CN107804102A - A kind of aluminium sheet is drawn and its manufacture craft - Google Patents
A kind of aluminium sheet is drawn and its manufacture craft Download PDFInfo
- Publication number
- CN107804102A CN107804102A CN201711039812.7A CN201711039812A CN107804102A CN 107804102 A CN107804102 A CN 107804102A CN 201711039812 A CN201711039812 A CN 201711039812A CN 107804102 A CN107804102 A CN 107804102A
- Authority
- CN
- China
- Prior art keywords
- aluminium sheet
- aluminum plate
- anodic oxidation
- sealing
- drawn
- 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.)
- Pending
Links
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 93
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 93
- 239000004411 aluminium Substances 0.000 title claims abstract description 54
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 28
- 230000003647 oxidation Effects 0.000 claims abstract description 35
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 35
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 31
- 238000007789 sealing Methods 0.000 claims abstract description 29
- 238000005530 etching Methods 0.000 claims abstract description 22
- 239000000126 substance Substances 0.000 claims abstract description 22
- 238000005498 polishing Methods 0.000 claims abstract description 20
- 238000005422 blasting Methods 0.000 claims abstract description 10
- 238000006386 neutralization reaction Methods 0.000 claims abstract description 9
- 239000000243 solution Substances 0.000 claims description 25
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 18
- 239000007788 liquid Substances 0.000 claims description 10
- 238000005488 sandblasting Methods 0.000 claims description 10
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 8
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 8
- 239000003795 chemical substances by application Substances 0.000 claims description 7
- 238000007639 printing Methods 0.000 claims description 7
- 238000007743 anodising Methods 0.000 claims description 6
- 239000003513 alkali Substances 0.000 claims description 5
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 4
- 238000005406 washing Methods 0.000 claims description 4
- 239000011259 mixed solution Substances 0.000 claims description 3
- 239000002699 waste material Substances 0.000 claims description 3
- 238000005097 cold rolling Methods 0.000 claims description 2
- 238000005096 rolling process Methods 0.000 claims description 2
- 239000004576 sand Substances 0.000 claims description 2
- 238000004140 cleaning Methods 0.000 claims 1
- 238000010422 painting Methods 0.000 abstract description 11
- 229910052751 metal Inorganic materials 0.000 abstract description 5
- 239000002184 metal Substances 0.000 abstract description 5
- 238000012423 maintenance Methods 0.000 description 5
- 239000002253 acid Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 229910017604 nitric acid Inorganic materials 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 238000005562 fading Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000007641 inkjet printing Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000010428 oil painting Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
- B44C5/00—Processes for producing special ornamental bodies
- B44C5/04—Ornamental plaques, e.g. decorative panels, decorative veneers
- B44C5/0415—Ornamental plaques, e.g. decorative panels, decorative veneers containing metallic elements
Landscapes
- Laminated Bodies (AREA)
- ing And Chemical Polishing (AREA)
Abstract
The invention belongs to the production field of metal calligraphy and painting, and in particular to a kind of aluminium sheet is drawn and its manufacture craft.The manufacture craft comprises the following steps：（1）Aluminium sheet makes；（2）Blasting treatment；（3）Anodic oxidation：Including alkaline etching, neutralization, chemical polishing, anodic oxidation, sealing of hole and hot water wash, the roughness on surface is obtained in Ra=0.7 ~ 1.5 μm, the aluminium sheet that 60 ° of surface gloss is 8 ~ 20；（4）Photo print.Manufacturing process is simple, and the cycle is short, efficiency high, high yield rate；Made aluminium sheet draws that 3-D effect is good, color saturation is high, surface gloss is high, colour-fast and do not fade.
Description
Technical field
The invention belongs to the production field of metal calligraphy and painting, and in particular to a kind of aluminium sheet is drawn and its manufacture craft.
Background technology
With the continuous lifting of living standard, at present the occasions such as family, dining room, hotel, office frequently with decorative calligraphy and painting with
Lift aesthetic feeling.And used decorative calligraphy and painting has two classes, one kind is plane picture；Another kind of is non-plane picture.On-plane surface is drawn can be with
The needs of in terms of meeting people to third dimension, stereovision.At present, the on-plane surface of in the market draws material used and typically uses fiber
It is usually fiber, gypsum, glass etc. that the on-plane surface of in the market, which draws material used,.Because material lacks heavy feeling in itself, manufacture
The decoration painting gone out fully can not match with modern furniture, living space, there is limitation, it is impossible to meet more market need
Ask.And plane picture such as oil painting, famous calligraphy and painting etc., it is expensive, it is difficult to popularize, and it is easily damaged, regular maintenance is difficult, maintenance expense
With height；Though common printed draw cheap, shortage heavy feeling, aesthetic effect deficiency.
