CN116512696A - Three-layer composite aluminum substrate for cooker and manufacturing method thereof - Google Patents
Three-layer composite aluminum substrate for cooker and manufacturing method thereof Download PDFInfo
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- CN116512696A CN116512696A CN202310597174.XA CN202310597174A CN116512696A CN 116512696 A CN116512696 A CN 116512696A CN 202310597174 A CN202310597174 A CN 202310597174A CN 116512696 A CN116512696 A CN 116512696A
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- 239000002131 composite material Substances 0.000 title claims abstract description 78
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 31
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 31
- 239000000758 substrate Substances 0.000 title claims abstract description 24
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 18
- 239000000463 material Substances 0.000 claims abstract description 61
- 239000010410 layer Substances 0.000 claims abstract description 59
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 44
- 238000013329 compounding Methods 0.000 claims abstract description 14
- 239000012792 core layer Substances 0.000 claims abstract description 10
- 229910045601 alloy Inorganic materials 0.000 claims description 33
- 239000000956 alloy Substances 0.000 claims description 33
- 238000000137 annealing Methods 0.000 claims description 33
- 238000000034 method Methods 0.000 claims description 26
- 238000005097 cold rolling Methods 0.000 claims description 25
- 238000005096 rolling process Methods 0.000 claims description 24
- 238000009792 diffusion process Methods 0.000 claims description 16
- 230000008569 process Effects 0.000 claims description 16
- 238000005520 cutting process Methods 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 5
- 239000000428 dust Substances 0.000 claims description 5
- 238000005498 polishing Methods 0.000 claims description 5
- 238000003490 calendering Methods 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 230000009467 reduction Effects 0.000 claims description 3
- 238000004364 calculation method Methods 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims description 2
- 238000009966 trimming Methods 0.000 claims description 2
- 238000004804 winding Methods 0.000 claims description 2
- 239000010935 stainless steel Substances 0.000 abstract description 12
- 229910001220 stainless steel Inorganic materials 0.000 abstract description 11
- 238000012546 transfer Methods 0.000 abstract description 5
- 239000007769 metal material Substances 0.000 abstract description 3
- 239000002356 single layer Substances 0.000 abstract description 2
- 238000001816 cooling Methods 0.000 description 9
- 239000011162 core material Substances 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 238000005098 hot rolling Methods 0.000 description 3
- 239000010985 leather Substances 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000007731 hot pressing Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005338 heat storage Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 229910001256 stainless steel alloy Inorganic materials 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/01—Layered products comprising a layer of metal all layers being exclusively metallic
- B32B15/016—Layered products comprising a layer of metal all layers being exclusively metallic all layers being formed of aluminium or aluminium alloys
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
The invention provides a three-layer composite aluminum base plate for cookers and a manufacturing method thereof, wherein the three-layer composite aluminum base plate is used for replacing single-layer 3003 type aluminum alloy and is compounded with a stainless steel material of a skin layer to prepare the five-layer metal material composite cookers. The three-layer aluminum substrate is mainly formed by compounding a core layer 3003 type aluminum alloy with a 1050 or 1060 type 1 aluminum alloy. Because the heat transfer efficiency of the 1 series aluminum alloy is higher than that of the 3003 type aluminum alloy, and the aluminum alloy is easier to combine with stainless steel, the three-layer aluminum alloy composite substrate has more excellent composite strength with the five-layer composite product formed by the cortex aluminum alloy or the stainless steel.
Description
Technical Field
The invention relates to a three-layer composite aluminum substrate for cookers and a manufacturing method thereof, belonging to the technical field of aluminum composite calendaring manufacturing.
Background
With the improvement of living standard, the performance requirements of people on the cooker are higher and higher, and the variety requirements are richer. At present, products such as stainless steel cookers, such as pressure cookers, common woks and the like are made of multiple layers of metal materials in a composite mode. The composite cooker has the characteristics of higher strength, high heat transfer, heat storage, soaking, magnetism transfer and the like, and is favored by the market.
