CN106350713B - A kind of preparation process of Al-Mg-Si alloy and its plank - Google Patents
A kind of preparation process of Al-Mg-Si alloy and its plank Download PDFInfo
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- CN106350713B CN106350713B CN201610727749.5A CN201610727749A CN106350713B CN 106350713 B CN106350713 B CN 106350713B CN 201610727749 A CN201610727749 A CN 201610727749A CN 106350713 B CN106350713 B CN 106350713B
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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
- C22C21/06—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
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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
- C22F1/047—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
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Abstract
It is composed of the following components according to weight percent the invention discloses a kind of Al Mg Si alloys：Mg, Mn, Si, Cr, Cu, Fe≤0.32%, Zn≤0.25%, Ti≤0.1%, other are Al and some inevitable impurity elements；Al Mg Si sheet alloy preparation processes：(1) Al Mg Si alloys as described above are produced；(2) slab ingot is made, successively evenly heating processing, preheating；(3) hot rolling is to get Al Mg Si sheet alloys.Al Mg Si alloys of the present invention and the technique for preparing Al Mg Si sheet alloys effectively improve sheet alloy intensity, sheet alloy intensity and plasticity, reduce cracking during bending；It interacts and influences between the method for the present invention step, can effectively control crystallite dimension, eliminate the rough orange peel line phenomenon of alloy plate face after stretching, improve plate surface quality.
Description
Technical field
The present invention relates to the preparation process of a kind of alloy and its plank, more particularly to a kind of Al-Mg-Si alloy and its plank
Preparation process.
Background technology
Al-Mg-Si systems T651 is the high-quality aluminum alloy product of thermally treated pre-stretching technique productions, magnesium, silicon alloy
Characteristic is more, with splendid, the excellent weld characteristics of processing performance；Plating resistance excellent, good corrosion resistance, toughness are high and process
It is indeformable afterwards；Material densification zero defect and the good characteristics such as it is easily polished.So that the alloy is widely used in machine components, structure
The fields such as engineering, modern architecture and communications and transportation, therefore be trend of the times for steel with aluminium in these fields, demand is big.Tradition
The technique that technique prepares Al-Mg-Si systems T651 has the disadvantages that：(1) the second phase is not easy to during alloy preparation technology to contain
The control of amount is not easy to the second mutually full and uniform precipitation, causes performance relatively low and crystallite dimension abnormal growth；(2) sheet alloy
Deform uneven, internal energy storage is uneven, so as to cause grain structure size abnormal growth after solution hardening is directly influenced；
(3) sheet alloy stretching rear surface orange peel shape lines is serious, influences sheet alloy appearance.Therefore, there is an urgent need for a kind of crystal grain is thin now
The Al-Mg-Si alloy and its plate changing, eliminate the orange peel line phenomenon of plate face no concave-convex injustice after stretching, improving sheet alloy quality
The preparation process of material.
Being disclosed in the information of the background technology part, it is only intended to increase understanding of the overall background of the invention, without answering
It has been the prior art well known to persons skilled in the art when being considered as recognizing or imply that the information is constituted in any form.
Invention content
The present invention in view of the above technical problems, invents a kind of Al-Mg-Si alloy and its preparation process of plank, it is intended to carry
For one kind in the case where ensuring that sheet alloy performance is qualified, stable, optimization preparation process, production technology, crystal grain thinning, raising
The preparation process of the Al-Mg-Si alloy plank for the orange peel lines phenomenon that sheet alloy quality, elimination occur after stretching.
To achieve the above object, technical solution provided by the invention is as follows：
A kind of Al-Mg-Si alloy, it is composed of the following components according to weight percent：Mg:0.95~1.25%, Mn:0.08
~0.15%, Si:0.52~0.78%, Cr:0.18~0.32%, Cu:0.2~0.35%, Fe≤0.32%, Zn≤
0.25%, Ti≤0.1%, other are Al and some inevitable impurity elements.
