CN106623704A - Manufacturing method of low stress 2A70 aluminum alloy ring piece - Google Patents
Manufacturing method of low stress 2A70 aluminum alloy ring piece Download PDFInfo
- Publication number
- CN106623704A CN106623704A CN201611092426.XA CN201611092426A CN106623704A CN 106623704 A CN106623704 A CN 106623704A CN 201611092426 A CN201611092426 A CN 201611092426A CN 106623704 A CN106623704 A CN 106623704A
- Authority
- CN
- China
- Prior art keywords
- rolled
- core roller
- temperature
- feed speed
- aluminium alloy
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
- B21H1/00—Making articles shaped as bodies of revolution
- B21H1/06—Making articles shaped as bodies of revolution rings of restricted axial length
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
- B21J5/08—Upsetting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
- B21J5/10—Piercing billets
-
- 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
Abstract
The invention discloses a manufacturing method of a low stress 2A70 aluminum alloy ring piece. The manufacturing method includes the steps that firstly, a 2A70 aluminum alloy rod material is subjected to upsetting and punching after being heated and subjected to heat preservation, the ring piece is manufactured by means of pre-rolling and final rolling, and is subjected to solid solution treatment, aqueous media with the temperature larger than or equal to 85 DEG C are adopted during solid solution cooling, cold bulging is performed after solid solution, the bulging amount is 1.8% to 2.2%, aging treatment is performed after bulging, and therefore the low stress 2A70 aluminum alloy ring piece is obtained. By means of the method, the residual stress of the 2A70 aluminum alloy ring piece can be effectively eliminated, and the performance of forged pieces is improved. The method is used for manufacturing the low stress 2A70 aluminum alloy ring piece.
Description
Technical field
The present invention relates to a kind of manufacture method of annular element, more particularly to low stress 2A70 aluminium alloy rings manufacturers
Method.
Background technology
2A70 aluminium alloy rings are mainly applied to the class important spare part of aero-engine casing one, in actual applications Jing
Often there is the deformation of machine added-time, dimensional stability extreme difference, it is blank internal residual stress to cause part machine to add the key factor of deformation
Too high, reducing the internal residual stress of blank ring can effectively alleviate during part machine adds because residual stress release is caused
Deformation.At present residual stress is generally removed by following methods or is adjusted：1. de-stress is gone by heat effect, i.e., by heating
Adjustment is organized and residual stress is relaxed or is removed；2. removed with mechanism and adjust residual stress, i.e., using material
Material is internal to be produced plastic deformation to reach the purpose for lowering or adjusting residual stress.First method can not thoroughly remove remaining answering
Power, can typically only remove 30%～60% residual stress；Second method often destroys the integrality of forging.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of method using " solid solution+cold expanding shape+timeliness ", removes 2A70
The residual stress of aluminium alloy rings, can remove the residual stress of ring more than 90%, improve the performance of ring.
