CN110484944A - A kind of preparation method of the composite electrolyte for preparing petroleum pipeline corrosion-resistant surface and ultrasonic wave added electro-deposition petroleum pipeline anticorrosion layer - Google Patents
A kind of preparation method of the composite electrolyte for preparing petroleum pipeline corrosion-resistant surface and ultrasonic wave added electro-deposition petroleum pipeline anticorrosion layer Download PDFInfo
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- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D15/00—Electrolytic or electrophoretic production of coatings containing embedded materials, e.g. particles, whiskers, wires
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
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- C25D3/00—Electroplating: Baths therefor
- C25D3/02—Electroplating: Baths therefor from solutions
- C25D3/56—Electroplating: Baths therefor from solutions of alloys
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- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/20—Electroplating using ultrasonics, vibrations
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- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/34—Pretreatment of metallic surfaces to be electroplated
- C25D5/36—Pretreatment of metallic surfaces to be electroplated of iron or steel
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- C—CHEMISTRY; METALLURGY
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- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
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Abstract
The invention discloses the preparation methods of a kind of composite electrolyte for preparing petroleum pipeline corrosion-resistant surface and ultrasonic wave added electro-deposition petroleum pipeline anticorrosion layer, belong to electrolysis or electrophoresis process technical field, its concentration of solute material composition in the electrolytic solution are as follows: 150~200g/L of nickel sulfate, 50~80g/L of nickel chloride, 30~60g/L of dibastic sodium phosphate, 0.1~0.2g/L of lauryl sodium sulfate, 30~50g/L of nanometer silicon carbide 6g/L, 10~30g/L of sodium sulphate and citric acid, solvent is deionized water.Nickel and phosphorus in this electrolyte is in electrodeposition process, reduction reaction co-deposition occurs on the stainless steel base as cathode on stainless steel base, form the smooth nickel-phosphorus alloy of amorphous structure and surface, improve the corrosion resistance of coating itself, on the one hand nanometer silicon carbide, which is embedded in nickel-phosphorus alloy, forms micro-nano dual asperity structure with nickel-phosphorus alloy, air layer is formed between water droplet when contacting water droplet, forms hydrophobic structure, improves corrosion resistance；On the other hand the wearability for improving coating, improves its service life.
Description
Technical field
The invention belongs to be electrolysed or electrophoresis process technical field, and in particular to a kind of to prepare answering for petroleum pipeline corrosion-resistant surface
Close the preparation method of electrolyte and ultrasonic wave added electro-deposition petroleum pipeline anticorrosion layer.
Background technique
Metal material is due to being made into pipe fitting with good characteristics such as good electric conductivity, thermal diffusivity and easy processings
It is widely used on various fields, especially oil field.However the chemical property of metal tube is more active, and quilt is easy in petroleum
Corrosion, so as to shorten the life of pipe fitting.So mostly using the relatively good stainless steel tube of corrosion resistance, greatly to reduce base
The corrosion efficiency of material, but still can be corroded over time.
In order to improve the corrosion resisting property of stainless steel, researcher is attempted by the inspiration of " lotus leaf effect " in nature in base
Building has the coating of super hydrophobic surface on material, improves its corrosion resistance by reducing the attachment of liquid.Preparation is super at present
The method of hydrophobic surface has sol-gel processing, anodizing, etching method and chemical deposition etc., but these methods exist surely
It is qualitative it is poor, environmental pollution is serious and the binding force of coating and matrix is poor, really realize industrialized production.
Then, someone, which has studied, prepares super hydrophobic surface using electrodeposition process.201510527327.9 disclosure of Chinese invention
A kind of preparation method in stainless steel base bionic super-hydrophobic graphene film, passes through electrodeposition process by substrate of stainless steel
Being formed has the nickel film of micro nano structure as intermediate deposit, then uses CVD method in nickel plating stainless steel surface using it as catalyst
The bionical graphene film for constructing micro-nano-scale bilayer hierarchical structure makes stainless steel have superhydrophobic characteristic.But the technique
Equipment used is expensive, and preparation process is complicated, and reaction source and the residual air after reacting for participating in deposition are inflammable and explosive or even toxic.
