CN101186998A - Transmission line pole tower long-lasting anticorrosion coating and its preparation process - Google Patents
Transmission line pole tower long-lasting anticorrosion coating and its preparation process Download PDFInfo
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- CN101186998A CN101186998A CN 200710179677 CN200710179677A CN101186998A CN 101186998 A CN101186998 A CN 101186998A CN 200710179677 CN200710179677 CN 200710179677 CN 200710179677 A CN200710179677 A CN 200710179677A CN 101186998 A CN101186998 A CN 101186998A
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- coating
- hot dip
- transmission line
- alloy
- plating
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- 239000011248 coating agent Substances 0.000 title claims abstract description 34
- 238000000576 coating method Methods 0.000 title claims abstract description 34
- 230000005540 biological transmission Effects 0.000 title claims abstract description 11
- 230000005923 long-lasting effect Effects 0.000 title claims description 7
- 238000002360 preparation method Methods 0.000 title claims description 4
- 238000000034 method Methods 0.000 claims abstract description 40
- 238000007747 plating Methods 0.000 claims abstract description 36
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 34
- 239000000956 alloy Substances 0.000 claims abstract description 34
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000011701 zinc Substances 0.000 claims abstract description 12
- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract description 10
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 9
- 238000005516 engineering process Methods 0.000 claims abstract description 9
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 9
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 8
- 150000002910 rare earth metals Chemical class 0.000 claims abstract description 8
- 239000010936 titanium Substances 0.000 claims abstract description 7
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000011777 magnesium Substances 0.000 claims abstract description 5
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims abstract description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 4
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 4
- 238000005275 alloying Methods 0.000 claims description 14
- 238000007654 immersion Methods 0.000 claims description 13
- 239000004411 aluminium Substances 0.000 claims description 5
- 238000002161 passivation Methods 0.000 claims description 4
- 238000012545 processing Methods 0.000 claims description 3
- 238000005238 degreasing Methods 0.000 claims description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 2
- 238000012856 packing Methods 0.000 claims description 2
- 238000005260 corrosion Methods 0.000 abstract description 33
- 230000007797 corrosion Effects 0.000 abstract description 30
- 239000007788 liquid Substances 0.000 abstract description 6
- 238000007598 dipping method Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 239000007769 metal material Substances 0.000 abstract description 2
- 238000004321 preservation Methods 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 12
- 229910000831 Steel Inorganic materials 0.000 description 8
- 239000010959 steel Substances 0.000 description 8
- 239000000470 constituent Substances 0.000 description 7
- 230000008901 benefit Effects 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 239000008199 coating composition Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005246 galvanizing Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910001069 Ti alloy Inorganic materials 0.000 description 2
- 238000003916 acid precipitation Methods 0.000 description 2
- -1 zinc-aluminum-magnesium rare earth Chemical class 0.000 description 2
- 229910000990 Ni alloy Inorganic materials 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 229910001297 Zn alloy Inorganic materials 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000003618 dip coating Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910000765 intermetallic Inorganic materials 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000002481 rotproofing Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- YJVLWFXZVBOFRZ-UHFFFAOYSA-N titanium zinc Chemical compound [Ti].[Zn] YJVLWFXZVBOFRZ-UHFFFAOYSA-N 0.000 description 1
Abstract
Disclosed are a long-acting anti-corrosion alloy coating of a transmission line tower and process technology, belonging to the field of the hot dip of the metallic material of the transmission line tower in electric industry, and the invention is applicable to the corrosion preservation of the hot dip of the surface of the transmission line tower. The anti-corrosion alloy coating is characterized in that the invention comprises the following alloy elements with certain quality content, including that zinc is 32% to 35%, aluminum is 43% to 65%, magnesium is 0.5% to 8%, rare earth nickel is 0.5% to 3%, and titanium is 0.01% to 0.2%. The technique of preparing the coating is characterized in that the hot dip means that coating members are placed in the coating liquid according to the alloy dispensation of the long-acting anti-corrosion alloy coating of a transmission line tower, the temperature of the coating liquid is 430 DEG C to 450 DEG C, and the dip period is three to ten minutes. The alloy coating is simple in hot dip technique. The existing hot dipping device can completely satisfy the manufacture need, the temperature of the hot dip technique is 20 to 40 DEG C lower than that of the existing zinc plating, the process technique of the existing hot dipping can be employed in pre-process and post-process, the brightness of the surface after the dipping is high, the thickness of the alloy layer is even, the thickness of the coating is more than 86 micrometers, and the hot dip lasts for 3 to 10 minutes.
