CN107937841A - A kind of aluminium alloy single-stage is dissolved the method that is rapidly heated - Google Patents
A kind of aluminium alloy single-stage is dissolved the method that is rapidly heated Download PDFInfo
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- CN107937841A CN107937841A CN201610889338.6A CN201610889338A CN107937841A CN 107937841 A CN107937841 A CN 107937841A CN 201610889338 A CN201610889338 A CN 201610889338A CN 107937841 A CN107937841 A CN 107937841A
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- temperature
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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
Abstract
The invention discloses a kind of aluminium alloy single-stage to be dissolved the method that is rapidly heated, furnace gas is heated to the solid solubility temperature for being far above aluminium alloy first, is then placed in aluminum alloy materials, and keeps furnace gas temperature constant until it reaches solid solubility temperature, furnace gas temperature is quickly reduced to the temperature again, is kept the temperature.The heating means that the present invention uses can be divided into three phases：Furnace gas constant temperature stage, furnace gas fast cooling stage and holding stage, its key are that the retention time in furnace gas constant temperature stage is accurately calculated.Material temperature fast and efficiently can be heated to solid solubility temperature by this method, reduce heat treatment time, improve production efficiency, while can avoid the performance loss caused by long-time heating.The process is easy to operate, can greatly improve production efficiency, cost-effective, has actual industrial production application value.
Description
Technical field
The present invention relates to a kind of solid solution heat treatment method of aluminium alloy, belongs to nonferrous materials and its hot-working field.
Background technology
Aluminum alloy junction component is because it is manufacturing the comprehensive advantage of cost, structural weight reduction and formability etc., in aviation, boat
My god, be widely used in the important lightweight overall structure such as navigation and communications and transportation.Industrial aluminium alloy structure part is generally heat
Processing can enhanced type aluminium alloy, it is necessary to by being dissolved, quenching, the heat treatment process such as timeliness obtain high intensity, high tenacity and corrosion resistant
Corrosion energy.For aluminum alloy materials, heat treating regime directly determines its tissue topography, and then influences its comprehensive performance.Existing liter
Furnace gas temperature is generally directly warming up to solid solubility temperature by warm method, and at this time, the temperature of aluminium alloy thickness section material will be far below admittedly
Solubility temperature by prolonged insulation, it is necessary to just be close to solid solubility temperature, and be difficult to reach solid solubility temperature.This temperature-rising method liter
Warm speed is excessively slow, and can not only extend heat treatment time reduces production efficiency, can also cause coarse grains, reduces material property.It is high
Structural member manufactured by performance aluminum alloy junction component is that the important lightweight such as Aeronautics and Astronautics, navigation and communications and transportation is integrally tied
The key position of structure, its performance and uniformity restrict such component load-bearing ability and safety of being on active service.As the current eka-aluminum closes
The development of golden structure tends to big specification integration and high combination property, and the heat treatment process of large-size aluminum alloy structural member is carried
New challenge is gone out.Therefore, inventing a kind of method that is rapidly heated of accurate control aluminium alloy thickness section material temperature has very
Important meaning.
The content of the invention
A kind of the fast of accurate control aluminum alloy materials temperature is provided it is an object of the invention to overcome the shortage of prior art
Fast temperature-rising method.
The purpose of the present invention is realized by the following method：A kind of aluminium alloy single-stage is dissolved the method that is rapidly heated, and is divided into three
Stage carries out：
1) furnace temperature constant periods：Furnace gas is heated to the solid solubility temperature far above aluminium alloy, places into aluminum alloy materials, and keep
Furnace temperature is constant until it reaches solid solubility temperature；
2) the fast cooling stage：When slab reaches solid solubility temperature, furnace gas temperature is quickly reduced to solid solubility temperature；
3) holding stage：Kept the temperature in solid solubility temperature；
It is characterized in that, it is necessary to the accurate time for calculating furnace temperature constant periods slab and reaching solid solubility temperature.
The method, the solid solubility temperature scope of the aluminium alloy is 70-550 DEG C.