To solve above-mentioned technical problem, low stress 2A70 aluminium alloy rings manufacture methods of the present invention, its technical scheme
Comprise the following steps：
2A70 aluminium alloys are cutting into into bar according to certain specification；Electric furnace is lighted and 450 ± 10 DEG C are heated to, to temperature
Afterwards, 2A70 rodss and bars of aluminium alloy are put into into heating in electric furnace, insulation, temperature retention time is calculated by 1.8min/mm；By bar from electric furnace
Take out, being transferred under forcing press carries out jumping-up, punching and make middle base, transfer time≤50s；Middle base is melted down into while hot heating
To 450 ± 10 DEG C of insulations, temperature retention time presses 1.8min/mm；
Middle base is taken out and is rolled, rolled in advance for the first time：Core roller is rolled with the feed speed of 2.42mm/s, is reached
After estimated size, the feed speed of core roller is reduced to into 0.58mm/s, carries out campus；Roll in advance for the second time：Core roller is with 1.28mm/s's
Feed speed is rolled, and after reaching estimated size, the feed speed of core roller is reduced to into 0.33mm/s, carries out campus；For the third time
Roll in advance：Core roller is rolled with the feed speed of 0.75mm/s, after reaching estimated size, the feed speed of core roller is reduced to
0.42mm/s, carries out campus；Roll forming：Core roller is rolled with the feed speed of 0.37mm/s, after reaching estimated size, will
The feed speed of core roller is reduced to 0.09mm/s, carries out campus, then takes out and obtains 2A70 aluminium alloy rings；
2A70 aluminium alloy rings are put into into heating, insulation in the electric furnace that temperature is 530 ± 5 DEG C, temperature retention time is 170min
～180min；Then ring is taken out to be put in tank and is cooled down, transfer time≤10s, water temperature >=85 DEG C；
After taking out in ring bath groove, room temperature is cooled to, being put in shape expanding machine carries out cold expanding shape, bulging amount is 1.8%
～2.2%；
Ring after bulging is put into into heating, insulation, temperature retention time 11 hours～12 in the electric furnace that temperature is 190 ± 5 DEG C
Hour, disperse air cooling；Finally give the 2A70 aluminium alloy rings with low stress.
Compared with prior art, beneficial effects of the present invention are as follows：
Low stress 2A70 aluminium alloy rings manufacture methods of the present invention, the method for " solid solution+cold expanding shape+timeliness ", effectively
The residual stress for eliminating ring, ring size after roughing and heat treatment is relatively stable, effectively improves part machine and adds
Deformation afterwards.Solid solution cooling improves water temperature requirement using more than 85 DEG C of aqueous medium compared with traditional solution, increased water
Mobility (reduction viscosity), the uniformity of temperature, advantageously reduces residual stress level when being conducive to forging solid solution to cool down；Solid solution
After carry out cold expanding shape, bulging deformation amount controlling adjusts the residual stress inside forging 1.8%～2.2%, reduces residual stress
Level and improve stress distribution.
Specific embodiment
Implementing low stress 2A70 aluminium alloy rings manufacture methods of the present invention needs to provide forge furnace, pressure
The equipment such as machine, manipulator, looping mill, heat-treatment furnace, shape expanding machine, tank.Its specific embodiment：
The main chemical elements content (percentage by weight) of the 2A70 aluminium alloys is：Containing Mn amount≤0.2%, si content≤
0.35%th, ni content 0.9%～1.5%, containing Ti amount 0.02%～0.1%, containing Cu amount 1.9%～2.5%, containing Fe amount 0.9%
～1.5% ,≤0.3%, balance of Al is measured containing Mg amounts 1.4%～1.8%, containing Zn.
The step of this method, is as follows：
2A70 aluminium alloys are cutting into into bar according to certain specification；Electric furnace is lighted and 450 ± 10 DEG C are heated to, to temperature
Afterwards, 2A70 rodss and bars of aluminium alloy are put into into heating in electric furnace, insulation, temperature retention time is calculated by 1.8min/mm；By bar from electric furnace
Take out, being transferred under forcing press carries out jumping-up, punching and make middle base, transfer time≤50s；Middle base is melted down into while hot heating
To 450 ± 10 DEG C of insulations, temperature retention time presses 1.8min/mm；
Middle base is taken out and is rolled, rolled in advance for the first time：Core roller is rolled with the feed speed of 2.42mm/s, is reached
After estimated size, the feed speed of core roller is reduced to into 0.58mm/s, carries out campus；Roll in advance for the second time：Core roller is with 1.28mm/s's
Feed speed is rolled, and after reaching estimated size, the feed speed of core roller is reduced to into 0.33mm/s, carries out campus；For the third time
Roll in advance：Core roller is rolled with the feed speed of 0.75mm/s, after reaching estimated size, the feed speed of core roller is reduced to
0.42mm/s, carries out campus；Roll forming：Core roller is rolled with the feed speed of 0.37mm/s, after reaching estimated size, will
The feed speed of core roller is reduced to 0.09mm/s, carries out campus, then takes out and obtains 2A70 aluminium alloy rings；
2A70 aluminium alloy rings are put into into heating, insulation in the electric furnace that temperature is 530 ± 5 DEG C, temperature retention time is 170min
～180min；Then ring is taken out to be put in tank and is cooled down, transfer time≤10s, water temperature >=85 DEG C；
After taking out in ring bath groove, room temperature is cooled to, being put in shape expanding machine carries out cold expanding shape, bulging amount is 1.8%
～2.2%；
Ring after bulging is put into into heating, insulation, temperature retention time 11 hours～12 in the electric furnace that temperature is 190 ± 5 DEG C
Hour, disperse air cooling；Finally give the 2A70 aluminium alloy rings with low stress.
