CN104959296A - Surface spray process for aluminium alloy sections - Google Patents
Surface spray process for aluminium alloy sections Download PDFInfo
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- CN104959296A CN104959296A CN201510325581.0A CN201510325581A CN104959296A CN 104959296 A CN104959296 A CN 104959296A CN 201510325581 A CN201510325581 A CN 201510325581A CN 104959296 A CN104959296 A CN 104959296A
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Abstract
The invention discloses a surface spray process for aluminium alloy sections. Through a series of procedures such as dust removing, de-oiling, water washing, surface treatment, secondary water washing, priming paint spraying, first-time solidification treatment, finish paint spraying, second-time solidification treatment, finishing varnish spraying and third-time solidification treatment, aluminium alloy sections with strong adhesion performance are obtained. After examination, dedusting and deoiling, a chromium-free surface treatment fluid is utilized for treatment to form a safe and environment-friendly protective film, so that the binding force between a coating and an aluminium alloy surface is increased, the anti-oxidation capability is improved, and the service life of the aluminium alloy coating is prolonged; and a priming paint, a finish paint and a finishing varnish are sequentially sprayed on the surface of the protective film, and solidification treatment is conducted after each time of spraying, so that the adhesion between all layers is enhanced. The aluminium alloy sections obtained through plastic spraying are attractive and textured in surface and can meet the use requirements of more occasions; and meanwhile, the oxidation resistance of the aluminium alloy surface layers is greatly improved, a good anti-corrosion effect is achieved and environmental pollution is avoided.
Description
Technical field
The present invention relates to metal surface plastic-blasting technique, specifically a kind of surface plastic spraying technique of aluminium alloy extrusions.
Background technology
Aluminium alloy is a most widely used class non-ferrous metal structural material in industry, widely applies in Aeronautics and Astronautics, automobile, machine-building, boats and ships and chemical industry.Along with develop rapidly that is scientific and technical and industrial economy, increasing to the demand of Welded structural member.Aluminium alloy density is low, but strength ratio is higher, close to or exceed high-quality steel, plasticity is good, can be processed into various section bar, has excellent electric conductivity, thermal conductivity.
Aluminium alloy extrusions, sheet material are a kind of widely used building and ornament materials, in order to prevent the oxidation of aluminium alloy extrusions, sheet material and extend the service life of aluminium alloy extrusions, need to carry out plastic-blasting process at aluminum alloy material surface, but owing to just carrying out degreasing pickling simply in plastic-blasting pretreatment process, make aluminum alloy surface can not have very strong adhesive force, by the erosion that air, acid rain etc. pollute during use, add ultraviolet penetrating, shorten the service life of aluminium, improve use cost.
Summary of the invention
The object of the present invention is to provide the surface plastic spraying technique of the aluminium alloy extrusions of a kind of strong adhesion, safety and environmental protection.
For achieving the above object, the invention provides following technical scheme:
A surface plastic spraying technique for aluminium alloy extrusions, comprises the following steps,
(1) dedusting: the dust treating the aluminium alloy section surface of plastic-blasting with the compressed air of 0.5-0.6MPa carries out dust removal process;
(2) deoil: the aluminium alloy extrusions after dedusting being put into temperature is that the degreaser of 25-35 DEG C soaks 2-3 minute;
(3) wash: rinsed well by the aluminium alloy extrusions clear water after deoiling, washing time is 2-3 minute; Then at 45-55 DEG C of temperature, 20-30min is toasted;
(4) surface treatment: the aluminium alloy extrusions after cleaning is immersed in surface treatment liquid and soaks 3-4 minute;
(5) secondary washing: rinsed well by the aluminium alloy extrusions clear water after surface treatment, washing time is 1-2 minute; Then at 45-55 DEG C of temperature, 20-30min is toasted;
(6) primer spray: utilize electrostatic power spraying apparatus to be sprayed on by primer base and treat plastic-blasting aluminium alloy section surface, the coating thickness of described priming paint is 12-15mm;
(7) first time solidifies process: be placed in curing oven by the aluminium alloy extrusions having sprayed priming paint and be cured, solidification temperature is 80-150 DEG C, and hardening time is 15-20min;
(8) topcoating: utilize electrostatic power spraying apparatus to be sprayed on by topcoat paint and treat plastic-blasting aluminium alloy section surface, the coating thickness of described finish paint is 18-25mm;
(9) second time solidifies process: be placed in curing oven by the aluminium alloy extrusions having sprayed finish paint and be cured, solidification temperature is 80-150 DEG C, and hardening time is 15-20min;
(10) finishing varnish is sprayed: utilize electrostatic power spraying apparatus that finishing varnish spray painting is being treated plastic-blasting aluminium alloy section surface, the coating thickness of described finishing varnish is 8-12mm;
(11) third time solidifies process: be placed in curing oven by the aluminium alloy extrusions having sprayed finishing varnish and be cured, solidification temperature is 80-150 DEG C, and hardening time is 15-20min;
(12) detect, pack warehouse-in.
