CN100584986C - Method of heat treating an aluminium alloy member and apparatus therefor - Google Patents
Method of heat treating an aluminium alloy member and apparatus therefor Download PDFInfo
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- CN100584986C CN100584986C CN200580033964A CN200580033964A CN100584986C CN 100584986 C CN100584986 C CN 100584986C CN 200580033964 A CN200580033964 A CN 200580033964A CN 200580033964 A CN200580033964 A CN 200580033964A CN 100584986 C CN100584986 C CN 100584986C
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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
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- 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
- C21D1/34—Methods of heating
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Abstract
The present invention relates to a method of heat treating an aluminum alloy member (1) having a main surface, including the steps of (a) subjecting the member (1) to a solution heat treatment (b) quenching the member and (c) reheating the member in a pre-ageing heat treatment step. The pre-ageing heat treatment is conducted by holding the aluminum alloy member (1) close to a heating plate (12). The invention is also directed to a product produced according to this method, and to an apparatus for performing the pre-ageing heat treatment.
Description
Technical field
The present invention relates to a kind of heat treating method of aluminium alloy element, comprise the preageing heat treatment step, and relate to the equipment that is used for this method.
Background technology
Be used in by the aluminium alloy element of heat treatable aluminium alloy manufacturing and relate in relative high strength, high tenacity and the corrosion proof multiple application, in using as aircraft fuselage, automobile-used member and other.
In order to make aluminium alloy element, for example, sheet material or plate, aluminium alloy or direct chill casting are ingot casting, perhaps continuous casting is thick ribbon form, then with its hot rolling and/or cold rolling one-tenth desired thickness.Aluminium alloy element experiences solution heat treatment then.Solution heat treatment relates to the extremely suitable high temperature (as 450-580 ℃) of METAL HEATING PROCESS, thereby all soluble alloy compositions are dissolved in the sosoloid, and described alloy compositions is separated out from mother metal in hot rolling and/or cold-rolled process.For these components are remained in the soluble solids, metal is rapidly quenched to envrionment temperature, to produce supersaturated solid solution.Usually, pass through metal then in room temperature, perhaps remain on higher temperature and come acceleration effect, keep for some time to make ageing of metal sclerosis or precipitation hardening, thereby make the spontaneous formation of tiny precipitate by the diffusion of atom in supersaturated solid solution, they form small druse or " district " thus.
Also know, also can by make aluminium alloy element after quenching once more thermal treatment further improve the characteristic of aluminium alloy element.In this so-called " preageing " heat treatment process, some atoms in the supersaturated solid solution come out from crystalline network, and form small druse and form used crystal seed.This plays the effect that makes the microstructure stabilization.
US-3135633 has disclosed this preageing or " stabilization " thermal treatment, to improve the mechanical characteristics of Aludur.In this technology, forged alloy product is moved through first stove continuously, so that relevant alloying element enters sosoloid, move it by quenching chamber then, and enter second stove, handle with the preageing that stands stabilization.Wherein mention, the timed interval between quenching and the preageing should be less than 10 minutes.In order to allow rapidly alloy is heated up, after quenching, begin several minutes after, heat second stove by forced hot air circulation.
In EP-0805879-B1, also narrated preageing thermal treatment.In the method that discloses, metal is heated directly to 100 to 300 ℃ of peak temperatures in the scope, preferably in 130 to 270 ℃ scope, and keeps the very short residence time at this peak temperature, then directly with under its outlet temperature that is cooled to stipulate.Therefore this processing is called temperature " spike " in this area, this is because the temperature that is used for this technology is similar to trilateral, point or blunt a little spike substantially to the graphic representation of time.This processing it is said the ductility that can improve the AA6xxx series alloy at the T4 state, makes baking vanish effect maximum simultaneously.
In EP-0480402-A1, disclosed and related to the heat treated another kind of technology of preageing.This already known processes relates to after solution heat treatment aluminium alloy plate is quenched, allows still to be less than 60 minutes at the room temperature holding plate, and at 50-150 ℃ of holding plate 10-500 minute.
EP-0679199-A1 has also disclosed between quenching after the solution heat treatment and timeliness step preageing or the pre-tempering step at 70 to 150 ℃.
Summary of the invention
The objective of the invention is further to improve the heat treating method of aluminium alloy element, so that improve the characteristic of the finished product.