A kind of preparation process of Al-Mg-Si alloy plank as described above, including following operating procedure：
(1) Al-Mg-Si alloy is produced, Al-Mg-Si alloy is composed of the following components according to weight percent：Mg:0.95
~1.25%, Mn:0.08~0.15%, Si:0.52~0.78%, Cr:0.18~0.32%, Cu:0.2~0.35%, Fe≤
0.32%, Zn≤0.25%, Ti≤0.1%, other are Al and some inevitable impurity elements；
(2) slab ingot is made in the Al-Mg-Si alloy obtained in step (1), then carries out evenly heating processing, preheating successively；
(3) alloy after preheating in step (2) is subjected to hot rolling, rolls into finished product thickness blank, thickness is 4~80mm, eventually
Temperature is rolled for 180~280 DEG C to get Al-Mg-Si alloy plank.
Wherein, further include step (4) cooling, step (5) solution hardening, step (6) stretches and step (7) ageing treatment.
Wherein, it after the step (5) solution hardening is Al-Mg-Si alloy plank natural cooling, is quenched using multistage solid solution
Fire, i.e., after being first warming up to 300~380 DEG C, 40~120 DEG C/min of heating rate, solid solution 10~60min of heat preservation, then it is warming up to 535
DEG C, 40~100 DEG C/min of heating rate, solid solution 20~180min of heat preservation are quenched to room temperature.
Wherein, the step (6) stretches, and amount of tension is 0.8~3.0%.
Wherein, step (7) ageing treatment, treatment temperature are 165 DEG C~185 DEG C, keep the temperature 10~20h.
Wherein, slab ingot carries out homogenization heat treatment, heating rate 40 at being 460 DEG C~570 DEG C in temperature in step (2)
~80 DEG C/h, keep the temperature 8~30h.
Wherein, the preheating described in step (2) is 420 DEG C~510 DEG C 2~25h of preheating.
Wherein, the slab ingot that thickness is 400~700mm is made in step (2).
Wherein, hot rolling percentage pass reduction 20~40% third from the bottom in step (3), mill speed are 2~7m/s；Reciprocal the
Two percentage pass reductions 22~42%, mill speed are 1~6m/s；Last percentage pass reduction 22~45%, mill speed 0.8
~5m/s.
Compared with prior art, the present invention has the advantages that：
Al-Mg-Si alloy of the present invention and the technique for preparing Al-Mg-Si alloy plank, by optimize alloy of the present invention at
Point, adjustment inhibits the second phase constitution of grain structure abnormal growth, while rationally controlling Mg, Si content, is effectively carried to reach
The purpose of high alloy timber intensity；Further, the hot direct casting that the present invention uses is made, and high-temperature homogenization heat treatment can reduce ingredient
The second phase for inhibiting abnormal grain growth is fully precipitated in segregation；Furthermore the present invention hot rolling technology, control hot rolling finishing temperature and
Rolling pass reduction rate, it is effective to improve alloy internal structure tissue and energy storage situation；Using multistage solution hardening system, make crystalline substance
Grain is uniformly grown up, and crystal grain thinning is finally reached, and improves sheet alloy intensity and plasticity, reduces cracking during bending；Side through the invention
Method interacts and influences step by step, can effectively control crystallite dimension, eliminate the rough orange peel of alloy plate face after stretching
Line phenomenon improves plate surface quality.
Description of the drawings
Fig. 1 is preparation technology flow chart of the present invention.
Fig. 2 is the Al-Mg-Si alloy plate surface quality and crystal size in alloy that the embodiment of the present invention 1 prepares gained
Schematic diagram；Wherein, left figure is surface quality, and right figure is crystal size tissue in alloy.
Fig. 3 is that comparative example 1 prepares products obtained therefrom surface quality and crystal size schematic diagram in alloy；Wherein, left figure
For surface quality, right figure is crystal size tissue in alloy.
Fig. 4 is that comparative example 2 prepares products obtained therefrom surface quality and crystal size schematic diagram in alloy；Wherein, left figure
For surface quality, right figure is crystal size tissue in alloy.
Fig. 5 is that comparative example 3 prepares products obtained therefrom surface quality and crystal size schematic diagram in alloy；Wherein, left figure
For surface quality, right figure is crystal size tissue in alloy.