The method, the furnace gas temperature of the furnace temperature constant periods should be 20-300 DEG C higher than solid solubility temperature.
The method, the furnace temperature constant periods material reach the time of solid solubility temperature by formula：T=Tf-(Tf-T0)e-At
Determine, in formula, TfFor furnace gas temperature, T0For material initial temperature, T is solid solubility temperature, and A is constant, and t reaches solid solution temperature for material
The time of degree.
The method, the value of the constant A is 9.8 × 10-6-1.0×10-3。
The present invention has considered below in technological design：In furnace temperature constant periods, furnace gas temperature is far above solid solubility temperature,
The temperature difference of furnace gas and material is always held at larger state in heating process, and initial programming rate can be made very fast；It will be risen in material
When temperature is to solid solubility temperature, the larger temperature difference is still remained, programming rate can be kept；In the furnace gas fast cooling stage, furnace gas temperature can be made
Degree is reduced to solid solubility temperature, can prevent material burning.
The invention has the advantages that：1. heat up, furnace gas temperature is far above solid solubility temperature, can effectively improve the heating speed of material
Degree.2. will be warming up to solid solubility temperature, furnace gas and material still remain the larger temperature difference, and material temperature can be made to be quickly ramped up to solid solution temperature
Degree.3. in the furnace gas fast cooling stage, furnace gas temperature can be made to be reduced to solid solubility temperature, can prevent material burning.4. due to heating
Time is greatly decreased, and material grains caused by the heating-up time can be prevented long are grown up, and can effectively improve component performance.5. the work
Process is easy to operate, and the heating-up time is reduced, and can greatly improve heat treatment production efficiency, cost-effective, has actual industrial life
Produce application value.
Brief description of the drawings
Fig. 1 is the heating curve of 7075 different heating modes of 30mm thickness.
Fig. 2 is the heating curve of 7050 different heating modes of 50mm thickness.
Fig. 3 is the heating curve of 7085 different heating modes of 180mm thickness.
Fig. 4 is that aluminium alloy thick plate single-stage of the present invention is rapidly heated the process schematic representation of method.
Embodiment
The present invention is intended to further illustrate with reference to embodiments, is not intended to limit the present invention.
Embodiment 1
Aluminium alloy thick plate material is 7075 aluminium alloys, and size is：3000×1200×30mm.Slab is placed in roller hearth type heating furnace
Middle progress single-stage solution treatment (470 DEG C)：In 530 DEG C of furnace gas, be put into slab, under the conditions of this value of constant A for 1.12 ×
10-3, calculate that furnace gas temperature is cooled to 470 DEG C after 25min, keep the temperature 35min.The temperature-rise period of slab is shown in Fig. 1.
Comparative example 1
Aluminium alloy thick plate material is 7075 aluminium alloys, and size is：3000×1200×30mm.Slab is placed in roller hearth type heating furnace
Middle progress single-stage solution treatment (470 DEG C)：Slab is placed directly within the conditions of 470 DEG C of furnace gases and keeps the temperature 60min.Slab temperature-rise period
See Fig. 1.
Embodiment 2
Aluminium alloy thick plate material is 7050 aluminium alloys, and size is：3150×1200×50mm.Slab is placed in roller hearth type heating furnace
Middle progress single-stage solution treatment (480 DEG C)：In 550 DEG C of furnace gas, be put into slab, under the conditions of this value of constant A for 6.92 ×
10-4, calculate that furnace gas temperature is cooled to 480 DEG C after 110min, keep the temperature 70min.The temperature-rise period of slab is shown in Fig. 2.
Comparative example 2
Aluminium alloy thick plate material is 7050 aluminium alloys, and size is：3150×1200×50mm.Slab is placed in roller hearth type heating furnace
Middle progress single-stage solution treatment (480 DEG C)：Slab is placed directly within the conditions of 480 DEG C of furnace gases and keeps the temperature 180min.Slab heated up
Journey is shown in Fig. 2.
