CN104562057A - All-chemical anticorrosive treatment method for high-tension transmission line iron tower - Google Patents
All-chemical anticorrosive treatment method for high-tension transmission line iron tower Download PDFInfo
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- CN104562057A CN104562057A CN201510013252.2A CN201510013252A CN104562057A CN 104562057 A CN104562057 A CN 104562057A CN 201510013252 A CN201510013252 A CN 201510013252A CN 104562057 A CN104562057 A CN 104562057A
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Abstract
The invention relates to an all-chemical anticorrosive treatment method for a high-tension transmission line iron tower. The method comprises the following steps: (1) removing metal surface oil stains by using a surfactant; (2) removing rust from the lower part of the high-tension transmission line iron tower by using chlorohydric acid pickling solution; (3) removing rust from the upper part of the high-tension transmission line iron tower by using pickling passivation paste; (4) brushing the iron and steel surface with alkaline oxidation liquid, and performing chemical conversion treatment on the iron and steel surface; (5) brushing the iron and steel surface subjected to chemical conversion treatment with epoxy zinc rich primer; (6) brushing the iron and steel surface brushed with the epoxy zinc rich primer by using epoxy mica iron intermediate coat; and (7) brushing the iron and steel surface brushed with the epoxy mica iron intermediate coat by using epoxy resin finish. According to the method disclosed by the invention, each formula ingredient is reasonable, the process operation is applicable, the working efficiency is improved, and the effect is good.
Description
Technical field
The invention belongs to electric power pylon technical field of anticorrosion, especially a kind of full chemical anti-corrosion treatment method of high-voltage transmission line towers.
Background technology
The existing history for a long time of anticorrosion with coat erosion; being covered by corrosion-resistant material in various ways on protected steel tower ground makes it directly not contact with corrosive medium and exempt from the method for corrosion; in conjunction with the electrochemical theory of metal; the corrosion-resisting function of coating mainly contains following content: (1) shielding effect; protective system can stop or suppress water, oxygen and ion permeable paint film that corrosive medium and metal are isolated, thus prevents from forming corrosion cell or suppressing it movable.(2) electricresistance effect of paint film, in corrosion cell loop, people cannot stop at metal inside electronics from anode to cathode flow, but the good paint film that insulate can suppress the stripping of solution middle-jiao yang, function of the spleen and stomach metal ion and the electric discharge phenomena of negative electrode.(3) corrosion inhibition of coating and passivation.(4) galvanic protection effect, forms tectum containing a large amount of anode metal compositions in coating on metallic matrix, and this is that protective system protection metal exempts from the Main Function corroding and increase the service life.But and should require to select the kind of coating, quality and rational material and proportioning according to the character of non-corrosive metal (NCM) component in actual anticorrosion engineering, with the particular requirement of outstanding hardware work, avoid coating material itself and ageing products to bring adverse influence to equipment safety operation, reach best use and preservative effect.
To metal finishing work in conjunction with job site particular case, as the number of rust surface, the size and execution conditions etc. of the degree of depth, old lacquer painting and the corresponding measure taked.One or several in general optional following methods are with the use of to reach simple and quick processing intent.Manual scrubbing: carry out scrubbing with instruments such as emery paper, scraper, iron wire brush and hammers, the method labour intensity is only suitable for the scrubbing work of small area local.Machinery scrubbing: this is a kind of method for separating polluted particles utilizing the effect of the impact friction of mechanical power instrument to carry out, conventional pneumatic brush, de-scaling gun, powered brush and electric wheel etc., and this method efficiency is high, and quality is good, but only suitable lower operation, high-altitude construction is more difficult.Sandblasting scrubbing: utilize air compressor, with 0.4 ~ 0.6MPa pressure, sand is sprayed onto equipment surface, with impact friction effect removing metallic surface dirt and iron rust, the most effective method for separating polluted particles, after sandblasting, steel surface is coarse, increase area, surface forms rugged zig-zag, increases the sticking power of paint film and iron and steel.But this kind of technique is constructed more favourable to large-area metal and has certain suffering to the construction of the steel tower of steel angle structure.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of full chemical anti-corrosion treatment method of high-voltage transmission line towers is provided.
The present invention solves its technical problem and takes following technical scheme to realize:
A full chemical anti-corrosion treatment method for high-voltage transmission line towers, comprises step as follows::
(1) use removal of surfactant metallic surface oil stain, the working temperature of tensio-active agent is 60 ~ 80 DEG C, treatment time 3 ~ 5min, and residue from metal surface, after tensio-active agent deoils, with water cleaning down metallic surface, is removed in metallic surface;
(2) use hydrochloric acid pickler to remove iron rust to high-voltage transmission line towers bottom, the treatment time removes with iron rust and is totally limited, and acid solution residual on metal and reaction product is rinsed well after hydrochloric acid pickler rust cleaning with clear water;
(3) use acid wash passivation cream to remove iron rust to high-voltage transmission line towers top, acid wash passivation cream is applied to cleaned surface, and thickness is 1mm ~ 3mm, and the time is removed with iron rust and is as the criterion, and is rinsed well by residue after iron rust Ex-all with clear water;
(4) use alkaline oxygenated liquid brushing steel surface, chemical conversion treatment is carried out to steel surface, after chemical conversion treatment is carried out to steel surface, with clear water, residue is rinsed well;
(5) epoxy zinc rich primer is brushed to the steel surface after chemical conversion treatment;
(6) epoxy micaceous iron intermediate coat is brushed to the steel surface of brushing epoxy zinc rich primer;
(7) epoxy resin finish is brushed to the steel surface of brushing epoxy micaceous iron intermediate coat, complete the full chemical anti-corrosion treatment of steel tower.
And the one formula of tensio-active agent is in described step (1): contain in every aqueous solution:
Polyoxyethylene aliphatic alcohol ether: 20 ~ 25g/L
Tertiary sodium phosphate: 30 ~ 50g/L.
And the another kind formula of tensio-active agent is in described step (1): contain in every aqueous solution
664 washing composition: 10 ~ 15g/L
105 washing composition: 10 ~ 15g/L
Sodium hydroxide: 30 ~ 50g/L.
And the mass percent component of hydrochloric acid pickler is in described step (2):
Hydrochloric acid: 3% ~ 7%
Inhibiter (urotropine): 0.3%
Water: 93% ~ 97%.
And, the following component formed by ratio of weight and the number of copies of acid wash passivation cream in described step (3):
And the alkaline oxygenated liquid in described step (4) is specially: containing sodium hydroxide 2% ~ 5%, the aqueous solution of Sodium Nitrite 15%.
Advantage of the present invention and positively effect are:
Each group of formula in the present invention is reasonable, and technological operation is suitable for, and improves working efficiency, and respond well.
Accompanying drawing explanation
Fig. 1 is carbon steel corrosion test piece with the schematic diagram after rust remover, degreaser and Passivation Treatment;
Fig. 2 be test piece after process through the test piece of priming paint, intermediate coat and finish paint three after road thin layer brushing, place in saturated steam after 30 days at ambient temperature, take out the situation schematic diagram checked.
Embodiment
Be further described the invention process below, following examples are descriptive, are not determinate, can not limit protection scope of the present invention with this.
A full chemical anti-corrosion treatment method for high-voltage transmission line towers, the step of the method comprises:
(1) removal of surfactant metallic surface oil stain is used; For pending metal parts, after only having the greasy dirt on metallic surface, corrosion thing to remove, dope layer firmly could be combined with metal, acid pickling and rust removing can remove iron and steel corrosion thing, but when there being oil to be present in metallic surface, pickle solution will be isolated contact with corrosion and do not reach the object of acid pickling and rust removing, if therefore metal-derusting face has grease should first by oily Ex-all.Adopted organic solvent or alkali liquor oil removing not only dangerous but also inconvenient and contaminate environment in the past; Tensio-active agent is used for cleaning, respond well, particularly nonionogenic tenside, has very strong degreasing power, the organic solvents such as gasoline can be replaced, because use temperature is low, foam is few, also has certain antirust ability, not corroding metal, harmless, the advantage of use safety, so the nonionogenic tenside formula that the present invention determines is as follows:
Formula 1, each component materials content in every aqueous solution is:
Polyoxyethylene aliphatic alcohol ether: 20 ~ 25g/L
Tertiary sodium phosphate: 30 ~ 50g/L;
Formula 2, containing aniorfic surfactant except oil formula, each component materials content in every aqueous solution is:
664 washing composition: 10 ~ 15g/L
105 washing composition: 10 ~ 15g/L
Sodium hydroxide: 30 ~ 50g/L;
The working temperature of above-mentioned two kinds of formulas is 60 ~ 80 DEG C, treatment time 3 ~ 5min; Metallic surface after above-mentioned tensio-active agent deoils, with water cleaning down metallic surface, to remove residue from metal surface;
