CN102061411B - Anticorrosion grounding material - Google Patents
Anticorrosion grounding material Download PDFInfo
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- CN102061411B CN102061411B CN2010105529437A CN201010552943A CN102061411B CN 102061411 B CN102061411 B CN 102061411B CN 2010105529437 A CN2010105529437 A CN 2010105529437A CN 201010552943 A CN201010552943 A CN 201010552943A CN 102061411 B CN102061411 B CN 102061411B
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- rare earth
- zinc
- copper
- soil
- aluminium
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- 239000000463 material Substances 0.000 title claims abstract description 31
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 53
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 33
- 239000011701 zinc Substances 0.000 claims abstract description 33
- 239000000956 alloy Substances 0.000 claims abstract description 32
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 31
- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract description 30
- 229910052802 copper Inorganic materials 0.000 claims abstract description 28
- 239000010949 copper Substances 0.000 claims abstract description 28
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 27
- -1 aluminum-copper-zinc rare earth Chemical class 0.000 claims abstract description 23
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 12
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052742 iron Inorganic materials 0.000 claims abstract description 6
- 150000002910 rare earth metals Chemical class 0.000 claims abstract description 6
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 6
- 239000010703 silicon Substances 0.000 claims abstract description 6
- 229910045601 alloy Inorganic materials 0.000 claims description 27
- 229910000906 Bronze Inorganic materials 0.000 claims description 23
- 239000004411 aluminium Substances 0.000 claims description 23
- 239000010974 bronze Substances 0.000 claims description 23
- 238000005266 casting Methods 0.000 claims description 14
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 5
- 238000001192 hot extrusion Methods 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 claims description 4
- 239000002994 raw material Substances 0.000 claims description 4
- 238000007670 refining Methods 0.000 claims description 4
- 238000005070 sampling Methods 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 4
- 229910052684 Cerium Inorganic materials 0.000 claims description 3
- 229910052779 Neodymium Inorganic materials 0.000 claims description 3
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 claims description 3
- 229910052746 lanthanum Inorganic materials 0.000 claims description 3
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 claims description 3
- QEFYFXOXNSNQGX-UHFFFAOYSA-N neodymium atom Chemical compound [Nd] QEFYFXOXNSNQGX-UHFFFAOYSA-N 0.000 claims description 3
- 229910052727 yttrium Inorganic materials 0.000 claims description 2
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 claims description 2
- 239000002689 soil Substances 0.000 abstract description 31
- 229910001385 heavy metal Inorganic materials 0.000 abstract description 4
- 239000000758 substrate Substances 0.000 abstract description 2
- 238000005260 corrosion Methods 0.000 description 21
- 230000007797 corrosion Effects 0.000 description 21
- 230000004580 weight loss Effects 0.000 description 8
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 4
- 230000003628 erosive effect Effects 0.000 description 4
- 229910001335 Galvanized steel Inorganic materials 0.000 description 3
- 239000000470 constituent Substances 0.000 description 3
- 239000008397 galvanized steel Substances 0.000 description 3
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical compound [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 description 1
- YXLXNENXOJSQEI-UHFFFAOYSA-L Oxine-copper Chemical compound [Cu+2].C1=CN=C2C([O-])=CC=CC2=C1.C1=CN=C2C([O-])=CC=CC2=C1 YXLXNENXOJSQEI-UHFFFAOYSA-L 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- WPPDFTBPZNZZRP-UHFFFAOYSA-N aluminum copper Chemical compound [Al].[Cu] WPPDFTBPZNZZRP-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 229910001431 copper ion Inorganic materials 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 230000002335 preservative effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Abstract
The invention discloses an anticorrosion grounding material, which comprises the following components in percentage by mass: 77 to 88 percent of aluminum, 3 to 8 percent of copper, 7 to 15 percent of zinc, less than 1.5 percent of iron, less than 1.5 percent of silicon, and 0.001 to 0.5 percent of rare earth. The aluminum-copper-zinc rare earth alloy material taking aluminum as a substrate combines the conductivity of copper and the anticorrosion performance of aluminum and zinc, meets the use requirements of a grounding grid, and greatly reduces pollution of heavy metals to soil.
Description
Technical field
The present invention relates to a kind of earthing material, especially for the alloy ground material of power system ground net (body).
