CN117207482A - Plastic steel production process and plastic steel - Google Patents
Plastic steel production process and plastic steel Download PDFInfo
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- CN117207482A CN117207482A CN202311272192.7A CN202311272192A CN117207482A CN 117207482 A CN117207482 A CN 117207482A CN 202311272192 A CN202311272192 A CN 202311272192A CN 117207482 A CN117207482 A CN 117207482A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 74
- 239000010959 steel Substances 0.000 title claims abstract description 74
- 229920003023 plastic Polymers 0.000 title claims abstract description 58
- 239000004033 plastic Substances 0.000 title claims abstract description 58
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 34
- 238000001125 extrusion Methods 0.000 claims abstract description 50
- 239000002994 raw material Substances 0.000 claims abstract description 43
- 238000005096 rolling process Methods 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 claims abstract description 15
- 238000010438 heat treatment Methods 0.000 claims abstract description 14
- 238000001816 cooling Methods 0.000 claims abstract description 11
- 238000003466 welding Methods 0.000 claims abstract description 11
- 238000004826 seaming Methods 0.000 claims abstract description 6
- 238000007493 shaping process Methods 0.000 claims abstract description 6
- 238000007781 pre-processing Methods 0.000 claims abstract description 3
- 239000000463 material Substances 0.000 claims description 26
- 229910052751 metal Inorganic materials 0.000 claims description 14
- 239000002184 metal Substances 0.000 claims description 14
- 230000001360 synchronised effect Effects 0.000 claims description 7
- 238000004140 cleaning Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 230000007797 corrosion Effects 0.000 abstract description 3
- 238000005260 corrosion Methods 0.000 abstract description 3
- 230000002411 adverse Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 abstract description 2
- 239000002699 waste material Substances 0.000 abstract description 2
- 238000003892 spreading Methods 0.000 abstract 1
- 239000000047 product Substances 0.000 description 17
- 239000004800 polyvinyl chloride Substances 0.000 description 16
- 229920000915 polyvinyl chloride Polymers 0.000 description 15
- 230000002159 abnormal effect Effects 0.000 description 4
- 238000007666 vacuum forming Methods 0.000 description 4
- 239000004088 foaming agent Substances 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000003063 flame retardant Substances 0.000 description 2
- YUWBVKYVJWNVLE-UHFFFAOYSA-N [N].[P] Chemical compound [N].[P] YUWBVKYVJWNVLE-UHFFFAOYSA-N 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000000326 ultraviolet stabilizing agent Substances 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
Landscapes
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention relates to the technical field of plastic steel window frame manufacturing, in particular to a plastic steel production process and plastic steel, which comprises the following steps: s1, preprocessing raw materials; s2, feeding and rolling; s3, welding and heating the profile or heating the profile seaming; s4, drawing the profile; s5, co-extrusion molding; s6, traction shaping; s7, cooling. The plastic steel produced by the method has the advantages of rigidity, difficult deformation and damage, corrosion resistance, difficult corrosion resistance, reduced maintenance cost, fire resistance, capability of providing additional safety guarantee when a fire breaks out, prolonging escape time and reducing the risk of fire spreading, capability of reducing adverse effect on environment, no need of frequent replacement and reduction of waste materials.
Description
Technical Field
The invention relates to the technical field of plastic steel window frame manufacturing, in particular to a plastic steel production process and plastic steel.
Background
Plastic-steel window frames are a building material widely used in construction and house finishing. The conventional manufacturing method generally uses polyvinyl chloride (PVC) resin as a main raw material and is manufactured through an extrusion process, and one common method is to use a process of pressing profile steel and PVC pipe together through a foaming agent to form a door and window structure, however, the profile steel and PVC pipe pressed through the foaming agent generally cannot form a whole structure with enough rigidity, which may cause the problem that the window frame has insufficient rigidity in use, and affects the wind resistance, impact resistance and other properties thereof, and in addition, the conventional plastic steel window frame has the problem that the foaming agent and the additive affect the fire resistance of PVC, so that the plastic steel window frame is easier to burn, and has poor fire resistance.
Disclosure of Invention
In order to solve the problems of insufficient overall rigidity and poor fire resistance of the existing plastic steel window frame manufactured by the prior art, the invention provides a plastic steel production process and plastic steel.
The invention is realized by the following technical scheme:
a plastic steel production process comprises the following steps:
s1, preprocessing raw materials, namely cleaning the surface of a metal raw material by a cleaning device and flattening the surface of the metal raw material by an automatic flattening machine;
s2, feeding and rolling, wherein the pretreated metal raw material enters a rolling mill for rolling, and the rolling mill adopts different rollers;
s3, welding and heating the profile or heating the profile seaming, welding the seam by the rolled metal raw material through a welding machine to form a profile or locking the seam through a seaming process to form the profile, and heating the surface of the profile at a high temperature;
s4, drawing the profile, wherein the heated profile enters a co-extrusion die through drawing, one end of the co-extrusion die is connected with an extruder, the drawing speed 1 is synchronous with the feeding raw material speed of the extruder, and the extruder is used for feeding PVC raw materials;
s5, co-extrusion molding, wherein the profile enters a co-extrusion die of co-extrusion equipment, PVC raw materials enter the co-extrusion die of the co-extrusion equipment through an extruder, the profile and the PVC raw materials are co-extruded at high temperature and high pressure to form plastic steel, and the co-extrusion die consists of a plurality of layers of templates;
s6, traction shaping, wherein the plastic steel enters a vacuum shaping machine through traction, and the traction rate 2 is synchronous with the traction rate 1 of the profile into the co-extrusion die;
s7, cooling, wherein the shaped plastic steel is cooled by water cooling.
Further, the metal raw material in the step S1 is strip steel, and the thickness of the strip steel is 1mm-3mm.
Further, the rolling mill adopted in the step S2 comprises more than 70 groups of rollers, the shapes of the rollers are molds of the section of the needed profiled bar, the plurality of groups of rollers are arranged according to the profile changing process, a roller way is arranged below the rollers, and the metal raw material is located between the rollers and the roller way.
Further, in the step S3, the rolled profile is welded and closed by a laser welding machine to form a tubular profile, and the surface of the profile is heated at a high temperature by a heating device.
Further, the step S4 comprises a tractor and an extruder, wherein the tractor and the extruder realize speed synchronization through numerical control, and the tractor provides traction force for the profile to enter the co-extrusion die and traction force for the plastic steel to enter the vacuum setting machine.
Further, the PVC raw material in the step S5 is mixed with a fireproof material, and the fireproof material accounts for 10% -40% of the PVC raw material.
Further, the co-extrusion die in step S5 comprises 5 layers of templates, 5 layers of templates are welded in sequence, mutually aligned cavity holes are formed in the middle of each layer of templates, flow passages are formed in non-adjacent templates, extend from outside to inside and are communicated with the cavity holes, and a plurality of small through holes are formed in each layer of templates.
Further, the front fixed connection feed inlet of the 1 st layer template in the coextrusion mould, the feed inlet align and be used for getting into the profiled bar with the die cavity hole, the front of 1 st layer template is provided with first feed inlet, first feed inlet slope sets up, the runner intercommunication that sets up in first feed inlet and the 1 st layer template, the top border of 4 th layer template is provided with the second feed inlet, the second feed inlet sets up perpendicularly, the runner intercommunication that sets up in second feed inlet and the 4 th layer template.
Further, in the step S5, the temperature range required by the operation of the co-extrusion die is 200-900 ℃, and the pressure range is 1bar-30bar.
The invention also provides a plastic steel which is manufactured by adopting the plastic steel production process.
The invention has the beneficial effects that:
(1) According to the plastic steel production process, the metal raw materials are directly rolled through the rollers with different shapes and different arrangements, and are welded into the special-shaped material through laser, so that the overall rigidity and structural stability of the window frame are ensured;
(2) According to the plastic steel production process provided by the invention, the surface of the profile is heated in advance through the heating device and then fed into the co-extruder for co-extrusion, and the surface of the profile can be more easily deformed in the co-extrusion die by preheating, so that the energy consumption and mechanical pressure during co-extrusion are reduced, the production efficiency is improved, and the production period is shortened;
(3) According to the plastic steel production process provided by the invention, the tractor and the extruder are synchronized through numerical control, so that the co-extrusion product can be uniformly drawn in the co-extrusion die, the uniformity of the product is kept, the co-extrusion product is prevented from deforming or warping in the drawing process, the plastic steel production process is suitable for the co-extrusion product with a complex shape, and the drawing force and the shape of the product can be accurately controlled;
(4) According to the plastic steel production process, the mold formed by the multi-layer templates can be used for manufacturing a co-extrusion product with a more complex shape, and each layer of template can be provided with different shapes and holes, so that the co-extrusion molding can cope with various complex product designs, and meanwhile, better dimensional control can be provided for the mold, the dimensional accuracy of the co-extrusion product is ensured, and the risk of dimensional change is reduced;
(5) According to the plastic steel production process provided by the invention, the combination of different materials can be provided through the die of the multi-layer template, so that the special performance requirements of products, such as strength, heat insulation and the like, can be met;
(6) According to the plastic steel production process provided by the invention, the fireproof material is added into the PVC raw material, so that the fireproof performance of the plastic steel product can be obviously improved, and the safety standard and specification requirements of the building industry are met;
(7) The plastic steel provided by the invention has the advantages that the whole plastic steel is not easy to deform and damage, has corrosion resistance and is not easy to corrode, the maintenance cost is reduced, the plastic steel has fire resistance, extra safety guarantee can be provided when a fire disaster breaks out, the escape time is prolonged, the risk of fire spread is reduced, in addition, the adverse effect on the environment can be reduced, frequent replacement is not needed, and the generation of waste materials is reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments will be briefly described below, it will be apparent that the drawings in the following description are only some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a block diagram of a plastic steel production process according to an embodiment of the present invention;
FIG. 2 is a schematic view of a roll structure of a plastic steel manufacturing process according to an embodiment of the present invention;
FIG. 3 is a schematic view of a co-extrusion die for a plastic steel production process according to an embodiment of the present invention;
in the figure, a 1-roller, a 2-roller way, a 3-feeding port, a 4-first feeding port and a 5-second feeding port are arranged.
Detailed Description
For the purpose of making apparent the objects, technical solutions and advantages of the present invention, the present invention will be further described in detail with reference to the following examples and the accompanying drawings, wherein the exemplary embodiments of the present invention and the descriptions thereof are for illustrating the present invention only and are not to be construed as limiting the present invention.
Example 1
The embodiment provides a concrete implementation mode of plastic steel production technology.
Referring to fig. 1, a plastic steel production process includes the steps of:
1. pretreatment of raw materials: selecting a metal raw material, namely strip steel with the thickness of 1-3 mm is adopted in the embodiment, the strip steel is placed at the front end of a production line in a roll form, the strip steel is firstly sent into a cleaning device through an automatic feeder, the surface of the strip steel is cleaned through the cleaning device to remove dirt and impurities, and the surface of the strip steel is flattened through an automatic flattening machine to ensure the surface to be smooth;
2. and (3) feeding and rolling: the pretreated strip steel enters a rolling mill, the rolling mill adopts different rollers 1, the shape of the rollers 1 is determined according to a mould of the section of the required profiled bar, the rolling mill comprises more than 70 groups of rollers 1, the rollers 1 are arranged according to the profile changing process, a roller way 2 is arranged below the rollers 1, and the strip steel is positioned between the rollers 1 and the roller way 2 so as to roll and shape;
3. profile welding heating or seaming heating: the rolled strip steel is welded with the gaps of the rolled profile through a laser welding machine to form a tubular profile, or the edges of the two adjacent sides of the strip steel are bent or rolled up to be mutually locked, so that a tubular profile is formed, and then the profile is preheated at a high temperature through a heating device to improve the plasticity of the profile;
4. drawing the profile: the preheated profile enters a coextrusion die through a tractor, one end of the coextrusion die is connected with an extruder, two extruders are adopted to respectively supply raw materials to the coextrusion die, one extruder is used for supplying PVC raw materials containing fireproof materials, the other extruder is used for supplying materials containing ultraviolet-proof materials, the traction rate 1 provided by the tractor is synchronous with the feeding raw material rate of the extruder, and it is clear that the fireproof materials and the ultraviolet-proof materials described in the embodiment are all common names of the existing materials and at least comprise brominated flame retardants, nitrogen-phosphorus flame retardants and aluminum hydroxide, and ultraviolet absorbers or ultraviolet stabilizers;
5. co-extrusion molding: the special-shaped material enters a co-extrusion die, the PVC raw material and the ultraviolet-proof material also enter the co-extrusion die, the special-shaped material is combined with the PVC raw material and the ultraviolet-proof material through high temperature and high pressure for co-extrusion, the co-extrusion die adopted in the embodiment is a five-layer co-extrusion die, a plurality of runners are arranged in the die and connected to specific positions of each layer of templates, the runners are required to be determined according to the actual co-extrusion shape and complexity, the runners are used for guiding the material to flow and ensuring uniform distribution in the co-extrusion process, the die is applied with high temperature and high pressure in the co-extrusion process, the material is extruded and shaped, the high temperature is helpful for the material to flow, the high pressure is helpful for filling the material into all parts of the die, the temperature range is 200-900 ℃, and the pressure range is 1bar-30bar.
6. Traction shaping: the plastic steel gets into vacuum forming machine through the tractor, and traction rate 2 and profile get into the traction rate 1 in the coextrusion mould and synchronize, and vacuum forming machine can ensure that shape and size of plastic steel are accurate, and vacuum forming machine adopts vacuum adsorption's mode to design the coextrusion product, and after the plastic steel got into forming machine, the machine can establish a vacuum environment, reduces atmospheric pressure in confined space promptly, and after vacuum forming machine established vacuum environment, the surface of plastic steel can be adsorbed to the surface of mould or forming machine. This helps to ensure that the co-extruded product takes the desired shape and remains in that shape, and in addition helps to exclude bubbles and air from the co-extruded product, thereby reducing the formation of bubbles inside the product, which can improve the density and quality of the product;
7. and (3) cooling: the shaped plastic steel is cooled by water cooling to stabilize the structure, and the shrinkage rate of the material can be influenced by controlling the cooling speed and temperature, so that the shrinkage of the product can be reduced or increased by controlling the cooling process, namely the shrinkage of the plastic steel is controlled, the accuracy of the size of the final product is ensured, and the water cooling adopted in the embodiment is a circulating water cooling device.
Example 2
This example proposes an embodiment of a rolling mill roll 1 on the basis of example 1.
Referring to fig. 2, a schematic diagram of a portion of a 70-group roll 1 is shown, the 70-group roll 1 is in a cylindrical structure, two ends of the roll 1 are respectively connected to two sides of the rolling mill in a rotating manner, one end of the roll 1 has an outer diameter larger than that of the other end of the roll 1, a drop (concave-convex portion) of the surface of the roll 1 is generated by the difference between the outer diameters of the two ends, each stage of roll 1 has a concave-convex portion or a convex portion of the surface of the roll 1 corresponding to a required shape, a roller way 2 is further arranged at the bottom of the roll 1, raw materials are gradually rolled between the roll 1 and the roller way 2 to gradually form a required abnormal section, and then the abnormal section is finally formed into a desired abnormal section after multi-stage rolling, in this embodiment, only the 70-group roll 1 is taken as an example, and it is clear that in practical application, the roll 1 can be increased or decreased according to the difference of the desired abnormal section.
Example 3
This example presents an implementation of a coextrusion die on the basis of example 1.
Referring to fig. 3, a co-extrusion die consists of multiple layers of templates, including 5 layers of templates, wherein cavity holes aligned with each other are arranged in the middle of each layer of templates, runners are arranged on non-adjacent templates, the runners extend from outside to inside and are communicated with the cavity holes, a plurality of small through holes are arranged on each layer of templates, in the embodiment, the front surface of a 1 st layer of template of the co-extrusion die is fixedly connected with a feed inlet, the feed inlet is aligned with the cavity holes and used for entering a profiled bar, the shape in the feed inlet is the same as that of the cavity holes, gaps exist between the profiled bar and the cavity holes, in the embodiment, the runner is arranged by adopting the 1 st layer of templates and the 4 th layer of templates, the front surface of the 1 st layer of templates is provided with a first feed inlet 4, the first feed inlet 4 is obliquely arranged, the oblique arrangement can guide the flow direction of PVC raw materials to the runners, reduce resistance and ensure that the raw materials can smoothly enter the die, this helps to avoid the problem of uneven or clogged raw material feeding, while during feeding bubbles or impurities may be mixed into the PVC raw material, by being inclined, the possibility of bubbles and impurities may be reduced, thereby improving the product quality, and the inclined feed port helps to ensure an even distribution of the PVC raw material in the runner, thereby uniformly filling the various parts of the die during co-extrusion, the first feed port 4 communicating with the runner provided in the layer 1 die plate, the top edge of the layer 4 die plate being provided with a second feed port 5, the second feed port 5 being vertically arranged, the vertical arrangement being capable of changing the flow direction of the materials, preventing mixing between the different materials, and ensuring that the uv-shielding material enters the runner or the die in a vertical manner, which helps to distinguish the runners of the different materials, the second supply port 5 is communicated with a runner arranged in the 4 th layer of templates.
