CN109234657A - A kind of surface treatment method of high-voltage power transmission tower - Google Patents
A kind of surface treatment method of high-voltage power transmission tower Download PDFInfo
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- CN109234657A CN109234657A CN201811400835.0A CN201811400835A CN109234657A CN 109234657 A CN109234657 A CN 109234657A CN 201811400835 A CN201811400835 A CN 201811400835A CN 109234657 A CN109234657 A CN 109234657A
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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
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
- C23C2/06—Zinc or cadmium or alloys based thereon
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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
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
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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
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/26—After-treatment
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- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
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- Organic Chemistry (AREA)
- Electroplating Methods And Accessories (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
The present invention is a kind of surface treatment method of high-voltage power transmission tower, and this method derusted the steel tower workpiece processed, galvanizing by dipping, forms fe-zn alloy layer and pure zinc layer from the inside to surface in workpiece surface；Its step includes feeding, acid pickling and rust removing, rinses, helps to cross and help coating depositing one layer to workpiece surface, then will be by helping the workpiece for crossing processing to immerse in zinc bath, in the process that workpiece surface forms zinc and zinc-iron alloy layer by galvanizing by dipping；Cooling post-passivation processing, then by the workpiece after Passivation Treatment carry out rinsing processing to get.Steel tower workpiece is handled by the method for the invention, keeps workpiece continuous whole, flat and smooth, the defects of no dust stratification and product zinc do not have cadmia on galvanized workpiece, basic member bubble, pimple, speckle.The antiseptic and rustproof effect of work is substantially increased, treated workpiece provides guarantee for the safe operation of steel tower.
Description
Technical field
The present invention relates to a kind for the treatment of preparation method thereof of steel tower, especially a kind of surface treatment side of high-voltage power transmission tower
Method.
Background technique
Electric power industry development initial stage, power plant are generally built near power consumer.With in power generation scale and load
The expansion of heart scale, transmission line capability is also increasing, and transmission voltage is with regard to higher and higher.
In China, power transmission network voltage class is generally divided into high pressure, super-pressure and extra-high voltage.High pressure refers to 110 kilovolts and 220,000
Volt；Super-pressure refers to 330 kilovolts, 500 kilovolts and 750 kilovolts；Extra-high voltage refers to 1000 kilovolts or more.The route of voltage levels needs
Safe distance that will be bigger, will be obtained very high by frame, and the only steel tower burden that could have the ability weighs tens of tons of route.Steel tower
Tower can be divided into wine glass-shaped tower, cathead tower, dry font steel tower, double loop drum type tower etc..In the manufacture of high-voltage power transmission tower
In the process, the surface treatment quality after workpiece shaping is directly related to the service life and transmission of electricity safety of high-voltage power transmission tower.Institute
With the process of surface treatment for researching and developing new high treating effect has great importance.
Summary of the invention
The technical problem to be solved by the present invention is in view of the deficiencies of the prior art, provide a kind of design of method rationally, can
Strong operability, greatly improve high-voltage power transmission tower anti-rust and corrosionproperties a kind of high-voltage power transmission tower surface treatment method.
