CN110835994A - Aluminum veneer and forming process thereof - Google Patents
Aluminum veneer and forming process thereof Download PDFInfo
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- CN110835994A CN110835994A CN201911216249.5A CN201911216249A CN110835994A CN 110835994 A CN110835994 A CN 110835994A CN 201911216249 A CN201911216249 A CN 201911216249A CN 110835994 A CN110835994 A CN 110835994A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F13/00—Coverings or linings, e.g. for walls or ceilings
- E04F13/07—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor
- E04F13/08—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements
- E04F13/0866—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements composed of several layers, e.g. sandwich panels or layered panels
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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Abstract
The invention discloses an aluminum veneer and a forming process thereof, and the aluminum veneer comprises a single-layer aluminum plate, reinforcing ribs, a PVDF fluorocarbon resin coating, a welding column welding nail and a hanging lug, wherein the middle part of the single-layer aluminum plate is provided with two mutually parallel convex reinforcing ribs, the welding column welding nail is arranged between the two reinforcing ribs, the surface layer of the single-layer aluminum plate is coated with the PVDF fluorocarbon resin coating, and the edge of the single-layer aluminum plate is fixedly connected with the hanging lug through a bolt. The basic structure of the aluminum veneer is preliminarily formed through plate shearing, stamping, bending, welding and assembling, then irradiation is utilized to excite the surface molecular activity of the aluminum veneer and chromizing is carried out, the strength of the chromizing layer is increased, the dead weight is light, the strength is high, and the forming method is simple, safe, environment-friendly and easy to realize industrial continuous and efficient production.
Description
Technical Field
The invention relates to the technical field of single aluminum plates, in particular to an aluminum single plate and a forming process thereof.
Background
The aluminum veneer is a building decoration material processed and formed by chromizing and the like and adopting a fluorocarbon spraying technology, and the fluorocarbon coating mainly comprises polyvinylidene fluoride resin (KANAR500), and is divided into three types of priming paint, finishing paint and varnish.
The invention patent with the patent number of CN201210147238.8 discloses a manufacturing process of a fluorocarbon aluminum veneer, which comprises the following process steps: sheet metal processing, degreasing for 1-10 minutes at 50-80 ℃, washing with water, pickling for 2-3 minutes at room temperature, washing with water, chromizing for 2-3 minutes at 80-90 ℃, washing with water, drying at the temperature of less than or equal to 60 ℃ to obtain a chemical treatment layer of 15-25 mu m, and spraying fluorocarbon primer to form a fluorocarbon primer layer, wherein the thickness is controlled to be 5-10 mu m; spraying fluorocarbon finish paint to form a fluorocarbon finish paint layer, controlling the thickness to be 25-30 mu m, leveling, spraying fluorocarbon finish paint to form a fluorocarbon finish paint layer, controlling the thickness to be 10-20 mu m, and drying at the temperature of 235-plus-one and 250 ℃ to obtain the fluorocarbon aluminum veneer. However, the strength of the aluminum single plate is low, and the pickling efficiency is low.
Disclosure of Invention
Aiming at the defects of the problems, the invention provides the aluminum veneer and the forming process thereof, which utilize irradiation to excite the surface molecular activity of the aluminum veneer and then chromize the aluminum veneer, thereby increasing the strength of the chromized layer, and the forming method has the advantages of light dead weight, high strength, simple, safe and environment-friendly property and easy realization of industrialized continuous high-efficiency production.
In order to achieve the purpose, the invention provides the following technical scheme:
an aluminum veneer comprises a single-layer aluminum plate, reinforcing ribs, a PVDF (polyvinylidene fluoride) fluorocarbon resin coating, welding column welding nails and hanging lugs, wherein the middle part of the single-layer aluminum plate is provided with two mutually parallel convex reinforcing ribs; the single-layer aluminum plate comprises a protective film, a varnish protective layer, a finish paint, a primary paint, a first aluminum chromizing film, an aluminum plate, a second aluminum chromizing film and a back paint which are sequentially arranged from top to bottom.
Preferably, the thickness of the aluminum plate is 2-4 mm.