Chinese invention 201710039436.5 provides a kind of super-hydrophobic stainless steel watch finishing coat and preparation method thereof, passes through
Two-step method orients electric deposition nickel, copper or monel, has obtained the micro-nano structure in display arrangement, micro-nano knot in stainless steel surface
Structure includes micron order pointed cone and nanoscale whisker, and nanoscale whisker forms petal-shaped knot to external radiation centered on micron order pointed cone
Structure improves the corrosion resisting property of stainless steel using petal-like super-drainage structure then again through aoxidizing.Although the method is theoretically
It can be improved the corrosion resistance of stainless steel, but technical process is not easy to control, is difficult that the micro-nano structure of rule is made, causes hydrophobicity
Poor, service life is short.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of composite electrolyte for preparing petroleum pipeline corrosion-resistant surface and
It is smooth and with micro-nano dual structure that surface can be made in the preparation method of ultrasonic wave added electro-deposition petroleum pipeline anticorrosion layer
Air layer is formed between coating, with water droplet, improves hydrophobic performance, and coating itself has good corrosion resistance.
In order to solve the above technical problems, the technical scheme is that designing a kind of petroleum pipeline corrosion-resistant surface of preparing
Composite electrolyte, it is characterised in that: the concentration of solute material composition in the electrolytic solution are as follows:
150~200g/L of nickel sulfate
50~80g/L of nickel chloride
30~60g/L of dibastic sodium phosphate
0.1~0.2g/L of lauryl sodium sulfate
Nanometer silicon carbide 6g/L
10~30g/L of sodium sulphate
30~50g/L of citric acid
Solvent is deionized water.
Preferably, the concentration of solute material composition in the electrolytic solution are as follows:
Nickel sulfate 175g/L
Nickel chloride 65g/L
Dibastic sodium phosphate 45g/L
Lauryl sodium sulfate 0.15g/L
Nanometer silicon carbide 6g/L
Sodium sulphate 20g/L
Citric acid 40g/L
Solvent is deionized water.
Further, the pH value of electrolyte is 4.
Further, the partial size of nanometer silicon carbide is 40nm.
The present invention also provides a kind of preparation method using above-mentioned electrolyte ultrasonic wave added electro-deposition petroleum pipeline anticorrosion layer,
It is characterized by comprising following steps:
(1) it prepares composite electrolyte: nickel sulfate, nickel chloride, dibastic sodium phosphate, sodium sulphate and citric acid being added into deionized water,
Through the uniform obtained solution of magnetic agitation, the solution in magnetic agitation is added after lauryl sodium sulfate and nanometer silicon carbide are mixed
It is interior, it is uniformly mixed obtained electrolyte, the concentration of each material composition in the electrolytic solution are as follows:
150~200g/L of nickel sulfate
50~80g/L of nickel chloride
30~60g/L of dibastic sodium phosphate
0.1~0.2g/L of lauryl sodium sulfate
Nanometer silicon carbide 6g/L
10~30g/L of sodium sulphate
30~50g/L of citric acid；
(2) electro-deposition: ultrasonic vibration installation is added in the composite electrolyte made from step (1), stainless steel and pure nickel plate are put down
Row is placed in progress electro-deposition 60min in composite electrolyte, and stainless steel connects the cathode of working power, and pure nickel plate connects power supply dress
The anode set, the distance between stainless steel and pure nickel plate are 2cm, and the current density of electro-deposition is 10A/dm2；
(3) low-surface-energy is modified: being cleaned the stainless steel through step (2) electro-deposition with deionized water, is then placed in palmitinic acid ethyl alcohol
10min is impregnated in solution, obtains the stainless steel with micro-nano double-layer structure nickel-phosphor-nSiC composite deposite, the palmitinic acid second
Alcoholic solution is mixed by volume for 1:100 by palmitinic acid and dehydrated alcohol.
Further, the concentration of each material composition in the electrolytic solution in step (1) are as follows:
Nickel sulfate 175g/L
Nickel chloride 65g/L
Dibastic sodium phosphate 45g/L
Lauryl sodium sulfate 0.15g/L
Nanometer silicon carbide 6g/L
Sodium sulphate 20g/L
Citric acid 40g/L.
Further, stainless steel used will pass through pre-treatment step in step (2), and pre-treatment step includes polishing: it is special
Sign is: stainless steel used will pass through pre-treatment step in step (2), and pre-treatment step includes polishing: with 800~2000 purposes
Sand paper polishing, removes the oxidation film on surface, is cleaned up after being first cleaned by ultrasonic 10min with alcohol with deionized water, then with third
It is cleaned up after ketone ultrasonic cleaning 10min with deionized water.