The middle layer of the stainless steel composite cooker is mainly 3003 aluminum alloy with better deep drawing performance and higher mechanical strength, and the outer layer stainless steel material is generally composed of 430 with better magnetic conductivity and 304 with better corrosion resistance. The combination of stainless steel and aluminum alloy is generally carried out by adopting a combination mode such as sheet hot pressing, hot rolling and the like. However, the composite strength between 3003 type aluminum alloy and stainless steel is not high, partial weak bonding and even layering easily occur between stainless steel and aluminum in the cooker manufacturing and stretching process, and uneven heat transfer of the cooker product and even scrapping of the product are caused. Meanwhile, the hot rolling composite production efficiency is lower, the flow is longer, the thickness and size precision is not easy to control, and the cost is higher.
Disclosure of Invention
In order to solve the problems, the invention adopts the three-layer aluminum alloy composite substrate to replace a single-layer 3003 aluminum alloy, and the three-layer aluminum alloy composite substrate is compounded with a stainless steel material of a skin layer to prepare the five-layer metal material composite cooker. The three-layer aluminum substrate is mainly formed by compounding a core layer 3003 type aluminum alloy with a 1050 or 1060 type 1 aluminum alloy. Because the heat transfer efficiency of the 1 series aluminum alloy is higher than that of the 3003 type aluminum alloy, and the aluminum alloy is easier to combine with stainless steel, the three-layer aluminum alloy composite substrate has more excellent composite strength with the five-layer composite product formed by the cortex aluminum alloy or the stainless steel.
In addition, the invention provides a continuous composite production method of three-layer composite aluminum for cookers by cold rolling at normal temperature, which has the advantages of small equipment investment, short production flow, low energy consumption, high efficiency and the like, and the produced three-layer composite aluminum substrate can be directly used as a cooker product.
In order to solve the technical problems, the invention adopts the following technical scheme:
the three-layer composite aluminum substrate for the cooker is characterized in that a skin layer of the three-layer composite aluminum substrate is a 1-series aluminum alloy layer, a core layer of the three-layer composite aluminum substrate is 3003 alloy, the thickness of the skin layer aluminum alloy accounts for 15-25% of the total thickness of the three-layer composite plate, and the three-layer composite aluminum substrate for the cooker is produced by adopting a normal-temperature continuous cold rolling composite process method.
A manufacturing method of a three-layer composite aluminum base plate for cookers comprises the following steps:
1) Respectively selecting 1 series and 3003 aluminum alloy rolls with proper widths, and rolling to set thickness in a traditional rolling mode to manufacture skin-layer and core-layer aluminum alloy blanks;
2) Heat-treating the 1-series aluminum alloy skin layer and 3003 aluminum alloy core blank in the step 1) into a soft state for coiled materials;
3) Respectively uncoiling the 1-series aluminum alloy skin layer and 3003-series aluminum alloy core layer coiled materials subjected to the heat treatment in the step 2), mechanically polishing the surface to be compounded, cleaning surface abrasive dust, sequentially superposing, centering, tiling and feeding the coiled materials into a roll gap of a cold rolling mill, and continuously rolling and compounding the coiled materials at normal temperature through single-pass larger rolling reduction to prepare a preliminarily combined composite blank coil;
4) Performing diffusion annealing treatment on the cold-rolled composite blank coil obtained in the step 3);
5) Carrying out conventional cold rolling and calendaring on the blank coil obtained in the step 4) after diffusion annealing to obtain the thickness of a finished product;
6) And 5) carrying out finished annealing on the finished product thickness composite material obtained in the step 5), and then cutting to obtain a three-layer composite aluminum substrate finished product.
Further, in the step 1), the thickness of the 1 series aluminum alloy skin layer accounts for 15-25% of the total thickness of the three-layer composite board, the total thickness is obtained by back calculation according to the processing rate of 60-70% of the thickness of the finished product of the composite base board, the total width is determined according to the blanking size of the cooker or the double-length trimming amount of the cooker, and the 1 series aluminum alloy skin layer is required to be less than or equal to 3003 core layer width 20mm.
Further, the single-pass secondary pressing amount in the step 3) is 40-50%, and the continuous rolling and compounding process is rolling with tension winding and unwinding at a stable speed, and the compounding speed is 3-25m/min.