Background technology
Ground net (body) is the necessary facility that guarantees power system device and personnel safety, is the important leverage of generating, power transformation and transmission system safe operation.The earthing material that adopts at present is mainly galvanized steel and fine copper.The subject matter that adopts galvanized steel to do the earthing material existence is that erosion rate is higher in soil, and heavy corrosion appears in the zinc-plated earthing material of operation 5-10, even rust is disconnected; Cause stake resistance to raise; Diffusing stream reduces, and when suffering thunder and lightning or short circuit, causes accident, can't guarantee electric power netting safe running.Fine copper is good grounding material, and its conducting and diffusing stream ability are strong, and anti-soil corrosion performance is good, can guarantee the ground net reliability service 25～30 years.But copper imbedding in a large number in soil can be caused heavy metal contamination; In China soil environment quality standard GB15618-1995, be limited to use (content of copper ion should be lower than 400mg/kg in the regulation soil); And the price of copper is high, and its ground net cost is 5～6 times of galvanized steel.Patent CN101580909A discloses a kind of ground net and has used aluminum copper alloy material, and this kind material mainly contains aluminum bronze and rare earth mixes, and in conjunction with the electroconductibility of copper and the preservative property of aluminium, satisfies the ground net request for utilization.Although the passivation protection better performances of aluminium has improved erosion resistance to a certain extent, because the potential difference of copper and aluminium is big, the tendency of aluminum substrate generation unsymmetrical corrosion is still bigger.
Summary of the invention
The object of the present invention is to provide a kind of anticorrosive earthing material.The anti-soil corrosion of this earthing material, good conductivity, long service life, cost is low.
The technical scheme that technical solution problem of the present invention is adopted is:
A kind of anticorrosive earthing material, its mass percent consists of: aluminium 77%～88%, copper 3%～8%, zinc 7%～15%, iron＜1.5%, silicon＜1.5%, rare earth 0.001%～0.5%.
Described rare earth is at least a in lanthanum, cerium, neodymium, the yttrium.
The preparation method of anticorrosive earthing material: with the aluminium ingot heat fused, add other each raw-material mother alloy in proportion, when furnace charge fully fusing in the molten bath; The stirring of skimming; Sampling detects the adjustment composition then, refining, and coming out of the stove pours into aluminum bronze zinc rare earth alloy ingot casting; Adopt hot extrusion technique that ingot casting is pushed, be processed into the shape of product that is applicable to that ground net requires.
Described teeming temperature is 690～750 ℃.
The Heating temperature of described hot extrusion technique aluminum bronze zinc rare earth alloy ingot casting is 440～460 ℃.
Copper has the good ground connection conduction and the performance of anti-soil corrosion simultaneously; Its major cause is owing to the hydrous oxide of the corrosion product-copper that generates, vitriol etc. have higher specific conductivity; Possess slower growth velocity simultaneously, matrix is had the excellent protection performance.Aluminum and zinc is easy passive metal, can generate uniform zinc oxide and pellumina, has corrosion resistance nature preferably.The corrosion product Al of aluminium in soil
2O
3, Al (OH)
3Electroconductibility is relatively poor, and the corrosion product of zinc in soil then has excellent conducting performance.The electropotential of zinc and aluminium is all low than copper, has the effect of sacrificial protection copper.Therefore, alloying constituent compatibility of the present invention is when utilizing copper to guarantee that alloy has excellent conducting performance, to have good anti-soil corrosion performance again; The adding of a small amount of REE, effectively crystal grain thinning purifies crystal boundary, further improves the corrosion resistance nature of material.Iron and silicon are impurity element.Of the present invention is the aluminum bronze zinc rare-earth alloy material of matrix with the aluminium element, and the corrosion resistance nature in conjunction with the electroconductibility of copper and aluminium, zinc satisfies the ground net request for utilization, has reduced the pollution of heavy metal to soil simultaneously significantly.
Compare with prior art, the erosion resistance and the earth-continuity property of aluminum bronze zinc rare earth alloy of the present invention are suitable with fine copper, and cost is lower than fine copper, and can reduce the pollution of heavy metal to soil significantly.Compare with CN101580909A, owing to the even adding of zinc element, reduced the add-on of copper, dwindled the difference in Electrode Potential between the alloy compositions, reduced to take place the tendency of unsymmetrical corrosion, alloy has better erosion resistance.
Embodiment
Provide specific embodiment of the present invention below.
Embodiment 1
A kind of anticorrosive earthing material, its each constituent mass per-cent is: copper 3%, zinc 15%, lanthanum 0.2%, cerium 0.3%, iron 0.8%, silicon 1%, surplus is an aluminium.
