CN112439882A - Production line for continuous casting and rolling metal strip - Google Patents

Production line for continuous casting and rolling metal strip Download PDF

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Publication number
CN112439882A
CN112439882A CN201910808379.1A CN201910808379A CN112439882A CN 112439882 A CN112439882 A CN 112439882A CN 201910808379 A CN201910808379 A CN 201910808379A CN 112439882 A CN112439882 A CN 112439882A
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CN
China
Prior art keywords
metal
roller
belt
control
control roller
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Pending
Application number
CN201910808379.1A
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Chinese (zh)
Inventor
辛民昌
李长明
吴超
辛程勋
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Qingdao Jiuhuan Xinyue New Energy Technology Co ltd
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Qingdao Jiuhuan Xinyue New Energy Technology Co ltd
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Application filed by Qingdao Jiuhuan Xinyue New Energy Technology Co ltd filed Critical Qingdao Jiuhuan Xinyue New Energy Technology Co ltd
Priority to CN201910808379.1A priority Critical patent/CN112439882A/en
Priority to CN201911065266.3A priority patent/CN112439883B/en
Priority to PCT/CN2020/111980 priority patent/WO2021037182A1/en
Publication of CN112439882A publication Critical patent/CN112439882A/en
Pending legal-status Critical Current

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    • 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
    • B22D11/0628—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars formed by more than two casting wheels
    • 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
    • B22D11/0637—Accessories therefor
    • B22D11/0648—Casting surfaces
    • B22D11/0651—Casting wheels
    • 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
    • B22D11/0637—Accessories therefor
    • B22D11/0694—Accessories therefor for peeling-off or removing the cast product
    • 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
    • B22D11/16—Controlling or regulating processes or operations

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)

Abstract

The invention discloses a production line for continuously casting and rolling a metal strip, which comprises the following components: the conveying belt mechanism comprises a first conveying roller and a second conveying roller which are positioned at two ends, and a conveying belt is sleeved between the first conveying roller and the second conveying roller; the winding mechanism is used for winding the manufactured metal belt; the control roller set is arranged on the transmission belt mechanism and used for controlling the thickness of the metal belt, the control roller set comprises an upper control roller and a lower control roller, the upper control roller is located above the transmission belt, the lower control roller is located below the transmission belt, a feeding device used for adding liquid metal is arranged on the feeding side of the control roller set, a high-temperature area used for enabling the liquid metal to keep liquid and flowing is arranged on the feeding side of the control roller set, and a cooling area used for enabling the liquid metal to be cooled and shaped into the metal belt is arranged on the discharging side of the control roller. The production line for continuously casting and rolling the metal strip can accurately control the production thickness of the metal strip, namely the thickness of the metal strip can be thinner so as to meet the use requirements of scenes such as energy storage electrodes and the like.

