CN106903031A - Improve the preformed shunt bar of aerial condutor or the erosion-resisting method of connecting strip - Google Patents

Improve the preformed shunt bar of aerial condutor or the erosion-resisting method of connecting strip Download PDF

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Publication number
CN106903031A
CN106903031A CN201710237064.7A CN201710237064A CN106903031A CN 106903031 A CN106903031 A CN 106903031A CN 201710237064 A CN201710237064 A CN 201710237064A CN 106903031 A CN106903031 A CN 106903031A
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CN
China
Prior art keywords
connecting strip
preformed
shunt bar
aerial condutor
preformed shunt
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Pending
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CN201710237064.7A
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Chinese (zh)
Inventor
朱慧敏
唐永传
杜宏刚
张都清
高翔
高自彬
王刚
冯璨
张秉良
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Weihai Bituo Electric Power Technology Co ltd
Shandong Zhongshi Yitong Group Co Ltd
Original Assignee
Weihai Ever Power Technology Co Ltd
Shandong Zhong Yuan Power Technology Co Ltd
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Publication date
Application filed by Weihai Ever Power Technology Co Ltd, Shandong Zhong Yuan Power Technology Co Ltd filed Critical Weihai Ever Power Technology Co Ltd
Priority to CN201710237064.7A priority Critical patent/CN106903031A/en
Publication of CN106903031A publication Critical patent/CN106903031A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/04—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases
    • B05D3/0486—Operating the coating or treatment in a controlled atmosphere
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
    • C09D1/02—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances alkali metal silicates
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/08—Anti-corrosive paints
    • C09D5/10—Anti-corrosive paints containing metal dust
    • C09D5/103—Anti-corrosive paints containing metal dust containing Al
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/02—Elements
    • C08K3/08—Metals
    • C08K2003/0812—Aluminium
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/221—Oxides; Hydroxides of metals of rare earth metal

Abstract

The invention discloses the raising preformed shunt bar of aerial condutor or the erosion-resisting method of connecting strip, aluminium powder and rare earth oxide is added into sodium silicate aqueous solution and form slurry after being well mixed, slurry is coated in the surface on the preformed shunt bar of aerial condutor or connecting strip again, then the preformed shunt bar of aerial condutor or connecting strip for coating being finished are dried treatment, by the preformed shunt bar of aerial condutor or connecting strip after dried process in the atmosphere of inert gas and water vapor mixture body at 550~750 DEG C be incubated 24~36 hours, the powder of the preformed shunt bar of aerial condutor or connecting strip surface attachment is cleared up after cooling；Wherein, the aluminium powder and rare earth oxide mass ratio are 0.8~30:60~99.8.Present invention process is simple, and the preformed shunt bar or connecting strip of preparation are with low cost, practical, long service life, corrosion resistance ability are strong etc..

Description

Improve the preformed shunt bar of aerial condutor or the erosion-resisting method of connecting strip
Technical field
The present invention relates to improve the preformed shunt bar of aerial condutor or the erosion-resisting method of connecting strip.
Background technology
In the heavy corrosion such as high humidity, acid rain environment area, atmosphere environment corrosion is cause aerial condutor initial failure main One of form.High concentration salinity, sour gas, dust etc. present in air easily cause erosion to aerial condutor and wire clamp, drop The overall stretching resistance of low wire, while causing wire effectively to transmit electricity a certain degree of reduction in section, even occur when serious aluminum steel, Steel core it is stranded, broken string phenomenon and be forced interruption maintenance replacing.Counted according to operation power divisional divisionalized data, longtime running is in heavy corrosion Wire actual life under environment can be reduced to less than even 5 years 10 years, and the safe operation to transmission line of electricity is proposed sternly Challenge again.
The environmental corrosion behavior of aerial condutor and guard technology are both the study hotspot of current overhead power transmission technology, are also urgently One of key technical problem that must be solved.Steel core wire as wire main supporting part, its corrosion is that wire and wire clamp line lose The major reason of effect.For the heavy corrosion environment such as China coast, Acid Rain Zone, heavily contaminated industrial area area, using dip galvanized Traditional anti-corrosion means of steel core wire cannot increasingly meet the requirement of aerial condutor corrosion protection.In order to improve, active service is built on stilts to be led The corrosion resistance of line and wire clamp, the service life of extension lead product, in the urgent need to being upgraded and being optimized with aseptic technic to existing, The wire and wire clamp product of novel oxidation-resistant corrosion are developed, the corrosion protection O＆M cost of transmission line of electricity is reduced, power network is ensured Safe and stable operation.
