CN106676438B - A method of improving aluminum alloy heat forming efficiency and formability - Google Patents
A method of improving aluminum alloy heat forming efficiency and formability Download PDFInfo
- Publication number
- CN106676438B CN106676438B CN201611164090.3A CN201611164090A CN106676438B CN 106676438 B CN106676438 B CN 106676438B CN 201611164090 A CN201611164090 A CN 201611164090A CN 106676438 B CN106676438 B CN 106676438B
- Authority
- CN
- China
- Prior art keywords
- aluminum alloy
- heating furnace
- temperature
- forming efficiency
- heat forming
- Prior art date
- 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.)
- Active
Links
Classifications
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/68—Temporary coatings or embedding materials applied before or during heat treatment
- C21D1/70—Temporary coatings or embedding materials applied before or during heat treatment while heating or quenching
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
The invention discloses a kind of raising aluminum alloy heat forming efficiency and the methods of formability, include the following steps：(1) coating with high-absorbility and with lubricating action is coated on aluminum alloy blank surface；(2) aluminum alloy blank is placed in the first heating furnace for setting specific heating temperature and heats and keeps the temperature；(3) aluminum alloy blank is transferred to after being taken out in the first heating furnace on shaping dies；(4) shaping dies is closed under the drive of forcing press makes the aluminum alloy blank forming and pressurize cooling；(5) it part after cooling will be shaped is placed in the second heating furnace for setting specific heating temperature and heat and keep the temperature, taken out after carrying out artificial aging, you can aluminum alloy part after being shaped.The method of the present invention significantly shortens solution treatment and the artificial aging processing time of aluminium alloy, and forming property when improving aluminum alloy heat forming improves the utilization ratio of energy, greatly improves the hot formed production efficiency of aluminium alloy and product quality.
Description
Technical field
The invention belongs to aluminum alloy heat processing and hot forming fields, are shaped more particularly, to a kind of raising aluminum alloy heat
The method of efficiency and formability.
Background technology
In recent years, in order to meet the needs of safety and energy-saving and emission-reduction (loss of weight), high-performance metal plate (such as high-strength steel and
Aluminium alloy etc.) it receive widespread attention.China Automobile Industry so far, steel material there is no the excessive room for maneuver,
It is generally closed so being had become in automobile industry instead of original steel material using new high intensity aluminium, magnesium and other light alloy materials
The focus of note.Aluminium alloy has the characteristics that easy processing, conductibility are strong, proportion is small, specific strength is high, appearance is good, and aluminium closes
Steel are recovered more easily in metallographic.The weight that body of a motor car can be mitigated by using aluminum alloy materials, is made on body of a motor car
Car body weight 30%~40% can be reduced with aluminum alloy materials, further using aluminum alloy materials can be with loss of weight up to 50%.Cause
This, aluminium alloy is a kind of optimal light weight material in automobile.Due to the promotion of formation of parts complexity, traditional cold punching is pressed into
Shape technology can not overcome the problems such as rebound, dimensional accuracy and rupture that alloy plate material shapes.Hot forming can utilize higher temperature
The lower good plasticity of aluminium alloy produces complex component, and high intensity is realized by means such as solution hardening and ageing strengthenings
And rebound is reduced simultaneously, ensure dimensional accuracy, avoids rupturing.
Aluminum alloy heat, which shapes indispensable step, forming, solution hardening and timeliness.It is general to adopt in existing technology more
Aluminium alloy is heated with air furnace, since aluminium alloy is reflective (absorptivity is low), generally requires 10-15 points in this case
The heating time of clock can just enable aluminum alloy to reach required solid solubility temperature, and punching press is then carried out after certain soaking time quenches
Fire etc..Process lasts 10-50 minutes under normal circumstances, extremely low efficiency significantly limit the hot formed industry of aluminium alloy
Change.And since temperature is low during artificial aging, the efficiency of heating surface is lower, which generally calculates by the hour, which also limits
The hot formed industrial mass application of aluminium alloy.In addition to this, in aluminum alloy heat forming process in order to avoid occur rupture and
The problems such as plucking, it usually needs use fire-resistant lubricants, and be mainly coated on mold.