Description

Production line for continuous casting and rolling metal strip
Technical Field
The invention relates to production equipment of metal strips, in particular to a production line for continuously casting and rolling metal strips.
Background
The negative electrode of the lithium ion battery is formed by uniformly coating a paste adhesive prepared by mixing a negative electrode active material carbon material or non-carbon material, a binder and an additive on two sides of a copper foil, drying and rolling. The key to successful production of lithium ion batteries is the ability to produce negative electrode materials that reversibly deintercalate/intercalate lithium ions. In general, the selection of a good anode material should follow the following principle: the specific energy is high; the electrode potential relative to the lithium electrode is low; the reversibility of charge-discharge reaction is good; the compatibility with electrolyte and binder is good; small specific surface area (<10m2(g) high true density>2.0g/cm3) (ii) a The size and the mechanical stability are good in the lithium embedding process; the resources are rich and the price is low; stable in air and has no toxic side effect. At present, the negative electrode material that has been practically used in lithium ion batteries is generally a carbon material such as graphite, soft carbon (e.g., coke, etc.), hard carbon, and the like. Although the traditional carbon material can meet the use requirements of the negative electrode of the lithium ion battery to a certain extent, the traditional carbon material has the defects of low energy density, heavy weight and the like.
The lithium metal has high capacity (theory 3860mAh/g) and low density (0.59 g/cm)3) Since the electrochemical potential is low (-3.04vvs. standard hydrogen electrode), a lithium metal secondary battery having a negative electrode made of lithium metal has superior performance in that the voltage is high and the energy density is high, compared with a lithium ion battery having a negative electrode made of graphite. In order to meet the requirement of high-rate discharge of the lithium battery, an ultrathin anode suitable for high-rate discharge is adopted, and therefore, a metal lithium cathode matched with the capacity of the anode is also ultrathin. However, commercially available battery-grade lithium metal is generally thicker, only a small number of manufacturers can provide lithium metal with the thickness of 50-100 μm and the width of 10-50mm, and the lithium metal has poor surface state, high difficulty in laminating with a conductive base material and low laminating strength.
The existing lithium belt production process generally adopts extrusion forming, for example, in the lithium belt production process disclosed in Chinese patent with publication numbers of CN204564801U and CN101497088B, the thinnest thickness can be dozens of microns. When a thicker metal lithium belt is applied to the metal lithium battery, the capacity of the negative electrode is far more than that of the positive electrode, so that the waste of the metal lithium of the negative electrode is caused, the volume and the weight of the battery are increased, the volume and the mass energy density of the battery are reduced, and the promotion of the limit energy density of the metal lithium battery is not facilitated. In addition, chinese patent publication No. CN105489845A proposes a PVD-based method for preparing a thin lithium metal-based negative electrode, which can prepare lithium metal with a relatively thin thickness, but the method cannot be applied to large-area mass production.
Disclosure of Invention
In view of the above, the present invention provides a production line for continuously casting and rolling a metal strip, which can precisely control the production thickness of the metal strip, that is, the thickness of the metal strip can be thinner so as to meet the use requirements of the energy storage electrode and other scenes.
In order to achieve the purpose, the invention provides the following technical scheme:
a production line for continuous casting and rolling of a metal strip, comprising:
the conveying belt mechanism comprises a first conveying roller and a second conveying roller which are positioned at two ends, and a conveying belt is sleeved between the first conveying roller and the second conveying roller;
the winding mechanism is used for winding the manufactured metal belt;
the device is characterized in that a control roller set used for controlling the thickness of the metal belt is arranged on the driving belt mechanism, the control roller set comprises an upper control roller positioned above the driving belt and a lower control roller positioned below the driving belt, a feeding device used for adding liquid metal is arranged on the feeding side of the control roller set, a high-temperature area used for enabling the liquid metal to keep liquid and flowing is arranged on the feeding side of the control roller set, and a cooling area used for enabling the liquid metal to be cooled and shaped into the metal belt is arranged on the discharging side of the control roller set.
Further, the highest point of the lower control roller is flush with the highest points of the first transmission roller and the second transmission roller, and the transmission belt is located on a horizontal plane; the roll gap between the upper control roll and the lower control roll in the vertical direction is equal to the sum of the thickness of the transmission belt and the preset thickness of the metal belt; and an overflow control plate is arranged on the feeding side of the control roller group, and the overflow height of the overflow control plate is flush with the lowest point of the upper control roller.
