CN114369774A - Double-zero foil blank 8079 alloy head and tail quality control method - Google Patents
Double-zero foil blank 8079 alloy head and tail quality control method Download PDFInfo
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- CN114369774A CN114369774A CN202210039008.3A CN202210039008A CN114369774A CN 114369774 A CN114369774 A CN 114369774A CN 202210039008 A CN202210039008 A CN 202210039008A CN 114369774 A CN114369774 A CN 114369774A
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- 239000000956 alloy Substances 0.000 title claims abstract description 54
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 20
- 239000011888 foil Substances 0.000 title claims abstract description 19
- 238000003908 quality control method Methods 0.000 title description 2
- 238000003466 welding Methods 0.000 claims abstract description 150
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 80
- 238000000034 method Methods 0.000 claims abstract description 30
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 20
- 239000010959 steel Substances 0.000 claims abstract description 20
- 238000000137 annealing Methods 0.000 claims abstract description 18
- 239000000463 material Substances 0.000 claims abstract description 18
- 238000005096 rolling process Methods 0.000 claims abstract description 9
- 238000004080 punching Methods 0.000 claims abstract description 5
- 238000012163 sequencing technique Methods 0.000 claims description 3
- 230000007547 defect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 229910000639 Spring steel Inorganic materials 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- 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
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
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- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Winding, Rewinding, Material Storage Devices (AREA)
- Metal Rolling (AREA)
Abstract
The invention discloses a method for controlling the head and tail quality of 8079 alloy of a double-zero foil blank, which comprises the following steps: s1, rolling the aluminum alloy material into a thin plate with the thickness of 7-4.0mm, and rolling the thin plate to form an aluminum alloy material coil; s2, welding a first welding rod and a second welding rod on the end face of the aluminum alloy material roll in a spot welding mode; s3, punching a steel strip in the middle of the aluminum alloy coil; and S4, feeding the aluminum alloy coil into an annealing furnace for high-temperature annealing treatment of finished products, wherein in the step S1, when the aluminum alloy coil is finished, the aluminum alloy coil is supported against by a trolley in advance, and in the step S2, the first welding rod and the second welding rod are close to the outer ring of the aluminum alloy coil. According to the method for controlling the head and tail quality of the 8079 alloy double-zero foil blank, an end face spot welding mode is adopted, welding spots can effectively inhibit an outer ring loose layer caused by thermal expansion in the annealing process of the material coil, a trolley is used for propping against the aluminum alloy material coil, the outer ring loose layer can be effectively prevented, and the generation of scratches caused by relative movement between an outer ring layer and an inner ring layer of the material coil is effectively reduced by a steel belt.
Description
Technical Field
The invention relates to the technical field related to aluminum processing technology, in particular to a method for controlling the head and tail quality of 8079 alloy of a double-zero foil blank.
Background
Over the years, head and tail loose layer scratches are one of the important factors influencing the yield of a cold-rolled part, the yield of a severe coil subjected to individual scratches is low after defects are removed, or the coil diameter is insufficient after the defects are removed to cause a tape reel, particularly when 8079 alloy large coil diameter is produced, the head and tail scratches are increased, and the yield is only 89.84%.
The traditional Chinese patent with the publication number of CN113215384A provides a protection tool for preventing the outer ring of an aluminum alloy coiled material from loosening, which comprises a first arch-shaped piece, a second arch-shaped piece and a hinge connecting piece, wherein two ends of the first arch-shaped piece are respectively connected with two ends of the second arch-shaped piece through the hinge connecting piece, a plurality of anti-channeling steel columns which are symmetrical up and down are arranged on the first arch-shaped piece, the anti-channeling steel columns are connected with steel binding belts used for binding the aluminum alloy coiled material, anti-skid cloth grains are arranged in the middle of the second arch-shaped piece, and the anti-skid cloth grains are in contact connection with the outer ring of the aluminum alloy coiled material; above-mentioned technical scheme utilizes high temperature resistant spring steel to make bow, when aluminum alloy coiled material carries out annealing treatment, extrusion force between the bow is used for supporting tight aluminum alloy coiled material, plays the effect that prevents the pine layer, but in the annealing process, bow can be along with outer lane aluminum alloy coiled material outwards expands, and relative motion still exists between aluminum alloy coiled material's the interior outer lane layer, leads to the production of scotch.
