CN108456841A - A kind of alumetized steel electric power pylon earthing or grounding means manufacturing process - Google Patents
A kind of alumetized steel electric power pylon earthing or grounding means manufacturing process Download PDFInfo
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- CN108456841A CN108456841A CN201710097601.2A CN201710097601A CN108456841A CN 108456841 A CN108456841 A CN 108456841A CN 201710097601 A CN201710097601 A CN 201710097601A CN 108456841 A CN108456841 A CN 108456841A
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- earthing
- grounding means
- electric power
- power pylon
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C10/00—Solid state diffusion of only metal elements or silicon into metallic material surfaces
- C23C10/18—Solid state diffusion of only metal elements or silicon into metallic material surfaces using liquids, e.g. salt baths, liquid suspensions
- C23C10/20—Solid state diffusion of only metal elements or silicon into metallic material surfaces using liquids, e.g. salt baths, liquid suspensions only one element being diffused
- C23C10/22—Metal melt containing the element to be diffused
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C10/00—Solid state diffusion of only metal elements or silicon into metallic material surfaces
- C23C10/02—Pretreatment of the material to be coated
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- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Prevention Of Electric Corrosion (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
It the invention discloses a kind of alumetized steel electric power pylon earthing or grounding means manufacturing process, solves the problems, such as perishable coarse with product surface present in electric power pylon earthing or grounding means application process, belongs to converting electricity field.The present invention include heating oil removing, acid pickling and rust removing and wash, activate with Passivation Treatment, heating, drying, quick hot-dip aluminizing processing with grouping electric welding and etc., effectively remove the oil stain of workpiece surface, prevent material surface formed leak ooze defect.The present invention improves the quality of coating of workpiece, reinforces the Corrosion Protection of earthing or grounding means.Hot aluminizing in the prior art and Diffusional aluminizing step are fused to quick hot-dip aluminizing and handle a step, significantly improves process efficiency, reduces operational sequence, while making workpiece aluminising outer wall more smooth.Meanwhile the present invention improves the mechanical property of earthing or grounding means, stable structure ensures the safety of technical process, especially suitable for the manufacture of electric power pylon earthing or grounding means, has higher economic value and preferable market application prospect.
Description
Technical field
The present invention relates to a kind of electric power pylon earthing or grounding means manufacturing process, especially a kind of alumetized steel electric power pylon ground connection dress
Manufacturing process is set, converting electricity field is belonged to.
Background technology
In the process of running, the incidence by the line fault of lightening hazard initiation is higher for overhead transmission line.Circuit meets with
The atmospheric over-voltage generated when lightning stroke can cause line facility and its insulation to be destroyed, and even result in the damage of substation equipment
It is bad.Electric power pylon earthing or grounding means is the core apparatus of electric wiring lightning protection, to ensureing that the safe and stable operation of electric system has
Important function.
In recent years, the adverse circumstances such as coastal area and heavy industry contaminated areas accelerate the corruption of transmission line of electricity and its device
Erosion, the accidents such as framework corrosion failure in a lot of shaft towers and substation, including electric power pylon earthing or grounding means occurred for the country.Except generation
Except exceedingly odious hazard weather causes, spillage of material, strength reduction are lead to accident direct caused by environmental corrosion
Reason.