The technical problem to be solved by the present invention is to what is realized by technical solution below.The present invention is a kind of high pressure
The surface treatment method of electric power pylon, its main feature is that, this method derusted the steel tower workpiece processed, galvanizing by dipping,
Workpiece surface forms fe-zn alloy layer and pure zinc layer from the inside to surface；The specific steps of which are as follows:
(1) feeding: the workpiece zinc-plated to need is hung；(2) acid pickling and rust removing: the workpiece of hanging is moved in pickling tube and is carried out
Acid pickling and rust removing, pickling use hydrochloric acid, and the working concentration of hydrochloric acid is 40-200 grams per liter pickling aqueous solution；The acid pickling and rust removing time is 20-
45 minutes；Pickling to workpiece surface is in silver gray, the smooth no dark brown patch in surface, spot, and attached without greasy dirt and other impurity
?；
(3) it rinses: workpiece after acid pickling and rust removing being moved into potcher and is rinsed through flowing water, pickling solution remained on surface is removed；Workpiece from
After potcher is hung out, stops above potcher to drop and remove surface area water；
(4) it helps and crosses: zinc amine of the workpiece immersion containing zinc chloride and/or ammonium chloride after rinsing is helped to cross carrying out helping plating in solution,
Help plating temperature be 50 DEG C -60 DEG C, help be plating to workpiece surface deposit one layer help coating；
(5) zinc-plated: galvanizing by dipping is will to form zinc by helping the workpiece for crossing processing to immerse in zinc bath in workpiece surface and zinc-iron closes
The process of layer gold；Zinc bath temperature is 430 DEG C -450 DEG C, and the zinc bath time is -12 minutes 50 seconds；Wait for that the heating of zinc liquid reaches when operation
After 430 DEG C -450 DEG C, then by workpiece immerse zinc liquid in galvanizing by dipping；Zinc-plated zinc used is zinc ingot metal and/or zinc-containing alloy；
(6) cooling: workpiece being immersed in cooling water immediately after zinc-plated and is cooled down, the temperature of cooling water is 20 DEG C ~ 50 DEG C；
Cooling time；It is 1 ~ 3 minute；(7) it is passivated: workpiece is immersed in passivating solution Passivation Treatment 10 ~ 60 seconds；Passivating solution is by containing
The sodium dichromate of mass concentration 0.4%-0.6%, 0.1% sulfuric acid aqueous solution, formed by Passivation Treatment on galvanized workpiece surface
One layer of passivating film；(8) rinse: by the workpiece after Passivation Treatment carry out rinsing processing to get.
A kind of surface treatment method of high-voltage power transmission tower of the present invention, further preferred technical solution is:
During acid pickling and rust removing, hydrochloric acid adds water to be configured to the acid that concentration is 40-200 grams per liter using technical hydrochloric acid more than 28% concentration
Aqueous solution；During acid pickling and rust removing, when the concentration of pickling aqueous solution is down to 40 grams per liters or less, frerrous chloride content rises to 200
When more than grams per liter, handled as spent acid；When the content of acid washing water Chlorine in Solutionization ferrous iron is less than 200 grams per liters, concentration of hydrochloric acid
When lower than 40 grams per liter, technical hydrochloric acid is added in right amount to pickling aqueous solution, continues to use.
A kind of surface treatment method of high-voltage power transmission tower of the present invention, further preferred technical solution is:
When the concentration of the hydrochloric acid in pickling aqueous solution is in 180-200 grams per liter, the acid pickling and rust removing time is 20-25 minutes；Concentration is in 150-
180 grams per liters, acid pickling and rust removing time are 25-30 minutes；For concentration in 100-150 grams per liter, the acid pickling and rust removing time is 30-40 minutes；
For concentration in 40-100 grams per liter, the acid pickling and rust removing time is 40-45 minutes.
A kind of surface treatment method of high-voltage power transmission tower of the present invention, further preferred technical solution is:
During acid pickling and rust removing, by vibration pickling 2-3 times above and below workpiece, and propose that liquid level checks acid pickling and rust removing quality；Part is owed
The surface of acid pickling and rust removing carries out acid pickling and rust removing after removing using grinding wheel, wire brush or other tools again.
A kind of surface treatment method of high-voltage power transmission tower of the present invention, further preferred technical solution is:
The time for helping plating is 1-2 minutes.
A kind of surface treatment method of high-voltage power transmission tower of the present invention, further preferred technical solution is:
Zinc bath temperature is 435 DEG C -445 DEG C.
A kind of surface treatment method of high-voltage power transmission tower of the present invention, further preferred technical solution is:
When zinc-plated, it is 100-400mm that workpiece surface, which immerses zinc liquid depth,.
A kind of surface treatment method of high-voltage power transmission tower of the present invention, further preferred technical solution is:
Before acid pickling and rust removing, ungrease treatment is carried out to workpiece, workpiece is attached to the paint, minerals, conjunction on surface in the fabrication process
Ungrease treatment is carried out at resin, pitch or other attachments；The method of processing includes that polishing or fire are roasting.