Have in the prior art and aluminium alloy is heated using fluidized bed furnace, but its effect is relatively simple.Canadian sliding rail
Lu great Xue uses the coating substance comprising boron nitride, and for improving, heating speed at patch plate is slow to ask on high-strength steel patch plate
Topic not yet finds to be applied in aluminium alloy.The substance for containing boron nitride as high-temperature lubricant be used successfully to it is relevant
Some industries, but it is mainly coated on mold and realizes lubrication.Graphite is also a kind of fire-resistant lubricants, but such as boron nitride one
Sample is typically coated with and realizes lubrication on mold, and has not been used on aluminium alloy to shorten solution time.
Patent document CN101638761A discloses a kind of non-isothermal technique to realize aluminium alloy accelerated solution treatment process,
This method includes the temperature established in processing container, which is higher than the soaking temperature of the alloy but is less than its liquidus curve temperature
Degree quickly heats the alloy to the soaking temperature in the first heating operation, reduces the temperature in the processing container
Then degree heats the alloy to more than described in the second heating operation to the soaking temperature by the way that temperature is gradually increased
The temperature of soaking temperature.This method cocoa is completed with the solution time enabled aluminum alloy in three minutes, but is needed according to specially
The computational methods that profit provides formulate technique, cumbersome, in addition, this method also needs to two heating devices, capacity usage ratio
It is low.
Invention content
For the disadvantages described above or Improvement requirement of the prior art, the present invention provide a kind of raising aluminum alloy heat forming efficiency and
The method of formability, this method increase to the absorptivity of heating furnace radiation absorption using aluminum alloy blank surface after coating coating
The principle for adding and promoting the efficiency of heating surface of aluminium alloy promotes the solid solution speed and artificial aging speed of aluminum alloy blank, shortens profit
The time that Aluminium Alloy Solution Treatment and artificial aging are handled with heating furnace, the efficiency of heating surface is improved, energy has been saved, to drop
Low production cost, improving production efficiency.
To achieve the goals above, the present invention provides a kind of method improving aluminum alloy heat forming efficiency and formability, should
Method includes the following steps：
(1) coating with high-absorbility and with lubricating action is coated on aluminum alloy blank surface；
(2) aluminum alloy blank is placed in the first heating furnace for setting specific heating temperature and heats and keeps the temperature；
(3) aluminum alloy blank is transferred to after being taken out in the first heating furnace on shaping dies；
(4) shaping dies is closed under the drive of forcing press makes the aluminum alloy blank forming and pressurize cooling；
(5) it part after cooling will be shaped is placed in the second heating furnace for setting specific heating temperature and heat and keep the temperature, into
It is taken out after row artificial aging, you can aluminum alloy part after being shaped.
Preferably, aluminum alloy blank described in step (1) is heat-treatable strengthened aluminum alloy plate materials or tubing.
Preferably, the absorptivity of coating described in step (1) is 0.3-0.8.
Preferably, the specific heating temperature range of the first heating furnace described in step (2) is 400-600 DEG C.
Preferably, soaking time described in step (2) is 1-10min.
Preferably, transfer time described in step (2) is 1-10s.
Preferably, cooling time described in step (4) is 3-15s.
Preferably, soaking time described in step (4) is 10-60min.
Preferably, the friction coefficient described in step (4) between aluminum alloy blank and mold is less than 0.3.
Preferably, the specific heating temperature range of the second heating furnace described in step (5) is 100-300 DEG C.
In general, through the invention it is contemplated above technical scheme is compared with the prior art, can obtain down and show
Beneficial effect：
(1) present invention greatly increases the absorptivity of heating furnace radiation absorption using aluminum alloy blank surface after coating coating
And the principle for promoting the efficiency of heating surface of aluminium alloy promotes the solid solution speed and artificial aging speed of aluminum alloy blank, shortens utilization
The time that heating furnace handles Aluminium Alloy Solution Treatment and artificial aging, the efficiency of heating surface is improved, energy has been saved, to reduce
Production cost, improving production efficiency.
