CN110314833A - A kind of inner wall of oil tank anti-corrosion spray method - Google Patents
A kind of inner wall of oil tank anti-corrosion spray method Download PDFInfo
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- CN110314833A CN110314833A CN201910669167.XA CN201910669167A CN110314833A CN 110314833 A CN110314833 A CN 110314833A CN 201910669167 A CN201910669167 A CN 201910669167A CN 110314833 A CN110314833 A CN 110314833A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/10—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by other chemical means
- B05D3/102—Pretreatment of metallic substrates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/22—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to internal surfaces, e.g. of tubes
- B05D7/227—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to internal surfaces, e.g. of tubes of containers, cans or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/50—Multilayers
- B05D7/56—Three layers or more
- B05D7/58—No clear coat specified
- B05D7/584—No clear coat specified at least some layers being let to dry, at least partially, before applying the next layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2350/00—Pretreatment of the substrate
- B05D2350/10—Phosphatation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2451/00—Type of carrier, type of coating (Multilayers)
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2504/00—Epoxy polymers
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention discloses a kind of inner wall of oil tank anti-corrosion spray methods, the inner wall of oil tank is started the cleaning processing, first the trapped fuel in oil tank is excluded, it opens ventilation opening and excludes oil gas in tank, and gas concentration is measured to safe range, then staff cleans greasy dirt, water and other sediments into tank broom or wooden tool, and carries out hydroblasting to inner wall of oil tank with device for cleaning tank equipment, the inner wall of oil tank after being cleaned；A kind of inner wall of oil tank anti-corrosion spray method of the present invention; the inner wall of oil tank is successively started the cleaning processing, surfacing processing, inner wall of oil tank are checked, carry out phosphorating treatment and inner wall of oil tank carries out the multi-step such as spraying; it effectively prevent inner wall of oil tank by local corrosion; priming paint and the adhesion strength on inner wall of oil tank surface enhance simultaneously; pass through the spraying paint bed of material; the anticorrosive paint coating of coordinated insulation carries out Combined Protection; coating quality is high; it is not easily to fall off after spraying; inner wall of oil tank can be effectively prevent to corrode, and the anti-corrosion time is long.
Description
Technical field
The invention belongs to spraying technology field, in particular to a kind of inner wall of oil tank anti-corrosion spray method.
Background technique
Oil tank, also known as oil storage tank or storage tank are pressed for storing oil product and with the large container of relatively regular body
The difference of construction material can be divided into metallic oil tank and nonmetallic oil tank, and oil tank is mainly used for petroleum storage, and petroleum is also known as original
Oil is a kind of sticky, dark brown (sometimes a little green) liquid.There are petroleum storage in upper crustal some areas.It is not by
Same hydrocarbon mixes composition, and main constituents are alkane, and the members such as sulfur-bearing, oxygen, nitrogen, phosphorus, vanadium are furthermore gone back in petroleum
Element, petroleum is long-term stored at meeting in oil tank so that different degrees of corrosion phenomenon occurs in inner wall of oil tank；And existing inner wall of oil tank is anti-
Rotten spraying method, anti-corrosion effect is unobvious after spraying, so that the paint after spraying is often fallen off, the anti-corrosion time is short, while oil tank
Inner wall corrosion, so that inner wall of oil tank often places under repair and anticorrosive work, leverages the service life of oil tank, for this purpose, I
Propose a kind of inner wall of oil tank anti-corrosion spray method.
Summary of the invention
The main purpose of the present invention is to provide a kind of inner wall of oil tank anti-corrosion spray methods, can effectively solve background technique
The problems in.