(2) hydrochloric acid pickler is used to remove iron rust to high-voltage transmission line towers bottom; The iron rust of metallic surface is for the oxide compound (Fe of iron and steel mainly iron
3o
4, Fe
2o
3, FeO), iron and steel with acid contact the iron rust that can remove steel surface.Pickle solution can select hydrochloric acid, sulfuric acid, nitric acid, but the rust cleaning ability of hydrochloric acid is strong, and the dissolution rate of iron rust is fast, and low price, selects hydrochloric acid pickler as the rust removing solution in the inventive method, and the mass percent formula of hydrochloric acid pickler is:
Hydrochloric acid: 3% ~ 7%
Inhibiter (urotropine): 0.3%
Water: 93% ~ 97%;
Treatment time removes with iron rust and is totally limited; With clear water, acid solution residual on metal and reaction product are rinsed well after hydrochloric acid pickler rust cleaning;
(3) acid wash passivation cream is used to remove iron rust to high-voltage transmission line towers top; For steel tower top, the rust cleaning of position, high-altitude application hydrochloric acid pickler is more difficult, also dangerous, in order to the corrosion removed on steel tower upper metal part can adopt pickling paste to eliminate rust, still can well be eliminated rust effect, and the formula of the acid wash passivation cream that the present invention determines comprises the following component formed by ratio of weight and the number of copies:
Acid wash passivation cream is applied to cleaned surface, and thickness is 1mm ~ 3mm, and the time is removed with iron rust and is as the criterion, and counterweight is embroidered once to remove and repeatedly can be applied cream not to the utmost for several times; Rinsed well by residue with clear water after iron rust Ex-all, after using the rust cleaning of acid wash passivation cream, chemical conversion treatment can not be made in ferrous metal face;
(4) use alkaline oxygenated liquid brushing steel surface, chemical conversion treatment is carried out to steel surface; Alkaline oxygenated liquid is specially: containing sodium hydroxide 2% ~ 5%, the aqueous solution of Sodium Nitrite 15%; After carrying out chemical conversion treatment to steel surface, rinsed well by residue with clear water, the galvanized iron sheet after oil removing, rust cleaning and chemical conversion treatment as shown in Figure 1;
(5) epoxy zinc rich primer is brushed to the steel surface after chemical conversion treatment;
(6) epoxy micaceous iron intermediate coat is brushed to the steel surface of brushing epoxy zinc rich primer;
(7) epoxy resin finish is brushed to the steel surface of brushing epoxy micaceous iron intermediate coat, complete the full chemical anti-corrosion treatment of steel tower, test piece after process is through the test piece of priming paint, intermediate coat and finish paint three after road thin layer brushing, place in saturated steam at ambient temperature after 30 days, take out the situation checked, as shown in Figure 2.
Claims (6)
1. a full chemical anti-corrosion treatment method for high-voltage transmission line towers, is characterized in that comprising step as follows::
(1) use removal of surfactant metallic surface oil stain, the working temperature of tensio-active agent is 60 ~ 80 DEG C, treatment time 3 ~ 5min, and residue from metal surface, after tensio-active agent deoils, with water cleaning down metallic surface, is removed in metallic surface;
(2) use hydrochloric acid pickler to remove iron rust to high-voltage transmission line towers bottom, the treatment time removes with iron rust and is totally limited, and acid solution residual on metal and reaction product is rinsed well after hydrochloric acid pickler rust cleaning with clear water;
(3) use acid wash passivation cream to remove iron rust to high-voltage transmission line towers top, acid wash passivation cream is applied to cleaned surface, and thickness is 1mm ~ 3mm, and the time is removed with iron rust and is as the criterion, and is rinsed well by residue after iron rust Ex-all with clear water;
(4) use alkaline oxygenated liquid brushing steel surface, chemical conversion treatment is carried out to steel surface, after chemical conversion treatment is carried out to steel surface, with clear water, residue is rinsed well;
(5) epoxy zinc rich primer is brushed to the steel surface after chemical conversion treatment;
(6) epoxy micaceous iron intermediate coat is brushed to the steel surface of brushing epoxy zinc rich primer;
(7) epoxy resin finish is brushed to the steel surface of brushing epoxy micaceous iron intermediate coat, complete the full chemical anti-corrosion treatment of steel tower.
2. the full chemical anti-corrosion treatment method of high-voltage transmission line towers according to claim 1, is characterized in that: in described step (1), the one formula of tensio-active agent is: contain in every aqueous solution:
Polyoxyethylene aliphatic alcohol ether: 20 ~ 25 g/L
Tertiary sodium phosphate: 30 ~ 50 g/L.
