CN115121608B - Pulse current-assisted different-temperature rolling composite feeding device and composite method - Google Patents
Pulse current-assisted different-temperature rolling composite feeding device and composite method Download PDFInfo
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- CN115121608B CN115121608B CN202210827742.6A CN202210827742A CN115121608B CN 115121608 B CN115121608 B CN 115121608B CN 202210827742 A CN202210827742 A CN 202210827742A CN 115121608 B CN115121608 B CN 115121608B
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- 238000005096 rolling process Methods 0.000 title claims abstract description 51
- 239000002131 composite material Substances 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 28
- 239000002905 metal composite material Substances 0.000 claims abstract description 12
- 229910052751 metal Inorganic materials 0.000 claims description 101
- 239000002184 metal Substances 0.000 claims description 101
- 239000000463 material Substances 0.000 claims description 35
- 238000007789 sealing Methods 0.000 claims description 20
- 238000013329 compounding Methods 0.000 claims description 14
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 8
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 5
- 238000005498 polishing Methods 0.000 claims description 5
- 229910052786 argon Inorganic materials 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 3
- 244000137852 Petrea volubilis Species 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 3
- 239000011261 inert gas Substances 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 3
- 230000009467 reduction Effects 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 238000012546 transfer Methods 0.000 claims description 2
- 238000010301 surface-oxidation reaction Methods 0.000 claims 1
- 238000002360 preparation method Methods 0.000 abstract description 5
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 16
- 229910052750 molybdenum Inorganic materials 0.000 description 16
- 239000011733 molybdenum Substances 0.000 description 16
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 7
- 229910052802 copper Inorganic materials 0.000 description 7
- 239000010949 copper Substances 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 4
- 150000002739 metals Chemical class 0.000 description 4
- WUUZKBJEUBFVMV-UHFFFAOYSA-N copper molybdenum Chemical compound [Cu].[Mo] WUUZKBJEUBFVMV-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 238000005098 hot rolling Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- UQZIWOQVLUASCR-UHFFFAOYSA-N alumane;titanium Chemical compound [AlH3].[Ti] UQZIWOQVLUASCR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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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
- B21B1/38—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 sheets of limited length, e.g. folded sheets, superimposed sheets, pack rolling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/74—Temperature control, e.g. by cooling or heating the rolls or the product
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/004—Heating the product
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B47/00—Auxiliary arrangements, devices or methods in connection with rolling of multi-layer sheets of metal
-
- 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
- B21B1/38—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 sheets of limited length, e.g. folded sheets, superimposed sheets, pack rolling
- B21B2001/386—Plates
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
- Metal Rolling (AREA)
Abstract
The invention provides a pulse current-assisted differential temperature rolling composite feeding device and a composite method, and relates to the technical field of differential temperature rolling. The method can solve the problems of inconsistent deformation and low interfacial bonding strength of the difficult/easy-to-deform metal composite plate, and can be suitable for rolling preparation of various difficult/easy-to-deform metal composite plates.
Description
Technical Field
The invention relates to the technical field of differential temperature rolling, in particular to a pulse current-assisted differential temperature rolling composite feeding device and a composite method.
Background
With the development of industry, single metal plates are gradually unable to meet the demands of manufacturing industry due to cost, structure, performance and other factors. The bimetal composite plate is a composite material formed by metallurgically bonding metals with different performances on an interface by utilizing various composite technologies. Through proper material selection and reasonable structural design, the metal composite plate can greatly improve the thermal expansibility, strength, toughness, wear resistance, corrosion resistance, electrical property, magnetic property and other properties of a single metal material, so that the metal composite plate is widely applied to the industrial fields of petroleum, chemical industry, ships, metallurgy, electric power, water conservancy, traffic, environmental protection, food, pharmacy and the like. Besides the structural and functional characteristics, the metal composite plate can save noble metals and obviously reduce the cost of various equipment materials.
At present, the preparation methods of the metal composite plate mainly comprise an explosion compounding method, an explosion-rolling compounding method, a rolling compounding method and the like. Although the two preparation methods of the explosion compounding method and the explosion-rolling compounding method are widely applied to metal combination and have flexible production modes, the preparation method has high technical requirements in specific processing and manufacturing, is difficult to accurately control, is greatly influenced by external environment and has low production efficiency. Although the traditional rolling compounding method can carry out high-efficiency continuous production, for the difficult/easy-to-deform metal composite plate, the deformation coordination capability between two metals is poor, the composite plate has serious warpage and large residual stress, and high-strength compounding is difficult to realize. The common hot rolling technology of the metal composite plate adopts common flat roller hot rolling, the rolling temperature is high, brittle compounds are easy to generate at the interface, the bonding strength is low, and the problem of poor deformation coordination among dissimilar metals is solved.