To achieve the above object, the technical scheme adopted by the invention is as follows:
A kind of inner wall of oil tank anti-corrosion spray method, the inner wall of oil tank anti-corrosion spray method the following steps are included:
Step 1: the inner wall of oil tank is started the cleaning processing, first the trapped fuel in oil tank is excluded, opens ventilation opening row
Except oil gas in tank, and measure gas concentration to safe range, then staff into tank broom or wooden tool clean greasy dirt,
Water and other sediments, and hydroblasting is carried out to inner wall of oil tank with device for cleaning tank equipment, the inner wall of oil tank after being cleaned；
Step 2: the inner wall of oil tank after cleaning is carried out surfacing processing, derust, is derusted technique pair using pickling first
Inner wall of oil tank is sprayed, Shi Changwei 80-120min, carries out clear water flushing after excluding acid solution, Shi Changyue 15-20min works as flushing
Draining-off sewage when liquid is neutral, carries out Passivation Treatment twice, and when first time is about 3-5min, and second when is about 5-8min, and 2 times
It waits 5-10min after passivation, then with 290Kpa pressure flush of water 8-12min, excludes flushing water, next roots out inner wall of oil tank surface
After old paint, aeration-drying, the inner wall of oil tank after obtaining inner wall finishing；
Step 3: being checked the inner wall of oil tank after inner wall is modified is obtained, checks after oil tank is dry and match inside oil tank
Part, and replacement is updated to the accessory corroded, obtain the inner wall of oil tank of inner wall non-corroding；
Step 4: by obtain inner wall non-corroding inner wall of oil tank carry out phosphorating treatment, using phosphating solution to inner wall of oil tank into
Row phosphorating treatment makes inner wall of oil tank surface form phosphating coat and completely cut off air, wherein the formula of the phosphating solution is with 500-
The water of 800mL is solvent, zinc oxide 25g/L, nickel nitrate 20g/L, phosphoric acid 35g/L, nitric acid 10-15g/L, film layer improver 1.5-
Secondly each position 300-350mm of inner wall of oil tank margin plate should be done reinforcement anti-corrosion spray by 2.5g/L, obtained phosphating solution is sprayed on
Inner wall of oil tank surface provides protection to inner wall of oil tank, prevents inner wall of oil tank to be corroded, the inner wall of oil tank after obtaining anti-corrosion；
Step 5: spraying the inner wall of oil tank after anti-corrosion is obtained, red lead primer is first sprayed on inner wall of oil tank appearance
It brushes 3 times on face, again sprays non-solvent epoxy priming paint in 1-2.5h after drying, brush four repeatedly, after drying in 3-5h again
Epoxy glass scale coating is sprayed again, six is brushed repeatedly, dries 2h-3h again, inner wall of oil tank anti-corrosion can be completed
Spraying method obtains the good inner wall of oil tank of anticorrosion with painting effect.
Preferably, red lead primer is made of certainly dry red lead, alkyd resin, rust resisting pigment, filler, auxiliary agent, solvent etc.
Antirusting paint.
Preferably, environment temperature is most preferably 15-35 DEG C when spraying, and drying temperature is 50-70 DEG C, and relative air humidity is little
In 65%.
Preferably, the coating thickness 50-60um of priming paint, intermediate coat coating thickness 150-180um, finishing coat coating thickness 130-
150um。
Preferably, the phosphating solution the preparation method comprises the following steps: the phosphoric acid of precise respective volume, nitric acid are added clean dry
In dry glass container, Zinc oxide powder stirring is added, until zinc oxide dissolution is completely, sequentially adds nickel nitrate and film layer later
Improver stirring, makes it completely dissolved, can be slowly added to water later and be diluted stirring, can be obtained required phosphating solution.
Compared with prior art, the invention has the following beneficial effects: the inner wall of oil tank anti-corrosion spray method, pass through increase
Phosphorating treatment applies pre-treatment, so that inner wall of oil tank and coating completely attach to, effectively prevent inner wall of oil tank by local corrosion, makes simultaneously
Priming paint enhances in the adhesion strength of tank surface, is then sprayed by multilayer, so that inner wall of oil tank anti-corrosion coating is combined
Protection, can effectively prevent inner wall of oil tank to corrode, and coating quality is high, paint not easily to fall off after spraying, and the anti-corrosion time is long, mentions
The service life of oil tank is greatly increased while high anti-corrosion effect, and there is better prospect of the application.