Another object of the present invention is to simplify the required equipment of thermal treatment of carrying out, and this thermal treatment particularly solution heat treatment preageing is afterwards handled.
The invention solves one or more above-mentioned purposes.In this specification sheets, narrate and describe in detail preferred embodiment.
As described below, in addition to another pointed out, all alloy nomenclatures and Status Name reference publish " the ABAL's title in aluminium standard, data and registration record " by ABAL.
According to one aspect of the present invention, a kind of heat treating method to aluminium alloy element with major surfaces is provided, it is as follows successively that the method comprising the steps of: a) aluminium alloy element is carried out solution heat treatment, b) preferably by jet quenching or be immersed in water or other quenchants in immerseable quench, aluminium alloy element is quenched, and c) in the preageing heat treatment step to the aluminium alloy element reheat after quenching, and be attached on the major surfaces of hot-plate by the major surfaces with aluminium alloy element thus, carry out preageing thermal treatment.
The present invention is based on following understanding, that is, if carry out preageing thermal treatment after the quenching step when the solution heat treatment of aluminium alloy element finishes, this preageing thermal treatment is effective especially, with the more stable microtexture of acquisition aluminium alloy element, and need not carry out the natural aging sclerosis of essence.More preferably, preageing thermal treatment is carried out in hour of quenching step, and time lag is reduced to about several minutes usually even may is several seconds.For this reason, carry out thermal treatment and will can not produce desired result in stove, this is because aluminium alloy element must be moved in the stove, and will need for some time to reach temperature required.Therefore the present invention proposes not use stove to come preageing to handle the method for aluminium alloy element, carries out in the outside of any stove because preageing is handled.Replace stove, aluminium alloy element is held near hot-plate or is attached to hot-plate, and is promptly heated thus, thereby realizes the preageing processing.Can reach the maximum prefetch aging temp in several minutes, this is because heat passes to aluminium alloy element from hot-plate.Hot-plate preferably had been heated to temperature required before the preageing step.
The aluminium alloy element of carrying out this method is rolled products preferably, normally thickness thin plate or the sheet of 15mm at the most, and preferred thickness 1.5 in the scope of 6mm.
This method can be used for handling heat treatable aluminium alloy, particularly the aluminium alloy of those AA6xxx, AA2xxx or AA7xxx series.Most preferred, aluminium alloy element is selected from the group of being made up of AA6013, AA6056, AA6011, AA6016, AA2024, AA2524, AA2219, AA7074, AA7075, AA7050 and AA7055.
Hot-plate is also preferably made by aluminium alloy, and its thermal capacity is big, and fusing point is higher than heat treated aluminium alloy element.Especially, can use the aluminium alloy of AA5xxx series as AA5026 and AA3xxx series.In this embodiment, the thickness of hot-plate is the thickness of aluminium alloy element at least.The thickness that those skilled in the art can optimize hot-plate according to the thickness of aluminium alloy element and required preageing treatment temp and time.
In another embodiment, hot-plate is formed from steel.
Several modes that heated hot-plate before the preageing step are arranged.In one embodiment, hot-plate and aluminium alloy element place the stove that is used for solution heat treatment together.This method has the advantage that does not need extra equipment and time to heat hot-plate.Preferably, aluminium alloy element and hot-plate all keep approximate horizontal, aluminium alloy element are placed on the hot-plate simply before in entering the used stove of solution heat treatment.
Preferably, in these three steps of solution heat treatment, quenching and preageing, the major surfaces that keeps hot-plate and aluminium alloy element mutually near.This just means, can be by only spraying or cooling comes quench member from a side.Yet the advantage of doing like this is, by from the heat flow of unhardened hot-plate to aluminium alloy element, this aluminium alloy element will be reheated after having finished immediately quenching, to realize the preageing processing.
Replacedly, aluminium sheet can quench in both sides, and it can place on the hot-plate, handles to realize required preageing.
Replacedly, hot-plate can place the used stove of solution heat treatment before the solution heat treatment aluminium alloy element.In case it is heated, in the solution heat treatment and quenching process of aluminium alloy element, hot-plate can remain near the quenching device.Because the top temperature that preageing is handled is usually less than the temperature of solution heat treatment, even advantageously make hot-plate before receiving aluminium alloy element, cool off.After quenching, on the preferred referred hot-plate of aluminium alloy element.
Another replaceable scheme relates to uses the electrically heated hot-plate, for example, and by means of the heater coil that places hot-plate inside.In this embodiment, preferably before carrying out preageing thermal treatment, hot-plate is heated to required preageing temperature.
