CN112874057A - Double-phase rolled copper-aluminum composite plate and preparation method thereof - Google Patents
Double-phase rolled copper-aluminum composite plate and preparation method thereof Download PDFInfo
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- CN112874057A CN112874057A CN202110030294.2A CN202110030294A CN112874057A CN 112874057 A CN112874057 A CN 112874057A CN 202110030294 A CN202110030294 A CN 202110030294A CN 112874057 A CN112874057 A CN 112874057A
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- Prior art keywords
- aluminum
- copper
- compounding
- phase
- rolling
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Links
- 239000002131 composite material Substances 0.000 title claims abstract description 58
- JRBRVDCKNXZZGH-UHFFFAOYSA-N alumane;copper Chemical compound [AlH3].[Cu] JRBRVDCKNXZZGH-UHFFFAOYSA-N 0.000 title claims abstract description 42
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- 238000005096 rolling process Methods 0.000 claims abstract description 65
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 57
- 229910052802 copper Inorganic materials 0.000 claims abstract description 57
- 239000010949 copper Substances 0.000 claims abstract description 57
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 42
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 42
- 239000007788 liquid Substances 0.000 claims abstract description 41
- 238000013329 compounding Methods 0.000 claims abstract description 39
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 25
- 238000004519 manufacturing process Methods 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 13
- 238000005266 casting Methods 0.000 claims description 11
- 238000004381 surface treatment Methods 0.000 claims description 7
- 238000011282 treatment Methods 0.000 claims description 7
- 238000005238 degreasing Methods 0.000 claims description 5
- 238000000227 grinding Methods 0.000 claims description 5
- 238000005422 blasting Methods 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 4
- 238000005488 sandblasting Methods 0.000 claims description 4
- 239000007787 solid Substances 0.000 abstract description 15
- 238000010438 heat treatment Methods 0.000 abstract description 4
- 238000010924 continuous production Methods 0.000 abstract description 3
- 230000007547 defect Effects 0.000 abstract description 2
- 238000005498 polishing Methods 0.000 description 6
- 150000001875 compounds Chemical class 0.000 description 4
- 238000009749 continuous casting Methods 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- WPPDFTBPZNZZRP-UHFFFAOYSA-N aluminum copper Chemical compound [Al].[Cu] WPPDFTBPZNZZRP-UHFFFAOYSA-N 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 238000010008 shearing Methods 0.000 description 3
- 238000003723 Smelting Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005253 cladding Methods 0.000 description 2
- -1 conductivity Chemical compound 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 241000784732 Lycaena phlaeas Species 0.000 description 1
- NEIHULKJZQTQKJ-UHFFFAOYSA-N [Cu].[Ag] Chemical compound [Cu].[Ag] NEIHULKJZQTQKJ-UHFFFAOYSA-N 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- JEMGLEPMXOIVNS-UHFFFAOYSA-N arsenic copper Chemical compound [Cu].[As] JEMGLEPMXOIVNS-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 229910052714 tellurium Inorganic materials 0.000 description 1
- PORWMNRCUJJQNO-UHFFFAOYSA-N tellurium atom Chemical compound [Te] PORWMNRCUJJQNO-UHFFFAOYSA-N 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/01—Layered products comprising a layer of metal all layers being exclusively metallic
- B32B15/017—Layered products comprising a layer of metal all layers being exclusively metallic one layer being formed of aluminium or an aluminium alloy, another layer being formed of an alloy based on a non ferrous metal other than aluminium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
- B22D11/0611—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars formed by a single casting wheel, e.g. for casting amorphous metal strips or wires
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/16—Casting in, on, or around objects which form part of the product for making compound objects cast of two or more different metals, e.g. for making rolls for rolling mills
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
The invention provides a two-phase rolled copper-aluminum composite plate and a preparation method thereof, belonging to the technical field of composite plate production. The preparation method comprises the following steps: and (3) performing double-phase rolling compounding on the copper plate strip and the aluminum liquid or the aluminum alloy liquid to obtain the double-phase rolled copper-aluminum composite plate. The invention directly carries out double-phase rolling compounding on the aluminum liquid or the aluminum alloy liquid and the copper plate strip, and the liquid state can more effectively utilize the elastic-plastic deformation mechanism and the energy matching relation of the bimetal in the copper-aluminum compounding process compared with the semisolid state, control the thickness and the tolerance between layers, avoid local defects and false compounding, improve the compounding rate and the compounding strength and obtain higher peeling strength. The aluminum liquid or the aluminum alloy liquid is directly subjected to double-phase rolling compounding with the copper plate strip without solidifying the aluminum liquid or the aluminum alloy liquid into a semi-solid state, so that continuous production can be realized; and the copper plate and the copper strip do not need to be preheated in advance before the two-phase rolling and compounding, so that the copper plate and the copper strip are prevented from being oxidized due to heating.