Disclosure of Invention
The invention provides a method for controlling the head and tail quality of 8079 alloy of a double-zero foil blank in order to make up for market vacancy.
The invention aims to provide a method for controlling the head and tail quality of a 8079 alloy double-zero foil blank, which aims to solve the problem that scratches are generated because an arch piece provided in the background technology expands outwards along with an outer ring aluminum alloy coiled material and the relative movement between an inner ring layer and an outer ring layer of the aluminum alloy coiled material still exists.
In order to achieve the purpose, the invention provides the following technical scheme: a method for controlling the head and tail quality of a 8079 alloy double-zero foil blank comprises the following steps:
s1, rolling the aluminum alloy material into a thin plate with the thickness of 7-4.0mm, and rolling the thin plate to form an aluminum alloy material coil;
s2, welding a first welding rod and a second welding rod on the end face of the aluminum alloy material roll in a spot welding mode;
s3, punching a steel strip in the middle of the aluminum alloy coil;
and S4, sending the aluminum alloy coil into an annealing furnace for high-temperature annealing treatment of the finished product.
When the aluminum alloy coil is ended, the trolley is used for propping the aluminum alloy coil in advance in step S1, and the first welding rod and the second welding rod are close to the outer circle of the aluminum alloy coil in step S2.
Furthermore, the first welding rod is composed of a first upper welding section and a first lower welding section, the first upper welding section and the first lower welding section are mutually staggered, and the bottom end of the first upper welding section is connected with the top end of the first lower welding section.
Furthermore, the second welding rod is composed of a second upper welding section and a second lower welding section, the second upper welding section and the second lower welding section are mutually staggered, and the bottom end of the second upper welding section is connected with the top end of the second lower welding section.
Further, the length of the first welding rod is 3-4cm, the length of the second welding rod is 1.5-2cm, and the distance between the first welding rod and the second welding rod is 20-25 mm.
Further, the strength of the steel strip is higher than that of the aluminum alloy sheet.
Further, the step S2 includes the following steps:
s21, welding a first welding rod, welding the first lower welding section between the 2 nd circle and the 3 rd circle of the aluminum alloy coil, and welding the first upper welding section between the 3 rd circle and the 4 th circle of the aluminum alloy coil, wherein the outermost layer of the aluminum alloy coil is called the 1 st circle, and the 2 nd circle, the 3 rd circle and the 4 th circle are obtained by sequencing layer by layer from outside to inside;
s22, welding a second welding rod, and sequentially welding a second upper welding section and a second lower welding section on the ring layer at a position 20-25mm away from the first welding rod, wherein the second upper welding section and the second lower welding section are only connected with two adjacent ring layers;
and S23, welding a first welding rod and a second welding rod at the mirror symmetry position of the other side of the aluminum alloy material roll.
Further, in the step S21, the number of welding turns is not more than the 4 th turn but is less than the 1 st turn on the outermost side.
Further, between the step S3 and the step S4, a red crayon is used to draw a straight line on the end surface of the aluminum alloy material roll in the axial direction, and after the step S4 is completed, the loose layer condition of the material roll is judged by observing the residual white mark on the end surface of the aluminum alloy material roll.
Compared with the prior art, the invention has the beneficial effects that: according to the method for controlling the head and tail quality of the 8079 alloy double-zero foil blank, an end face spot welding mode is adopted, welding spots can effectively inhibit an outer ring loose layer caused by thermal expansion in the annealing process of a material roll, a trolley is used for propping against the aluminum alloy material roll to effectively prevent the outer ring loose layer, a steel belt is arranged in the middle of the aluminum alloy material roll, the steel belt can inhibit the outer ring loose layer caused by thermal expansion in the annealing process of the material roll, and the generation of scratches caused by relative movement between the outer ring layer and the inner ring layer of the material roll is effectively reduced;
1. by increasing the end face spot welding mode, propping the steel strip by a trolley during ending and punching the steel strip in the middle, the head and tail scratch defects are reduced, the comprehensive yield is improved, the yield is improved from 89.84% to 91.23%, 1.39% points are improved, the rework loss and burning loss are reduced, and the production cost is reduced;
2. the quality of the finished material roll is improved, the feedback and complaints of customers are reduced, the customer satisfaction is improved, and the market competitiveness is increased; 3. the number of abnormal coils of the cold rolling part is reduced, and the order delivery period of a customer is guaranteed.