Be used for ways customary that major surfaces with aluminium alloy element remains close to the major surfaces of hot-plate and be with one on another horizontal positioned.Yet aluminium alloy element and the hot-plate vertically layout of alignment are not got rid of from protection domain yet.
For the surface of protecting aluminium alloy element and guarantee little gap between hot-plate and aluminium alloy element, between each aluminium alloy element and each hot-plate, protective layer is set, so that they are attached to together.The preferred thick 5mm that reaches of this layer, the about 2mm of thickness usually, and make by the cloth or the net of lagging material, described lagging material for example is glass fabric, pottery, glass wool, mineral wool, perhaps for lesser temps, adopts polymer fabrics.The use of protective layer also causes the reheat of aluminium alloy element that short time lag is arranged, and this just causes in hardening step, allows that aluminium alloy element was cooled fast to below 100 ℃ be heated with the thermal treatment of realization preageing from hot-plate before.
Also can use more than a hot-plate.In a preferred embodiment, aluminium alloy element in the preageing step retaining clip between two hot-plates.This layout plays the effect of this aluminium alloy element of aligning, does not therefore just need further smoothing or stretched operation.
According to alternative embodiment, by two aluminium alloy elements being kept the two opposite sides near a hot-plate, these two aluminium alloy elements of thermal treatment simultaneously.
Can carry out according to preageing of the present invention and handle making by means of artificial aging before aluminium alloy element reaches final state.Common final state is from by the state of selecting the group that comprises T6, T79, T78, T77, T74, T73 and T8.By way of example, suitable T73 state will be the T7351 state, and suitable T74 state will be the T7451 state.
In one embodiment, after preageing is handled and finally before the ageing treatment, aluminium alloy element selectively stretches or compresses or other cold working, thereby eliminates stress or improve mechanical characteristics, for example, sheet or light sheet products is smoothed.Preferably, stretched operation comprises and is no more than 8% of length before the stretched operation, preferably in the scope of 1-5%.Especially, the aluminium alloy element of AA6xxx and AA2xxx series alloy also can be subjected to cold rolling manipulation, and cold rolling attenuate amount is in up to 20% scope, thus the mechanical characteristics that improvement can get in final as-heat-treated condition.
In yet another aspect, the present invention relates to a kind of according to product that method of the present invention obtained.These the finished product for example can be used for the shell of airframe.
The present invention provides a kind of equipment of heat-treatable aluminum alloy member in yet another aspect, it comprises: a) solution heat treatment furnace, b) quench station, c) hot-plate, it is used for being attached to by the major surfaces with aluminium alloy element the major surfaces of hot-plate, this aluminium alloy element of reheat in the preageing heat treatment step.The advantage of this equipment is that it does not need second used stove of preageing thermal treatment.
Description of drawings
Will be from below with reference to becoming clearer the detailed description of accompanying drawing to preferred embodiment according to the above-mentioned of heat treating method of the present invention and other feature and advantage, wherein,
Fig. 1 is the synoptic diagram according to the Equipment for Heating Processing of prior art;
Fig. 2 is to use the synoptic diagram according to the Equipment for Heating Processing of the method for the first embodiment of the present invention;
Fig. 3 is the temperature-time diagram according to the method for first embodiment;
Fig. 4 is the viewgraph of cross-section according to the layout of the aluminium alloy element of first embodiment and hot-plate;
Fig. 5 is the viewgraph of cross-section according to the layout of two aluminium alloy elements of second embodiment and a hot-plate;
Fig. 6 is to use the synoptic diagram according to the Equipment for Heating Processing of the method for the third embodiment of the present invention;
Fig. 7 is the viewgraph of cross-section that the aluminium alloy element/hot-plate according to another embodiment is arranged.
Embodiment
Fig. 1 illustrates the prior art equipment that is used for heat-treatable aluminum alloy member 1.Aluminium alloy element 1 from milling train carries out solution heat treatment in successive horizontal chamber oven 4.Aluminium alloy element 1 is carried on roller 6 and is passed through stove.After solution heat treatment, by nozzle 8a, 8b aluminium alloy element 1 is quenched, wherein, described nozzle 8a, 8b are ejected into water coolant on the upper and lower surface of aluminium alloy element.In order aluminium alloy element 1 to be carried out reheat carrying out preageing thermal treatment, another horizontal chamber oven 10 is set at an end of production line.Therefore, the method for prior art needs two stoves.Preageing stove 10 must have the forced hot air circulation device especially, to guarantee quick reheat aluminium alloy element 1.
