CN106148862A - Large cylindrical tubular aluminium alloy castings creep ageing heat treatment method - Google Patents
Large cylindrical tubular aluminium alloy castings creep ageing heat treatment method Download PDFInfo
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Abstract
The present invention relates to large cylindrical tubular field of aluminum alloy heat treatment technology, specifically disclose a kind of large cylindrical tubular aluminium alloy castings creep ageing heat treatment method.The method includes: 1, aluminium alloy castings is machined to semifinishing state；2, the aluminium alloy castings of semifinishing state is carried out solution treatment；3, the aluminium alloy castings after solution treatment is carried out the cooling process that quenches；4, utilize school shape frock that aluminium alloy castings end face circularity is corrected shape；5, utilizing creep ageing frock, aluminium alloy castings carried out position constraint, and utilize the small creep properties of aluminium alloy castings, the overall dimensions enabling aluminum alloy to foundry goods obtains finishing and close to machining dimension precision.The method utilizes creep ageing Technology for Heating Processing, the large tube-like aluminium alloy castings heat treatment dimensional accuracy acquisition under keeping higher force performance premise that can realize polish state is substantially improved, end face circularity reaches≤0.5mm, and heat treatment dimensional accuracy is close to machining level.
Description
Technical field
The invention belongs to large cylindrical tubular field of aluminum alloy heat treatment technology, be specifically related to a kind of large cylindrical
Tubular aluminium alloy castings creep ageing heat treatment method.
Background technology
Creep ageing technology is to utilize metal material creep properties, will shape Tong Bu carried out with Ageing Treatment
Plant manufacturing process.The method due to after product shaping springback capacity little, forming accuracy is high, and internal residual stress is low
And the feature such as be evenly distributed, being suitable to can be outside the overall band muscle of ageing strengthening type alloy and Varying-thickness deep camber complexity
Shape structural member, typical creep technical process is divided into loading, artificial aging, unloads 3 stages.To part
Imposed load heats and is incubated, the partial elastic deformation after the constraint removing frock, on be applied to part
Under the effect of creep and stress relaxation and ageing mechanism, it is changed into permanent plastic deformation, so that part exists
While completing ageing strengthening, it is thus achieved that required profile.The creep ageing technology that there is now is mainly used in can timeliness
The complexity high muscle integral panel molding of enhanced type alloy, during for the creep of large cylindrical tubular aluminium alloy castings
Effect heat treatment technics aspect still belongs to technology vacancy, needs to explore further and study.
Summary of the invention
It is an object of the invention to provide a kind of large cylindrical tubular aluminium alloy castings creep ageing heat treatment side
Method, utilizes the feature that springback capacity is little, forming accuracy is high of creep technology, reaches large tube-like heat treating castings
Effective control of deformation so that large cylindrical tubular aluminium alloy castings heat treatment reaches higher dimensional accuracy.
Technical scheme is as follows: a kind of large cylindrical tubular aluminium alloy castings creep ageing heat treatment side
Method, the method specifically includes:
Step 1, aluminium alloy castings is machined to semifinishing state；
Step 2, aluminium alloy castings to semifinishing state carry out solution treatment；
Step 3, the aluminium alloy castings after solution treatment is carried out quench cooling process；
Step 4, utilize school shape frock that aluminium alloy castings end face circularity is corrected shape；
Step 5, utilize creep ageing frock, aluminium alloy castings was carried out position constraint, and utilizes aluminium alloy
The small creep properties of foundry goods, the overall dimensions enabling aluminum alloy to foundry goods obtains finishing and close to machining dimension essence
Degree.
In described step 1, the aluminium alloy castings of cylindrical tube shape is machined to cylindrical 2～6mm surplus, highly
Half finishing state of 3～6mm surpluses.
Described step 2 carries out solution treatment to aluminium alloy castings concretely comprise the following steps: to semifinishing shape
The aluminium alloy castings of state carries out solution treatment, was heated to solid solubility temperature Tq by 2 hours, and is incubated 14～18
Hour, wherein, the solid solubility temperature Tq in aluminium alloy castings solution treatment is that in foundry goods aluminium alloy, β phase dissolves in base
Body is completely reformed into finishing temperature during single-phase αsolidsolution.
In described step 3, the step that the aluminium alloy castings after solution treatment carries out quenching cooling process is:
By the aluminium alloy castings after solution treatment with axially vertically such as water mode, entrance cooling medium is organic quenching liquid,
And cool down 10min.
In described step 4, utilize school shape frock that aluminium alloy castings end face circularity is corrected shape, its school shape
Circularity≤2mm, is installed in frock to facilitate.