(2) present invention substantially reduces the frictional force between blank and mold in forming process using coating and promotes forming
Property, solves the problems, such as or eliminates that part is cracking and plucking.
Specific implementation mode
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, is not used to limit
The fixed present invention.In addition, as long as technical characteristic involved in the various embodiments of the present invention described below is each other
Conflict is not constituted to can be combined with each other.
The present invention provides a kind of method improving aluminum alloy heat forming efficiency and formability, includes the following steps：
(1) coating with high-absorbility and with lubricating action is coated on aluminum alloy blank surface.Wherein high-absorbility
And the absorptivity of the coating with lubricating action is 0.3-0.8 (variation with temperature changes), high temperature resistant ranging from 300-600
DEG C, friction coefficient is less than 0.3, such as selects boron nitride, graphite etc., selects the material with above-mentioned performance as coating, can be with
Increasing during heating to the absorption of radiation and accelerates heating speed so that aluminium alloy accelerates solid solution in the first heating furnace,
Accelerate artificial aging in the second heating furnace.The aluminum alloy blank includes heat-treatable strengthened aluminum alloy plate materials or pipe
Material, such as 6061 and 7075.
(2) blank is placed in the first heating furnace for setting specific heating temperature and heats and keep the temperature 1-10min, heating process
In due to when the presence of coating can be than not coating heating speed it is fast and enable aluminum alloy to be more quickly completed solid solution.Wherein, this is specific
Heating temperature range is 400-600 DEG C, this is the solid solubility temperature range of most of heat-treatable strengthened aluminum alloy.
(3) blank on fast transfer to shaping dies, is avoided into transfer time mistake after being taken out in heating furnace in 1-10s
It is long so that aluminium alloy temperature declines and excessive influence after quenching the degree of supersaturation in solute atoms and vacancy in aluminium alloy and reduce artificial
Mechanical property after timeliness.
(4) shaping dies is closed under the drive of forcing press makes blank forming and pressurize cooling 3-15s so that aluminium closes
Golden blank is cooled fast to required temperature while forming so that solute atoms and vacancy have little time to change and form solute original
The supersaturation of son and vacancy forms precipitation strength for subsequent artefacts' timeliness and lays the groundwork.
(5) it part after cooling will be shaped is placed in the second heating furnace for setting specific heating temperature and heat and keep the temperature 10-
60min takes out after carrying out artificial aging.The specific heating temperature range is 100-300 DEG C, this is most of heat-treatable strengthened
Artificial aging temperature's range of aluminium alloy.
It is a kind of preferred embodiment for the method improving aluminum alloy heat forming efficiency and formability of the present invention below comprising
Following steps：
Step (1)：It is applied on the alloy plate material surface and is covered with the boron nitride coating that thickness is about 50 μm (main component is nitrogen
Change boron), wherein the absorptivity of the coating is in 0.6-0.8 (variation with temperature and change), the operating temperature in aoxidizing atmosphere
The upper limit is 1200 DEG C, and friction coefficient is about 0.2.As a comparison, another piece of uncoated coating of blank.
Step (2)：Above-mentioned blank is placed in the first heating furnace that set temperature is 560 DEG C and heats and keeps the temperature 5min.
Step (3)：By blank after being taken out in heating furnace in 10s on fast transfer to shaping dies.
Step (4)：The shaping dies is closed under the drive of forcing press makes blank forming and pressurize cooling 10s.
Step (5)：Part after cooling will be shaped and be placed in set temperature to heat and keeping the temperature in 200 DEG C of the second heating furnace
15min takes out after carrying out artificial aging.
It is final use the mechanical performance index that measures for：The T6 state hardness of the supply of material is 112.3HV10, coats the part of coating
Hardness is 123.6HV10, belongs to more stable T6 states, and mechanical property has reached requirement, the zero of uncoated coating
The hardness of part is 100.9HV10, and mechanical property just can apply to actual production life less than stable T6 states after needing reprocessing
In；The part for coating coating simultaneously is asked due to having obtained good lubrication without cracking and plucking in forming process
Topic, and the part of uncoated coating occurs tearing in forming process and plucking.
