CN106756677A - A kind of method of reduction 2A50 alloy extrusion bar coarse grain ring depth - Google Patents
A kind of method of reduction 2A50 alloy extrusion bar coarse grain ring depth Download PDFInfo
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- CN106756677A CN106756677A CN201611247876.1A CN201611247876A CN106756677A CN 106756677 A CN106756677 A CN 106756677A CN 201611247876 A CN201611247876 A CN 201611247876A CN 106756677 A CN106756677 A CN 106756677A
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- coarse grain
- grain ring
- ring depth
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- alloy extrusion
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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
- C22F1/057—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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- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Engineering & Computer Science (AREA)
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- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Extrusion Of Metal (AREA)
- Forging (AREA)
Abstract
Include the invention discloses a kind of method of reduction 2A50 alloy extrusion bar coarse grain ring depth, the step of make the alloy：Prepare ingot casting, ingot casting heating, extrusion process, quenching technical；The ingot casting is heated to 420 DEG C by heating furnace.In specific experiment, ingot casting is heated to 420 DEG C and is extruded and quenching technical, can reduce the coarse grain ring depth of 2A50 alloys, improves the qualification rate of product, reduces economic loss.Therefore, the method for the reduction 2A50 alloy extrusion bar coarse grain ring depth that the present invention is provided, can reduce coarse grain ring depth, improve the qualification rate of product, solve the problem in the field at this stage.
Description
Technical field
The present invention relates to aluminium alloy extruded manufacture field, more specifically, design is a kind of to reduce 2A50 alloy extrusion bars
The method of coarse grain ring depth.
Background technology
In aluminium alloy extruded manufacture field, coarse grain ring depth directly reduces the process based prediction model of product, makes product
Qualification rate declines, or even causes huge economic loss.
For 2A50 alloys, because its it is hot under possess very strong plasticity, be easy to forging punching press the features such as, its extruded rod
Material is commonly used for the forging blank of aerospace field.In order that 2A50 alloy extrusion bars further meet aerospace field
It is required that, its performance need to be improved by reducing the coarse grain ring depth of bar.
For present Research, influenceing the factor of coarse grain ring depth has a lot, such as the component of alloy, squeezing parameter, quenching
Insulation parameter etc..At this stage, the coarse grain ring depth of 2A50 alloy extrusion bars how is reduced, the qualification rate of product is improved, is turned into
The emphasis of the area research.
Therefore, how to reduce coarse grain ring depth, improve the qualification rate of product, be field difficulty urgently to be resolved hurrily at this stage
Topic.
The content of the invention
In view of this, it is an object of the invention to provide a kind of side of reduction 2A50 alloy extrusion bar coarse grain ring depth
Method, the method can reduce coarse grain ring depth, improve the qualification rate of product, solve the problem in the field at this stage.
The step of a kind of method of reduction 2A50 alloy extrusion bar coarse grain ring depth, making 2A50 alloys, includes：
Prepare ingot casting；
Ingot casting is heated, using heating ingot casting described in stove heat to 420 DEG C；
Extrusion process, the ingot casting is extruded using recipient, obtains bar；
Quenching technical, stove heat and is incubated the macrostructure sample of the bar, and obtain thick by inspection using quenching
The qualified 2A50 alloy extrusion bars of brilliant ring depth.
Preferably, the method for the reduction 2A50 alloy extrusion bar coarse grain ring depth, the composition of the ingot casting also includes
Mn。
Preferably, the method for the reduction 2A50 alloy extrusion bar coarse grain ring depth, the accounting of Mn exists in the ingot casting
Between 0.6%-0.8%.
Preferably, the method for the reduction 2A50 alloy extrusion bar coarse grain ring depth, the temperature of the recipient is 450
℃。
The method of the reductions 2A50 alloy extrusion bar coarse grain ring depth that the present invention is provided, bag the step of make the alloy
Include：Prepare ingot casting, ingot casting heating, extrusion process, quenching technical；The ingot casting is heated to 420 DEG C by heating furnace.Specifically trying
In testing, ingot casting is heated to 420 DEG C and is extruded and quenching technical, can reduce the coarse grain ring depth of 2A50 alloys, improves and produces
The qualification rate of product, reduces economic loss.Therefore, the side of the reduction 2A50 alloy extrusion bar coarse grain ring depth that the present invention is provided
Method, can reduce coarse grain ring depth, improve the qualification rate of product, solve the problem in the field at this stage.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the flow chart of making 2A50 alloy extrusion bars in the specific embodiment of the invention.