The content of the invention
In order to overcome the defect of prior art, an object of the present invention to be to provide the raising preformed shunt bar of aerial condutor Or the erosion-resisting method of connecting strip.Present invention process is simple, and the preformed shunt bar or connecting strip of preparation are with low cost, practicality By force, long service life, corrosion resistance ability are strong etc..
To achieve these goals, the preparation scheme of raising method of the invention is：
Improve the preformed shunt bar of aerial condutor or the erosion-resisting method of connecting strip, by aluminium powder and rare earth oxide add to Slurry is formed after being well mixed in sodium silicate aqueous solution, then slurry is coated on the preformed shunt bar of aerial condutor or connecting strip Surface, then will coat the preformed shunt bar of aerial condutor that finishes or connecting strip will be dried treatment, after dried process The preformed shunt bar of aerial condutor or connecting strip in the atmosphere of inert gas and water vapor mixture body in 550~750 DEG C Lower insulation 24~36 hours, clears up the powder of the preformed shunt bar of aerial condutor or connecting strip surface attachment after cooling；Wherein, institute It is 0.8~30 that aluminium powder is stated with rare earth oxide mass ratio:60~99.8.
Aluminium powder and rare earth oxide are coated in by the preformed shunt bar of aerial condutor or connecting strip by the inventive method Surface so that surface forms one layer of film with aluminium and rare earth oxide as main component, first, contains substantial amounts of rare earth in film Oxide, substantially increases the acid etch resistance energy of preformed shunt bar or connecting strip；Secondly, it is incubated 24- at 550~750 DEG C During 36 hours, the aluminium on water vapour and film surface forms the aluminum oxide of densification, fine and close aluminum oxide it is stable in properties, can Prevent oxide etch, moreover it is possible to resistance to acid attack to a certain extent；3rd, during aluminum oxide is formed more, with rare earth oxide shape Into composite oxides, the corrosion resistance of preformed shunt bar or connecting strip can be further enhanced.
Corrosion resistance the invention aims to improve preformed shunt bar or connecting strip, but due to preformed Shunt bar or connecting strip are required to carry out power transmission application for aerial condutor, but are improving preformed shunt bar or connecting strip The mechanical property and electric property of the preformed shunt bar of aerial condutor or connecting strip are also contemplated that while corrosion resistance.Institute So that, using aluminium powder and rare earth oxide as coating raw material, the aluminium powder and rare earth oxide for adding aforementioned proportion can for the present invention Reduce electric property influence of the rare earth oxide on preformed shunt bar or connecting strip, additionally it is possible to reduce the film layer of coating to preformed The Effect on Mechanical Properties of formula shunt bar or connecting strip.Simultaneously as generally there is larger wind-force in the air in height so that aerial condutor Preformed shunt bar or connecting strip are swung constantly due to ambient influnence in the air in height, and the present invention is using sodium silicate aqueous solution as gluing Knot agent, is prevented from the film layer rupture of the preformed shunt bar of aerial condutor or connecting strip caused by swing, so as to further carry strong The corrosion resistance of preformed shunt bar or connecting strip.
In order to reduce the corrosion protection O＆M cost of transmission line of electricity, the second object of the present invention is to provide a kind of high making somebody a mere figurehead and leads The preformed shunt bar of line or connecting strip.
To achieve these goals, the technical scheme is that：
A kind of preformed shunt bar of aerial condutor or connecting strip, the preformed shunt bar of aerial condutor is processed using the above method Or connecting strip.
The third object of the present invention is to provide a kind of preformed shunt bar of above-mentioned aerial condutor or connecting strip in transmission line of electricity The application of corrosion protection in operation maintenance.
Because the corrosion of transmission line of electricity is not whole corrosion of whole piece electric wire, but part transmission line of electricity corrodes, if right The whole piece circuit of partial corrosion safeguarded or changed, then waste substantial amounts of manpower and materials, is unfavorable for energy-conserving and environment-protective, by the present invention The preformed shunt bar of aerial condutor or connecting strip for the treatment of are applied in the corrosion protection of transmission line of electricity, it is only necessary to erodable section Transmission line of electricity safeguarded, greatly reduce the corrosion protection O＆M cost of transmission line of electricity, ensure that the safety of power network is steady Fixed operation.
