CN110523604A - A kind of baking vanish method for anticorrosion treatment of Keelof green house steel pipe - Google Patents
A kind of baking vanish method for anticorrosion treatment of Keelof green house steel pipe Download PDFInfo
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- CN110523604A CN110523604A CN201910854334.8A CN201910854334A CN110523604A CN 110523604 A CN110523604 A CN 110523604A CN 201910854334 A CN201910854334 A CN 201910854334A CN 110523604 A CN110523604 A CN 110523604A
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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
- B05D3/02—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 baking
- B05D3/0254—After-treatment
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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
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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
- B05D3/12—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 mechanical means
-
- 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
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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
- 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
- B05D7/14—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 metal, e.g. car bodies
- B05D7/146—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 metal, e.g. car bodies to metallic pipes or tubes
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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
- C23C22/73—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 characterised by the process
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention discloses a kind of baking vanish method for anticorrosion treatment of Keelof green house steel pipe, belong to technical field of anticorrosion, comprising the following steps: surface preparation carries out derusting and phosphorating treatment to workpiece surface；Upper extension, workpiece is hung on hanger；Dedusting is dusted processing to the workpiece hung on hanger；Spraying, the workpiece surface spraying coating after dedusting；Baking first preheats the workpiece after spray painting using 80-150 DEG C of temperature, so that paint film levelling, then again toasts the workpiece after preheating using 180-190 DEG C of temperature, stoving of the paint is dry.Its simple process, easy to process, high production efficiency, the product antiseptic property produced are good.And mechanical properties are good, and impact strength 50Kg/cm applies strange no cracking；Cupping 6.0mm or more/extrusion per second 1mm；Adhesive force (hundred lattice) test, coating is without falling off；Resistance to bend(ing) 1mm2, 180 ° of bendings, coating free from flaw；High temperature resistant, resistance to acid and alkali, corrosion resistance are all preferable.
Description
Technical field
The invention belongs to technical field of anticorrosion, and in particular to a kind of baking vanish method for anticorrosion treatment of Keelof green house steel pipe.
Background technique
Greenhouse is generally used steel pipe and builds skeleton, since steel pipe is exposed for a long time outside, steel pipe is caused to get rusty easily,
Corrosion, it is therefore desirable to preservative treatment be carried out to steel pipe, be at present usually to carry out anti-corrosion, this side in one layer of paint of steel tube surface brush
Treated that steel pipe corrosion-proof performance is poor for formula, and service life is short.
Summary of the invention
A kind of baking vanish method for anticorrosion treatment for being designed to provide Keelof green house steel pipe of embodiment of the present invention, technique
Simply, convenient for production, high production efficiency, the product antiseptic property produced is good.
Embodiments of the present invention are achieved in that
Embodiments of the present invention provide a kind of baking vanish method for anticorrosion treatment of Keelof green house steel pipe, including following step
It is rapid:
S1: surface preparation carries out derusting and phosphorating treatment to workpiece surface；
S2: it is upper to hang, workpiece is hung on hanger；
S3: dedusting is dusted processing to the workpiece hung on hanger；
S4: spraying, the workpiece surface spraying coating after dedusting；
S5: baking first preheats the workpiece after spray painting using 80-150 DEG C of temperature, so that paint film levelling, then
The workpiece after preheating is toasted using 180-190 DEG C of temperature again, stoving of the paint is dry.
Preferably, in S1 step, surface preparation is mainly comprised the steps that
S11: oil removing uses the greasy dirt of lye removal workpiece surface；
S12: washing rinses the workpiece after oil removing using clear water；
S13: derusting removes the rusty scale of workpiece surface；
S14: table tune is neutralized the workpiece surface after derusting using lye or acid solution, so that workpiece surface is sour
Basicity is neutrality；
S15: phosphatization, by table tune, treated that workpiece is put into phosphate solution handles, so that workpiece surface is formed
One layer of phosphating coat；
S16: workpiece is dried in drying, so that workpiece surface is dry.
Preferably, in S13 step, using the oxide skin of depletion method, acid solution method, Mechanical Method or electrolysis method removal workpiece surface
Or rusty stain.
Preferably, in S15 step, the treatment temperature of phosphatization is 20-90 DEG C.
Preferably, in S15 step, high temperature phosphorization temperature is 70-90 DEG C, and middle temperature phosphating temperature is 50-70 DEG C, normal temperature phosphating
Temperature is 20-30 DEG C.
Preferably, before carrying out S2 step, rough grinding first is carried out to workpiece surface using 400# waterproof abrasive paper, is then made again
Smart polishing is carried out to workpiece with 800# waterproof abrasive paper.
