CN108277445A - A kind of heat treatment method of 7075 aluminium alloy self-plugging rivet rivet nut - Google Patents
A kind of heat treatment method of 7075 aluminium alloy self-plugging rivet rivet nut Download PDFInfo
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- CN108277445A CN108277445A CN201810400125.1A CN201810400125A CN108277445A CN 108277445 A CN108277445 A CN 108277445A CN 201810400125 A CN201810400125 A CN 201810400125A CN 108277445 A CN108277445 A CN 108277445A
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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
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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
- C21D9/0093—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for screws; for bolts
-
- 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
Abstract
The present invention relates to the technical field of heat treatment of aluminium alloy, specially a kind of heat treatment method of 7075 aluminium alloy self-plugging rivet rivet nut, steps are as follows：1) it is dissolved for the first time：The self-plugging rivet rivet nut produced with 7075 aluminium alloys is heated in heating furnace, is kept the temperature after being heated to certain temperature, cooling in cold water is put into, obtains the rivet nut product after being dissolved for the first time；2) it is dissolved for second：The product of rivet nut after being dissolved for the first time in step 1 is placed in heating furnace and is heated, is then kept the temperature, cooling in cold water is put into, obtains the rivet nut product after second of solid solution；3) ageing treatment：Rivet nut product after second in step 2 is dissolved heats in heating furnace, is then kept the temperature, air-cooled, carries out first time ageing treatment；4) oscillating aging：Product will be obtained in step 3 carries out oscillating aging.The rivet nut in market of the present invention has good Grain size distribution and crystal grain thinning, so as to improve the performance of the self-plugging rivet rivet nut of 7075 aluminium alloys production.
Description
Technical field
The present invention relates to a kind of heat treatment methods of the self-plugging rivet rivet nut with alloy production, belong to the heat treatment of aluminium alloy
Technical field, specially a kind of heat treatment method of 7075 aluminium alloy self-plugging rivet rivet nut.
Background technology
Self-plugging rivet rivet nut has 2017,5056 using commonplace aluminum alloy materials in aerospace at present.It is close several
Year, automotive light weight technology is quickly grown.It is also one of trend to replace carbon steel using the aluminium alloy of high intensity.
5056 be Al-Mg systems rust-proof type aluminium alloy, not heat-treatable strengthened, has good plasticity in annealed condition, resistance to
Corrosion is good, but intensity is relatively low, and discomfort is fit to do high strength rivet.2017 be the typical duralumin, hard alumin ium alloy in Al-Cu-Mg,
Its composition is more reasonable, and comprehensive performance is preferable, and forming property is all relatively good under Warm status, annealing and new as-quenched, heat treatment
Strengthen significant effect, but heat treatment method requires strictly.Corrosion stability is poor.
7075 aluminium alloys are a kind of cold treatment aluminium alloys, and intensity is high, outclass mild steel.7075 be commercial most strength alloy it
One.Common corrosion resistance, good mechanical properties and anode reaction.Small grains make deep drilling performance more preferable, and tool is resistance to
The enhancing of mill property；The alloys such as a small amount of copper, chromium are generally all added in 7075 materials, this be in 7075-T651 aluminium alloys particularly top grade,
It is known as product most excellent in aluminium alloy, intensity is high, is far competent at what mild steel.Representing purposes has aerospace, mold processing, machine
Tool equipment, frock clamp, which is phase late 1940s to be just applied to aircraft industry, so far still in aircraft industry
On the superhigh intensity wrought aluminium alloy be used widely.Its main feature is that plasticity is good after solution treatment, heat treatment reinforcement effect is special
It is not good, there is high intensity at 150 DEG C or less.But the material does self-plugging rivet rivet nut and will appear the bad of part cracking in staking
Phenomenon can prevent the bad phenomenon with the condition for adjusting heat treatment.Therefore the self-plugging rivet that 7075 aluminium alloys of research produce is followed closely
The heat treatment method of body has very important significance to high intensity self-plugging rivet rivet nut improved combination properties.
Invention content
The invention will solve a kind of heat treatment method of the self-plugging rivet rivet nut produced with 7075 aluminium alloys, the technique
The good Grain size distribution of acquisition and crystal grain thinning for making the self-plugging rivet rivet nut of 7075 aluminium alloys production, so as to improve 7075 aluminium
The performance of the self-plugging rivet rivet nut of alloy production.