Description
Technical Field
The invention relates to the technical field of composite board production, in particular to a two-phase rolled copper-aluminum composite board and a preparation method thereof.
Background
Copper and aluminum are important nonferrous metals and are widely applied to the fields of industry, civil use and the like. The copper has good electric conduction, heat conduction, corrosion resistance and bacteriostasis performance; the aluminum has good electric conduction and heat conduction properties. The copper-aluminum composite board obtained by compounding copper and aluminum integrates the characteristics of copper such as conductivity, shielding performance, low density and large specific heat capacity of aluminum and the like.
At present, the production of copper-aluminum composite boards mainly adopts a solid-solid composite method. The copper-aluminum composite board produced by the solid-solid composite method is limited by processing conditions, the interface bonding strength of part of products can not reach the corresponding level of products produced by technologies such as explosive cladding, friction welding, two-phase cladding and the like, and the requirements of products such as battery components and the like can not be met.
In order to improve the interface strength of the copper-aluminum composite plate, Chinese patent with application number CN201010300694.2 discloses a production method of an aluminum-copper composite metal plate strip, wherein semi-solid aluminum or aluminum alloy and a solid copper plate strip are subjected to anaerobic continuous casting rolling to prepare the aluminum-copper composite metal plate strip, and the production method specifically comprises the following steps of standing an aluminum liquid at the temperature of 690-820 ℃ for 5-15 minutes, pouring the aluminum liquid into a preheated casting nozzle, and cooling and crystallizing the poured aluminum liquid into a semi-solid state; carrying out alkali washing and degreasing treatment on the copper plate strip, then carrying out single-side online polishing through a polishing roller until no oxide layer exists on the surface, and heating the copper plate strip to 230-250 ℃ online after polishing; and (3) contacting the semi-solid aluminum with the polished surface of the copper plate strip, and carrying out anaerobic continuous casting and rolling to obtain the aluminum-copper composite metal plate strip. The patent solidifies the aluminum liquid into a semi-solid state, and then carries out anaerobic cast rolling with a solid copper plate, and because the aluminum liquid is solidified into the semi-solid state, the method for obtaining the semi-solid aluminum by standing, cooling and pouring into a casting nozzle has low implementation efficiency, and the production continuity needs to be improved.
Disclosure of Invention
The invention aims to provide a two-phase rolled copper-aluminum composite plate and a preparation method thereof.
In order to achieve the above object, the present invention provides the following technical solutions:
the invention provides a preparation method of a two-phase rolled copper-aluminum composite plate, which comprises the following steps: and (3) performing double-phase rolling compounding on the copper plate strip and the aluminum liquid or the aluminum alloy liquid to obtain the double-phase rolled copper-aluminum composite plate.
Preferably, the temperature of the aluminum liquid or the aluminum alloy liquid is 680-770 ℃ during the double-phase rolling compounding.
Preferably, the copper plate strip is not preheated before the two-phase rolling compounding.
Preferably, the casting rolling area of the double-phase rolling composite is 45-110 mm.
Preferably, the thickness of the copper plate strip is 0.1-5.0 mm.
Preferably, the rolling pressure of the double-phase rolling composite is 600-3000 tons.
Preferably, the speed of the two-phase rolling compounding is 550-2050 mm/min.