In the inventive solutions, the absorptivity of the more excellent coating of effect is given in embodiment, but the present invention is not
It is limited to provide the absorptivity of coating in above-described embodiment, the absorptivity of the coating is 0.3-0.8, can be in Example
0.6-0.8 can also take 0.3-0.5,0.4-0.6,0.5-0.7 etc., the absorptivity of specific coating to determine according to actual needs.
Claims (8)
1. a kind of method improving aluminum alloy heat forming efficiency and formability, which is characterized in that this method comprises the following steps：
(1) coating with high-absorbility and with lubricating action is coated on aluminum alloy blank surface；
(2) aluminum alloy blank is placed in the first heating furnace for setting specific heating temperature and heats and keeps the temperature；
(3) aluminum alloy blank is transferred to after being taken out in the first heating furnace on shaping dies；
(4) shaping dies is closed under the drive of forcing press makes the aluminum alloy blank forming and pressurize cooling；
(5) it part after cooling will be shaped is placed in the second heating furnace for setting specific heating temperature and heat and keep the temperature, into pedestrian
It is taken out to get to aluminum alloy part after forming after working hour effect；
Aluminum alloy blank described in step (1) is heat-treatable strengthened aluminum alloy plate materials or tubing；
The absorptivity of coating described in step (1) is 0.6-0.8.
2. a kind of method improving aluminum alloy heat forming efficiency and formability according to claim 1, which is characterized in that step
Suddenly the specific heating temperature range of the first heating furnace described in (2) is 400-600 DEG C.
3. a kind of method improving aluminum alloy heat forming efficiency and formability according to claim 1, which is characterized in that step
Suddenly soaking time described in (2) is 1-10min.
4. a kind of method improving aluminum alloy heat forming efficiency and formability according to claim 1, which is characterized in that step
Suddenly transfer time described in (3) is 1-10s.
5. a kind of method improving aluminum alloy heat forming efficiency and formability according to claim 1, which is characterized in that step
Suddenly cooling time described in (4) is 3-15s.
6. a kind of method improving aluminum alloy heat forming efficiency and formability according to claim 1, which is characterized in that step
Suddenly soaking time described in (5) is 10-60min.
7. a kind of method improving aluminum alloy heat forming efficiency and formability according to claim 1, which is characterized in that step
Suddenly the friction coefficient described in (4) between aluminum alloy blank and mold is less than 0.3.
8. a kind of method improving aluminum alloy heat forming efficiency and formability according to claim 1, which is characterized in that step
Suddenly the specific heating temperature range of the second heating furnace described in (5) is 100-300 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611164090.3A CN106676438B (en) | 2016-12-16 | 2016-12-16 | A method of improving aluminum alloy heat forming efficiency and formability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611164090.3A CN106676438B (en) | 2016-12-16 | 2016-12-16 | A method of improving aluminum alloy heat forming efficiency and formability |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106676438A CN106676438A (en) | 2017-05-17 |
| CN106676438B true CN106676438B (en) | 2018-10-16 |
Family
ID=58868253
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611164090.3A Active CN106676438B (en) | 2016-12-16 | 2016-12-16 | A method of improving aluminum alloy heat forming efficiency and formability |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106676438B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107686954A (en) * | 2017-07-18 | 2018-02-13 | 北京科技大学 | A kind of heat treatment method for improving 7075 aluminum alloy heat press formabilities |
| CN109013105B (en) * | 2018-08-31 | 2023-04-21 | 苏州普热斯勒先进成型技术有限公司 | Automatic spraying line and thermoforming production line |