As the further scheme of the present invention: before dedusting, also need to aluminium alloy extrusions by test, to reject the aluminium alloy extrusions of obvious distortion, bubble and coarse defect.
As the further scheme of the present invention: described degreaser is according to phosphoric acid 65-75%, the citric acid 8-12% of mass percentage concentration and sodium nitrate 6-11%.
As the further scheme of the present invention: described surface treatment liquid comprises Kynoar 8-15%, sodium nitrate 0.5-1%, oxygen base vanadium trichloride 2-3%, citric acid 5-8%, hydrofluoric acid ammonium 2-3% and potassium permanganate 0.6-0.8% according to the raw material of mass percentage concentration.
As the further scheme of the present invention: described priming paint comprises thermoplastic acrylic resin 45-60 part, ethyl acetate 15-22 part, 600-700 object magnesium powder 18-22 part, propylene glycol monopropyl ether 4-7 part and dimethyl silicone polymer 3-4 part according to the raw material of quality hundred number.
As the further scheme of the present invention: described finish paint comprises dimethylacetylamide 40-60 part, titanium dioxide 15-25 part, polyurethane 8-10 part, butyl acetate 8-12 part, dimethyl silicone polymer 1-3 part and pigment 5-10 part according to the raw material of quality hundred number.
Compared with prior art, the invention has the beneficial effects as follows:
The present invention in plastic-blasting pre-treatment after inspection, dedusting, deoiling, utilize and do not process containing the surface treatment liquid of chromium, aluminum alloy surface is made to produce the safe and environmentally friendly diaphragm of one deck, not only increase adhesion and the anti-aging capability of coating and aluminum alloy surface, and be conducive to the service life extending aluminium alloy enamelled coating; Spray priming, finish paint, finishing varnish successively on this diaphragm surface, after each spraying one deck, be cured process, the adhesive force between enhancing every layer; Priming paint can improve the impermeabilisation ability of coating, strengthens the adhesive force between finish paint and aluminum alloy surface, ensures flatness and the color homogeneity of topcoat; Finish paint protection aluminum alloy surface, from the erosion of external environment, as the erosion of air, acid rain, pollution, also prevents ultraviolet from penetrating simultaneously, greatly strengthen ageing resistance; Finishing varnish, while protective topcoat, also improves aesthetic property and the colorfulness of aluminum alloy surface.
The aluminium alloy section surface that plastic-blasting of the present invention obtains is not only attractive in appearance but also have texture, can meet the user demand of more occasions, simultaneously, the oxidation resistance on aluminium alloy top layer is greatly improved, and has good antiseptic effect, strong adhesion, can not noxious material be produced, free from environmental pollution.