Further, pre-treatment step further includes alkali cleaning: deionized water is added in sodium phosphate, sodium hydroxide and sodium carbonate
In be configured to the first mixed solution, concentration of the sodium phosphate in the first mixed solution is 30~70g/L, and sodium hydroxide is mixed first
Closing the concentration in solution is 10~20g/L, and concentration of the sodium carbonate in the first mixed solution is 30~45g/L, will be polished
Stainless steel is put into the first mixed solution the alkali cleaning 10min at 80 DEG C, is then cleaned up with deionized water.
Further, pre-treatment step further includes acid-wash activation: the concentrated sulfuric acid and deionized water are mixed according to volume ratio 1:15
Close, if fourth and methenamine is then added, the second mixed solution be made, if concentration of the fourth in the second mixed solution be 0.5~
1g/L, concentration of the methenamine in the second mixed solution are 0.1~0.5g/L, and the stainless steel through alkali cleaning is put into the second mixing
Acid-wash activation 2min in solution, is then cleaned up with deionized water.
Further, concentration of the sodium phosphate in the first mixed solution is 50g/L, and sodium hydroxide is in the first mixed solution
Concentration be 15g/L, concentration of the sodium carbonate in the first mixed solution be 40g/L.
Compared with prior art, the beneficial effects of the present invention are:
1, due in composite electrolyte nickel and phosphorus in electrodeposition process, restored on the stainless steel base as cathode
Reaction co-deposition forms the smooth nickel-phosphorus alloy of amorphous structure and surface, improves coating itself on stainless steel base
Corrosion resistance is embedded in silicon carbide in nickel-phosphorus alloy and on the one hand forms micro-nano dual asperity structure with nickel-phosphorus alloy, contacting
There is between water droplet air layer when water droplet, form hydrophobic structure, improve corrosion resistance；On the other hand the wearability of coating can be improved,
Improve its service life.
2, because on the one hand the lauryl sodium sulfate in electrolyte can increase the wetability of nanometer silicon carbide, the group of reduction
Poly- phenomenon, conducive to equably inlaying in the coating, is formed uniform so that nanometer silicon carbide is distributed more uniform in the electrolytic solution
Micro-nano dual asperity structure, further increases hydrophobicity and wearability；On the other hand in its structure chain alkyl have dredge
It is aqueous, the surface tension between plating solution and matrix can be reduced, the firmness combined between coating and matrix is enhanced.
3, due to during electro-deposition, there is ultrasonic vibration to stir electrolyte always, optimal supersonic frequency is selected, is made
The each element distribution obtained in electrolyte is more uniform, the movement velocity between ion is improved, to keep two kinds of ions of nickel phosphorus more preferable
Reduction reaction occurs in matrix surface, it is evenly dispersed, reduce the porosity of film layer, obtain it is fine and close, uniformly and have metallic luster
Coating, preferably improve film layer corrosion resistance and wearability.
4, nickel ion slightly can be provided for electrolyte as the pure nickel plate of anode, increase cathodic polarization effect, promote
Nickel deposition；The presence of chloride ion can prevent or reduce the passivation of pure nickel plate in electrolyte.
5, on the one hand the citric acid in electrolyte can make the deposition potential of two kinds of metals of nickel phosphorus close, realize and be co-deposited；
On the other hand make to plate fast increase, maintain the PH of composite electrolyte, prevent the change dramatically of acidity, keep coating bright, it is fine and close.
6, when the pH value of electrolyte is 4, the comparision contents of each element are moderate in coating, and the corrosion resistance and wearability of coating are most
By force.
7, low-surface-energy modification is carried out after preparing coating, the free energy on surface is reduced, further increases the hydrophobicity of coating,
Then its corrosion resisting property is improved.
8, the stainless steel before electro-deposition is pre-processed, its surface impurity can be thoroughly removed, on the one hand reduce coating
In impurity, improve the quality of coating；On the other hand it can enhance the binding force between coating and stainless steel base, keep coating secured
Attachment, improves its durability.
9, due to use specific structure cathode roll, can micro-nano dual structure and low-surface-energy modification mention jointly
High hydrophobicity, and the wear-resisting and corrosion resisting property of coating itself is improved, convenient for promoting and applying in the art.