| CN112742938A (en) * | 2019-10-31 | 2021-05-04 | 中铝瑞闽股份有限公司 | Hot stamping forming method for 5-series aluminum alloy for automobile |
| CN115365361A (en) * | 2022-09-16 | 2022-11-22 | 吉林大学 | 7075-T6 aluminum alloy contact heating forming method |
| CN115945571A (en) * | 2023-01-18 | 2023-04-11 | 上海新顿长菁科技有限公司 | Hot forming process of 6XXX series aluminum alloy, parts made by hot forming process and application of hot forming process |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102534447A (en) * | 2012-01-19 | 2012-07-04 | 河海大学 | Combination processing method for improving memory stability of Cu-Al series shape memory alloy |
| CN105112824A (en) * | 2015-08-22 | 2015-12-02 | 慈溪市龙山汽配有限公司 | Method for preparing vehicle guide rail |
| CN106164184A (en) * | 2014-03-31 | 2016-11-23 | 安赛乐米塔尔公司 | Produce the method for the repressed steel part hardening and coating with high production rate |
-
2016
- 2016-12-16 CN CN201611164090.3A patent/CN106676438B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102534447A (en) * | 2012-01-19 | 2012-07-04 | 河海大学 | Combination processing method for improving memory stability of Cu-Al series shape memory alloy |
| CN106164184A (en) * | 2014-03-31 | 2016-11-23 | 安赛乐米塔尔公司 | Produce the method for the repressed steel part hardening and coating with high production rate |
| CN105112824A (en) * | 2015-08-22 | 2015-12-02 | 慈溪市龙山汽配有限公司 | Method for preparing vehicle guide rail |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106676438A (en) | 2017-05-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106676438B (en) | A method of improving aluminum alloy heat forming efficiency and formability | |
| CN108380722A (en) | A kind of hot press-formed method of lightweight car body of aluminum alloy component | |
| CN107904440B (en) | High-temperature titanium alloy material and preparation method thereof | |
| JP6802187B2 (en) | Impact heat treatment of aluminum alloy articles | |
| CN109226622A (en) | A kind of TA15 titanium alloy forging forging forming method with high-intensity and high-tenacity | |
| WO2015131522A1 (en) | Aluminum alloy hub manufacturing method | |
| CN106583489A (en) | Regression and formation integrated technology of high-strength aluminum alloy plate | |
| JP2015016508A (en) | Hot press forming method of plated steel and hot press formed article using the same | |
| CN103667840B (en) | A kind of nano-particle reinforcement multicomponent heat-resistant magnesium alloy and preparation method thereof | |
| CN103710600B (en) | A kind of boron nitride strengthens multicomponent heat-resistant magnesium alloy and preparation method thereof | |
| CN103667839B (en) | A kind of nano-particle reinforcement creep resistance Dow metal and preparation method thereof | |
| CN104073701B (en) | A kind of enhancing magnesium alloy and preparation method thereof | |
| CN101880844A (en) | Heat treatment process for ZL101A aluminium alloy for automobile wheel hub | |
| CN102352474A (en) | Forging and heat treatment method of 2A50 aluminium alloy die forging | |
| CN102296257B (en) | Preparation method of nano crystalline state polycrystal magnesium material | |
| CN109136628A (en) | A kind of hot rolling technology of 6xxx aluminium alloy | |
| CN107502842A (en) | A kind of 6 systems and the supper-fast solid solution treatment method of 7 line aluminium alloys | |
| CN108405773A (en) | A kind of lightweight aluminum alloy chassis part processing method | |
| CN109048233A (en) | A kind of aluminium alloy wheel hub manufacturing method | |
| CN106906435A (en) | A kind of efficient preparation technology of Aluminum alloy for automotive body sheet material | |
| CN110088313A (en) | Alpha and beta titanium alloy squeezes out profile | |
| WO2015188543A1 (en) | Method for manufacturing high-magnesium aluminum alloy commercial wheel hub | |
| CN104099506A (en) | Multicomponent heat-resistant magnesium alloy and production method thereof | |
| CN109385510A (en) | A kind of Cr-Ni-Mo crack-sensitivity steel major diameter forging circle casting skin hardening and tempering process | |
| CN105316574A (en) | Work hardenable yield ratio-controlled steel and method of manufacturing the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |