CN105970129B - One kind eliminates the anisotropic low stress manufacturing process of 2A12 aluminum alloy forge pieces - Google Patents
One kind eliminates the anisotropic low stress manufacturing process of 2A12 aluminum alloy forge pieces Download PDFInfo
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- CN105970129B CN105970129B CN201610522430.9A CN201610522430A CN105970129B CN 105970129 B CN105970129 B CN 105970129B CN 201610522430 A CN201610522430 A CN 201610522430A CN 105970129 B CN105970129 B CN 105970129B
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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
- C22F1/057—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 copper as the next major constituent
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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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- Crystallography & Structural Chemistry (AREA)
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Abstract
The anisotropic low stress manufacturing process of 2A12 aluminum alloy forge pieces is eliminated the present invention relates to one kind, belongs to metal material engineering field.In aerospace field, according to the use of alloy product and force environment, higher, particularly airtight oscillating bearing forging is required to the anisotropy for reducing material, it is higher to tangential and radial direction the intensity of product and toughness reguirements.Particularly the airtight oscillating bearing of space flight suit, very high to the requirement on machining accuracy of product.For the aluminium alloy of heat-treatable strengthened class, larger quenching internal stress is there is in material after quenching, in material, for the high product of requirement on machining accuracy, waste product may be caused because of dimension overproof after finishing.Product can effectively be eliminated in tangential and radial direction anisotropy using this method, the internal stress of product has particularly been effectively eliminated, significantly improved the machining yield rate of product.
Description
Technical field
The anisotropic low stress manufacturing process of 2A12 aluminum alloy forge pieces is eliminated the present invention relates to one kind, belongs to metal material
Engineering field, product can be effectively eliminated in tangential and radial direction anisotropy using this method, be particularly effective
The internal stress of product is eliminated, the machining yield rate of product is significantly improved.
Background technology
In aerospace field, according to the use of alloy product and force environment, the anisotropy to reducing material
It is required that higher, particularly airtight oscillating bearing forging, higher to tangential and radial direction the intensity of product and toughness reguirements.Especially
It is the airtight oscillating bearing of space flight suit, it is very high to the requirement on machining accuracy of product.
Traditional manufacture method is directly processed using extruded barses and extruding tubing mostly, so processes obtained gas
Close oscillating bearing is more excellent in tangential performance, but also requires that higher radial direction performance is relatively low in stress, particularly material
The elongation of material is relatively low, and potential safety hazard is there is during long-term use.
In addition, for the aluminium alloy of heat-treatable strengthened class, being existed in material after quenching, in material larger
Quenching internal stress, for the high product of requirement on machining accuracy, may cause after finishing because of dimension overproof
Waste product.
The content of the invention
The purpose of the present invention is：The anisotropic low stress manufacture of 2A12 aluminum alloy forge pieces is eliminated the invention provides one kind
Technique, it is unobvious in tangential and radial direction anisotropy using the airtight oscillating bearing forging of the technique productions, effectively disappear
Except the internal stress of product, the machining yield rate of product is significantly improved.
The technical scheme is that：One kind eliminates the anisotropic low stress manufacturing process of 2A12 aluminum alloy forge pieces, should
Technique includes following step：
(1) selection raw material are the aluminium alloy extruded bar for the 2A12-O1 states for meeting GJB3539；
(2) the flat-die forging technique pulled out using two upsettings one prepares the 2A12 aluminum alloy forge pieces of the size of required product；
(3) 2A12 aluminum alloy forge pieces are quenched, quenches system：490~505 DEG C/2~6h, room temperature water quenching carries out 1-
5% precompressed compression deformation；
(4) artificial aging, combines cold cycling technique in ag(e)ing process.
In the step (2), blank heating system：380~420 DEG C/3~6h；Mould heating-up temperature is 380~420 DEG C.
Technological parameter in the step (4) is：- 100 DEG C~-120 DEG C/10min~30min, 160 DEG C~190 DEG C/
0.5h~4h, air cooling, -100 DEG C~-120 DEG C/10min~30min, 160 DEG C~190 DEG C/0.5h~4h, air cooling.
Production of the technique for aluminum alloy forge piece in Aeronautics and Astronautics, ship and automobile.
The beneficial effects of the invention are as follows：
1) multiple upsetting pull deformation process is carried out using 2A12 extruded bar stocks, effectively reduces the shadow that extruding forms texture
Ring, eliminate in tangential and radial direction anisotropy, and the deflection of aluminum alloy materials can be increased, enhance product performance.
2) use and carry out cold compression after quenching, and stress technique is eliminated in artificial aging process combination cold cycling, no
But cycle and the cost of production have been saved, the internal stress of product has also effectively been eliminated, the machining distortion amount of product is by original
± 200 μm be reduced to ± 50 μm, machining yield rate is more than 98%.
Brief description of the drawings
Fig. 1 is the TEM photos of 2A12 alloy forged pieces in the present invention.
Embodiment
One kind eliminates the anisotropic low stress manufacturing process of 2A12 aluminum alloy forge pieces, specifically comprising following step：
(1) raw material are the aluminium alloy extruded bar for the Ф 150mm2A12-O1 states for meeting GJB3539；
(2) the flat-die forging technique pulled out using two upsettings one prepares the 2A12 aluminum alloy forge pieces of the size of required product, specifically
Technique is：Blank heating system：380~420 DEG C/3~6h；Mould heating-up temperature is 380~420 DEG C；Billet size is Ф
150mm × 505mm, forging technology is：First upsetting is to 200mm, and first pulls out commutation pulling to Ф 200mm, the second upsetting to 135mm；
(3) the quenching system of 2A12 aluminum alloy forge pieces：490~505 DEG C/2~6h, room temperature water quenching carries out 1-5%'s immediately
Precompressed compression deformation.
