CN107502842A - A kind of 6 systems and the supper-fast solid solution treatment method of 7 line aluminium alloys - Google Patents
A kind of 6 systems and the supper-fast solid solution treatment method of 7 line aluminium alloys Download PDFInfo
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- CN107502842A CN107502842A CN201710990286.6A CN201710990286A CN107502842A CN 107502842 A CN107502842 A CN 107502842A CN 201710990286 A CN201710990286 A CN 201710990286A CN 107502842 A CN107502842 A CN 107502842A
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- calandria
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- solution treatment
- solid solution
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Classifications
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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
- C22F1/002—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
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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
- 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
- C22F1/053—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 zinc as the next major constituent
Abstract
The present invention relates to a kind of 6 systems and the supper-fast solid solution treatment method of 7 line aluminium alloys, belong to technical field of metal material heat treatment.Direct Contact Heating solution treatment, alloy plate material is put between pre-heated upper calandria and lower calandria, upper calandria, lower calandria preheating temperature are 470 530 DEG C, upper calandria moves down under forcing press driving and compresses alloy plate material together with lower calandria, pressure is 15 50MPa, dwell time is 20 60s, to be fully dissolved；Plate shifts, shaping and Quenching Treatment, Ageing Treatment.The supper-fast solid solution treatment process method heating solution time of 6 systems and 7 line aluminium alloys involved in the present invention is short, produces aluminum alloy part precision height, and intensity is all higher than material T6 state intensity.
Description
Technical field
The invention belongs to technical field of metal material heat treatment, and in particular to a kind of supper-fast solution heat treatment of aluminium alloy
Method.
Background technology
The lightweight of automobile occupies very important status in energy-saving and emission-reduction.Experiment shows, mutually sympathizes with other conditions
Under condition, the weight of automobile often mitigates 100kg, and the fuel consumption of per 100 km will reduce by 0.4~lL, and the weight of automobile is often reduced
10%, the consumption of fuel oil can reduce by 6%~8%.Aluminum alloy materials have that density is small, specific strength is high, corrosion resistance is good low with cost
Etc. series of advantages, at present just more and more productions for body of a motor car part.6 line aluminium alloys are heat-treatable strengthened, intensity
Moderate, good corrosion resistance, easy application coloring, combination property is good, is used for manufacturing the shell of automobile and the framework of vehicle body,
Such as Audi A8 using 6016 as production car body panel material；7 be that ultra-high-strength aluminum alloy has excellent comprehensive mechanical property, is
It is widely used in a kind of light material in the fields such as automobile, Aero-Space.Wherein 7075 aluminium alloys have higher intensity and suction
Energy property, on the basis of body structure is rationally designed, can obtain the car body of aluminum alloy of superhigh intensity, with traditional steel body
Compare, on the basis of original performance is met, the light weight effect of automobile can be significantly improved, therefore automobile is every comprehensive
It is able to can increase substantially.But the forming property of aluminum alloy materials at room temperature is poor, resilience is big, therefore in body of a motor car part
No longer it is applicable using upper, traditional cold punching technology, it is necessary to which using new technologies such as hot formings, but heat forming technology can seriously drop
The material property of low aluminium alloy.A kind of method for solving the problem is to be combined forming process and heat treatment process, by same
One set of die realizes the purpose of " shaping " and " control ".Based on this, aluminum alloy heat punching press new technology is one kind just under study for action
The vanguard technology of high-strength aluminum alloy material is directed to, its forming process is that the aluminum alloy plate materials after complete solid solution are quick
It is transferred on water cooling mold, then quick matched moulds shaping, matched moulds is kept after the completion of shaping to complete to quench in part mould, it is most laggard
Row Ageing Treatment is to improve its intensity.Shaping can improve sheet material forming performance under high temperature, in mould quenching can ensure its intensity and
Dimensional accuracy.
In aluminum alloy heat stamping technology, the solution treatment of material has a major impact to part final performance, correlative study table
It is bright, select rational solid solubility temperature and soaking time to improve the solid solubility of thick indissoluble phase, make alloying element more molten
Enter matrix, by ageing strengthening, be more beneficial for improving the performance of aluminium alloy.Research of the people to aluminum alloy heat handling process at present
In terms of being concentrated mainly on timeliness with development, the research to solid solution process is also seldom, at present generally use recyclegas heating furnace pair
Plate is heated, but it is relative with for steel plate, the blackness of aluminium sheet is small, and heat transfer coefficient is small, so heating process programming rate is slow,
For the aluminium sheet after 1-3mm, its heat time needs 20-60 minutes, and is heated to be incubated when also needing to long after target temperature
Solution treatment is completed.Long solution treatment time and high energy expenditure are all unfavorable for the industrial applications of this technology, have
Necessity proposes new solid solution treatment method to shorten the solution treatment time and reduce energy consumption.