Embodiment 3
Aluminium alloy thick plate material is 7085 aluminium alloys, and size is：1500×1200×180mm.Slab is placed in roller-bottom type heating
Single-stage solution treatment (485 DEG C) is carried out in stove：In 570 DEG C of furnace gas, be put into slab, under the conditions of this value of constant A for 2.2 ×
10-4, calculate that furnace gas temperature is cooled to 485 DEG C after 38min, keep the temperature 42min.The temperature-rise period of slab is shown in Fig. 3.
Comparative example 3
Aluminium alloy thick plate material is 7085 aluminium alloys, and size is：1500×1200×180mm.Slab is placed in roller-bottom type heating
Single-stage solution treatment (485 DEG C) is carried out in stove：Slab is placed directly within the conditions of 485 DEG C of furnace gases and keeps the temperature 80min.Slab heated up
Journey is shown in Fig. 3.
Claims (5)
- A kind of method 1. aluminium alloy single-stage solid solution is rapidly heated, is divided into three phases progress：Furnace temperature constant periods：Furnace gas is heated To the solid solubility temperature for being far above aluminium alloy, aluminum alloy materials are placed into, and keep furnace temperature constant until it reaches solid solubility temperature；It hurry up Prompt drop thermophase：When material reaches solid solubility temperature, furnace gas temperature is quickly reduced to solid solubility temperature；Holding stage：It is being dissolved Temperature；It is characterized in that, it is necessary to the accurate time for calculating furnace temperature constant periods material and reaching solid solubility temperature.
- 2. according to the method described in claim 1, it is characterized in that, the solid solubility temperature scope of the aluminum alloy materials is 70-550 ℃。
- 3. according to the method described in claim 1, it is characterized in that, the furnace gas temperature of the furnace temperature constant periods should be than solid solution temperature Spend 20-300 DEG C high.
- 4. according to the method described in claim 1, it is characterized in that, the furnace temperature constant periods material reach solid solubility temperature when Between by formula：Determine, in formula,T f For furnace gas temperature,T 0 For the initial temperature of material,TFor solid solution Temperature,AFor constant,tReach the time of solid solubility temperature for material.
- 5. the according to the method described in claim 4, it is characterized in that, constantAValue be 9.8 × 10-6-1.0×10-3。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610889338.6A CN107937841A (en) | 2016-10-12 | 2016-10-12 | A kind of aluminium alloy single-stage is dissolved the method that is rapidly heated |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610889338.6A CN107937841A (en) | 2016-10-12 | 2016-10-12 | A kind of aluminium alloy single-stage is dissolved the method that is rapidly heated |
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| CN107937841A true CN107937841A (en) | 2018-04-20 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113481361A (en) * | 2021-06-25 | 2021-10-08 | 中航工程集成设备有限公司 | Proportional cooling control method for heat treatment furnace of differential heating process |
| CN113832419A (en) * | 2021-09-27 | 2021-12-24 | 广西柳州银海铝业股份有限公司 | Aluminum alloy coiled material complete annealing method without protective atmosphere |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1600466A (en) * | 2004-10-14 | 2005-03-30 | 北京科技大学 | Method for preparing block of nano aluminum alloy in ultrahigh strength |
| CN102936708A (en) * | 2012-11-23 | 2013-02-20 | 江苏常铝铝业股份有限公司 | Aluminum alloy material temperature difference proportion annealing technique |
-
2016
- 2016-10-12 CN CN201610889338.6A patent/CN107937841A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1600466A (en) * | 2004-10-14 | 2005-03-30 | 北京科技大学 | Method for preparing block of nano aluminum alloy in ultrahigh strength |
| CN102936708A (en) * | 2012-11-23 | 2013-02-20 | 江苏常铝铝业股份有限公司 | Aluminum alloy material temperature difference proportion annealing technique |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113481361A (en) * | 2021-06-25 | 2021-10-08 | 中航工程集成设备有限公司 | Proportional cooling control method for heat treatment furnace of differential heating process |
| CN113832419A (en) * | 2021-09-27 | 2021-12-24 | 广西柳州银海铝业股份有限公司 | Aluminum alloy coiled material complete annealing method without protective atmosphere |
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Application publication date: 20180420 |
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