In order to solve the above technical problems, the invention the technical solution adopted is that：
A kind of heat treatment method of 7075 aluminium alloy self-plugging rivet rivet nut, which is characterized in that
Include the following steps：
1), first time solution treatment：The self-plugging rivet rivet nut produced with 7075 aluminium alloys is heated in heating furnace, is heated
It is kept the temperature after to certain temperature, is put into cooling in cold water, obtain the rivet nut product after being dissolved for the first time；
2), second of solution treatment：The product of rivet nut after being dissolved for the first time in step 1 is placed on and is preheating to product in advance
It heats in the heating furnace of required temperature, is then kept the temperature, be put into cooling in cold water, obtain the production of the rivet nut after second of solid solution
Product；
3), ageing treatment：Rivet nut product after second in step 2 is dissolved heats in heating furnace, is then protected
Temperature, to after the time, product taking-up heating furnace is air-cooled, carries out first time ageing treatment；
4), oscillating aging：It is put into product is obtained in step 3 on shaking platform, carries out oscillating aging.
Further improvement of these options, in step 1, the certain temperature of heating is 425~430 DEG C, soaking time
It is 35~50 minutes.
Further improvement of these options, in the step 2, heating temperature is that heating temperature is 465~470 DEG C,
Soaking time was controlled at 20~30 minutes.
Further improvement of these options, heating temperature is 100~105 DEG C in step 3, and soaking time is 5~7 small
When.
Further improvement of these options, in step 4, the exciting force of shaking platform is 15KN, speed 1500r/
Min, Acceleration Control is in 90~130m/s2。
The beneficial effects of the present invention are：By the self-plugging rivet rivet nut produced with 7075 aluminium alloys according to disclosed by the invention
Technical solution is handled, and can not be cracked with crystal grain thinning, raising intensity, particularly rivet nut staking, be improved and closed with 7075 aluminium
The comprehensive performance of the self-plugging rivet rivet nut of gold production.
Specific implementation mode
The present invention is further explained in the light of specific embodiments.
It is closed with 7075 aluminium using same chemical composition and a kind of of specification in embodiment and contrast test in the present invention
The self-plugging rivet rivet nut of gold production is tested and is illustrated, used 7075 aluminum alloy chemical composition and rivet nut specification such as table
Shown in 1.7075 aluminum alloy chemical composition used meets GB/T-3190-2008.
7075 aluminium alloys employed in 1 embodiment of table and rivet nut specification
Embodiment one：
A kind of heat treatment method of the self-plugging rivet rivet nut produced with 7075 aluminium alloys, including following processing step：
1. first time solution treatment：The self-plugging rivet rivet nut produced with 7075 aluminium alloys is heated to 425 in heating furnace
DEG C, 40 minutes are kept the temperature, cooling in cold water is put into, obtains the rivet nut product after being dissolved for the first time.
2. second of solution treatment：The product of rivet nut after being dissolved for the first time in step 1 is placed in heating furnace and is heated to
465 DEG C, 25 minutes are kept the temperature, (furnace temperature must be preheating to product required temperature in advance) is put into cooling in cold water, obtains second
Rivet nut product after solid solution.
3. ageing treatment：Rivet nut product after second in step 2 is dissolved is heated to 100 DEG C in heating furnace, heat preservation 6
Hour, to after the time, product taking-up heating furnace is air-cooled, carries out first time timeliness.
4. oscillating aging：It is put into product is obtained in step 3 on shaking platform, exciting force 15KN, speed 1500r/
Min, Acceleration Control are in 90~130m/ s2Carry out oscillating aging.Obtain the self-plugging rivet rivet nut produced with 7075 aluminium alloys.
Embodiment two：
A kind of heat treatment method of the self-plugging rivet rivet nut produced with 7075 aluminium alloys, including following processing step：
1. first time solution treatment：The self-plugging rivet rivet nut produced with 7075 aluminium alloys is heated to 430 in heating furnace
DEG C, 40 minutes are kept the temperature, cooling in cold water is put into, obtains the rivet nut product after being dissolved for the first time.