Further, in the step 4), the diffusion annealing process is carried out at 300-350 ℃ for 4-6 hours, and then the temperature is reduced to the room temperature.
Compared with the prior art, the invention has the beneficial effects that:
the normal-temperature cold rolling continuous composite production method provided by the invention has the advantages of small equipment investment, short production flow, low energy consumption, high efficiency and the like, and compared with a finished product produced by a hot-pressing or hot-rolling composite method, the interlayer coating ratio of three-layer components is uniform in the length and width directions, the fluctuation is less than or equal to +/-1%, and the production process of cold rolling deformation after normal-temperature cold rolling composite diffusion annealing is adopted, so that the prepared composite aluminum substrate has the advantages of high bonding strength, good stamping performance, good surface quality, accurate size, stable performance and the like, is suitable for mass and high-efficiency production, and is a processing technology with more, more speed and better conservation.
Detailed Description
The invention will be further illustrated with reference to examples.
Embodiment one: (1 series aluminum alloy skin layer ratio 15%)
(1) Preparing a coiled material to be compounded: rolling 1050 alloy coiled material and 3003 alloy coiled material with intermediate thickness to be compounded according to a traditional cold rolling method to respectively serve as blanks of a surface material (or a skin material) and a base material (or a core material), wherein the width of the 1050 alloy coiled material is as follows: 1200 mm, thickness: 0.8 mm,3003 alloy coil width: 1220mm, thickness: 3.6 mm, and completely annealing to be in a soft state for standby;
(2) Continuous compound rolling of cold rolling at normal temperature: respectively uncoiling annealed soft 1050 alloy coiled materials, 3003 alloy coiled materials and 1050 alloy coiled materials in sequence, mechanically polishing a surface to be compounded and cleaning surface abrasive dust, sequentially superposing, centering and tiling, feeding the annealed soft 1050 alloy coiled materials, 3003 alloy coiled materials and 1050 alloy coiled materials into a roll gap of a cold rolling mill, wherein the single-pass subpressing amount is about 40%, namely, the outlet thickness is 3.1mm, the cold rolling compounding speed is 5m/min, the uncoiling tension of leather is 8KN, the uncoiling tension of base material is 25KN, the coiling tension of the composite material is 30KN, and the roll is lubricated and cooled during continuous rolling compounding to prepare a primarily combined composite blank coil; removing cutting;
(3) Diffusion annealing treatment: carrying out diffusion annealing on the cold-rolled composite blank, wherein the annealing process comprises the following steps: keeping the temperature at 300 ℃ for 6 hours, and then cooling to room temperature;
(4) Conventional cold rolling: the blanks after diffusion annealing are respectively rolled to the thickness of 2.1mm of a finished product, the rolling process is put into a plate type plate thickness automatic control system, the surface of the finished product is purged completely, and the oil content of the strip is controlled;
(5) And (3) annealing a finished product: and (3) carrying out finished product annealing on the finished product thickness material obtained in the step (4), wherein the finished product annealing process is to keep the temperature at 380 ℃ for 6 hours, cooling to 200 ℃, discharging, completely cooling to room temperature, and cutting to obtain the finished product.
The method is characterized in that the finished product performance and the composite ratio of the finished product composite aluminum-based plate material produced by the process are detected, the average tensile strength of the measured result is 80MPa, the elongation is 32%, the composite ratio of the pure aluminum layer is 15.46% and 15.18%, and compared with the composite plate material produced by the conventional method, the finished product has the characteristics of good punching performance, more accurate composite ratio control and the like.