Description
Technical field
It is anticorrosion that the hot dip process technical field that belongs to power industry electric power line pole tower metallic substance, this invention are mainly used in the surface heat immersion plating of electric power line pole tower of power industry.
Background technology
According to the data that Chinese corrosion and protection association provides, Chinese annual steel corrosion loss is about 5,000 hundred million yuan, accounts for 6% of gross national product, if take effective safeguard procedures can make loss reduce 20-30%.The hot dip technology provides the good anti-atomospheric corrosion method of iron and steel.
The aseptic technic of electric power line pole tower mainly is a galvanizing, also adopts the method for paint and anticorrosion with coat technology and usefulness under ocean environment simultaneously.Electric power line pole tower occupies very big proportion in steel construction, the factory that zinc-plated ability is bigger all is distributed in electric power pylon manufacturing concern.Therefore, the raising of electric power line pole tower long-effective corrosion state of the art for the corrosion that reduces steel, prolongs the electric power line pole tower Years Of Service, improves the input-output ratio of transmitting line, and benefit is very remarkable.
By in zinc liquid, adding the method for alloying constituent, deposit one deck alloy layer at steel surface in the hot dip process, improve the corrosion resistance nature of hot-dip coating, thereby improve the protection against corrosion life-span that hot dip process makes up, reduce thickness of coating, both improved the corrosion fatigue life of hot dip process member, save the consumption of plating bath, economize on resources and the energy, reduce discharging, have higher economic and social benefit.Therefore, the hot-dip coated research worldwide of alloy is more active.The alloy layer that occurs has al-zn alloy coating at present, zn-ni alloy deposits, zinc titanium alloy coating etc., its purpose is to control the activity of silicon in the galvanizing process, also obtained certain effect aspect life-span at raising coating, but because the cost height, technology is immature etc., and reason does not all obtain large-scale promotion and application.
Atmospheric environment changes at present, corrosive gases such as sulfide, oxynitride content increases in the atmosphere, electric power line pole tower corrosion under the acid rain environment is accelerated, the ocean environment seriously corroded of coastland, transmitting line every two years all will carry out rotproofing once more, cost is higher, also needs simultaneously to have a power failure to handle, and financial loss is serious.Development and exploitation are suitable for the alloy layer of electric power line pole tower long-effective corrosion, technical and better economy, improve the anticorrosion life-span of electric power line pole tower under complicated corrosion working conditions, and it is anticorrosion and running cost is significant to reduce transmitting line.
The present invention has developed used for hot dip galvanizing zinc-aluminum-magnesium rare earth alloy plating bath and the alloy layer that is used for the electric power line pole tower long-effective corrosion, and electric power line pole tower adopts the hot dip process of zinc-aluminum-magnesium rare earth alloy plating bath and this alloy layer that obtains to yet there are no report in the document at home and abroad under complicated corrosion working conditions.
Summary of the invention
The present invention mainly is devoted to improve the hot-dip coated protection against corrosion life-span of power industry electric power line pole tower.Because the corrosion resistance of alloy ratio pure metal is strong, therefore adopt the method for alloying, designed suitable coating alloy system, solve the hot-dip coated alloying problem of electric power line pole tower.The invention provides a kind of electric power pylon anti-sulfur-bearing atomospheric corrosion, acid rain corrosion and coating alloy system in ocean environment corrosive long-effective corrosion life-span under complicated corrosion working conditions of being suitable for, the protection against corrosion life-span is more than 2 times of hot dipping pure zinc plating.
A kind of transmission line pole tower long-lasting anticorrosion coating is characterized in that, has the alloying element of following mass content in the alloy layer: zinc: 32～55%, and aluminium: 43～65%, magnesium: 0.5～8%, rare earth nickel: 0.5～3%, titanium: 0.01～0.2%.
Wherein each composition effect is as follows:
Zinc: main alloying constituent, form alloy layer, in corrosion process, sacrifice himself, guard bar tower structure spare matrix metal.
Aluminium: main alloying constituent, form intermetallic compound with zinc etc., improve corrosion resistance nature.In the hot dip process process, aluminium in the alloy crystal process of growth, on float to the surface of coating, generate alumina protective layer resistance corrosive in the corrosion process and further carry out, the protection against corrosion advantage of performance aluminium improves the corrosion fatigue life of whole coating.