Preferably, the PVDF fluorocarbon resin coating is a fluorocarbon polymer coating, and the fluorocarbon polymer coating contains 85% or more of KYNAH500 fluorocarbon resin.
The invention provides another technical scheme that: a forming process of an aluminum veneer comprises the following steps:
s1: shearing a plate; selecting an aluminum alloy panel with a certain thickness, cutting off a square at the four corners of the aluminum alloy panel, and forming edge strips at the edges of the rest aluminum alloy panels;
s2: performing tower punching; punching two round holes which are parallel to each other on each edge strip at the edge of the aluminum alloy panel;
s3: bending; bending the four edge strips in the same direction, wherein the bending angle is 90 degrees, and the oblique edges of the adjacent edge strips are mutually abutted;
s4: welding; welding the bevel edges of the adjacent edge strips, mounting two reinforcing ribs which are parallel to each other in the middle of the aluminum alloy panel, and welding column welding nails are welded in the middle of the two reinforcing ribs;
s5: assembling; the hanging lugs are connected to the edge strips in a locking mode by penetrating through the round holes through bolts;
s6: polishing; firstly, coarse grinding is carried out, and then fine grinding is carried out;
s7: acid washing; soaking the aluminum alloy panel in pickling solution at room temperature for 2min, performing ultrasonic treatment for 30 s-1 min, taking out the aluminum alloy panel, washing the aluminum alloy panel to be neutral by using ionized water, and drying, wherein each liter of pickling solution comprises the following raw materials in percentage by weight: 250mL of hydrochloric acid with the concentration of 12mol/L, 70mL of trisodium phosphate with the weight concentration of 85%, 70mL of hydrofluoric acid with the weight concentration of 40.0% and water;
s8: irradiating; coating oxalic acid solution on the surface of the aluminum alloy panel in the step S7, and then adopting the ion energy of 210keV and the beam current density of 200A/cm2Irradiating the surface of the aluminum alloy panel for 20-30 s by a high-current pulse ion beam consisting of the mixed ion beam with the pulse width of 45 ns;
s9: chromizing; and (3) placing the aluminum alloy panel in the step S8 in a chromizing liquid for chromizing for 2 minutes at 80 ℃, wherein each liter of the chromizing liquid comprises the following raw materials: 9g of phosphoric acid with the weight concentration of 85%, 7g of ammonium bifluoride, 35g of potassium permanganate and 3g of titanium chloride, and the raw materials are mixed with water to obtain a chromizing liquid;
s10: spraying; spraying primary paint and back paint on the surfaces of the first aluminum chromizing film and the second aluminum chromizing film respectively by using an atomizer, wherein the primary paint and the back paint are epoxy zinc-rich primer, spraying finish paint on the surface of the primary paint after the primary paint and the back paint are cooled, then spraying varnish on the surface of the finish paint to form a protective layer, spraying a layer of 0.4-2 mm silane rare earth composite protective film on the surface of the varnish protective layer, and finally spraying PVDF fluorocarbon resin on the surfaces of the protective film and the back paint.
Preferably, each liter of pickling solution comprises the following raw materials in percentage by weight: 250mL of hydrochloric acid with the concentration of 12mol/L, 70mL of trisodium phosphate with the weight concentration of 85%, 70mL of hydrofluoric acid with the weight concentration of 40.0%, 1-2% of pickling solution catalyst and water, wherein the pickling solution catalyst is 80-220 per mill of fatty alcohol-polyoxyethylene ether, 60-180 per mill of alkylolamide phosphate ester, 10-60 per mill of sodium benzoate and 2-30 per mill of disodium ethylenediamine tetraacetic acid.
Preferably, the surface of the aluminum alloy panel in step S7 is coated with oxalic acid solution, and then ion energy of 200keV and beam current density of 120A/cm are used2And the high-current pulse ion beam consisting of the mixed ion beam with the pulse width of 50ns irradiates the surface of the aluminum alloy panel twice, wherein the irradiation is respectively 8-10s and 1-5 s.
Preferably, the step S6 grinding further includes the following steps:
s601: coarse grinding; the aluminum alloy panel in the step S5 is sequentially polished by 1200#, 1000#, 600#, 400# artificial emery paper until the surface roughness of the aluminum alloy panel is semi-smooth surface RZIs 3.2;
s602: fine grinding; placing the aluminum alloy panel in the step S602 in an abrasive liquid with the flow rate of 25m/S and the temperature of 100-150 ℃, and polishing until the surface roughness of the aluminum alloy panel is a smooth surface RZ0.4 to 0.8; the grinding liquid comprises the following raw materials per liter: 5% of nano silicon dioxide, 55% of sodium silicate, 20% of croscarmellose sodium and 20% of emulsifier.
Compared with the prior art, the invention has the following beneficial effects:
according to the aluminum veneer and the forming process thereof, the basic structure of the aluminum veneer is preliminarily formed through plate shearing, stamping, bending, welding and assembling, then the preliminarily formed aluminum veneer is subjected to surface polishing by adopting abrasive paper and abrasive liquid, an oxide layer on an aluminum alloy panel is removed by acid washing after polishing, an acid liquid catalyst is added in an acid solution, the acid washing efficiency is accelerated, the acid consumption is saved, the oxalic acid solution is used for maintaining and avoiding the regeneration of an oxide film, the surface molecular activity of the aluminum veneer is excited by irradiation and then chromized, the strength of a chromized layer is increased, the dead weight is light, the strength is high, and the installation and construction are quick and convenient; the finish paint with any color is sprayed according to the requirement, so that various color requirements of modern buildings can be met, and the decorative effect is strong; the outermost layer is sprayed with PVDF fluorocarbon resin, so that ultraviolet penetration is effectively prevented, the anti-aging performance is improved, the structure is stable, and the surface can be kept smooth for a long time.
Drawings
FIG. 1 is an overall structural view of embodiment 1 of the present invention;
FIG. 2 is a top view of example 1 of the present invention;
FIG. 3 is a bottom view of embodiment 1 of the present invention;
FIG. 4 is an overall structural view of embodiment 1 of the present invention;
FIG. 5 is a schematic view of shearing in embodiment 1 of the present invention;
FIG. 6 is a process flow diagram of example 1 of the present invention.
In the figure: 1. a single layer of aluminum plate; 11. a protective film; 12. a varnish protective layer; 13. finishing paint; 14. primary painting; 15. a first aluminum chromizing film; 16. an aluminum plate; 17. a second aluminum chromizing film; 18. back painting; 2. reinforcing ribs; 3. PVDF fluorocarbon resin coating; 4. welding the column and the welding nail; 5. hanging a lug; 6. edging; 61. a circular hole.
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.
Example 1:
referring to fig. 1-6, an aluminum single plate comprises a single-layer aluminum plate 1, reinforcing ribs 2, a PVDF fluorocarbon resin coating 3, a welding column welding nail 4 and a hanging lug 5, wherein the middle part of the single-layer aluminum plate 1 is provided with two mutually parallel convex reinforcing ribs 2, the welding column welding nail 4 is arranged between the two reinforcing ribs 2, the surface layer of the single-layer aluminum plate 1 is coated with the PVDF fluorocarbon resin coating 3, the PVDF fluorocarbon resin coating 3 is a fluorocarbon polymer coating, the fluorocarbon polymer coating contains 85% or more of KYNAH500 fluorocarbon resin, and the edge of the single-layer aluminum plate 1 is fixedly connected with the hanging lug 5 through a bolt; the single-layer aluminum plate 1 comprises a protective film 11, a varnish protective layer 12, a finish paint 13, a primary paint 14, a first aluminum chromizing film 15, an aluminum plate 16, a second aluminum chromizing film 17 and a back paint 18 which are sequentially arranged from top to bottom, and the thickness of the aluminum plate 16 is 2 mm.
A forming process of an aluminum veneer comprises the following steps:
s1: shearing a plate; selecting an aluminum alloy panel with a certain thickness, cutting off a square at the four corners of the aluminum alloy panel, and forming edge strips 6 at the edges of the rest aluminum alloy panels;
s2: performing tower punching; punching two round holes 61 which are parallel to each other on each edge strip 6 at the edge of the aluminum alloy panel;
s3: bending; bending the four edge strips 6 in the same direction, wherein the bending angle is 90 degrees, and the oblique edges of the adjacent edge strips 6 are mutually abutted;
s4: welding; welding the bevel edges of the adjacent edge strips 6, installing two reinforcing ribs 2 which are parallel to each other in the middle of the aluminum alloy panel, and welding column welding nails 4 in the middle of the two reinforcing ribs 2;
s5: assembling; the hanging lug 5 is tightly locked and connected on the edge strip 6 by a bolt penetrating through the round hole 61;
s6: polishing; firstly, coarse grinding is carried out, and then fine grinding is carried out; the S6 grinding further comprises the following steps:
s601: coarse grinding; the aluminum alloy panel in the step S5 is sequentially polished by 1200#, 1000#, 600#, 400# artificial emery paper until the surface roughness of the aluminum alloy panel is semi-smooth surface RZIs 3.2;
s602: fine grinding; placing the aluminum alloy panel in the step S602 in an abrasive liquid with the flow rate of 25m/S and the temperature of 125 ℃, and polishing the aluminum alloy panel to the surface of the aluminum alloy panelThe surface roughness is the smooth surface RZIs 0.8; the grinding liquid comprises the following raw materials per liter: 5% of nano silicon dioxide, 55% of sodium silicate, 20% of croscarmellose sodium and 20% of emulsifier;
s7: acid washing; soaking the aluminum alloy panel in pickling solution at room temperature for 2min, performing ultrasonic treatment for 1min, taking out the aluminum alloy panel, washing the aluminum alloy panel to be neutral by using ionized water, and drying, wherein each liter of pickling solution comprises the following raw materials in percentage by weight: 250mL of hydrochloric acid with the concentration of 12mol/L, 70mL of trisodium phosphate with the weight concentration of 85%, 70mL of hydrofluoric acid with the weight concentration of 40.0%, 1-2% of pickling solution catalyst and water, wherein the pickling solution catalyst is 80 per mill of fatty alcohol-polyoxyethylene ether, 60 per mill of alkylolamide phosphate, 40 per mill of sodium benzoate and 20 per mill of disodium ethylenediamine tetraacetate;
s8: irradiating; coating oxalic acid solution on the surface of the aluminum alloy panel in the step S7, and then adopting the ion energy of 210keV and the beam current density of 200A/cm2The high-current pulse ion beam consisting of the mixed ion beam with the pulse width of 45ns irradiates the surface of the aluminum alloy panel for 25s, and the aluminum alloy panel is washed to be neutral by using ionized water and then dried;
s9: chromizing; and (3) placing the aluminum alloy panel in the step S8 in a chromizing liquid for chromizing for 2 minutes at 80 ℃, wherein each liter of the chromizing liquid comprises the following raw materials: 9g of phosphoric acid with the weight concentration of 85%, 7g of ammonium bifluoride, 35g of potassium permanganate and 3g of titanium chloride, and the raw materials are mixed with water to obtain a chromizing liquid;
s10: spraying; the surface of the first aluminum chromizing film 15 and the surface of the second aluminum chromizing film 17 are respectively sprayed with a primary paint 14 and a back paint 18 by using an atomizer, the primary paint 14 and the back paint 18 are epoxy zinc-rich primer, the primary paint 14 and the back paint 18 are cooled and then sprayed with a finish 13 on the surface of the primary paint 14, then a varnish is sprayed on the surface of the finish 13 to form a protective layer, the surface of the varnish protective layer 12 is sprayed with a layer of silane rare earth composite protective film 11 with the thickness of 0.4-2 mm, and finally PVDF fluorocarbon resin is sprayed on the surfaces of the protective film 11 and the back paint 18.
Example 2:
example 2 is different from example 1 in that ion energy of 210keV and beam current density of 200A/cm are used in step S82And the surface irradiation 20 is carried out on the aluminum alloy panel by the high-current pulse ion beam consisting of the mixed ion beam with the pulse width of 45 ns.
Example 3:
example 3 is different from example 1 in that ion energy of 210keV and beam current density of 200A/cm are used in step S82And the surface of the aluminum alloy panel is irradiated by 30 high current pulse ion beams consisting of mixed ion beams with the pulse width of 45 ns.