Preferably, before the two-phase rolling and compounding, the surface treatment of the copper plate strip is further carried out; the surface treatment comprises one or more of mechanical grinding, laser cleaning, shot blasting, sand blasting or degreasing treatment.
The invention provides a two-phase rolled copper-aluminum composite board prepared by the preparation method in the scheme.
Preferably, the shearing strength between the copper plate strip and the aluminum plate strip in the two-phase rolled copper-aluminum composite plate or between the copper plate strip and the aluminum plate strip is more than or equal to 110 MPa.
The invention provides a preparation method of a two-phase rolled copper-aluminum composite plate, which comprises the following steps: and (3) performing double-phase rolling compounding on the copper plate strip and the aluminum liquid or the aluminum alloy liquid to obtain the double-phase rolled copper-aluminum composite plate. The invention directly carries out double-phase rolling compounding on the aluminum liquid or the aluminum alloy liquid and the copper plate strip, and the liquid state can more effectively utilize the elastic-plastic deformation mechanism and the energy matching relation of the bimetal in the copper-aluminum compounding process compared with the semisolid state, control the thickness and the tolerance between layers, avoid local defects and false compounding, improve the compounding rate and the compounding strength and obtain higher peeling strength.
The invention directly carries out double-phase rolling on the aluminum liquid or the aluminum alloy liquid and the copper plate strip without solidifying the aluminum liquid or the aluminum alloy liquid into a semi-solid state, thereby ensuring continuous production.
Furthermore, the copper plate strip does not need to be preheated before the double-phase rolling and compounding, on one hand, the copper plate strip can be prevented from being oxidized due to heating, so that the performance of the copper-aluminum composite plate is reduced, on the other hand, the process is optimized, and the prepared copper-aluminum composite plate is high in compounding rate and good in compounding strength.
The results of the embodiment show that the interface shear strength of the two-phase rolled copper-aluminum composite plate prepared by the invention is more than or equal to 110 MPa.
Detailed Description
The invention provides a preparation method of a two-phase rolled copper-aluminum composite plate, which comprises the following steps: and (3) performing double-phase rolling compounding on the copper plate strip and the aluminum liquid or the aluminum alloy liquid to obtain the double-phase rolled copper-aluminum composite plate.
The copper plate strip has no special requirements on the components of the copper plate strip, and can be selected according to actual requirements. In particular, the copper plate strip may be, but is not limited to: common copper (T1, T2, T3), oxygen-free copper (TU1, TU2 and high-purity, vacuum oxygen-free copper), deoxidized copper (TUP, TUMn), and special copper (arsenic copper, tellurium copper, silver copper) with small amount of alloying elements added.
In the invention, the thickness of the copper plate strip is preferably 0.1-5.0 mm, more preferably 0.5-4.5 mm, and even more preferably 0.8-4.5 mm.
In the invention, when the surface of the copper strip contains oil, the invention preferably further comprises surface treatment of the copper strip before the two-phase rolling compounding; the surface treatment preferably comprises one or more of mechanical grinding, laser cleaning, shot blasting, sand blasting or degreasing treatment. The invention has no special requirements on the processes of mechanical grinding, laser cleaning, shot blasting, sand blasting and degreasing treatment, and has no oil stain and passivation solution residue on the surface. In an embodiment of the invention, the mechanical grinding is belt polishing or brush roll polishing.
In the present invention, when the surface of the copper plate strip does not contain oil, the copper plate strip does not need surface treatment.
In the invention, aluminum or aluminum alloy is preferably smelted to obtain an aluminum source or aluminum alloy liquid. The invention has no special requirements on the smelting process, and the smelting process well known in the field can be adopted.
In the present invention, the aluminum alloy is preferably a 1xxx, 5xxx, 6xxx or 8xxx aluminum alloy. More preferably 1070, 1100, 5052, 6061, or 8011 aluminum alloy.
In the invention, the temperature of the aluminum liquid or the aluminum alloy liquid is preferably 680-770 ℃, more preferably 700-745 ℃, and further preferably 710-730 ℃ during the double-phase rolling compounding.
In the invention, before the double-phase rolling compounding, the copper plate and the copper strip are not preheated in advance and are kept in a normal temperature state.