Described step 5 specifically includes: loaded by aluminium alloy castings in creep ageing frock, and carried out fixed
Position constraint；It is incubated under aging temp, and after insulation terminates, is cooled to room temperature in atmosphere.
The remarkable result of the present invention is: a kind of large cylindrical tubular aluminium alloy castings creep of the present invention
Ageing hot processing method, utilizes creep ageing Technology for Heating Processing, it is possible to achieve the large tube-like of polish state
Aluminium alloy castings heat treatment dimensional accuracy under keeping higher force performance premise obtains and is substantially improved, end face circle
Degree reaches≤0.5mm, and heat treatment dimensional accuracy is close to machining level.
Detailed description of the invention
A kind of large cylindrical tubular aluminium alloy castings creep ageing heat treatment method, the method specifically includes as follows
Step:
Step 1, aluminium alloy castings is machined to semifinishing state；
Cylindrical tube shape aluminium alloy castings is machined to half essence of cylindrical 2～6mm surplus, highly 3～6mm surplus
Add state；
Step 2, aluminium alloy castings to semifinishing state carry out solution treatment；
The aluminium alloy castings of semifinishing state is carried out solution treatment, is heated to solid solubility temperature by 2 hours
Tq, and it is incubated 14～18 hours, wherein, the solid solubility temperature Tq in aluminium alloy castings solution treatment is foundry goods aluminum
In alloy, β phase dissolves in finishing temperature when matrix is completely reformed into single-phase αsolidsolution；
Aluminium alloy castings after step 3, solution treatment carries out the cooling process that quenches；
By the aluminium alloy castings after solution treatment with axially vertically such as water mode, entrance cooling medium is organic quenching
Fire liquid, and cool down 5～10min；
Step 4, utilize school shape frock that aluminium alloy castings end face circularity is corrected shape；
The aluminium alloy castings end face circularity utilizing school shape frock to deform solid solution corrects shape, and school shape circularity≤
2mm, is installed in frock to facilitate；
Step 5, utilize creep ageing frock, aluminium alloy castings was carried out position constraint, and utilizes aluminium alloy
The small creep properties of foundry goods, the overall dimensions enabling aluminum alloy to foundry goods obtains finishing and close to machining dimension essence
Degree；
Aluminium alloy castings is loaded in creep ageing frock, and carried out position constraint；Protect under aging temp
Temperature, and after insulation terminates, it is cooled to room temperature in atmosphere.
For a certain specific Cast aluminium alloy gold, its ageing strengthening temperature is fixed value, and people in the art
Member is according to Its Relevant Technology Standards, it is possible to be readily available the ageing strengthening temperature of certain Cast aluminium alloy gold.According to aluminum
The material property of alloy aluminum alloy-steel casting and the difference of size, it may be determined that with this aluminium alloy aluminium alloy castings phase
The frock of coupling, and select suitable solid solubility temperature and aging temp.
Claims (6)
1. a large cylindrical tubular aluminium alloy castings creep ageing heat treatment method, it is characterised in that: the party
Method specifically includes:
Step 1, aluminium alloy castings is machined to semifinishing state；
Step 2, aluminium alloy castings to semifinishing state carry out solution treatment；
Step 3, the aluminium alloy castings after solution treatment is carried out quench cooling process；
Step 4, utilize school shape frock that aluminium alloy castings end face circularity is corrected shape；
Step 5, utilize creep ageing frock, aluminium alloy castings was carried out position constraint, and utilizes aluminium alloy
The small creep properties of foundry goods, the overall dimensions enabling aluminum alloy to foundry goods obtains finishing and close to machining dimension essence
Degree.
A kind of large cylindrical tubular aluminium alloy castings creep ageing heat treatment side the most according to claim 1
Method, it is characterised in that: in described step 1, the aluminium alloy castings of cylindrical tube shape is machined to cylindrical 2～6mm
Surplus, highly 3～half finishing state of 6mm surplus.
A kind of large cylindrical tubular aluminium alloy castings creep ageing heat treatment side the most according to claim 1
Method, it is characterised in that: described step 2 carries out solution treatment to aluminium alloy castings and concretely comprises the following steps:
The aluminium alloy castings of semifinishing state is carried out solution treatment, is heated to solid solubility temperature Tq by 2 hours,
And it is incubated 14～18 hours, wherein, the solid solubility temperature Tq in aluminium alloy castings solution treatment is foundry goods aluminium alloy
Middle β phase dissolves in finishing temperature when matrix is completely reformed into single-phase αsolidsolution.