Example 4:
example 4 is different from example 1 in that ion energy of 200keV and beam current density of 120A/cm are used in step S82And the high current pulse ion beam consisting of the mixed ion beam with the pulse width of 50ns irradiates the surface of the aluminum alloy panel twice, wherein the irradiation is respectively 8s and 3 s.
Comparative example 1:
example 1 is different from examples 1 to 4 in that the aluminum alloy panel was not surface-irradiated with the high-current pulsed ion beam in step S8.
The details of the irradiation cases of examples 1 to 4 and comparative example 1 are shown in Table 1.
Examples 1-4 and comparative example 1 were tested:
the test was carried out according to the regulation of GB/T1172-99, the surface of the aluminum single plate was pressed with a force of 400N for 30 minutes, the deformation was measured after 1.5 ten thousand repetitions, and the deformation was then measured.
TABLE 1
As can be seen from table 1 above, the single irradiation time is 25s or the surface irradiation is performed twice on the aluminum alloy panel, and when the irradiation is 8s and 3s respectively, the strength of the aluminum veneer is the highest, and the aluminum veneer is not easy to deform.
In summary, the following steps: according to the aluminum veneer and the forming process thereof, the basic structure of the aluminum veneer is preliminarily formed through plate shearing, stamping, bending, welding and assembling, then the preliminarily formed aluminum veneer is subjected to surface polishing by adopting abrasive paper and abrasive liquid, an oxide layer on an aluminum alloy panel is removed by acid washing after polishing, an acid liquid catalyst is added in an acid solution, the acid washing efficiency is accelerated, the acid consumption is saved, the oxalic acid solution is used for maintaining and avoiding the regeneration of an oxide film, the surface molecular activity of the aluminum veneer is excited by irradiation and then chromized, the strength of a chromized layer is increased, the dead weight is light, the strength is high, and the installation and construction are quick and convenient; the finish 13 with any color is sprayed according to the requirement, so that various color requirements required by modern buildings can be met, and the decorative effect is strong; the outermost layer is sprayed with PVDF fluorocarbon resin, so that ultraviolet penetration is effectively prevented, the anti-aging performance is improved, the structure is stable, and the surface can be kept smooth for a long time.
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 (7)
1. An aluminum veneer, characterized in that: the welding column welding nail comprises a single-layer aluminum plate (1), reinforcing ribs (2), a PVDF (polyvinylidene fluoride) fluorocarbon resin coating (3), a welding column welding nail (4) and a hanging lug (5), wherein the middle part of the single-layer aluminum plate (1) is provided with two mutually parallel convex reinforcing ribs (2), the welding column welding nail (4) is arranged between the two reinforcing ribs (2), the surface layer of the single-layer aluminum plate (1) is coated with the PVDF fluorocarbon resin coating (3), and the edge of the single-layer aluminum plate (1) is fixedly connected with the hanging lug (5) through a bolt; the single-layer aluminum plate (1) comprises a protective film (11), a varnish protective layer (12), a finish (13), a primary paint (14), a first aluminum chromizing film (15), an aluminum plate (16), a second aluminum chromizing film (17) and a back paint (18) which are sequentially arranged from top to bottom.
2. The aluminum veneer of claim 1, wherein: the thickness of the aluminum plate (16) is 2-4 mm.
3. The aluminum veneer of claim 1, wherein: the PVDF fluorocarbon resin coating (3) is a fluorocarbon polymer coating, and the fluorocarbon polymer coating contains 85% or more of KYNAH500 fluorocarbon resin.