A kind of surface treatment method of high-voltage power transmission tower of the present invention, further preferred technical solution is:
It helps and crosses in solution, the content of zinc chloride or ammonium chloride is 80-150 grams per liter.
A kind of surface treatment method of high-voltage power transmission tower of the present invention, further preferred technical solution is:
Zinc-plated running hours, carry out fishing slag according to the actual situation, fish out and zinc liquid temperature is increased to 450 DEG C -460 DEG C before slag, to cadmia
Pull cadmia after sinking out.
Compared with prior art, the invention has the following advantages: by the method for the invention to steel tower workpiece at
Reason, form fe-zn alloy layer and pure zinc layer from the inside to surface in workpiece surface, keep workpiece continuous whole, flat and smooth, no dust stratification and
Product zinc, invariably recoverability thermal deformation do not have cadmia on galvanized workpiece, no injurous defect, basic first bubble on galvanized workpiece,
The defects of pimple, speckle.The antiseptic and rustproof effect of work is substantially increased, treated, and workpiece provides for the safe operation of steel tower
It ensures.
Specific embodiment
The specific technical solution of the present invention described further below, in order to which those skilled in the art is further understood that
The present invention, without constituting the limitation to its right.
Embodiment 1, a kind of surface treatment method of high-voltage power transmission tower, this method remove the steel tower workpiece processed
Rust, galvanizing by dipping, form fe-zn alloy layer and pure zinc layer in workpiece surface from the inside to surface；The specific steps of which are as follows:
(1) feeding: the workpiece zinc-plated to need is hung；(2) acid pickling and rust removing: the workpiece of hanging is moved in pickling tube and is carried out
Acid pickling and rust removing, pickling use hydrochloric acid, and the working concentration of hydrochloric acid is 40-200 grams per liter pickling aqueous solution；The acid pickling and rust removing time is 20-
45 minutes；Pickling to workpiece surface is in silver gray, the smooth no dark brown patch in surface, spot, and attached without greasy dirt and other impurity
?；
(3) it rinses: workpiece after acid pickling and rust removing being moved into potcher and is rinsed through flowing water, pickling solution remained on surface is removed；Workpiece from
After potcher is hung out, stops above potcher to drop and remove surface area water；
(4) it helps and crosses: zinc amine of the workpiece immersion containing zinc chloride and/or ammonium chloride after rinsing is helped to cross carrying out helping plating in solution,
Help plating temperature be 50 DEG C -60 DEG C, help be plating to workpiece surface deposit one layer help coating；
(5) zinc-plated: galvanizing by dipping is will to form zinc by helping the workpiece for crossing processing to immerse in zinc bath in workpiece surface and zinc-iron closes
The process of layer gold；Zinc bath temperature is 430 DEG C -450 DEG C, and the zinc bath time is -12 minutes 50 seconds；Wait for that the heating of zinc liquid reaches when operation
After 430 DEG C -450 DEG C, then by workpiece immerse zinc liquid in galvanizing by dipping；Zinc-plated zinc used is zinc ingot metal and/or zinc-containing alloy；
(6) cooling: workpiece being immersed in cooling water immediately after zinc-plated and is cooled down, the temperature of cooling water is 20 DEG C ~ 50 DEG C；
Cooling time；It is 1 ~ 3 minute；(7) it is passivated: workpiece is immersed in passivating solution Passivation Treatment 10 ~ 60 seconds；Passivating solution is by containing
The sodium dichromate of mass concentration 0.4%-0.6%, 0.1% sulfuric acid aqueous solution, formed by Passivation Treatment on galvanized workpiece surface
One layer of passivating film；(8) rinse: by the workpiece after Passivation Treatment carry out rinsing processing to get.