Disclosure of Invention
In view of the above, the invention aims to provide a pulse current assisted differential temperature rolling composite feeding device and a composite method, and the feeding device provided by the invention can enable difficult-to-deform metal to generate thermoplastic and electro-plastic effects under the assistance of pulse current, so that the deformation resistance of the difficult-to-deform metal is reduced, and the plasticity is enhanced, thereby solving the technical problem that the coordinated deformation and metallurgical bonding between the existing metal plates with different extensibility are difficult.
The invention adopts the following technical means:
the utility model provides a pulse current assists different temperature roll system composite feeding device, includes the device body, the device body is including upper feed box and the lower floor's feed box that links to each other, one side of upper feed box and lower floor's feed box is sealed through sealed lid, sealed covering is provided with the air inlet, be provided with the heat insulating board in the middle of upper feed box and the lower floor's feed box, be provided with the yielding metal sheet in the upper feed box, the yielding metal sheet is close to sealed lid side and is provided with the push rod, the push rod runs through sealed lid setting, be provided with difficult yielding metal sheet in the lower floor's feed box, difficult yielding metal sheet is close to sealed lid side and is provided with the push rod down, the push rod is inside to be provided with down push rod electrode down, the one end of push rod electrode contacts with difficult yielding metal sheet down, the other end of push rod electrode links to each other with power supply unit, power supply unit's other with roll end electrode links to each other, roll end electrode links to each other with the lower roll down, the top of roll is provided with the upper roll.
The invention also provides a pulse current auxiliary different-temperature rolling composite method, which is realized based on the pulse current auxiliary different-temperature rolling composite feeding device and comprises the following steps:
preparing a deformable metal plate and a difficult-to-deform metal plate, removing a surface oxide layer from the deformable metal plate and the difficult-to-deform metal plate, and cleaning the surface to obtain a pretreated deformable metal plate and a pretreated difficult-to-deform metal plate;
opening a sealing cover, putting the pretreated easily deformable metal plate into an upper layer material box, putting the pretreated difficultly deformable metal plate into a lower layer material box, pushing the difficultly deformable metal plate towards a lower roller by using a lower push rod until one end of the difficultly deformable metal plate is completely contacted with the lower roller, and closing the sealing cover;
maintaining the lower push rod electrode to be in contact with the difficult-to-deform metal plate, introducing argon into a lower layer material box from an air inlet, starting a power supply device to introduce pulse current into the difficult-to-deform metal plate, and preheating the difficult-to-deform metal plate;
and setting the rolling reduction and the rolling speed of the roller, keeping supplying pulse current to the metal plate difficult to deform, and pushing the metal plate easy to deform and the metal plate difficult to deform into the upper roller and the lower roller at the synchronous speed by the upper push rod and the lower push rod to roll the composite plate, so as to obtain the metal composite plate difficult to deform/easy to deform.
Further, the elongation of the hard-to-deform metal plate after preheating is the same as the elongation of the ductile metal plate.
Further, the length of the easily deformable metal plates is smaller than the length of the hardly deformable metal plates.
Further, removing the surface oxide layer from the easily deformable metal plate and the difficultly deformable metal plate and cleaning the surface comprises the following steps: polishing the easily deformable metal plates and the difficultly deformable metal plates by using fine sand paper, and wiping the polished metal plates with absolute ethyl alcohol or acetone.
Further, the temperature of the easily deformable metal plate in the upper layer material box is the same as the room temperature, the preheated temperature of the difficultly deformable metal plate is 400-1200 ℃, and the distance between the easily deformable metal plate and the difficultly deformable metal plate is kept so as to avoid heat transfer to the easily deformable metal plate in the preheating process of the difficultly deformable metal plate.
Further, the preheating temperature is the same as the rolling temperature of the difficult-to-deform metal plate.
Further, in the rolling process of the composite plate, inert gas is continuously filled in the lower layer material box.
