CN115156287B - Rolling extrusion composite-creep aging forming manufacturing method for high-performance aluminum alloy ribbed wallboard - Google Patents
Rolling extrusion composite-creep aging forming manufacturing method for high-performance aluminum alloy ribbed wallboard Download PDFInfo
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- CN115156287B CN115156287B CN202210795636.4A CN202210795636A CN115156287B CN 115156287 B CN115156287 B CN 115156287B CN 202210795636 A CN202210795636 A CN 202210795636A CN 115156287 B CN115156287 B CN 115156287B
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- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 58
- 238000005096 rolling process Methods 0.000 title claims abstract description 44
- 230000032683 aging Effects 0.000 title claims abstract description 37
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 31
- 238000001125 extrusion Methods 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 claims abstract description 24
- 238000005097 cold rolling Methods 0.000 claims abstract description 21
- 238000010791 quenching Methods 0.000 claims abstract description 7
- 230000000171 quenching effect Effects 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910001148 Al-Li alloy Inorganic materials 0.000 claims description 6
- JFBZPFYRPYOZCQ-UHFFFAOYSA-N [Li].[Al] Chemical compound [Li].[Al] JFBZPFYRPYOZCQ-UHFFFAOYSA-N 0.000 claims description 6
- 239000001989 lithium alloy Substances 0.000 claims description 6
- 239000000243 solution Substances 0.000 claims description 5
- 239000006104 solid solution Substances 0.000 claims description 4
- 230000035882 stress Effects 0.000 claims description 4
- 238000003754 machining Methods 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 2
- 238000003483 aging Methods 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 6
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 20
- 238000003801 milling Methods 0.000 description 7
- 238000012545 processing Methods 0.000 description 7
- 238000011056 performance test Methods 0.000 description 6
- 238000009864 tensile test Methods 0.000 description 6
- 230000007547 defect Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005098 hot rolling Methods 0.000 description 2
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- WPPDFTBPZNZZRP-UHFFFAOYSA-N aluminum copper Chemical compound [Al].[Cu] WPPDFTBPZNZZRP-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/08—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling structural sections, i.e. work of special cross-section, e.g. angle steel
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
- B21B1/227—Surface roughening or texturing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
- B21B27/02—Shape or construction of rolls
- B21B27/021—Rolls for sheets or strips
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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
-
- 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
- C21D1/56—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering characterised by the quenching agents
- C21D1/60—Aqueous agents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/08—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling structural sections, i.e. work of special cross-section, e.g. angle steel
- B21B2001/081—Roughening or texturing surfaces of structural sections, bars, rounds, wire rods
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Geometry (AREA)
- Metal Rolling (AREA)
Abstract
The invention discloses a high-performance aluminum alloy ribbed wallboard roll extrusion composite-creep age forming manufacturing method, which comprises the following steps: carrying out solution treatment and water quenching on the aluminum alloy to obtain a quenched aluminum alloy plate; rolling the quenched aluminum alloy plate along the original rolling direction at room temperature to obtain a ribbed wallboard; wherein, the rolling is carried out by adopting a cold rolling mill, and the outer circumferential surface of an upper roller of the cold rolling mill is provided with a groove in a ring manner; and placing the ribbed wallboard in a die for creep aging forming treatment to obtain the high-performance integral ribbed wallboard. According to the invention, the upper roller is designed into a roller structure with grooves, then the aluminum alloy subjected to solution quenching is subjected to single-pass or multi-pass cold rolling, the integral aluminum alloy ribbed wallboard with high dislocation density is obtained, and the ribbed wallboard obtained by cold rolling is subjected to creep aging forming treatment, so that the integral forming of the high-performance ribbed wallboard is realized, and the integral forming method has the advantages of high material utilization rate, low energy consumption and great improvement of the comprehensive performance of products.
Description
Technical Field
The invention relates to the technical field of nonferrous metal material processing engineering, in particular to a rolling extrusion composite-creep age forming manufacturing method of a high-performance aluminum alloy ribbed wallboard.
Background
Because of the high-speed development of industrial technology, the requirements on modern high-end manufacturing industry are higher, especially in the field of aerospace, in order to improve the aerodynamic performance and the integrity of an airplane and the high-speed and high-mobility performance, most parts are designed into an integral ribbed structure, and because the aluminum alloy has the advantages of low density, high specific strength, excellent corrosion resistance and easiness in processing and forming, the high-strength aluminum alloy large-sized ribbed wallboard member is more applied to aerospace transportation equipment, and the high-quality preparation technology is one of the prior development technologies for manufacturing the aerospace transportation equipment.