Specific embodiment
Present invention is further described in detail With reference to embodiment.
Embodiment one
Stainless steel surface super-drainage structure is made via following steps in the present embodiment:
(1) it prepares composite electrolyte: nickel sulfate, nickel chloride, dibastic sodium phosphate, sodium sulphate and citric acid being added into deionized water,
Through the uniform obtained solution of magnetic agitation, the solution in magnetic agitation is added after lauryl sodium sulfate and nanometer silicon carbide are mixed
It is interior, it is uniformly mixed obtained electrolyte, the concentration of nickel sulfate in the electrolytic solution is 150g/L, and the concentration of nickel chloride in the electrolytic solution is
50g/L, the concentration of dibastic sodium phosphate in the electrolytic solution are 30g/L, and the concentration of lauryl sodium sulfate in the electrolytic solution is 0.1g/L,
The concentration of nanometer silicon carbide in the electrolytic solution is 6g/L, and the concentration of sodium sulphate in the electrolytic solution is 10g/L, and citric acid to be electrolysed
The pH value of liquid is 4, and the partial size of nanometer silicon carbide is 40nm；
(2) it polishes: being polished with the sand paper of 800~2000 mesh, remove the oxidation film on surface, be first cleaned by ultrasonic 10min with acetone
It is cleaned up with deionized water, then is cleaned up after being cleaned by ultrasonic 10min with alcohol with deionized water afterwards；
(3) alkali cleaning: sodium phosphate, sodium hydroxide and sodium carbonate are added in deionized water and are configured to the first mixed solution, sodium phosphate
Concentration in the first mixed solution is 30g/L, and concentration of the sodium hydroxide in the first mixed solution is 10g/L, and sodium carbonate exists
Concentration in first mixed solution is 30g/L, and the stainless steel polished through step (2) is put into the first mixed solution at 80 DEG C
Alkali cleaning 10min, is then cleaned up with deionized water.
(4) acid-wash activation: the concentrated sulfuric acid is mixed with deionized water according to volume ratio 1:15, if fourth and Wu Luotuo is then added
The second mixed solution is made in product, if concentration of the fourth in the second mixed solution is 0.5g/L, methenamine is in the second mixed solution
In concentration be 0.1g/L, the stainless steel handled through step (3) is put into acid-wash activation 2min in the second mixed solution, is then used
Deionized water cleans up.
(5) electro-deposition: being added ultrasonic vibration installation in the composite electrolyte made from step (1), will handle through step (4)
Stainless steel and pure nickel plate be placed in parallel in composite electrolyte progress electro-deposition 60min, stainless steel connects the negative of working power
Pole, pure nickel plate connect the anode of power supply device, and the distance between stainless steel and pure nickel plate are 2cm, and the current density of electro-deposition is
10A/dm2；
(6) low-surface-energy is modified: being cleaned the stainless steel through step (5) electro-deposition with deionized water, is then placed in palmitinic acid ethyl alcohol
10min is impregnated in solution, obtains the stainless steel with micro-nano double-layer structure nickel-phosphor-nSiC composite deposite, the palmitinic acid second
Alcoholic solution is mixed by volume for 1:100 by palmitinic acid and dehydrated alcohol.
By the stainless steel of modification, connect using optical contact angle tester measurement deionized water in the static state of super hydrophobic surface
Feeler is 161 °.Its coefficient of friction is 0.31, and the coefficient of friction of not electrodeposited stainless steel substrates is 0.53, it is seen that its is resistance to
Mill property is more obvious better than before unmodified.It is the corrosion of the coating matrix of survey in 3.5% sodium chloride solution in mass percent concentration
Electric current is 0.632 μ A/cm2, there is preferable corrosion resistance.
Embodiment two
The present embodiment and embodiment one the difference is that:
The concentration of each material composition in the electrolytic solution in step (1) are as follows:
Nickel sulfate 175g/L
Nickel chloride 65g/L
Dibastic sodium phosphate 45g/L
Lauryl sodium sulfate 0.15g/L
Nanometer silicon carbide 6g/L
Sodium sulphate 20g/L
The dosage of citric acid makes the pH value of composite electrolyte be 4,
In step (3), concentration of the sodium phosphate in the first mixed solution is 50g/L, and sodium hydroxide is in the first mixed solution
Concentration is 15g/L, and concentration of the sodium carbonate in the first mixed solution is 40g/L；
In step (4), if concentration of the fourth in the second mixed solution is 0.75g/L, methenamine is in the second mixed solution
Concentration is 0.3g/L.
