CN110964955B - Production method of 5052 aluminum alloy wafer for electric cooker liner - Google Patents
Production method of 5052 aluminum alloy wafer for electric cooker liner Download PDFInfo
- Publication number
- CN110964955B CN110964955B CN201911316096.1A CN201911316096A CN110964955B CN 110964955 B CN110964955 B CN 110964955B CN 201911316096 A CN201911316096 A CN 201911316096A CN 110964955 B CN110964955 B CN 110964955B
- Authority
- CN
- China
- Prior art keywords
- aluminum alloy
- rolling
- production method
- hot
- annealing
- 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.)
- Active
Links
Classifications
-
- 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
- C22C21/06—Alloys based on aluminium with magnesium as the next major constituent
- C22C21/08—Alloys based on aluminium with magnesium as the next major constituent with silicon
-
- 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
- C22F1/047—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 of alloys with magnesium as the next major constituent
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Metal Rolling (AREA)
- Continuous Casting (AREA)
Abstract
The invention belongs to the field of aluminum alloy manufacturing, and particularly relates to a production method of 5052 aluminum alloy wafers for an electric cooker liner. The production method comprises the following steps of carrying out homogenization treatment, hot rolling, first cold rolling, intermediate annealing and second cold rolling on an aluminum alloy ingot obtained by smelting and casting, and carrying out finished product annealing and sheet punching to obtain an aluminum alloy finished product. The method adopts a special homogenization treatment process, and simultaneously carries out intermediate annealing and finished product annealing of the strip through the air cushion type continuous annealing furnace, thereby greatly refining crystal grains and reducing the anisotropy of the material. The processing toughness of the wafer is improved, and the problem of low lug making rate after deep drawing is ensured.
Description
Technical Field
The invention belongs to the field of aluminum alloy manufacturing, and particularly relates to a production method of 5052 aluminum alloy wafers for an electric cooker liner.
Background
The aluminum alloy electric cooker liner product is popular with consumers and kitchenware industries due to the advantages of light weight, good deep drawing performance, high thermal uniformity, gorgeous color and luster after surface anodization and the like. At present, the deep drawing pot is generally made of 1, 3 and 8 series aluminum alloy wafers through deep drawing, 5 series aluminum alloy which is firmer and more durable is not developed all the time, and therefore a 5052 wafer product needs to be developed in a process.
The traditional aluminum alloy wafer is mostly produced by 3003 aluminum alloy, the surface of the produced wafer product is dull and rough, the appearance is poor, and meanwhile, the durability is poor due to the soft quality.
Disclosure of Invention
The problems that the surface of a traditional 3003 wafer product is dim and rough, the appearance is poor and the durability is poor are solved. The invention provides a production method of 5052 aluminum alloy wafers for an electric cooker liner, which is used for meeting market demands.
The purpose of the invention is realized by the following technical scheme:
a production method of 5052 aluminum alloy wafers for electric cooker liners comprises the following steps:
1) smelting and casting an aluminum alloy ingot, wherein the aluminum alloy ingot comprises the following chemical components in percentage by mass:
0 to 0.2% of Si, 0 to 0.3% of Fe, 0 to 0.1% of Mn, 0 to 0.10% of Cu, 0.15 to 0.35% of Cr, 0.02 to 0.05% of Ti, 0 to 0.10% of Zn, 2.2 to 2.5% of Mg, and the balance of Al and unavoidable impurities;
2) and carrying out homogenization treatment, hot rolling, primary cold rolling, intermediate annealing and secondary cold rolling on the aluminum alloy ingot obtained in the step 1), and then carrying out finished product annealing and sheet punching to obtain an aluminum alloy finished product.
Preferably, the temperature of furnace gas subjected to homogenization treatment in the step 2) is 615 +/-10 ℃, the heat preservation time is 15-20 h, and the heat preservation temperature of the aluminum alloy cast ingot is as follows: keeping the temperature for 10-12 h at 550 +/-10 ℃.
Preferably, the hot rolling initial rolling temperature is 480-510 ℃, and the final rolling temperature is 280-330 ℃.