Alumetized steel is a kind of efficient protection plating process materials, is corrosion-resistant steel material, high temperature resistant, wear-resistant field
Again important breakthrough, can effectively improve the corrosion resistance of device.Traditional alumetized steel method for manufacturing technique stream
Journey is complex, and main process includes oil removing, derusts, helps plating, five stages of hot aluminizing and Diffusional aluminizing., detailed process is as follows:
1. oil removing, degreaser is 20% NaOH, 5% Na2SO4, 10% Na2CO3With water, it is heated to 80-100 DEG C, steel
Part impregnates 2-30min；
2. derusting, the technical hydrochloric acid that rust remover is 36%, steel part impregnate 60-100min at room temperature；
3. helping plating, quickening liquid formula is：
The NaNO of 0.25-0.52, 0.075-0.5 Cr2O3, 0.01-0.02 K2MnO4With water.Room temperature lower steel piece is in quickening liquid
Middle immersion 3-10min, is rinsed with water after taking-up, and 1h is then dried at a temperature of 80-100 DEG C, is carried out preferably in 12h after drying
Lower road technique；
4. aluminium ingot is placed in crucible and is heated to 730-780 DEG C of fusing, then the steel part handled well is immersed in molten aluminum by hot aluminizing
5-10s；
5. Diffusional aluminizing, diffusion temperature is selected in AC3(free ferrite is completely reformed into the finishing temperature of austenite when referring to heating)
More than, carbon steel should select 950-1000 DEG C, keep the temperature 4-6h.Aluminum concentration in aluminized coating is gradually reduced inwards from steel outer surface.
For traditional alumetized steel method for manufacturing, technological temperature reaches 950-1000 DEG C, keeps the temperature 4-6h, technique stream
The journey time is longer, and the excessively high decline that can cause steel member matrix mechanical property of temperature cannot protect electric power pylon to be grounded well
Device.In addition, converting electricity field always using galvanizing by dipping as main preventive means early period, with cold-applied zinc or is brushed anti-
For rotten coating as later maintenance means, this is primarily due to hot dip galvanizing process can obtain thicker coating, plating with lower cost
The thickness of layer, toughness, surface state can control very well.However, at present in actual operation, the continuous aggravation of environmental corrosion is
Through causing substation's metal component service life and intensity insufficient, traditional galvanizing technique has been unable to meet electric power pylon earthing or grounding means
Service life in extreme marine atmosphere and the serious area of industrial pollution requires, therefore, it is necessary to using high-performance long-acting anti-corrosion side
Method improves the corrosion resistance of electric power pylon earthing or grounding means.
Invention content
The technical problem to be solved in the present invention is to provide a kind of electric power pylon earthing or grounding means manufacturing process, solve electric power pylon
The perishable and coarse problem of product surface present in earthing or grounding means application process.
In order to solve the above technical problem, the present invention provides a kind of alumetized steel electric power pylon earthing or grounding means manufacturing process,
Including following methods：
Workpiece is placed in air furnace and carries out heating oil removing；
Electric current acid pickling and rust removing is carried out to the workpiece after oil removing；
Workpiece after derusting is put into activating tank and carries out activation process, the workpiece after activation process is put into passivation pool and is carried out
Passivation Treatment；
Workpiece after Passivation Treatment is placed in air furnace and carries out heating, drying；
Workpiece after drying is put into molten aluminum and carries out quick hot-dip aluminizing processing：700 DEG C -720 DEG C of temperature of aluminum liquid is controlled, to work
Part heats 2-4 minutes；
Treated the workpiece grouping of quick hot-dip aluminizing is welded into the earthing or grounding means.
The heating deoiling method includes：400 DEG C -500 DEG C of air furnace furnace temperature is set, to workpiece heat 10-20 minutes, is waited for
It is taken out after workpiece surface oil-free.
The electric current acid pickling and rust removing method includes：The workpiece is put into sour pond, controls pickling electric current 30A-40A, control
Pickle concentration 5%-20% removes residual pickle after workpiece surface is without rusty stain with water.
The pickle is made of the hydrochloric acid of mass percent 2.2% and the sulfuric acid of mass percent 12%-14%.
The electric current acid pickling and rust removing method further includes：Sodium corrosion inhibiter is added in sour pond.
The activating treatment method includes：Activating tank is put the workpiece in submerge and activate 25-35 seconds；The Passivation Treatment side
Method includes：Workpiece after activation process is put into the passivation pool that passivating solution temperature is 15 DEG C -25 DEG C and is passivated 2-4 minutes.