Preferably, in S4 step, sprayed coating with a thickness of 50-150um.
Preferably, in S4 step, powder spraying is carried out to workpiece using Disk spraying equipment.
Preferably, after the completion of S4 step, workpiece is checked, if workpiece locally paint or paint less it is thin, to the position into
Row touch-up paint flows into subsequent processing if spraying workpiece is qualified.
Preferably, in S5 step, first the workpiece after spray painting is preheated using 120 DEG C of temperature, so that paint film stream
It is flat, then the workpiece after preheating is toasted using 185 DEG C of temperature again, stoving of the paint is dry.
The invention has the benefit that
The baking vanish method for anticorrosion treatment for the Keelof green house steel pipe that embodiment of the present invention provides, simple process, processing side
Just, high production efficiency, the product antiseptic property produced are good.And mechanical properties are good, and impact strength 50Kg/cm applies strange without tortoise
It splits；Cupping 6.0mm or more/extrusion per second 1mm；Adhesive force (hundred lattice) test, coating is without falling off；Resistance to bend(ing) 1mm2, 180 ° curved
Song, coating free from flaw；High temperature resistant, resistance to acid and alkali, corrosion resistance are all preferable.
Specific embodiment
To keep the purposes, technical schemes and advantages of embodiment of the present invention clearer, below to embodiment of the present invention
In technical solution be clearly and completely described, it is clear that described embodiment is some embodiments of the invention,
Rather than whole embodiment.
Embodiment 1
The embodiment of the present invention one provides a kind of baking vanish method for anticorrosion treatment of Keelof green house steel pipe, comprising the following steps:
S1: surface preparation carries out derusting and phosphorating treatment to workpiece surface；Purpose is good coating in order to obtain.
In this step, specific processing method is as follows: first using the greasy dirt of lye removal workpiece surface, lye can be used
Sodium hydroxide, sodium bicarbonate etc.；Then workpiece is cleaned using the clear water of flowing；Processing of rust removing is carried out to workpiece again, is removed
There are many ways to rust, be the prior art, such as soda solution grouting, acid solution method, Mechanical Method, and electrolysis method etc. can remove workpiece table
The oxide skin or rusty stain in face；Again to the workpiece carry out table after derusting after being cleaned using the clear water of flowing to the workpiece after derusting
It adjusts, table tune is to guarantee workpiece surface pH value as neutrality, and effect is to accelerate phosphatization speed, and refinement phosphatization crystallization increases
Add the crystalline temperature of phosphatization, therefore, when derusting using soda solution grouting to workpiece, then table tune is carried out to workpiece using acid solution, when
When derusting using acid solution method to workpiece, then table tune is carried out to workpiece using lye；Reason is mediated to table using the clear water of flowing
Workpiece afterwards places into after being cleaned carries out phosphorating treatment in phosphate solution, so that workpiece surface forms one layer of phosphating coat,
Phosphating coat has the compact texture of tiny holes, can increase workpiece surface product in this way, can increase coating layer touch area, make
Generated between phosphating coat and coating it is advantageous interpenetrate, greatly improve organic coating to the adhesive force of workpiece, and phosphatization institute
The phosphating coat of formation is one layer of stable nonconducting separation layer, and metal surface is made to become non-conductor from excellence conductor, is inhibited
Micro cell is formed, and coating corrosion is effectively prevented, and phosphatization uses high temperature phosphorization phosphatization temperature for 70-90 DEG C, and preferably 80 DEG C；Most
Drying and processing is carried out after cleaning afterwards using clear water to the workpiece after phosphorating treatment, so that workpiece surface is dry.
S2: it is upper to hang, qualified workpiece is hung on hanger；
It should be noted that can also polish workpiece before upper extension, first using 400# waterproof abrasive paper to workpiece surface into
Then row rough grinding reuses 800# waterproof abrasive paper and carries out smart polishing to workpiece, the purpose is to remove surface particulate inclusions and increase
Certain roughness is to increase paint adhesion.
S3: dedusting is dusted processing to the workpiece hung on hanger；Processing can be dusted using compressed air,
Processing can also be dusted using electrostatic precipitation rifle, processing can also be dusted using flame combustion.
S4: spraying, the workpiece surface spraying coating after dedusting；In the present embodiment, using Disk spraying equipment to workpiece
Powder spraying is carried out, the capstan revolving speed of Disk spraying equipment is 5000-60000r/min, operating voltage 70-120KV；Spraying
Coating with a thickness of 50-150um, preferably coating thickness is 80um.
It should be noted that spraying after the completion of also need to check workpiece, if workpiece locally paint or paint less it is thin, it is right
The position carries out touch-up paint, if spraying workpiece is qualified, flows into subsequent processing.
