CN108220936A - A kind of steel surface derusting phosphating method of environmental protection - Google Patents
A kind of steel surface derusting phosphating method of environmental protection Download PDFInfo
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- CN108220936A CN108220936A CN201711470547.8A CN201711470547A CN108220936A CN 108220936 A CN108220936 A CN 108220936A CN 201711470547 A CN201711470547 A CN 201711470547A CN 108220936 A CN108220936 A CN 108220936A
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- derusting phosphating
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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
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/07—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing phosphates
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B25/00—Phosphorus; Compounds thereof
- C01B25/16—Oxyacids of phosphorus; Salts thereof
- C01B25/26—Phosphates
- C01B25/37—Phosphates of heavy metals
- C01B25/375—Phosphates of heavy metals of iron
-
- 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
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/78—Pretreatment of the material to be coated
-
- 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
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/86—Regeneration of coating baths
Abstract
The problem of present invention is for the raising of cost existing for derusting phosphating method in the prior art, a large amount of water of consumption and waste residue recycling trouble provides a kind of steel surface derusting phosphating method of environmental protection.This method completes the derusting phosphating work of workpiece surface by ungrease treatment, the processing of first time derusting phosphating, second of derusting phosphating processing and acid solution recycling step.This method can realize that high concentration derusting phosphating liquor is in persistent loop flow regime, and the byproduct of generation is filtered out coming at any time, is converted into ferric phosphate, makes workpiece derusting phosphating in work nest in stable condition, and do not generate waste water.
Description
Technical field
The invention belongs to steel surface processing technology field, more particularly to a kind of steel surface derusting phosphating side of environmental protection
Method.
Background technology
Steel products will carry out derusting phosphating processing before spray painting, plating to surface at present, make one layer of its surface formation resistance to
The phosphating coat of oxidation.The prior art generally has the derusting phosphating on surface one-step method and two-step method, and one-step method, that is, derusting phosphating exists
It is carried out in one slot, due to there is waste residue generation in treatment fluid, the effect of alramenting, and used derusting phosphating can be influenced
Solution is abandoned as waste liquid；Two step method derusts and phosphatization is divided to two slots to carry out, it is necessary first to pass through various acid pickling and rust removing processes, go
Except the iron scale on its surface, in order to clean remaining acid also with alkali neutralization and be cleaned with a large amount of water, Ran Houjin after derusting
Row phosphorating treatment, but acid pickling and rust removing is handled using chemical methodes such as hydrochloric acid, sulfuric acid and nitration mixture, the actual production in descaling process
When it is complicated for operation, generate the pollution problems such as acid mist and acid pickle.And one-step method or two-step method can cause cost
It improves, consume the problem of a large amount of water and waste residue recycling trouble.
Invention content
The present invention is recycled for the raising of cost existing for derusting phosphating method in the prior art, a large amount of water of consumption and waste residue
The problem of trouble, provides a kind of steel surface derusting phosphating method of environmental protection.This method can realize high concentration derusting phosphating liquor
In persistent loop flow regime, the byproduct of generation is filtered out coming at any time, is converted into ferric phosphate, makes work in work nest
Part derusting phosphating is in stable condition, and does not generate waste water.