The heating, drying method includes：250 DEG C -350 DEG C of air furnace furnace temperature is set, to workpiece heat 4-6 minutes, waits for work
It is taken out after part dry tack free.
The quick hot-dip aluminizing processing method includes：700 DEG C -720 DEG C of temperature of aluminum liquid is controlled, to workpiece heat 2-4 points
Clock.
After carrying out quick hot-dip aluminizing processing to the workpiece, workpiece end is purged by air knife, removes aluminium
Tumor.
The grouping welding method includes：It is welded by the way of electric welding；When the earthing pole round steel of the workpiece
When diameter is less than 0.002 m, welding current selects 25A-50A；As a diameter of 0.002 m-0.0025m, welding current
Select 50A-80A；As a diameter of 0.0025m-0.004m, welding current selects 80A-110A；When the diameter is more than
When 0.004m, welding current selects 110A-160A.
The material of the workpiece is Q235B.
The beneficial effects of the present invention are：By to workpiece heat oil removing, effectively removing the oil stain of workpiece surface；Pass through electricity
Stream pickling derusts to workpiece, prevents material surface from forming leakage and oozes defect.By activation process, the coating matter of workpiece is improved
Amount；By Passivation Treatment, reinforce workpiece（Earthing or grounding means）Corrosion Protection.By carrying out heating, drying processing to workpiece, prevent
The water stain molten aluminum that enters of workpiece surface only after Passivation Treatment is exploded.By hot aluminizing in the prior art and Diffusional aluminizing step
It is fused to quick hot-dip aluminizing and handles a step, significantly improve process efficiency, reduce operational sequence, reduce the process time, it is raw
The aluminising steel workpiece corrosion resistance that output is come is more preferable, while making workpiece aluminising outer wall more smooth.The present invention improves ground connection dress
Set Corrosion Protection, reduce workpiece surface roughness, while ensureing the safety of technical process, have higher economic value with compared with
Good market application prospect.
Description of the drawings
Fig. 1 is the process flow chart of the present invention.
Specific implementation mode
The invention will be further described in the following with reference to the drawings and specific embodiments, so that those skilled in the art can be with
It more fully understands the present invention and can be practiced, but illustrated embodiment is not as a limitation of the invention.
Aluminising work piece production should meet following technical standard：（1）The novel alumetized steels of Q/JTSYG001-2014；（2）GB/
T18592-2001 metal cladding steel product hot-dip aluminum plating technology conditions.
Q235 steel aluminized coating overall thickness is 60-140 μm, and ferroalloy parts combine for zigzag, alloy layer thickness 30-
100 μm, 30-40 μm of fine aluminium layer thickness can also form pellumina except aluminium layer.Certification is detected through third party, in same feelings
Under condition, the salt spray corrosion resistance of aluminising Q235 steel is far superior to the zinc-plated Q235 steel of 80 μm of zinc coat.
Embodiment 1：
The equipment of the present embodiment is by air furnace, sour pond, boom hoisting, spray pond, activating tank, air knife and welding tool.This implementation
The material of example has the aluminum alloy melt of Q235B equipment supporters workpiece, pickle, sodium corrosion inhibiter, passivating solution and addition rare earth, pickle
It is made of the hydrochloric acid of mass percent 2.2% and the sulfuric acid of mass percent 13%.Because equipment supporter flange is there are four screw hole, because
This directly hangs screw hole using stainless steel hook and carries out pretreatment and the processing of quick hot-dip aluminizing.
Referring to attached drawing 1, the course of work of the present embodiment is as follows：
Heat oil removing：Q235B equipment supporter workpiece are placed in air furnace, 450 DEG C of furnace temperature is set, heats 15 minutes, waits for workpiece
Surface is taken out when reaching no oil condition, and workpiece surface is in bois de rose at this time.