Detailed description of the invention
Below in conjunction with the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Embodiment 1
In the embodiment of the present invention, a kind of surface plastic spraying technique of aluminium alloy extrusions, comprises the following steps,
(1) check: carry out by an inspection to aluminium alloy extrusions, to there being obvious distortion, the section bar inspection of bubble and coarse defect makes and scraps process;
(2) dedusting: the dust treating the aluminium alloy section surface of plastic-blasting with the compressed air of 0.6MPa carries out dust removal process;
(3) deoil: the aluminium alloy extrusions after dedusting is put into temperature be 35 DEG C degreaser soak 3 minutes; Degreaser is according to the phosphoric acid 65% of mass percentage concentration, citric acid 12% and sodium nitrate 11%;
(4) wash: rinsed well by the aluminium alloy extrusions clear water after deoiling, washing time is 2 minutes; Then at 55 DEG C of temperature, 20min is toasted;
(5) surface treatment: the aluminium alloy extrusions after cleaning is immersed in surface treatment liquid and soaks 3 minutes; Surface treatment liquid comprises Kynoar 11%, sodium nitrate 0.8%, oxygen base vanadium trichloride 2.5%, citric acid 7% according to the raw material of mass percentage concentration, hydrofluoric acid ammonium 2.5% and potassium permanganate 0.7%;
(6) secondary washing: rinsed well by the aluminium alloy extrusions clear water after surface treatment, washing time is 2 minutes; Then at 45 DEG C of temperature, 30min is toasted;
(7) primer spray: utilize electrostatic power spraying apparatus to be sprayed on by primer base and treat plastic-blasting aluminium alloy section surface, the coating thickness of described priming paint is 15mm; Priming paint comprises thermoplastic acrylic resin 60 parts, ethyl acetate 15 parts, 18 parts, 600-700 object magnesium powder, propylene glycol monopropyl ether 4 parts and dimethyl silicone polymer 3 parts according to the raw material of quality hundred number;
(8) first time solidifies process: be placed in curing oven by the aluminium alloy extrusions having sprayed priming paint and be cured, solidification temperature is 150 DEG C, and hardening time is 15min;
(9) topcoating: utilize electrostatic power spraying apparatus to be sprayed on by topcoat paint and treat plastic-blasting aluminium alloy section surface, the coating thickness of described finish paint is 20mm; Finish paint comprises dimethylacetylamide 50 parts, titanium dioxide 20 parts, polyurethane 9 parts, butyl acetate 10 parts, dimethyl silicone polymer 2 parts and pigment 9 parts according to the raw material of quality hundred number;
(10) second time solidifies process: be placed in curing oven by the aluminium alloy extrusions having sprayed finish paint and be cured, solidification temperature is 80 DEG C, and hardening time is 15min;
(11) finishing varnish is sprayed: utilize electrostatic power spraying apparatus that finishing varnish spray painting is being treated plastic-blasting aluminium alloy section surface, the coating thickness of described finishing varnish is 8mm;
(12) third time solidifies process: be placed in curing oven by the aluminium alloy extrusions having sprayed finishing varnish and be cured, solidification temperature is 120 DEG C, and hardening time is 20min;
(13) detect, pack warehouse-in.
Embodiment 2
In the embodiment of the present invention, a kind of surface plastic spraying technique of aluminium alloy extrusions, comprises the following steps,
(1) check: carry out by an inspection to aluminium alloy extrusions, to there being obvious distortion, the section bar inspection of bubble and coarse defect makes and scraps process;
(2) dedusting: the dust treating the aluminium alloy section surface of plastic-blasting with the compressed air of 0.5MPa carries out dust removal process;
(3) deoil: the aluminium alloy extrusions after dedusting is put into temperature be 25 DEG C degreaser soak 2 minutes; Degreaser is according to the phosphoric acid 75% of mass percentage concentration, citric acid 8% and sodium nitrate 6%;
(4) wash: rinsed well by the aluminium alloy extrusions clear water after deoiling, washing time is 3 minutes; Then at 45 DEG C of temperature, 30min is toasted;
(5) surface treatment: the aluminium alloy extrusions after cleaning is immersed in surface treatment liquid and soaks 4 minutes; Surface treatment liquid comprises Kynoar 15%, sodium nitrate 0.5%, oxygen base vanadium trichloride 3%, citric acid 5% according to the raw material of mass percentage concentration, hydrofluoric acid ammonium 3% and potassium permanganate 0.6%;
(6) secondary washing: rinsed well by the aluminium alloy extrusions clear water after surface treatment, washing time is 1 minute; Then at 45 DEG C of temperature, 30min is toasted;