A kind of large cylindrical tubular aluminium alloy castings creep ageing heat treatment side the most according to claim 1
Method, it is characterised in that: in described step 3, the aluminium alloy castings after solution treatment is carried out quenching cooling
The step of process is: by the aluminium alloy castings after solution treatment with the most vertically such as water mode, entrance cooling Jie
Matter is organic quenching liquid, and cools down 10min.
A kind of large cylindrical tubular aluminium alloy castings creep ageing heat treatment side the most according to claim 1
Method, it is characterised in that: in described step 4, utilize school shape frock that aluminium alloy castings end face circularity is carried out
School shape, its school shape circularity≤2mm, it is installed in frock to facilitate.
A kind of large cylindrical tubular aluminium alloy castings creep ageing heat treatment side the most according to claim 1
Method, it is characterised in that: described step 5 specifically includes: loaded by aluminium alloy castings in creep ageing frock,
And carried out position constraint；It is incubated under aging temp, and after insulation terminates, is cooled to room in atmosphere
Temperature.
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| CN201510184155.XA CN106148862B (en) | 2015-04-17 | 2015-04-17 | Large cylindrical tubular aluminium alloy castings creep ageing heat treatment method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109112446A (en) * | 2018-09-13 | 2019-01-01 | 湖北三江航天红阳机电有限公司 | Large thin-wall high strength alumin ium alloy bipyramid diamond shape entirety cabin shell precision casting molding method |
| CN109382633A (en) * | 2018-11-09 | 2019-02-26 | 湖北三江航天江北机械工程有限公司 | The shape precision control method of Solid Rocket Motor combustion chamber shell |
| CN110592344A (en) * | 2019-10-30 | 2019-12-20 | 中国航空制造技术研究院 | Clamping device for heat treatment of sliding rail sleeve and heat treatment method |
| CN112338003A (en) * | 2020-09-29 | 2021-02-09 | 哈尔滨工业大学 | Shape correction method for manufacturing deformation of aluminum-magnesium alloy thin-wall cabin section |
| CN116145054A (en) * | 2022-09-09 | 2023-05-23 | 湖北超卓航空科技股份有限公司 | Aluminum alloy additive material heat treatment process |
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| US20060076093A1 (en) * | 2002-11-13 | 2006-04-13 | Alcoa Inc. | Artificial aging control of aluminum alloys |
| CN102978545A (en) * | 2012-11-21 | 2013-03-20 | 中南大学 | Method for creep age forming of Al-Zn-Mg-Cu series aluminium alloy plate |
| CN103540875A (en) * | 2013-03-09 | 2014-01-29 | 中南大学 | Bending, creeping and ageing method for Al-Zn-Mg-Cu aluminum-alloy plate |
| CN104493430A (en) * | 2014-11-06 | 2015-04-08 | 首都航天机械公司 | Storage-tank cylindrical-section integral wallboard creep aging forming method |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20060076093A1 (en) * | 2002-11-13 | 2006-04-13 | Alcoa Inc. | Artificial aging control of aluminum alloys |
| CN102978545A (en) * | 2012-11-21 | 2013-03-20 | 中南大学 | Method for creep age forming of Al-Zn-Mg-Cu series aluminium alloy plate |
| CN103540875A (en) * | 2013-03-09 | 2014-01-29 | 中南大学 | Bending, creeping and ageing method for Al-Zn-Mg-Cu aluminum-alloy plate |
| CN104493430A (en) * | 2014-11-06 | 2015-04-08 | 首都航天机械公司 | Storage-tank cylindrical-section integral wallboard creep aging forming method |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109112446A (en) * | 2018-09-13 | 2019-01-01 | 湖北三江航天红阳机电有限公司 | Large thin-wall high strength alumin ium alloy bipyramid diamond shape entirety cabin shell precision casting molding method |
| CN109382633A (en) * | 2018-11-09 | 2019-02-26 | 湖北三江航天江北机械工程有限公司 | The shape precision control method of Solid Rocket Motor combustion chamber shell |
| CN110592344A (en) * | 2019-10-30 | 2019-12-20 | 中国航空制造技术研究院 | Clamping device for heat treatment of sliding rail sleeve and heat treatment method |
| CN112338003A (en) * | 2020-09-29 | 2021-02-09 | 哈尔滨工业大学 | Shape correction method for manufacturing deformation of aluminum-magnesium alloy thin-wall cabin section |
| CN112338003B (en) * | 2020-09-29 | 2023-06-20 | 哈尔滨工业大学 | Shape correction method for manufacturing deformation of aluminum-magnesium alloy thin-wall cabin section |
| CN116145054A (en) * | 2022-09-09 | 2023-05-23 | 湖北超卓航空科技股份有限公司 | Aluminum alloy additive material heat treatment process |
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| CN106148862B (en) | 2018-02-13 |
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