Acid pickling and rust removing is simultaneously washed：Sour pond is added in pickle, first plus hydrochloric acid after vulcanization is sour；Control pickling electric current 35A, control
Sodium corrosion inhibiter is added in pickle concentration 12% in sour pond.Sour pond is put the workpiece in by boom hoisting, emphasis detects workpiece method
The pickling effect of blue disk position and solder joint position, by boom hoisting with 20m/min's after workpiece surface is without rusty stain
Lifting speed is hoisted to rapidly spray pond and carries out washing spray：Workpiece is pulled to be soaked in spray pond up and down with the speed of 20m/min
Not twice, removal residual pickle.
Activation and Passivation Treatment：Workpiece activating tank is hung to 20m/min by boom hoisting to submerge and activate 30 seconds；It will
Workpiece after activation process is put into passivation 3 minutes in the passivation pool that passivating solution temperature is 20 DEG C.
Heating, drying：Workpiece is placed in air furnace, 300 DEG C of setting air furnace furnace temperature, to workpiece heat 5 minutes, waits for work
It is taken out after part dry tack free.
Quick hot-dip aluminizing processing：Put the workpiece in aluminum alloy melt, 715 DEG C of control aluminum alloy melt temperature, to workpiece plus
Heat 3 minutes.Workpiece end is purged by air knife, removes aluminium tumor.
It is welded into earthing or grounding means：By quick hot-dip aluminizing, treated that workpiece is welded by welding tool, uses
A312SL aluminising welding rod special for special.Judge the diameter of the earthing pole round steel of workpiece：When diameter is less than 0.002 m, welding current choosing
Select 40A；As a diameter of 0.002 m-0.0025m, welding current selects 65A；As a diameter of 0.0025m-0.004m, welding
Electric current selects 95A；When the diameter is more than 0.004m, welding current selects 140A.Earthing or grounding means is made by welding technology.
Sodium corrosion inhibiter is added in the present embodiment in sour pond, prevents workpiece excessive erosion.
Water-washing process is added in the present embodiment after acid pickling and rust removing, to remove the residual pickle of workpiece surface.
The present embodiment carries out activation process to workpiece, changes the surface state of matrix, improves the efficiency and anti-corrosion effect of aluminising
Fruit.
The present embodiment is passivated processing to workpiece, completely cuts off matrix and atmosphere, increases the effect of aluminising, be conducive to produce
The corrosivity and coating uniformity of product.
The quick hot-dip aluminizing of the present embodiment is handled so that workpiece aluminising outer wall is more smooth, and critical surfaces are manufactured without tumor is hung
The anti-corrosion overburden cover of fine aluminium of the earthing or grounding means gone out is more than 30 μm, ensures corrosion resistance, mechanical property and surface quality, reduces work
Skill time, the aluminising steel workpiece corrosion resistance produced are more preferable.
Workpiece surface is purged by air knife after the quick hot-dip aluminizing processing of the present embodiment, effectively removes aluminium tumor.
The welding process of the present embodiment is using grouping welding current method so that the connection of workpiece is more reliable, is stablized
Structure, process for refining, aluminising effect is more preferable.
The present embodiment uses A312SL aluminising welding rod special for special, has the corrosion resistance directly to match with alumetized steel and anti-height
Warm oxidisability.
Embodiment 2：
The equipment of the present embodiment is by air furnace, sour pond, boom hoisting, spray pond, activating tank, air knife and welding tool.This implementation
The material of example has the aluminum alloy melt of Q235B equipment supporters workpiece, pickle, sodium corrosion inhibiter, passivating solution and addition rare earth, pickle
It is made of the hydrochloric acid of mass percent 2.2% and the sulfuric acid of mass percent 14%.
Referring to attached drawing 1, the course of work of the present embodiment is as follows：
Heat oil removing：Q235B equipment supporter workpiece are placed in air furnace, 400 DEG C of furnace temperature is set, heats 20 minutes, waits for workpiece
Surface is taken out when reaching no oil condition, and workpiece surface is in bois de rose at this time.