The foregoing has shown and described the basic principles and main features of the present invention and the advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The plastic steel production process is characterized by comprising the following steps of:
s1, preprocessing raw materials, namely cleaning the surface of a metal raw material by a cleaning device and flattening the surface of the metal raw material by an automatic flattening machine;
s2, feeding and rolling, wherein the pretreated metal raw material enters a rolling mill for rolling, and the rolling mill adopts different rollers;
s3, welding and heating the profile or heating the profile seaming, welding the seam by the rolled metal raw material through a welding machine to form a profile or locking the seam through a seaming process to form the profile, and heating the surface of the profile at a high temperature;
s4, drawing the profile, wherein the heated profile enters a co-extrusion die through drawing, one end of the co-extrusion die is connected with an extruder, the drawing speed 1 is synchronous with the feeding raw material speed of the extruder, and the extruder is used for feeding PVC raw materials;
s5, co-extrusion molding, wherein the profile enters a co-extrusion die of co-extrusion equipment, PVC raw materials enter the co-extrusion die of the co-extrusion equipment through an extruder, the profile and the PVC raw materials are co-extruded at high temperature and high pressure to form plastic steel, and the co-extrusion die consists of a plurality of layers of templates;
s6, traction shaping, wherein the plastic steel enters a vacuum shaping machine through traction, and the traction rate 2 is synchronous with the traction rate 1 of the profile into the co-extrusion die;
s7, cooling, wherein the shaped plastic steel is cooled by water cooling.
2. The plastic steel production process according to claim 1, wherein the metal raw material in the step S1 is strip steel, and the thickness of the strip steel is 1mm-3mm.
3. The plastic steel production process according to claim 1, wherein the rolling mill adopted in the step S2 comprises more than 70 groups of rollers, the shape of the rollers is a die with a section of a required profile, the plurality of groups of rollers are arranged according to the profile change process, a roller way is arranged below the rollers, and the metal raw material is positioned between the rollers and the roller way.
4. The process according to claim 1, wherein in step S3, the rolled profile is welded by a laser welding machine to form a tubular profile, or edges of two adjacent sides of the strip are bent or rolled to lock each other to form a tubular profile, and the surface of the profile is heated at high temperature by a heating device.
5. A process according to claim 1, characterized in that step S4 comprises a tractor and an extruder, the tractor and the extruder being synchronized in speed by numerical control, said tractor providing the traction of the profile into the co-extrusion die and the traction of the plastic steel into the vacuum setting machine.
6. A plastic steel production process according to claim 1, wherein the PVC raw material in step S5 is mixed with a fire-proof material, and the fire-proof material accounts for 10% -40% of the PVC raw material.
7. The plastic steel production process according to claim 1, wherein the co-extrusion die in the step S5 comprises 5 layers of templates, 5 layers of templates are welded in sequence, mutually aligned cavity holes are formed in the middle of each layer of templates, flow passages are formed in non-adjacent templates, extend from outside to inside and are communicated with the cavity holes, and a plurality of small through holes are formed in each layer of templates.
8. The plastic steel production process according to claim 7, wherein the front surface of the 1 st layer of the template in the co-extrusion die is fixedly connected with a feed inlet, the feed inlet is aligned with a cavity hole and is used for entering a profiled bar, the front surface of the 1 st layer of the template is provided with a first feed inlet, the first feed inlet is obliquely arranged and is communicated with a runner arranged in the 1 st layer of the template, the top edge of the 4 th layer of the template is provided with a second feed inlet, the second feed inlet is vertically arranged and is communicated with a runner arranged in the 4 th layer of the template.
9. The plastic steel production process according to claim 1, wherein the temperature required for the operation of the co-extrusion die in step S5 is 200-900 ℃ and the pressure is 1bar-30bar.
10. A plastic steel, characterized in that it is manufactured by the plastic steel production process according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311272192.7A CN117207482A (en) | 2023-09-28 | 2023-09-28 | Plastic steel production process and plastic steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311272192.7A CN117207482A (en) | 2023-09-28 | 2023-09-28 | Plastic steel production process and plastic steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117207482A true CN117207482A (en) | 2023-12-12 |
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ID=89048048
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311272192.7A Pending CN117207482A (en) | 2023-09-28 | 2023-09-28 | Plastic steel production process and plastic steel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117207482A (en) |
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2023
- 2023-09-28 CN CN202311272192.7A patent/CN117207482A/en active Pending
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