Preferably, the hot rolling comprises hot rough rolling and hot finish rolling, the transfer thickness of the hot rough rolling is 18-20 mm, and the thickness of the lower line after the hot finish rolling is 10-11 mm.
Preferably, the thickness of the product obtained by the first cold rolling is 2.0-3.0 mm, and the thickness of the product obtained by the second cold rolling is 1.0-2.0 mm.
Preferably, the furnace gas temperature of the intermediate annealing is 400-450 ℃, and the heat treatment speed of the strip is 30-35 m/min; the furnace gas temperature of the finished product annealing is 320-380 ℃, and the heat treatment speed of the strip is 20-30 m/min.
The invention carries out homogenization treatment on the cast ingot, adopts a 1+1 type hot rolling unit, carries out finish rolling on the ingot by a single pass, has the offline thickness of 9-10 mm, controls the total cold rolling processing rate to be more than 80%, and simultaneously adopts a continuous air cushion annealing furnace to carry out intermediate annealing (O state) and finished product stabilizing annealing (H32 state). The method adopts a special homogenization treatment process, and simultaneously carries out intermediate annealing and finished product annealing of the strip through the air cushion type continuous annealing furnace, thereby greatly refining crystal grains and reducing the anisotropy of the material. The processing toughness of the wafer is improved, and the problem of low lug making rate after deep drawing is ensured.
The production method of the aluminum alloy deep-drawing wafer has the advantages of simple process, short flow, low energy consumption, low cost and good deep-drawing performance and appearance quality.
Detailed Description
The present invention will be described in further detail with reference to specific examples, but the embodiments of the present invention are not limited to the scope of the examples. These examples are intended to illustrate the invention only and are not intended to limit the scope of the invention. In addition, various modifications may occur to those skilled in the art upon reading the present disclosure, and such equivalent variations are within the scope of the present invention as defined in the appended claims.
Example 1
The wafer product is produced by adopting an aluminum alloy hot-rolled ingot, and the production process comprises the following production steps:
(1) the preparation method comprises the following steps of: 0.15% of Si, 0.18% of Fe, 0.09% of Mn, 0.06% of Cu, 0.35% of Cr, 0.03% of Ti, 0.06% of Zn, 2.35% of Mg, and the balance of Al and inevitable impurities.
(2) Smelting and slag drawing: smelting, refining and slag-drawing the ingredients in the step 1 to obtain molten aluminum alloy; specifically, in this example, the temperature range of melting, refining, and slag removal was 740 ℃, and the melt was stirred.
(3) Casting: casting the aluminum alloy melt in the step 2 into a rectangular ingot blank; the casting temperature in this example was 670 ℃, the casting speed was 50mm/min, and the water pressure was 0.25 MPa.
(4) Milling a surface: and (4) symmetrically milling the cast ingot obtained in the step (3), wherein the milling depth of the surface of the cast ingot is 18 mm.
(5) Homogenizing: the homogenization treatment adopts a single-stage soaking process, the furnace gas temperature is 618 ℃/15.5h, the metal heat preservation temperature is as follows: 545 ℃ and 11h, and cooling the ingot to the room temperature of 25 ℃ along with the furnace.
(6) Hot rolling: and (2) carrying out hot rough rolling and hot finish rolling on the cast ingot subjected to the homogenization heat treatment by a 1+1 type hot rolling unit, wherein the initial rolling temperature of the hot rough rolling is 505 ℃, the transfer thickness is 20.0mm, the offline thickness of the hot finish rolling is 10.5mm, and the final rolling temperature is 316 ℃.
(7) Cold rolling and intermediate annealing: cold rolling to the intermediate thickness of 2.35mm, and then intermediate annealing in an air cushion furnace, wherein the process comprises the following steps: furnace gas temperature 450 ℃, strip heat treatment speed: 35 m/min.
(8) Cold rolling and finished product annealing: cold rolling to the thickness of 2.0mm, and then performing stabilization annealing on the finished product in an air cushion furnace, wherein the process comprises the following steps: furnace gas temperature 365 ℃, strip heat treatment speed: 27 m/min.
(9) Punching: the speed of sheet falling is 25 sheets/min, and the specification of the finished product is 2.0mm phi 355 mm.