Further, the distance between the upper control roller and the first driving roller in the vertical direction is equal to the thickness of the driving belt; a press roller pressed on a transmission belt is arranged on the feeding side of the control roller group, the distance between the press roller and the lower control roller in the vertical direction is equal to the thickness of the transmission belt, and the roll gap between the upper control roller and the lower control roller in the vertical direction is equal to the sum of the thickness of the transmission belt and the preset thickness of the metal belt;
be equipped with the overflow ring groove on the compression roller, the degree of depth more than or equal to metal band of overflow ring groove predetermines thickness, feeding device adds liquid metal the compression roller with between the control roller set.
Further, the highest point of the first driving roller is higher than that of the second driving roller, and the difference between the height of the highest point of the first driving roller and the height of the highest point of the second driving roller is equal to the preset thickness of the metal belt.
Further, an overflow collecting groove for recovering overflowing liquid metal is arranged at the first transmission roller.
Further, a feeding roller is arranged on the feeding side of the control roller set, and at least one pushing brush or pushing paddle which is arranged along the axial direction of the feeding roller and used for pushing the liquid metal to the control roller set is arranged on the feeding roller.
Furthermore, the feeding side of the control roller group is also provided with at least one guide roller at intervals, and the guide rollers are used for enabling liquid metal to be uniformly distributed on the transmission belt along the width direction of the transmission belt.
Further, a first compound mechanism for compounding an anti-sticking film on at least one side surface of the metal belt is arranged between the winding mechanism and the transmission belt mechanism.
And the finishing roller group is arranged between the discharge side of the control roller group and the winding mechanism, and at least one group of finishing roller groups for finishing the metal strip cooled and shaped in the cooling area are arranged in the finishing area at intervals.
Further, a finishing temperature control device for controlling the finishing temperature is arranged in the finishing area.
Furthermore, the finishing area is arranged between the winding mechanism and the second transmission roller, and a second composite mechanism used for compositely supporting the film on at least one side surface of the metal belt is arranged between the second transmission roller and the finishing area.
Further, the metal material adopted by the metal belt adopts but is not limited to metal lithium, metal sodium, metal potassium, metal magnesium, metal calcium, metal zinc, metal aluminum or metal silver; or the metal material adopted by the metal belt is an alloy formed by matching at least two of metal lithium, metal sodium, metal potassium, metal magnesium, metal calcium, metal zinc, metal aluminum and metal silver.
Further, a stripper for stripping the metal belt from the transmission belt is arranged at the second transmission roller.
Further, the metal belt forming device comprises rib devices which are arranged on two sides of the conveyor belt and used for limiting the forming width of the metal belt.
Furthermore, the flange device comprises flange seats respectively positioned on two sides above the transmission belt, and the flange seats are provided with pressing strips which are in contact fit with the upper side surface of the transmission belt and used for limiting the flowing range of the liquid metal.
The invention has the beneficial effects that:
according to the production line for continuously casting and rolling the metal strip, the thickness of the liquid metal is controlled by the control roller set, the liquid metal moves to the cooling area on the discharging side of the control roller set under the combined action of the control roller set and the transmission belt, the metal strip is obtained after cooling and shaping in the cooling area, the thickness of the liquid metal can be controlled to be very thin due to high liquidity of the liquid metal, and when the composite metal strip is used as an energy storage electrode, the use requirement can be met.
Through setting up the finishing district, not only can the thickness of finishing strap and the surface accuracy of control strap, in the finishing process, through the control to the temperature, can effectively eliminate the internal stress in the strap moreover, improve the plasticity of strap, prevent defects such as crackle from appearing in the strap, improve product quality.
Drawings
In order to make the object, technical scheme and beneficial effect of the invention more clear, the invention provides the following drawings for explanation:
FIG. 1 is a schematic view of the structure of an embodiment 1 of the production line for continuous casting and rolling of a metal strip according to the invention;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
FIG. 3 is detail B of FIG. 2;
FIG. 4 is a schematic view of a production line for continuously casting and rolling a metal strip according to the present embodiment;
FIG. 5 is a schematic view of the structure of example 2 of the production line for continuous casting and rolling of a metal strip according to the invention;
FIG. 6 is a schematic view of a production line for continuously casting and rolling a metal strip according to the present embodiment;
fig. 7 is a schematic view of the structure of the press roll.
Description of reference numerals:
1-a metal strip; 2-supporting the film;
11-a first drive roller; 12-a second driving roller; 13-a transmission belt; 14-upper control roller; 15-lower control roller; 16-an overflow control panel; 16 a-an overflow; 17-a high temperature zone; 18-a cooling zone; 19-a roll stack; 20-a press roll; 21-an overflow ring groove; 22-a guide roller; 23-a flange seat; 24-pressing strips; 25-a stripper; 26-a bearing surface; 28-a feed roll;
30-a winding mechanism;
40-a finishing zone; 41-finishing roller group;
50-a second compound mechanism.
Detailed Description