Embodiment 2, a kind of surface treatment method of high-voltage power transmission tower described in embodiment 1: during acid pickling and rust removing, salt
Acid adds water to be configured to the pickling aqueous solution that concentration is 40-200 grams per liter using technical hydrochloric acid more than 28% concentration；Acid pickling and rust removing
Period cancels when the concentration of pickling aqueous solution is down to 40 grams per liters or less, frerrous chloride content rises to 200 grams per liters or more
Acid is handled；When the content of acid washing water Chlorine in Solutionization ferrous iron is lower than 40 grams per liter less than 200 grams per liters, concentration of hydrochloric acid, to
Technical hydrochloric acid is added in pickling aqueous solution in right amount, continues to use.
Embodiment 3, a kind of surface treatment method of high-voltage power transmission tower, this method remove the steel tower workpiece processed
Rust, galvanizing by dipping, form fe-zn alloy layer and pure zinc layer in workpiece surface from the inside to surface；The specific steps of which are as follows:
(1) feeding: the workpiece zinc-plated to need is hung；(2) acid pickling and rust removing: the workpiece of hanging is moved in pickling tube and is carried out
Acid pickling and rust removing, pickling use hydrochloric acid, and the working concentration of hydrochloric acid is 40-200 grams per liter pickling aqueous solution；The acid pickling and rust removing time is 20-
45 minutes；Pickling to workpiece surface is in silver gray, the smooth no dark brown patch in surface, spot, and attached without greasy dirt and other impurity
?；When the concentration of the hydrochloric acid in pickling aqueous solution is in 180-200 grams per liter, the acid pickling and rust removing time is 20-25 minutes；Concentration exists
150-180 grams per liter, acid pickling and rust removing time are 25-30 minutes；For concentration in 100-150 grams per liter, the acid pickling and rust removing time is 30-40 points
Clock；For concentration in 40-100 grams per liter, the acid pickling and rust removing time is 40-45 minutes.
(3) it rinses: workpiece after acid pickling and rust removing being moved into potcher and is rinsed through flowing water, pickling solution remained on surface is removed；Work
After part is hung out from potcher, stops above potcher to drop and remove surface area water；
(4) it helps and crosses: zinc amine of the workpiece immersion containing zinc chloride and/or ammonium chloride after rinsing is helped to cross carrying out helping plating in solution,
Help plating temperature be 50 DEG C -60 DEG C, help be plating to workpiece surface deposit one layer help coating；
(5) zinc-plated: galvanizing by dipping is will to form zinc by helping the workpiece for crossing processing to immerse in zinc bath in workpiece surface and zinc-iron closes
The process of layer gold；Zinc bath temperature is 430 DEG C -450 DEG C, and the zinc bath time is -12 minutes 50 seconds；Wait for that the heating of zinc liquid reaches when operation
After 430 DEG C -450 DEG C, then by workpiece immerse zinc liquid in galvanizing by dipping；Zinc-plated zinc used is zinc ingot metal and/or zinc-containing alloy；
(6) cooling: workpiece being immersed in cooling water immediately after zinc-plated and is cooled down, the temperature of cooling water is 20 DEG C ~ 50 DEG C；
Cooling time；It is 1 ~ 3 minute；(7) it is passivated: workpiece is immersed in passivating solution Passivation Treatment 10 ~ 60 seconds；Passivating solution is by containing
The sodium dichromate of mass concentration 0.4%-0.6%, 0.1% sulfuric acid aqueous solution, formed by Passivation Treatment on galvanized workpiece surface
One layer of passivating film；(8) rinse: by the workpiece after Passivation Treatment carry out rinsing processing to get.
Embodiment 4, in a kind of surface treatment method of high-voltage power transmission tower described in embodiment 1 or 2 or 3: being removed in pickling
During rust, by vibration pickling 2-3 times above and below workpiece, and propose that liquid level checks acid pickling and rust removing quality；To the deficient acid pickling and rust removing in part
Surface using grinding wheel, wire brush or other tools removal after carry out acid pickling and rust removing again.
Embodiment 5, in a kind of surface treatment method of high-voltage power transmission tower described in embodiment 1 or 2 or 3: helping plating
Time be 1-2 minutes.