Acid pickling and rust removing is simultaneously washed：Sour pond is added in pickle, first plus hydrochloric acid after vulcanization is sour；Control pickling electric current 30A, control
Sodium corrosion inhibiter is added in pickle concentration 20% in sour pond.Sour pond is put the workpiece in by boom hoisting, emphasis detects workpiece method
The pickling effect of blue disk position and solder joint position, by boom hoisting with 20m/min's after workpiece surface is without rusty stain
Lifting speed is hoisted to rapidly spray pond and carries out washing spray：Workpiece is pulled to be soaked in spray pond up and down with the speed of 20m/min
Not twice, removal residual pickle.
Activation and Passivation Treatment：Workpiece activating tank is hung to 20m/min by boom hoisting to submerge and activate 35 seconds；It will
Workpiece after activation process is put into passivation 4 minutes in the passivation pool that passivating solution temperature is 15 DEG C.
Heating, drying：Workpiece is placed in air furnace, 250 DEG C of setting air furnace furnace temperature, to workpiece heat 6 minutes, waits for work
It is taken out after part dry tack free.
Quick hot-dip aluminizing processing：Put the workpiece in aluminum alloy melt, 700 DEG C of control aluminum alloy melt temperature, to workpiece plus
Heat 4 minutes.Workpiece end is purged by air knife, removes aluminium tumor.
It is welded into earthing or grounding means：By quick hot-dip aluminizing, treated that workpiece is welded by welding tool, uses
A312SL aluminising welding rod special for special.Judge the diameter of the earthing pole round steel of workpiece：When diameter is less than 0.002 m, welding current choosing
Select 25A；As a diameter of 0.002 m-0.0025m, welding current selects 50A；As a diameter of 0.0025m-0.004m, welding
Electric current selects 80A；When the diameter is more than 0.004m, welding current selects 110A.Earthing or grounding means is made by welding technology.
2.1. welding rod should bake and bank up with earth 1 hour before use in 200-250 DEG C of drying box.
2.2. cleaning for bonding impurity uses DC welder, small current welding as possible.
Level weld seam requirement is smooth when 2.3. welding, and must not have the weld defects such as stomata slag inclusion, it is found that defect is repaired in time.Weldering
Seam height is generally close with steel plate, and when using discontinuous welding, uniformity is answered at fusion length and interval.
Require weld bead height that cannot be less than base material when 2.4. welding（Wlding）Thickness.The base material of different-thickness（Wlding）
In welding, weld bead height cannot be less than most thin base material（Weldment）Thickness.
2.5. adopting an effective measure, which prevents welding slag from splashing, damages material surface, as aluminising steel surface uses manual electric arc welding
When, gear tool is made using thin plate, prevents splash from polluting steel surface.
2.6. after the completion of welding, coating is knocked out again after needing to wait for cooling, can both protect weld seam in this way, can also
Protect aluminized coating.
When welding rod is welded, because welding aluminium layer is spread on a small quantity around weld seam（With paint or aluminium spray according to actual conditions
Processing）；According to material thickness difference, solder joint backing material aluminium layer can also be spread when being welded compared with thin pieces, also need to repair.Paint processing
When need first simply polish to processing surface, removing surface then carries out sealing of hole with anti-corrosive primer, finally sprays silvery white face
Paint.The processing of aluminium spray also needs first simply to polish to surface, removes surface, and aluminium spray need to be repaired at twice（It repaiies twice
Multiple time interval 5 minutes will add one layer of insulating paint of spraying in special circumstances）.
Embodiment 3：
The equipment of the present embodiment is by air furnace, sour pond, boom hoisting, spray pond, activating tank, air knife and welding tool.This implementation
The material of example has the aluminum alloy melt of Q235B equipment supporters workpiece, pickle, sodium corrosion inhibiter, passivating solution and addition rare earth, pickle
It is made of the hydrochloric acid of mass percent 2.2% and the sulfuric acid of mass percent 12%.