Execution according to the equipment of the method for the first embodiment of the present invention as shown in Figure 2.In horizontal chamber oven 4, the plate 1 from milling train is heat-treated once more.Yet this plate 1 places in treating processes on the hot-plate 12.After solution heat treatment, aluminium alloy element 1 still on hot-plate, is accepted quench treatment simultaneously.Therefore, have only upper nozzle 8a to be used for quench member 1.On roller 6, continue the assembly of transfer member/plate then.Because hot-plate 12 and aluminium alloy element 1 is same thick or thicker than aluminium alloy element 1, and make, so hot-plate 12 after stopping, quenching carries out reheat to aluminium alloy element 1 immediately by thermal capacity height, material that thermal conductivity is good.The top temperature that heating rate and aluminium alloy element are reached depends on thickness and thickness component for and the component of hot-plate 12 with respect to aluminium alloy element 1.Preferably, about 40mm is thick for hot-plate, and is promptly thick than aluminium alloy element 1, and preferably made by the aluminium alloy of AA5xxx or AA3xxx series.
The thetagram of aluminium alloy element 1 as shown in Figure 3.In the solution heat treatment process, aluminium alloy element 1 is heated to first temperature T
1, this temperature T
1Between 450 ℃ and 580 ℃, be typically about 530 ℃.Road as known in the art, metal is kept this temperature for some time.In quenching process, metal is cooled to 100 ℃ or lower rapidly, preferably is cooled to room temperature RT.By subsequently aluminium alloy element being placed on the hot-plate 12, as shown in Figure 2, this aluminium alloy element will be reheated the preageing temperature T immediately
2, T
2Scope in 100 ℃ to 250 ℃ scope, preferably in 150 ℃ to 250 ℃ scope.This aluminium alloy element will reach T in several minutes
2And preferably remain on one acquisition expection preageing required period of effect of this temperature, the described hold-time in up to 30 minutes scope, is preferably 10 to 20 minutes usually.The alloy compositions that preageing temperature of selecting and hold-time will be depended on aluminium alloy element.By aluminium alloy element is taken off from hot-plate, finish preageing and handle.Then by means of water-cooled, air blast cooling or by for example staying conventional air cooling on the roller platform, aluminium alloy element is cooled to envrionment temperature.Have been found that the speed of cooling after preageing is handled is very not crucial.
Most preferably,, in one or two minute, preferably in 0 to 20 second, begin reheat, to obtain the preageing effect after solution heat treatment is quenched.Rate of heating preferably in the scope of 10 to 50 ℃/min, therefore, will be in 1 to 10 minute, preferred 5 minutes, reach final preageing temperature.
Fig. 4 illustrates the enlarged cross-sectional view of member/plate arrangement.Protective layer 14 is set between member and plate, thereby with aluminium alloy element 1 with hot-plate 12 is spaced from each other and provide thermofin between aluminium alloy element 1 and hot-plate 12.Preferably, protective layer 14 approximately is that 2mm is thick, and by making as the barrier fabric of glass fabric, glass wool, mineral wool or polymer fabrics and so on.Yet, also can use the spacer of any other material or any other suitable pattern.Although do not illustrate in Fig. 5 to 7, in each example, protective layer can be located between each aluminium alloy element 1 and each hot-plate 12.
According to second embodiment, hot-plate 12 will be clipped between two aluminium alloy elements 1,1 ', as shown in Figure 5.The layout of Fig. 5 allows that simultaneously two aluminium alloy elements 1,1 ' being carried out preageing handles.Hot-plate 12 must be enough thick, is used for enough heats to two aluminium alloy element reheat with storage, thereby realize that required preageing handles.
Preceding two embodiment are applicable to continuous heat treatment, wherein, in solution heat treatment, quenching and preageing step, keep (a plurality of) hot-plate adjacent with (a plurality of) aluminium alloy element.