The crystal grains of the final wafer product are equiaxial crystals, the grain size is one-order lower, and the average size of the crystal grains is 22 mu m.
Example 2
The wafer product is produced by adopting an aluminum alloy hot-rolled ingot, and the production process comprises the following production steps:
(1) the preparation method comprises the following steps of: 0.07% of Si, 0.23% of Fe, 0.06% of Mn, 0.03% of Cu, 0.25% of Cr, 0.02% of Ti, 0.03% of Zn, 2.41% of Mg, and the balance of Al and inevitable impurities.
(2) Smelting and slag drawing: smelting, refining and slag-drawing the ingredients in the step 1 to obtain molten aluminum alloy; specifically, in this example, the temperature range of melting, refining, and slag removal was 745 ℃, and the melt was stirred.
(3) Casting: casting the aluminum alloy melt in the step 2 into a rectangular ingot blank; the casting temperature in this example was 682 ℃, the casting speed was 55mm/min, and the water pressure was 0.28 MPa.
(4) Milling a surface: and (4) symmetrically milling the cast ingot obtained in the step (3), wherein the milling depth of the example is 22mm of a single surface.
(5) Homogenizing: the homogenization treatment adopts a single-stage soaking process, the furnace gas temperature is 613 ℃/16h, and the metal heat preservation temperature is as follows: 556 ℃/12h, and cooling the ingot to the room temperature of 28 ℃ along with the furnace.
(6) Hot rolling: and (2) carrying out hot rough rolling and hot finish rolling on the cast ingot subjected to the homogenization heat treatment by a 1+1 type hot rolling unit, wherein the initial rolling temperature of the hot rough rolling is 490 ℃, the transfer thickness is 18.6mm, the end line thickness of the hot finish rolling is 10.2mm, and the final rolling temperature is 325 ℃.
(7) Cold rolling and intermediate annealing: cold rolling to the intermediate thickness of 2.15mm, and then intermediate annealing in an air cushion furnace, wherein the process comprises the following steps: furnace gas temperature 445 ℃, strip heat treatment speed: 32 m/min.
(8) Cold rolling and finished product annealing: cold rolling to the thickness of 1.80mm, and then performing stabilization annealing on the finished product in an air cushion furnace, wherein the process comprises the following steps: furnace gas temperature 365 ℃, strip heat treatment speed: 22 m/min.
(9) Punching: the speed of sheet falling is 25 sheets/min, and the specification of the finished product is 1.8mm phi 325 mm.
The crystal grains of the final wafer product are equiaxial crystals, the grain size is one-order lower, and the average size of the crystal grains is 32 mu m.
Example 3
The wafer product is produced by adopting an aluminum alloy hot-rolled ingot, and the production process comprises the following production steps:
(1) the preparation method comprises the following steps of: 0% of Si, 0% of Fe, 0% of Mn, 0% of Cu, 0.15% of Cr, 0.02% of Ti, 0% of Zn, 2.2% of Mg, and the balance of Al and inevitable impurities.
(2) Smelting and slag drawing: smelting, refining and slag-drawing the ingredients in the step 1 to obtain molten aluminum alloy; specifically, in this example, the temperature range of melting, refining, and slag removal was 740 ℃, and the melt was stirred.
(3) Casting: casting the aluminum alloy melt in the step 2 into a rectangular ingot blank; the casting temperature in this example was 670 ℃, the casting speed was 50mm/min, and the water pressure was 0.25 MPa.
(4) Milling a surface: and (4) symmetrically milling the cast ingot obtained in the step (3), wherein the milling depth of the surface of the cast ingot is 15 mm.
(5) Homogenizing: the homogenization treatment adopts a single-stage soaking process, the furnace gas temperature is 605 ℃/15h, and the metal heat preservation temperature is as follows: 540 ℃/10h, and cooling the cast ingot to the room temperature of 25 ℃ along with the furnace.
(6) Hot rolling: and (3) carrying out hot rough rolling and hot finish rolling on the cast ingot after the homogenization heat treatment, wherein the initial rolling temperature of the hot rough rolling is 480 ℃, the transfer thickness is 18mm, the offline thickness of the hot finish rolling is 10mm, and the final rolling temperature is 280 ℃.