2. second of solution treatment：The product of rivet nut after being dissolved for the first time in step 1 is placed in heating furnace and is heated to
470 DEG C, 25 minutes are kept the temperature, (furnace temperature must be preheating to product required temperature in advance) is put into cooling in cold water, obtains second
Rivet nut product after solid solution.
3. ageing treatment：Rivet nut product after second in step 2 is dissolved is heated to 105 DEG C in heating furnace, heat preservation 6
Hour, to after the time, product taking-up heating furnace is air-cooled, carries out first time timeliness.
4. oscillating aging：It is put into product is obtained in step 3 on shaking platform, exciting force 15KN, speed 1500r/
Min, Acceleration Control are in 90~130m/s2Carry out oscillating aging.Obtain the self-plugging rivet rivet nut produced with 7075 aluminium alloys.
Embodiment three：
A kind of heat treatment method of the self-plugging rivet rivet nut produced with 7075 aluminium alloys, including following processing step：
1. first time solution treatment：The self-plugging rivet rivet nut produced with 7075 aluminium alloys is heated to 430 in heating furnace
DEG C, 40 minutes are kept the temperature, cooling in cold water is put into, obtains the rivet nut product after being dissolved for the first time；
2. second of solution treatment：The product of rivet nut after being dissolved for the first time in step 1 is placed in heating furnace and is heated to
465 DEG C, 25 minutes are kept the temperature, (furnace temperature must be preheating to product required temperature in advance) is put into cooling in cold water, obtains second
Rivet nut product after solid solution.
3. ageing treatment：Rivet nut product after second in step 2 is dissolved is heated to 100 DEG C in heating furnace, heat preservation 6
Hour, to after the time, product taking-up heating furnace is air-cooled, carries out first time timeliness.
4. oscillating aging：It is put into product is obtained in step 3 on shaking platform, exciting force 15KN, speed 1500r/
Min, Acceleration Control are in 90~130m/s2Carry out oscillating aging.Obtain the self-plugging rivet rivet nut produced with 7075 aluminium alloys.
Example IV：
A kind of heat treatment method of the self-plugging rivet rivet nut produced with 7075 aluminium alloys, including following processing step：
1. first time solution treatment：The self-plugging rivet rivet nut produced with 7075 aluminium alloys is heated to 425 in heating furnace
DEG C, 40 minutes are kept the temperature, cooling in cold water is put into, obtains the rivet nut product after being dissolved for the first time.
2. second of solution treatment：The product of rivet nut after being dissolved for the first time in step 1 is placed in heating furnace and is heated to
470 DEG C, 25 minutes are kept the temperature, (furnace temperature must be preheating to product required temperature in advance) is put into cooling in cold water, obtains second
Rivet nut product after solid solution.
3. ageing treatment：Rivet nut product after second in step 2 is dissolved is heated to 105 DEG C in heating furnace, heat preservation 6
Hour, to after the time, product taking-up heating furnace is air-cooled, carries out first time timeliness.
4. oscillating aging：It is put into product is obtained in step 3 on shaking platform, exciting force 15KN, speed 1500r/
Min, Acceleration Control carry out oscillating aging in 90~130m/s2.Obtain the self-plugging rivet rivet nut produced with 7075 aluminium alloys.
Embodiment five：
A kind of heat treatment method of the self-plugging rivet rivet nut produced with 7075 aluminium alloys, including following processing step：
1. first time solution treatment：The self-plugging rivet rivet nut produced with 7075 aluminium alloys is heated to 425 in heating furnace
DEG C, 40 minutes are kept the temperature, cooling in cold water is put into, obtains the rivet nut product after being dissolved for the first time.
2. second of solution treatment：The product of rivet nut after being dissolved for the first time in step 1 is placed in heating furnace and is heated to
470 DEG C, 25 minutes are kept the temperature, (furnace temperature must be preheating to product required temperature in advance) is put into cooling in cold water, obtains second
Rivet nut product after solid solution.
3. ageing treatment：Rivet nut product after second in step 2 is dissolved is heated to 100 DEG C in heating furnace, heat preservation 6
Hour, to after the time, product taking-up heating furnace is air-cooled, carries out first time timeliness.