Specific implementation mode
Specific implementation mode is described in detail below in conjunction with the accompanying drawings, it is to be understood that protection scope of the present invention not by
The limitation of specific implementation mode.For the Al-Mg-Si alloy plank used in embodiment for Al-Mg-Si systems T651, min indicates the time
Minute, h indicate the time hour.
Embodiment 1
A kind of preparation process of Al-Mg-Si alloy plank, operating procedure are as follows：
(1) Al-Mg-Si alloy, Mg are produced according to weight percent:1.16%, Mn:0.14%, Si:0.72%, Cr:
0.31%, Cu:0.27%, Fe:0.27%, Zn:0.22%, Ti:0.06%, other are Al and some inevitable impurity members
Element；
(2) gained Al-Mg-Si alloy will be weighed in step (1) and carries out melting, is partly connected after then deaerated, filtering
Continuous casting is cast as the slab ingot that thickness is 520mm, then by slab ingot be 515 DEG C in temperature at carry out homogenization heat treatment, heat up
Rate is 60 DEG C/h, keeps the temperature 15h after reaching assigned temperature, is cooled to room temperature, and gained slab ingot is cut off end to end with after peeling, is obtained
Thickness is the slab ingot of 500mm, and it is 465 DEG C of preheating 4h to keep temperature；
(3) by gained slab ingot elder generation hot rolling after preheating in step (2), the blank that finished product thickness is 30mm, course of hot rolling are rolled into
Middle reduction ratio percentage pass reduction third from the bottom is 24~27%, and mill speed is 2~3.5m/s；Percentage pass reduction second from the bottom is
25~29%, mill speed is 1.5~3m/s；Last percentage pass reduction is 29~34%, and mill speed is 0.8~2.0m/
S, finishing temperature are 255 DEG C to get Al-Mg-Si alloy plank；
(4) gained Al-Mg-Si alloy plank after step (3) hot rolling is cooled down；
(5) Al-Mg-Si alloy plank obtained by step (4) is warming up to 340 DEG C, 70 DEG C/min of heating rate, solid solution heat preservation
30min, then 535 DEG C are warming up to, 60 DEG C/min of heating rate, solid solution heat preservation 100min, rapid quenching to room temperature；
(6) gained Al-Mg-Si alloy plate stretch 1.5% after solution hardening；
(7) gained Al-Mg-Si alloy plank ageing treatment after stretching, treatment temperature are 172 DEG C, and 12h is to get Al- for heat preservation
Mg-Si sheet alloy finished products, are analyzed, performance is as shown in table 1 after finished product sawing.
1 30mm heavy-gauge sheeting performance indicators of table
As seen from Table 1, according to technical solution of the present invention, Al-Mg-Si alloy ingredient is optimized, controls hot rolling finish to gauge
Temperature, hot rolling drafts etc. prepare the performance of product Al-Mg-Si alloy plank far beyond national standard；The plate surface is without orange peel
Line phenomenon, internal grain is tiny, about 70 μm of crystal grain, such as Fig. 2.
Embodiment 2
A kind of preparation process of Al-Mg-Si alloy plank, operating procedure are as follows：
(1) Al-Mg-Si alloy, Mg are produced according to weight percent:1.25%, Mn:0.10%, Si:0.78%, Cr:
0.25%, Cu:0.35%, Fe:0.2%, Zn:0.25%, Ti:0.1%, other are Al and some inevitable impurity members
Element；
(2) gained Al-Mg-Si alloy will be weighed in step (1) and carries out melting, is partly connected after then deaerated, filtering
Continuous casting is cast as the slab ingot that thickness is 400mm, then by slab ingot be 460 DEG C in temperature at carry out homogenization heat treatment, heat up
Rate is 40 DEG C/h, keeps the temperature 30h after reaching assigned temperature, is cooled to room temperature, and gained slab ingot is cut off end to end with after peeling, is obtained
Thickness is the slab ingot of 380~395mm, and it is 420 DEG C of preheating 25h to keep temperature；
(3) by gained slab ingot elder generation hot rolling after preheating in step (2), the blank that finished product thickness is 80mm, course of hot rolling are rolled into
Middle reduction ratio percentage pass reduction third from the bottom is 20~24%, and mill speed is 3.5~5.5m/s；Percentage pass reduction second from the bottom
It is 22~25%, mill speed is 1~2.5m/s；Last percentage pass reduction be 22~29%, mill speed be 2.0~
3.5m/s, finishing temperature are 180 DEG C to get Al-Mg-Si alloy plank；
(4) gained Al-Mg-Si alloy plank after step (3) hot rolling is cooled down；
(5) Al-Mg-Si alloy plank obtained by step (4) is warming up to 300 DEG C, 40 DEG C/min of heating rate, solid solution heat preservation
60min, then 535 DEG C are warming up to, 40 DEG C/min of heating rate, solid solution heat preservation 180min, rapid quenching to room temperature；
(6) gained Al-Mg-Si alloy plate stretch 0.8% after solution hardening；
(7) gained Al-Mg-Si alloy plank ageing treatment after stretching, treatment temperature are 165 DEG C, and 20h is to get Al- for heat preservation
Mg-Si sheet alloy finished products.
