | 2018-01-02 | 2018-06-29 | 丛林集团有限公司 | A kind of classification homogenization process of 6005A aluminium alloys |
| CN110714174A (en) * | 2019-09-23 | 2020-01-21 | 四川阳光坚端铝业有限公司 | Homogenization treatment process of aluminum alloy ingot |
| CN110724859A (en) * | 2019-11-04 | 2020-01-24 | 苏州大学 | Homogenized 6-series aluminum alloy and preparation method thereof |
| CN111748756A (en) * | 2020-06-17 | 2020-10-09 | 宁波锦越新材料有限公司 | Homogenization treatment method of aluminum alloy |
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