The present invention is further described with reference to the following drawings and specific examples so that those skilled in the art can better understand the present invention and can practice the present invention, but the examples are not intended to limit the present invention.
Example 1
As shown in FIG. 1, a schematic view of the structure of example 1 of the production line for continuous casting and rolling of a metal strip according to the present invention is shown. The production line for continuously casting and rolling a metal strip of the present embodiment includes:
the conveying belt mechanism comprises a first conveying roller 11 and a second conveying roller 12 which are positioned at two ends, and a conveying belt 13 is sleeved between the first conveying roller 11 and the second conveying roller 12;
a winding mechanism 30 for winding the produced metal tape 1;
the control roller group is arranged on the transmission belt mechanism and used for controlling the thickness of the metal belt, the control roller group comprises an upper control roller 14 located above the transmission belt 13 and a lower control roller 15 located below the transmission belt 13, a feeding device used for adding liquid metal is arranged on the feeding side of the control roller group, a high-temperature area 17 used for enabling the liquid metal to keep liquid and flowing is arranged on the feeding side of the control roller group, and a cooling area 18 used for enabling the liquid metal to be cooled and shaped into the metal belt is arranged on the discharging side of the control roller group.
The production line of this embodiment continuous casting rolling strap utilizes the thickness of control roller set control liquid metal, and liquid metal removes to the cooling zone that is located control roller set ejection of compact side under the combined action of control roller set and drive belt, obtains the strap after the cooling zone cooling is stereotyped, because the mobility of liquid metal is high, therefore the thickness of liquid metal can be controlled very thinly, when using compound strap as the energy storage electrode, can satisfy the operation requirement.
Further, the highest point of the lower control roller 15 of the embodiment is flush with the highest points of the first driving roller 11 and the second driving roller 12, and the driving belt 13 is located on the horizontal plane; the vertical roll gap between the upper control roll 14 and the lower control roll 15 is equal to the sum of the thickness of the drive belt 13 and the preset thickness of the metal strip 1; the inlet side of the control roll group is provided with an overflow control plate 16, and the overflow height of the overflow control plate 16 is flush with the lowest point of the upper control roll 14. Specifically, the overflow control plate 16 is provided with an overflow port 16a, and the lowest point of the overflow port 16a is flush with the lowest point of the upper control roller 14, as shown in fig. 4. So, feeding device adds the liquid metal on the drive belt 13 between overflow control panel and the control roller set, by the circulation height of control roller set control liquid metal, and then the shaping thickness of control strap 1. In order to prevent the problem that the thickness of the liquid metal fluctuates greatly due to the excess liquid metal, the excess liquid metal is discharged through the overflow port 16a provided in the overflow control plate 16, so that the capacity of the liquid metal between the overflow control plate 16 and the control roll set is kept relatively stable, and the forming thickness of the metal strip 1 can be controlled more favorably.
Further, an overflow collecting groove for recovering the overflowing liquid metal is arranged at the position of the first transmission roller 11 and used for recovering the overflowing liquid metal, and the recovered liquid metal can be recycled.
Further, a feeding roller 28 is arranged on the feeding side of the control roller group, and at least one pushing brush or pushing paddle which is arranged along the axial direction of the feeding roller 28 and used for pushing the liquid metal to the control roller group is arranged on the feeding roller 28. Specifically, the feed rollers 28 are provided between the overflow control plate 16 and the control roller group for pushing the liquid metal so that the liquid metal always fills the gap between the upper control roller 14 and the belt 1, even if the metal strip 1 is formed with a more uniform thickness in the longitudinal direction.
Further, the feeding side of the control roller group is also provided with at least one guide roller 22 at intervals, which is used for enabling the liquid metal to be uniformly distributed on the transmission belt along the width direction of the transmission belt 13, so that the liquid metal can be uniformly distributed in the width direction of the transmission belt 13, and the forming thickness of the metal belt 1 in the width direction is more uniform.
Further, if the metal strip is directly wound after being cooled and formed in the cooling area 18, a first laminating mechanism for laminating an anti-sticking film on at least one side surface of the metal strip 1 may be provided between the winding mechanism 30 and the belt mechanism to prevent adjacent two metal strips from sticking together after winding. The production line for continuously casting and rolling the metal strip further comprises a finishing area 40 arranged between the discharging side of the control roller group and the winding mechanism, and at least one finishing roller group 41 for finishing the metal strip 1 cooled and shaped in the cooling area is arranged in the finishing area 40 at intervals. Preferably, a finishing temperature control device for controlling the finishing temperature is arranged in the finishing area. Specifically, the finishing section 40 of the present embodiment is disposed between the winding mechanism 30 and the second driving roller 12, and a second combining mechanism 50 for compositely supporting the film 2 on at least one side of the metal belt 1 is disposed between the second driving roller 12 and the finishing section 40. The metal belt 1 is prevented from being broken due to the fact that the supporting film 2 is compounded on the side face of the metal belt 1, and the supporting film 2 is used for bearing tension. Through setting up the finishing district, not only can the thickness of finishing strap and the surface accuracy of control strap, in the finishing process, through the control to the temperature, can effectively eliminate the internal stress in the strap moreover, improve the plasticity of strap, prevent defects such as crackle from appearing in the strap, improve product quality