Embodiment 3
A kind of preparation process of Al-Mg-Si alloy plank, operating procedure are as follows：
(1) Al-Mg-Si alloy, Mg are produced according to weight percent:0.95%, Mn:0.08%, Si:0.52%, Cr:
0.18%, Cu:0.2%, Fe:0.27%, Zn：0.22%, Ti:0.06%, other are Al and some inevitable impurity members
Element；
(2) gained Al-Mg-Si alloy will be weighed in step (1) and carries out melting, is partly connected after then deaerated, filtering
Continuous casting is cast as the slab ingot that thickness is 700mm, then by slab ingot be 570 DEG C in temperature at carry out homogenization heat treatment, heat up
Rate is 80 DEG C/h, keeps the temperature 8h after reaching assigned temperature, is cooled to room temperature, and gained slab ingot is cut off end to end with after peeling, is obtained
Thickness is the slab ingot of 680~690mm, and it is 510 DEG C of preheating 2h to keep temperature；
(3) by gained slab ingot elder generation hot rolling after preheating in step (2), finished product thickness is rolled into for the blank of 4mm, in course of hot rolling
Reduction ratio percentage pass reduction third from the bottom is 27~40%, and mill speed is 3.5~7m/s；Percentage pass reduction second from the bottom is 29
~42%, mill speed is 3~6m/s；Last percentage pass reduction is 34~45%, and mill speed is 3.5~5m/s, finish to gauge
Temperature is 280 DEG C to get Al-Mg-Si alloy plank；
(4) gained Al-Mg-Si alloy plank after step (3) hot rolling is cooled down, cross section cut roll side；
(5) Al-Mg-Si alloy plank obtained by step (4) is warming up to 380 DEG C, 120 DEG C/min of heating rate, solid solution heat preservation
10min, then 535 DEG C are warming up to, 100 DEG C/min of heating rate, solid solution heat preservation 20min, rapid quenching to room temperature；
(6) gained Al-Mg-Si alloy plate stretch 3.0% after solution hardening；
(7) gained Al-Mg-Si alloy plank ageing treatment after stretching, treatment temperature are 185 DEG C, and 10h is to get Al- for heat preservation
Mg-Si sheet alloy finished products.