Magnesium: micro alloying element, the erosion resistance of raising coating.
Rare earth nickel: micro alloying element, improve the performance of coating alloy, refinement coating alloy grain is eliminated the harm of impurity in the coated metal, improves the corrosion resistance nature of coating.
Titanium: micro alloying element, the corrosion resistance of raising coating, the protection against corrosion advantage of performance titanium alloy.
Existing or immersion equipment is adopted in the preparation of alloy layer of the present invention, mainly contains following steps:
Plating piece carries out preceding the taking off rust, degreasing, help plating and dry processing of hot dip process;
Plating piece is put in the plating bath according to the alloy formula of above-mentioned transmission line pole tower long-lasting anticorrosion coating 430 ℃-450 ℃ of bath temperatures, immersion plating plating 3～10 minutes;
Plating piece is taken out from the hot dip process pot, be put into passivation in the passivating solution;
The plating piece that passivation is good cleans, packing.
This alloy layer, or immersion is easy, existing pot galvanize equipment can satisfy the production needs fully, the hot plating technology temperature reduces by 20～40 ℃ than existing zinc-plated temperature, pre-process and post-process can adopt the treatment process of existing pot galvanize, the bright and clean height in plating rear surface, and alloy layer thickness is even, thickness of coating is greater than 86 μ m, 3～10 minutes hot dip process time.
Embodiment
All embodiments all are to adopt existing or immersion equipment, according to all processing steps in front:
Adopting alloying constituent is the alloy immersion plating liquid of table 1, and 430 ℃ of bath temperatures, hot dip angle steel are L100 * 4, and 3 minutes immersion plating time Coating composition sees Table 1, thickness of coating, 95 μ m.
Adopt the alloy immersion plating liquid of table 2,440 ℃ of bath temperatures, hot dip process angle steel L200 * 10,6 minutes immersion plating time, Coating composition sees Table 2, thickness of coating 105 μ m.
Adopt the alloy immersion plating liquid of table 3,450 ℃ of bath temperatures, hot dip process angle steel L400 * 15,10 minutes immersion plating time, Coating composition sees Table 3, thickness of coating 116 μ m.
The alloying constituent of table 1 plating bath (wt%)
| Zn | Al | Mg | Rare earth nickel | Ti |
| 35 | 53.9 | 8 | 3 | 0.1 |
The alloying constituent of table 2 plating bath (wt%)
| Zn | Al | Mg | Rare earth nickel | Ti |
| 55 | 43 | 0.5 | 1.3 | 0.2 |
The alloying constituent of table 3 plating bath (wt%)
| Zn | Al | Mg | Rare earth nickel | Ti |
| 32 | 65 | 2.49 | 0.5 | 0.01 |
Rare earth nickel
| Ni | Ce/R | La/R | Pr/R | Nd/R | Fe |
| 44.372 | 8.76 | 24.54 | 5.41 | 16.17 | 0.1 |
| Si | P | Ca | Mn | Mg | |
| 0.025 | 0.003 | 0.01 | 0.1 | 0.51 |
This alloy layer, or immersion is easy, existing pot galvanize equipment can satisfy the production needs fully, the hot plating technology temperature reduces by 20～40 ℃ than existing zinc-plated temperature, pre-process and post-process can adopt the treatment process of existing pot galvanize, the bright and clean height in plating rear surface, and alloy layer thickness is even, thickness of coating is greater than 86m, 3～10 minutes hot dip process time.The protection against corrosion life-span is more than 2 times of hot dipping pure zinc plating.
Claims (2)
1. a transmission line pole tower long-lasting anticorrosion coating is characterized in that, has the alloying element of following mass content in the alloy layer: zinc: 32～55%, and aluminium: 43～65%, magnesium: 0.5～8%, rare earth nickel: 0.5～3%, titanium: 0.01～0.2%.