Embodiment two: (1 series aluminum alloy skin layer 25%)
(1) Preparing a coiled material to be compounded: rolling 1050 alloy and 3003 alloy coiled materials with intermediate thickness to be compounded according to a traditional cold rolling method to obtain blanks of surface materials (or skin materials) and base materials (or core materials), wherein the width of the 1050 alloy coiled materials is as follows: 1200 mm, thickness: 0.8 mm,3003 alloy coil width: 1220mm, thickness: 3.6 mm, and completely annealing to be in a soft state for standby;
(2) Continuous compound rolling of cold rolling at normal temperature: respectively uncoiling annealed soft 1050 alloy coiled materials, 3003 alloy coiled materials and 1050 alloy coiled materials in sequence, mechanically polishing a surface to be compounded and cleaning surface abrasive dust, sequentially superposing, centering and spreading the annealed soft 1050 alloy coiled materials, feeding the annealed soft 1050 alloy coiled materials, 3003 alloy coiled materials and 1050 alloy coiled materials into a roll gap of a cold rolling mill, wherein the single-pass secondary pressing amount is about 40%, namely, the outlet thickness is 2.3mm, the maximum cold rolling compounding speed is 10m/min, the uncoiling tension of leather is 8KN, the uncoiling tension of base material is 33KN, the coiling tension of composite material is 28KN, and the roll is lubricated and cooled during continuous rolling compounding to prepare a preliminarily combined composite blank coil;
(3) Diffusion annealing treatment: carrying out diffusion annealing on the cold-rolled composite blank, wherein the annealing process comprises the following steps: keeping the temperature at 300 ℃ for 6 hours, and then cooling to room temperature;
(4) Conventional cold rolling: the blanks after diffusion annealing are respectively rolled to the thickness of 2.1mm of a finished product, the rolling process is put into a plate type plate thickness automatic control system, the surface of the finished product is purged completely, and the oil content of the strip is controlled;
(5) And (3) annealing a finished product: and (3) carrying out finished product annealing on the finished product thickness material obtained in the step (4), wherein the finished product annealing process is to keep the temperature at 380 ℃ for 6 hours, cooling to 200 ℃, discharging, completely cooling to room temperature, and cutting to obtain the finished product.
And detecting the finished product performance and the composite ratio of the finished product composite aluminum-based plate material produced by the process, wherein the average tensile strength of the measured result is 105MPa, the elongation is 30%, and the composite ratio of the measured result to the pure aluminum layer is 12.5% and 12.5%, and compared with the composite plate material produced by the conventional method, the finished product has the characteristics of good stamping performance, more accurate composite ratio control and the like.
Embodiment III: (1 series aluminum alloy skin layer accounting for 20%)
(1) Preparing a coiled material to be compounded: rolling 1050 alloy and 3003 alloy coiled materials with intermediate thickness to be compounded according to a traditional cold rolling method to obtain blanks of surface materials (or skin materials) and base materials (or core materials), wherein the width of the 1050 alloy coiled materials is as follows: 1200 mm, thickness: 0.8 mm,3003 alloy coil width: 1220mm, thickness: 3.6 mm, and completely annealing to be in a soft state for standby;
(2) Continuous compound rolling of cold rolling at normal temperature: respectively uncoiling annealed soft 1050 alloy coiled materials, 3003 alloy coiled materials and 1050 alloy coiled materials in sequence, mechanically polishing a surface to be compounded and cleaning surface abrasive dust, sequentially superposing, centering and tiling, feeding the annealed soft 1050 alloy coiled materials, 3003 alloy coiled materials and 1050 alloy coiled materials into a roll gap of a cold rolling mill, wherein the single-pass subpressing amount is about 50%, namely, the outlet thickness is 2.0mm, the maximum cold rolling compounding speed is 10m/min, the uncoiling tension of leather is 8KN, the uncoiling tension of a base material is 33-37KN, the coiling tension of the composite material is 28KN, and the roll is lubricated and cooled during continuous rolling compounding to prepare a preliminarily combined composite blank coil;
(3) Diffusion annealing treatment: carrying out diffusion annealing on the cold-rolled composite blank, wherein the annealing process comprises the following steps: keeping the temperature at 300 ℃ for 6 hours, and then cooling to room temperature;
(4) Conventional cold rolling: the blanks after diffusion annealing are respectively rolled to the thickness of 2.1mm of a finished product, the rolling process is put into a plate type plate thickness automatic control system, the surface of the finished product is purged completely, and the oil content of the strip is controlled;
(5) And (3) annealing a finished product: and (3) carrying out finished product annealing on the finished product thickness material obtained in the step (4), keeping the temperature of the finished product annealing process at 380 ℃ for 6 hours, cooling to 200 ℃, discharging, completely cooling to room temperature, and cutting to obtain the finished product.