Further, the metal material adopted by the metal strip 1 adopts, but is not limited to, metal lithium, metal sodium, metal potassium, metal magnesium, metal calcium, metal zinc, metal aluminum or metal silver; or the metal material adopted by the metal belt 1 adopts an alloy formed by at least two of metal lithium, metal sodium, metal potassium, metal magnesium, metal calcium, metal zinc, metal aluminum and metal silver according to a ratio. That is, the metal material selected in this embodiment can be used as the active material of the energy storage electrode, that is, the composite metal strip of this embodiment can be used as the energy storage electrode, and the metal strip 1 of this embodiment is preferably made of lithium metal.
Further, a stripper 25 for stripping the metal belt 1 from the transmission belt 13 is arranged at the second transmission roller 12, and is used for assisting in stripping the metal belt 1 from the transmission belt 13 and preventing the metal belt 1 from breaking, and a bearing surface 26 for bearing the metal belt 1 between the second transmission roller 12 and the first compound mechanism or the second compound mechanism is arranged on the stripper 25, so as to further prevent the metal belt 1 from being pulled apart under the action of gravity.
Further, the production line for continuously casting and rolling a metal strip of the present embodiment further includes a rib device provided on both sides of the conveyor belt 13 and defining the forming width of the metal strip 1. The flange device of the embodiment comprises flange seats 23 respectively positioned at two sides above the conveying belt, and the flange seats 23 are provided with press strips 24 which are used for being in contact fit with the upper side surface of the conveying belt and limiting the flowing range of the liquid metal. The batten 24 is made of high-temperature-resistant and soft material, and the friction resistance between the batten and the transmission belt 13 is small; depending on the metal material, the bead 24 also needs to have the property of not adhering to the metal material, which will not be described again.
The following describes in detail a specific embodiment of the method for producing a continuously cast-rolled composite metal strip according to the present embodiment, with reference to the metal strip rolling line described above.
In the method for producing a continuously cast and rolled metal strip of the present embodiment, the liquid metal is fed to the feed side of the control roll group, the liquid metal is kept in a liquid state and in a fluid state by the high temperature zone 17 provided on the feed side of the control roll group, the forming thickness of the liquid metal is controlled by the control roll group, and the liquid metal on the belt 13 is cooled and formed into the metal strip 1 by the cooling zone 18 provided on the discharge side of the control roll group.
Further, the distance in the vertical direction between the upper control roller 14 and the lower control roller 15 is set equal to the sum of the thickness of the belt 13 and the preset thickness of the metal strip 1; setting the highest point of the lower control roller to be flush with the highest points of the first transmission roller 11 and the second transmission roller 12, and enabling the transmission belt 13 to be located on the horizontal plane; and arranging an overflow control plate 16 on the feeding side of the control roller group, enabling the overflow height of the overflow control plate 16 to be flush with the lowest point of the upper control roller, recovering the overflowing liquid metal at the first driving roller by using an overflow receiving groove, and recycling the recovered liquid metal. Specifically, the overflow control plate 16 is provided with an overflow port 16a, and the lowest point of the overflow port 16a is flush with the lowest point of the upper control roller 14, as shown in fig. 4. So, feeding device adds the liquid metal on the drive belt 13 between overflow control panel and the control roller set, by the circulation height of control roller set control liquid metal, and then the shaping thickness of control strap 1. In order to prevent the problem that the thickness of the liquid metal fluctuates greatly due to the excess liquid metal, the excess liquid metal is discharged through the overflow port 16a provided in the overflow control plate 16, so that the capacity of the liquid metal between the overflow control plate 16 and the control roll set is kept relatively stable, and the forming thickness of the metal strip 1 can be controlled more favorably.
Further, a feeding roller 28 is arranged on the feeding side of the control roller group, and at least one pushing brush or pushing paddle which is arranged along the axial direction of the feeding roller 28 and used for pushing the liquid metal to the control roller group is arranged on the feeding roller, so that the gap between the upper control roller 14 and the transmission belt 13 is filled with the liquid metal. Specifically, the feed rollers 28 are provided between the overflow control plate 16 and the control roller group for pushing the liquid metal so that the liquid metal always fills the gap between the upper control roller 14 and the belt 1, even if the metal strip 1 is formed with a more uniform thickness in the longitudinal direction.