(7) Cold rolling and intermediate annealing: cold rolling to the intermediate thickness of 2.0mm, and then intermediate annealing in an air cushion furnace, wherein the process comprises the following steps: furnace gas temperature 400 ℃, strip heat treatment speed: 30 m/min.
(8) Cold rolling and finished product annealing: cold rolling to the thickness of 1mm, and then performing stabilization annealing on the finished product of the air cushion furnace, wherein the process comprises the following steps: furnace gas temperature 320 ℃, strip heat treatment speed: 20 m/min.
(9) Punching: the speed of sheet falling is 25 sheets/min, and the specification of the finished product is 1mm phi 200 mm.
The crystal grains of the final wafer product are equiaxial crystals, the grain size is lower by one order, and the average size of the crystal grains is 25 mu m.
Example 4
The wafer product is produced by adopting an aluminum alloy hot-rolled ingot, and the production process comprises the following production steps:
(1) the preparation method comprises the following steps of: 0.2% of Si, 0.3% of Fe, 0.1% of Mn, 0.10% of Cu, 0.35% of Cr, 0.05% of Ti, 0.10% of Zn, 2.5% of Mg, and the balance of Al and inevitable impurities.
(2) Smelting and slag drawing: smelting, refining and slag-drawing the ingredients in the step 1 to obtain molten aluminum alloy; specifically, in this example, the temperature range of melting, refining, and slag removal was 740 ℃, and the melt was stirred.
(3) Casting: casting the aluminum alloy melt in the step 2 into a rectangular ingot blank; the casting temperature in this example was 670 ℃, the casting speed was 50mm/min, and the water pressure was 0.25 MPa.
(4) Milling a surface: and (4) symmetrically milling the cast ingot obtained in the step (3), wherein the milling depth of the surface of the cast ingot is 30 mm.
(5) Homogenizing: the homogenization treatment adopts a single-stage soaking process, the furnace gas temperature is 625 ℃/20h, and the metal heat preservation temperature is as follows: 560 ℃/12h, and cooling the cast ingot to the room temperature of 25 ℃ along with the furnace.
(6) Hot rolling: and (3) carrying out hot rough rolling and hot finish rolling on the ingot subjected to the homogenization heat treatment, wherein the initial rolling temperature of the hot rough rolling is 510 ℃, the transfer thickness is 20mm, the offline thickness of the hot finish rolling is 11mm, and the final rolling temperature is 330 ℃.
(7) Cold rolling and intermediate annealing: cold rolling to the intermediate thickness of 3.0mm, and then intermediate annealing in an air cushion furnace, wherein the process comprises the following steps: furnace gas temperature 450 ℃, strip heat treatment speed: 35 m/min.
(8) Cold rolling and finished product annealing: cold rolling to the thickness of 2.0mm, and then performing stabilization annealing on the finished product in an air cushion furnace, wherein the process comprises the following steps: furnace gas temperature 380 ℃, strip heat treatment speed: 30 m/min.
(9) Punching: the speed of sheet falling is 25 sheets/min, and the specification of the finished product is 2.0mm phi 500 mm.
The crystal grains of the final wafer product are equiaxial crystals, the grain size is lower by one, and the average size of the crystal grains is 26 mu m.
The finished product size of the wafer is (1.0-2.0) mm phi (200 plus 500) mm, and the obtained 5052 aluminum alloy has fine crystal grains, so that the processing toughness of the wafer is ensured, and the market demand is met.