Beneficial effects of the present invention are：
1. there is excellent antioxidant anticorrosive using the preformed shunt bar of aerial condutor and connecting strip of present invention treatment Can, this kind of material oxidation rate in use can be significantly decreased.It is surface treated under equal experiment condition Sample oxidation increases weight less than the 1/100 of blank sample, while surface-modified sample surfaces do not find the defects such as face crack.
2. the present invention processes the preformed shunt bar of aerial condutor and connecting strip containing lucium, through high-temperature water vapor and lazy Property gas mixed gas treatment, that is, formed be rich in aluminium and rare earth oxide surface.Preparation process is simple, without entering in a vacuum OK, it is and with low cost.
3. the solid powder that surface removes remained on surface is cleaned after sample pretreatment with distilled water, and sample surfaces treatment does not change Become sample surface roughness.
4. coated technique of the invention is simple, can brush, dip-coating can also mechanically spraying mode.
5. by the present invention treatment preformed shunt bar and connecting strip mechanical property (yield strength, tensile strength and Elongation percentage) and electric property (adapting electric voltage, temperature rise and grip) meet the index request of existing standard.
Brief description of the drawings
The Figure of description for constituting the part of the application is used for providing further understanding of the present application, and the application's shows Meaning property embodiment and its illustrated for explaining the application, does not constitute the improper restriction to the application.
Fig. 1 is connecting strip sample surface morphology figure prepared by embodiment 6；
Fig. 2 is antioxygenic property curve of the connecting strip sample of the preparation of embodiment 6 in different pH value.
Specific embodiment
It is noted that described further below is all exemplary, it is intended to provide further instruction to the application.Unless another Indicate, all technologies used herein and scientific terminology are with usual with the application person of an ordinary skill in the technical field The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative Be also intended to include plural form, additionally, it should be understood that, when in this manual use term "comprising" and/or " bag Include " when, it indicates existing characteristics, step, operation, device, component and/or combinations thereof.
Heretofore described preformed shunt bar is a kind of preformed wire, is mainly used in repairing, reinforcement, reinforcing and leads Line.
Heretofore described connecting strip is, for fixing wire, to bear wire tension, and wire to be hung to strain insulator-string Gold utensil in group or shaft tower.
Heretofore described preformed shunt bar and the use environment of connecting strip are：Temperature -40 DEG C~120 DEG C, water The content of steam is 5~99% (percents by volume).
As background technology is introduced, exist in the prior art using traditional anti-corrosion means of dip galvanized steel core wire The deficiency of aerial condutor corrosion protection requirement cannot be met, in order to solve technical problem as above, present applicant proposes raising frame The preformed shunt bar of hollow wire or the erosion-resisting method of connecting strip.
It is of the invention a kind of typical embodiment there is provided the raising preformed shunt bar of aerial condutor or the anti-corruption of connecting strip The method of erosion, aluminium powder and rare earth oxide is added into sodium silicate aqueous solution and form slurry after being well mixed, then slurry is applied The surface on the preformed shunt bar of aerial condutor or connecting strip is overlayed on, the preformed shunt bar of aerial condutor for finishing then will be coated Or connecting strip is dried treatment, by the preformed shunt bar of aerial condutor or connecting strip after dried process in inert gas and water In being incubated 24~36 hours at 550~750 DEG C in the atmosphere of steam gas, the preformed shunting of aerial condutor is cleared up after cooling The powder of bar or connecting strip surface attachment；Wherein, the aluminium powder and rare earth oxide mass ratio are 0.8~30:60~99.8.
Aluminium powder and rare earth oxide are coated in by the preformed shunt bar of aerial condutor by present embodiment method or are continued The surface of bar so that surface forms one layer of film with aluminium and rare earth oxide as main component, first, containing substantial amounts of in film Rare earth oxide, substantially increases the acid etch resistance energy of preformed shunt bar or connecting strip；Secondly, it is incubated at 550~750 DEG C During 24-36 hours, the aluminium on water vapour and film surface forms the aluminum oxide of densification, fine and close aluminum oxide it is stable in properties, Oxide etch can be prevented, moreover it is possible to resistance to acid attack to a certain extent；3rd, during aluminum oxide is formed more, with rare-earth oxidation Thing forms composite oxides, can further enhance the corrosion resistance of preformed shunt bar or connecting strip.