Comparative example 1
A kind of preparation process of Al-Mg-Si alloy plank, operating procedure are as follows：
(1) Al-Mg-Si alloy, Mg are produced according to weight percent:1.12%, Mn:0.14%, Si:0.75%, Cr:
0.3%, Cu:0.28%, Fe：0.3%, Zn：0.22%, Ti:0.06%, other are Al and some inevitable impurity members
Element；
(2) gained Al-Mg-Si alloy will be weighed in step (1) and carries out melting, is partly connected after then deaerated, filtering
Continuous casting is cast as the slab ingot that thickness is 520mm, then by slab ingot be 515 DEG C in temperature at carry out homogenization heat treatment, heat up
Rate is 60 DEG C/h, keeps the temperature 15h after reaching assigned temperature, is cooled to room temperature, and gained slab ingot is cut off end to end with after peeling, is obtained
Thickness is the slab ingot of 500mm, and it is 465 DEG C of preheating 4h to keep temperature；
(3) by gained slab ingot elder generation hot rolling after preheating in step (2), the blank that finished product thickness is 30mm, course of hot rolling are rolled into
Middle reduction ratio percentage pass reduction third from the bottom is 15~18%, and mill speed is 2.5~3.5m/s；Percentage pass reduction second from the bottom
It is 16~19.5%, mill speed is 2~3.5m/s；Last percentage pass reduction is 18~22%, and mill speed is 1~2m/
S, finishing temperature are 340 DEG C to get Al-Mg-Si alloy plank；
(4) gained Al-Mg-Si alloy plank after step (3) hot rolling is cooled down；
(5) Al-Mg-Si alloy plank obtained by step (4) keeps the temperature 20min in 530 DEG C of single-stage solution hardening；
(6) gained Al-Mg-Si alloy plate stretch 2.0% after solution hardening；
(7) gained Al-Mg-Si alloy plank ageing treatment after stretching, treatment temperature are 172 DEG C, and 12h is to get Al- for heat preservation
Mg-Si sheet alloy products, are analyzed, performance is as shown in table 2 after finished product sawing.
2 30mm heavy-gauge sheeting performance indicators of table
| State | Rp0.2/MPa | Rm/MPa | A/% |
| 6061/T651- national standards | 240 | 290 | 9 |
| Al-Mg-Si/T651-1 | 292 | 316 | 19 |
As seen from Table 2, comparative example 1 optimizes Al-Mg-Si alloy ingredient, carries out the soaking of the technology of the present invention
After change processing, performance is far beyond national standard；But not to process optimizations such as hot rolling, solid solutions, there is more serious tangerine in plate surface
Dermatoglyph, internal grain is coarse, about 450 μm of grain size, such as Fig. 3.
Comparative example 2
A kind of preparation process of Al-Mg-Si alloy plank, operating procedure are as follows：
(1) Al-Mg-Si alloy, Mg are produced according to weight percent:1.21%, Mn:0.14%, Si:0.77%, Cr:
0.24%, Cu:0.21%, Fe:0.27%, Zn:0.20%, Ti:0.05%, other are Al and some inevitable impurity members
Element；
(2) gained Al-Mg-Si alloy will be weighed in step (1) and carries out melting, is partly connected after then deaerated, filtering
Continuous casting is cast as the slab ingot that thickness is 520mm, then by slab ingot be 515 DEG C in temperature at carry out homogenization heat treatment, heat up
Rate is 60 DEG C/h, keeps the temperature 15h after reaching assigned temperature, is cooled to room temperature, and gained slab ingot is cut off end to end with after peeling, is obtained
Thickness is the slab ingot of 500mm, and it is 465 DEG C of preheating 4h to keep temperature；
(3) by gained slab ingot elder generation hot rolling after preheating in step (2), the blank that finished product thickness is 30mm, course of hot rolling are rolled into
Middle reduction ratio percentage pass reduction third from the bottom is 24~27%, and mill speed is 2.5~4m/s；Percentage pass reduction second from the bottom is
26~30%, mill speed is 2.5~3.5m/s；Last percentage pass reduction is 30~35%, mill speed 2.6m/s, end
Temperature is rolled for 325 DEG C to get Al-Mg-Si alloy plank；
(4) gained Al-Mg-Si alloy plank after step (3) hot rolling is cooled down；
(5) Al-Mg-Si alloy plank obtained by step (4) keeps the temperature 15min in 530 DEG C of single-stage solution hardening；
(6) gained Al-Mg-Si alloy plate stretch 2.0% after solution hardening；
(7) gained Al-Mg-Si alloy plank ageing treatment after stretching, treatment temperature are 170 DEG C, and 15h is to get Al- for heat preservation
Mg-Si sheet alloy products, are analyzed, performance is as shown in table 3 after finished product sawing.