By the stainless steel of modification, connect using optical contact angle tester measurement deionized water in the static state of super hydrophobic surface
Feeler is 162 °.Its coefficient of friction is 0.3, and the coefficient of friction of not electrodeposited stainless steel substrates is 0.53, it is seen that its is wear-resisting
Property is more obvious better than before unmodified.It is the corrosion electricity of the coating matrix of survey in 3.5% sodium chloride solution in mass percent concentration
Stream is 0.633 μ A/cm2, there is preferable corrosion resistance.
Embodiment three
The present embodiment and embodiment one the difference is that:
The concentration of each material composition in the electrolytic solution in step (1) are as follows:
Nickel sulfate 200g/L
Nickel chloride 80g/L
Dibastic sodium phosphate 60g/L
Lauryl sodium sulfate 0.2g/L
Nanometer silicon carbide 6g/L
Sodium sulphate 30g/L
The dosage of citric acid makes the pH value of composite electrolyte be 4,
In step (3), concentration of the sodium phosphate in the first mixed solution is 70g/L, and sodium hydroxide is in the first mixed solution
Concentration is 20g/L, and concentration of the sodium carbonate in the first mixed solution is 45g/L；
In step (4), if concentration of the fourth in the second mixed solution is 1g/L, concentration of the methenamine in the second mixed solution
For 0.5g/L.
By the stainless steel of modification, connect using optical contact angle tester measurement deionized water in the static state of super hydrophobic surface
Feeler is 162 °.Its coefficient of friction is 0.29, and the coefficient of friction of not electrodeposited stainless steel substrates is 0.53, it is seen that its is wear-resisting
Property is more obvious better than before unmodified.It is the corrosion electricity of the coating matrix of survey in 3.5% sodium chloride solution in mass percent concentration
Stream is 0.635 μ A/cm2, there is preferable corrosion resistance.
Stainless steel used is 304L type stainless steel in above-described embodiment.
The above described is only a preferred embodiment of the present invention, being not that the invention has other forms of limitations, appoint
What those skilled in the art changed or be modified as possibly also with the technology contents of the disclosure above equivalent variations etc.
Imitate embodiment.But without departing from the technical solutions of the present invention, according to the technical essence of the invention to above embodiments institute
Any simple modification, equivalent variations and the remodeling made, still fall within the protection scope of technical solution of the present invention.
Claims (10)
1. a kind of composite electrolyte for preparing petroleum pipeline corrosion-resistant surface, it is characterised in that: solute material composition is in the electrolytic solution
Concentration are as follows:
150~200g/L of nickel sulfate
50~80g/L of nickel chloride
30~60g/L of dibastic sodium phosphate
0.1~0.2g/L of lauryl sodium sulfate
Nanometer silicon carbide 6g/L
10~30g/L of sodium sulphate
30~50g/L of citric acid
Solvent is deionized water.
2. the composite electrolyte described in accordance with the claim 1 for preparing petroleum pipeline corrosion-resistant surface, it is characterised in that: solute raw material
The concentration of ingredient in the electrolytic solution are as follows:
Nickel sulfate 175g/L
Nickel chloride 65g/L
Dibastic sodium phosphate 45g/L
Lauryl sodium sulfate 0.15g/L
Nanometer silicon carbide 6g/L
Sodium sulphate 20g/L
Citric acid 40g/L
Solvent is deionized water.
3. the composite electrolyte according to claim 1 or 2 for preparing petroleum pipeline corrosion-resistant surface, it is characterised in that: electrolysis
The pH value of liquid is 4.
4. the composite electrolyte described in accordance with the claim 3 for preparing petroleum pipeline corrosion-resistant surface, it is characterised in that: nano silicon carbide
The partial size of silicon is 40nm.
