CN115532947B - Indirect thermoforming die and method for aluminum alloy - Google Patents
Indirect thermoforming die and method for aluminum alloy Download PDFInfo
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- CN115532947B CN115532947B CN202211140373.XA CN202211140373A CN115532947B CN 115532947 B CN115532947 B CN 115532947B CN 202211140373 A CN202211140373 A CN 202211140373A CN 115532947 B CN115532947 B CN 115532947B
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- aluminum alloy
- die
- upper die
- lower die
- alloy plate
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/02—Stamping using rigid devices or tools
- B21D22/022—Stamping using rigid devices or tools by heating the blank or stamping associated with heat treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/16—Heating or cooling
-
- 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
- C21D1/62—Quenching devices
- C21D1/673—Quenching devices for die quenching
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/002—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working by rapid cooling or quenching; cooling agents used therefor
-
- 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
Abstract
The invention discloses an aluminum alloy indirect hot forming die, which relates to the technical field of plastic forming of plates and comprises an upper die and a lower die, wherein the upper die and/or the lower die can be connected with a pressure device, and the pressure device is used for driving the upper die and/or the lower die to move so as to realize separation or die assembly of the upper die and the lower die; the bottom of the upper die is provided with a first cooling mechanism, the top of the lower die is provided with a heating mechanism, and the periphery of the lower die is provided with a second cooling mechanism; or, the bottom of the upper die is provided with a heating mechanism, the top of the lower die is provided with a first cooling mechanism, and the periphery of the upper die is provided with a second cooling mechanism. The invention also provides an aluminum alloy indirect thermoforming method which is implemented by adopting the aluminum alloy indirect thermoforming die. The invention realizes the integrated formation of the aluminum alloy, reduces the transfer time of parts and improves the production efficiency.
Description
Technical Field
The invention relates to the technical field of plastic forming of plates, in particular to an indirect hot forming die and method for aluminum alloy.
Background
In the conventional aluminum alloy indirect hot forming technology, because of the continuity and variety of processes (including cold forming, solution treatment, rapid quenching and pressure maintaining processes), a relatively large number of devices are required; the existing aluminum alloy indirect hot forming die generally comprises a plurality of devices such as a cold forming die, a heat treatment furnace, a pressure maintaining quenching die and the like, so that the production cost is increased, and meanwhile, in the indirect hot forming process, parts are required to be transferred to different devices, so that the transfer time of the parts is increased, and the production efficiency is reduced.
Disclosure of Invention
The invention aims to provide an indirect aluminum alloy hot forming die and method, which are used for solving the problems in the prior art, realizing the integrated forming of aluminum alloy, reducing the transfer time of parts and improving the production efficiency.
In order to achieve the above object, the present invention provides the following solutions:
the invention provides an aluminum alloy indirect thermoforming die which comprises an upper die and a lower die, wherein the upper die and/or the lower die can be connected with a pressure device, and the pressure device is used for driving the upper die and/or the lower die to move so as to separate or clamp the upper die and the lower die; the bottom of the upper die is provided with a first cooling mechanism, the top of the lower die is provided with a heating mechanism, and the periphery of the lower die is provided with a second cooling mechanism; or, the bottom of the upper die is provided with a heating mechanism, the top of the lower die is provided with a first cooling mechanism, and the periphery of the upper die is provided with a second cooling mechanism.
Preferably, the first cooling mechanism includes a first cooling water pipe, the first cooling water pipe is disposed in the upper die, and cooling water is introduced into the first cooling water pipe.
Preferably, the heating mechanism comprises a heating wire, a heating hole is formed in the lower die, and the heating wire is installed in the heating hole.
Preferably, the second cooling mechanism comprises a cold water plate, the cold water plate is arranged around the lower die, a second cooling water pipeline is arranged in the cold water plate, and the second cooling water pipeline is used for introducing cooling water.
Preferably, the aluminum alloy indirect thermoforming mold further comprises a heat insulating layer, and the heat insulating layer covers the aluminum alloy plate when the aluminum alloy plate is indirectly thermoformed.