Compared with the prior art, the invention has the following advantages:
the invention discloses a pulse current auxiliary different-temperature rolling composite feeding device and a composite method. The feeding device is used for rolling the difficult/easy-to-deform metal composite plate, so that the good plate shape, the composite strength and the interface bonding performance can be obtained, various mechanical properties can be improved, the processing standard and the requirements are met, and the obtained composite plate has the advantages of two metals. The device is clean and efficient, has low requirements on external environment and equipment, has high reliability, and can realize large-scale mass production. The invention can solve the problems of inconsistent deformation and low interface bonding strength of the difficult/easy-to-deform metal, and is applicable to rolling preparation of various difficult/easy-to-deform metal composite plates.
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 required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to the drawings without inventive effort to a person skilled in the art.
FIG. 1 is a flow chart of the differential temperature rolled composite plate of the invention.
Fig. 2 is a front view of the feeding device of the present invention.
FIG. 3 is a schematic diagram of an electrical pulse heating circuit of the feeding device of the present invention.
Fig. 4 is a schematic view of the rolling process according to the present invention.
In the figure: 1. an upper push rod; 2. sealing cover; 3. an upper layer material box; 4. a deformable metal plate; 5. an upper roller; 6. a lower roller; 7. a roll end electrode; 8. a heat insulating plate; 9. a lower layer material box; 10. a metal plate which is difficult to deform; 11. a lower push rod electrode; 12. an air inlet; 13. a push rod is downwards pushed; 14. a power supply device.
Detailed Description
In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The easy-to-deform metal plate and the difficult-to-deform metal plate are relatively, and in the rolling process of the composite plate, the rolled composite plate is deformed incongruously due to different properties of the two materials, and after the same rolling process, the metal with large deformation is easy-to-deform metal, and the metal with small deformation is difficult-to-deform metal. For example: the titanium aluminum plate is subjected to compound rolling, wherein aluminum is large in deformation and is easy to deform; titanium is a difficult-to-deform metal with little deformation. In the rolling of the copper-molybdenum composite plate, the deformation of copper is large, and the copper is easy to deform; the deformation amount of molybdenum is small, and the molybdenum is difficult to deform.
As shown in fig. 2, the invention provides a pulse current auxiliary abnormal temperature rolling composite feeding device, which comprises a device body, wherein the device body comprises an upper layer material box 3 and a lower layer material box 9 which are connected, one sides of the upper layer material box 3 and the lower layer material box 9 are sealed through a sealing cover 2, an air inlet 12 is arranged on the sealing cover 2, a heat insulation plate 8 is arranged between the upper layer material box 3 and the lower layer material box 9, a deformable metal plate 4 is arranged in the upper layer material box 3, an upper push rod 1 is arranged on the side, close to the sealing cover 2, of the deformable metal plate 4, the upper push rod 1 penetrates through the sealing cover 2, a difficult-to-deform metal plate 10 is arranged in the lower layer material box 9, a lower push rod 13 is arranged on the side, close to the sealing cover 2, the lower push rod 13 penetrates through the sealing cover 2, a lower push rod electrode 11 is arranged in the lower push rod 13, one end of the lower push rod electrode 11 is in contact with the difficult-to-deform metal plate 10, the other end of the lower push rod 11 is connected with a power supply device 14, the other end of the power supply device 14 is connected with the other end 7 of the push rod 14, the other end 7 of the lower electrode 7 is connected with the lower roller 5, and the upper roller 5 is arranged below the roller 5.