5. a kind of preparation method of ultrasonic wave added electro-deposition petroleum pipeline anticorrosion layer, it is characterised in that: the following steps are included:
(1) it prepares composite electrolyte: nickel sulfate, nickel chloride, dibastic sodium phosphate, sodium sulphate and citric acid being added into deionized water,
Through the uniform obtained solution of magnetic agitation, the solution in magnetic agitation is added after lauryl sodium sulfate and nanometer silicon carbide are mixed
It is interior, it is uniformly mixed obtained electrolyte, the concentration of each material composition in the electrolytic solution are as follows:
150~200g/L of nickel sulfate
50~80g/L of nickel chloride
30~60g/L of dibastic sodium phosphate
0.1~0.2g/L of lauryl sodium sulfate
Nanometer silicon carbide 6g/L
10~30g/L of sodium sulphate
30~50g/L of citric acid；
(2) electro-deposition: ultrasonic vibration installation is added in the composite electrolyte made from step (1), stainless steel and pure nickel plate are put down
Row is placed in progress electro-deposition 60min in composite electrolyte, and stainless steel connects the cathode of working power, and pure nickel plate connects power supply dress
The anode set, the current density of electro-deposition are 10A/dm2；
(3) low-surface-energy is modified: being cleaned the stainless steel through step (2) electro-deposition with deionized water, is then placed in palmitinic acid ethyl alcohol
10min is impregnated in solution, obtains the stainless steel with micro-nano double-layer structure nickel-phosphor-nSiC composite deposite, the palmitinic acid second
Alcoholic solution is mixed by volume for 1:100 by palmitinic acid and dehydrated alcohol.
6. the preparation method of ultrasonic wave added electro-deposition petroleum pipeline anticorrosion layer according to claim 5, it is characterised in that: step
Suddenly the concentration of each material composition in the electrolytic solution in (1) are as follows:
Nickel sulfate 175g/L
Nickel chloride 65g/L
Dibastic sodium phosphate 45g/L
Lauryl sodium sulfate 0.15g/L
Nanometer silicon carbide 6g/L
Sodium sulphate 20g/L
Citric acid 40g/L.
7. according to the preparation method of ultrasonic wave added electro-deposition petroleum pipeline anticorrosion layer described in claim 5 or 6, feature exists
In: stainless steel used will pass through pre-treatment step in step (2), and pre-treatment step includes polishing: it is characterized by: step (2)
In stainless steel used to pass through pre-treatment step, pre-treatment step includes polishing: polished with the sand paper of 800~2000 mesh, removal
Oxidation film on surface is cleaned up with deionized water after being first cleaned by ultrasonic 10min with acetone, then is cleaned with EtOH Sonicate
It is cleaned up after 10min with deionized water.
8. the preparation method of ultrasonic wave added electro-deposition petroleum pipeline anticorrosion layer according to claim 7, it is characterised in that: pre-
Processing step further includes alkali cleaning: molten by the first mixing is configured in sodium phosphate, sodium hydroxide and sodium carbonate addition deionized water
Liquid, concentration of the sodium phosphate in the first mixed solution are 30~70g/L, and concentration of the sodium hydroxide in the first mixed solution is 10
~20g/L, concentration of the sodium carbonate in the first mixed solution are 30~45g/L, and the stainless steel through polishing is put into the first mixing
In solution at 80 DEG C alkali cleaning 10min, then cleaned up with deionized water.
9. the preparation method of ultrasonic wave added electro-deposition petroleum pipeline anticorrosion layer according to claim 8, it is characterised in that: pre-
Processing step further includes acid-wash activation: the concentrated sulfuric acid being mixed with deionized water according to volume ratio 1:15, if fourth and crow is then added
The second mixed solution is made in Lip river tropine, if concentration of the fourth in the second mixed solution is 0.5~1g/L, methenamine is second
Concentration in mixed solution is 0.1~0.5g/L, and the stainless steel through alkali cleaning is put into acid-wash activation 2min in the second mixed solution,
Then it is cleaned up with deionized water.
10. the preparation method of ultrasonic wave added electro-deposition petroleum pipeline anticorrosion layer according to claim 9, it is characterised in that:
Concentration of the sodium phosphate in the first mixed solution is 50g/L, and concentration of the sodium hydroxide in the first mixed solution is 15g/L, carbon
Concentration of the sour sodium in the first mixed solution is 40g/L.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112391657A (en) * | 2020-10-29 | 2021-02-23 | 江西上品金刚石工具科技有限公司 | Method for electroplating diamond drill bit by utilizing ultrasonic waves |
| CN114717614A (en) * | 2022-05-27 | 2022-07-08 | 江苏星火特钢集团有限公司 | Electroplating solution and surface treatment method for improving corrosion resistance of stainless steel by using same |
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