Preferably, the heat insulation layer is dust-free asbestos cloth.
Preferably, the heat insulation layer is detachably mounted at the bottom of the upper die.
The invention also provides an aluminum alloy indirect thermoforming method, which adopts the aluminum alloy indirect thermoforming die and comprises the following steps:
s1, placing an aluminum alloy plate on the lower die, and descending the upper die to finish the room-temperature pre-deformation of the aluminum alloy plate;
s2, the heating mechanism works, the lower die is heated to the solid solution temperature of the aluminum alloy plate, and heat is preserved, so that the solid solution treatment of the aluminum alloy plate is completed;
s3, stopping the heating mechanism;
s4, the first cooling mechanism and the second cooling mechanism work to finish quenching the aluminum alloy plate;
s5, the upper die is ascended, and the formed aluminum alloy plate is taken out.
Preferably, in the step S1, before the upper die downlink, the method further includes: covering a heat insulation layer above the aluminum alloy plate;
in the step S3, after the heating mechanism stops working, the method further includes: and the upper die is upward moved, the heat insulation layer is taken out, then the upper die is downward moved and is closed with the lower die, and the final forming of the aluminum alloy plate is completed.
Preferably, in the step S4, the quenching cooling rate of the aluminum alloy plate is more than or equal to 27 ℃/S.
Compared with the prior art, the invention has the following beneficial technical effects:
the aluminum alloy indirect hot forming die is provided with the first cooling mechanism, the heating mechanism and the second cooling mechanism, and the aluminum alloy plate can be subjected to solution treatment by heating through the heating mechanism in a combined mode, and the die can be rapidly cooled through the first cooling mechanism and the second cooling mechanism, so that rapid quenching of the aluminum alloy plate is realized; therefore, the cold forming (room temperature pre-deformation), solution treatment, rapid quenching and pressure maintaining full flow of the aluminum alloy plate can be completed in one set of device through the sequential forming process, compared with the traditional aluminum alloy indirect hot forming process, the process equipment and the part transferring time are saved, the production efficiency is improved, and the production cost is saved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic flow chart of an indirect hot forming method of an aluminum alloy in an embodiment of the invention;
FIG. 2 is a schematic view of an aluminum alloy sheet and a heat insulating layer in accordance with an embodiment of the present invention;
FIG. 3 is a schematic view showing room temperature pre-deformation of an aluminum alloy sheet in an embodiment of the present invention;
FIG. 4 is a schematic view of solution treatment of an aluminum alloy sheet material in an embodiment of the present invention;
FIG. 5 is a schematic illustration of the final formation of an aluminum alloy sheet in an embodiment of the present invention;
FIG. 6 is a schematic diagram of rapid quenching and dwell pressure of aluminum alloy sheet material in an embodiment of the invention;
FIG. 7 is a schematic illustration of the final part in an embodiment of the invention;
the aluminum alloy plate comprises a heat insulation layer 1, an aluminum alloy plate 2, an upper die holder 3, an upper die 4, a lower die 5, a cold water plate 6, a lower die holder 7, a second cooling water pipeline 8, a heating hole 9, a first cooling water pipeline 10 and a final part 11.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. 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.
The invention aims to provide an indirect aluminum alloy hot forming die and method, which are used for solving the problems in the prior art, realizing the integrated forming of aluminum alloy, reducing the transfer time of parts and improving the production efficiency.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
Example 1
As shown in fig. 1 to 7, the embodiment provides an aluminum alloy indirect thermoforming mold, which comprises an upper mold 4 and a lower mold 5, wherein the upper mold 4 and/or the lower mold 5 can be connected with a pressure device, and the pressure device is used for driving the upper mold 4 and/or the lower mold 5 to move up and down so as to separate or mold the upper mold 4 and the lower mold 5; the pressure device may be selected according to specific working requirements, such as selecting a press or a hydraulic cylinder, which is a mature prior art in the field, and will not be described in detail in this embodiment.