The purpose of present embodiment be in order to improve the corrosion resistance of preformed shunt bar or connecting strip, but due to pre- Strand formula shunt bar or connecting strip are required to carry out power transmission application for aerial condutor, but are improving preformed shunt bar or continuing The mechanical property and electric property of the preformed shunt bar of aerial condutor or connecting strip are also contemplated that while the corrosion resistance of bar. So, present embodiment, as coating raw material, adds the aluminium powder and rare-earth oxidation of aforementioned proportion using aluminium powder and rare earth oxide Thing can reduce electric property influence of the rare earth oxide on preformed shunt bar or connecting strip, additionally it is possible to reduce the film layer of coating To preformed shunt bar or the Effect on Mechanical Properties of connecting strip.Simultaneously as generally there is larger wind-force in the air in height so that frame The preformed shunt bar of hollow wire or connecting strip are swung constantly due to ambient influnence in the air in height, and present embodiment is with sodium metasilicate water Solution is prevented from the film layer rupture of the preformed shunt bar of aerial condutor or connecting strip caused by swing as binding agent, so that Further carry the corrosion resistance of strong preformed shunt bar or connecting strip.
Sodium metasilicate is commonly called as sodium silicate also known as sodium silicate, is bound up by the sodium oxide molybdena and silica of different proportion Silicate, wherein, the ratio of the molal quantity of silica and sodium oxide molybdena is the modulus of sodium silicate, and the density of sodium silicate is got over Greatly, modulus is higher, then the viscosity of sodium silicate is bigger, and setting rate is faster, the cohesion after hardening and intensity, heat resistance with it is resistance to It is acid higher.But the concentration and modulus of sodium silicate are too high, then viscosity is unfavorable for greatly very much coating operation, it is difficult to ensure coating matter Amount, while modulus is too high, sodium silicate is insoluble in water, so, present embodiment is preferred, the modulus of the sodium silicate aqueous solution It is 2.5~2.8, density is 1.1~1.5g/cm3。
In order to ensure that aluminium powder and rare earth oxide can be uniformly dispersed, while make coating operation simple and easy to apply, this embodiment party Formula is preferred, and the solid constituent and sodium silicate aqueous solution of aluminium powder and the rare earth oxide composition in slurry are according to every 100g solids group Point：15~65mL sodium silicate aqueous solution proportions.
Present embodiment is preferred, rare earth oxide purity >=99.00%, granularity≤30 micron；Aluminium powder purity >= 99.00%th, granularity≤0.4 millimeter.
Preferably, the rare earth oxide is Y2O3Or La2O3。
Preferably, the mode of slurry coating is manual brushing or mechanically spraying.
In order that aluminium powder and rare earth oxide are preferably attached to the surface of preformed shunt bar or connecting strip, this embodiment party Formula is preferred, and the step of the drying is that will coat 20~35 DEG C of the preformed shunt bar of aerial condutor or connecting strip after finishing Heat-treatment furnace in dry 2~4 hours, then at 70~100 DEG C dry 1~4 hour.
In order to ensure for the aluminium powder on coat film surface to be fully converted to aluminum oxide, the acidproof salt resistant character of coat film is improved, Present embodiment is preferred, and inert gas content is 60~95%, water by volume in inert gas and water vapor mixture body Steam content is 5~40%.
Preferably, the inert gas be argon gas, helium in one or two.
It is further preferred that purity >=99.99% of the argon gas, purity >=99.99% of the helium.
Present embodiment additionally provides a kind of preformed shunt bar of aerial condutor or connecting strip, and frame is processed using the above method The preformed shunt bar of hollow wire or connecting strip.
Present embodiment additionally provides a kind of preformed shunt bar of above-mentioned aerial condutor or connecting strip and is run in transmission line of electricity The application of corrosion protection in maintenance.