The invention preferably bites the copper plate strip into a double-phase compound rolling mill, and then carries out double-phase rolling compound with aluminum liquid or aluminum alloy liquid.
In the invention, the casting rolling area of the double-phase rolling composite is preferably 45-110 mm, and more preferably 50-85 mm. The invention controls the size of the cast-rolling area within the range, is beneficial to better compounding between copper and aluminum, and improves the compounding strength.
In the invention, the rolling pressure of the double-phase rolling composite is preferably 800 to 3000 tons, more preferably 1000 to 2000 tons, and most preferably 1700 tons.
In the invention, the speed of the two-phase rolling compounding is preferably 550-2050 mm/min, more preferably 600-1350 mm/min, and even more preferably 650-1100 mm/min. The invention controls the speed of the double-phase rolling compounding within the range, is beneficial to effectively controlling the copper-aluminum compound synergistic deformation, improves the compound strength and obtains higher peel strength.
The dual-phase rolled copper-aluminum composite plate prepared by the invention can be subjected to a series of post-treatments according to actual requirements, wherein the post-treatments include but are not limited to annealing, cold rolling, rolling and thinning, and the like.
The invention provides a two-phase rolled copper-aluminum composite board prepared by the preparation method in the scheme. In the invention, the thickness of the double-phase rolled copper-aluminum composite plate is preferably 5-16 mm, more preferably 6-14 mm, and further preferably 7-10 mm.
The two-phase rolled copper-aluminum composite plate provided by the invention has high composite strength between the copper plate strip and the aluminum plate strip (or the aluminum alloy plate strip), and the shearing strength is more than or equal to 110MPa, so that the requirements of key materials of battery conversion parts (the required shearing strength is more than or equal to 60MPa) are met.
The dual-phase rolled composite plate and the method for manufacturing the same according to the present invention will be described in detail with reference to the following examples, which should not be construed as limiting the scope of the present invention.
Example 1
A production method of a two-phase rolled copper-aluminum composite plate comprises the following steps: performing double-phase rolling compounding on a T2 copper plate strip with the thickness of 0.9mm and 1100 aluminum alloy at 700 ℃, wherein a casting rolling area is 58-62 mm, the rolling pressure is 1700 tons, and the rolling speed is 1200mm/min to obtain the double-phase rolled copper-aluminum composite plate with the thickness of 8mm, and the interface shear strength is 122 MPa.
Example 2
A production method of a two-phase rolled copper-aluminum composite plate comprises the following steps: and (3) biting a polished T2 copper plate belt with the thickness of 3mm into a two-phase compound rolling mill, and carrying out two-phase rolling compounding with 1070 aluminum alloy at 710 ℃, wherein a casting and rolling area is 58-68 mm, the rolling pressure is 1750 tons, the rolling speed is 800mm/min, so as to obtain a 7.5 mm-thickness two-phase rolled copper-aluminum composite plate, and the interface shear strength is 118 MPa.
Example 3
A production method of a two-phase rolled copper-aluminum composite plate comprises the following steps: and (3) biting a 0.9 mm-thick T2 copper plate belt polished by an abrasive belt into a double-phase composite rolling mill, and carrying out double-phase rolling composite with 1050 aluminum alloy at 725 ℃, wherein a casting rolling area is 62-72 mm, the rolling pressure is 1600 tons, the rolling speed is 900mm/min, so as to obtain the 8 mm-thick double-phase rolled copper-aluminum composite plate, and the interface shear strength is 115 MPa.
Comparative example 1
The difference with embodiment 3 is that the copper-aluminum composite board is produced by adopting the method disclosed in chinese patent with application number CN201010300694.2, specifically: standing 1050 aluminum liquid at 750 ℃ for 15 minutes, then injecting the aluminum liquid into a preheated casting nozzle of an aluminum casting and rolling machine, cooling and crystallizing the cast aluminum liquid into a semi-solid state, and heating a T2 copper plate belt with the thickness of 0.9mm after polishing an abrasive belt to 250 ℃ on line; and (3) contacting semi-solid aluminum with the polished surface of the T2 copper plate strip, and carrying out anaerobic continuous casting and rolling, wherein the rolling speed during anaerobic continuous casting and rolling is 900mm/min, and the rolling pressure during casting and rolling is 1600 tons, so that the copper-aluminum composite plate strip is obtained, and the interface shear strength is 80 MPa.
