CN219309674U - Roller for rolling metal lithium material strip - Google Patents
Roller for rolling metal lithium material strip Download PDFInfo
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- CN219309674U CN219309674U CN202320364166.6U CN202320364166U CN219309674U CN 219309674 U CN219309674 U CN 219309674U CN 202320364166 U CN202320364166 U CN 202320364166U CN 219309674 U CN219309674 U CN 219309674U
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02E60/10—Energy storage using batteries
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Abstract
The utility model relates to the field of metal processing, and discloses a roller for rolling a metal lithium material strip. The high-speed rolling mill comprises a mill body, wherein the mill body is a cylindrical structural member and consists of a first rolling area, a second rolling area and a third rolling area, the first rolling area, the second rolling area and the third rolling area are sequentially and fixedly connected to form the mill body, and the rolling surface of the first rolling area and the rolling surface of the third rolling area are smooth surfaces. The smooth surface reduces the friction between the roller and the edge of the metal lithium material strip, reduces the damage of the metal lithium material strip to the roller, and prolongs the service life of the roller; the smooth surface is uniformly contacted with the edge of the metal lithium material strip during rolling, the edge of the metal lithium material strip is uniformly compressed downwards by equal ratio under the rolling force and uniformly extended, the uniformity of the thickness of the edge of the metal lithium material strip is improved, edge cracks are not easy to occur, and the edge crack phenomenon during rolling of the metal lithium material strip is improved; the damage of sharp objects generated by edge cracks to the roller is reduced, and the service life of the roller is prolonged.
Description
Technical Field
The utility model relates to the field of metal processing, in particular to a roller for rolling a metal lithium material belt.
Background
The energy density of the current lithium ion battery almost reaches the theoretical limit, and the next generation of high-energy density solid lithium metal battery gradually reaches the market in order to meet the requirement of long endurance mileage of new energy automobiles. Metallic lithium anodes have also attracted increasing attention and importance in the industry as a key material for the negative side of solid state battery systems. Compared with the existing graphite system anode material, the unit area capacity of the metal lithium belt with the diameter of 20 mu m can exceed that of the existing system. Therefore, development of an ultra-thin lithium band of 20 μm class has affected commercialization of solid-state lithium ion batteries to some extent. The current production modes of the ultrathin lithium belt mainly comprise an electrodeposition method, a vacuum physical deposition method, a melt coating method, a mechanical rolling method and the like. However, the former three are not preferable from the viewpoint of efficiency and energy consumption. The mechanical rolling method has the advantages of high efficiency, low energy consumption and the like, and is therefore sought after.
The patent document disclosed above proposes to use a four-roller mechanical rolling mode, and the ultra-thin metallic lithium belt can be obtained by using a matched anti-sticking agent. However, it is known that the metal rolling industry commonly has the phenomenon of edge cracking of a rolled metal strip, and the lithium strip is particularly serious in the rolling process due to the characteristics of low density, low strength and the like. In addition, the edges of the lithium strips are enriched with substances such as oxides and nitrides, and the substances form sharp objects along with edge cracking of the lithium strips after the lithium strips are rolled, and the sharp objects seriously abrade the roller to cause the roller damage to be aggravated, so that the service life of the roller is greatly reduced, and the production cost is increased. However, the above patents are all focused on the rolling production process and production line of the metal lithium strip, the edge cracking phenomenon is serious, the problem of roller abrasion is not effectively improved, and particularly, the roller is not researched and improved correspondingly as a key component in direct contact with the metal lithium in the rolling process.
Disclosure of Invention
The utility model provides a roller for rolling a metal lithium material belt, which aims to effectively solve the problem of edge cracking in the rolling process of the metal lithium material belt and prolong the service life of the roller.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model discloses a roller for rolling a metal lithium material belt, which comprises a roller body, wherein the roller body is a cylindrical structural member and consists of a first rolling area, a second rolling area and a third rolling area, the first rolling area, the second rolling area and the third rolling area are sequentially and fixedly connected to form the roller body, and the rolling surfaces of the first rolling area and the third rolling area are smooth surfaces.
Further, the roughness of the rolling surface of the first rolling zone is Ra1, and the roughness of the rolling surface of the third rolling zone is Ra3, ra1 is less than 0.1 μm, and Ra3 is less than 0.1 μm.
Further, the rolling surfaces of the first rolling area and the third rolling area are processed into smooth surfaces by mechanical polishing or laser etching.