The invention also provides a pulse current auxiliary different-temperature rolling composite method, which is shown in fig. 1, 3 and 4 and comprises the following steps:
s1, preparing a blank: selecting a copper plate with the thickness of 150mm multiplied by 30mm multiplied by 2mm and a molybdenum plate with the thickness of 200mm multiplied by 30mm multiplied by 2mm, sequentially polishing the interface to be combined of the copper plate and the molybdenum plate by 400-mesh, 800-mesh and 1200-mesh sand paper, removing greasy dirt and an oxide film on the interface to be combined, polishing by a polishing machine, eliminating rough scratches on the interface to be combined of the copper plate and the molybdenum plate, and fully cleaning the surface of the polished plate by absolute ethyl alcohol and acetone;
s2, boxing the blank: pushing the prepared copper plate into the upper-layer feed box 3 from a feed inlet by using an upper push rod 1, pushing the molybdenum plate into the lower-layer feed box 9 from the feed inlet by using a lower push rod 13, and pushing the molybdenum plate to a roller until the right end of the molybdenum plate is completely contacted with the lower roller 6, sealing a sealing cover 2 on the left side of the upper feed box, and preventing air from flowing into the lower-layer feed box 9 in the rolling process;
s3, heating the molybdenum plate: the lower push rod electrode 11 at the top end of the lower push rod 13 is kept in contact with the molybdenum plate, the contact between the molybdenum plate and the lower roller 6 is kept, argon is introduced into the lower feed box 9 from the air inlet of the sealing cover 2, so that the lower feed box 9 is filled with inert gas, the molybdenum plate is prevented from being oxidized in the heating process, and the pulse current parameter setting range is as follows: the pulse current density is 100-1000A/mm < 2 >, the frequency is 500-3000 Hz, the pulse width is 30-100 mu m, a heat insulation plate 8 is adopted between an upper layer material box and a lower layer material box to isolate difficult and easy-to-deform metal plates, a power supply is connected, the molybdenum plates in the lower layer material box 9 are preheated, and the temperature for meeting the rolling deformation of the molybdenum plates is heated;
s4, rolling the composite plate: setting rolling reduction ratio to be 60%, rolling speed to be 25r/min, continuously introducing pulse current, keeping the temperature of the molybdenum plate stable in the rolling process, keeping the lower layer feed box 9 to be always introduced with argon in the rolling process, keeping synchronous feeding between the upper push rod 1 and the lower push rod 13, pushing the copper plate and the molybdenum plate into a roller, and rolling the molybdenum-copper composite plate to obtain the composite plate of difficult/easy-to-deform metal.
The working principle of the metal plate is to utilize pulse current to assist in heating, change the plasticity of the metal plate difficult to deform through temperature and current action, and enable the rolling deformation of the metal plate difficult to deform and the metal plate easy to deform to be consistent, so that good compounding of the metal plate difficult to deform is realized.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (8)
1. The utility model provides a compound material feeding unit of pulse current auxiliary different temperature rolling which characterized in that: the device comprises a device body, the device body comprises an upper layer material box (3) and a lower layer material box (9) which are connected, one sides of the upper layer material box (3) and the lower layer material box (9) are sealed through a sealing cover (2), an air inlet (12) is formed in the sealing cover (2), a heat insulation plate (8) is arranged between the upper layer material box (3) and the lower layer material box (9), a deformable metal plate (4) is arranged in the upper layer material box (3), an upper push rod (1) is arranged on the side, close to the sealing cover (2), of the deformable metal plate (4), the upper push rod (1) penetrates through the sealing cover (2), a difficult-to-deform metal plate (10) is arranged in the lower layer material box (9), a lower push rod (13) is arranged on the side, which is close to the sealing cover (2), one end of the lower push rod (11) is in contact with the difficult-to-deform metal plate (10), the other end of the lower push rod (11) is connected with a roller (7) through the sealing cover (2), the other end of the lower push rod (11) is connected with a roller (14), an upper roller (5) is arranged above the lower roller (6).
2. The pulse current assisted differential temperature rolling composite method is realized based on the pulse current assisted differential temperature rolling composite feeding device disclosed in claim 1, and is characterized by comprising the following steps:
preparing an easily deformable metal plate (4) and a difficultly deformable metal plate (10), removing surface oxidation layers of the easily deformable metal plate (4) and the difficultly deformable metal plate (10), and cleaning the surfaces to obtain a pretreated easily deformable metal plate (4) and a pretreated difficultly deformable metal plate (10);
opening a sealing cover (2), putting the pretreated easily deformable metal plate (4) into an upper layer material box (3), putting the pretreated difficultly deformable metal plate (10) into a lower layer material box (9), pushing the difficultly deformable metal plate (10) towards a lower roller (6) by using a lower push rod (13) until one end of the difficultly deformable metal plate (10) is completely contacted with the lower roller (6), and closing the sealing cover (2);
maintaining the lower push rod electrode (11) to be in contact with the difficult-to-deform metal plate (10), introducing argon into the lower layer material box (9) from the air inlet (12), and starting the power supply device (14) to introduce pulse current into the difficult-to-deform metal plate (10) so as to preheat the difficult-to-deform metal plate (10);
the rolling reduction and the rolling speed of the rollers are set, pulse current is kept to be introduced into the metal plate (10) which is difficult to deform, and the upper push rod (1) and the lower push rod (13) push the metal plate (4) which is easy to deform and the metal plate (10) which is difficult to deform into the upper roller (5) and the lower roller (6) at synchronous speed to roll the composite plate, so that the metal composite plate which is difficult to deform/deform is obtained.