Because the corrosion of transmission line of electricity is not whole corrosion of whole piece electric wire, but part transmission line of electricity corrodes, if right The whole piece circuit of partial corrosion safeguarded or changed, then waste substantial amounts of manpower and materials, is unfavorable for energy-conserving and environment-protective, and this is implemented The preformed shunt bar of aerial condutor or connecting strip that mode is processed are applied in the corrosion protection of transmission line of electricity, it is only necessary to corrosion Partial transmission line of electricity safeguarded, greatly reduces the corrosion protection O＆M cost of transmission line of electricity, ensures the peace of power network Full stable operation.
In order that obtaining those skilled in the art can clearly understand the technical scheme of the application, below with reference to tool The embodiment of body describes the technical scheme of the application in detail with comparative example.
Embodiment 1
1) slurry is prepared, is by weight percentage 0.8% aluminium powder and 99.2% Y by 100g2O3Middle 20mL adds modulus For 2.5, density is 1.2g/cm3Sodium silicate aqueous solution, stir and be prepared into slurry；
2) by step 1) the slurry manual brushing for preparing is in the preformed connecting strip suitable for wire LGJ300/40；
3) dry, by step 2) in the preformed shunt bar that finishes of manual brushing that 4 are dried in 20 DEG C of heat-treatment furnace is small When, then dried 3 hours at 80 DEG C；
4) by step 3) in dried preformed shunt bar in the atmosphere furnace of argon gas and water vapor mixture body is filled with In insulation 36 hours at 550 DEG C；Then atmosphere furnace power-off, preformed shunt bar naturally cools to room temperature in the stove；
5) preformed connecting strip surface attachment powder is removed, is obtained final product.
Wherein, in the atmosphere of argon gas and water vapor mixture body, the volume ratio of argon gas and water vapour is 60:40, Y2O3Purity >=99.00%, granularity≤30 micron；Aluminium powder purity >=99.00%, granularity≤0.4 millimeter.
Embodiment 2
1) slurry is prepared, is by weight percentage 10% aluminium powder and 90% La by 100g2O3Middle addition 30mL moduluses are 2.7th, density is 1.4g/cm3Sodium silicate aqueous solution, stir and be prepared into slurry；
2) by step 1) the slurry mechanically spraying for preparing is in the preformed shunt bar suitable for wire LGJ400/35；
3) dry, by step 2) in the preformed shunt bar that finishes of mechanically spraying that 3 are dried in 30 DEG C of heat-treatment furnace is small When, then dried 2 hours at 90 DEG C；
4) by step 3) in dried preformed shunt bar in the atmosphere furnace of helium and water vapor mixture body is filled with In insulation 30 hours at 700 DEG C；Then atmosphere furnace power-off, preformed shunt bar naturally cools to room temperature in the stove；
5) preformed shunt bar surface attachment powder is removed, is obtained final product.
Wherein, in the atmosphere of inert gas and water vapor mixture body, the volume ratio of helium and water vapour is 70:30, La2O3Purity >=99.00%, granularity≤30 micron；Aluminium powder purity >=99.00%, granularity≤0.4 millimeter.
Embodiment 3
1) slurry is prepared, is by weight percentage 20% aluminium powder and 80% Y by 100g2O3Middle addition 50mL moduluses are 2.6th, density is 1.1g/cm3Sodium silicate aqueous solution, stir and be prepared into slurry；
2) by step 1) the slurry manual brushing for preparing is in the preformed connecting strip suitable for wire LGJ300/40；
3) dry, by step 2) in the preformed shunt bar that finishes of manual brushing that 2 are dried in 35 DEG C of heat-treatment furnace is small When, then dried 4 hours at 70 DEG C；
4) by step 3) in dried preformed shunt bar in the atmosphere furnace of argon gas and water vapor mixture body is filled with In insulation 28 hours at 600 DEG C；Then atmosphere furnace power-off, preformed shunt bar naturally cools to room temperature in the stove；
5) preformed connecting strip surface attachment powder is removed, is obtained final product.
Wherein, in the atmosphere of inert gas and water vapor mixture body, the volume ratio of argon gas and water vapour is 80:20, Y2O3 Purity >=99.00%, granularity≤30 micron；Aluminium powder purity >=99.00%, granularity≤0.4 millimeter.