Further, the roughness of the rolling surface of the second rolling zone is Ra2, and Ra2 is more than or equal to 0.1 mu m and less than or equal to 1.0 mu m.
Further, the roughness of the rolling surface of the second rolling zone is 0.4 μm or less and Ra2 or less and 0.8 μm or less.
Further, the roll diameter of the roll body is D, the thickness of the roll body is not more than 50 mm and not more than 200 mm, the width of the roll body is L, the thickness of the roll body is not less than 100mm and not more than 600mm, and the width of the second rolling area is L1, and the thickness of the roll body is not less than 50 mm and not more than 400 mm.
Further, the cylindricity of the second rolling area and the first rolling area is a1, the cylindricity of the second rolling area and the third rolling area is a2, a1 is less than or equal to 3 mu m, and a2 is less than or equal to 3 mu m.
Further, the coaxiality of the second rolling area and the first rolling area is b1, and the coaxiality of the second rolling area and the third rolling area is b2, wherein b1 is less than or equal to 3 mu m, and b2 is less than or equal to 3 mu m.
Further, the rolling surfaces of the second rolling zone, the first rolling zone and the third rolling zone are all provided with protective layers.
Further, the roller for rolling the lithium metal material strip further comprises a first roller neck, a second roller neck, a first roller head and a second roller head, wherein the first roller head, the first roller neck, the first rolling area, the second rolling area, the third rolling area, the second roller neck and the second roller head are sequentially and fixedly connected to form the roller, and the roller is a structural member made of stainless steel or tungsten steel.
The beneficial effects of the utility model are as follows: according to the roller for rolling the metal lithium material belt, the roller body of the roller is divided into the first rolling area, the second rolling area and the third rolling area, the first rolling area and the third rolling area are positioned at the edge positions of the roller body, the rolling surfaces of the first rolling area and the third rolling area are set to be smooth surfaces, a worker uses the rolling mill to roll the metal lithium material belt, under the action of friction force generated between the rolling surfaces of the second rolling area and the metal lithium material belt in the rolling process of the metal lithium material belt, the gap between the roller bodies of the rollers rotates in pairs, the two edges of the metal lithium material belt pass through the first rolling area and the third rolling area, the rolling surfaces of which are smooth surfaces are respectively, the roughness of the smooth surfaces is small, the friction force generated between the two edges of the metal lithium material belt is small, and the passing performance is good, so that the edge crack of the metal lithium material belt is difficult to generate, and the edge crack problem of the metal lithium material belt is solved; the roughness of the smooth surface is small, the friction force generated by the edges of the metal lithium material belt is small, the friction force born by the two edges of the metal lithium material belt is negligible relative to the rolling force, the vector sum of the friction force born by the two edges of the metal lithium material belt and the rolling force is the same as the rolling force, so that the edges of the metal lithium material belt only bear downward force, the smooth surface is fully contacted and rolled with the edges of the metal lithium material belt, the edges of the metal lithium material belt are uniformly stressed downwards and compressed in equal ratio to uniformly spread the metal lithium material belt, the thickness consistency of the edges of the metal lithium material belt is improved, edge cracks are not easily generated on the edges of the metal lithium material belt, and the problem of edge cracks in the rolling process of the metal lithium material belt is effectively solved; the improvement of the edge crack phenomenon of the metal lithium material strip reduces the scratch of sharp objects generated by the edge crack metal lithium material strip on the roll body of the roll, reduces the damage to the roll caused by the edge crack, and further prolongs the service life of the roll; meanwhile, the rolling surfaces of the first rolling area and the second rolling area reduce friction force among the rolling surfaces of the first rolling area, the second rolling area and the edges of the metal lithium material strips through the arrangement of the smooth surfaces, so that abrasion of the metal lithium material strips to the roller in the rolling process is reduced, and the service life of the roller is further prolonged.
Drawings
FIG. 1 is a schematic perspective view of the present utility model;
FIG. 2 is a front view of the present utility model;
FIG. 3 is a schematic illustration of edge cracking of a metallic lithium material strip in an embodiment;
FIG. 4 is a graph of broken line statistics of roughness change in an embodiment.
Reference numerals: the rolling mill comprises a first roll head 1, a first roll neck 2, a first rolling zone 3, a second rolling zone 4, a third rolling zone 5, a second roll neck 6, a second roll head 7 and edge cracks 8.