Specific embodiment
To be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, below with reference to
Specific embodiment, the present invention is further explained.
A kind of inner wall of oil tank anti-corrosion spray method of the invention when work, first starts the cleaning processing the inner wall of oil tank,
First the trapped fuel in oil tank is excluded, ventilation opening is opened and excludes oil gas in tank, and measure gas concentration to safe range, then
Staff cleans greasy dirt, water and other sediments into tank broom or wooden tool, and with device for cleaning tank equipment to inner wall of oil tank
Carry out hydroblasting, the inner wall of oil tank after being cleaned；The inner wall of oil tank after cleaning is then subjected to surfacing processing, first
It derusts, inner wall of oil tank is sprayed using pickling technique of derusting, Shi Changwei 80-120min, carry out clear water punching after excluding acid solution
It washes, Shi Changyue 15-20min, the draining-off sewage when flushing liquor is neutral, carries out Passivation Treatment twice, when first time is about 3-
5min, second when, are about 5-8min, 5-10min are waited after 2 passivation, then use 290Kpa pressure flush of water 8-12min, exclusion
Flushing water, after next roots out the old paint in inner wall of oil tank surface, aeration-drying, the inner wall of oil tank after obtaining inner wall finishing；Secondly will
Inner wall of oil tank after obtaining inner wall finishing checked, check oil tank interior fittings after oil tank is dry, and to having corroded
Accessory is updated replacement, obtains the inner wall of oil tank of inner wall non-corroding；The inner wall of oil tank for obtaining inner wall non-corroding is subjected to phosphorus again
Change processing carries out phosphorating treatment to inner wall of oil tank using phosphating solution, inner wall of oil tank surface is made to form phosphating coat and completely cut off air,
Described in phosphating solution formula be using the water of 500-800mL as solvent, zinc oxide 25g/L, nickel nitrate 20g/L, phosphoric acid 35g/L,
Nitric acid 10-15g/L, film layer improver 1.5-2.5g/L, the preparation method of phosphating solution be by the phosphoric acid of precise respective volume,
Nitric acid is added in the glass container of clean dried, and addition Zinc oxide powder stirring successively adds later until zinc oxide dissolution is completely
Enter nickel nitrate and the stirring of film layer improver, makes it completely dissolved, water can be slowly added to later and be diluted stirring, can be obtained institute
Phosphating solution is needed, each position 300-350mm of inner wall of oil tank margin plate secondly should be done into reinforcement anti-corrosion spray, obtained phosphating solution spraying
On inner wall of oil tank surface, protection is provided to inner wall of oil tank, prevents inner wall of oil tank to be corroded, the inner wall of oil tank after obtaining anti-corrosion；Most
The inner wall of oil tank after anti-corrosion will be obtained afterwards to spray, and first red lead primer is sprayed on inner wall of oil tank outer surface and brushes three repeatedly
Road, red lead primer by red lead, alkyd resin, rust resisting pigment, filler, auxiliary agent, solvent etc. form from dry antirusting paint, drying
Non-solvent epoxy priming paint is sprayed again in 1-2.5h afterwards, brushes four repeatedly, again by epoxy glass flake in 3-5h after drying
Coating is sprayed again, brushes six repeatedly, dries 2h-3h again, and environment temperature is most preferably 15-35 DEG C when spraying, drying temperature
Degree is 50-70 DEG C, and relative air humidity is not more than 65%, coating thickness 50-60um, the intermediate coat coating thickness 150- of priming paint
180um, finishing coat coating thickness 130-150um, can be completed inner wall of oil tank anti-corrosion spray method, it is good to obtain anticorrosion with painting effect
Inner wall of oil tank.