4. oscillating aging：It is put into product is obtained in step 3 on shaking platform, exciting force 15KN, speed 1500r/
Min, Acceleration Control are in 90~130m/s2Carry out oscillating aging.Obtain the self-plugging rivet rivet nut produced with 7075 aluminium alloys.
Embodiment six：
A kind of heat treatment method of the self-plugging rivet rivet nut produced with 7075 aluminium alloys, including following processing step：
1. first time solution treatment：The self-plugging rivet rivet nut produced with 7075 aluminium alloys is heated to 425 in heating furnace
DEG C, 40 minutes are kept the temperature, cooling in cold water is put into, obtains the rivet nut product after being dissolved for the first time.
2. second of solution treatment：The product of rivet nut after being dissolved for the first time in step 1 is placed in heating furnace and is heated to
465 DEG C, 25 minutes are kept the temperature, (furnace temperature must be preheating to product required temperature in advance) is put into cooling in cold water, obtains second
Rivet nut product after solid solution.
3. ageing treatment：Rivet nut product after second in step 2 is dissolved is heated to 105 DEG C in heating furnace, heat preservation 6
Hour, to after the time, product taking-up heating furnace is air-cooled, carries out first time timeliness.
4. oscillating aging：It is put into product is obtained in step 3 on shaking platform, exciting force 15KN, speed 1500r/
Min, Acceleration Control are in 90~130m/s2Carry out oscillating aging.Obtain the self-plugging rivet rivet nut produced with 7075 aluminium alloys.
Embodiment seven：
A kind of heat treatment method of the self-plugging rivet rivet nut produced with 7075 aluminium alloys, including following processing step：
1. first time solution treatment：The self-plugging rivet rivet nut produced with 7075 aluminium alloys is heated to 430 in heating furnace
DEG C, 40 minutes are kept the temperature, cooling in cold water is put into, obtains the rivet nut product after being dissolved for the first time.
2. second of solution treatment：The product of rivet nut after being dissolved for the first time in step 1 is placed in heating furnace and is heated to
465 DEG C, 25 minutes are kept the temperature, (furnace temperature must be preheating to product required temperature in advance) is put into cooling in cold water, obtains second
Rivet nut product after solid solution.
3. ageing treatment：Rivet nut product after second in step 2 is dissolved is heated to 105 DEG C in heating furnace, heat preservation 6
Hour, to after the time, product taking-up heating furnace is air-cooled, carries out first time timeliness.
4. oscillating aging：It is put into product is obtained in step 3 on shaking platform, exciting force 15KN, speed 1500r/
Min, Acceleration Control are in 90~130m/s2Carry out oscillating aging.Obtain the self-plugging rivet rivet nut produced with 7075 aluminium alloys.
In order to verify the present invention implementation result, the verification of ten batches has been carried out to the above embodiment of the present invention 1~7,
Each batch extracts 5 rivet nuts and tests, and the results are shown in Table 2.(tensile strength in table is average value)
Performance parameter after the heat treatment of 2 Examples 1 to 7 rivet nut of table
Note：The main technical requirements of rivet nut are as follows, tensile strength >=300MPa；Grain size：>=4 grades；Rivet nut is after staking
Must not there are cracking or crackle.
From Table 2, it can be seen that the embodiment of the present invention 1~7, property indices require qualified.Using the present invention
Technical solution has advantage outstanding compared with prior art to the self-plugging rivet rivet nut produced with 7075 aluminium alloys.
The self-plugging rivet rivet nut appearance of 7075 aluminium alloy of the use production of prior art production such as reaches tensile strength, after staking
It will appear the cracking of part, do not crack after staking, tensile strength cannot reach.
Above example is to elaborate that the basic principle and characteristic of the present invention, the present invention are not limited by above-mentioned example,
Without departing from the spirit and scope, the present invention also has various changes, these changes and modifications are both fallen within
In scope of the claimed invention.The invention of this reality is claimed range and is defined by the appending claims and its equivalent thereof.