Embodiment 6, in a kind of surface treatment method of high-voltage power transmission tower described in embodiment 1: zinc bath temperature 435
DEG C -445 DEG C, remaining is same as Example 1.
Embodiment 7, in a kind of surface treatment method of high-voltage power transmission tower described in embodiment 1 or 2 or 3: when zinc-plated, work
It is 100-400mm that zinc liquid depth is immersed in part upper surface.
Embodiment 8, in a kind of surface treatment method of high-voltage power transmission tower described in embodiment 1 or 2 or 3: being removed in pickling
Before rust, ungrease treatment is carried out to workpiece, workpiece is attached to the paint, minerals, synthetic resin, cypress on surface in the fabrication process
Oily or other attachments carry out ungrease treatment；The method of processing includes that polishing or fire are roasting.
Embodiment 9, in a kind of surface treatment method of high-voltage power transmission tower described in embodiment 1 or 2 or 3: helping and cross solution
In, the content of zinc chloride or ammonium chloride is 80-150 grams per liter.
Embodiment 10, in a kind of surface treatment method of high-voltage power transmission tower described in embodiment 1 or 2 or 3: zinc-plated continuous
When work, fishing slag is carried out according to the actual situation, fish out and zinc liquid temperature is increased to 450 DEG C -460 DEG C before slag, fish out after cadmia sinking
Cadmia out.
Embodiment 11, a kind of surface treatment method of high-voltage power transmission tower, this method carry out the steel tower workpiece processed
Derusting, galvanizing by dipping, form fe-zn alloy layer and pure zinc layer in workpiece surface from the inside to surface；The specific steps of which are as follows:
(1) feeding: the workpiece zinc-plated to need is hung；(2) acid pickling and rust removing: the workpiece of hanging is moved in pickling tube and is carried out
Acid pickling and rust removing, pickling use hydrochloric acid, and the working concentration of hydrochloric acid is 100-200 grams per liter pickling aqueous solution；The acid pickling and rust removing time is 25
Minute；Pickling to workpiece surface is in silver gray, the smooth no dark brown patch in surface, spot, and is adhered to without greasy dirt and other impurity；
(3) it rinses: workpiece after acid pickling and rust removing being moved into potcher and is rinsed through flowing water, pickling solution remained on surface is removed；Workpiece from
After potcher is hung out, stops above potcher to drop and remove surface area water；
(4) it helps and crosses: zinc amine of the workpiece immersion containing zinc chloride and ammonium chloride after rinsing being helped to cross carrying out helping plating in solution, helps plating
Temperature be 55 DEG C, help be plating to workpiece surface deposit one layer help coating；The content of zinc chloride is 80 grams per liters, and the content of ammonium chloride is
120 grams per liters；
(5) zinc-plated: galvanizing by dipping is will to form zinc by helping the workpiece for crossing processing to immerse in zinc bath in workpiece surface and zinc-iron closes
The process of layer gold；Zinc bath temperature is 440 DEG C, and the zinc bath time is 2 minutes；When operation after the heating of zinc liquid reaches 440 DEG C, then by work
Part immerses galvanizing by dipping in zinc liquid；Zinc-plated zinc used is zinc ingot metal and/or zinc-containing alloy；
(6) cooling: workpiece being immersed in cooling water immediately after zinc-plated and is cooled down, the temperature of cooling water is 35 DEG C；It is cooling
Time；It is 2 minutes；(7) it is passivated: workpiece is immersed in passivating solution Passivation Treatment 20 seconds；Passivating solution is by containing mass concentration
0.5% sodium dichromate, 0.1% sulfuric acid aqueous solution, by Passivation Treatment galvanized workpiece surface formed one layer of passivating film；
(8) rinse: by the workpiece after Passivation Treatment carry out rinsing processing to get.