Embodiment 1
When spraying, first the inner wall of oil tank is started the cleaning processing, first excludes the trapped fuel in oil tank, opens ventilation opening
Oil gas in tank is excluded, and measures gas concentration to safe range, then staff cleans oil into tank broom or wooden tool
Dirty, water and other sediments, and hydroblasting is carried out to inner wall of oil tank with device for cleaning tank equipment, the inner wall of oil tank after being cleaned；
Then by after cleaning inner wall of oil tank carry out surfacing processing, derust first, using pickling derust technique to inner wall of oil tank into
Row injection, Shi Changwei 80min carry out clear water flushing after excluding acid solution, and Shi Changyue 15min is excluded dirty when flushing liquor is neutral
Water, carries out Passivation Treatment twice, and when first time is about 3min, and second when is about 8min, waits 5min after 2 passivation, then use
290Kpa pressure flush of water 8min excludes flushing water, and after next roots out the old paint in inner wall of oil tank surface, aeration-drying is obtained interior
Inner wall of oil tank after wall finishing；Secondly the inner wall of oil tank after inner wall is modified will be obtained to check, check oil after oil tank is dry
Tank interior fittings, and replacement is updated to the accessory corroded, obtain the inner wall of oil tank of inner wall non-corroding；In obtaining again
The inner wall of oil tank of wall non-corroding carries out phosphorating treatment, carries out phosphorating treatment to inner wall of oil tank using phosphating solution, makes inner wall of oil tank table
Face forms phosphating coat and completely cuts off air, wherein the formula of the phosphating solution is the zinc oxide 25g/L using the water of 500mL as solvent, nitre
Sour nickel 20g/L, phosphoric acid 35g/L, nitric acid 10g/L, film layer improver 1.5g/L, the preparation method of phosphating solution are by precise phase
It answers the phosphoric acid of volume, nitric acid to be added in the glass container of clean dried, Zinc oxide powder stirring is added, until zinc oxide has dissolved
Entirely, nickel nitrate and the stirring of film layer improver are sequentially added later, is made it completely dissolved, and can be slowly added to water later and be diluted stir
It mixes, can be obtained required phosphating solution, each position 300mm of inner wall of oil tank margin plate secondly should be done into reinforcement anti-corrosion spray, obtained
Phosphating solution is sprayed on inner wall of oil tank surface, provides protection to inner wall of oil tank, prevents inner wall of oil tank to be corroded, the oil after obtaining anti-corrosion
Top tank structure；The inner wall of oil tank after anti-corrosion will finally be obtained to spray, first red lead primer is sprayed on inner wall of oil tank outer surface
Three are brushed repeatedly, the certainly dry antirust that red lead primer is made of red lead, alkyd resin, rust resisting pigment, filler, auxiliary agent, solvent etc.
Coating again sprays non-solvent epoxy priming paint in 1h after drying, brushes four repeatedly, again by expoxy glass squama in 3h after drying
Piece coating is sprayed again, brushes six repeatedly, dries 2h again, and environment temperature is most preferably 20 DEG C when spraying, and drying temperature is
55 DEG C, relative air humidity is not more than 65%, and the coating thickness 50um of priming paint, intermediate coat coating thickness 150um, finishing coat spraying are thick
130um is spent, inner wall of oil tank anti-corrosion spray method can be completed；
Take inner wall of oil tank sample to be put into industrial atmosphere and stand 36h, through observing, the inner wall of oil tank surface without any rusty stain,
Tank inner wall coating is with a thickness of 2.5mm.