Further, at least one guide roller 22 is arranged on the feeding side of the control roller group at intervals, and the liquid metal is uniformly distributed on the transmission belt 13 along the width direction of the transmission belt 13 by the guide rollers 22, so that the liquid metal is uniformly distributed in the width direction of the transmission belt 13, and the forming thickness of the metal belt 1 in the width direction is more uniform.
Further, if the metal strip is directly rolled after being cooled and formed in the cooling area 18, an anti-sticking film for preventing two adjacent metal strips from sticking together may be laminated on at least one side of the metal strip 1 before the metal strip 1 is rolled, so as to prevent two adjacent metal strips from sticking together after being rolled. In the embodiment, after the metal strip is cooled and formed, the metal strip is further finished, and the metal strip 1 is finished by using at least one finishing roller group 41 which is arranged at intervals, so that the thickness and the surface precision of the metal strip 1 reach set ranges. During the finishing process, the finishing temperature is controlled to maintain the metal strip within a temperature range that facilitates its finishing. The finishing can control the thickness of the metal belt and the surface precision of the metal belt, and in the finishing process, the internal stress in the metal belt can be effectively eliminated through controlling the temperature, the plasticity of the metal belt is improved, the defects of cracks and the like in the metal belt are prevented, and the product quality is improved. Preferably, when the metal strip 1 is stripped from the transmission belt and then the metal strip 1 is finished, after the metal strip is stripped from the transmission belt and before the metal strip is finished, a supporting film 2 for supporting the metal strip is compounded on at least one side surface of the metal strip 1, and the supporting film 2 is used for bearing the tensile force and preventing the metal strip 1 from being pulled apart due to the thinner thickness.
Further, the metal material adopted by the metal strip 1 adopts, but is not limited to, metal lithium, metal sodium, metal potassium, metal magnesium, metal calcium, metal zinc, metal aluminum or metal silver; or the metal material adopted by the metal belt is an alloy formed by matching at least two of metal lithium, metal sodium, metal potassium, metal magnesium, metal calcium, metal zinc, metal aluminum and metal silver. That is, the metal material selected in this embodiment can be used as the active material of the energy storage electrode, that is, the composite metal strip of this embodiment can be used as the energy storage electrode, and the metal strip 1 of this embodiment is preferably made of lithium metal.
Further, the metal belt 1 is peeled off from the belt 13 by the peeler 25 to prevent the metal belt 1 from being broken, and the peeler 25 is provided with a support surface 26 for supporting the metal belt 1 between the second driving roller 12 and the first composite mechanism or the second composite mechanism, thereby further preventing the metal belt 1 from being pulled apart by gravity.
Further, on both sides of the belt 13, rib means for defining the forming width of the metal strip are provided, respectively. The flange device of the embodiment comprises flange seats 23 respectively positioned at two sides above the conveying belt, and the flange seats 23 are provided with press strips 24 which are used for being in contact fit with the upper side surface of the conveying belt and limiting the flowing range of the liquid metal. The batten 24 is made of high-temperature-resistant and soft material, and the friction resistance between the batten and the transmission belt 13 is small; depending on the metal material, the bead 24 also needs to have the property of not adhering to the metal material, which will not be described again.
Example 2
As shown in FIG. 5, a schematic view of the structure of example 2 of the production line for continuous casting and rolling of a metal strip according to the present invention is shown. The production line for continuously casting and rolling a metal strip of the present embodiment includes:
the conveying belt mechanism comprises a first conveying roller 11 and a second conveying roller 12 which are positioned at two ends, and a conveying belt 13 is sleeved between the first conveying roller 11 and the second conveying roller 12;
a winding mechanism 30 for winding the produced metal tape 1;
the control roller group is arranged on the transmission belt mechanism and used for controlling the thickness of the metal belt, the control roller group comprises an upper control roller 14 located above the transmission belt 13 and a lower control roller 15 located below the transmission belt 13, a feeding device used for adding liquid metal is arranged on the feeding side of the control roller group, a high-temperature area 17 used for enabling the liquid metal to keep liquid and flowing is arranged on the feeding side of the control roller group, and a cooling area 18 used for enabling the liquid metal to be cooled and shaped into the metal belt is arranged on the discharging side of the control roller group.
The production line of this embodiment continuous casting rolling strap utilizes the thickness of control roller set control liquid metal, and liquid metal removes to the cooling zone that is located control roller set ejection of compact side under the combined action of control roller set and drive belt, obtains the strap after the cooling zone cooling is stereotyped, because the mobility of liquid metal is high, therefore the thickness of liquid metal can be controlled very thinly, when using compound strap as the energy storage electrode, can satisfy the operation requirement.