A kind of steel surface derusting phosphating method of environmental protection, includes the following steps：
1) ungrease treatment
Pending iron and steel parts are immersed in the degreaser containing acid and surfactant, remove the grease of workpiece surface
Class impurity, meanwhile, degreaser filters；The principle of the process is to utilize acid and the oil of removal of surfactant workpiece surface
Fat；
Wherein, ungrease treatment time 5-30min, 15~70 DEG C of degreaser temperature, and pass through and add in acid solution and surface-active
Agent controls degreaser pH value range 1~3；
The acid and surfactant is the acid and surfactant in existing derusting phosphating agent；
2) first time derusting phosphating is handled
Workpiece of the degreasing rear surface with degreaser is from top to bottom immersed into once removing containing high concentration derusting phosphating agent
It becomes rusty in phosphating solution, the liquid flow path direction of solution is also for from top to bottom, the flowing of derusting phosphating solution is washed away workpiece surface and removed simultaneously
Scale on surface simultaneously forms initial stage phosphating coat；Meanwhile filter out the waste residue in derusting phosphating solution at any time, it prevents from influencing phosphatization
The formation of film；
Wherein, first time derusting phosphating 15~35min of processing time, 15~60 DEG C of a derusting phosphating solution temperature, and
The pH value range 0~2.5 of a derusting phosphating solution is controlled by adding in derusting phosphating agent；
The derusting phosphating agent is existing derusting phosphating agent, and used acid is identical with the acid in step 1)；
Preferably, surfactant is not contained in the derusting phosphating agent, surfactant adds in step 1), you can
To improve the degreasing effect in step 1), and the surfactant for being attached to workpiece surface can be made to enter primary derusting in workpiece
It uses as the surfactant in derusting phosphating agent to improve derusting phosphating effect during phosphating solution；
Preferably, the waste residue generates ferric phosphate after hydrogen peroxide is directly added into after filtering out, and is used for other industry, reaction side
Formula is as follows：
2Fe2++H2O2+2H+=2Fe3++2H2O (1)
Fe3++PO4 3-=FePO4 (2)
3) second of derusting phosphating processing
By after first time derusting phosphating, the workpiece of surface band once derusting phosphating solution from top to bottom immersed containing low dense
It spends in the secondary rust removal phosphating solution of derusting phosphating agent, the liquid flow path direction of solution is from top to bottom, derusting phosphating liquor flowing is washed away
Workpiece surface is thoroughly to remove the iron scale of workpiece surface and workpiece surface is made to form complete phosphating coat；Further, since derusting
Phosphorating treatment workpiece can consume the derusting phosphating agent in slot, while the solution that workpiece surface is brought by previous process can increase slot
Middle derusting phosphating agent, so as to which the derusting phosphating dosage form in slot be made to be balanced into disengaging；
Wherein, the processing time of second of derusting phosphating be 5~30min, 15~60 DEG C of secondary rust removal phosphating solution temperature,
The pH value range 0.5~3.0 of secondary rust removal phosphating solution；
Used derusting phosphating agent is identical with the derusting phosphating agent of step 2)；
4) acid solution recycles
It is cleaned in the sink that workpiece immersion of second of derusting phosphating rear surface with secondary rust removal phosphating solution is filled with water,
To remove the remaining derusting phosphating agent of workpiece surface, workpiece is taken out into drying after cleaning；
Since workpiece surface carries secondary rust removal phosphating solution, it is continuously increased water and the derusting phosphating agent in sink,
By adding in clear water dilution to control pH value >=5.5 of water trough inner water, and water extra in sink is discharged；
Preferably, cleaning coolant-temperature gage is at 60 DEG C or more；
Preferably, water discharge extra in sink is transported to step 1), 2) is reused with 3) middle.
Compared with prior art, advantage of the invention is that：
1st, method of the invention is since high-concentration and low-concentration derusting phosphating liquor is always in flow regime from top to bottom, Neng Gouquan
Face to iron and steel sheet and plate surface derusting phosphatization, ensure that the effect of alramenting.
2nd, the byproduct that method of the invention is generated during derusting phosphating due to high concentration derusting phosphating liquor at any time by
It filters out, makes derusting phosphating in work nest in stable condition so that derusting phosphating liquor can be reused, and not generate waste liquid；And
And the byproduct being filtered out is converted into ferric phosphate after device processing is recovered by filtration in tailings and is used for other industry, no
Generate waste residue.
3rd, method of the invention rotates back into degreasing, first due to the water containing derusting phosphating agent that acid solution recovery process generates
It is used in secondary derusting phosphating and second of derusting phosphating step, no discharging of waste liquid really eliminates spent acid, waste water etc. to environment
Pollution.
4th, the surfactant that routine is launched in derusting phosphating step is changed into defatting step and launched by method of the invention,
Degreasing effect is improved, and has saved surfactant.
Description of the drawings
Process flow chart in Fig. 1, the embodiment of the present invention 1.
Specific embodiment
The derusting phosphating agent prescription used in following embodiment is the formula described in ZL 2013102925604.