It should also be noted that, it is fine powder state that powder spraying, which is exactly coating, workpiece is attached to by electrostatic interaction, is passed through
When high temperature ovens, coating melting, levelling, and crosslinking curing；VOC content is zero, and coating is recyclable, and utilization rate is up to 99%
More than.
S5: baking first preheats the workpiece after spray painting using 120 DEG C of temperature, so that solvent portion is evaporated, paint film
Then levelling again toasts the workpiece after preheating using 185 DEG C of temperature, stoving of the paint is dry.To production after drying
Product are checked, qualified product is removed and is packed and stored.
Performance indexes testing result using the steel pipe of above method processing is as follows:
Mechanical properties: impact strength 50Kg/cm applies strange no cracking；Cupping 6.0mm or more/extrusion per second 1mm；Adhesive force
(hundred lattice) test, coating is without falling off；Resistance to bend(ing) 1mm2, 180 ° of bendings, coating free from flaw；Pencil hardness 2H allows slight trace
Mark；
Chemical property: boiling water resistance impregnates 1 hour in boiled water, without exception；Alkali resistance 5%NaOH, 240 hours without change
Change；Acid resistance 3%HCL, 240 hours unchanged；Solvent resistance, dimethylbenzene, 24 hours unchanged；Stain resistance, lipstick, room temperature
Lower 24 hours without exception；
Heat resistance: 180 DEG C x l hours, color difference E < 0.8, gloss retention is excellent；
Corrosion resistance: salt fog resistance 1000 hours unchanged；Humidity resistance 500 hours unchanged.
Embodiment 2
Second embodiment of the present invention provides a kind of baking vanish method for anticorrosion treatment of Keelof green house steel pipe, comprising the following steps:
S1: surface preparation carries out derusting and phosphorating treatment to workpiece surface；Purpose is good coating in order to obtain.
In this step, specific processing method is as follows: first using the greasy dirt of lye removal workpiece surface, lye can be used
Sodium hydroxide, sodium bicarbonate etc.；Then workpiece is cleaned using the clear water of flowing；Processing of rust removing is carried out to workpiece again, is removed
There are many ways to rust, be the prior art, such as soda solution grouting, acid solution method, Mechanical Method, and electrolysis method etc. can remove workpiece table
The oxide skin or rusty stain in face；Again to the workpiece carry out table after derusting after being cleaned using the clear water of flowing to the workpiece after derusting
It adjusts, table tune is to guarantee workpiece surface pH value as neutrality, and effect is to accelerate phosphatization speed, and refinement phosphatization crystallization increases
Add the crystalline temperature of phosphatization, therefore, when derusting using soda solution grouting to workpiece, then table tune is carried out to workpiece using acid solution, when
When derusting using acid solution method to workpiece, then table tune is carried out to workpiece using lye；Reason is mediated to table using the clear water of flowing
Workpiece afterwards places into after being cleaned carries out phosphorating treatment in phosphate solution, so that workpiece surface forms one layer of phosphating coat,
Phosphating coat has the compact texture of tiny holes, can increase workpiece surface product in this way, can increase coating layer touch area, make
Generated between phosphating coat and coating it is advantageous interpenetrate, greatly improve organic coating to the adhesive force of workpiece, and phosphatization institute
The phosphating coat of formation is one layer of stable nonconducting separation layer, and metal surface is made to become non-conductor from excellence conductor, is inhibited
Micro cell is formed, and coating corrosion is effectively prevented, and phosphatization uses middle temperature phosphating, and phosphatization temperature is 50-70 DEG C, preferably 60 DEG C；
Drying and processing is carried out after finally cleaning using clear water to the workpiece after phosphorating treatment, so that workpiece surface is dry.
S2: it is upper to hang, qualified workpiece is hung on hanger；
It should be noted that can also polish workpiece before upper extension, first using 400# waterproof abrasive paper to workpiece surface into
Then row rough grinding reuses 800# waterproof abrasive paper and carries out smart polishing to workpiece, the purpose is to remove surface particulate inclusions and increase
Certain roughness is to increase paint adhesion.
S3: dedusting is dusted processing to the workpiece hung on hanger；Processing can be dusted using compressed air,
Processing can also be dusted using electrostatic precipitation rifle, processing can also be dusted using flame combustion.
S4: spraying, the workpiece surface spraying coating after dedusting；In the present embodiment, using Disk spraying equipment to workpiece
Powder spraying is carried out, the capstan revolving speed of Disk spraying equipment is 5000-60000r/min, operating voltage 70-120KV；Spraying
Coating with a thickness of 50-150um, preferably coating thickness is 50um.