2. the preparation technology of transmission line pole tower long-lasting anticorrosion coating according to claim 1 comprises that plating piece carries out preceding the taking off rust, degreasing, help plating and dry processing of hot dip process; After the hot dip process plating piece is taken out passivation from the hot dip process pot; The plating piece that passivation is good cleans, packing;
It is characterized in that: hot dip process is for being put into plating piece in the plating bath according to the alloy formula of above-mentioned transmission line pole tower long-lasting anticorrosion coating 430 ℃-450 ℃ of bath temperatures, immersion plating plating 3～10 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101796776A CN101186998B (en) | 2007-12-17 | 2007-12-17 | Transmission line pole tower long-lasting anticorrosion coating and its preparation process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101796776A CN101186998B (en) | 2007-12-17 | 2007-12-17 | Transmission line pole tower long-lasting anticorrosion coating and its preparation process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101186998A true CN101186998A (en) | 2008-05-28 |
| CN101186998B CN101186998B (en) | 2012-01-11 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101796776A Active CN101186998B (en) | 2007-12-17 | 2007-12-17 | Transmission line pole tower long-lasting anticorrosion coating and its preparation process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101186998B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103375658A (en) * | 2012-04-18 | 2013-10-30 | 新兴铸管股份有限公司 | Zn-Al-Mg composite anticorrosive coating and manufacturing method thereof for cast-iron pipelines |
| CN105672757A (en) * | 2016-01-21 | 2016-06-15 | 苏州润桐专利运营有限公司 | Novel antitheft fence |
| CN105696849A (en) * | 2016-01-21 | 2016-06-22 | 苏州润桐专利运营有限公司 | Novel metal fence |
| CN105970138A (en) * | 2016-05-20 | 2016-09-28 | 国网山东省电力公司高唐县供电公司 | Long-lasting corrosion prevention method of transmission line tower |
| CN109280868A (en) * | 2017-07-20 | 2019-01-29 | 安徽宏源铁塔有限公司 | A kind of galvanized method of electric power tower steel |
| CN110004388A (en) * | 2019-03-11 | 2019-07-12 | 贵州电网有限责任公司 | Carbon nano-tube modification rare earth modifies hot-dip galvanized alloy coating for protection against corrosion and preparation method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2777571B2 (en) * | 1991-11-29 | 1998-07-16 | 大同鋼板株式会社 | Aluminum-zinc-silicon alloy plating coating and method for producing the same |
| CN100362123C (en) * | 2006-02-16 | 2008-01-16 | 无锡麟龙铝业有限公司 | Galvanized steel sheet coating material and its production method |
-
2007
- 2007-12-17 CN CN2007101796776A patent/CN101186998B/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103375658A (en) * | 2012-04-18 | 2013-10-30 | 新兴铸管股份有限公司 | Zn-Al-Mg composite anticorrosive coating and manufacturing method thereof for cast-iron pipelines |
| CN103375658B (en) * | 2012-04-18 | 2016-01-20 | 新兴铸管股份有限公司 | Cast-iron pipe zinc-aluminum-magnesium composite anti-corrosive coating and preparation method thereof |
| CN105672757A (en) * | 2016-01-21 | 2016-06-15 | 苏州润桐专利运营有限公司 | Novel antitheft fence |
| CN105696849A (en) * | 2016-01-21 | 2016-06-22 | 苏州润桐专利运营有限公司 | Novel metal fence |
| CN105970138A (en) * | 2016-05-20 | 2016-09-28 | 国网山东省电力公司高唐县供电公司 | Long-lasting corrosion prevention method of transmission line tower |
| CN109280868A (en) * | 2017-07-20 | 2019-01-29 | 安徽宏源铁塔有限公司 | A kind of galvanized method of electric power tower steel |
| CN110004388A (en) * | 2019-03-11 | 2019-07-12 | 贵州电网有限责任公司 | Carbon nano-tube modification rare earth modifies hot-dip galvanized alloy coating for protection against corrosion and preparation method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101186998B (en) | 2012-01-11 |
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Owner name: NATIONAL ELECTRIC POWER RESEARCH INSTITUTE Free format text: FORMER OWNER: GUOWANG BEIJING POWER BUILDING ACADEMY Effective date: 20090918 |
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Effective date of registration: 20090918 Address after: Beijing City, Haidian District Qinghe small Camp Road No. 15 post encoding: 100192 Applicant after: State Electric Power Research Institute Address before: Beijing City, Xuanwu District Guang'an South Binhe Road No. 33 post encoding: 100055 Applicant before: Beijing Electric Power Construction Research Institute of SGCC |
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Effective date of registration: 20130717 Address after: 100192 Beijing city Haidian District Qinghe small Camp Road No. 15 Patentee after: China Electric Power Research Institute Patentee after: State Grid Corporation of China Address before: 100192 Beijing city Haidian District Qinghe small Camp Road No. 15 Patentee before: China Electric Power Research Institute |