In this embodiment, a first cooling mechanism is disposed at the bottom of the upper die 4, a heating mechanism is disposed at the top of the lower die 5, and a second cooling mechanism is disposed at the periphery of the lower die 5; or, the bottom of the upper die 4 is provided with a heating mechanism, the top of the lower die 5 is provided with a first cooling mechanism, and the periphery of the upper die 4 is also provided with a second cooling mechanism.
As a preferred embodiment, in this embodiment, the upper die 4 is connected with a pressure device, a first cooling mechanism is disposed at the bottom of the upper die 4, a heating mechanism is disposed at the top of the lower die 5, and a second cooling mechanism is disposed at the periphery of the lower die 5; the embodiment adopts the combination form, and the cold forming (room temperature pre-deformation), solution treatment, rapid quenching and pressure maintaining full flow of the aluminum alloy plate 2 are completed in one set of device through the sequential forming process, so that compared with the traditional aluminum alloy indirect hot forming process, the process equipment and the part transfer time are saved, the production efficiency is improved, and the production cost is saved.
In this embodiment, the first cooling mechanism includes a first cooling water pipe 10, the first cooling water pipe 10 is disposed in the upper mold 4, and cooling water is introduced into the first cooling water pipe 10.
In this embodiment, the heating mechanism includes a heating wire, a heating hole 9 is provided in the lower die 5, and the heating wire is installed in the heating hole 9; wherein, the heating wire is preferably a resistance wire; alternatively, the heating mechanism may use a heating water pipe, and the heating water pipe is disposed in the heating hole 9 to heat.
In this embodiment, the second cooling mechanism includes a cold water plate 6, the cold water plate 6 is disposed around the lower die 5, a second cooling water pipe 8 is disposed in the cold water plate 6, and the second cooling water pipe 8 is used for introducing cooling water.
In this embodiment, the first cooling mechanism and the second cooling mechanism may also adopt an air cooling mechanism or other cooling mechanisms according to specific working requirements.
In this embodiment, the aluminum alloy indirect thermoforming mold further includes a heat insulating layer 1, and when the aluminum alloy plate 2 is indirectly thermoformed, the heat insulating layer 1 covers over the aluminum alloy plate 2, so that heat can be prevented from being transferred upwards to the upper mold 4. Wherein, the heat insulating layer 1 is made of a light and thin cloth-like material with good heat insulating effect, such as glass fiber cloth or dust-free asbestos cloth, and the embodiment is preferably dust-free asbestos cloth.
In this embodiment, the top of the upper die 4 is mounted on the upper die holder 3, and the bottom of the lower die 5 is mounted on the lower die holder 7; the pressure device is connected with the upper die holder 3 and can drive the upper die holder 3 and the upper die 4 to move up and down together.
The embodiment also provides an aluminum alloy indirect thermoforming method, which adopts the aluminum alloy indirect thermoforming die and mainly comprises the following steps:
s1, placing an aluminum alloy plate 2 on the lower die 5, and enabling the upper die 4 to descend to finish the room-temperature pre-deformation of the aluminum alloy plate 2;
s2, introducing a resistance wire into the heating hole 9, electrifying the resistance wire, working the resistance wire, heating the lower die 5 to the solid solution temperature of 540 ℃ of the aluminum alloy plate 2, and preserving heat for 30 minutes to finish the solid solution treatment of the aluminum alloy plate 2;
s3, cutting off the power, and stopping working of the resistance wire;
s4, circulating cooling water is introduced into a first cooling water pipeline 10 on the upper die 4 and a second cooling water pipeline 8 on the cold water plate 6 to take away heat on the lower die 5, the cold water plate 6 and the aluminum alloy plate 2, so that quenching of the aluminum alloy plate 2 is completed, and a final part 11 is formed; when quenching is carried out, the upper die 4 and the lower die 5 are closed for pressure maintaining, so that rebound deformation of the part caused by release of thermal stress is prevented, and the size and shape precision of the product are ensured;
and S5, the upper die 4 ascends, and the final part 11 is taken out.