However, the ribbed wallboard member has strict requirements on performance, high requirements on forming precision and a complex structure, so that the ribbed wallboard member is very difficult to manufacture. The prior art of ribbed wallboard is generally manufactured by assembling a skin and longitudinal and transverse reinforcing ribs by riveting, cementing or spot welding, but the rigidity, strength and sealing performance of the assembled wallboard are poor. The integral ribbed wallboard member can well overcome the series of problems, and the integral ribbed wallboard can also reduce the number of parts, bolts, rivets and other fasteners contained in the member, reduce the weight of machine body parts and improve the assembly quality of pneumatic surfaces and shapes. However, the integral forming process of the integral ribbed wallboard still has the following defects:
(1) The thick plate milling manufacturing process has the defects of large machining amount, low material utilization rate and high manufacturing cost, so that the requirements of high-efficiency and rapid manufacturing are difficult to meet;
(2) Extrusion forming has relatively high forming precision, but the production mode also has the defects of high extrusion difficulty and easy instability, and is difficult to process large-sized ribbed wallboard members, so that the application is limited;
(3) The traditional rolling technology has low production cost and simple operation, but most of rolling members are flat plate frameworks with simple structures, and the manufacturing of the members with complex shapes, such as ribbed thin-wall plates, is further explored.
Therefore, a method for forming a high-strength aluminum alloy ribbed wall plate meeting the manufacturing requirements of high performance, low cost and the like is urgently needed, so that excellent formed components can be obtained to be applied to aerospace equipment.
Disclosure of Invention
In view of the defects existing at present, the invention provides a roll extrusion composite-creep aging forming manufacturing method for a high-performance aluminum alloy ribbed wallboard.
In order to achieve the above purpose, the invention provides a method for manufacturing a high-performance aluminum alloy ribbed wallboard by roll extrusion composite-creep age forming, which is characterized by comprising the following steps:
step one: carrying out solution treatment on the aluminum alloy plate, and then carrying out water quenching to obtain a quenched aluminum alloy plate;
step two: rolling the quenched aluminum alloy plate along the original rolling direction at room temperature to obtain a ribbed wallboard; wherein, the rolling is carried out by a cold rolling mill, and the outer circumferential surface of an upper roller of the cold rolling mill is provided with a groove in a ring manner;
Step three: and placing the ribbed wallboard in a die for creep aging forming treatment to obtain the high-performance integral ribbed wallboard.
According to one aspect of the invention, the grooves of the upper roll are made by machining or by connecting a plurality of sub-rolls through bearings.
According to one aspect of the invention, the axial distance of the sub-rolls is 5-20mm.
According to one aspect of the invention, the depth of the groove is 5-30mm and the width of the groove is 5-20mm.
According to one aspect of the invention, the thickness of the aluminum alloy plate is 10-30mm, the ribbed wallboard comprises a wallboard and ribs, and the depression amount of the wallboard is 60-80% of the thickness of the aluminum alloy plate.
According to one aspect of the invention, the rolling is multi-pass rolling.
According to one aspect of the invention, the solid solution temperature in the first step is 400-600 ℃ and the solid solution time is 0.5-3h.
According to one aspect of the invention, the temperature of the creep aging forming treatment in the step three is 100-200 ℃, the treatment time is 4-16h, and the creep stress is 50-300Mpa.
According to one aspect of the invention, the aluminum alloy sheet is an age-hardened aluminum alloy.
In accordance with one aspect of the invention, the age-hardened aluminum alloy includes aluminum lithium alloys, 2xxx series, 6xxx series, and 7xxx series.
The invention has the beneficial effects that:
(1) According to the application, the upper roller with the groove is used for rolling, so that the aluminum alloy plate flows and fills the groove in an extrusion state of the roller, thereby processing the ribs, realizing the integrated processing of the high dislocation density ribbed wallboard, and processing the ribs while thinning the aluminum alloy plate into the wallboard, greatly simplifying the processing flow of the component and improving the production efficiency;
(2) According to the application, the integral ribbed wallboard with high dislocation density is obtained by cold rolling at room temperature, so that the creep deformation of the wallboard in the subsequent creep aging forming treatment is greatly improved, the rebound after unloading of the creep aging forming is reduced, the design difficulty of a die in the creep aging forming process is reduced, and compared with a hot rolling process, the performance of the ribbed wallboard in the process is obviously improved;
(3) The upper roller with the groove is designed with two schemes, wherein the rollers can be assembled according to the actual production requirement by rolling the split rollers, so that the width of the ribs can be conveniently adjusted, and the production efficiency is greatly improved;
(4) The application utilizes the rolling extrusion composite-creep aging forming manufacturing, utilizes the cold rolling process to realize the integral processing of the ribbed wallboard, combines the creep aging forming treatment to obtain the ribbed wallboard with high dimensional accuracy and small residual stress, and shortens the production period of the integral ribbed wallboard.