The high-end anodic oxidation band that Zhong Lvrui Fujian limited company produces at present, because lacking caused by production process
Fall into, portioned product can not normally deliver goods, and can only make a price reduction processing or even scrap, economic loss is larger.If by the portioned product through sun
After the oxidation processes of pole, inkjet printing is carried out on the aluminium alloy plate after anodic oxidation using dedicated printer, is had to produce
3-D effect is good, color saturation is high, surface gloss is high, aluminium sheet that is colour-fast, not fading is drawn, and can be according to the actual requirements
It is adjusted, to obtain different printing effects.Not only there will be the anodic oxidation material of mass defect to turn waste into wealth, also extensible
Products chain, downstream extends, while creates income.
At present, the mode of metal calligraphy and painting generally use Freehandhand-drawing or the etching of in the market main flow produces, though stood with certain
Body-sensing, heavy feeling, stereovision.But complex manufacturing process, fabrication cycle length, yield rate are low.And use dedicated printer printing
Aluminium sheet draw work well, color saturation is high, surface gloss is high, it is colour-fast, do not fade, the original face of calligraphy and painting can be kept for a long time
Looks, also can anodic oxygen dissolve the aluminium sheet of different color to make calligraphy and painting, lift calligraphy and painting aesthetic feeling.After anodic oxidation, surface of aluminum plate is in
Matt silver color, can present with paper similar in background color.The aluminium sheet made using this method is drawn, and manufacturing process is simple, and the cycle is short, beats
The aluminium sheet of one 600 × 900mm specification of print, which is drawn, only needs about 30min, and efficiency high, high yield rate, maintenance is simple, and maintenance cost is low,
Customizable produces, and can also cooperate with well-known artist, is sold by vivid mandate, agency by agreement, the duplication that can limit the quantity.
The content of the invention
The deficiencies of it is an object of the invention to for existing metal calligraphy and painting complex manufacturing technology, there is provided a kind of aluminium sheet draw and its
Manufacture craft.The manufacture craft of the present invention is simple, and the cycle is short, high yield rate；Obtained aluminium sheet picture 3-D effect is good, color
Saturation degree is high, surface gloss is high, colour-fast and do not fade.
To realize the purpose of the present invention, adopt the following technical scheme that：
The manufacture craft that a kind of aluminium sheet is drawn, comprises the following steps：
（1）Aluminium sheet makes：On cold-rolling mill, aluminium sheet is rolling to required thickness；Usually using anodic oxidation material, waste material is end to end
Can；Sheet material aligned by stretch bending-straightening machine smooth, band is cut into by required stock board using cutter；
（2）Blasting treatment：Will be through step（1）Sheet material after processing carries out blasting treatment；Sandblasting 2.0 ~ 4.0bar of air pressure, makes
It is 100 ~ 170 mesh with pick sand, 70 ~ 120mm/min of sandblasting speed；
（3）Anodic oxidation：Including alkaline etching, neutralization, chemical polishing, anodic oxidation, sealing of hole and hot water wash, the roughness on surface is obtained
In Ra=0.7 ~ 1.5 μm, 60 ° of surface gloss is 8 ~ 20 aluminium sheet；
（4）Photo print：Drawn to print the aluminium sheet with concave-convex sense, need to carry out spot color processing to picture before printing.Will processing
Picture afterwards imports print software, selects spot color printing model, prints the aluminium sheet with concave-convex sense and draws.Also can be according to client's need
Selection common print pattern is sought, the aluminium sheet with plane sense is printed and draws.