In this embodiment, in the step S1, the heat insulation layer 1 is covered over the aluminum alloy plate 2, and then is placed on the lower mold 5 together, where the heat insulation layer 1 can prevent heat from being transferred to the upper mold 4, so as to ensure that the aluminum alloy plate 2 in the step S4 has a sufficient cooling rate;
in the step S3, after the resistance wire stops working, the method further includes: and the upper die 4 goes upward, the heat insulation layer 1 is taken out, then the upper die 4 goes downward and is closed with the lower die 5, and the final forming of the aluminum alloy plate 2 is completed.
In this embodiment, in the step S4, the quenching cooling rate of the aluminum alloy sheet material 2 is ensured to be equal to or greater than 27 ℃/S by adjusting the temperature and the flow rate of the cooling water in the first cooling water pipe 10 and the second cooling water pipe 8.
It should be noted that it will be apparent to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, but may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
The principles and embodiments of the present invention have been described in detail with reference to specific examples, which are provided to facilitate understanding of the method and core ideas of the present invention; also, it is within the scope of the present invention to be modified by those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the invention.
Claims (7)
1. An aluminum alloy indirect thermoforming die comprises an upper die and a lower die, wherein the upper die and/or the lower die can be connected with a pressure device, and the pressure device is used for driving the upper die and/or the lower die to move so as to separate or clamp the upper die and the lower die; the method is characterized in that: the bottom of the upper die is provided with a first cooling mechanism, the top of the lower die is provided with a heating mechanism, and the periphery of the lower die is provided with a second cooling mechanism; the first cooling mechanism comprises a first cooling water pipeline, the first cooling water pipeline is arranged in the upper die, cooling water is introduced into the first cooling water pipeline, the heating mechanism comprises a heating wire, a heating hole is formed in the lower die, and the heating wire is installed in the heating hole; the second cooling mechanism comprises a cold water plate, the cold water plate surrounds the lower die, a second cooling water pipeline is arranged in the cold water plate, and the second cooling water pipeline is used for introducing cooling water.
2. The aluminum alloy indirect hot forming die according to claim 1, wherein: the aluminum alloy indirect thermoforming mold further comprises a heat insulation layer, and the heat insulation layer covers the aluminum alloy plate when the aluminum alloy plate is indirectly thermoformed.
3. The aluminum alloy indirect hot forming die according to claim 2, wherein: the heat insulation layer is dust-free asbestos cloth.
4. An aluminum alloy indirect heat forming die according to claim 2 or 3, wherein: the heat insulation layer is detachably arranged at the bottom of the upper die.
5. An indirect thermoforming method of aluminum alloy is characterized in that: use of an indirect hot forming die for aluminum alloys according to any of claims 1 to 4, comprising the steps of:
s1, placing an aluminum alloy plate on the lower die, and descending the upper die to finish the room-temperature pre-deformation of the aluminum alloy plate;
s2, the heating mechanism works, the lower die is heated to the solid solution temperature of the aluminum alloy plate, and heat is preserved, so that the solid solution treatment of the aluminum alloy plate is completed;
s3, stopping the heating mechanism;
s4, the first cooling mechanism and the second cooling mechanism work to finish quenching the aluminum alloy plate;
s5, the upper die is ascended, and the formed aluminum alloy plate is taken out.
6. The indirect hot forming method of aluminum alloy according to claim 5, wherein: in the step S1, before the upper die downlink, the method further includes: covering a heat insulation layer above the aluminum alloy plate;
in the step S3, after the heating mechanism stops working, the method further includes: and the upper die is upward moved, the heat insulation layer is taken out, then the upper die is downward moved and is closed with the lower die, and the final forming of the aluminum alloy plate is completed.