Embodiment 4
1) slurry is prepared, is by weight percentage 30% aluminium powder and 70% La by 100g2O3Middle addition 15mL moduluses are 2.5th, density is 1.5g/cm3Sodium silicate aqueous solution, stir and be prepared into slurry；
2) by step 1) the slurry mechanically spraying for preparing is in the preformed shunt bar suitable for wire LGJ400/35；
3) dry, by step 2) in the preformed shunt bar that finishes of mechanically spraying that 3 are dried in 25 DEG C of heat-treatment furnace is small When, then dried 1 hour at 100 DEG C；
4) by step 3) in dried preformed shunt bar in the atmosphere furnace of helium and water vapor mixture body is filled with In insulation 24 hours at 750 DEG C；Then atmosphere furnace power-off, preformed shunt bar naturally cools to room temperature in the stove；
5) preformed shunt bar surface attachment powder is removed, is obtained final product.
Wherein, in the atmosphere of inert gas and water vapor mixture body, the volume ratio of helium and water vapour is 90:10, La2O3Purity >=99.00%, granularity≤30 micron；Aluminium powder purity >=99.00%, granularity≤0.4 millimeter.
Embodiment 5
1) slurry is prepared, is by weight percentage 15% aluminium powder and 85% Y by 100g2O3Middle addition 65mL moduluses are 2.5th, density is 1.1g/cm3Sodium silicate aqueous solution, stir and be prepared into slurry；
2) by step 1) the slurry mechanically spraying for preparing is in the preformed shunt bar suitable for wire LGJ300/40；
3) dry, by step 2) in the preformed shunt bar that finishes of mechanically spraying that 3 are dried in 25 DEG C of heat-treatment furnace is small When, then dried 3 hours at 90 DEG C；
4) by step 3) in dried preformed shunt bar in the atmosphere furnace of argon gas and water vapor mixture body is filled with In insulation 36 hours at 650 DEG C；Then atmosphere furnace power-off, preformed shunt bar naturally cools to room temperature in the stove；
5) preformed shunt bar surface attachment powder is removed, is obtained final product.
Wherein, in the atmosphere of inert gas and water vapor mixture body, the volume ratio of argon gas and water vapour is 95:5, Y2O3 Purity >=99.00%, granularity≤30 micron；Aluminium powder purity >=99.00%, granularity≤0.4 millimeter.
Embodiment 6
1) slurry is prepared, is by weight percentage 0.8% aluminium powder and 99.2% Y by 100g2O3Middle 20mL adds modulus For 2.5, density is 1.2g/cm3Sodium silicate aqueous solution, stir and be prepared into slurry；
2) by step 1) the slurry manual brushing for preparing is in the preformed wire-connection suitable for wire LGJ300/40 Bar；
3) dry, by step 2) in the preformed wire-connection bar that finishes of manual brushing dried in 20 DEG C of heat-treatment furnace 4 hours, then dried 3 hours at 80 DEG C；
4) by step 3) in dried preformed wire-connection bar be filled with the atmosphere of argon gas and water vapor mixture body In insulation 36 hours at 550 DEG C in stove；Then atmosphere furnace power-off, preformed wire-connection bar naturally cools to room in the stove Temperature；
5) preformed wire-connection bar surface attachment powder is removed, is obtained final product.
Wherein, in the atmosphere of argon gas and water vapor mixture body, the volume ratio of argon gas and water vapour is 60:40, Y2O3Purity >=99.00%, granularity≤30 micron；Aluminium powder purity >=99.00%, granularity≤0.4 millimeter.
The surface topography of the preformed wire-connection bar for preparing is as shown in Figure 1.
It is as follows that preformed wire-connection bar to preparing carries out anticorrosive experiment：
The preformed wire-connection bar obtained to the present embodiment spray different pH solution (because the pH of acid rain is less than 5, because And the pH for simulating spray solution is respectively 4,4.5 and 5), the preformed of solution that different pH are sprayed under different time is then detected The mass change amount of wire-connection bar, its testing result is as shown in Figure 2.By Fig. 2, it is apparent that being processed by the present embodiment Connecting strip there is no an obvious mass change, and undressed connecting strip growth over time, its mass change amount is increasing Greatly, show that the connecting strip for obtaining is processed by the present embodiment has the performance of obvious anticorrosive oxidation.