Detailed Description
The utility model will be further described with reference to the drawings and examples.
As shown in fig. 1, 2, 3 and 4, the roller for rolling the lithium metal material strip comprises a roller body, wherein the roller body is a cylindrical structural member and consists of a first rolling area 3, a second rolling area 4 and a third rolling area 5, the first rolling area 3, the second rolling area 4 and the third rolling area 5 are sequentially and fixedly connected in a straight line shape to form the roller body, the first rolling area 3, the second rolling area 4 and the third rolling area 5 are coaxial, the first rolling area 3, the second rolling area 4 and the third rolling area 5 are manufactured into the roller body in an integral forming mode or a welding mode, and the rolling surfaces of the first rolling area 3 and the third rolling area 5 are smooth surfaces.
The worker uses the rolling mill to roll the metal lithium material strip, the friction force produced between rolling surface and metal lithium material strip of the second rolling area 4 is under the action of the metal lithium material strip, make the metal lithium material strip extend, thickness reduce, metal lithium material strip thin, become the product that the industrial production needs, in this embodiment the metal lithium material strip both sides pass through the first rolling area 3 and third rolling area 5 that the rolling surface is smooth, the roughness of smooth surface is small and the friction force produced between two edges of metal lithium material strip is small, the trafficability is better, difficult to produce the fold edge crack, thus improve the metal lithium material strip edge crack problem; the roughness of the smooth surface is small, the friction force generated by the edges of the metal lithium material belt is small, the friction force born by the two edges of the metal lithium material belt is negligible relative to the rolling force, the vector sum of the friction force born by the two edges of the metal lithium material belt and the rolling force is the same as the rolling force, so that the two edges of the metal lithium material belt only bear downward force, the smooth surface is fully contacted and rolled with the edges of the metal lithium material belt, the edges of the metal lithium material belt are uniformly stressed downwards and uniformly spread compared with the edges of the compressed metal lithium material belt, the consistency of the edges of the metal lithium material belt is improved, edge cracks are not easily generated on the edges of the metal lithium material belt, and the problem of edge cracks in the rolling process of the metal lithium material belt is effectively solved; the improvement of the edge crack phenomenon of the metal lithium material strip reduces the scratch of sharp objects generated by the edge crack metal lithium material strip on the roll body of the roll, reduces the damage to the roll caused by the edge crack, and further prolongs the service life of the roll; simultaneously, the rolling surface of the first rolling area 3 and the rolling surface of the second rolling area 4 reduce the friction force among the rolling surface of the first rolling area 3, the rolling surface of the second rolling area 4 and the edge of the metal lithium material strip through the smooth surface, reduce the abrasion of the metal lithium material strip to the roller in the rolling process, further prolong the service life of the roller, reduce the factory cost, reduce the replacement times of the roller and improve the production efficiency.
Specifically, the roughness of the rolling surface of the first rolling zone 3 is Ra1, the roughness of the rolling surface of the third rolling zone 5 is Ra3, ra1 is less than 0.1 μm, ra3 is less than 0.1 μm, the roughness Ra1 of the rolling surface of the first rolling zone 3 is 0.03 μm, 0.05 μm, 0.06 μm, 0.08 μm, 0.068 μm, 0.82 μm, etc., and the roughness Ra3 of the rolling surface of the third rolling zone 5 is 0.02 μm, 0.04 μm, 0.05 μm, 0.71 μm, 0.80 μm, 0.10 μm, etc.; the absolute value of the difference between the roughness of the rolling surface of the first rolling zone 3 and the roughness of the rolling surface of the third rolling zone 5 is smaller than 0.05, and the smaller the absolute value is, the better the absolute value is, the smaller the absolute value is, the closer the friction force between the rolling surface of the first rolling zone 3, the rolling surface of the third rolling zone 5 and the metal lithium material strip is, so that the occurrence of edge crack caused by rolling deflection due to large difference between two edge stress of the metal lithium material strip can be reduced.
Preferably, the roughness of the rolling surface of the second rolling zone 4 is Ra2, ra2 is 0.1 μm or less and Ra2 is 1.0 μm or less, the roughness Ra2 of the rolling surface of the second rolling zone 4 is 0.1 μm, 0.42 μm, 0.67 μm, 0.68 μm, 0.70 μm, 1.0 μm, further, the roughness of the rolling surface of the second rolling zone 4 is 0.4 μm or less and Ra2 is 0.8 μm or less, and the roughness Ra2 of the rolling surface of the second rolling zone 4 is 0.4 μm, 0.6 μm, 0.8 μm.