3 30mm heavy-gauge sheeting performance indicators of table
| State | Rp0.2/MPa | Rm/MPa | A/% |
| 6061/T651- national standards | 240 | 290 | 9 |
| Al-Mg-Si/T651-1 | 302 | 331 | 17 |
As seen from Table 2, after comparative example 2 is to the carry out part optimization such as Al-Mg-Si alloy ingredient, soaking, hot rolling,
Performance is far beyond national standard；But to process optimizations such as finishing temperature, solid solutions, there is not slight orange peel line in its plate surface, internal brilliant
Larger, about 220 μm of the crystal grain, such as Fig. 4 of grain.
Comparative example 3
A kind of preparation process of routine Al-Mg-Si alloy plank, operating procedure are as follows：
Conventional Al-Mg-Si alloy produces following components, Mg according to weight percent:0.89%, Mn:0.06%, Si:
0.56%, Cr:0.21%, Cu:0.21%, Fe:0.39%, Zn:0.22%, Ti:0.05%, after deaerated, filtering, carry out half
Continuously casting casts out the slab ingot that thickness is 520mm.By slab ingot in 480 DEG C of soaking, 60 DEG C/h of heating rate keeps the temperature 15h.It will be flat
The slab ingot that thickness is 500mm after ingot crop end and peeling.By 450 DEG C of slab ingot preheating 5h, first hot rolling coiled base is pressed in course of hot rolling
Lower rate percentage pass reduction third from the bottom is 16~18%, and mill speed is 3~4.5m/s；Percentage pass reduction second from the bottom be 17~
20%, mill speed is 2.5~4m/s；Last percentage pass reduction is 19~22%, and mill speed is 1.5~3m/s, finish to gauge
346 DEG C of temperature, thickness 10mm, crosscutting uncoiling.Plank is dissolved 15min to get Al-Mg-Si alloy plate product at 530 DEG C.
Plank is analyzed after finished product sawing, performance is as shown in table 4.
4 10mm heavy-gauge sheeting performance indicators of table
| State | Rp0.2/MPa | Rm/MPa | A/% |
| 6061/T651- national standards | 240 | 290 | 9 |
| 6061/T651-1 | 261 | 306 | 14 |
As seen from Table 4, comparative example 3 does not optimize Al-Mg-Si alloy ingredient, soaking, hot rolling etc., property
It can be just met for national standard；There is serious orange peel line in its plate surface, and internal grain is coarse, about 600 μm of crystal grain, such as Fig. 5.
The description of the aforementioned specific exemplary embodiment to the present invention is in order to illustrate and illustration purpose.These descriptions
It is not wishing to limit the invention to disclosed precise forms, and it will be apparent that according to the above instruction, can much be changed
And variation.The purpose of selecting and describing the exemplary embodiment is that explaining the specific principle of the present invention and its actually answering
With so that those skilled in the art can realize and utilize the present invention a variety of different exemplary implementation schemes and
Various chooses and changes.The scope of the present invention is intended to be limited by claims and its equivalents.
Claims (7)
1. a kind of Al-Mg-Si alloy, which is characterized in that composed of the following components according to weight percent：Mg:0.95~
1.25%, Mn:0.08~0.15%, Si:0.52~0.78%, Cr:0.18~0.32%, Cu:0.2~0.35%, Fe≤
0.32%, Zn≤0.25%, Ti≤0.1%, other are Al and some inevitable impurity elements；
The preparation process of the Al-Mg-Si alloy, including following operating procedure：
(1) Al-Mg-Si alloy is produced, Al-Mg-Si alloy is composed of the following components according to weight percent：Mg:0.95~
1.25%, Mn:0.08~0.15%, Si:0.52~0.78%, Cr:0.18~0.32%, Cu:0.2~0.35%, Fe≤
0.32%, Zn≤0.25%, Ti≤0.1%, other are Al and some inevitable impurity elements；
(2) slab ingot is made in the Al-Mg-Si alloy obtained in step (1), then carries out homogenization heat treatment, preheating successively；Its
In, slab ingot carries out homogenization heat treatment at being 460 DEG C~570 DEG C in temperature, keeps the temperature 8~30h；
(3) alloy after preheating in step (2) is subjected to hot rolling, hot rolling percentage pass reduction 20~40% third from the bottom, rolling speed
Degree is 2~7m/s；Percentage pass reduction 22~42% second from the bottom, mill speed are 1~6m/s；Last percentage pass reduction 22~
45%, mill speed is 0.8~5m/s, and finishing temperature is 180~280 DEG C；
(4) cooling；
(5) solution hardening：After cooling, after being first warming up to 300~380 DEG C, solid solution 10~60min of heat preservation, then 535 DEG C are warming up to,
Solid solution 20~180min of heat preservation, is quenched to room temperature；
(6) it stretches；
(7) ageing treatment.