3. the full chemical anti-corrosion treatment method of high-voltage transmission line towers according to claim 1, is characterized in that: in described step (1), the another kind formula of tensio-active agent is: contain in every aqueous solution
664 washing composition: 10 ~ 15 g/L
105 washing composition: 10 ~ 15 g/L
Sodium hydroxide: 30 ~ 50 g/L.
4. the full chemical anti-corrosion treatment method of high-voltage transmission line towers according to claim 1, is characterized in that: in described step (2), the mass percent component of hydrochloric acid pickler is:
Hydrochloric acid: 3% ~ 7%
Urotropine: 0.3%
Water: 93% ~ 97%.
5. the full chemical anti-corrosion treatment method of high-voltage transmission line towers according to claim 1, is characterized in that: the following component formed by ratio of weight and the number of copies of acid wash passivation cream in described step (3):
6. the full chemical anti-corrosion treatment method of high-voltage transmission line towers according to claim 1, is characterized in that: the alkaline oxygenated liquid in described step (4) is specially: containing sodium hydroxide 2% ~ 5%, the aqueous solution of Sodium Nitrite 15%.
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| CN201510013252.2A CN104562057A (en) | 2015-01-12 | 2015-01-12 | All-chemical anticorrosive treatment method for high-tension transmission line iron tower |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106040566A (en) * | 2016-05-26 | 2016-10-26 | 江西固德实业有限公司 | Cleaning and maintaining method for power transmission and transformation line iron tower |
| CN107214600A (en) * | 2017-06-02 | 2017-09-29 | 中国航发北京航空材料研究院 | A kind of method that novel site quickly removes corrosion product with steel matrix |
| CN107740089A (en) * | 2017-09-06 | 2018-02-27 | 芜湖徽艺坊铁画工艺品有限公司 | A kind of iron picture surface anticorrosive treatment method |
| CN108384344A (en) * | 2018-02-05 | 2018-08-10 | 合肥华盖光伏科技有限公司 | A kind of corrosion-resistant protective paint of photovoltaic power plant bracket |
| CN108690977A (en) * | 2017-04-12 | 2018-10-23 | 国网山东省电力公司电力科学研究院 | A kind of electric power pylon Corrosion Maintenance method |
| CN110004438A (en) * | 2019-04-16 | 2019-07-12 | 广东中赫建筑装饰设计工程有限公司 | 304 steel surface treatment methods |
| CN110565677A (en) * | 2019-09-05 | 2019-12-13 | 国家电网有限公司 | anticorrosion treatment method for contact part between power transmission iron tower and foundation |
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| EP1829944A1 (en) * | 2006-03-01 | 2007-09-05 | Cytec Surface Specialties Austria GmbH | Water-borne cationic binders for wash primers |
| CN102518333A (en) * | 2011-12-30 | 2012-06-27 | 山东省呈祥电工电气有限公司 | Pollution flashover-prevention, corrosion-prevention and freezing-prevention electric tower and surface treatment method thereof |
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| EP1829944A1 (en) * | 2006-03-01 | 2007-09-05 | Cytec Surface Specialties Austria GmbH | Water-borne cationic binders for wash primers |
| CN102518333A (en) * | 2011-12-30 | 2012-06-27 | 山东省呈祥电工电气有限公司 | Pollution flashover-prevention, corrosion-prevention and freezing-prevention electric tower and surface treatment method thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106040566A (en) * | 2016-05-26 | 2016-10-26 | 江西固德实业有限公司 | Cleaning and maintaining method for power transmission and transformation line iron tower |
| CN108690977A (en) * | 2017-04-12 | 2018-10-23 | 国网山东省电力公司电力科学研究院 | A kind of electric power pylon Corrosion Maintenance method |
| CN107214600A (en) * | 2017-06-02 | 2017-09-29 | 中国航发北京航空材料研究院 | A kind of method that novel site quickly removes corrosion product with steel matrix |
| CN107740089A (en) * | 2017-09-06 | 2018-02-27 | 芜湖徽艺坊铁画工艺品有限公司 | A kind of iron picture surface anticorrosive treatment method |
| CN108384344A (en) * | 2018-02-05 | 2018-08-10 | 合肥华盖光伏科技有限公司 | A kind of corrosion-resistant protective paint of photovoltaic power plant bracket |
| CN110004438A (en) * | 2019-04-16 | 2019-07-12 | 广东中赫建筑装饰设计工程有限公司 | 304 steel surface treatment methods |
| CN110565677A (en) * | 2019-09-05 | 2019-12-13 | 国家电网有限公司 | anticorrosion treatment method for contact part between power transmission iron tower and foundation |
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Application publication date: 20150429 |