Embodiment 1
A kind of surface of steel plate derusting phosphating method, flow is as shown in Figure 1, include the following steps：
1) ungrease treatment
Pending steel plate is immersed in the degreaser containing phosphoric acid and hexadecyltrimethylammonium chloride, removes steel plate table
The grease type impurity in face, meanwhile, degreaser filters；Solution ph range 1~2 in degreaser, 15~20 DEG C of skimming temp,
20~30min of degreasing time；The solid-to-liquid ratio of the hexadecyltrimethylammonium chloride and degreaser is 1:250~333.3kg/L；
2) first time derusting phosphating is handled
Steel plate of the degreasing rear surface with degreaser is from top to bottom immersed into once removing containing high concentration derusting phosphating agent
It becomes rusty in phosphating solution, the liquid flow path direction of solution is also for from top to bottom, the flowing of derusting phosphating solution is washed away surface of steel plate and removed simultaneously
Scale on surface simultaneously forms initial stage phosphating coat, and the mass fraction ratio of derusting phosphating agent component is 3 parts of phosphatase 79, citric acid one
2 parts of hydrate, 3 parts of trbasic zinc phosphate, 1.85 parts of calcium phosphate, and since surface of steel plate is with surfactant, in derusting phosphating agent
Need not add in surfactant in formula, and the surfactant that surface of steel plate carries can with derusting phosphating agent collective effect,
Form complete phosphating coat；Meanwhile filter out the waste residue in derusting phosphating solution at any time, prevent from influencing the formation of phosphating coat；
The pH value range 0~0.5 of derusting phosphating solution, 15~20 DEG C for the treatment of temperature, 25~35min of processing time；
The waste residue generates ferric phosphate after adding in hydrogen peroxide after filtering out, and is used for other industry；
3) second of derusting phosphating processing
By after first time derusting phosphating, the steel plate of surface band once derusting phosphating solution from top to bottom immersed containing low dense
It spends in the secondary rust removal phosphating solution of derusting phosphating agent, the liquid flow path direction of solution is from top to bottom, derusting phosphating liquor flowing is washed away
Surface of steel plate is thoroughly to remove the iron scale of surface of steel plate and surface of steel plate is made to form complete phosphating coat, used derusting phosphorus
Agent is identical with the derusting phosphating agent of step 2)；Further, since derusting phosphating processing steel plate can consume the derusting phosphating agent in slot,
The solution that surface of steel plate is brought by previous process simultaneously can increase derusting phosphating agent in slot, so as to make the derusting phosphating agent in slot
Form disengaging balance；
Wherein, the pH value range 0.5~1.5 of the secondary rust removal phosphating solution, 15~20 DEG C for the treatment of temperature, during processing
Between 20~30min；
4) acid solution recycles
Steel plate of second of derusting phosphating rear surface with secondary rust removal phosphating solution is immersed into the cleaning that temperature is room temperature
In water, to remove the remaining derusting phosphating agent of surface of steel plate, and sprayed after the steel plate after cleaning is dried with hair-dryer for follow-up
Paint, electroplating processes；Since surface of steel plate is with secondary rust removal phosphating solution, water and the derusting phosphating agent in ejected wash water is made constantly to increase
Add, by add in clear water dilution to control pH value >=5.5 of ejected wash water, and discharge extra ejected wash water, due to step 1), 2) and
3) liquid in can be carried away by steel plate and generate consumption, and the extra ejected wash water containing derusting phosphating agent is transported to step
1) it is reused in, 2) He 3).
In the prior art, handling the ejected wash water of primary, secondary rust removal phosphating solution and the agent containing derusting phosphating needs largely
Expense simultaneously generates a large amount of waste water, waste liquid and waste residue, method through this embodiment, and no waste water, waste liquid and waste residue generate.