(7) primer spray: utilize electrostatic power spraying apparatus to be sprayed on by primer base and treat plastic-blasting aluminium alloy section surface, the coating thickness of described priming paint is 12mm; Priming paint comprises thermoplastic acrylic resin 50 parts, ethyl acetate 20 parts, 20 parts, 600-700 object magnesium powder, propylene glycol monopropyl ether 6 parts and dimethyl silicone polymer 4 parts according to the raw material of quality hundred number;
(8) first time solidifies process: be placed in curing oven by the aluminium alloy extrusions having sprayed priming paint and be cured, solidification temperature is 120 DEG C, and hardening time is 15min;
(9) topcoating: utilize electrostatic power spraying apparatus to be sprayed on by topcoat paint and treat plastic-blasting aluminium alloy section surface, the coating thickness of described finish paint is 20mm; Finish paint comprises dimethylacetylamide 40 parts, titanium dioxide 25 parts, polyurethane 10 parts, butyl acetate 12 parts, dimethyl silicone polymer 3 parts and pigment 10 parts according to the raw material of quality hundred number;
(10) second time solidifies process: be placed in curing oven by the aluminium alloy extrusions having sprayed finish paint and be cured, solidification temperature is 120 DEG C, and hardening time is 15min;
(11) finishing varnish is sprayed: utilize electrostatic power spraying apparatus that finishing varnish spray painting is being treated plastic-blasting aluminium alloy section surface, the coating thickness of described finishing varnish is 12mm;
(12) third time solidifies process: be placed in curing oven by the aluminium alloy extrusions having sprayed finishing varnish and be cured, solidification temperature is 150 DEG C, and hardening time is 15min;
(13) detect, pack warehouse-in.
Embodiment 3
In the embodiment of the present invention, a kind of surface plastic spraying technique of aluminium alloy extrusions, comprises the following steps,
(1) check: carry out by an inspection to aluminium alloy extrusions, to there being obvious distortion, the section bar inspection of bubble and coarse defect makes and scraps process;
(2) dedusting: the dust treating the aluminium alloy section surface of plastic-blasting with the compressed air of 0.5MPa carries out dust removal process;
(3) deoil: the aluminium alloy extrusions after dedusting is put into temperature be 35 DEG C degreaser soak 2 minutes; Degreaser is according to the phosphoric acid 70% of mass percentage concentration, citric acid 10% and sodium nitrate 8%;
(4) wash: rinsed well by the aluminium alloy extrusions clear water after deoiling, washing time is 3 minutes; Then at 45 DEG C of temperature, 30min is toasted;
(5) surface treatment: the aluminium alloy extrusions after cleaning is immersed in surface treatment liquid and soaks 3 minutes; Surface treatment liquid comprises Kynoar 8%, sodium nitrate 1%, oxygen base vanadium trichloride 2%, citric acid 8% according to the raw material of mass percentage concentration, hydrofluoric acid ammonium 2% and potassium permanganate 0.8%;
(6) secondary washing: rinsed well by the aluminium alloy extrusions clear water after surface treatment, washing time is 2 minutes; Then at 55 DEG C of temperature, 20min is toasted;
(7) primer spray: utilize electrostatic power spraying apparatus to be sprayed on by primer base and treat plastic-blasting aluminium alloy section surface, the coating thickness of described priming paint is 13mm; Priming paint comprises thermoplastic acrylic resin 45 parts, ethyl acetate 22 parts, 22 parts, 600-700 object magnesium powder, propylene glycol monopropyl ether 7 parts and dimethyl silicone polymer 4 parts according to the raw material of quality hundred number;
(8) first time solidifies process: be placed in curing oven by the aluminium alloy extrusions having sprayed priming paint and be cured, solidification temperature is 80 DEG C, and hardening time is 20min;
(9) topcoating: utilize electrostatic power spraying apparatus to be sprayed on by topcoat paint and treat plastic-blasting aluminium alloy section surface, the coating thickness of described finish paint is 18mm; Finish paint comprises dimethylacetylamide 60 parts, titanium dioxide 18 parts, polyurethane 8 parts, butyl acetate 8 parts, dimethyl silicone polymer 1 part and pigment 5 parts according to the raw material of quality hundred number;
(10) second time solidifies process: be placed in curing oven by the aluminium alloy extrusions having sprayed finish paint and be cured, solidification temperature is 120 DEG C, and hardening time is 15min;
(11) finishing varnish is sprayed: utilize electrostatic power spraying apparatus that finishing varnish spray painting is being treated plastic-blasting aluminium alloy section surface, the coating thickness of described finishing varnish is 12mm;
(12) third time solidifies process: be placed in curing oven by the aluminium alloy extrusions having sprayed finishing varnish and be cured, solidification temperature is 150 DEG C, and hardening time is 15min;
(13) detect, pack warehouse-in.