Claims (10)
1. a kind of surface treatment method of high-voltage power transmission tower, which is characterized in that this method carries out the steel tower workpiece processed
Derusting, galvanizing by dipping, form fe-zn alloy layer and pure zinc layer in workpiece surface from the inside to surface；The specific steps of which are as follows:
(1) feeding: the workpiece zinc-plated to need is hung；(2) acid pickling and rust removing: the workpiece of hanging is moved in pickling tube and is carried out
Acid pickling and rust removing, pickling use hydrochloric acid, and the working concentration of hydrochloric acid is 40-200 grams per liter pickling aqueous solution；The acid pickling and rust removing time is 20-
45 minutes；Pickling to workpiece surface is in silver gray, the smooth no dark brown patch in surface, spot, and attached without greasy dirt and other impurity
?；
(3) it rinses: workpiece after acid pickling and rust removing being moved into potcher and is rinsed through flowing water, pickling solution remained on surface is removed；Workpiece from
After potcher is hung out, stops above potcher to drop and remove surface area water；
(4) it helps and crosses: zinc amine of the workpiece immersion containing zinc chloride and/or ammonium chloride after rinsing is helped to cross carrying out helping plating in solution,
Help plating temperature be 50 DEG C -60 DEG C, help be plating to workpiece surface deposit one layer help coating；
(5) zinc-plated: galvanizing by dipping is will to form zinc by helping the workpiece for crossing processing to immerse in zinc bath in workpiece surface and zinc-iron closes
The process of layer gold；Zinc bath temperature is 430 DEG C -450 DEG C, and the zinc bath time is -12 minutes 50 seconds；Wait for that the heating of zinc liquid reaches when operation
After 430 DEG C -450 DEG C, then by workpiece immerse zinc liquid in galvanizing by dipping；Zinc-plated zinc used is zinc ingot metal and/or zinc-containing alloy；
(6) cooling: workpiece being immersed in cooling water immediately after zinc-plated and is cooled down, the temperature of cooling water is 20 DEG C ~ 50 DEG C；
Cooling time；It is 1 ~ 3 minute；(7) it is passivated: workpiece is immersed in passivating solution Passivation Treatment 10 ~ 60 seconds；Passivating solution is by containing
The sodium dichromate of mass concentration 0.4%-0.6%, 0.1% sulfuric acid aqueous solution, formed by Passivation Treatment on galvanized workpiece surface
One layer of passivating film；(8) rinse: by the workpiece after Passivation Treatment carry out rinsing processing to get.
2. a kind of surface treatment method of high-voltage power transmission tower according to claim 1, it is characterised in that: acid pickling and rust removing mistake
Cheng Zhong, hydrochloric acid add water to be configured to the pickling aqueous solution that concentration is 40-200 grams per liter using technical hydrochloric acid more than 28% concentration；
During acid pickling and rust removing, when the concentration of pickling aqueous solution is down to 40 grams per liters or less, frerrous chloride content rises to 200 grams per liters or more
When, it is handled as spent acid；When acid washing water Chlorine in Solutionization ferrous iron content less than 200 grams per liters, concentration of hydrochloric acid lower than 40 grams/
When rising, technical hydrochloric acid is added in right amount to pickling aqueous solution, continues to use.
3. a kind of surface treatment method of high-voltage power transmission tower according to claim 1 or 2, it is characterised in that: work as pickling
For the concentration of hydrochloric acid in aqueous solution in 180-200 grams per liter, the acid pickling and rust removing time is 20-25 minutes；Concentration 150-180 grams/
It rises, the acid pickling and rust removing time is 25-30 minutes；For concentration in 100-150 grams per liter, the acid pickling and rust removing time is 30-40 minutes；Concentration exists
40-100 grams per liter, acid pickling and rust removing time are 40-45 minutes.
4. a kind of surface treatment method of high-voltage power transmission tower according to claim 1 or 2, it is characterised in that: in pickling
In descaling process, by vibration pickling 2-3 times above and below workpiece, and propose that liquid level checks acid pickling and rust removing quality；The deficient pickling in part is removed
The surface of rust carries out acid pickling and rust removing after removing using grinding wheel, wire brush or other tools again.
5. a kind of surface treatment method of high-voltage power transmission tower according to claim 1, it is characterised in that: help plating
Time is 1-2 minutes.