Claims (1)
1. a kind of low stress 2A70 aluminium alloy rings manufacture methods, it is characterised in that comprise the following steps：
2A70 aluminium alloys are cutting into into bar according to certain specification；Electric furnace is lighted and 450 ± 10 DEG C are heated to, to after temperature,
2A70 rodss and bars of aluminium alloy are put into into heating in electric furnace, insulation, temperature retention time is calculated by 1.8min/mm；Bar is taken from electric furnace
Go out, being transferred under forcing press carries out jumping-up, punching and make middle base, transfer time≤50s；Middle base is melted down while hot and is heated to
450 ± 10 DEG C of insulations, temperature retention time presses 1.8min/mm；
Middle base is taken out and is rolled, rolled in advance for the first time：Core roller is rolled with the feed speed of 2.42mm/s, reaches estimated
After size, the feed speed of core roller is reduced to into 0.58mm/s, carries out campus；Roll in advance for the second time：Core roller is with the feeding of 1.28mm/s
Speed is rolled, and after reaching estimated size, the feed speed of core roller is reduced to into 0.33mm/s, carries out campus；Third time is rolled in advance：
Core roller is rolled with the feed speed of 0.75mm/s, after reaching estimated size, the feed speed of core roller is reduced to into 0.42mm/s,
Carry out campus；Roll forming：Core roller is rolled with the feed speed of 0.37mm/s, after reaching estimated size, by entering for core roller
0.09mm/s is reduced to speed, campus is carried out, is then taken out and is obtained 2A70 aluminium alloy rings；
It is heating in 530 ± 5 DEG C of electric furnace, insulation that 2A70 aluminium alloy rings are put into into temperature, temperature retention time be 170min～
180min；Then ring is taken out to be put in tank and is cooled down, transfer time≤10s, water temperature >=85 DEG C；
By ring wash by water groove in take out after, be cooled to room temperature, being put in shape expanding machine carries out cold expanding shape, bulging amount be 1.8%～
2.2%；
Ring after bulging is put into heating in the electric furnace that temperature is 190 ± 5 DEG C, is incubated, temperature retention time 11 hours～12 hours,
Dispersion air cooling；Finally give the 2A70 aluminium alloy rings with low stress.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611092426.XA CN106623704A (en) | 2016-12-01 | 2016-12-01 | Manufacturing method of low stress 2A70 aluminum alloy ring piece |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611092426.XA CN106623704A (en) | 2016-12-01 | 2016-12-01 | Manufacturing method of low stress 2A70 aluminum alloy ring piece |
Publications (1)
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|---|---|
| CN106623704A true CN106623704A (en) | 2017-05-10 |
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ID=58813770
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|---|---|---|---|
| CN201611092426.XA Pending CN106623704A (en) | 2016-12-01 | 2016-12-01 | Manufacturing method of low stress 2A70 aluminum alloy ring piece |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107443023A (en) * | 2017-08-31 | 2017-12-08 | 武汉理工大学 | A kind of flexible processing method with muscle thin-walled large aluminum alloy cylinder |