Embodiment 2
When spraying, the inner wall of oil tank is started the cleaning processing first, first excludes the trapped fuel in oil tank, opens ventilation
Mouth excludes oil gas in tank, and measures gas concentration to safe range, and then staff cleans into tank broom or wooden tool
Greasy dirt, water and other sediments, and hydroblasting is carried out to inner wall of oil tank with device for cleaning tank equipment, in the oil tank after being cleaned
Wall；The inner wall of oil tank after cleaning is then subjected to surfacing processing, derusts first, derusts technique to inner wall of oil tank using pickling
It is sprayed, Shi Changwei 120min, carries out clear water flushing after excluding acid solution, Shi Changyue 20min is excluded when flushing liquor is neutral
Sewage, carries out Passivation Treatment twice, and when first time is about 5min, and second when is about 8min, waits 10min after 2 passivation, then
With 290Kpa pressure flush of water 12min, flushing water is excluded, after next roots out the old paint in inner wall of oil tank surface, aeration-drying is obtained
Inner wall of oil tank after inner wall finishing；Secondly the inner wall of oil tank after inner wall is modified will be obtained to check, checked after oil tank is dry
Oil tank interior fittings, and replacement is updated to the accessory corroded, obtain the inner wall of oil tank of inner wall non-corroding；It will obtain again
The inner wall of oil tank of inner wall non-corroding carries out phosphorating treatment, carries out phosphorating treatment to inner wall of oil tank using phosphating solution, makes inner wall of oil tank
Surface forms phosphating coat and completely cuts off air, wherein the formula of the phosphating solution is the zinc oxide 25g/L using the water of 800mL as solvent,
Nickel nitrate 20g/L, phosphoric acid 35g/L, nitric acid 15g/L, film layer improver 2.5g/L, the preparation method of phosphating solution are by precise
Phosphoric acid, the nitric acid of respective volume are added in the glass container of clean dried, and Zinc oxide powder stirring is added, until zinc oxide dissolves
Completely, nickel nitrate and the stirring of film layer improver are sequentially added later, are made it completely dissolved, can be slowly added to water later and be diluted
Stirring, can be obtained required phosphating solution, and each position 350mm of inner wall of oil tank margin plate secondly should be done reinforcement anti-corrosion spray, obtained
Phosphating solution be sprayed on inner wall of oil tank surface, give inner wall of oil tank provide protection, prevent inner wall of oil tank to be corroded, after obtaining anti-corrosion
Inner wall of oil tank；The inner wall of oil tank after anti-corrosion will finally be obtained to spray, red lead primer is first sprayed on inner wall of oil tank outer surface
On brush three repeatedly, red lead primer by red lead, alkyd resin, rust resisting pigment, filler, auxiliary agent, solvent etc. form from dry anti-
Become rusty coating, again sprays non-solvent epoxy priming paint in 2.5h after drying, brushes four repeatedly, again by epoxy glass in 5h after drying
Glass flake paint is sprayed again, brushes six repeatedly, dries 3h again, and environment temperature is most preferably 35 DEG C when spraying, drying temperature
Degree is 70 DEG C, and relative air humidity is not more than 65%, the coating thickness 60um of priming paint, intermediate coat coating thickness 180um, finishing coat spray
Thickness 150um is applied, inner wall of oil tank anti-corrosion spray method can be completed；
It takes inner wall of oil tank sample to be put into the acid solution that pH value is 5.5 and stands 36h, through observing, the inner wall of oil tank table
Face is without any rusty stain, and tank inner wall coating is with a thickness of 2.6mm.