Yet in some applications, it is favourable heating hot-plate 12 before the heating aluminium alloy element 1.This layout as shown in Figure 6.Here, in horizontal chamber oven 4,, be placed on then on one side heating hot-plate 12 before the solution heat treatment of aluminium alloy element 1.After quenching, aluminium alloy element 1 is mentioned on the hot-plate 12.The advantage of this embodiment is that hot-plate 12 had been cooled to the low preageing temperature in the 100-250 ℃ of scope before receiving aluminium alloy element 1.Replacedly, aluminium alloy element 1 can be supplied with before heating hot-plate 12 and pass through solution heat treatment furnace.Embodiment shown in Figure 6 allows that also use for example is provided with the hot-plate of heating certainly 12 of wire loop, and it does not need at the stove internal heating.
In another embodiment shown in Figure 7, two hot-plates 12,12 ' of heating before the preageing step, and a hot-plate 12 ' will place on the aluminium alloy element 1.This will align aluminium alloy element 1, therefore, and just further stretch forming.
After aluminium alloy element is cooled to envrionment temperature, aluminium alloy element will stand further ageing treatment, and with the material of production age hardening, this material has the desired characteristic that is used for its application.
Claims (31)
1, a kind of aluminium alloy element (1) heat-treating methods to having major surfaces comprises step:
(a) aluminium alloy element (1) is carried out solution heat treatment,
(b) aluminium alloy element (1) is quenched,
(c) in the preageing heat treatment step, the aluminium alloy element (1) after reheat quenches,
And wherein, be attached to by major surfaces and under the situation of not using stove, carry out preageing thermal treatment on the major surfaces of hot-plate (12), thereby replaced stove with this hot-plate (12) with aluminium alloy element (1).
2, the method for claim 1 is characterized in that, in the preageing heat treatment process, aluminium alloy element (1) and (12) one of hot-plates is roughly kept level on another.
3, the method for claim 1 is characterized in that, aluminium alloy element (1) and hot-plate (12) interconnect to (c) step at all (a).
4, the method for claim 1 is characterized in that, hot-plate (12) before the preageing step and/or in the process by electrically heated.
5, the method for claim 1 is characterized in that, by hot-plate (12) is placed the used stove of solution heat treatment (4), is heated before the preageing step.
6, as claim 4 or 5 described methods, it is characterized in that, after the quenching step, aluminium alloy element (1) is risen on the hot-plate (12).
7, the method for claim 1 is characterized in that, by between aluminium alloy element (1) and hot-plate (12) protective layer being set, aluminium alloy element (1) and hot-plate (12) is interconnected.
8, method as claimed in claim 7 is characterized in that, protective layer is made by lagging material, and this lagging material is selected from the group of being made up of glass fabric, pottery, glass wool, mineral wool and polymer fabrics.
9, method as claimed in claim 7 is characterized in that, protective layer thickness reaches 5mm.
10, the method for claim 1 is characterized in that, aluminium alloy element (1) in the preageing step retaining clip between two hot-plates (12,12 ').
11, the method for claim 1 is characterized in that, in the preageing step, one of them major surfaces of second aluminium alloy element (1 ') connects with it near the second major surfaces ground of hot-plate (12).
12, the method for claim 1 is characterized in that, aluminium alloy element (1) is a rolled products.
13, method as claimed in claim 12 is characterized in that, the thickness of this rolled products is at most 15mm.
14, the method for claim 1 is characterized in that, aluminium alloy element (1) is made up of the heat treatable aluminium alloy of AA2xxx, AA6xxx or AA7xxx series.
15, the method for claim 1, it is characterized in that aluminium alloy element (1) is made of the heat treatable aluminium alloy of selecting from the group of being made of AA2024, AA2524, AA2219, AA6013, AA6056, AA6011, AA6016, AA7074, AA7075, AA7055 and AA7050.
16, the method for claim 1 is characterized in that, aluminium alloy element (1) is used for the shell of airframe.
17, the method for claim 1 is characterized in that, hot-plate (12) is the same with aluminium alloy element at least thick.
18, the method for claim 1 is characterized in that, hot-plate (12) has bigger thermal capacity and the fusing point of Geng Gao with respect to aluminium alloy element (1).
19, the method for claim 1 is characterized in that, hot-plate (12) is made by the material of selecting from the group of the aluminium alloy that comprises AA3xxx, AA5xxx series and steel.
20, the method for claim 1 is characterized in that, begins step (c) in two minutes after solution heat treatment is quenched.
21, the method for claim 1 is characterized in that, begins step (c) in 20 seconds after solution heat treatment is quenched.
22, the method for claim 1 is characterized in that, after quenching, at 1 to 10 minute or still less reach the heat treated top temperature of preageing in the time.