As can be seen from the results of the example 3 and the comparative example 1, the invention adopts the two-phase rolling compounding, and the aluminum liquid is used for replacing the semi-solid aluminum, so that the obtained copper-aluminum composite board has improved composite strength, optimizes the production process and can realize continuous production.
Comparative example 2
The difference from the embodiment 3 is only the size of the cast-rolling area, the size of the cast-rolling area is 32-42 mm, and the interface shear strength of the obtained copper-aluminum composite plate is 50 MPa.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A preparation method of a two-phase rolled copper-aluminum composite plate comprises the following steps: and (3) performing double-phase rolling compounding on the copper plate strip and the aluminum liquid or the aluminum alloy liquid to obtain the double-phase rolled copper-aluminum composite plate.
2. The preparation method of claim 1, wherein the temperature of the molten aluminum or aluminum alloy liquid is 680-770 ℃ during the double-phase rolling compounding.
3. The method of claim 1, wherein the copper strip is not preheated prior to the duplex rolling and compounding.
4. The preparation method according to claim 1, wherein the casting area of the duplex rolling composite is 45-110 mm.
5. The manufacturing method according to claim 1, wherein the thickness of the copper strip is 0.1-5.0 mm.
6. The method according to claim 1, wherein the rolling pressure of the duplex rolling composite is 600 to 3000 tons.
7. The preparation method according to claim 1, wherein the speed of the duplex rolling compounding is 550-2050 mm/min.
8. The manufacturing method according to claim 1, further comprising, before the duplex rolling and compounding, subjecting the copper strip to surface treatment; the surface treatment comprises one or more of mechanical grinding, laser cleaning, shot blasting, sand blasting or degreasing treatment.
9. The double-phase rolled copper-aluminum composite board prepared by the preparation method of any one of claims 1 to 8.
10. The duplex rolled copper-aluminum composite plate according to claim 9, wherein the shear strength between the copper plate strip and the aluminum plate strip, or between the copper plate strip and the aluminum plate strip, in the duplex rolled copper-aluminum composite plate is not less than 110 MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110030294.2A CN112874057A (en) | 2021-01-11 | 2021-01-11 | Double-phase rolled copper-aluminum composite plate and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110030294.2A CN112874057A (en) | 2021-01-11 | 2021-01-11 | Double-phase rolled copper-aluminum composite plate and preparation method thereof |
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| CN112874057A true CN112874057A (en) | 2021-06-01 |
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| CN202110030294.2A Pending CN112874057A (en) | 2021-01-11 | 2021-01-11 | Double-phase rolled copper-aluminum composite plate and preparation method thereof |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103143565A (en) * | 2013-04-03 | 2013-06-12 | 郑州市合力铜业有限公司 | Production process of copper-aluminum bimetal composite plate |
| CN106670235A (en) * | 2016-12-30 | 2017-05-17 | 洛阳铜鑫复合材料科技有限公司 | Production method for copper-aluminum composite board strip and copper-aluminum composite board strip |
| CN111282991A (en) * | 2020-02-21 | 2020-06-16 | 洛阳铜一金属材料发展有限公司 | Preparation method of copper-aluminum composite plate strip with thick copper layer proportion |
-
2021
- 2021-01-11 CN CN202110030294.2A patent/CN112874057A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103143565A (en) * | 2013-04-03 | 2013-06-12 | 郑州市合力铜业有限公司 | Production process of copper-aluminum bimetal composite plate |
| CN106670235A (en) * | 2016-12-30 | 2017-05-17 | 洛阳铜鑫复合材料科技有限公司 | Production method for copper-aluminum composite board strip and copper-aluminum composite board strip |
| CN111282991A (en) * | 2020-02-21 | 2020-06-16 | 洛阳铜一金属材料发展有限公司 | Preparation method of copper-aluminum composite plate strip with thick copper layer proportion |
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