And detecting the finished product performance and the composite ratio of the finished product composite aluminum-based plate material produced by the process, wherein the average tensile strength of the measured result is 103MPa, the elongation is 30%, and the composite ratio of the measured result to the pure aluminum layer is 10.0% and 10.0%, and compared with the composite plate material produced by the conventional method, the finished product has the characteristics of good stamping performance, more accurate composite ratio control and the like.
The foregoing is only a preferred embodiment of the invention, it being noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present invention, and such modifications and adaptations are intended to be comprehended within the scope of the invention.
Claims (5)
1. The three-layer composite aluminum substrate for the cooker is characterized in that a skin layer of the three-layer composite aluminum substrate is a 1-series aluminum alloy layer, a core layer of the three-layer composite aluminum substrate is 3003 alloy, the thickness of the skin layer aluminum alloy accounts for 15-25% of the total thickness of the three-layer composite aluminum substrate, and the three-layer composite aluminum substrate for the cooker is produced by adopting a normal-temperature continuous cold rolling composite process method.
2. The method for manufacturing a three-layer composite aluminum substrate for cookers as claimed in claim 1, comprising the steps of:
1) Respectively selecting 1 series and 3003 aluminum alloy rolls with proper widths, and rolling to set thickness in a traditional rolling mode to manufacture skin-layer and core-layer aluminum alloy blanks;
2) Heat-treating the 1-series aluminum alloy skin layer and 3003 aluminum alloy core blank in the step 1) into a soft state for coiled materials;
3) Respectively uncoiling the 1-series aluminum alloy skin layer and 3003-series aluminum alloy core layer coiled materials subjected to the heat treatment in the step 2), mechanically polishing the surface to be compounded, cleaning surface abrasive dust, sequentially superposing, centering, tiling and feeding the coiled materials into a roll gap of a cold rolling mill, and continuously rolling and compounding the coiled materials at normal temperature through single-pass larger rolling reduction to prepare a preliminarily combined composite blank coil;
4) Performing diffusion annealing treatment on the cold-rolled composite blank coil obtained in the step 3);
5) Carrying out conventional cold rolling and calendaring on the blank coil obtained in the step 4) after diffusion annealing to obtain the thickness of a finished product;
6) And 5) carrying out finished annealing on the finished product thickness composite material obtained in the step 5), and then cutting to obtain a three-layer composite aluminum substrate finished product.
3. The manufacturing method according to claim 2, wherein in the step 1), the thickness of the 1-series aluminum alloy skin layer accounts for 15-25% of the total thickness of the three-layer composite board, the total thickness is obtained by back calculation according to the processing rate of 60-70% of the thickness of the finished substrate after the composite, the total width is determined according to the blanking size of the cooker or the double-length trimming amount thereof, and the 1-series aluminum alloy skin layer is required to be less than or equal to 3003 core layer width of 20mm.
4. The method according to claim 2, wherein the single pass reduction in step 3) is 40-50%, and the continuous rolling and compounding process is rolling and compounding with tension winding and unwinding at a steady speed of 3-25m/min.
5. The method according to claim 2, wherein the diffusion annealing process in step 4) is performed at 300 ℃ to 350 ℃ for 4 to 6 hours, and then the temperature is lowered to room temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310597174.XA CN116512696A (en) | 2023-05-25 | 2023-05-25 | Three-layer composite aluminum substrate for cooker and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310597174.XA CN116512696A (en) | 2023-05-25 | 2023-05-25 | Three-layer composite aluminum substrate for cooker and manufacturing method thereof |
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| Publication Number | Publication Date |
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| CN116512696A true CN116512696A (en) | 2023-08-01 |
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| CN202310597174.XA Pending CN116512696A (en) | 2023-05-25 | 2023-05-25 | Three-layer composite aluminum substrate for cooker and manufacturing method thereof |
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| Country | Link |
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| CN (1) | CN116512696A (en) |
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- 2023-05-25 CN CN202310597174.XA patent/CN116512696A/en active Pending
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