More specifically, described anodic oxidation concretely comprises the following steps：
1）Alkaline etching：Remove product surface oxide layer and greasy dirt；Adjust the bright mute degree of product surface；Product surface is removed slightly to lack
Fall into；Alkaline etching uses NaOH solution, 70 ~ 90g/L of solution concentration, 60 ~ 70 DEG C of alkaline etching temperature, 15 ~ 20s of alkaline etching time；Then with clear
Water cleans surface of aluminum plate, removes surface of aluminum plate foul and alkali lye；
2）Neutralize：Remove the molecule of product surface oxide and hybrid metal impurity, neutralize the residual alkali after alkaline etching, if do not cleaned
Anodic oxidation corrosion phenomenon can totally be caused；Neutralization uses HNO3Solution, 200 ~ 300g/L of solution concentration, neutralizes 20 at room temperature
~30s；Then surface of aluminum plate is cleaned with clear water, removes surface of aluminum plate foul and acid solution；
3）Chemical polishing：To improve product surface glossiness.Chemical polishing soln uses phosphoric acid:Sulfuric acid volume ratio=4:1 mixing
Solution, 85 ~ 95 DEG C of chemical polishing temperature, 40 ~ 70s of polishing time；Then surface of aluminum plate is cleaned with clear water, it is dirty removes surface of aluminum plate
Thing and chemical liquids；
4）Anodic oxidation：Using electrochemical principle, layer oxide film is generated in surface of aluminum plate, improves corrosion resistance, wearability.Sun
Pole oxidation uses H2SO4Solution, solution concentration 180 ~ 200g/L, Al3+ Concentration be 5 ~ 15g/L, anodizing temperature 19 ± 1
DEG C, 30 ± 5s of anodizing time, 13 ~ 15V of anodic oxidation voltage；Then surface of aluminum plate is cleaned with clear water, removes surface of aluminum plate
Foul and chemical liquids；
5）Sealing of hole：The micropore sealing of hole of anode oxide film, surface is smooth to be not easy contaminated and corrodes；Sealing of hole uses hole sealing agent,
Sealing of hole 7 ~ 10g/L of agent concentration, 90 ~ 95 DEG C of sealing of hole temperature, 15 ± 5s of sealing of hole time, pore-sealing liquid pH value 5 ~ 6；
6）Hot water wash：Clean surface of aluminum plate foul, 60 ~ 70 DEG C of hot water temperature, 5 ~ 10s of washing time；
7）Surface of aluminum plate is dried with hot blast after hot water wash, prevents aluminium sheet from corroding.
Aluminium sheet is after anodized, and the roughness on surface is in Ra=0.7 ~ 1.5 μm, surface of aluminum plate glossiness（60°）
8~20。
The present invention has advantages below compared with the prior art：
1）The manufacture craft of the present invention is simple, and the cycle is short, prints the aluminium sheet picture of 600 × 900mm specification and only needs about 30min,
Efficiency high, high yield rate, safeguard that simply maintenance cost is low, customizable production；
2）Obtained aluminium sheet draws that 3-D effect is good, color saturation is high, surface gloss is high, colour-fast and do not fade.
Brief description of the drawings
Fig. 1 is that aluminium sheet made from embodiment 1 is drawn；
Fig. 2 is that aluminium sheet made from embodiment 2 is drawn.
Embodiment
For the further open rather than limitation present invention, below in conjunction with example, the present invention is described in further detail.
Embodiment 1
The manufacture craft that a kind of aluminium sheet is drawn, is concretely comprised the following steps：
1. aluminium sheet former material is produced from the anodic oxidation material that mass defect be present, aluminium thickness 0.8mm；
2. band is switched to the sheet material of 700 × 1000 mm specifications on cutter；
3. above-mentioned sheet material is subjected to blasting treatment, blasting pressure 3.1bar, several 170 mesh of pick Grains, sandblasting speed 100mm/min；
4. the sheet material after above-mentioned sandblasting is carried out into anodized, it is specially：
4.1 alkaline etching：Alkaline etching uses NaOH solution, solution concentration 82g/L, 65 DEG C of alkaline etching temperature, alkaline etching time 15s.Used after alkaline etching
Clear water cleans surface of aluminum plate, removes surface of aluminum plate foul and alkali lye.
4.2 neutralize：Neutralization uses HNO3Solution, solution concentration 260g/L, neutralizes 27s at room temperature.Clear water is used after neutralization
Surface of aluminum plate is cleaned, removes surface of aluminum plate foul and acid solution.
4.3 chemical polishing：Chemical polishing soln uses phosphoric acid:Sulfuric acid volume ratio=4:1 mixed solution, chemical polishing temperature
89 DEG C of degree, polishing time 50s.Surface of aluminum plate is cleaned with clear water after chemical polishing, removes surface of aluminum plate foul and chemical liquids.