Claims (5)
1. a kind of heat treatment method of 7075 aluminium alloy self-plugging rivet rivet nut, which is characterized in that
Include the following steps：
1), first time solution treatment：The self-plugging rivet rivet nut produced with 7075 aluminium alloys is heated in heating furnace, is heated to one
It is kept the temperature after constant temperature degree, is put into cooling in cold water, obtain the rivet nut product after being dissolved for the first time；
2), second of solution treatment：The product of rivet nut after being dissolved for the first time in step 1 is placed on and is preheating to needed for product in advance
It heats in the heating furnace of temperature, is then kept the temperature, be put into cooling in cold water, obtain the rivet nut product after second of solid solution；
3), ageing treatment：Rivet nut product after second in step 2 is dissolved heats in heating furnace, is then kept the temperature, is arrived
After time, product taking-up heating furnace is air-cooled, carries out first time ageing treatment；
4), oscillating aging：It is put into product is obtained in step 3 on shaking platform, carries out oscillating aging.
2. a kind of heat treatment method of 7075 aluminium alloy self-plugging rivet rivet nut as described in claim 1, which is characterized in that in step
In rapid 1, the certain temperature of heating is 425~430 DEG C, and soaking time is 35~50 minutes.
3. a kind of heat treatment method of 7075 aluminium alloy self-plugging rivet rivet nut as described in claim 1, which is characterized in that in institute
It states in step 2, heating temperature is that heating temperature is 465~470 DEG C, and soaking time was controlled at 20~30 minutes.
4. a kind of heat treatment method of 7075 aluminium alloy self-plugging rivet rivet nut as described in claim 1, which is characterized in that in step
Heating temperature is 100~105 DEG C in rapid 3, and soaking time is 5~7 hours.
5. a kind of heat treatment method of 7075 aluminium alloy self-plugging rivet rivet nut as described in claim 1, which is characterized in that in step
In rapid 4, the exciting force of shaking platform is 15KN, and speed 1500r/min, Acceleration Control is in 90~130m/s2。
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810400125.1A CN108277445B (en) | 2018-04-28 | 2018-04-28 | Heat treatment method of 7075 aluminum alloy blind rivet body |
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| CN201810400125.1A CN108277445B (en) | 2018-04-28 | 2018-04-28 | Heat treatment method of 7075 aluminum alloy blind rivet body |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108998644A (en) * | 2018-09-25 | 2018-12-14 | 株洲市九洲传动机械设备有限公司 | A kind of aging treatment method of gear housing |
| CN108998652A (en) * | 2018-09-25 | 2018-12-14 | 株洲市九洲传动机械设备有限公司 | A kind of heat treatment method of cast aluminium alloy gold gear-box |
| CN115305421A (en) * | 2022-07-25 | 2022-11-08 | 中南大学 | Thermal vibration aging method and device for regulating and controlling residual stress and performance of high-strength aluminum alloy |
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| CN1834281A (en) * | 2005-12-06 | 2006-09-20 | 北京有色金属研究总院 | Two-stage forced solution treatment method for high strength deformed aluminum alloy |
| CN104805342A (en) * | 2015-05-21 | 2015-07-29 | 湖南稀土金属材料研究院 | Aluminum alloy material, preparing method of aluminum alloy material and application of aluminum alloy material |
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| CN1834281A (en) * | 2005-12-06 | 2006-09-20 | 北京有色金属研究总院 | Two-stage forced solution treatment method for high strength deformed aluminum alloy |
| CN104805342A (en) * | 2015-05-21 | 2015-07-29 | 湖南稀土金属材料研究院 | Aluminum alloy material, preparing method of aluminum alloy material and application of aluminum alloy material |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108998644A (en) * | 2018-09-25 | 2018-12-14 | 株洲市九洲传动机械设备有限公司 | A kind of aging treatment method of gear housing |
| CN108998652A (en) * | 2018-09-25 | 2018-12-14 | 株洲市九洲传动机械设备有限公司 | A kind of heat treatment method of cast aluminium alloy gold gear-box |
| CN108998644B (en) * | 2018-09-25 | 2020-06-23 | 株洲市九洲传动机械设备有限公司 | Aging treatment method for gearbox body |
| CN115305421A (en) * | 2022-07-25 | 2022-11-08 | 中南大学 | Thermal vibration aging method and device for regulating and controlling residual stress and performance of high-strength aluminum alloy |
| CN115305421B (en) * | 2022-07-25 | 2023-10-27 | 中南大学 | Thermal vibration aging method and device for regulating and controlling residual stress and performance of high-strength aluminum alloy |
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| CN108277445B (en) | 2020-02-07 |
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