Embodiment 7
1) slurry is prepared, is by weight percentage 10% aluminium powder and 90% La by 100g2O3Middle addition 30mL moduluses are 2.7th, density is 1.4g/cm3Sodium silicate aqueous solution, stir and be prepared into slurry；
2) by step 1) the slurry mechanically spraying for preparing is in the preformed wire-connection suitable for wire LGJ300/50 Bar；
3) dry, by step 2) in the preformed wire-connection bar that finishes of mechanically spraying dried in 30 DEG C of heat-treatment furnace 3 hours, then dried 2 hours at 90 DEG C；
4) by step 3) in dried preformed wire-connection bar be filled with the atmosphere of helium and water vapor mixture body In insulation 30 hours at 700 DEG C in stove；Then atmosphere furnace power-off, preformed wire-connection bar naturally cools to room in the stove Temperature；
5) preformed wire-connection bar surface attachment powder is removed, is obtained final product.
Wherein, in the atmosphere of inert gas and water vapor mixture body, the volume ratio of helium and water vapour is 70:30, La2O3Purity >=99.00%, granularity≤30 micron；Aluminium powder purity >=99.00%, granularity≤0.4 millimeter.
Embodiment 8
1) slurry is prepared, is by weight percentage 20% aluminium powder and 80% Y by 100g2O3Middle addition 50mL moduluses are 2.6th, density is 1.1g/cm3Sodium silicate aqueous solution, stir and be prepared into slurry；
2) by step 1) the slurry manual brushing for preparing is in the preformed wire-connection suitable for wire LGJ300/40 Bar；
3) dry, by step 2) in the preformed wire-connection bar that finishes of manual brushing dried in 35 DEG C of heat-treatment furnace 2 hours, then dried 4 hours at 70 DEG C；
4) by step 3) in dried preformed wire-connection bar be filled with the atmosphere of argon gas and water vapor mixture body In insulation 28 hours at 600 DEG C in stove；Then atmosphere furnace power-off, preformed wire-connection bar naturally cools to room in the stove Temperature；
5) preformed wire-connection bar surface attachment powder is removed, is obtained final product.
Wherein, in the atmosphere of inert gas and water vapor mixture body, the volume ratio of argon gas and water vapour is 80:20, Y2O3 Purity >=99.00%, granularity≤30 micron；Aluminium powder purity >=99.00%, granularity≤0.4 millimeter.
Embodiment 9
1) slurry is prepared, is by weight percentage 30% aluminium powder and 70% La by 100g2O3Middle addition 15mL moduluses are 2.5th, density is 1.5g/cm3Sodium silicate aqueous solution, stir and be prepared into slurry；
2) by step 1) the slurry mechanically spraying for preparing is in the preformed wire-connection suitable for wire LGJ300/50 Bar；
3) dry, by step 2) in the preformed wire-connection bar that finishes of mechanically spraying dried in 25 DEG C of heat-treatment furnace 3 hours, then dried 1 hour at 100 DEG C；
4) by step 3) in dried preformed wire-connection bar be filled with the atmosphere of helium and water vapor mixture body In insulation 24 hours at 750 DEG C in stove；Then atmosphere furnace power-off, preformed wire-connection bar naturally cools to room in the stove Temperature；
5) preformed wire-connection bar surface attachment powder is removed, is obtained final product.
Wherein, in the atmosphere of inert gas and water vapor mixture body, the volume ratio of helium and water vapour is 90:10, La2O3Purity >=99.00%, granularity≤30 micron；Aluminium powder purity >=99.00%, granularity≤0.4 millimeter.
Embodiment 10
1) slurry is prepared, is by weight percentage 15% aluminium powder and 85% Y by 100g2O3Middle addition 65mL moduluses are 2.5th, density is 1.1g/cm3Sodium silicate aqueous solution, stir and be prepared into slurry；
2) by step 1) the slurry mechanically spraying for preparing is in the preformed wire-connection suitable for wire LGJ300/40 Bar；
3) dry, by step 2) in the preformed wire-connection bar that finishes of mechanically spraying dried in 25 DEG C of heat-treatment furnace 3 hours, then dried 3 hours at 90 DEG C；
4) by step 3) in dried preformed wire-connection bar be filled with the atmosphere of argon gas and water vapor mixture body In insulation 36 hours at 650 DEG C in stove；Then atmosphere furnace power-off, preformed wire-connection bar naturally cools to room in the stove Temperature；
5) preformed wire-connection bar surface attachment powder is removed, is obtained final product.