The interval between the upper control roller 14 and the first drive roller 11 in the vertical direction of the present embodiment is equal to the thickness of the drive belt 13; the feeding side of the control roller group is provided with a press roller 20 pressed on the transmission belt 13, the distance between the press roller 20 and the lower control roller 15 in the vertical direction is equal to the thickness of the transmission belt 13, and the roll gap between the upper control roller 14 and the lower control roller 15 in the vertical direction is equal to the sum of the thickness of the transmission belt 13 and the preset thickness of the metal belt 1. The press roll 20 of the embodiment is provided with the overflow ring groove 21, the depth of the overflow ring groove 21 is more than or equal to the preset thickness of the metal belt 1, and the feeding device feeds the liquid metal between the press roll 20 and the control roll set. Thus, the problem that the thickness of the liquid metal fluctuates greatly due to excessive liquid metal can be prevented, the excess liquid metal is discharged by the overflow ring groove 21 arranged on the press roll 20, the capacity of the liquid metal between the press roll 20 and the control roll set is kept relatively stable, and the forming thickness of the metal belt 1 can be controlled better. Preferably, the relief ring grooves 21 are provided at intervals in the axial direction on the press roll 20. Preferably, the highest point of the first driving roller 11 is higher than the highest point of the second driving roller 12, and the difference between the height of the highest point of the first driving roller 11 and the height of the highest point of the second driving roller 12 is equal to the preset thickness of the metal strip 1, so that the driving belt 13 on the downstream side of the press roller 20 can be always kept horizontal, and the forming control of the metal strip 1 is facilitated.
Other embodiments of the present embodiment are the same as embodiment 1, and are not described in detail.
The following describes in detail a specific embodiment of the method for producing a continuously cast-rolled composite metal strip according to the present embodiment, with reference to the metal strip rolling line described above.
In the method for producing a continuously cast and rolled metal strip of the present embodiment, the liquid metal is fed to the feed side of the control roll group, the liquid metal is kept in a liquid state and in a fluid state by the high temperature zone 17 provided on the feed side of the control roll group, the forming thickness of the liquid metal is controlled by the control roll group, and the liquid metal on the belt 13 is cooled and formed into the metal strip 1 by the cooling zone 18 provided on the discharge side of the control roll group.
Further, the roll gap in the vertical direction between the upper control roller 14 and the first driving roller 11 is set equal to the thickness of the driving belt 13; arranging a press roll 20 pressed on the transmission belt at the feeding side of the control roll group, setting the distance between the press roll 20 and the lower control roll 15 in the vertical direction to be equal to the thickness of the transmission belt 13, and setting the roll gap between the upper control roll 14 and the lower control roll 15 in the vertical direction to be equal to the sum of the thickness of the transmission belt 13 and the preset thickness of the metal belt 1; an overflow groove 21 is formed in the press roll 20, the depth of the overflow groove 21 is set to be greater than or equal to the preset thickness of the metal strip 1, and the feeding device feeds the liquid metal between the press roll 20 and the control roll set. Thus, the problem that the thickness of the liquid metal fluctuates greatly due to excessive liquid metal can be prevented, the excess liquid metal is discharged by the overflow ring groove 21 arranged on the press roll 20, the capacity of the liquid metal between the press roll 20 and the control roll set is kept relatively stable, and the forming thickness of the metal belt 1 can be controlled better. Preferably, the relief ring grooves 21 are provided at intervals in the axial direction on the press roll 20. Preferably, the highest point of the first driving roller 11 is higher than the highest point of the second driving roller 12, and the difference between the height of the highest point of the first driving roller 11 and the height of the highest point of the second driving roller 12 is equal to the preset thickness of the metal strip 1, so that the driving belt 13 on the downstream side of the press roller 20 can be always kept horizontal, and the forming control of the metal strip 1 is facilitated.
Other embodiments of the method for producing a continuously cast-rolled metal strip according to the present example are the same as those of example 1, and will not be described in detail.
Note: the term "liquid metal" as used herein refers to a molten metal having a fluidity that meets a set requirement or a liquid metal having a temperature that exceeds the boiling point of the metal material, and will not be described again.
The preset thickness of the metal strip is a thickness value after considering thermal expansion and cold contraction, namely the forming thickness of the metal strip meets the following requirements: where H is the forming thickness of the metal strip, H is the "preset thickness of the metal strip" and δ is the thermal expansion and contraction rate of the metal material.
In the process of producing the composite metal strip, according to different material selections of the strip and the metal material used for forming the metal strip, corresponding atmosphere environments need to be adopted, and the environment settings can be adjusted and selected according to the strip and the metal material under the set temperature and dryness environments.
The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. The equivalent substitution or change made by the technical personnel in the technical field on the basis of the invention is all within the protection scope of the invention. The protection scope of the invention is subject to the claims.