The aluminium alloy section surface that plastic-blasting of the present invention obtains is not only attractive in appearance but also have texture, can meet the user demand of more occasions, simultaneously, the oxidation resistance on aluminium alloy top layer is greatly improved, and has good antiseptic effect, strong adhesion, can not noxious material be produced, free from environmental pollution.
To those skilled in the art, obviously the invention is not restricted to the details of above-mentioned one exemplary embodiment, and when not deviating from spirit of the present invention or essential characteristic, the present invention can be realized in other specific forms.Therefore, no matter from which point, all should embodiment be regarded as exemplary, and be nonrestrictive, scope of the present invention is limited by claims instead of above-mentioned explanation, and all changes be therefore intended in the implication of the equivalency by dropping on claim and scope are included in the present invention.
In addition, be to be understood that, although this description is described according to embodiment, but not each embodiment only comprises an independently technical scheme, this narrating mode of description is only for clarity sake, those skilled in the art should by description integrally, and the technical scheme in each embodiment also through appropriately combined, can form other embodiments that it will be appreciated by those skilled in the art that.
Claims (6)
1. a surface plastic spraying technique for aluminium alloy extrusions, is characterized in that, comprise the following steps,
(1) dedusting: the dust treating the aluminium alloy section surface of plastic-blasting with the compressed air of 0.5-0.6MPa carries out dust removal process;
(2) deoil: the aluminium alloy extrusions after dedusting being put into temperature is that the degreaser of 25-35 DEG C soaks 2-3 minute;
(3) wash: rinsed well by the aluminium alloy extrusions clear water after deoiling, washing time is 2-3 minute; Then at 45-55 DEG C of temperature, 20-30min is toasted;
(4) surface treatment: the aluminium alloy extrusions after cleaning is immersed in surface treatment liquid and soaks 3-4 minute;
(5) secondary washing: rinsed well by the aluminium alloy extrusions clear water after surface treatment, washing time is 1-2 minute; Then at 45-55 DEG C of temperature, 20-30min is toasted;
(6) primer spray: utilize electrostatic power spraying apparatus to be sprayed on by primer base and treat plastic-blasting aluminium alloy section surface, the coating thickness of described priming paint is 12-15mm;
(7) first time solidifies process: be placed in curing oven by the aluminium alloy extrusions having sprayed priming paint and be cured, solidification temperature is 80-150 DEG C, and hardening time is 15-20min;
(8) topcoating: utilize electrostatic power spraying apparatus to be sprayed on by topcoat paint and treat plastic-blasting aluminium alloy section surface, the coating thickness of described finish paint is 18-25mm;
(9) second time solidifies process: be placed in curing oven by the aluminium alloy extrusions having sprayed finish paint and be cured, solidification temperature is 80-150 DEG C, and hardening time is 15-20min;
(10) finishing varnish is sprayed: utilize electrostatic power spraying apparatus that finishing varnish spray painting is being treated plastic-blasting aluminium alloy section surface, the coating thickness of described finishing varnish is 8-12mm;
(11) third time solidifies process: be placed in curing oven by the aluminium alloy extrusions having sprayed finishing varnish and be cured, solidification temperature is 80-150 DEG C, and hardening time is 15-20min;
(12) detect, pack warehouse-in.
2. the surface plastic spraying technique of aluminium alloy extrusions according to claim 1, is characterized in that, before dedusting, also needs to aluminium alloy extrusions by test, to reject the aluminium alloy extrusions of obvious distortion, bubble and coarse defect.
3. the surface plastic spraying technique of aluminium alloy extrusions according to claim 1, is characterized in that, described degreaser is according to phosphoric acid 65-75%, the citric acid 8-12% of mass percentage concentration and sodium nitrate 6-11%.
4. the surface plastic spraying technique of aluminium alloy extrusions according to claim 1, it is characterized in that, described surface treatment liquid comprises Kynoar 8-15%, sodium nitrate 0.5-1%, oxygen base vanadium trichloride 2-3%, citric acid 5-8%, hydrofluoric acid ammonium 2-3% and potassium permanganate 0.6-0.8% according to the raw material of mass percentage concentration.