Compared with the traditional process of riveting the ribs after the aluminum alloy plate is rolled and milling the ribbed wallboard by the thick plate, the aluminum alloy grooved cold rolling process has the advantages of higher material utilization rate and lower cost, can realize one-time rolling forming of the complex ribbed thin wallboard, has high forming precision and good stability, and compared with the wallboard obtained by hot rolling, the integral ribbed wallboard with higher dislocation density can be obtained by the cold rolling process, thereby greatly improving the creep quantity of creep aging forming and the comprehensive performance of the ribbed wallboard, and has important application value.
Drawings
FIG. 1 is a graph comparing creep amounts of the ribbed wallboard of examples 1-2 and comparative examples 1-4;
FIG. 2 is a schematic view of the rolling process of the present application;
FIG. 3 is a schematic view of the groove structure of the upper roll in two configurations of the present application;
FIG. 4 is a schematic view of a high dislocation density ribbed wallboard obtained by cold rolling prior to and after creep age forming in accordance with the present application.
Description of the drawings: 1. aluminum alloy sheet material in a quenched state; 2. an upper roller; 3. a lower roller; 4. a ribbed wallboard; 5. a groove; 6. a mold; 7. high-performance integral ribbed wallboard; 8. ribs; 21. a bearing; 22. and (5) dividing rollers.
Detailed Description
In order that the invention may be more readily understood, the invention will be further described with reference to the following examples. It should be understood that these examples are intended to illustrate the invention and not to limit the scope of the invention, and that the described embodiments are merely some, but not all, of the embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention. Unless defined otherwise, the terms of art used hereinafter are consistent with the meanings understood by those skilled in the art; unless otherwise specified, the materials referred to herein may be purchased commercially or prepared by known methods.
The invention relates to a process method for preparing a high-performance integral ribbed wallboard by carrying out roll extrusion compounding-creep age forming on an aluminum alloy plate by an upper roller 2 with a groove 5, wherein the rolling process is shown in figure 2 and mainly comprises a quenched aluminum alloy plate 1, an upper roller 2 with the groove 5, a lower roller 3 and a ribbed wallboard 4, wherein the quenched aluminum alloy plate 1 after solution quenching treatment is rolled in an original rolling direction at room temperature to obtain a ribbed wallboard 4 with ribs 8 integrally connected with the wallboard; the groove 5 structure of the upper roll 2 mainly has two design methods, the right drawing in fig. 3 is that the groove 5 with the required size is machined on the upper roll 2, and the left drawing in fig. 3 is that the groove 5 structure is produced by connecting a plurality of sub rolls 22 by using bearings 21; then creep aging treatment is carried out on the ribbed wallboard 4 with high dislocation density obtained by cold rolling, and the creep aging treatment is specifically shown as a figure 4, wherein the left diagram in the figure 4 is a schematic diagram before creep aging of the ribbed wallboard 4 after cold rolling; the right hand drawing in fig. 4 is a schematic drawing of the cold rolled ribbed wallboard 4 after creep aging.
The aluminum alloys used in the examples and comparative examples of the present invention were 300mm by 300mm in size and 10mm in thickness. The rolling mill used for rolling is a cold rolling mill for carrying out split-roll rolling, the rolling force is 1800KN, the rolling speed is 7rpm/min, the motor power is 185W, and the thickness of the wall plate in the ribbed wall plate after cold rolling is 60-80%. The thickness is 2+/-0.5 mm, then the ribbed wallboard is placed in a mould and fixed, the temperature of creep aging is selected to be 100-200 ℃ by using a hydraulic loader for pressurization, the treatment time is 4-16h, the creep stress is 50-300MPa, and meanwhile, experiments are carried out on an RMT-D10 electronic high-temperature creep endurance strength tester manufactured by think carefully Tajie company, wherein the temperature control precision of the tester is +/-2 ℃, the load precision is +/-3N, and the deformation precision is +/-0.002 mm.