Drawings
FIG. 1 is a schematic illustration of the position of a steel strip in a structure of the present invention;
FIG. 2 is a schematic end-welding of the structure of the present invention;
FIG. 3 is a schematic flow chart of the structure of the present invention;
FIG. 4 is a schematic view of the wax location of the structure of the present invention;
FIG. 5 is a schematic illustration of an end mark prior to modification;
fig. 6 is a schematic diagram of an end trace of a structure of the present invention.
In the figure: 1. an aluminum alloy material roll; 2. a steel belt; 3. a first welding rod; 4. a second welding rod; 31. a first upper weld segment; 32. a first downweld section; 41. a second upper weld segment; 42. a second lower weld segment.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, 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 invention.
The first embodiment is as follows: referring to fig. 1-6, the present invention provides a technical solution: a method for controlling the head and tail quality of a 8079 alloy double-zero foil blank comprises the following steps:
s1, rolling the aluminum alloy material into a thin plate with the thickness of 7-4.0mm, and rolling the thin plate to form an aluminum alloy material coil 1;
s2, welding a first welding rod 3 and a second welding rod 4 on the end surface of the aluminum alloy coil 1 in a spot welding mode;
s3, punching a steel belt 2 in the middle of the aluminum alloy coil 1;
and S4, sending the aluminum alloy coil 1 into an annealing furnace for high-temperature annealing treatment of the finished product.
When the aluminum alloy material roll 1 is ended in step S1, the trolley is used to hold the aluminum alloy material roll 1 in advance, and in step S2, the first welding rod 3 and the second welding rod 4 are close to the outer ring of the aluminum alloy material roll 1.
When the method for controlling the head and tail quality of the 8079 alloy double-zero foil blank is used, an aluminum alloy sheet rolled by 7-4.0mm thickness passes is rolled, when a rolled aluminum alloy material coil 1 is in the tail, a trolley is pushed against the aluminum alloy material coil 1 in advance under the condition of tension loss after the tail of the aluminum alloy material coil 1 exits a roll gap, the trolley is more than a head roller, the outer ring is effectively prevented from loosening, spot welding is carried out on the end surface of the aluminum alloy material coil 1, a first lower welding section 32 is welded between the 2 nd circle and the 3 rd circle of the outer ring, a first upper welding section 31 is welded between the 3 rd circle and the 4 th circle of the outer ring, the two welding sections are mutually staggered and connected head and tail to form a first welding rod 3, a second welding rod 4 is welded at a position which is about 20-25mm away from the first welding rod 3, the welding point can effectively inhibit the outer ring from loosening caused by thermal expansion in the annealing process, a steel strip 2 is tied in the middle part of the aluminum alloy material coil 1, and the steel strip 2 is tied up the material coil, the outer ring loose layer caused by thermal expansion in the annealing process of the aluminum alloy coil can be inhibited, the generation of scratches caused by relative movement between the outer ring layer and the layer of the aluminum alloy coil is effectively reduced, a red wax crayon is used for drawing a straight line with the length of about 200mm along the axial direction on the end surface of the aluminum alloy coil 1, the processed aluminum alloy coil 1 is sent into an annealing furnace for annealing treatment, the aluminum alloy coil 1 is taken out after the annealing treatment is finished, wax marks on the end surface are observed, if the wax marks are inclined, it is indicated that relative movement is generated between the ring layers of the aluminum alloy coil 1, a scratching phenomenon exists, and if the wax marks keep straight lines, it is indicated that the relative movement between the ring layers of the aluminum alloy coil 1 is small.