6. a kind of surface treatment method of high-voltage power transmission tower according to claim 1, it is characterised in that: zinc bath temperature is
435℃-445℃。
7. a kind of surface treatment method of high-voltage power transmission tower according to claim 1, it is characterised in that: when zinc-plated, work
It is 100-400mm that zinc liquid depth is immersed in part upper surface.
8. a kind of surface treatment method of high-voltage power transmission tower according to claim 1, it is characterised in that: in acid pickling and rust removing
Before, ungrease treatment is carried out to workpiece, workpiece is attached to paint, minerals, synthetic resin, the pitch on surface in the fabrication process
Or other attachments carry out ungrease treatment；The method of processing includes that polishing or fire are roasting.
9. a kind of surface treatment method of high-voltage power transmission tower according to claim 1, it is characterised in that: help and cross solution
In, the content of zinc chloride or ammonium chloride is 80-150 grams per liter.
10. a kind of surface treatment method of high-voltage power transmission tower according to claim 1, it is characterised in that: zinc-plated continuous
When work, fishing slag is carried out according to the actual situation, fish out and zinc liquid temperature is increased to 450 DEG C -460 DEG C before slag, fish out after cadmia sinking
Cadmia out.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109972068A (en) * | 2019-03-04 | 2019-07-05 | 京信通信系统（中国）有限公司 | Method for anticorrosion treatment, anti-corrosion electric conducting component and the equipment of component |
| CN113061825A (en) * | 2021-03-24 | 2021-07-02 | 日照中意华坤金属制造有限公司 | Iron art railing galvanizing process |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013007390A1 (en) * | 2011-07-13 | 2013-01-17 | Tata Steel Uk Limited | Method of providing a multifunctional coating on a metal substrate |
| CN105755415A (en) * | 2014-12-13 | 2016-07-13 | 重庆泰达模具制造有限公司 | Hot-dip galvanizing process |
| CN107794474A (en) * | 2016-08-31 | 2018-03-13 | 浙江通兴铁塔有限公司 | A kind of rare earth alloy hot-dip galvanizing technique |
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|---|---|---|---|---|
| WO2013007390A1 (en) * | 2011-07-13 | 2013-01-17 | Tata Steel Uk Limited | Method of providing a multifunctional coating on a metal substrate |
| CN105755415A (en) * | 2014-12-13 | 2016-07-13 | 重庆泰达模具制造有限公司 | Hot-dip galvanizing process |
| CN107794474A (en) * | 2016-08-31 | 2018-03-13 | 浙江通兴铁塔有限公司 | A kind of rare earth alloy hot-dip galvanizing technique |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109972068A (en) * | 2019-03-04 | 2019-07-05 | 京信通信系统（中国）有限公司 | Method for anticorrosion treatment, anti-corrosion electric conducting component and the equipment of component |
| CN113061825A (en) * | 2021-03-24 | 2021-07-02 | 日照中意华坤金属制造有限公司 | Iron art railing galvanizing process |
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Address after: 222000 No. 8 Changjiang Road, Xinpu Economic Development Zone, Haizhou District, Lianyungang City, Jiangsu Province Applicant after: Jiangsu Qi Tian Iron Tower Manufacturing Co., Ltd. Address before: 222000 West Rizhao Avenue, Zhewang Lingang Industrial Zone, Ganyu County, Lianyungang City, Jiangsu Province Applicant before: Jiangsu Qi Tian Iron Tower Manufacturing Co., Ltd. |
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Address after: 222000 No.8 Changjiang Road, Xinpu Development Zone, Haizhou District, Lianyungang City, Jiangsu Province Applicant after: JIANGSU QITIAN IRON TOWER MANUFACTURING Co.,Ltd. Address before: 222000 No. 8 Changjiang Road, Xinpu Economic Development Zone, Haizhou District, Lianyungang City, Jiangsu Province Applicant before: JIANGSU QITIAN IRON TOWER MANUFACTURING Co.,Ltd. |
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Application publication date: 20190118 |