Referring to attached drawing 1, the course of work of the present embodiment is as follows：
Heat oil removing：Q235B equipment supporter workpiece are placed in air furnace, 500 DEG C of furnace temperature is set, heats 10 minutes, waits for workpiece
Surface is taken out when reaching no oil condition, and workpiece surface is in bois de rose at this time.
Acid pickling and rust removing is simultaneously washed：Sour pond is added in pickle, first plus hydrochloric acid after vulcanization is sour；Control pickling electric current 40A, control
Sodium corrosion inhibiter is added in pickle concentration 5% in sour pond.Sour pond is put the workpiece in by boom hoisting, emphasis detects workpiece flange
The pickling effect of disk position and solder joint position, by boom hoisting with of 20m/min after workpiece surface is without rusty stain
It hangs speed and is hoisted to spray pond rapidly and carry out washing spray：Workpiece is pulled to be submerged in spray pond up and down with the speed of 20m/min
Twice, removal residual pickle.
Activation and Passivation Treatment：Workpiece activating tank is hung to 20m/min by boom hoisting to submerge and activate 25 seconds；It will
Workpiece after activation process is put into passivation 2 minutes in the passivation pool that passivating solution temperature is 25 DEG C.
Heating, drying：Workpiece is placed in air furnace, 350 DEG C of setting air furnace furnace temperature, to workpiece heat 4 minutes, waits for work
It is taken out after part dry tack free.
Quick hot-dip aluminizing processing：Put the workpiece in aluminum alloy melt, 720 DEG C of control aluminum alloy melt temperature, to workpiece plus
Heat 2 minutes.Workpiece end is purged by air knife, removes aluminium tumor.
It is welded into earthing or grounding means：By quick hot-dip aluminizing, treated that workpiece is welded by welding tool, uses
A102 stainless steel electrodes.Judge the diameter of the earthing pole round steel of workpiece：When diameter is less than 0.002 m, welding current selection
50A；As a diameter of 0.002 m-0.0025m, welding current selects 80A；As a diameter of 0.0025m-0.004m, welding electricity
Stream selection 110A；When the diameter is more than 0.004m, welding current selects 160A.Earthing or grounding means is made by welding technology.
The present embodiment uses A102 stainless steel electrodes, welding performance to be higher than base metal of carbon steel, has anticorrosion and high temperature resistance oxygen
The property changed.
The present invention is by workpiece heat oil removing, effectively removing the oil stain of workpiece surface；By electric current pickling to workpiece into
Row derusting prevents material surface from forming leakage and oozes defect.By activation process, the quality of coating of workpiece is improved；By Passivation Treatment,
Reinforce workpiece（Earthing or grounding means）Corrosion Protection.By carrying out heating, drying processing to workpiece, the work after Passivation Treatment is prevented
Part surface is water stain to explode into molten aluminum.Hot aluminizing in the prior art is fused to quick hot dipping with Diffusional aluminizing step to ooze
Aluminium handles a step, significantly improves process efficiency, reduces operational sequence, while making workpiece aluminising outer wall more smooth.This hair
Bright raising earthing or grounding means Corrosion Protection reduces workpiece surface roughness, improves the mechanical property of earthing or grounding means, stable structure,
Ensure the safety of technical process simultaneously, especially suitable for the manufacture of electric power pylon earthing or grounding means, have higher economic value with
Preferable market application prospect.
Embodiment described above is only to absolutely prove preferred embodiment that is of the invention and being lifted, protection model of the invention
It encloses without being limited thereto.Those skilled in the art on the basis of the present invention made by equivalent substitute or transformation, in the present invention
Protection domain within.Protection scope of the present invention is subject to claims.