Embodiment 2
A kind of steel construction piece surface derusting method for bonderizing, includes the following steps：
1) ungrease treatment
Pending steel construction piece is immersed in the degreaser containing phosphoric acid and hexadecyltrimethylammonium chloride, removes steel
The grease type impurity of structural member surface, meanwhile, degreaser filters；Solution ph range 2.5~3 in degreaser, degreasing temperature
65~70 DEG C of degree, degreasing time 5-10min；The solid-to-liquid ratio of the hexadecyltrimethylammonium chloride and degreaser is 1:66.7~
150kg/L；
2) first time derusting phosphating is handled
Steel construction piece of the degreasing rear surface with degreaser is from top to bottom immersed to one containing high concentration derusting phosphating agent
In secondary derusting phosphating solution, the liquid flow path direction of solution is also for from top to bottom, steel construction piece surface is washed away in the flowing of derusting phosphating solution
It removes scale on surface simultaneously and forms initial stage phosphating coat, the mass fraction ratio of derusting phosphating agent component is 3 parts of phosphatase 79,
Citric acid monohydrate closes 2 parts of object, 3 parts of trbasic zinc phosphate, 1.85 parts of calcium phosphate, and since steel construction piece surface carries surfactant,
Surfactant need not be added in derusting phosphating agent prescription, and the surfactant that steel construction piece surface carries can be with derusting
Bonderite collective effect forms complete phosphating coat；Meanwhile filter out the waste residue in derusting phosphating solution at any time, it prevents from influencing
The formation of phosphating coat；
Wherein, the pH value range 2~2.5 of a derusting phosphating solution, 55~60 DEG C for the treatment of temperature, processing time
15~20min；
Waste residue generates ferric phosphate after adding in hydrogen peroxide, is used for other industry；
3) second of derusting phosphating processing
By after first time derusting phosphating, the steel construction piece of surface band once derusting phosphating solution from top to bottom immerse containing
In the secondary rust removal phosphating solution of low concentration derusting phosphating agent, the liquid flow path direction of solution is from top to bottom, derusting phosphating liquor flows
Steel construction piece surface is washed away thoroughly to remove the iron scale on steel construction piece surface and steel construction piece surface is made to form complete phosphatization
Film, used derusting phosphating agent are identical with the derusting phosphating agent of step 2)；Further, since derusting phosphating handles steel construction piece meeting
The derusting phosphating agent in slot is consumed, while the solution that steel construction piece surface is brought by previous process can increase derusting phosphating in slot
Agent, so as to which the derusting phosphating dosage form in slot be made to be balanced into disengaging；
Wherein, the pH value range 2.5~3.0 of the secondary rust removal phosphating solution, 55~60 DEG C for the treatment of temperature, during processing
Between 5~10min；
The derusting phosphating agent is identical with the derusting phosphating agent of step 2)；
4) acid solution recycles
Steel construction piece of second of derusting phosphating rear surface with secondary rust removal phosphating solution is immersed into 75~80 DEG C of water temperature
In ejected wash water, to remove the derusting phosphating agent of steel construction piece remained on surface, since cleaning water temperature is high, steel construction piece is from ejected wash water
The water for taking out rear surface evaporates rapidly, without additionally drying, you can for subsequent paint, plating；Due to steel construction piece surface band
There is secondary rust removal phosphating solution, be continuously increased water and the derusting phosphating agent in ejected wash water, dilute to control by adding in clear water
PH value >=5.5 of ejected wash water, and discharge extra ejected wash water, due to step 1), 2) and 3) in liquid can be carried away by steel plate
And consumption is generated, the extra ejected wash water containing derusting phosphating agent is transported to step 1), 2) is reused with 3) middle.
Method through this embodiment, no waste water, waste liquid and waste residue generate.