5. the surface plastic spraying technique of aluminium alloy extrusions according to claim 1, it is characterized in that, described priming paint comprises thermoplastic acrylic resin 45-60 part, ethyl acetate 15-22 part, 600-700 object magnesium powder 18-22 part, propylene glycol monopropyl ether 4-7 part and dimethyl silicone polymer 3-4 part according to the raw material of quality hundred number.
6. the surface plastic spraying technique of aluminium alloy extrusions according to claim 1, it is characterized in that, described finish paint comprises dimethylacetylamide 40-60 part, titanium dioxide 15-25 part, polyurethane 8-10 part, butyl acetate 8-12 part, dimethyl silicone polymer 1-3 part and pigment 5-10 part according to the raw material of quality hundred number.
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Cited By (9)
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| CN105598010A (en) * | 2015-12-26 | 2016-05-25 | 安徽世林照明股份有限公司 | Painting technology for aluminum material of LED lamp |
| CN105642527A (en) * | 2016-03-04 | 2016-06-08 | 芜湖市金宇石化设备有限公司 | Coating process for fluid loading and unloading arm |
| CN105665259A (en) * | 2016-01-14 | 2016-06-15 | 阳光电源股份有限公司 | Surface plastic powder spraying method for realizing corrosion prevention and weather resistance of aluminum plate and aluminum plate |
| CN106345669A (en) * | 2016-10-10 | 2017-01-25 | 核工业二三0研究所 | Method for preparing plated piece for 210Po measurement |
| CN107303778A (en) * | 2016-04-18 | 2017-10-31 | 广东高登铝业有限公司 | A kind of aluminium material surface processing method |
| CN107413606A (en) * | 2017-07-12 | 2017-12-01 | 天鹅铝业有限公司 | A kind of process that electrostatic spraying is carried out to aluminium material surface |
| CN110370405A (en) * | 2019-07-24 | 2019-10-25 | 南通优氟防腐科技有限公司 | A kind of plastic-blasting method of safety and environmental protection that realizing that plate anti-corrosion is weather-proof |
| CN112221901A (en) * | 2020-09-30 | 2021-01-15 | 海南博展实业有限公司 | Spraying process for steel surface |
| CN116396679A (en) * | 2023-03-31 | 2023-07-07 | 陕西科技大学 | Preparation method of wear-resistant super-hydrophobic coating and wear-resistant super-hydrophobic surface treatment method |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105598010A (en) * | 2015-12-26 | 2016-05-25 | 安徽世林照明股份有限公司 | Painting technology for aluminum material of LED lamp |
| CN105665259A (en) * | 2016-01-14 | 2016-06-15 | 阳光电源股份有限公司 | Surface plastic powder spraying method for realizing corrosion prevention and weather resistance of aluminum plate and aluminum plate |
| CN105642527A (en) * | 2016-03-04 | 2016-06-08 | 芜湖市金宇石化设备有限公司 | Coating process for fluid loading and unloading arm |
| CN107303778A (en) * | 2016-04-18 | 2017-10-31 | 广东高登铝业有限公司 | A kind of aluminium material surface processing method |
| CN106345669A (en) * | 2016-10-10 | 2017-01-25 | 核工业二三0研究所 | Method for preparing plated piece for 210Po measurement |
| CN107413606A (en) * | 2017-07-12 | 2017-12-01 | 天鹅铝业有限公司 | A kind of process that electrostatic spraying is carried out to aluminium material surface |
| CN110370405A (en) * | 2019-07-24 | 2019-10-25 | 南通优氟防腐科技有限公司 | A kind of plastic-blasting method of safety and environmental protection that realizing that plate anti-corrosion is weather-proof |
| CN112221901A (en) * | 2020-09-30 | 2021-01-15 | 海南博展实业有限公司 | Spraying process for steel surface |
| CN116396679A (en) * | 2023-03-31 | 2023-07-07 | 陕西科技大学 | Preparation method of wear-resistant super-hydrophobic coating and wear-resistant super-hydrophobic surface treatment method |
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Application publication date: 20151007 |
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| RJ01 | Rejection of invention patent application after publication |