Wherein, in the atmosphere of inert gas and water vapor mixture body, the volume ratio of argon gas and water vapour is 95:5, Y2O3 Purity >=99.00%, granularity≤30 micron；Aluminium powder purity >=99.00%, granularity≤0.4 millimeter.
The shunt bar processed embodiment 1~5 using the detection method of embodiment 6 and the connecting strip of 7~10 treatment are carried out Detection, its result shows that the shunt bar of the treatment of embodiment 1~5 and the connecting strip of 7~10 treatment have preferable anticorrosive oxidation Performance.
Although above-mentioned be described with reference to accompanying drawing to specific embodiment of the invention, not to invention protection domain Limitation, one of ordinary skill in the art should be understood that on the basis of technical scheme those skilled in the art are not required to The various modifications or deformation made by paying creative work are still within the scope of the present invention.

Claims (10)

1. the preformed shunt bar of aerial condutor or the erosion-resisting method of connecting strip are improved, it is characterized in that, by aluminium powder and rare-earth oxidation Thing add into sodium silicate aqueous solution it is well mixed after form slurry, then by slurry be coated in the preformed shunt bar of aerial condutor or Surface on connecting strip, the preformed shunt bar of aerial condutor or connecting strip for then finishing coating is dried treatment, will be dry The preformed shunt bar of aerial condutor or connecting strip after dry treatment are in the atmosphere of inert gas and water vapor mixture body in 550 24~36 hours are incubated at~750 DEG C, the powder of the preformed shunt bar of aerial condutor or connecting strip surface attachment is cleared up after cooling； Wherein, the aluminium powder and rare earth oxide mass ratio are 0.8~30:60~99.8.
2. the method for claim 1, it is characterized in that, the modulus of the sodium silicate aqueous solution is 2.5~2.8, and density is 1.1~1.5g/cm3。
3. the method for claim 1, it is characterized in that, the solid constituent of aluminium powder and the rare earth oxide composition in slurry with Sodium silicate aqueous solution is according to every 100g solid constituents：15~65mL sodium silicate aqueous solution proportions.
4. the method for claim 1, it is characterized in that, the rare earth oxide is Y2O3Or La2O3。
5. the method for claim 1, it is characterized in that, the step of the drying is that will coat the aerial condutor after finishing In the heat-treatment furnace of 20~35 DEG C of preformed shunt bar or connecting strip dry 2~4 hours, then at 70~100 DEG C dry 1~ 4 hours.
6. the method for claim 1, it is characterized in that, indifferent gas by volume in inert gas and water vapor mixture body Body content is 60~95%, and vapour content is 5~40%.
7. the method for claim 1, it is characterized in that, the inert gas is one or two in argon gas, helium.
8. method as claimed in claim 7, it is characterized in that, purity >=99.99% of the argon gas, the purity of the helium >= 99.99%.
9. a kind of preformed shunt bar of aerial condutor or connecting strip, it is characterized in that, using any described side of claim 1~8 Method processes the preformed shunt bar of aerial condutor or connecting strip.
10. a kind of preformed shunt bar of aerial condutor as claimed in claim 9 or connecting strip are in transmission line of electricity operation maintenance The application of corrosion protection.
CN201710237064.7A 2017-04-12 2017-04-12 Improve the preformed shunt bar of aerial condutor or the erosion-resisting method of connecting strip Pending CN106903031A (en)

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Citations (2)

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Publication number Priority date Publication date Assignee Title
CN101775599A (en) * 2010-02-22 2010-07-14 山东电力研究院 Pretreatment method for improving oxidation resistance of T91/P91 steel in high temperature water steam
CN105803370A (en) * 2016-03-23 2016-07-27 全球能源互联网研究院 Steel core line anti-corrosion alloy coating and preparing method thereof

Patent Citations (2)

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Publication number Priority date Publication date Assignee Title
CN101775599A (en) * 2010-02-22 2010-07-14 山东电力研究院 Pretreatment method for improving oxidation resistance of T91/P91 steel in high temperature water steam
CN105803370A (en) * 2016-03-23 2016-07-27 全球能源互联网研究院 Steel core line anti-corrosion alloy coating and preparing method thereof

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