The roughness Ra2 of the rolling surface of the second rolling zone 4 is far greater than the roughness Ra1 of the rolling surface of the first rolling zone 3 and the roughness Ra3 of the rolling surface of the third rolling zone 5, and the rolling surface of the second rolling zone 4 keeps higher roughness, so that the metal lithium material strip and the roller body are not easy to slip in the rolling process of the metal lithium material strip, the conveying rolling of the metal lithium material strip is facilitated, two edges of the metal lithium material strip are easy to pass through the rolling surface of the third rolling zone 5 with lower roughness and the rolling surface of the first rolling zone 3, the rolling surface of the third rolling zone 5 with lower roughness and the rolling surface of the first rolling zone 3 are fully contacted with the edge of the metal lithium material strip, and edge stress of the metal lithium material strip is even and edge cracks are not easy to generate.
The following experimental data are used for comparing the edge crack condition of the metal lithium material strip, the minimum thickness of the metal lithium material strip and the thickness difference value of the metal lithium material strip under the condition that the roughness Ra1 of the first rolling zone 3, the roughness Ra2 of the second rolling zone 4 and the roughness Ra3 of the third rolling zone are different:
the horizontal axis in fig. 4 represents the experimental order, and the vertical axis represents the roughness of the rolling surfaces of the first rolling zone 3, the second rolling zone 4, and the third rolling zone 5. Wherein the smaller the numerical value of the maximum edge crack 8 is, the better the edge crack phenomenon is improved, and the smaller the maximum edge crack is, the better the maximum edge crack is; the smaller the minimum thickness value is, the thinner the rolled lithium metal material strip is, and the smaller the minimum thickness value is, the better the minimum thickness value is; the thickness difference ratio is the ratio of the thickest to thinnest difference divided by the thickest ratio after rolling, and the smaller the ratio is, the better; as is clear from the above table and the roughness line graph, the roll for rolling a metal lithium material strip provided by the present utility model has different changes in the edge crack condition of the metal lithium material strip, the minimum thickness of the metal lithium material strip, and the thickness difference of the metal lithium material strip under six different values of the roughness Ra1 of the first rolling zone 3, the roughness Ra2 of the second rolling zone 4, and the roughness Ra3 of the third rolling zone 4, respectively, so that the maximum edge crack of the metal lithium material strip is 2mm, the minimum thickness of the metal lithium material strip is 20 μm, and the thickness difference is 10, respectively, in the first rolling zone 3, the roughness Ra2 of the second rolling zone 4 is 0.05 μm, the roughness Ra3 of the third rolling zone is 0.04 μm, and the maximum edge crack of the metal lithium material strip is 2mm, the minimum thickness of the metal lithium material strip is 20 μm, and the thickness difference is 10, respectively, so that the optimal value of experimental data is reached, and the thickness of the existing metal lithium material strip is more than 50 μm, and the roll of the present utility model can roll an ultrathin metal lithium material strip.
Preferably, the smooth surface structures of the rolling surfaces of the first rolling area 3 and the third rolling area 5 are processed by mechanical polishing or laser etching, such as mechanical polishing, and the rolling surfaces of the first rolling area 3 and the third rolling area 5 are processed by polishing wheels and abrasive particles or other polishing media, wherein the polishing wheels are generally formed by stacking multiple layers of canvas, felt or leather, two sides of the polishing wheels are clamped by metal circular plates, and the rims of the polishing wheels are coated with polishing agents formed by uniformly mixing micro-powder abrasive materials, grease and the like.
Preferably, the diameter of the roll body is D, the value of D is less than or equal to 50 mm and less than or equal to 200 mm, the value of D is 50 mm, 100mm, 150 mm, 200 mm and the like, the width of the roll body is L, the value of L is less than or equal to 100mm and less than or equal to 600mm, the value of L is 100mm, 200 mm, 300mm, 400 mm, 500 mm, 600mm and the like, the width of the second rolling zone 4 is L1, the value of L1 is less than or equal to 50 mm and less than or equal to 400 mm, and the value of L1 is 50 mm, 100mm, 200 mm, 300mm, 400 mm and the like. If the diameter D of the roll body is 200 mm, the width L of the roll body is 600mm, the width L1 of the second rolling area 4 is 400 mm, the width of the first rolling area 3 is 100mm, the width of the third rolling area 5 is 100mm, the width of the existing metal lithium material strip is not more than 300mm, the width of the metal lithium material strip is more than 300mm, and the ultra-wide processing is performed.