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (5)
1. a kind of inner wall of oil tank anti-corrosion spray method, which is characterized in that the inner wall of oil tank anti-corrosion spray method the following steps are included:
Step 1: the inner wall of oil tank is started the cleaning processing, first the trapped fuel in oil tank is excluded, ventilation opening is opened and excludes tank
Interior oil gas, and measure gas concentration to safe range, then staff into tank broom or wooden tool clean greasy dirt, water and
Other sediments, and hydroblasting is carried out to inner wall of oil tank with device for cleaning tank equipment, the inner wall of oil tank after being cleaned；
Step 2: the inner wall of oil tank after cleaning is carried out surfacing processing, derusts first, derust technique to oil tank using pickling
Inner wall is sprayed, Shi Changwei 80-120min, carries out clear water flushing, Shi Changyue 15-20min, when flushing liquor is after excluding acid solution
Draining-off sewage when neutral, carries out Passivation Treatment twice, and when first time is about 3-5min, and second when is about 5-8min, 2 passivation
After wait 5-10min, then with 290Kpa pressure flush of water 8-12min, exclude flushing water, next roots out the old oil in inner wall of oil tank surface
Qi Hou, aeration-drying, the inner wall of oil tank after obtaining inner wall finishing；
Step 3: checking the inner wall of oil tank after inner wall is modified is obtained, oil tank interior fittings are checked after oil tank is dry, and
Replacement is updated to the accessory corroded, obtains the inner wall of oil tank of inner wall non-corroding；
Step 4: the inner wall of oil tank for obtaining inner wall non-corroding is carried out phosphorating treatment, phosphorus is carried out to inner wall of oil tank using phosphating solution
Change processing, makes inner wall of oil tank surface form phosphating coat and completely cut off air, wherein the formula of the phosphating solution is with 500-800mL's
Water is solvent, zinc oxide 25g/L, nickel nitrate 20g/L, phosphoric acid 35g/L, nitric acid 10-15g/L, film layer improver 1.5-2.5g/L,
Secondly each position 300-350mm of inner wall of oil tank margin plate should be done into reinforcement anti-corrosion spray, obtained phosphating solution is sprayed in oil tank
Wall surface provides protection to inner wall of oil tank, prevents inner wall of oil tank to be corroded, the inner wall of oil tank after obtaining anti-corrosion；
Step 5: being sprayed the inner wall of oil tank after anti-corrosion is obtained, first red lead primer is sprayed on inner wall of oil tank outer surface
Three are brushed, again sprays non-solvent epoxy priming paint in 1-2.5h after drying, brushes four repeatedly, again by ring in 3-5h after drying
Oxygen glass-flake coating is sprayed again, is brushed six repeatedly, is dried 2h-3h again, and inner wall of oil tank anti-corrosion spray can be completed
Method obtains the good inner wall of oil tank of anticorrosion with painting effect.
2. a kind of inner wall of oil tank anti-corrosion spray method according to claim 1, it is characterised in that: red lead primer is by red
The compositions such as pellet, alkyd resin, rust resisting pigment, filler, auxiliary agent, solvent from dry antirusting paint.
3. a kind of inner wall of oil tank anti-corrosion spray method according to claim 1, it is characterised in that: environment temperature is most when spraying
Preferably 15-35 DEG C, drying temperature is 50-70 DEG C, and relative air humidity is not more than 65%.
4. a kind of inner wall of oil tank anti-corrosion spray method according to claim 1, it is characterised in that: the coating thickness of priming paint
50-60um, intermediate coat coating thickness 150-180um, finishing coat coating thickness 130-150um.
5. a kind of inner wall of oil tank anti-corrosion spray method according to claim 1, it is characterised in that: the preparation of the phosphating solution
Method are as follows: the phosphoric acid of precise respective volume, nitric acid are added in the glass container of clean dried, Zinc oxide powder is added and stirs
It mixes, until zinc oxide dissolution is completely, sequentially adds nickel nitrate and the stirring of film layer improver later, make it completely dissolved, Zhi Houke
It is slowly added to water and is diluted stirring, can be obtained required phosphating solution.
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| CN110919301A (en) * | 2019-12-05 | 2020-03-27 | 四川石油天然气建设工程有限责任公司 | Preparation method of drilling fluid storage tank |
| CN110919301B (en) * | 2019-12-05 | 2021-08-06 | 四川石油天然气建设工程有限责任公司 | Preparation method of drilling fluid storage tank |
| CN112620046A (en) * | 2020-12-17 | 2021-04-09 | 建湖县永维阀门钻件有限公司 | Anti-corrosion process of marine drilling riser |
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Application publication date: 20191011 |