The content of the invention
The present invention provides a kind of 6 systems and the supper-fast solid solution treatment method of 7 line aluminium alloys, is aluminium to existing 6 system and 7 to solve
Alloy solid solution processing time is long, and energy consumption is big, the problem of being unfavorable for industrialized production.
The present invention adopts the technical scheme that, comprises the following steps：
Step 1：Direct Contact Heating solution treatment：
Alloy plate material is put between pre-heated upper calandria and lower calandria, upper calandria, lower calandria are pre-
Hot temperature is 470-530 DEG C, and upper calandria moves down under forcing press driving and compresses alloy plate material together with lower calandria,
Pressure is 15-50MPa, dwell time 20-60s, to be fully dissolved；
Step 2：Plate shifts
The plate after heating solution treatment is quickly transferred to shaping quenching mould, transfer time is less than 5s；
Step 3：Shaping and Quenching Treatment
Mould with cooling device plate after solid solution is formed while Quenching Treatment, wherein curring time 0.5-
3s, dwell time 4-10s, part remove mold temperature and are less than 50 DEG C；
Step 4：Ageing Treatment
Part is put into aging furnace, is heated to 120-180 DEG C, is incubated 8-24h, air cooling of then coming out of the stove.
The alloy plate material is 6 systems or 7 line aluminium alloy plates.
Beneficial effects of the present invention：
(1) alloy plate material directly being contacted using calandria and carries out solution treatment so that heating solid solution process is very fast,
It is shorten to by the 20min solution times of heating furnace within 1min；
(2) high firing rate promotes solute element quickly to incorporate aluminum substrate, and contributes to indissoluble phased soln, obtains
Saturated solid solution, the grain structure of fine uniform can be obtained after quick cooling, substantial amounts of fine uniform can be separated out after timeliness
Precipitated phase, the final workpiece strength that obtains are all higher than T6 state intensity.
Brief description of the drawings
Fig. 1 is the solid solution temperature curve map of experimental example 1 of the present invention；
Fig. 2 is the solid solution temperature curve map of experimental example 2 of the present invention；
Fig. 3 is the solid solution temperature curve map of experimental example 3 of the present invention.
Embodiment
Embodiment 1
Comprise the following steps：
Step 1：Direct Contact Heating solution treatment：
Alloy plate material is put between pre-heated upper calandria and lower calandria, upper calandria, lower calandria are pre-
Hot temperature is 470 DEG C, and upper calandria moves down under forcing press driving and compresses alloy plate material, pressure together with lower calandria
For 15MPa, dwell time 20s, to be fully dissolved；
Step 2：Plate shifts
The plate after heating solution treatment is quickly transferred to shaping quenching mould, transfer time is less than 5s；
Step 3：Shaping and Quenching Treatment
Mould with cooling device plate after solid solution is formed while Quenching Treatment, wherein curring time
0.5s, dwell time 4s, part remove mold temperature and are less than 50 DEG C；
Step 4：Ageing Treatment
Part is put into aging furnace, is heated to 120 DEG C, is incubated 8h, air cooling of then coming out of the stove.
Embodiment 2
Comprise the following steps：
Step 1：Direct Contact Heating solution treatment：
Alloy plate material is put between pre-heated upper calandria and lower calandria, upper calandria, lower calandria are pre-
Hot temperature is 500 DEG C, and upper calandria moves down under forcing press driving and compresses alloy plate material, pressure together with lower calandria
For 33MPa, dwell time 40s, to be fully dissolved；
Step 2：Plate shifts
The plate after heating solution treatment is quickly transferred to shaping quenching mould, transfer time is less than 5s；
Step 3：Shaping and Quenching Treatment
Mould with cooling device plate after solid solution is formed while Quenching Treatment, wherein curring time
1.8s, dwell time 7s, part remove mold temperature and are less than 50 DEG C；
Step 4：Ageing Treatment
Part is put into aging furnace, is heated to 150 DEG C, is incubated 16h, air cooling of then coming out of the stove.