4. A process for forming an aluminum veneer according to claim 1, characterized in that: the method comprises the following steps:
s1: shearing a plate; selecting an aluminum alloy panel with a certain thickness, cutting off a square at the four corners of the aluminum alloy panel, and forming edge strips (6) at the edges of the rest aluminum alloy panels;
s2: performing tower punching; punching two round holes (61) which are parallel to each other on each edge strip (6) at the edge of the aluminum alloy panel;
s3: bending; the four edge strips (6) are bent in the same direction, the bending angle is 90 degrees, and the bevel edges of the adjacent edge strips (6) are mutually abutted;
s4: welding; welding the bevel edges of the adjacent edge strips (6), installing two reinforcing ribs (2) which are parallel to each other in the middle of the aluminum alloy panel, and welding column welding nails (4) in the middle of the two reinforcing ribs (2);
s5: assembling; bolts penetrate through the round holes (61) to connect the hangers (5) on the edge strips (6) in a locking manner;
s6: polishing; firstly, coarse grinding is carried out, and then fine grinding is carried out;
s7: acid washing; soaking the aluminum alloy panel in pickling solution at room temperature for 2min, performing ultrasonic treatment for 30 s-1 min, taking out the aluminum alloy panel, washing the aluminum alloy panel to be neutral by using ionized water, and drying, wherein each liter of pickling solution comprises the following raw materials in percentage by weight: 250mL of hydrochloric acid with the concentration of 12mol/L, 70mL of trisodium phosphate with the weight concentration of 85%, 70mL of hydrofluoric acid with the weight concentration of 40.0% and water;
s8: irradiating; coating oxalic acid solution on the surface of the aluminum alloy panel in the step S7, and then adopting the ion energy of 210keV and the beam current density of 200A/cm2Irradiating the surface of the aluminum alloy panel for 20-30 s by a high-current pulse ion beam consisting of the mixed ion beam with the pulse width of 45 ns;
s9: chromizing; and (3) placing the aluminum alloy panel in the step S8 in a chromizing liquid for chromizing for 2 minutes at 80 ℃, wherein each liter of the chromizing liquid comprises the following raw materials: 9g of phosphoric acid with the weight concentration of 85%, 7g of ammonium bifluoride, 35g of potassium permanganate and 3g of titanium chloride, and the raw materials are mixed with water to obtain a chromizing liquid;
s10: spraying; the method comprises the steps of spraying a primary paint (14) and a back paint (18) on the surfaces of a first aluminum chromized film (15) and a second aluminum chromized film (17) by using an atomizer respectively, wherein the primary paint (14) and the back paint (18) are epoxy zinc-rich primers, spraying a finish paint (13) on the surface of the primary paint (14) after the primary paint (14) and the back paint (18) are cooled, spraying a varnish on the surface of the finish paint (13) to form a protective layer, spraying a silane rare earth composite protective film (11) with the thickness of 0.4-2 mm on the surface of the varnish protective layer (12), and spraying PVDF fluorocarbon resin on the surfaces of the protective film (11) and the back paint (18).
5. The forming process of an aluminum veneer according to claim 4, characterized in that: each liter of pickling solution comprises the following raw materials in percentage by weight: 250mL of hydrochloric acid with the concentration of 12mol/L, 70mL of trisodium phosphate with the weight concentration of 85%, 70mL of hydrofluoric acid with the weight concentration of 40.0%, 1-2% of pickling solution catalyst and water, wherein the pickling solution catalyst is 80-220 per mill of fatty alcohol-polyoxyethylene ether, 60-180 per mill of alkylolamide phosphate ester, 10-60 per mill of sodium benzoate and 2-30 per mill of disodium ethylenediamine tetraacetic acid.
6. The forming process of an aluminum veneer according to claim 4, characterized in that: coating oxalic acid solution on the surface of the aluminum alloy panel in the step S7, and then adopting the ion energy of 200keV and the beam current density of 120A/cm2And the high-current pulse ion beam consisting of the mixed ion beam with the pulse width of 50ns irradiates the surface of the aluminum alloy panel twice, wherein the irradiation is respectively 8-10s and 1-5 s.
7. The forming process of an aluminum veneer according to claim 4, characterized in that: step S6 grinding further includes the steps of:
s601: coarse grinding; the aluminum alloy panel in the step S5 is sequentially polished by 1200#, 1000#, 600#, 400# artificial emery paper until the surface roughness of the aluminum alloy panel is semi-smooth surface RZIs 3.2;
s602: fine grinding; placing the aluminum alloy panel in the step S602 in an abrasive liquid with the flow rate of 25m/S and the temperature of 100-150 ℃, and polishing the aluminum alloy panel to the surface of the aluminum alloy panelRoughness is the plain RZ0.4 to 0.8; the grinding liquid comprises the following raw materials per liter: 5% of nano silicon dioxide, 55% of sodium silicate, 20% of croscarmellose sodium and 20% of emulsifier.
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