Embodiment 3
A kind of wire surface derusting phosphating method, includes the following steps：
1) ungrease treatment
Pending steel plate is immersed in the degreaser containing phosphoric acid and hexadecyltrimethylammonium chloride, removes workpiece table
The grease type impurity in face, meanwhile, degreaser filters；Solution ph range 1.5~2.5 in degreaser, skimming temp 40~
45 DEG C, 15~20min of degreasing time；The solid-to-liquid ratio of the hexadecyltrimethylammonium chloride and degreaser is 1:150~
250kg/L；
2) first time derusting phosphating is handled
Steel construction piece of the degreasing rear surface with degreaser is from top to bottom immersed to one containing high concentration derusting phosphating agent
In secondary derusting phosphating solution, the liquid flow path direction of solution is also for from top to bottom, steel construction piece surface is washed away in the flowing of derusting phosphating solution
It removes scale on surface simultaneously and forms initial stage phosphating coat, the mass fraction ratio of derusting phosphating agent component is 3 parts of phosphatase 79,
Citric acid monohydrate closes 2 parts of object, 3 parts of trbasic zinc phosphate, 1.85 parts of calcium phosphate, and since steel construction piece surface carries surfactant,
Surfactant need not be added in derusting phosphating agent prescription, and the surfactant that steel construction piece surface carries can be with derusting
Bonderite collective effect forms complete phosphating coat；Meanwhile filter out the waste residue in derusting phosphating solution at any time, it prevents from influencing
The formation of phosphating coat；
Wherein, the pH value range 1~1.5 of a derusting phosphating solution, 35~40 DEG C for the treatment of temperature, processing time
20~25min；
Waste residue generates ferric phosphate after adding in hydrogen peroxide, is used for other industry；
3) second of derusting phosphating processing
By after first time derusting phosphating, the steel construction piece of surface band once derusting phosphating solution from top to bottom immerse containing
In the secondary rust removal phosphating solution of low concentration derusting phosphating agent, the liquid flow path direction of solution is from top to bottom, derusting phosphating liquor flows
Steel construction piece surface is washed away thoroughly to remove the iron scale on steel construction piece surface and steel construction piece surface is made to form complete phosphatization
Film, used derusting phosphating agent are identical with the derusting phosphating agent of step 2)；Further, since derusting phosphating handles steel construction piece meeting
The derusting phosphating agent in slot is consumed, while the solution that steel construction piece surface is brought by previous process can increase derusting phosphating in slot
Agent, so as to which the derusting phosphating dosage form in slot be made to be balanced into disengaging；
Wherein, the pH value range 2~2.5 of the secondary rust removal phosphating solution, 35~40 DEG C for the treatment of temperature, processing time
15~20min；
The derusting phosphating agent is identical with the derusting phosphating agent of step 2)；
4) acid solution recycles
Workpiece of second of derusting phosphating rear surface with secondary rust removal phosphating solution is immersed in ejected wash water, to remove work
The derusting phosphating agent of part remained on surface, and it is used for follow-up drawing process after the steel plate after cleaning is dried up with hair-dryer；Due to work
Part surface carries secondary rust removal phosphating solution, is continuously increased water and the derusting phosphating agent in ejected wash water, dilute by adding in clear water
Release pH value >=5.5 to control ejected wash water, and discharge extra ejected wash water, due to step 1), 2) and 3) in liquid can be by steel
Plate carries away and generates consumption, and the extra ejected wash water containing derusting phosphating agent is transported to step 1), 2) repeats to make with 3) middle
With.
Method through this embodiment, no waste water, waste liquid and waste residue generate.
Claims (8)
1. a kind of steel surface derusting phosphating method of environmental protection, which is characterized in that include the following steps：
1) ungrease treatment
Pending iron and steel parts are immersed in the degreaser containing acid and surfactant, the grease type for removing workpiece surface is miscellaneous
Matter, meanwhile, to degreaser filters；
The acid and surfactant is the acid and surfactant in existing derusting phosphating agent；
2) first time derusting phosphating is handled
Workpiece of the degreasing rear surface with degreaser is from top to bottom immersed to the primary derusting phosphorus containing high concentration derusting phosphating agent
Change in solution, the liquid flow path direction of solution is also for from top to bottom, solution flowing washes away workpiece surface to remove scale on surface simultaneously
Formation initial stage phosphating coat；Also, the waste residue in derusting phosphating solution is filtered out at any time；
Wherein, the derusting phosphating agent is existing derusting phosphating agent, and used acid is identical with the acid in step 1)；
3) second of derusting phosphating processing
By after first time derusting phosphating, once the workpiece of derusting phosphating solution is from top to bottom immersed and is removed containing low concentration surface band
It becomes rusty in the secondary rust removal phosphating solution of bonderite, the liquid flow path direction of solution is also for from top to bottom, workpiece surface is washed away in solution flowing
Thoroughly to remove the iron scale of workpiece surface and workpiece surface made to form complete phosphating coat；
Further, since processing workpiece can consume derusting phosphating agent in slot, at the same workpiece surface brought by previous process it is molten
Liquid can increase derusting phosphating agent in slot, so as to which the derusting phosphating dosage form in slot be made to be balanced into disengaging；
Wherein, the derusting phosphating agent is identical with the derusting phosphating agent prescription of step 2)；
4) acid solution recycles
It is cleaned in the sink that workpiece immersion of second of derusting phosphating rear surface with secondary rust removal phosphating solution is filled with water, with clear
Except the remaining derusting phosphating agent of workpiece surface, workpiece is taken out into drying after cleaning；
Since workpiece surface is with secondary rust removal phosphating solution, water and the derusting phosphating agent in sink are continuously increased, is passed through
Clear water dilution is added in control pH value >=5.5 of water trough inner water, and water extra in sink is discharged.