| CN108247288A (en) * | 2017-12-18 | 2018-07-06 | 贵州航宇科技发展股份有限公司 | A kind of machining manufacture of Ti6242 titanium alloy thin walls ring |
| CN108890218A (en) * | 2018-05-16 | 2018-11-27 | 江苏理工学院 | A kind of high strength heat resistant alloy forge piece manufacturing process |
| CN110170606A (en) * | 2019-05-22 | 2019-08-27 | 中南大学 | A kind of preparation process of the high cylinder part of 2A14 aluminium alloy |
| CN111218629A (en) * | 2020-02-28 | 2020-06-02 | 株洲中车天力锻业有限公司 | High section of thick bamboo aluminum alloy ring destressing device |
| CN111283082A (en) * | 2020-02-27 | 2020-06-16 | 无锡派克新材料科技股份有限公司 | GH4169 low-pressure turbine casing uniform bulging process |
| CN111763895A (en) * | 2020-05-07 | 2020-10-13 | 山东南山铝业股份有限公司 | Method for eliminating residual stress of aluminum alloy aviation forging cylinder |
| CN112122540A (en) * | 2020-08-28 | 2020-12-25 | 豪梅特航空机件(苏州)有限公司 | High-temperature alloy ring-shaped piece micro-stress forging process |
| CN112877621A (en) * | 2021-01-14 | 2021-06-01 | 西北工业大学 | Cold bulging method for regulating residual stress of aluminum alloy ring piece and improving mechanical property |
| CN113355501A (en) * | 2020-03-02 | 2021-09-07 | 中车戚墅堰机车车辆工艺研究所有限公司 | Heat treatment method for nodular iron castings and nodular iron castings obtained by heat treatment method |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107443023A (en) * | 2017-08-31 | 2017-12-08 | 武汉理工大学 | A kind of flexible processing method with muscle thin-walled large aluminum alloy cylinder |
| CN108247288A (en) * | 2017-12-18 | 2018-07-06 | 贵州航宇科技发展股份有限公司 | A kind of machining manufacture of Ti6242 titanium alloy thin walls ring |
| CN108890218A (en) * | 2018-05-16 | 2018-11-27 | 江苏理工学院 | A kind of high strength heat resistant alloy forge piece manufacturing process |
| CN110170606A (en) * | 2019-05-22 | 2019-08-27 | 中南大学 | A kind of preparation process of the high cylinder part of 2A14 aluminium alloy |
| CN111283082A (en) * | 2020-02-27 | 2020-06-16 | 无锡派克新材料科技股份有限公司 | GH4169 low-pressure turbine casing uniform bulging process |
| CN111218629A (en) * | 2020-02-28 | 2020-06-02 | 株洲中车天力锻业有限公司 | High section of thick bamboo aluminum alloy ring destressing device |
| CN111218629B (en) * | 2020-02-28 | 2024-02-09 | 株洲中车天力锻业有限公司 | High section of thick bamboo aluminum alloy ring destressing device |
| CN113355501A (en) * | 2020-03-02 | 2021-09-07 | 中车戚墅堰机车车辆工艺研究所有限公司 | Heat treatment method for nodular iron castings and nodular iron castings obtained by heat treatment method |
| CN111763895A (en) * | 2020-05-07 | 2020-10-13 | 山东南山铝业股份有限公司 | Method for eliminating residual stress of aluminum alloy aviation forging cylinder |
| CN112122540A (en) * | 2020-08-28 | 2020-12-25 | 豪梅特航空机件(苏州)有限公司 | High-temperature alloy ring-shaped piece micro-stress forging process |
| CN112122540B (en) * | 2020-08-28 | 2022-08-05 | 豪梅特航空机件(苏州)有限公司 | High-temperature alloy ring-shaped piece micro-stress forging process |
| CN112877621A (en) * | 2021-01-14 | 2021-06-01 | 西北工业大学 | Cold bulging method for regulating residual stress of aluminum alloy ring piece and improving mechanical property |
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Application publication date: 20170510 |