3. The pulse current assisted warm rolling compounding method of claim 2, wherein: the elongation of the metal plate (10) which is difficult to deform after preheating is the same as that of the metal plate (4) which is easy to deform.
4. The pulse current assisted warm rolling compounding method of claim 2, wherein: the length of the easily deformable metal plate (4) is smaller than the length of the difficultly deformable metal plate (10).
5. The pulse current assisted warm rolling compounding method according to claim 2, characterized in that removing surface oxide layers and cleaning the surface of the ductile metallic plate (4) and the hard-to-deform metallic plate (10) comprises the steps of: polishing the easily deformable metal plates (4) and the difficultly deformable metal plates (10) by using fine sand paper, and wiping the polished metal plates with absolute ethyl alcohol or acetone.
6. The pulse current assisted warm rolling compounding method of claim 2, wherein:
the temperature of the easily deformable metal plate (4) in the upper layer material box is the same as the room temperature, the preheated temperature of the difficultly deformable metal plate (10) is 400-1200 ℃, and the distance between the easily deformable metal plate (4) and the difficultly deformable metal plate (10) is kept so as to avoid the heat transfer of the difficultly deformable metal plate (10) to the easily deformable metal plate (4) in the preheating process.
7. The pulse current assisted warm rolling compounding method of claim 2, wherein: the preheating temperature is the same as the rolling temperature of the metal plate (10) difficult to deform.
8. The pulse current assisted warm rolling compounding method of claim 2, wherein: in the rolling process of the composite plate, inert gas is continuously filled in the lower layer material box (9).
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| CN202210827742.6A CN115121608B (en) | 2022-07-13 | 2022-07-13 | Pulse current-assisted different-temperature rolling composite feeding device and composite method |
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| CN202210827742.6A CN115121608B (en) | 2022-07-13 | 2022-07-13 | Pulse current-assisted different-temperature rolling composite feeding device and composite method |
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| CN115121608B true CN115121608B (en) | 2023-05-26 |
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| CN102059250B (en) * | 2010-11-09 | 2012-07-04 | 燕山大学 | Electro-plastic two-roll mill of low-temperature liquid nitrogen cooling medium |
| CN108114981A (en) * | 2018-01-17 | 2018-06-05 | 云南民族大学 | Metal foil and the method for metallic plate multilayer materials pulse current auxiliary manufacture |
| CN108273847A (en) * | 2018-01-17 | 2018-07-13 | 云南民族大学 | A kind of method that the vacuum rolling of electric current auxiliary prepares composite metal plate |
| CN108339852A (en) * | 2018-02-10 | 2018-07-31 | 太原理工大学 | A kind of milling method applying pulse current on roll |
| CN108356075A (en) * | 2018-02-10 | 2018-08-03 | 太原理工大学 | A kind of milling method being applied to pulse current on composite metal plate |
| CN111054748B (en) * | 2019-12-18 | 2021-03-23 | 太原理工大学 | Preparation method of pulse current-assisted rolling difficult/easy-to-deform metal composite plate |
| CN112718862A (en) * | 2020-12-17 | 2021-04-30 | 太原理工大学 | Pulse current auxiliary rolling device and method for titanium and stainless steel variable-thickness composite plate |
| CN114798733A (en) * | 2022-06-30 | 2022-07-29 | 太原理工大学 | Current loading device for electrically-assisted rolling of three-layer metal composite plate and use method |
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Effective date of registration: 20231008 Address after: 044000 Chen Village, Jiangxian Economic and Technological Development Zone, Yuncheng City, Shanxi Province (within the state-owned Shanxi Stamping Factory) Patentee after: CITIC Electromechanical New Material Technology (Shanxi) Co.,Ltd. Address before: 230000 floor 1, building 2, phase I, e-commerce Park, Jinggang Road, Shushan Economic Development Zone, Hefei City, Anhui Province Patentee before: Dragon totem Technology (Hefei) Co.,Ltd. Effective date of registration: 20231008 Address after: 230000 floor 1, building 2, phase I, e-commerce Park, Jinggang Road, Shushan Economic Development Zone, Hefei City, Anhui Province Patentee after: Dragon totem Technology (Hefei) Co.,Ltd. Address before: 066004 No. 438 west section of Hebei Avenue, seaport District, Hebei, Qinhuangdao Patentee before: Yanshan University |