The second embodiment is as follows: the embodiment is further limited by the first specific embodiment, as shown in fig. 2, the first welding rod 3 is composed of a first upper welding section 31 and a first lower welding section 32, the first upper welding section 31 and the first lower welding section 32 are staggered, the bottom end of the first upper welding section 31 is connected with the top end of the first lower welding section 32, and staggered welding sections are arranged, so that overlarge ring layer welding seams of the aluminum alloy material coil 1 are avoided, and the risk of tearing and strip breakage in the next rolling process is reduced.
The third concrete implementation mode: in this embodiment, which is a further limitation of the second embodiment, as shown in fig. 2, the second welding rod 4 is composed of a second upper welding section 41 and a second lower welding section 42, the second upper welding section 41 and the second lower welding section 42 are staggered, and the bottom end of the second upper welding section 41 is connected with the top end of the second lower welding section 42.
The fourth concrete implementation mode: the embodiment is further limited to the first embodiment, the length of the first welding rod 3 is 3-4cm, the length of the second welding rod 4 is 1.5-2cm, and the distance between the first welding rod 3 and the second welding rod 4 is 20-25 mm.
The fifth concrete implementation mode: as shown in fig. 1, the strength of the steel strip 2 is higher than that of the aluminum alloy sheet, and the surface of the annealed coil is rolled for 3-4 circles to make the steel strip pinch visible to naked eyes.
The sixth specific implementation mode: in this embodiment, the step S2 includes the following steps:
s21, welding a first welding rod 3, welding a first lower welding section 32 between the 2 nd circle and the 3 rd circle of the aluminum alloy coil 1, and welding a first upper welding section 31 between the 3 rd circle and the 4 th circle of the aluminum alloy coil 1, wherein the outermost layer of the aluminum alloy coil 1 is called the 1 st circle, and the 2 nd circle, the 3 rd circle and the 4 th circle are obtained by sequencing layer by layer from outside to inside;
s22, welding a second welding rod 4, and sequentially welding a second upper welding section 41 and a second lower welding section 42 on the ring layer at a position which is about 20-25mm away from the first welding rod 3, wherein the second upper welding section 41 and the second lower welding section 42 are only connected with two adjacent ring layers;
and S23, welding the first welding rod 3 and the second welding rod 4 at the mirror symmetry position of the other side of the aluminum alloy material roll 1.
The seventh embodiment: in this embodiment, as a further limitation of the sixth embodiment, in step S21, the number of welding turns is not more than the 4 th turn but is less than the 1 st turn on the outermost side, and the avoidance of the 1 st turn on the outermost side is advantageous for threading, and the avoidance of the outer 2 turns is advantageous if the 2 nd turn is abnormally staggered.
The specific implementation mode is eight: as shown in fig. 3 and 4, between step S3 and step S4, a straight line is drawn on the end surface of the aluminum alloy coil 1 along the axial direction by using a red crayon, and after step S4 is completed, the loose condition of the coil is judged by observing the white mark remaining on the end surface of the aluminum alloy coil 1.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. A method for controlling the head and tail quality of a 8079 alloy double-zero foil blank is characterized by comprising the following steps:
s1, rolling the aluminum alloy material into a sheet with the thickness of 7-4.0mm, rolling the sheet to form an aluminum alloy material roll, and propping the aluminum alloy material roll by a trolley in advance when the aluminum alloy material roll is finished;
s2, welding a first welding rod and a second welding rod on the end face of the aluminum alloy material roll in a spot welding mode, wherein in the step S2, the first welding rod and the second welding rod are close to the outer ring of the aluminum alloy material roll;
s3, punching a steel strip in the middle of the aluminum alloy coil;
and S4, sending the aluminum alloy coil into an annealing furnace for high-temperature annealing treatment of the finished product.
2. The method for controlling the head and tail quality of the 8079 alloy of the double-zero foil blank according to claim 1, wherein the method comprises the following steps: the first welding rod is composed of a first upper welding section and a first lower welding section, the first upper welding section and the first lower welding section are mutually staggered, and the bottom end of the first upper welding section is connected with the top end of the first lower welding section.