Embodiment 3
Comprise the following steps：
Step 1：Direct Contact Heating solution treatment：
Alloy plate material is put between pre-heated upper calandria and lower calandria, upper calandria, lower calandria are pre-
Hot temperature is 530 DEG C, and upper calandria moves down under forcing press driving and compresses alloy plate material, pressure together with lower calandria
For 50MPa, dwell time 60s, to be fully dissolved；
Step 2：Plate shifts
The plate after heating solution treatment is quickly transferred to shaping quenching mould, transfer time is less than 5s；
Step 3：Shaping and Quenching Treatment
Mould with cooling device plate after solid solution is formed while Quenching Treatment, wherein curring time 3s,
Dwell time 10s, part remove mold temperature and are less than 50 DEG C；
Step 4：Ageing Treatment
Part is put into aging furnace, is heated to 180 DEG C, is incubated 24h, air cooling of then coming out of the stove.
Alloy plate material described in various embodiments above is 6 systems or 7 line aluminium alloy plates.
Below by specific experiment example come furtherly of the invention.
Experimental example 1
The supper-fast solid solution treatment method of 7075 aluminium alloys, specifically comprises the following steps：
Step 1：Direct Contact Heating solution treatment：
By the alloy plate materials of 150 × 90 × 2mm (length × width x thickness) 7075 be put into pre-heated upper calandria and it is lower plus
Between hot body, upper and lower calandria preheating temperature is 480 DEG C, and upper calandria moves down compresses aluminium alloy together with lower calandria
Plate, pressure 20MPa, dwell time are 30 seconds to be fully dissolved；
Step 2：Plate shifts
The plate after heating solution treatment is quickly transferred to shaping quenching mould, transfer time is less than 5 seconds；
Step 3：Shaping and Quenching Treatment
Mould with cooling device plate after solid solution is formed while Quenching Treatment, wherein curring time 2 seconds,
10 seconds dwell times, part remove mold temperature and are less than 50 DEG C；
Step 4：Ageing Treatment
Part is carried out to 120 DEG C of+24h Ageing Treatment, air cooling of then coming out of the stove.
Experimental example 2
The process of the supper-fast solution treatment of 7075 aluminium alloys, specifically comprises the following steps：
Step 1：Direct Contact Heating solution treatment：
The alloy plate materials of 90 × 75 × 3mm (length × width x thickness) 7075 are put into pre-heated upper calandria and lower heating
Between body, upper and lower calandria preheating temperature is 480 DEG C, and upper calandria moves down compresses aluminium alloy plate together with lower calandria
Material, pressure 50MPa, dwell time are 40 seconds to be fully dissolved；
Step 2：Plate shifts
The plate after heating solution treatment is quickly transferred to shaping quenching mould, transfer time is less than 5 seconds；
Step 3：Shaping and Quenching Treatment
Mould with cooling device plate after solid solution is formed while Quenching Treatment, wherein curring time 2 seconds,
10 seconds dwell times, part remove mold temperature and are less than 50 DEG C；
Step 4：Ageing Treatment
Part is carried out to 120 DEG C of+24h Ageing Treatment, air cooling of then coming out of the stove.
Experimental example 3
The process of the supper-fast solution treatment of 6082 aluminium alloys, specifically comprises the following steps：
Step 1：Direct Contact Heating solution treatment：
By the alloy plate materials of 135 × 80 × 2mm (length × width x thickness) 6082 be put into pre-heated upper calandria and it is lower plus
Between hot body, upper and lower calandria preheating temperature is 525 DEG C, and upper calandria moves down compresses aluminium alloy plate together with lower calandria
Material, pressure 25MPa, dwell time are 50 seconds to be fully dissolved；
Step 2：Plate shifts
The plate after heating solution treatment is quickly transferred to shaping quenching mould, transfer time is less than 5 seconds；
Step 3：Shaping and Quenching Treatment
Mould with cooling device plate after solid solution is formed while Quenching Treatment, wherein curring time 2 seconds,
10 seconds dwell times, part remove mold temperature and are less than 50 DEG C；
Step 4：Ageing Treatment
Part is carried out to 175 DEG C of+10h Ageing Treatment, air cooling of then coming out of the stove.
Wherein, upper and lower calandria is respectively embedded into electric heating tube and is used to heat, and heating tube is controlled by PID control system
Temperature.
The heat time of 1 each experimental example of table and hardness balance's result
Claims (2)
1. a kind of 6 systems and the supper-fast solid solution treatment method of 7 line aluminium alloys, it is characterised in that comprise the following steps：
Step 1：Direct Contact Heating solution treatment：
Alloy plate material is put between pre-heated upper calandria and lower calandria, upper calandria, lower calandria preheating temperature
Spend for 470-530 DEG C, upper calandria moves down under forcing press driving and compresses alloy plate material, pressure together with lower calandria
For 15-50MPa, dwell time 20-60s, to be fully dissolved；
Step 2：Plate shifts
The plate after heating solution treatment is quickly transferred to shaping quenching mould, transfer time is less than 5s；
Step 3：Shaping and Quenching Treatment
Mould with cooling device plate after solid solution is formed while Quenching Treatment, wherein curring time 0.5-3s,
Dwell time 4-10s, part remove mold temperature and are less than 50 DEG C；
Step 4：Ageing Treatment
Part is put into aging furnace, is heated to 120-180 DEG C, is incubated 8-24h, air cooling of then coming out of the stove.