During the actual production rolling of the strip of lithium metal material, the transverse width of the strip of lithium metal material should be at least 20mm greater than the width L1 of the second rolling zone 4. The width of the metal lithium material strip is 30mm-600mm; the width of the metal lithium material strip is preferably 60mm to 300mm, for example, the width of the metal lithium material strip is 60mm, 100mm, 120mm, 180mm, 240mm, 300mm, etc., the thickness of the metal lithium material strip is 50 μm to 1000 μm, and the thickness of the metal lithium material strip is preferably 100 μm to 300 μm; for example, the thickness of the metallic lithium material strip is 100 μm, 150 μm, 200 μm, 250 μm, 300 μm, etc. The roller provided by the utility model can roll a lithium belt and a lithium alloy belt, wherein the alloy elements comprise at least one of magnesium, boron, aluminum, silicon, tin, indium, zinc, silver, calcium, manganese, sodium and the like.
Preferably, the cylindricity of the second rolling zone 4 and the first rolling zone 3 is a1, a1 is less than or equal to 3 mu m, and the cylindricity of the second rolling zone 4 and the third rolling zone 5 is a2, a2 is less than or equal to 3 mu m; the coaxiality of the second rolling area 4 and the first rolling area 3 is b1, b1 is less than or equal to 3 mu m, and the coaxiality of the second rolling area 4 and the third rolling area 5 is b2, b2 is less than or equal to 3 mu m; the smaller the cylindricity a1 and the cylindricity a2, the better, the smaller the cylindricity a1 and the cylindricity a2, the smaller the roller diameter difference among the first rolling zone 3, the second rolling zone 4 and the third rolling zone 5, and the roller diameters among the first rolling zone 3, the second rolling zone 4 and the third rolling zone 5 tend to be the same; the smaller the coaxiality b1 and the smaller the coaxiality b2, the better the coaxiality b1 and the smaller the coaxiality b2, the more the axes of the first rolling zone 3, the second rolling zone 4 and the third rolling zone 5 tend to be coaxial with the same axis, namely the axes of the first rolling zone 3, the second rolling zone 4 and the third rolling zone 5; the first rolling area 3, the second rolling area 4 and the third rolling area 5 have the same roller diameters and are coaxial, so that the rolling surfaces of the first rolling area 3, the second rolling area 4 and the third rolling area 5 are positioned on the same straight line, when the metal lithium material strip is rolled, the rolling surfaces of the first rolling area 3, the second rolling area 4 and the third rolling area 5 are fully contacted with the metal lithium material strip, the stress of the metal lithium material strips in each rolling area is uniform, the metal lithium material strips are uniformly rolled, the metal lithium material strips are not easy to roll off, the thickness consistency of the metal lithium material strips is facilitated, and the metal lithium material strips are not easy to wrinkle and edge crack.
Preferably, the rolling surfaces of the second rolling area 4, the first rolling area 3 and the third rolling area 5 are respectively provided with a protective layer, such as a carbide layer, a polymer layer, a ceramic layer and the like, wherein the protective layers are formed in a vacuum deposition mode or a laser enrichment mode and the like, and the rolling surfaces of the rollers are better protected by the arrangement of the protective layers, so that the wear resistance of the rolling surfaces of the second rolling area 4, the first rolling area 3 and the third rolling area 5 can be increased to enable the rollers to be more wear-resistant, the service life of the rollers is further prolonged, the replacement times of the rollers are reduced, the production cost is reduced, and the production benefit of factories is improved.