Example 1
Performing solution treatment on 2219 aluminum-copper alloy plates in an air circulation resistance furnace for 45min at the temperature of 535 ℃ to obtain quenched aluminum alloy plates; then rolling is carried out at room temperature along the original rolling direction, an upper roller of a cold rolling mill consists of four sub-rollers and three bearings, a multi-pass cold rolling process is adopted, the reduction of each pass is 10%, the rolled ribbed wallboard with the thickness of the wallboard being 2mm is obtained, then the ribbed wallboard is placed in a die for creep aging forming treatment, a high-performance integral ribbed wallboard is obtained, a tensile sample after creep aging is taken, performance test is carried out, and the tensile test adopts the following standard: GB/T228-2002.
Example 2
Carrying out solution treatment on 2195 aluminum-lithium alloy plates in an air circulation resistance furnace at 510 ℃ for 30min, and immediately carrying out water quenching to obtain quenched aluminum-lithium alloy plates; because the elongation percentage of the aluminum-lithium alloy after quenching at low temperature is better, the plate is soaked for 30min by liquid nitrogen, then is rolled along the original rolling direction at room temperature, an upper roller of a cold rolling mill consists of four sub-rollers and three bearings, a multi-pass cold rolling process is adopted, the pressing amount of each pass is 10 percent, the rolled ribbed wallboard with the thickness of the wallboard being 2mm is rolled, then the ribbed wallboard is placed in a mould for creep aging forming treatment, a high-performance integral ribbed wallboard is obtained, a tensile sample after creep aging is taken, and the performance test is carried out, wherein the tensile test adopts the following standards: GB/T228-2002.
Comparative example 1
Milling 2219-T4 aluminum alloy plate by using a machining center to obtain an integral ribbed wallboard, then placing the ribbed wallboard in a die for creep aging (same as in example 1), taking a tensile sample after creep aging, and performing performance test, wherein the tensile test adopts the following standard: GB/T228-2002.
Comparative example 2
Milling 2219-T3 aluminum alloy plate by using a machining center to obtain an integral ribbed wallboard, then placing the ribbed wallboard in a die for creep aging (same as in example 1), taking a tensile sample after creep aging, and performing performance test, wherein the tensile test adopts the following standard: GB/T228-2002.
Comparative example 3
Milling 2195-T4 aluminum alloy plates by using a machining center to obtain an integral ribbed wallboard, then placing the ribbed wallboard in a die for creep aging (same as in example 2), taking a tensile sample after creep aging, and performing performance test, wherein the tensile test adopts the following standard: GB/T228-2002.
Comparative example 4
Milling 2195-T3 aluminum alloy plates by using a machining center to obtain an integral ribbed wallboard, then placing the ribbed wallboard in a die for creep aging (same as in example 2), taking a tensile sample after creep aging, and performing performance test, wherein the tensile test adopts the following standard: GB/T228-2002.
Performance detection
Example 1 and example 2 are respectively 2219 aluminum alloy integral ribbed wallboard and 2195 aluminum lithium alloy integral ribbed wallboard obtained by rolling at room temperature by separate rolls, and creep aging forming treatment is carried out on the ribbed wallboard after rolling is completed; comparative examples 1 and 2 were each a reinforced wall plate obtained by milling 2219-T4 aluminum alloy plate and 2219-T3 aluminum alloy plate, and creep aging-forming the reinforced wall plate after completion of rolling; FIG. 1 shows the creep test of the end products obtained in examples 1-2 and comparative examples 1-4. As shown in FIG. 1, compared with the traditional process (comparative examples 1-4), the creep deformation of the high dislocation density ribbed wallboard manufactured by the separate roller rolling at room temperature in the example 1 and the example 2 is greatly improved, and the requirement on the forming precision in the creep aging forming process of the aluminum alloy ribbed wallboard is more satisfied; wherein 1 in fig. 1 is a curve corresponding to embodiment 1; 2 is the curve corresponding to example 2; 3 is the curve corresponding to comparative example 1; 4 is the curve corresponding to comparative example 2; 5 is the curve corresponding to comparative example 3; 6 is the curve corresponding to comparative example 4.