7. The indirect hot forming method of aluminum alloy according to claim 5, wherein: in the step S4, the quenching cooling rate of the aluminum alloy plate is more than or equal to 27 ℃/S.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211140373.XA CN115532947B (en) | 2022-09-20 | 2022-09-20 | Indirect thermoforming die and method for aluminum alloy |
| PCT/CN2023/091322 WO2024060624A1 (en) | 2022-09-20 | 2023-04-27 | Indirect thermoforming mold and method for aluminum alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211140373.XA CN115532947B (en) | 2022-09-20 | 2022-09-20 | Indirect thermoforming die and method for aluminum alloy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115532947A CN115532947A (en) | 2022-12-30 |
| CN115532947B true CN115532947B (en) | 2023-08-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202211140373.XA Active CN115532947B (en) | 2022-09-20 | 2022-09-20 | Indirect thermoforming die and method for aluminum alloy |
Country Status (2)
| Country | Link |
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| CN (1) | CN115532947B (en) |
| WO (1) | WO2024060624A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115532947B (en) * | 2022-09-20 | 2023-08-29 | 北京机科国创轻量化科学研究院有限公司 | Indirect thermoforming die and method for aluminum alloy |
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| CN102615201A (en) * | 2012-04-25 | 2012-08-01 | 哈尔滨工业大学 | Cold-hot compound die molding method for aluminum alloy sheet metal component |
| WO2014068494A1 (en) * | 2012-10-31 | 2014-05-08 | Aisin Takaoka Co., Ltd. | Die-quenching apparatus and method of an aluminum alloy material |
| CN105107939A (en) * | 2015-09-18 | 2015-12-02 | 武汉理工大学 | Continuous hot stamping device and technology |
| CN106077298A (en) * | 2016-08-09 | 2016-11-09 | 机械科学研究总院先进制造技术研究中心 | A kind of breadth light alloy plate High Efficiency Thermal press forming die |
| CN206383373U (en) * | 2017-01-19 | 2017-08-08 | 东莞市锦润塑胶科技有限公司 | Lid compression tool in one kind cleaning stable baking machine |
| CN111672954A (en) * | 2020-03-18 | 2020-09-18 | 苏州思赛力热能发展有限公司 | Indirect thermal forming method for plate parts |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20090242086A1 (en) * | 2008-03-31 | 2009-10-01 | Honda Motor Co., Ltd. | Microstructural optimization of automotive structures |
| CN107344202A (en) * | 2017-08-09 | 2017-11-14 | 安徽红桥金属制造有限公司 | A kind of efficient diel of nutplate |
| CN111014406A (en) * | 2020-01-22 | 2020-04-17 | 湖南科技大学 | Forming device and forming method for aluminum alloy plate hot forming-online quenching combination |
| CN115532947B (en) * | 2022-09-20 | 2023-08-29 | 北京机科国创轻量化科学研究院有限公司 | Indirect thermoforming die and method for aluminum alloy |
-
2022
- 2022-09-20 CN CN202211140373.XA patent/CN115532947B/en active Active
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2023
- 2023-04-27 WO PCT/CN2023/091322 patent/WO2024060624A1/en unknown
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102615201A (en) * | 2012-04-25 | 2012-08-01 | 哈尔滨工业大学 | Cold-hot compound die molding method for aluminum alloy sheet metal component |
| WO2014068494A1 (en) * | 2012-10-31 | 2014-05-08 | Aisin Takaoka Co., Ltd. | Die-quenching apparatus and method of an aluminum alloy material |
| CN105107939A (en) * | 2015-09-18 | 2015-12-02 | 武汉理工大学 | Continuous hot stamping device and technology |
| CN106077298A (en) * | 2016-08-09 | 2016-11-09 | 机械科学研究总院先进制造技术研究中心 | A kind of breadth light alloy plate High Efficiency Thermal press forming die |
| CN206383373U (en) * | 2017-01-19 | 2017-08-08 | 东莞市锦润塑胶科技有限公司 | Lid compression tool in one kind cleaning stable baking machine |
| CN111672954A (en) * | 2020-03-18 | 2020-09-18 | 苏州思赛力热能发展有限公司 | Indirect thermal forming method for plate parts |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2024060624A1 (en) | 2024-03-28 |
| CN115532947A (en) | 2022-12-30 |
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