23, the method for claim 1 is characterized in that, carries out preageing and handle in 100-250 ℃ temperature range.
24, the method for claim 1 is characterized in that, carries out preageing and handle in 150-250 ℃ temperature range.
25, the method for claim 1 is characterized in that, in preageing heat treatment step (c), aluminium alloy element is remained on the preageing temperature reach 30 minutes hold-time.
26, the method for claim 1, also comprise the aluminium alloy element that passes through preageing heat treatment step (c) is carried out the step of artificial aging to final state, wherein, final state is selected from the group that T6, T79, T78, T77, T74, T73 and T8 form.
27, the method for claim 1 also comprises from stretching, compress and smoothing the group of forming being chosen in the step that preageing heat treatment step (c) is carried out afterwards.
28, method as claimed in claim 27, wherein, from stretching, compress and smoothing this step of selecting the group of forming and to final state, carry out in the artificial aging of aluminium alloy element.
29, the method for claim 1 comprises that also stretched operation is no more than 8%, and described stretched operation is carried out afterwards at preageing heat treatment step (c).
30, the method for claim 1, the preageing heat treatment step (c) that also is included in aluminium alloy element afterwards and with its artificial aging to the final state, to its cold rolling step, cold rolling attenuate amount is in up to 20% scope.
31, a kind of according to the described method of one of claim 1-30 to the heat treated equipment of aluminium alloy element (1), comprising:
A) solution heat treatment furnace (4),
B) quench station (8a, 8b),
C) hot-plate (12), its major surfaces by keeping aluminium alloy element (1) be near the major surfaces of hot-plate (12), in the preageing heat treatment step to aluminium alloy element (1) reheat.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP04077719.5 | 2004-10-05 | ||
| EP04077719 | 2004-10-05 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101061247A CN101061247A (en) | 2007-10-24 |
| CN100584986C true CN100584986C (en) | 2010-01-27 |
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| CN200580033964A Expired - Fee Related CN100584986C (en) | 2004-10-05 | 2005-09-30 | Method of heat treating an aluminium alloy member and apparatus therefor |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP1797210A1 (en) |
| CN (1) | CN100584986C (en) |
| DE (1) | DE102005045340B4 (en) |
| FR (1) | FR2878258B1 (en) |
| RU (1) | RU2388843C2 (en) |
| WO (1) | WO2006037588A1 (en) |
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| CN110952011B (en) * | 2019-11-22 | 2021-01-05 | 天津忠旺铝业有限公司 | 2-series high-damage-tolerance aluminum alloy plate and preparation method thereof |
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| CN113512632B (en) * | 2021-06-15 | 2022-04-26 | 湖南有色金属职业技术学院 | Aluminum alloy heat treatment device based on metal material |
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- 2005-09-30 EP EP05794460A patent/EP1797210A1/en not_active Withdrawn
- 2005-09-30 RU RU2007116978/02A patent/RU2388843C2/en not_active IP Right Cessation
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| CN109716860B (en) * | 2016-09-27 | 2021-09-24 | 诺维尔里斯公司 | Compact continuous annealing solution heat treatment |
| US11242586B2 (en) | 2016-09-27 | 2022-02-08 | Novelis Inc. | Systems and methods for threading a hot coil on a mill |
| US11377721B2 (en) | 2016-09-27 | 2022-07-05 | Novelis Inc. | Systems and methods for threading a hot coil on a mill |
| US11479837B2 (en) | 2016-09-27 | 2022-10-25 | Novelis Inc. | Pre-ageing systems and methods using magnetic heating |
| US11499213B2 (en) | 2016-09-27 | 2022-11-15 | Novelis Inc. | Systems and methods for threading a hot coil on a mill |
| US11821066B2 (en) | 2016-09-27 | 2023-11-21 | Novelis Inc. | Systems and methods for non-contact tensioning of a metal strip |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101061247A (en) | 2007-10-24 |
| DE102005045340B4 (en) | 2010-08-26 |
| RU2007116978A (en) | 2008-11-20 |
| WO2006037588A1 (en) | 2006-04-13 |
| DE102005045340A1 (en) | 2006-04-06 |
| FR2878258B1 (en) | 2008-05-16 |
| FR2878258A1 (en) | 2006-05-26 |
| RU2388843C2 (en) | 2010-05-10 |
| EP1797210A1 (en) | 2007-06-20 |
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