Specific embodiment
The core of this specific embodiment is to provide a kind of method of reduction 2A50 alloy extrusion bar coarse grain ring depth,
The method can reduce coarse grain ring depth, improve the qualification rate of product, solve the problem in the field at this stage.
Hereinafter, embodiment is illustrated referring to the drawings.Additionally, embodiments illustrated below is not to described in claim
The content of the invention rise any restriction effect.In addition, the full content of the composition represented by example below is not limited to as right
It is required that necessary to the solution of described invention.
The method of the reduction 2A50 alloy extrusion bar coarse grain ring depth that this specific embodiment is provided, makes the alloy and squeezes
The step of pressure bar material, mainly includes：Prepare ingot casting, ingot casting heating, extrusion process, quenching technical.2A50 alloys are because possessing under hot
Very strong plasticity, the features such as be easy to forging punching press, and the forging blank of aerospace field is commonly used for, in recent years, with this
The development in field, the demand to 2A50 alloys increases.In order to further improve the performance of the alloy and the qualification rate of product, need
Reduce 2A50 alloy extrusion bar coarse grain ring depth.Please specifically refer to Fig. 1.
For present Research, influenceing the factor of 2A50 alloy extrusion bar coarse grain ring depth mainly includes：The group of ingot casting
Part and content, the temperature of ingot casting, the temperature of recipient, extrusion speed, Quenching Soaking Time.In test, specific data such as table 1
It is shown.In table 1, mark under different parameters, the qualification rate of extruded barses.
The method of the reduction 2A50 alloy extrusion bar coarse grain ring depth that this specific embodiment is provided, by the data of table 1
Analysis understands that on the premise of other conditions are certain, the length of ingot casting does not have significant impact to coarse grain ring depth.
The test data statistical form of table 1
The method of the reduction 2A50 alloy extrusion bar coarse grain ring depth that this specific embodiment is provided, in other conditions one
On the premise of fixed, when Mn contents are respectively 0.61% and 0.63%, and without Cr, Zr in the case of, with 520 DEG C of quenching technical
X240min is defined, and two heats, six batches produce 24 material altogether, wherein 15 qualified, 9 unqualified.When Mn contents difference
It is 0.71%, 0.69% and 0.58%, and in the case of addition Cr, Zr each 0.03%, three heats, six batches produce 28 altogether
Individual material, wherein 25 qualified, 3 unqualified.
In sum, on the premise of quenching technical is 520 DEG C of x240min, and other conditions are certain, high Mn content is carried
Meanwhile, Cr, Zr are added, the depth of coarse grain ring can be to a certain extent reduced, it is possible to increase the qualification rate of product, while reducing
Production cost.In specific operation, the effect of 2A50 alloy coarse grain ring depth, Mn in ingot casting are preferably reduced to reach
Content can be between 0.6%-0.8%, and the content of Cr and Zr is no more than 0.05%.Certainly, the selection of design parameter, can be with
Depending on actual conditions.
The method of the reduction 2A50 alloy coarse grain ring depth that this specific embodiment is provided, in the certain premise of other conditions
Under, during extrusion process, when the temperature of recipient is 450 DEG C, the temperature of ingot casting is 420 DEG C, and extrusion speed is not more than
During 0.2m/min, four batches, 29 material being produced altogether, all being met the requirements, qualification rate is 100%.And from data, at this
Under the conditions of, Quenching Soaking Time has no significant effect to 2A50 alloy coarse grain ring depth.
The method of the reduction 2A50 alloy coarse grain ring depth that this specific embodiment is provided, in the certain premise of other conditions
Under, during extrusion process, when the temperature of recipient is 450 DEG C, the temperature of ingot casting is 420 DEG C, and extrusion speed is not less than
During 0.8m/min, three batches, 11 material are produced altogether, wherein 9 qualified, 2 unqualified.
The method of the reduction 2A50 alloy extrusion bar coarse grain ring depth that this specific embodiment is provided, in other conditions one
On the premise of fixed, during extrusion process, when the temperature of recipient is 490 DEG C, the temperature of ingot casting is 520 DEG C, and extrusion speed
During no more than 0.2m/min, three batches, 12 material are produced altogether, wherein 2 qualified, 10 unqualified.And, in this condition, produce
Product qualification rate is relevant with Quenching Soaking Time, i.e., when Quenching Soaking Time is more long, product it is qualified low；Work as Quenching Soaking Time
When shorter, the qualified height of product.