2. a kind of 6 system according to claim 1 and the supper-fast solid solution treatment method of 7 line aluminium alloys, it is characterised in that described
Alloy plate material is 6 systems or 7 line aluminium alloy plates.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710990286.6A CN107502842A (en) | 2017-10-20 | 2017-10-20 | A kind of 6 systems and the supper-fast solid solution treatment method of 7 line aluminium alloys |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710990286.6A CN107502842A (en) | 2017-10-20 | 2017-10-20 | A kind of 6 systems and the supper-fast solid solution treatment method of 7 line aluminium alloys |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019154094A1 (en) * | 2018-02-07 | 2019-08-15 | 蔚来汽车有限公司 | Method for forming an aluminum alloy sheet part |
| CN112048684A (en) * | 2020-07-28 | 2020-12-08 | 佛山市三水凤铝铝业有限公司 | Heat treatment method for improving dimensional accuracy stability of aluminum alloy cold forming |
| CN112746228A (en) * | 2019-10-31 | 2021-05-04 | 中铝瑞闽股份有限公司 | Hot stamping forming method for 6-series aluminum alloy for automobile |
| CN113355614A (en) * | 2021-06-02 | 2021-09-07 | 吉林大学 | 7075 aluminum alloy precooling forming method |
| CN114318182A (en) * | 2021-12-24 | 2022-04-12 | 大连理工大学 | Hot forming method and device for large-size high-strength aluminum alloy aviation thin-wall part |
| CN115365361A (en) * | 2022-09-16 | 2022-11-22 | 吉林大学 | 7075-T6 aluminum alloy contact heating forming method |
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| CN102974675A (en) * | 2012-11-01 | 2013-03-20 | 哈尔滨工业大学 | Heat forming method for aluminum alloy sheet metal part after solid solution and water quenching |
| CN103695817A (en) * | 2013-12-12 | 2014-04-02 | 南京航空航天大学 | Heat-treatable aluminum alloy synchronous-quenching thermal-forming process |
| CN104388853A (en) * | 2014-12-02 | 2015-03-04 | 青海大学 | Method for performing recrystallization annealing on CC5083 aluminum alloy cold-rolled sheet to obtain isometric crystals in box type furnace |
| CN105586551A (en) * | 2014-10-21 | 2016-05-18 | 宁波江丰电子材料股份有限公司 | Thermal-treatment method for back boards |
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2017
- 2017-10-20 CN CN201710990286.6A patent/CN107502842A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102974675A (en) * | 2012-11-01 | 2013-03-20 | 哈尔滨工业大学 | Heat forming method for aluminum alloy sheet metal part after solid solution and water quenching |
| CN103695817A (en) * | 2013-12-12 | 2014-04-02 | 南京航空航天大学 | Heat-treatable aluminum alloy synchronous-quenching thermal-forming process |
| CN105586551A (en) * | 2014-10-21 | 2016-05-18 | 宁波江丰电子材料股份有限公司 | Thermal-treatment method for back boards |
| CN104388853A (en) * | 2014-12-02 | 2015-03-04 | 青海大学 | Method for performing recrystallization annealing on CC5083 aluminum alloy cold-rolled sheet to obtain isometric crystals in box type furnace |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019154094A1 (en) * | 2018-02-07 | 2019-08-15 | 蔚来汽车有限公司 | Method for forming an aluminum alloy sheet part |
| CN112746228A (en) * | 2019-10-31 | 2021-05-04 | 中铝瑞闽股份有限公司 | Hot stamping forming method for 6-series aluminum alloy for automobile |
| CN112048684A (en) * | 2020-07-28 | 2020-12-08 | 佛山市三水凤铝铝业有限公司 | Heat treatment method for improving dimensional accuracy stability of aluminum alloy cold forming |
| CN113355614A (en) * | 2021-06-02 | 2021-09-07 | 吉林大学 | 7075 aluminum alloy precooling forming method |
| CN114318182A (en) * | 2021-12-24 | 2022-04-12 | 大连理工大学 | Hot forming method and device for large-size high-strength aluminum alloy aviation thin-wall part |
| CN115365361A (en) * | 2022-09-16 | 2022-11-22 | 吉林大学 | 7075-T6 aluminum alloy contact heating forming method |
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Application publication date: 20171222 |