Claims (5)
1. A production method of 5052 aluminum alloy wafers for electric cooker liners is characterized by comprising the following steps:
1) smelting and casting an aluminum alloy ingot, wherein the aluminum alloy ingot comprises the following chemical components in percentage by mass:
0 to 0.2% of Si, 0 to 0.3% of Fe, 0 to 0.1% of Mn, 0 to 0.10% of Cu, 0.15 to 0.35% of Cr, 0.02 to 0.05% of Ti, 0 to 0.10% of Zn, 2.2 to 2.5% of Mg, and the balance of Al and unavoidable impurities;
2) homogenizing the aluminum alloy ingot obtained in the step 1), hot rolling, first cold rolling, intermediate annealing and second cold rolling, annealing the finished product, and punching to obtain an aluminum alloy finished product, wherein the furnace gas temperature of the intermediate annealing is 400-450 ℃, and the heat treatment speed of the strip is 30-35 m/min; the furnace gas temperature of the finished product annealing is 320-380 ℃, and the heat treatment speed of the strip is 20-30 m/min.
2. The production method of 5052 aluminum alloy wafers for electric cooker liners according to claim 1, wherein the furnace gas temperature of the homogenization treatment in step 2) is 615 ± 10 ℃, the heat preservation time is 15-20 h, and the heat preservation temperature of the aluminum alloy ingot is as follows: keeping the temperature for 10-12 h at 550 +/-10 ℃.
3. The production method of the 5052 aluminum alloy wafer for the electric cooker liner according to claim 1, wherein the hot rolling start temperature is 480-510 ℃, and the finish rolling temperature is 280-330 ℃.
4. The production method of the 5052 aluminum alloy wafer for the electric cooker liner according to claim 3, wherein the hot rolling comprises hot rough rolling and hot finish rolling, the hot rough rolling transfer thickness is 18-20 mm, and the hot finish rolling down line thickness is 10-11 mm.
5. The production method of 5052 aluminum alloy wafer for electric cooker liner according to claim 1, wherein the thickness of the product obtained by the first cold rolling is 2.0-3.0 mm, and the thickness of the product obtained by the second cold rolling is 1.0-2.0 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911316096.1A CN110964955B (en) | 2019-12-19 | 2019-12-19 | Production method of 5052 aluminum alloy wafer for electric cooker liner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911316096.1A CN110964955B (en) | 2019-12-19 | 2019-12-19 | Production method of 5052 aluminum alloy wafer for electric cooker liner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110964955A CN110964955A (en) | 2020-04-07 |
| CN110964955B true CN110964955B (en) | 2021-09-07 |
Family
ID=70035112
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911316096.1A Active CN110964955B (en) | 2019-12-19 | 2019-12-19 | Production method of 5052 aluminum alloy wafer for electric cooker liner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110964955B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113881877A (en) * | 2021-10-09 | 2022-01-04 | 中铝西南铝板带有限公司 | Aluminum alloy strip and preparation method and application thereof |
| CN115011849A (en) * | 2022-05-13 | 2022-09-06 | 天津忠旺铝业有限公司 | 5-series aluminum alloy plate rolling process |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60238462A (en) * | 1984-05-11 | 1985-11-27 | Kobe Steel Ltd | Manufacture of superplastic aluminum alloy |
| JPS62177143A (en) * | 1986-01-30 | 1987-08-04 | Kobe Steel Ltd | Aluminum alloy sheet excellent in formability and baking hardening and its production |
| CN101935786A (en) * | 2010-08-16 | 2011-01-05 | 浙江巨科铝业有限公司 | Stabilizing processing method of 5052 aluminium alloy |
| CN103014454A (en) * | 2012-12-27 | 2013-04-03 | 亚洲铝业（中国）有限公司 | Production method of 5052-H34 aluminum alloy plate strip |
| CN103740989A (en) * | 2013-12-26 | 2014-04-23 | 中铝西南铝冷连轧板带有限公司 | 5052 aluminum alloy base material for anodes, and method for producing 5052 aluminum alloy base material |
| CN105483474A (en) * | 2015-12-21 | 2016-04-13 | 河南明泰铝业股份有限公司 | High-strength aluminum alloy deep-drawing bottle cap and production method thereof |
| CN106906390A (en) * | 2017-03-28 | 2017-06-30 | 山东南山铝业股份有限公司 | Aluminium alloy anode oxide plate and its production method |