3. The method for controlling the head and tail quality of the 8079 alloy of the double-zero foil blank according to claim 1, wherein the method comprises the following steps: the second welding rod is composed of a second upper welding section and a second lower welding section, the second upper welding section and the second lower welding section are mutually staggered, and the bottom end of the second upper welding section is connected with the top end of the second lower welding section.
4. The method for controlling the head and tail quality of the 8079 alloy of the double-zero foil blank according to claim 1, wherein the method comprises the following steps: the length of the first welding rod is 3-4cm, the length of the second welding rod is 1.5-2cm, and the distance between the first welding rod and the second welding rod is 20-25 mm.
5. The method for controlling the head and tail quality of the 8079 alloy of the double-zero foil blank according to claim 1, wherein the method comprises the following steps: the strength of the steel strip is higher than that of the aluminum alloy sheet.
6. The method for controlling the head and tail quality of the 8079 alloy of the double-zero foil blank according to claim 1, wherein the method comprises the following steps: the step S2 includes the steps of:
s21, welding a first welding rod, welding the first lower welding section between the 2 nd circle and the 3 rd circle of the aluminum alloy coil, and welding the first upper welding section between the 3 rd circle and the 4 th circle of the aluminum alloy coil, wherein the outermost layer of the aluminum alloy coil is called the 1 st circle, and the 2 nd circle, the 3 rd circle and the 4 th circle are obtained by sequencing layer by layer from outside to inside;
s22, welding a second welding rod, and sequentially welding a second upper welding section and a second lower welding section on the ring layer at a position 20-25mm away from the first welding rod, wherein the second upper welding section and the second lower welding section are only connected with two adjacent ring layers;
and S23, welding a first welding rod and a second welding rod at the mirror symmetry position of the other side of the aluminum alloy material roll.
7. The method for controlling the head and tail quality of the 8079 alloy of a double-zero foil blank according to claim 6, wherein the method comprises the following steps: the number of the welding turns in the step S21 avoids the outermost 1 st turn and does not exceed the 4 th turn.
8. The method for controlling the head and tail quality of the 8079 alloy of the double-zero foil blank according to claim 1, wherein the method comprises the following steps: and between the step S3 and the step S4, a red wax crayon is used for drawing straight lines distributed along the axial direction on the end face of the aluminum alloy material roll, and after the step S4 is finished, the loose layer condition of the material roll is judged by observing the residual white mark on the end face of the aluminum alloy material roll.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210039008.3A CN114369774A (en) | 2022-01-13 | 2022-01-13 | Double-zero foil blank 8079 alloy head and tail quality control method |
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| CN202210039008.3A CN114369774A (en) | 2022-01-13 | 2022-01-13 | Double-zero foil blank 8079 alloy head and tail quality control method |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001276979A (en) * | 2000-03-30 | 2001-10-09 | Kawasaki Steel Corp | Spot welding method for steel plate and spot welding apparatus |
| CN102921729A (en) * | 2012-11-13 | 2013-02-13 | 镇江鼎胜铝业股份有限公司 | Method of improving surface quality of light gauge aluminum foil preform body |
| CN105463351A (en) * | 2015-12-31 | 2016-04-06 | 中铝西南铝冷连轧板带有限公司 | Method for reducing annealing defect of aluminum product |
| CN108772423A (en) * | 2018-05-25 | 2018-11-09 | 中铝瑞闽股份有限公司 | A kind of control method for eliminating band tail portion pallet print |
-
2022
- 2022-01-13 CN CN202210039008.3A patent/CN114369774A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001276979A (en) * | 2000-03-30 | 2001-10-09 | Kawasaki Steel Corp | Spot welding method for steel plate and spot welding apparatus |
| CN102921729A (en) * | 2012-11-13 | 2013-02-13 | 镇江鼎胜铝业股份有限公司 | Method of improving surface quality of light gauge aluminum foil preform body |
| CN105463351A (en) * | 2015-12-31 | 2016-04-06 | 中铝西南铝冷连轧板带有限公司 | Method for reducing annealing defect of aluminum product |
| CN108772423A (en) * | 2018-05-25 | 2018-11-09 | 中铝瑞闽股份有限公司 | A kind of control method for eliminating band tail portion pallet print |
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Application publication date: 20220419 |