4.4 anodic oxidation：Anodic oxidation uses H2SO4Solution, solution concentration 189g/L, Al3+ 11g/L, anodic oxidation temperature
19 DEG C, anodizing time 27s, anodic oxidation voltage 13.9V of degree.Surface of aluminum plate is cleaned with clear water after anodic oxidation, removes aluminium
Plate surface foul and chemical liquids.
4.5 sealing of hole：Sealing of hole uses hole sealing agent, sealing of hole agent concentration 8.8g/L, 91 DEG C of sealing of hole temperature, sealing of hole time 16s, envelope
Hole liquid pH value 5.3.
4.6 hot water wash：64 DEG C of hot water temperature, washing time 8s；The roughness Ra of surface of aluminum plate after sandblasting anodic oxidation=
0.9 ~ 1.01 μm, plate surface glossiness（60°）9~11.
Surface of aluminum plate is dried with hot blast after 4.7 hot water wash, prevents aluminium sheet from corroding.
5. carrying out spot color processing to picture using Photoshop softwares, picture after processing is imported into print software
PHOTOPRINT, print attribution is edited, select spot color printing model, picture has concave-convex sense after being printed using dedicated printer.
Concavo-convex depth difference about 0.2mm.As shown in Figure 1.
Embodiment 2
The manufacture craft that a kind of aluminium sheet is drawn, is concretely comprised the following steps：
1. aluminium sheet former material is produced from the anodic oxidation material that mass defect be present, aluminium thickness 1.0mm；
2. band is switched to the sheet material of 700 × 1050 mm specifications on cutter；
3. above-mentioned sheet material is subjected to blasting treatment, blasting pressure 3.2bar, several 170 mesh of pick Grains, sandblasting speed 100mm/min；
4. the sheet material after above-mentioned sandblasting is carried out into anodized, it is specially：
4.1 alkaline etching：Alkaline etching uses NaOH solution, solution concentration 81g/L, 66 DEG C of alkaline etching temperature, alkaline etching time 17s.Used after alkaline etching
Clear water cleans surface of aluminum plate, removes surface of aluminum plate foul and alkali lye.
4.2 neutralize：Neutralization uses HNO3Solution, solution concentration 258g/L, neutralizes 27s at room temperature.Clear water is used after neutralization
Surface of aluminum plate is cleaned, removes surface of aluminum plate foul and acid solution.
4.3 chemical polishing：Chemical polishing soln uses phosphoric acid:Sulfuric acid volume ratio=4:1 mixed solution, chemical polishing temperature
90 DEG C of degree, polishing time 54s.Surface of aluminum plate is cleaned with clear water after chemical polishing, removes surface of aluminum plate foul and chemical liquids.
4.4 anodic oxidation：Anodic oxidation uses H2SO4Solution, solution concentration 191g/L, Al3+11g/L, anodic oxidation temperature
19 DEG C, anodizing time 30s, anodic oxidation voltage 14.2V of degree.Surface of aluminum plate is cleaned with clear water after anodic oxidation, removes aluminium
Plate surface foul and chemical liquids.
4.5 sealing of hole：Sealing of hole uses hole sealing agent, sealing of hole agent concentration 9.1g/L, 90 DEG C of sealing of hole temperature, sealing of hole time 15s, envelope
Hole liquid pH value 5.5.
4.6 hot water wash：66 DEG C of hot water temperature, washing time 8s；After sandblasting anodic oxidation, the roughness of surface of aluminum plate exists
Between Ra=1.1 ~ 1.3 μm, surface of aluminum plate glossiness（60°）16 ~ 20.
Surface of aluminum plate is dried with hot blast after 4.7 hot water, prevents aluminium sheet from corroding.
5. carrying out spot color processing to picture using Photoshop softwares, picture after processing is imported into print software
PHOTOPRINT, print attribution is edited, select spot color printing model, picture has concave-convex sense after being printed using dedicated printer.
Concavo-convex depth difference about 0.2mm.As shown in Figure 2.
The foregoing is only presently preferred embodiments of the present invention, all equivalent changes done according to scope of the present invention patent with
Modification, it should all belong to the covering scope of the present invention.
Claims (6)
- A kind of 1. manufacture craft that aluminium sheet is drawn, it is characterised in that：Including following manufacturing process：（1）Aluminium sheet makes；（2）Blasting treatment；（3）Anodic oxidation：Including alkaline etching, neutralization, chemical polishing, anodic oxidation, sealing of hole and hot water wash, the roughness on surface is obtained In Ra=0.7 ~ 1.5 μm, 60 ° of surface gloss is 8 ~ 20 aluminium sheet；（4）Photo print.