In sum, on the premise of other conditions are certain, during extrusion process, when the temperature of recipient is 450 DEG C,
The temperature of ingot casting is 420 DEG C, and extrusion speed, when being not more than 0.2m/min, the qualification rate of product is higher, and coarse grain ring depth is obtained
Preferably control.
The method of the reduction 2A50 alloy coarse grain ring depth that this specific embodiment is provided, according to the data in table 1, analysis
Can obtain, when being extruded according to low temperature low speed, Quenching Soaking Time does not have significant impact to coarse grain ring depth；It is low according to high temperature
During speed extruding, Quenching Soaking Time is shorter, and the control effect to coarse grain ring depth is better.
The method of the reduction 2A50 alloy extrusion bar coarse grain ring depth that this specific embodiment is provided, by data above point
Analysis understands that optimal implementation parameter can be that between 0.6%-0.8%, the accounting of Cr and Zr is not for the content of Mn in ingot casting
More than 0.05%；In extrusion process, the temperature of recipient is 450 DEG C, and the temperature of ingot casting is 420 DEG C, and extrusion speed is little
When 0.2m/min, the qualification rate of product is higher, and coarse grain ring depth can be controlled preferably.Certainly, specifically implementing
In, further extrusion speed can be tested, such as improve extrusion speed in certain limit.
The method of the reduction 2A50 alloy extrusion bar coarse grain ring depth that this specific embodiment is provided, if according to this technique
Gone into operation, when feeding intake 49.448 tons, can be delivered goods 39.259 tons, i.e., yield rate is up to 71.3%.The method, can not only reduce
The depth of 2A50 alloy extrusion bar coarse grain rings, additionally it is possible to obtain the output value higher, efficiently solve problem of the prior art.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or uses the present invention.
Various modifications to these embodiments will be apparent for those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, the present invention
The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one
The scope most wide for causing.
Claims (4)
1. a kind of method of reduction 2A50 alloy extrusion bar coarse grain ring depth, it is characterised in that make the 2A50 alloys
Step includes：
Prepare ingot casting；
Ingot casting is heated, using heating ingot casting described in stove heat to 420 DEG C；
Extrusion process, the ingot casting is extruded using recipient, obtains bar；
Quenching technical, stove heat and is incubated the macrostructure sample of the bar, and obtain coarse grain ring by inspection using quenching
The qualified 2A50 alloy extrusion bars of depth.
2. the method for reducing 2A50 alloy extrusion bar coarse grain ring depth according to claim 1, it is characterised in that the casting
The composition of ingot also includes Mn.
3. the method for reducing 2A50 alloy extrusion bar coarse grain ring depth according to claim 2, it is characterised in that the casting
The accounting of Mn is between 0.6%-0.8% in ingot.
4. the method for reducing 2A50 alloy extrusion bar coarse grain ring depth according to claim 1, it is characterised in that described to squeeze
The temperature of pressure cylinder is 450 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611247876.1A CN106756677A (en) | 2016-12-29 | 2016-12-29 | A kind of method of reduction 2A50 alloy extrusion bar coarse grain ring depth |
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| CN201611247876.1A CN106756677A (en) | 2016-12-29 | 2016-12-29 | A kind of method of reduction 2A50 alloy extrusion bar coarse grain ring depth |
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| CN106756677A true CN106756677A (en) | 2017-05-31 |
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| CN201611247876.1A Pending CN106756677A (en) | 2016-12-29 | 2016-12-29 | A kind of method of reduction 2A50 alloy extrusion bar coarse grain ring depth |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112323000A (en) * | 2020-11-13 | 2021-02-05 | 西南铝业（集团）有限责任公司 | Method for eliminating coarse crystal ring of alloy extrusion product |
-
2016
- 2016-12-29 CN CN201611247876.1A patent/CN106756677A/en active Pending
Non-Patent Citations (3)
| Title |
|---|
| 梁世斌: "《铝合金挤压及热处理》", 31 May 2015, 中南大学出版社 * |
| 武红林等: "《铝合金型棒材挤压生产》", 31 December 2011, 中南大学出版社 * |
| 温景林等: "《有色金属挤压与拉拔技术》", 31 August 2007, 化学工业出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112323000A (en) * | 2020-11-13 | 2021-02-05 | 西南铝业（集团）有限责任公司 | Method for eliminating coarse crystal ring of alloy extrusion product |
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Application publication date: 20170531 |