| CN109972001A (en) * | 2019-03-29 | 2019-07-05 | 郑州明泰实业有限公司 | A kind of capacitor case 1100-O state aluminium alloy strips and its production method |
-
2019
- 2019-12-19 CN CN201911316096.1A patent/CN110964955B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60238462A (en) * | 1984-05-11 | 1985-11-27 | Kobe Steel Ltd | Manufacture of superplastic aluminum alloy |
| JPS62177143A (en) * | 1986-01-30 | 1987-08-04 | Kobe Steel Ltd | Aluminum alloy sheet excellent in formability and baking hardening and its production |
| CN101935786A (en) * | 2010-08-16 | 2011-01-05 | 浙江巨科铝业有限公司 | Stabilizing processing method of 5052 aluminium alloy |
| CN103014454A (en) * | 2012-12-27 | 2013-04-03 | 亚洲铝业（中国）有限公司 | Production method of 5052-H34 aluminum alloy plate strip |
| CN103740989A (en) * | 2013-12-26 | 2014-04-23 | 中铝西南铝冷连轧板带有限公司 | 5052 aluminum alloy base material for anodes, and method for producing 5052 aluminum alloy base material |
| CN105483474A (en) * | 2015-12-21 | 2016-04-13 | 河南明泰铝业股份有限公司 | High-strength aluminum alloy deep-drawing bottle cap and production method thereof |
| CN106906390A (en) * | 2017-03-28 | 2017-06-30 | 山东南山铝业股份有限公司 | Aluminium alloy anode oxide plate and its production method |
| CN109972001A (en) * | 2019-03-29 | 2019-07-05 | 郑州明泰实业有限公司 | A kind of capacitor case 1100-O state aluminium alloy strips and its production method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110964955A (en) | 2020-04-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101664792A (en) | Engineering process for producing low-iron low-silicon 3004 alloy by directly cast-rolling electrolytic aluminium liquid | |
| CN106119615B (en) | A kind of new energy resource power battery shell aluminium alloy strips and preparation method thereof | |
| CN103008342B (en) | Production method of 5052-H32 aluminum alloy plate-strip | |
| CN110923525B (en) | Preparation process of high-performance 7-series aluminum alloy sheet | |
| CN104294194B (en) | A kind of manufacture method improving 3104 aluminium alloy strips Erichsen numbers | |
| CN105063430A (en) | 3003-H16 aluminum alloy plate strip and production method thereof | |
| CN101899632B (en) | Production method of 3003 aluminum alloy deep-drawing wafer | |
| CN111560547A (en) | Preparation method of 5182-O-state aluminum alloy plate for automobile | |
| CN110964955B (en) | Production method of 5052 aluminum alloy wafer for electric cooker liner | |
| CN102888540B (en) | Aluminum foil for air conditioner having high heat exchange efficiency and manufacturing method thereof | |
| CN109097687B (en) | Preparation method of non-oriented silicon steel for direct-drive wind driven generator | |
| CN108396243B (en) | Hard tinned substrate for bottle cap and production method thereof | |
| CN105755333B (en) | A kind of preparation method of the slim cover aluminum alloy plate materials of pop can | |
| CN109868398B (en) | 6xxx series aluminum alloy plate with high flanging performance and preparation method thereof | |
| CN101912877B (en) | Method for deep-drawing 3140 aluminum alloy strip | |
| CN107177788B (en) | A kind of secondary cold-rolling tin plate and its production method | |
| CN104561668A (en) | Aluminum alloy sheet for wine cover material and production method of aluminum alloy sheet | |
| CN114262827A (en) | Aluminum alloy material with crater for mobile phone back plate and preparation method of aluminum alloy material | |
| CN114752821A (en) | Aluminum alloy strip for power battery shell and preparation method thereof | |
| CN110356069B (en) | Composite aluminum foil and preparation method thereof | |
| CN109554591B (en) | 5-series alloy plate strip for card support and manufacturing method thereof | |
| TW202033775A (en) | Method for manufacturing aluminum-manganese alloy | |
| CN108838206B (en) | Method for improving performance of aluminum stainless steel composite board and aluminum stainless steel composite board | |
| CN111041283B (en) | Production method of 3003 aluminum alloy wafer for deep-drawing expansion type electric cooker liner | |
| CN114657428A (en) | Processing technology and preparation method of improved refrigerator foaming die casting |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |