CN113894175A - Processing method of aluminum substrate for printing - Google Patents
Processing method of aluminum substrate for printing Download PDFInfo
- Publication number
- CN113894175A CN113894175A CN202111160481.9A CN202111160481A CN113894175A CN 113894175 A CN113894175 A CN 113894175A CN 202111160481 A CN202111160481 A CN 202111160481A CN 113894175 A CN113894175 A CN 113894175A
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- CN
- China
- Prior art keywords
- rolling
- hot
- aluminum
- cold rolling
- thickness
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 44
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 44
- 238000003672 processing method Methods 0.000 title claims abstract description 10
- 239000000758 substrate Substances 0.000 title abstract description 13
- 238000005096 rolling process Methods 0.000 claims abstract description 36
- 238000005097 cold rolling Methods 0.000 claims abstract description 33
- 238000005098 hot rolling Methods 0.000 claims abstract description 33
- 238000000034 method Methods 0.000 claims abstract description 9
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 10
- 239000010959 steel Substances 0.000 claims description 10
- 238000002791 soaking Methods 0.000 claims description 6
- 238000000137 annealing Methods 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 claims description 4
- 238000003723 Smelting Methods 0.000 claims description 3
- 238000004806 packaging method and process Methods 0.000 claims description 3
- 238000007670 refining Methods 0.000 claims description 3
- 229910019932 CrNiMo Inorganic materials 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims description 2
- 230000007547 defect Effects 0.000 abstract description 10
- 235000008331 Pinus X rigitaeda Nutrition 0.000 abstract description 4
- 235000011613 Pinus brutia Nutrition 0.000 abstract description 4
- 241000018646 Pinus brutia Species 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 238000003754 machining Methods 0.000 description 3
- 230000008602 contraction Effects 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 210000001787 dendrite Anatomy 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/02—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
Abstract
The invention provides a processing method of an aluminum substrate for printing, belonging to the technical field of processing of aluminum alloy aluminum plates, the aluminum substrate is annealed after hot rolling and cold rolling, the hot rolling thickness is 5mm, the aluminum substrate needs to be rolled to a target thickness by cold rolling, the capacity of a cold rolling mill is greatly wasted, surface defects (pine branch-shaped patterns) can appear on an over-thin hot rolled coil, or the roll collapse (integral defect) occurs, the application of the subsequent aluminum plate substrate in the aspect of printing is seriously influenced, the hot rolling process step is adjusted, the hot final rolling thickness is 2.5mm, pine-tree-shaped patterns do not exist on the surface of the prepared hot-rolled aluminum roll, the roll collapse is avoided integrally, the subsequent processing quality is ensured, the target thickness can be rolled only by one-pass cold rolling in the subsequent process, the subsequent cold rolling step is greatly reduced, the capacity of a cold rolling mill is released, and the processing and the manufacturing of the aluminum plate substrate for printing are facilitated.
Description
Technical Field
The invention relates to the technical field of processing of aluminum alloy aluminum plates, in particular to a processing method of an aluminum plate substrate for printing.
Background
The thickness of an aluminum substrate for printing is generally 0.2-1.0mm, the aluminum substrate for producing the printed aluminum substrate in the current industry adopts a hot rolling mill to produce hot rolled coils with the thickness of 5mm, then the hot rolled coils are rolled by a cold rolling mill with a sleeve for n times to obtain the target thickness from more than 5mm, and then the annealing process is carried out. Since the hot rolled sheet has a rough surface and is not suitable for direct application to printing, it must be cold rolled after hot rolling, and since the plasticity and toughness of the sheet are reduced after cold rolling, which is not favorable for processing, it must be annealed once more.
Because the cold rolling temperature is below the crystallization temperature, pure mechanical processing belongs to finish machining, and the cold rolling cost is higher than that of hot rolling, the cold rolling frequency and the cold rolling strength are generally reduced as much as possible, the hot rolling thickness is close to the target thickness as much as possible, the capacity of a cold rolling mill is saved, however, if the hot rolling target thickness is reduced, the hot rolling pressure is inevitably increased, pine-tree-shaped patterns appear on the surface, the coil collapse is easily caused in the rolling process, the requirement of subsequent cold rolling finish machining cannot be met, the hot rolling thickness is generally controlled to be 5mm, the target thickness is achieved through recoiling, and if the processing quality can be guaranteed, the rolling pressure is below 5mm, the cold rolling channel number is greatly reduced, and the capacity of the cold rolling mill is released.
Disclosure of Invention
Aiming at the defects of surface defect and collapsing coil caused by overlarge hot rolling pressure of an aluminum plate base in the prior art, the invention provides a processing method of the aluminum plate base for printing.
The processing method of the aluminum base plate for printing is characterized in that the aluminum base plate is prepared by the following steps:
(1) smelting, keeping the temperature and refining to obtain an aluminum ingot;
(2) carrying out soaking treatment on the aluminum ingot;
(3) before hot rolling, a steel sleeve is added on a mandrel of a coiler;
(4) hot rolling; hot rolling comprises hot rough rolling and then hot finish rolling; the coiling machine starts to work while hot rolling to obtain hot rolled coils;
(5) cold rolling the hot rolled coil and then annealing;
(6) and (5) cutting edges, cutting to a target size, and packaging.
Wherein the aluminum ingot is 1XXX aluminum alloy.
Wherein the soaking treatment is specifically heating treatment at 560 +/-10 ℃ for 7-9h, and then heat preservation treatment at 460 +/-10 ℃ for 1-3 h.
Wherein, the specification of the steel sleeve is phi 605 x 695 x 2500, and the material is 35 CrNiMo.
Wherein the diameter of the hot rolling coiling mandrel is 580mm in a contraction state and 695mm after expansion.
Wherein the hot rough rolling is specifically that a rough rolling mill is used for rolling for 15-19 times, and the cast ingot is processed into an intermediate blank with the thickness of 35 +/-2 mm; and the hot finish rolling is finish rolling of a 4-stand hot continuous rolling mill.
Wherein the final rolling temperature in the hot rolling is 340-350 ℃, and the final rolling thickness is 2.0 +/-0.1 mm.
Wherein the cold rolling is one-pass cold rolling; the cold rolling temperature is 70-120 ℃, the cold rolling thickness is 0.1-1.0mm, and the rolling speed is 400-500 m/min.
The invention has the beneficial effects
In the field, cold-rolled aluminum coils (obtained by cold-rolling and annealing a 5mm hot-rolled plate) are generally used as aluminum plate bases, a coiling machine and a coiling drum are generally used in a cold-rolling stage, the coiling drum and the coiling machine are creatively applied to the hot-rolling stage to prepare the hot-rolled aluminum coils, so that the hot-rolling pressure is improved, the thickness of the hot-rolled coils is reduced to be below 2mm, the hot-rolled coils can be pressed to the target thickness only by one-pass cold rolling, the capacity of a cold-rolling mill is greatly released, and the working pressure of the cold-rolling mill is reduced. Moreover, the surface of the aluminum substrate prepared by the method has no pine branch-shaped crystals, is flat and does not collapse, and is very suitable for being applied to the field of printing.
Drawings
FIG. 1 is a schematic view of a hot rolling mill crimper, wherein 1 is a hot rolling mill mandrel and 2 is a steel sleeve;
FIG. 2 shows the hot-rolled aluminum prepared by the present invention, which has a flat surface, no pattern, and a thickness of 2.5 mm;
FIG. 3 shows that the hot rolled aluminum coil prepared by the present invention has no coil collapse phenomenon;
FIG. 4 is a hot-rolled aluminum produced in comparative example 1, with pine dendrite (surface defects) appearing on the surface;
FIG. 5 shows the hot rolled aluminum coil prepared in comparative example 1, a collapse defect (bulk defect).
Detailed Description
In order to make the technical solutions of the present application better understood, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Example 1
Before production, when the steel reel is sleeved on the coiling machine, the mandrel is in a contraction state and has a diameter of 580mm, and after the steel reel is sleeved on the mandrel, the diameter of the mandrel is expanded to 695 mm.
Setting hot rolling parameters, wherein the hot final rolling thickness is 2.5mm, and the hot final rolling temperature is 340-.
And (4) starting the machine to move the aluminum strip, after the production is finished, re-flavoring the diameter of the mandrel in a contracted state, and taking down the aluminum coil and the steel sleeve.
The aluminum cast ingot comprises the following elements in percentage by weight: 0.08% of Si, 0.3% of Fe, 0.0015% of Cu, Mn: 0.0022%, Mg: 0.18 percent, less than or equal to 0.03 percent of other single elements, less than or equal to 0.015 percent of the total, and the balance of aluminum.
The production method comprises the following steps: smelting → heat preservation and refining → sawing machine → milling machine → soaking treatment → hot rolling (rough rolling, finish rolling) → trimming → packaging.
The soaking treatment adopts the following steps: 565 ℃ X7 h +460 ℃ X2 h.
In the hot continuous rolling process, 1+4 hot continuous rolling is adopted, and a roughing mill is used for rolling for 15-19 times to process the cast ingot into a 36mm intermediate billet. Rolling by using a 4-stand hot continuous rolling mill, wherein the outlet thickness of a hot rolling blank is 2.5mm, and the final rolling temperature of hot rolling is 340-.
The finished product is 1.3mm after the cold rolling mill rolls for one time, the rolling speed is 400-.
Comparative example 1
The steel sleeve was not placed on the coiler after the hot mill and the procedure was followed as in example 1.
As can be seen from the attached drawings 2-5, the hot-rolled aluminum coil prepared by the invention has smooth and defect-free surface, 2.5mm and no coil collapse, while the hot-rolled aluminum coil prepared by the comparative example 1 has pine tree-shaped patterns on the surface and the coil collapse phenomenon, which is very unfavorable for the subsequent cold rolling finish machining, and the aluminum coil with defects can not be used as an aluminum base layer to be applied to an aluminum substrate. The steel sleeve is sleeved on the crimping machine behind the hot rolling machine, the hot rolling pressure is increased, the supporting force of the sleeve is increased, and the surface defect and the overall defect of the hot-rolled aluminum coil which are easy to appear can be obviously avoided in the hot rolling process.
Claims (8)
1. The processing method of the aluminum base plate for printing is characterized in that the aluminum base plate is prepared by the following steps:
(1) smelting, keeping the temperature and refining to obtain an aluminum ingot;
(2) carrying out soaking treatment on the aluminum ingot;
(3) before hot rolling, a steel sleeve is added on a mandrel of a coiler;
(4) hot rolling; hot rolling comprises hot rough rolling and then hot finish rolling; the coiling machine starts to work while hot rolling to obtain hot rolled coils;
(5) cold rolling the hot rolled coil and then annealing;
(6) and (5) cutting edges, cutting to a target size, and packaging.
2. The process of claim 1, wherein said aluminum ingot is a 1XXX aluminum alloy.
3. The processing method according to claim 1, wherein the soaking treatment is carried out by heating at 560 + 10 ℃ for 7-9h and then maintaining at 460 + 10 ℃ for 1-3 h.
4. The process of claim 1 wherein said steel sleeve is of the gauge phi 605 x 695 x 2500 and is 35 CrNiMo.
5. A method of working as claimed in claim 4, wherein the hot rolled reeling mandrel is arranged to have a diameter of 580mm in the contracted state and 695mm in the expanded state.
6. The processing method as claimed in claim 1, wherein the hot rough rolling is carried out by rolling the ingot into an intermediate blank with the thickness of 35 plus or minus 2mm for 15 to 19 times by using a rough rolling mill; and the hot finish rolling is finish rolling of a 4-stand hot continuous rolling mill.
7. The processing method as claimed in claim 6, wherein the final rolling temperature in the hot rolling is 340 ℃ to 350 ℃, and the final rolling thickness is 2.0 ± 0.1 mm.
8. The process of claim 1, wherein cold rolling is one pass cold rolling; the cold rolling temperature is 70-120 ℃, the cold rolling thickness is 0.1-1.0mm, and the rolling speed is 400-500 m/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111160481.9A CN113894175A (en) | 2021-09-30 | 2021-09-30 | Processing method of aluminum substrate for printing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111160481.9A CN113894175A (en) | 2021-09-30 | 2021-09-30 | Processing method of aluminum substrate for printing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113894175A true CN113894175A (en) | 2022-01-07 |
Family
ID=79189766
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111160481.9A Pending CN113894175A (en) | 2021-09-30 | 2021-09-30 | Processing method of aluminum substrate for printing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113894175A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1506174A (en) * | 2002-12-12 | 2004-06-23 | 鞍山钢铁集团公司 | Winding method for hot rolled steel strip |
| JP2008291305A (en) * | 2007-05-24 | 2008-12-04 | Fujifilm Corp | Method for manufacturing aluminum alloy sheet for lithographic printing plate |
| CN201988591U (en) * | 2011-03-28 | 2011-09-28 | 衡阳中钢衡重设备有限公司 | Winding drum of hot-rolling recoiling machine |
| CN104624700A (en) * | 2014-12-31 | 2015-05-20 | 中铝西南铝冷连轧板带有限公司 | Production method of printing PS plate aluminum material through cold rolling and direct rolling |
| CN105063430A (en) * | 2015-07-28 | 2015-11-18 | 大力神铝业股份有限公司 | 3003-H16 aluminum alloy plate strip and production method thereof |
| CN106311744A (en) * | 2016-08-18 | 2017-01-11 | 广西南南铝加工有限公司 | Production method capable of reducing black stripes on surface of aluminium coil |
| CN107805746A (en) * | 2017-12-15 | 2018-03-16 | 中铝瑞闽股份有限公司 | A kind of 5005H34 aluminum alloy plate materials and its production method |
| CN107812789A (en) * | 2017-10-26 | 2018-03-20 | 攀钢集团攀枝花钢铁研究院有限公司 | The method for preventing the flat volume of hot rolled coil |
| CN108160746A (en) * | 2018-03-23 | 2018-06-15 | 广西柳州银海铝业股份有限公司 | Hot continuous rolling coiling machine upper sleeve apparatus |
| CN108330341A (en) * | 2018-03-15 | 2018-07-27 | 厦门厦顺铝箔有限公司 | A kind of printing plate base aluminium alloy strips and preparation method thereof |
-
2021
- 2021-09-30 CN CN202111160481.9A patent/CN113894175A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1506174A (en) * | 2002-12-12 | 2004-06-23 | 鞍山钢铁集团公司 | Winding method for hot rolled steel strip |
| JP2008291305A (en) * | 2007-05-24 | 2008-12-04 | Fujifilm Corp | Method for manufacturing aluminum alloy sheet for lithographic printing plate |
| CN201988591U (en) * | 2011-03-28 | 2011-09-28 | 衡阳中钢衡重设备有限公司 | Winding drum of hot-rolling recoiling machine |
| CN104624700A (en) * | 2014-12-31 | 2015-05-20 | 中铝西南铝冷连轧板带有限公司 | Production method of printing PS plate aluminum material through cold rolling and direct rolling |
| CN105063430A (en) * | 2015-07-28 | 2015-11-18 | 大力神铝业股份有限公司 | 3003-H16 aluminum alloy plate strip and production method thereof |
| CN106311744A (en) * | 2016-08-18 | 2017-01-11 | 广西南南铝加工有限公司 | Production method capable of reducing black stripes on surface of aluminium coil |
| CN107812789A (en) * | 2017-10-26 | 2018-03-20 | 攀钢集团攀枝花钢铁研究院有限公司 | The method for preventing the flat volume of hot rolled coil |
| CN107805746A (en) * | 2017-12-15 | 2018-03-16 | 中铝瑞闽股份有限公司 | A kind of 5005H34 aluminum alloy plate materials and its production method |
| CN108330341A (en) * | 2018-03-15 | 2018-07-27 | 厦门厦顺铝箔有限公司 | A kind of printing plate base aluminium alloy strips and preparation method thereof |
| CN108160746A (en) * | 2018-03-23 | 2018-06-15 | 广西柳州银海铝业股份有限公司 | Hot continuous rolling coiling machine upper sleeve apparatus |
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