2. Al-Mg-Si alloy according to claim 1, it is characterised in that：After described step (5) solution hardening is cooling,
300~380 DEG C, 40~120 DEG C/min of heating rate, solid solution 10~60min of heat preservation are first warming up to, then is warming up to 535 DEG C, is heated up
40~100 DEG C/min of speed, solid solution 20~180min of heat preservation, is quenched to room temperature.
3. Al-Mg-Si alloy according to claim 1, it is characterised in that：The step (6) stretches, and amount of tension is 0.8~
3.0%.
4. Al-Mg-Si alloy according to claim 1, it is characterised in that：Step (7) ageing treatment, treatment temperature 165
DEG C~185 DEG C, keep the temperature 10~20h.
5. Al-Mg-Si alloy according to claim 1, it is characterised in that：In step (2) slab ingot temperature be 460 DEG C~
Homogenization heat treatment is carried out at 570 DEG C, heating rate is 40~80 DEG C/h, keeps the temperature 8~30h.
6. Al-Mg-Si alloy according to claim 1, it is characterised in that：Preheating described in step (2) is 420 DEG C~
510 DEG C of 2~25h of preheating.
7. Al-Mg-Si alloy according to claim 1, it is characterised in that：It is 400~700mm that thickness is made in step (2)
Slab ingot.
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| CN108165906A (en) * | 2018-01-23 | 2018-06-15 | 西南铝业（集团）有限责任公司 | A kind of production technology of 6061T651 lattens |
| CN108300879B (en) * | 2018-01-30 | 2020-05-22 | 广西南南铝加工有限公司 | Preparation process of Al-Mg-Si alloy sheet for electric automobile bus conductor |
| CN109082566B (en) * | 2018-08-07 | 2020-05-05 | 中铝瑞闽股份有限公司 | 6-series alloy aluminum plate strip for mobile phone frame and preparation method thereof |
| CN109022848A (en) * | 2018-08-23 | 2018-12-18 | 山东创新金属科技有限公司 | A kind of high-strength corrosion-resisting Aluminum alloy production method |
| CN109722572B (en) * | 2018-12-30 | 2020-06-23 | 精美铝业有限公司 | High-performance aluminum alloy for power transmission and transformation equipment and preparation method thereof |
| CN110724864B (en) * | 2019-11-27 | 2021-03-16 | 郑州明泰实业有限公司 | 6M61 aluminum alloy base material for 5G filter cover plate and preparation process thereof |
| CN111074121B (en) * | 2019-12-31 | 2021-08-31 | 广东中色研达新材料科技股份有限公司 | Aluminum alloy and preparation method thereof |
| CN114686712B (en) * | 2022-03-29 | 2023-04-07 | 宁波江丰电子材料股份有限公司 | Aluminum alloy 6061, production method thereof and gas distribution plate |
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| CN102051562A (en) * | 2009-11-03 | 2011-05-11 | 北京有色金属研究总院 | Process for homogenizing aluminum alloy |
| CN103966487B (en) * | 2013-01-24 | 2016-12-28 | 秦皇岛开发区美铝合金有限公司 | The dedicated aluminium alloy casting rod production technology that forging aluminium alloy wheel hub of vehicle is used |
| CN103103419A (en) * | 2013-01-28 | 2013-05-15 | 广东台澳特种铝材有限公司 | Aluminum alloy for building aluminum template |
| CN103757507B (en) * | 2014-02-25 | 2016-04-27 | 北京科技大学 | A kind of automobile body outer board high bake hardening aluminum alloy materials and preparation method thereof |
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