Table 1 mechanical Properties of comparative examples and comparative examples after creep aging (strength unit: MPa elongation unit:%)
| Example 1 | Comparative example 1 | Comparative example 2 | Example 2 | Comparative example 3 | Comparative example 4 | |
| Yield strength of | 467 | 276 | 368 | 595 | 552 | 442 |
| Tensile strength of | 515 | 394 | 461 | 627 | 576 | 549 |
| Elongation percentage | 8.2 | 13.1 | 7.2 | 5.0 | 8.3 | 7.1 |
Table 1 shows the mechanical properties of the integral ribbed wallboard prepared in examples 1-2 and comparative examples 1-4, and the aluminum alloy ribbed wallboard rolling extrusion composite-creep age forming manufacturing process provided by the invention can obtain the integral ribbed wallboard, and meanwhile, the yield strength and the tensile strength are obviously improved, the material utilization rate is high, and the energy consumption is low. Therefore, the invention relates to a roll extrusion composite-creep aging forming manufacturing process capable of realizing the integral forming of the light high-strength aluminum alloy ribbed wallboard.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the technical scope of the present invention should be included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (8)
1. The roll extrusion composite-creep age forming manufacturing method of the high-performance aluminum alloy ribbed wallboard is characterized by comprising the following steps of:
step one: carrying out solution treatment on the aluminum alloy plate, and then carrying out water quenching to obtain a quenched aluminum alloy plate;
step two: rolling the quenched aluminum alloy plate along the original rolling direction at room temperature to obtain a ribbed wallboard; wherein, the rolling is carried out by a cold rolling mill, and the outer circumferential surface of an upper roller of the cold rolling mill is provided with a groove in a ring manner; wherein the depth of the groove is 5-30mm, and the width of the groove is 5-20mm;
step three: placing the ribbed wallboard in a mould for creep aging forming treatment to obtain a high-performance integral ribbed wallboard;
The thickness of the aluminum alloy plate is 10-30mm, the ribbed wallboard comprises a wallboard and ribs, and the pressing amount of the wallboard is 60-80% of the thickness of the aluminum alloy plate.
2. The method for manufacturing the high-performance aluminum alloy ribbed wallboard by rolling extrusion composite-creep age forming according to claim 1, wherein the grooves of the upper roller are manufactured by machining or are formed by connecting a plurality of sub-rollers through bearings.
3. The method for manufacturing the high-performance aluminum alloy ribbed wallboard by rolling extrusion composite-creep age forming according to claim 2, wherein the axial distance of the sub-rollers is 5-20mm.
4. The method for manufacturing the high-performance aluminum alloy ribbed wallboard by rolling extrusion composite-creep age forming according to claim 1, wherein the rolling is multi-pass rolling.
5. The method for manufacturing the high-performance aluminum alloy ribbed wallboard by rolling extrusion composite-creep age forming according to claim 1, wherein the solid solution temperature in the first step is 400-600 ℃, and the solid solution time is 0.5-3h.
6. The manufacturing method of the high-performance aluminum alloy ribbed wallboard by rolling extrusion composite-creep aging forming according to claim 1, wherein the temperature of the creep aging forming treatment in the third step is 100-200 ℃, the treatment time is 4-16h, and the creep stress is 50-300Mpa.
7. The method for manufacturing the high-performance aluminum alloy ribbed wallboard by rolling extrusion composite-creep age forming according to claim 1, wherein the aluminum alloy plate is age hardening aluminum alloy.
8. The method of manufacturing a high performance aluminum alloy ribbed wallboard of claim 7, wherein the age-hardened aluminum alloy includes aluminum lithium alloy, 2xxx series, 6xxx series, and 7xxx series.
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| DE102008023174A1 (en) * | 2008-05-10 | 2009-11-12 | Philipp Boecker + Wender Stahl Besitzgesellschaft mbH & Co. KG | Metal plate i.e. heat exchanger plate, manufacturing method, involves structured rolling of steel band, adjusting band in conveying direction under tension during deformation of band, and performing rolling process in multi-stages |
| CN102978545A (en) * | 2012-11-21 | 2013-03-20 | 中南大学 | Method for creep age forming of Al-Zn-Mg-Cu series aluminium alloy plate |
| CN206854355U (en) * | 2017-06-27 | 2018-01-09 | 江苏蒙迪克机电科技有限公司 | A kind of composite (back-up) roll for rolling spiral grooved tube |
| CN108486508A (en) * | 2018-02-07 | 2018-09-04 | 中南大学 | A kind of efficient creep age forming method of aluminium alloy |
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