A kind of 2. steel surface derusting phosphating method of environmental protection according to claim 1, which is characterized in that the step 1)
In, 5~30min of time of ungrease treatment, 15~70 DEG C of degreaser temperature, and pass through and add in acid solution and surfactant to control
Degreaser pH value is 1~3.
A kind of 3. steel surface derusting phosphating method of environmental protection according to claim 1, which is characterized in that the step 2)
In, 15~35min of time of first time derusting phosphating processing, 15~60 DEG C of a derusting phosphating solution temperature, and pass through addition
Derusting phosphating agent is to control the pH value of a derusting phosphating solution as 0~2.5.
4. a kind of steel surface derusting phosphating method of environmental protection according to claim 1, which is characterized in that in step 2),
Surfactant is not contained in the derusting phosphating agent.
5. a kind of steel surface derusting phosphating method of environmental protection according to claim 1, which is characterized in that in step 2),
The waste residue generates ferric phosphate after hydrogen peroxide is directly added into after filtering out, and is used for other industry.
6. a kind of steel surface derusting phosphating method of environmental protection according to claim 1, which is characterized in that in step 3),
The time of second derusting phosphating processing is 5~30min, 15~60 DEG C of secondary rust removal phosphating solution temperature, secondary rust removal phosphatization
The pH value of solution is 0.5~3.0.
7. a kind of steel surface derusting phosphating method of environmental protection according to claim 1, which is characterized in that in step 4),
Water temperature is at 60 DEG C or more in sink.
8. a kind of steel surface derusting phosphating method of environmental protection according to claim 1, which is characterized in that in step 4),
Water discharge extra in sink is transported to step 1), 2) is reused with 3) middle.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109852973A (en) * | 2019-01-18 | 2019-06-07 | 江苏久华环保科技股份有限公司 | A kind of steel surface derusting process |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201010692Y (en) * | 2007-03-20 | 2008-01-23 | 吐哈石油勘探开发指挥部机械厂 | Automatic ultrasonic cleaning and phosphorizing device for 8 grooves type oil casing joint |
| CN102430506A (en) * | 2011-12-15 | 2012-05-02 | 江苏腾奇电力设备科技有限公司 | Paint coating process for radiator cast |
| CN104746065A (en) * | 2015-04-23 | 2015-07-01 | 鸿运汽车有限公司 | Vehicle accessory surface phosphating process |
-
2017
- 2017-12-29 CN CN201711470547.8A patent/CN108220936A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201010692Y (en) * | 2007-03-20 | 2008-01-23 | 吐哈石油勘探开发指挥部机械厂 | Automatic ultrasonic cleaning and phosphorizing device for 8 grooves type oil casing joint |
| CN102430506A (en) * | 2011-12-15 | 2012-05-02 | 江苏腾奇电力设备科技有限公司 | Paint coating process for radiator cast |
| CN104746065A (en) * | 2015-04-23 | 2015-07-01 | 鸿运汽车有限公司 | Vehicle accessory surface phosphating process |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109852973A (en) * | 2019-01-18 | 2019-06-07 | 江苏久华环保科技股份有限公司 | A kind of steel surface derusting process |
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