Claims (10)
1. a kind of alumetized steel electric power pylon earthing or grounding means manufacturing process, which is characterized in that including following methods：
Workpiece is placed in air furnace and carries out heating oil removing；
Electric current acid pickling and rust removing is carried out to the workpiece after oil removing；
Workpiece after derusting is put into activating tank and carries out activation process, the workpiece after activation process is put into passivation pool and is carried out
Passivation Treatment；
Workpiece after Passivation Treatment is placed in air furnace and carries out heating, drying；
Workpiece after drying is put into molten aluminum and carries out quick hot-dip aluminizing processing：700 DEG C -720 DEG C of temperature of aluminum liquid is controlled, to work
Part heats 2-4 minutes；
Treated the workpiece grouping of quick hot-dip aluminizing is welded into the earthing or grounding means.
2. alumetized steel electric power pylon earthing or grounding means manufacturing process according to claim 1, which is characterized in that the heating removes
Oily method includes：400 DEG C -500 DEG C of air furnace furnace temperature is set, to workpiece heat 10-20 minutes, is taken after workpiece surface oil-free
Go out.
3. alumetized steel electric power pylon earthing or grounding means manufacturing process according to claim 1, which is characterized in that the electric current acid
Washing derusting method includes：The workpiece is put into sour pond, controls pickling electric current 30A-40A, pickle concentration 5%-20% is controlled, waits for
Workpiece surface without after rusty stain with water remove residual pickle.
4. alumetized steel electric power pylon earthing or grounding means manufacturing process according to claim 3, which is characterized in that the pickle
It is made of the hydrochloric acid of mass percent 2.2% and the sulfuric acid of mass percent 12%-14%.
5. alumetized steel electric power pylon earthing or grounding means manufacturing process according to claim 4, which is characterized in that the electric current acid
Washing derusting method further includes：Sodium corrosion inhibiter is added in sour pond.
6. alumetized steel electric power pylon earthing or grounding means manufacturing process according to claim 1, which is characterized in that at the activation
Reason method includes：Activating tank is put the workpiece in submerge and activate 25-35 seconds；The deactivating process for the treatment of includes：By activation process
Workpiece afterwards is put into passivation 2-4 minutes in the passivation pool that passivating solution temperature is 15 DEG C -25 DEG C.
7. alumetized steel electric power pylon earthing or grounding means manufacturing process according to claim 1, which is characterized in that the heating is dried
Drying method includes：250 DEG C -350 DEG C of air furnace furnace temperature is set, to workpiece heat 4-6 minute, is taken out after workpiece surface is dried.
8. alumetized steel electric power pylon earthing or grounding means manufacturing process according to claim 1, which is characterized in that the work
After part carries out quick hot-dip aluminizing processing, workpiece end is purged by air knife, removes aluminium tumor.
9. alumetized steel electric power pylon earthing or grounding means manufacturing process according to claim 1, which is characterized in that the grouping weldering
The method of connecing includes：It is welded by the way of electric welding；When the diameter of the earthing pole round steel of the workpiece is less than 0.002 m,
Welding current selects 25A-50A；As a diameter of 0.002 m-0.0025m, welding current selects 50A-80A；When described
When a diameter of 0.0025m-0.004m, welding current selects 80A-110A；When the diameter is more than 0.004m, welding current choosing
Select 110A-160A.
10. according to alumetized steel electric power pylon earthing or grounding means manufacturing process described in any one of claim 1-9, feature exists
In the material of the workpiece is Q235B.
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Citations (1)
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|---|---|---|---|---|
| CN103320745A (en) * | 2013-07-08 | 2013-09-25 | 湖北交投四优钢科技有限公司 | Aluminized steel and preparation method thereof |
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|---|---|---|---|---|
| CN103320745A (en) * | 2013-07-08 | 2013-09-25 | 湖北交投四优钢科技有限公司 | Aluminized steel and preparation method thereof |
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Application publication date: 20180828 |