- 2. the manufacture craft that aluminium sheet according to claim 1 is drawn, it is characterised in that：Step（1）Described aluminium sheet makes tool Body is：On cold-rolling mill, by anodic oxidation aluminium, waste material is rolling to required thickness end to end, is aligned sheet material by stretch bending-straightening machine It is smooth, band is cut into by required stock board using cutter.
- 3. the manufacture craft that aluminium sheet according to claim 1 is drawn, it is characterised in that：Step（2）Described blasting treatment tool Body is：Aluminium plate is subjected to blasting treatment, sandblasting air pressure is 2.0 ~ 4.0bar, the use of pick sand is 100 ~ 170 mesh, and sandblasting is fast Spend 70 ~ 120mm/min.
- 4. the manufacture craft that aluminium sheet according to claim 1 is drawn, it is characterised in that：Step（3）Described anodic oxidation tool Body step is：1）Alkaline etching：Concentration is used to carry out alkaline etching processing, 60 ~ 70 DEG C of alkaline etching temperature, alkali to aluminium sheet for 70 ~ 90g/L NaOH solution Lose 15 ~ 20s of the time；Then surface of aluminum plate is cleaned with clear water；2）Neutralize：Use HNO of the concentration for 200 ~ 300g/L3Solution is to through step 1）Aluminium sheet after processing carries out neutralisation treatment, 20 ~ 30s is neutralized at room temperature；Then surface of aluminum plate is cleaned with clear water；3）Chemical polishing：Volume ratio is used as 4:1 phosphoric acid and the mixed solution of sulfuric acid carry out chemical polishing to aluminium sheet, and chemistry is thrown 85 ~ 95 DEG C of light temperature, 40 ~ 70s of polishing time；Then surface of aluminum plate is cleaned with clear water；4）Anodic oxidation：Anodized is carried out to aluminium sheet, concentration is 180 ~ 200g/L H2SO4Solution, Al3+It is dense It is 19 ± 1 DEG C to spend for 5 ~ 15g/L, anodizing temperature, and anodizing time is 30 ± 5s, and anodic oxidation voltage is 13 ~ 15V； Then surface of aluminum plate is cleaned with clear water；5）Sealing of hole：By the micropore sealing of hole of the anode oxide film of surface of aluminum plate, sealing of hole 7 ~ 10g/L of agent concentration, sealing of hole temperature 90 ~ 95 DEG C, 15 ± 5s of sealing of hole time, pore-sealing liquid pH value 5 ~ 6；6）Hot water wash：Finally using 60 ~ 70 DEG C of water cleaning surface of aluminum plate foul, 5 ~ 10s of washing time；7）Surface of aluminum plate is dried with hot blast after hot water wash.
- 5. the manufacture craft that aluminium sheet according to claim 1 is drawn, it is characterised in that：Step（4）Described photo print tool Body is：Picture after processing is imported into print software, selects spot color printing model, the aluminium sheet with concave-convex sense is printed and draws；Or Person selects common print pattern according to customer demand, prints the aluminium sheet with plane sense and draws.
- 6. aluminium sheet made from a kind of manufacture craft as described in claim any one of 1-5 is drawn.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711039812.7A CN107804102A (en) | 2017-10-31 | 2017-10-31 | A kind of aluminium sheet is drawn and its manufacture craft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711039812.7A CN107804102A (en) | 2017-10-31 | 2017-10-31 | A kind of aluminium sheet is drawn and its manufacture craft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107804102A true CN107804102A (en) | 2018-03-16 |
Family
ID=61590906
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711039812.7A Pending CN107804102A (en) | 2017-10-31 | 2017-10-31 | A kind of aluminium sheet is drawn and its manufacture craft |
Country Status (1)
| Country | Link |
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| CN (1) | CN107804102A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113246648A (en) * | 2021-03-02 | 2021-08-13 | 宝鸡市福立特工贸有限责任公司 | Titanium metal plate painting and manufacturing process thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113246648A (en) * | 2021-03-02 | 2021-08-13 | 宝鸡市福立特工贸有限责任公司 | Titanium metal plate painting and manufacturing process thereof |
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Application publication date: 20180316 |
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