(4) combine cold cycling technique during artificial aging to carry out, specific process parameter is：- 100 DEG C~-120
DEG C/10min~30min, 160 DEG C~190 DEG C/0.5h~4h, air cooling, -100 DEG C~-120 DEG C/10min~30min, 160 DEG C
~190 DEG C/0.5h~4h, air cooling.
Table 1 is given according to new technology proposed by the invention and the 2A12 aluminum alloy forge pieces of traditional handicraft preparation tangential
Implement illustration with the tensile property of radial direction.It can be found that the performance of the forging of present invention process preparation in the two directions is approached,
Almost without anisotropy, and the radial performance of traditional handicraft is more tangential mutually far short of what is expected, and particularly elongation is very low.
The present invention of table 1 and traditional handicraft prepare the performance comparison of forging
The machine that table 2 gives the 2A12 aluminum alloy forge pieces according to new technology proposed by the invention and traditional handicraft preparation adds
Work PERFORMANCE EXAMPLES is demonstrate,proved.It can be found that the internal stress of forging prepared by present invention process is small, machining distortion amount only has ± 50 μ
M, can meet the use requirement of product completely, and machining yield rate improves many compared with traditional handicraft.
The present invention of table 2 and traditional handicraft prepare the machinability of forging
| Preparation method | Machining distortion amount | Machine yield rate |
| The present invention | ±50μm | 98% |
| Traditional handicraft | ±200μm | 15% |
In summary, a kind of elimination anisotropic low stress manufacturing process of 2A12 aluminum alloy forge pieces of the present invention,
The influence that extruding forms texture is effectively reduced, properties of product are eliminated in tangential and radial direction anisotropy.In addition, using
Cold compression is carried out after quenching, and eliminates stress technique in artificial aging process combination cold cycling, has effectively eliminated product
Internal stress, reduce machining deformation, the machining yield rate of product is significantly improved.The technique may extend to other and can be heat-treated
Strengthen the aluminum alloy materials of class, high product particularly required to multiple directions performance and machining distortion, be related to Aero-Space,
The production of the aluminum alloy forge piece such as ship and automobile, with larger market potential.
Claims (3)
1. one kind eliminates the anisotropic low stress manufacturing process of 2A12 aluminum alloy forge pieces, it is characterised in that：The technique is included down
State step：
(1) selection raw material are the aluminium alloy extruded bar for the 2A12-O1 states for meeting GJB3539；
(2) the flat-die forging technique pulled out using two upsettings one prepares the 2A12 aluminum alloy forge pieces of the size of required product；
(3) 2A12 aluminum alloy forge pieces are quenched, quenches system：490~505 DEG C/2~6h, room temperature water quenching carries out 1-5%
Precompressed compression deformation；
(4) artificial aging, combines cold cycling technique in ag(e)ing process, and technological parameter is：- 100 DEG C~-120 DEG C/10min
~30min, 160 DEG C~190 DEG C/0.5h~4h, air cooling, -100 DEG C~-120 DEG C/10min~30min, 160 DEG C~190 DEG C/
0.5h~4h, air cooling.
2. low stress manufacturing process according to claim 1, it is characterised in that：In the step (2), blank heating system
Degree：380~420 DEG C/3~6h；Mould heating-up temperature is 380~420 DEG C.
3. low stress manufacturing process according to claim 1, it is characterised in that：The technique be used for Aeronautics and Astronautics, ship and
The production of aluminum alloy forge piece in automobile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610522430.9A CN105970129B (en) | 2016-07-05 | 2016-07-05 | One kind eliminates the anisotropic low stress manufacturing process of 2A12 aluminum alloy forge pieces |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610522430.9A CN105970129B (en) | 2016-07-05 | 2016-07-05 | One kind eliminates the anisotropic low stress manufacturing process of 2A12 aluminum alloy forge pieces |
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| Publication Number | Publication Date |
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| CN105970129A CN105970129A (en) | 2016-09-28 |
| CN105970129B true CN105970129B (en) | 2017-09-29 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110791721A (en) * | 2019-11-28 | 2020-02-14 | 西南铝业（集团）有限责任公司 | Quenching method of 2014 aluminum alloy aviation precision hub die forging |
| CN111822634B (en) * | 2020-05-26 | 2022-08-16 | 洛阳中重铸锻有限责任公司 | Shape control method for improving homogeneity of die steel |
| CN113088649A (en) * | 2021-03-30 | 2021-07-09 | 贵州航天电子科技有限公司 | Heat treatment method for bracket and bracket processing technology using heat treatment method |
| CN115584450A (en) * | 2022-08-30 | 2023-01-10 | 河南北方红阳机电有限公司 | 2A12 aluminum alloy graded annealing heat treatment process |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101649433B (en) * | 2009-07-10 | 2012-11-21 | 西南铝业（集团）有限责任公司 | Method for processing aluminum alloy plates |
| CN103131970B (en) * | 2011-11-22 | 2015-01-07 | 贵州航天乌江机电设备有限责任公司 | Aluminium alloy aging treatment method |
| CN102676959B (en) * | 2012-05-29 | 2014-02-05 | 苏州市新鸿基精密部品有限公司 | Aluminum alloy high and low temperature stress relief aging method |
| CN104372270A (en) * | 2014-10-24 | 2015-02-25 | 陈帆 | Processing method of 2A12 aluminum alloy plate |
| CN104357776A (en) * | 2014-10-24 | 2015-02-18 | 陈帆 | Processing method of 2014 aluminum alloy plate |
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