Preferably, the rolling mill further comprises a first roll neck 2, a second roll neck 6, a first roll head 1 and a second roll head 7, wherein the first roll head 1, the first roll neck 2, the first rolling area 3, the second rolling area 4, the third rolling area 5, the second roll neck 6 and the second roll head 7 are sequentially and fixedly connected to form the rolling mill roll for the metal lithium material belt, the first roll head 1, the first roll neck 2, the first rolling area 3, the second rolling area 4, the third rolling area 5, the second roll neck 6 and the second roll head 7 are manufactured into a rolling mill roll in an integral forming mode or a welding mode, and the first roll head 1, the first roll neck 2, the first rolling area 3, the second rolling area 4, the third rolling area 5, the second roll neck 6 and the second roll head 7 are coaxial, and the rolling mill roll is made of stainless steel or tungsten steel; wherein the first roll neck 2 and the second roll neck 6 are arranged in corresponding mounting bearings of a stand of the rolling mill, and the rolling force is transmitted to the stand through a bearing seat and a pressing device; the first roller head 1 and the second roller head 7 at the transmission ends are connected with the corresponding gear seats through connecting shafts, the rotating moment of the motor is transmitted to the rollers to drive the rollers to rotate, and friction force generated between the second rolling area 4 and the metal lithium material strips drives the metal lithium material strips to roll through gaps between roller bodies rotating in pairs.
Claims (10)
1. The utility model provides a roll is used in metal lithium material area rolling, includes the roll body, the roll body is cylindric structure, characterized by, the roll body comprises first rolling district (3), second rolling district (4) and third rolling district (5), first rolling district (3) second rolling district (4) third rolling district (5) fixed connection in proper order constitutes the roll body, the rolling face of first rolling district (3) with the rolling face of third rolling district (5) is the smooth surface.
2. Roll for rolling a metallic lithium material strip according to claim 1, characterized in that the roughness of the rolling surface of the first rolling zone (3) is Ra 1 The roughness of the rolling surface of the third rolling zone (5) is Ra 3 ，Ra 1 ＜0.1μm、Ra 3 ＜0.1μm。
3. The roll for rolling a metallic lithium material strip according to claim 2, characterized in that the rolling surfaces of the first rolling zone (3) and the third rolling zone (5) are machined to smooth surfaces by mechanical polishing or laser etching.
4. A roll for rolling a strip of lithium metal material according to any one of claims 1 to 3, characterized in that the roughness of the rolling surface of the second rolling zone (4) is Ra 2 ，0.1μm≤Ra 2 ≤1.0μm。
5. The roll for rolling a metallic lithium material strip according to claim 4, characterized in that the roughness of the rolling surface of the second rolling zone (4) is 0.4 μm ∈ra 2 ≤0.8μm。
6. The roll for rolling a lithium metal material strip according to claim 5, wherein the roll diameter of the roll body is D, D is 50 mm or less and 200 mm or less, the width of the roll body is L, L is 100mm or less and 600mm or less, and the width of the second rolling zone (4) is L 1 ，50㎜≤L 1 ≤400㎜。
7. Roll for rolling a metallic lithium material strip according to claim 6, characterized in that the cylindricity of the second rolling zone (4) and the first rolling zone (3) is a 1 The cylindricity of the second rolling zone (4) and the third rolling zone (5) is a 2 ，a 1 ≤3μm、a 2 ≤3μm。
8. Rolling for rolling a strip of metallic lithium material according to claim 7A roll, characterized in that the second rolling zone (4) and the first rolling zone (3) have a coaxiality b 1 The coaxiality of the second rolling zone (4) and the third rolling zone (5) is b 2 ，b 1 ≤3μm、b 2 ≤3μm。
9. The roll for rolling a metallic lithium material strip according to claim 8, characterized in that the rolling surfaces of the second rolling zone (4), the first rolling zone (3) and the third rolling zone (5) each have a protective layer.
10. The roll for rolling a metal lithium material strip according to claim 9, further comprising a first roll neck (2), a second roll neck (6), a first roll head (1) and a second roll head (7), wherein the first roll head (1), the first roll neck (2), the first rolling zone (3), the second rolling zone (4), the third rolling zone (5), the second roll neck (6) and the second roll head (7) are sequentially and fixedly connected to form the roll, and the roll is a structural member made of stainless steel or tungsten steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320364166.6U CN219309674U (en) | 2023-03-02 | 2023-03-02 | Roller for rolling metal lithium material strip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320364166.6U CN219309674U (en) | 2023-03-02 | 2023-03-02 | Roller for rolling metal lithium material strip |
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| Publication Number | Publication Date |
|---|---|
| CN219309674U true CN219309674U (en) | 2023-07-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202320364166.6U Active CN219309674U (en) | 2023-03-02 | 2023-03-02 | Roller for rolling metal lithium material strip |
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- 2023-03-02 CN CN202320364166.6U patent/CN219309674U/en active Active
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