Melting aluminum bronze zinc rare earth alloy ingot casting at first.Aluminium ingot is put into stove heats, treat aluminium ingot fusing after, by above other each raw-material mother alloy of ratio adding; When furnace charge fully fusing in the molten bath, the stirring of skimming, sampling detects the adjustment composition then; Refining, coming out of the stove pours into aluminum bronze zinc rare earth alloy ingot casting, and teeming temperature is 690 ℃.Adopt the anti-phase extrusion process to be hot extruded into the flat bar of 50mm * 5mm on aluminum bronze zinc rare earth alloy ingot casting then, the container Heating temperature is 400～450 ℃, and aluminum bronze zinc rare earth alloy ingot casting Heating temperature is 440～460 ℃.
With the aluminum bronze zinc rare earth alloy flat bar that is prepared into, with the fine aluminium of same size, the sample that the fine copper earthing material is processed into φ 30mm * 4mm, placing into the soil together in the laboratory makes a service test.Through 360 hours high temperature, high-moisture laboratory accelerated test, the contact resistance of three kinds of earthing material samples of kinetic measurement and soil.The contact resistance of aluminum bronze zinc rare earth alloy sample and pure copper samples and soil is equally matched, and resistance is stable, and is starkly lower than the contact resistance of fine aluminium sample and soil.At etching time is 360 hours; The soil moisture is 63.5, and soil moisture content is 20% o'clock, and the contact resistance of pure copper samples and soil is 48.47 Ω; The contact resistance of aluminum bronze zinc rare earth alloy sample and soil is 49.33 Ω, and the contact resistance of fine aluminium sample and soil is 210.2 Ω.Off-test, the corrosion weight loss of three kinds of material samples of calculating.The pure copper material corrosion weight loss is 272.2mg, and the pure aluminum material corrosion weight loss is 78.4mg, and the corrosion weight loss of aluminum bronze zinc rare-earth alloy material of the present invention is 77.8mg.
Embodiment 2
A kind of anticorrosive earthing material, its each constituent mass per-cent is: copper 8%, zinc 7%, neodymium 0.001%, iron 0.7%, silicon 0.8%, surplus is an aluminium.
At first melting aluminum bronze zinc rare earth alloy ingot casting is put into stove with aluminium ingot and is heated, treat aluminium ingot fusing after; Add other each raw-material mother alloy in above ratio, when furnace charge fully fusing in the molten bath, the stirring of skimming; Sampling detects the adjustment composition then; Refining, coming out of the stove pours into aluminum bronze zinc rare earth alloy ingot casting, and teeming temperature is 750 ℃.Adopt the anti-phase extrusion process to be hot extruded into the flat bar of 50mm * 5mm on aluminum bronze zinc rare earth alloy ingot casting then, the container Heating temperature is 400～450 ℃, and aluminum bronze zinc rare earth alloy ingot casting Heating temperature is 440～460 ℃.
With the aluminum bronze zinc rare earth alloy flat bar that is prepared into, with the fine aluminium of same size, the sample that the fine copper earthing material is processed into φ 30mm * 4mm, placing into the soil together in the laboratory makes a service test.Through 360 hours high temperature, high-moisture laboratory accelerated test, the soil contact resistance of three kinds of earthing material samples of kinetic measurement.The contact resistance of aluminum bronze zinc rare earth alloy sample and pure copper samples and soil is equally matched, and resistance is stable, and is starkly lower than the contact resistance of fine aluminium sample and soil.At etching time is 360 hours; The soil moisture is 63.5, and soil moisture content is 20% o'clock, and the contact resistance of pure copper samples and soil is 48.47 Ω; The contact resistance of aluminum bronze zinc rare earth alloy sample and soil is 47.43 Ω, and the contact resistance of fine aluminium sample and soil is 210.2 Ω.Off-test, the corrosion weight loss of three kinds of material samples of calculating.The pure copper material corrosion weight loss is 272.2mg, and the pure aluminum material corrosion weight loss is 78.4mg, and aluminum bronze zinc rare-earth alloy material corrosion weight loss of the present invention is 80.2mg.
Claims (4)
1. an anticorrosive earthing material is characterized in that, its mass percent consists of: aluminium 77%～88%, copper 3%～8%, zinc 7%～15%, iron＜1.5%, silicon＜1.5%, rare earth 0.001%～0.5%; Described rare earth is at least a in lanthanum, cerium, neodymium, the yttrium.