Claims (15)

1. A production line for continuous casting and rolling of a metal strip, characterized in that: the method comprises the following steps:
the conveying belt mechanism comprises a first conveying roller and a second conveying roller which are positioned at two ends, and a conveying belt is sleeved between the first conveying roller and the second conveying roller;
the winding mechanism is used for winding the manufactured metal belt;
the device is characterized in that a control roller set used for controlling the thickness of the metal belt is arranged on the driving belt mechanism, the control roller set comprises an upper control roller positioned above the driving belt and a lower control roller positioned below the driving belt, a feeding device used for adding liquid metal is arranged on the feeding side of the control roller set, a high-temperature area used for enabling the liquid metal to keep liquid and flowing is arranged on the feeding side of the control roller set, and a cooling area used for enabling the liquid metal to be cooled and shaped into the metal belt is arranged on the discharging side of the control roller set.
2. The production line for continuously casting-rolling a metal strip as claimed in claim 1, characterized in that: the highest point of the lower control roller is flush with the highest points of the first transmission roller and the second transmission roller, and the transmission belt is positioned on a horizontal plane; the roll gap between the upper control roll and the lower control roll in the vertical direction is equal to the sum of the thickness of the transmission belt and the preset thickness of the metal belt; and an overflow control plate is arranged on the feeding side of the control roller group, and the overflow height of the overflow control plate is flush with the lowest point of the upper control roller.
3. The production line for continuously casting-rolling a metal strip as claimed in claim 1, characterized in that: the distance between the upper control roller and the first transmission roller in the vertical direction is equal to the thickness of the transmission belt; a press roller pressed on a transmission belt is arranged on the feeding side of the control roller group, the distance between the press roller and the lower control roller in the vertical direction is equal to the thickness of the transmission belt, and the roll gap between the upper control roller and the lower control roller in the vertical direction is equal to the sum of the thickness of the transmission belt and the preset thickness of the metal belt;
be equipped with the overflow ring groove on the compression roller, the degree of depth more than or equal to metal band of overflow ring groove predetermines thickness, feeding device adds liquid metal the compression roller with between the control roller set.
4. A production line for continuously casting-rolling a metal strip according to claim 3, characterized in that: the highest point of the first driving roller is higher than that of the second driving roller, and the difference between the height of the highest point of the first driving roller and the height of the highest point of the second driving roller is equal to the preset thickness of the metal belt.
5. A production line for continuous casting-rolling a metal strip according to any one of claims 2 to 4, characterized in that: and an overflow receiving groove for recovering overflowing liquid metal is arranged at the first transmission roller.
6. The production line for continuously casting-rolling a metal strip as claimed in claim 1, characterized in that: and the feeding side of the control roller set is provided with a feeding roller, and the feeding roller is provided with at least one pushing brush or pushing paddle which is arranged along the axial direction of the feeding roller and used for pushing the liquid metal to the control roller set.
7. The production line for continuously casting-rolling a metal strip as claimed in claim 1, characterized in that: and at least one guide roller for uniformly distributing liquid metal on the transmission belt along the width direction of the transmission belt is arranged at intervals on the feeding side of the control roller group.
8. The production line for continuously casting-rolling a metal strip as claimed in claim 1, characterized in that: and a first compound mechanism for compounding an anti-sticking film on at least one side surface of the metal belt is arranged between the winding mechanism and the transmission belt mechanism.
9. The production line for continuously casting-rolling a metal strip as claimed in claim 1, characterized in that: still including setting up control roller set ejection of compact side with finishing district between the winding mechanism, the interval is equipped with at least one set ofly and is used for the finishing warp in the finishing district the cooling zone cooling is stereotyped the finishing roller set of strap.
10. The continuous casting-rolling metal strip production line of claim 9, characterized in that: and a finishing temperature control device for controlling the finishing temperature is arranged in the finishing area.
11. The continuous casting-rolling metal strip production line of claim 9, characterized in that: the finishing area sets up the winding mechanism with between the second driving roller, just the second driving roller with be equipped with between the finishing area and be used for on at least one side of strap compound bearing film's second combined mechanism.
12. The production line for continuously casting-rolling a metal strip as claimed in claim 1, characterized in that: the metal material adopted by the metal belt adopts but not limited to metal lithium, metal sodium, metal potassium, metal magnesium, metal calcium, metal zinc, metal aluminum or metal silver; or the metal material adopted by the metal belt is an alloy formed by matching at least two of metal lithium, metal sodium, metal potassium, metal magnesium, metal calcium, metal zinc, metal aluminum and metal silver.
13. The production line for continuously casting-rolling a metal strip as claimed in claim 1, characterized in that: and a stripper for stripping the metal belt from the transmission belt is arranged at the second transmission roller.
14. A production line for continuous casting-rolling of a metal strip according to any one of claims 1 to 4,6 to 13, characterized in that: and the device also comprises edge blocking devices which are arranged at two sides of the conveyor belt and used for limiting the forming width of the metal belt.
15. The production line for continuously casting-rolling a metal strip as claimed in claim 14, wherein: the flange device comprises flange seats respectively positioned on two sides above the transmission belt, and the flange seats are provided with press strips which are in contact fit with the upper side surface of the transmission belt and used for limiting the flowing range of the liquid metal.
CN201910808379.1A 2019-08-29 2019-08-29 Production line for continuous casting and rolling metal strip Pending CN112439882A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201910808379.1A CN112439882A (en) 2019-08-29 2019-08-29 Production line for continuous casting and rolling metal strip
CN201911065266.3A CN112439883B (en) 2019-08-29 2019-08-29 Method for producing continuous casting rolling metal belt
PCT/CN2020/111980 WO2021037182A1 (en) 2019-08-29 2020-08-28 Production lines and production methods for continuously casting and rolling metal strap and composite metal strap

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910808379.1A CN112439882A (en) 2019-08-29 2019-08-29 Production line for continuous casting and rolling metal strip

Related Child Applications (1)

Application Number Title Priority Date Filing Date
CN201911065266.3A Division CN112439883B (en) 2019-08-29 2019-08-29 Method for producing continuous casting rolling metal belt

Publications (1)

Publication Number Publication Date
CN112439882A true CN112439882A (en) 2021-03-05

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910808379.1A Pending CN112439882A (en) 2019-08-29 2019-08-29 Production line for continuous casting and rolling metal strip

Country Status (1)

Country Link
CN (1) CN112439882A (en)

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