2. the preparation method of the described anticorrosive earthing material of claim 1 is characterized in that, with the aluminium ingot heat fused; Add other each raw-material mother alloy in proportion; When furnace charge fully fusing in the molten bath, the stirring of skimming, sampling detects the adjustment composition then; Refining, coming out of the stove pours into aluminum bronze zinc rare earth alloy ingot casting; Adopt hot extrusion technique that ingot casting is pushed, be processed into the shape of product that is applicable to that ground net requires.
3. according to the preparation method of the described anticorrosive earthing material of claim 2, it is characterized in that described teeming temperature is 690～750 ℃.
4. according to the preparation method of the described anticorrosive earthing material of claim 2, it is characterized in that the Heating temperature of described hot extrusion technique aluminum bronze zinc rare earth alloy ingot casting is 440～460 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105529437A CN102061411B (en) | 2010-11-22 | 2010-11-22 | Anticorrosion grounding material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105529437A CN102061411B (en) | 2010-11-22 | 2010-11-22 | Anticorrosion grounding material |
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| Publication Number | Publication Date |
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| CN102061411A CN102061411A (en) | 2011-05-18 |
| CN102061411B true CN102061411B (en) | 2012-07-04 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102560209A (en) * | 2012-01-04 | 2012-07-11 | 山东电力研究院 | Aluminum zinc magnesium rare earth grounding material |
| CN103667825B (en) * | 2013-12-30 | 2016-04-13 | 上海华峰新材料研发科技有限公司 | A kind of ultra-high-strength/tenacity anticorodal and manufacture method thereof |
| CN106469861A (en) * | 2015-08-23 | 2017-03-01 | 国网山东省电力公司临沂供电公司 | A kind of preparation method for electric power line pole tower corrosion-resisting grounding device |
| CN106086534B (en) * | 2016-06-30 | 2017-12-12 | 国网山东省电力公司电力科学研究院 | A kind of aluminium carbon copper alloy earthing material of high-strength corrosion-resisting |
| CN106862796B (en) * | 2017-03-07 | 2019-01-15 | 国网山东省电力公司电力科学研究院 | A kind of aluminium copper earthing material welding wire and preparation method thereof |
| CN109082563A (en) * | 2017-06-14 | 2018-12-25 | 深圳华淮新材料有限公司 | A kind of novel acieral earthing material |
| CN111424198A (en) * | 2020-04-09 | 2020-07-17 | 北京国网弘泰科技有限公司 | Corrosion-resistant aluminum alloy grounding material and manufacturing method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101575681A (en) * | 2009-06-16 | 2009-11-11 | 上海汉欣电线电缆有限公司 | Multi-aluminum-based alloy of cable wire and railway combined through ground wire thereof |
| CN101580909A (en) * | 2009-06-12 | 2009-11-18 | 山东鲁能节能设备开发有限公司 | Aluminum-copper alloy material for grounding network |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002206130A (en) * | 2001-01-04 | 2002-07-26 | Kobe Steel Ltd | Aluminum alloy extrusion material having excellent corrosion resistance in the ground and production method therefor |
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2010
- 2010-11-22 CN CN2010105529437A patent/CN102061411B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101580909A (en) * | 2009-06-12 | 2009-11-18 | 山东鲁能节能设备开发有限公司 | Aluminum-copper alloy material for grounding network |
| CN101575681A (en) * | 2009-06-16 | 2009-11-11 | 上海汉欣电线电缆有限公司 | Multi-aluminum-based alloy of cable wire and railway combined through ground wire thereof |
Non-Patent Citations (2)
| Title |
|---|
| JP特开2002-206130A 2002.07.26 |
| 周开颜等.锌镁合金铜接地材料高效防腐导电性能研究及其应用.《炼油技术与工程》.2010,第40卷(第9期),第29～32页. * |
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| CN102061411A (en) | 2011-05-18 |
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Effective date of registration: 20220126 Address after: 250003 No. 2000, Wang Yue Road, Shizhong District, Ji'nan, Shandong Patentee after: ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER Co. Patentee after: STATE GRID CORPORATION OF CHINA Address before: 250003 No. 2000, Wang Yue Road, Shizhong District, Ji'nan, Shandong Patentee before: SHANDONG ELECTRIC POWER Research Institute Patentee before: STATE GRID CORPORATION OF CHINA |
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