It should be noted that spraying after the completion of also need to check workpiece, if workpiece locally paint or paint less it is thin, it is right
The position carries out touch-up paint, if spraying workpiece is qualified, flows into subsequent processing.
It should also be noted that, it is fine powder state that powder spraying, which is exactly coating, workpiece is attached to by electrostatic interaction, is passed through
When high temperature ovens, coating melting, levelling, and crosslinking curing；VOC content is zero, and coating is recyclable, and utilization rate is up to 99%
More than.
S5: baking first preheats the workpiece after spray painting using 80 DEG C of temperature, so that solvent portion is evaporated, paint film
Then levelling again toasts the workpiece after preheating using 190 DEG C of temperature, stoving of the paint is dry.To production after drying
Product are checked, qualified product is removed and is packed and stored.
Performance indexes testing result using the steel pipe of above method processing is as follows:
Mechanical properties: impact strength 50Kg/cm applies strange no cracking；Cupping 6.0mm or more/extrusion per second 1mm；Adhesive force
(hundred lattice) test, coating is without falling off；Resistance to bend(ing) 1mm2, 180 ° of bendings, coating free from flaw；Pencil hardness 2H allows slight trace
Mark；
Chemical property: boiling water resistance impregnates 1 hour in boiled water, without exception；Alkali resistance: 5%NaOH, 240 hours without change
Change；Acid resistance 3%HCL, 240 hours unchanged；Solvent resistance, dimethylbenzene, 24 hours unchanged；Stain resistance lipstick, room temperature
Lower 24 hours without exception；
Heat resistance: 180 DEG C x l hours, color difference E < 0.8, gloss retention is excellent；
Corrosion resistance: salt fog resistance 1000 hours unchanged；Humidity resistance 500 hours unchanged.
Embodiment 3
The embodiment of the present invention three provides a kind of baking vanish method for anticorrosion treatment of Keelof green house steel pipe, comprising the following steps:
S1: surface preparation carries out derusting and phosphorating treatment to workpiece surface；Purpose is good coating in order to obtain.
In this step, specific processing method is as follows: first using the greasy dirt of lye removal workpiece surface, lye can be used
Sodium hydroxide, sodium bicarbonate etc.；Then workpiece is cleaned using the clear water of flowing；Processing of rust removing is carried out to workpiece again, is removed
There are many ways to rust, be the prior art, such as soda solution grouting, acid solution method, Mechanical Method, and electrolysis method etc. can remove workpiece table
The oxide skin or rusty stain in face；Again to the workpiece carry out table after derusting after being cleaned using the clear water of flowing to the workpiece after derusting
It adjusts, table tune is to guarantee workpiece surface pH value as neutrality, and effect is to accelerate phosphatization speed, and refinement phosphatization crystallization increases
Add the crystalline temperature of phosphatization, therefore, when derusting using soda solution grouting to workpiece, then table tune is carried out to workpiece using acid solution, when
When derusting using acid solution method to workpiece, then table tune is carried out to workpiece using lye；Reason is mediated to table using the clear water of flowing
Workpiece afterwards places into after being cleaned carries out phosphorating treatment in phosphate solution, so that workpiece surface forms one layer of phosphating coat,
Phosphating coat has the compact texture of tiny holes, can increase workpiece surface product in this way, can increase coating layer touch area, make
Generated between phosphating coat and coating it is advantageous interpenetrate, greatly improve organic coating to the adhesive force of workpiece, and phosphatization institute
The phosphating coat of formation is one layer of stable nonconducting separation layer, and metal surface is made to become non-conductor from excellence conductor, is inhibited
Micro cell is formed, and coating corrosion is effectively prevented, and phosphatization uses normal temperature phosphating, and phosphatization temperature is 20-30 DEG C, preferably 25 DEG C；
Drying and processing is carried out after finally cleaning using clear water to the workpiece after phosphorating treatment, so that workpiece surface is dry.
S2: it is upper to hang, qualified workpiece is hung on hanger；
It should be noted that can also polish workpiece before upper extension, first using 400# waterproof abrasive paper to workpiece surface into
Then row rough grinding reuses 800# waterproof abrasive paper and carries out smart polishing to workpiece, the purpose is to remove surface particulate inclusions and increase
Certain roughness is to increase paint adhesion.
S3: dedusting is dusted processing to the workpiece hung on hanger；Processing can be dusted using compressed air,
Processing can also be dusted using electrostatic precipitation rifle, processing can also be dusted using flame combustion.
S4: spraying, the workpiece surface spraying coating after dedusting；In the present embodiment, using Disk spraying equipment to workpiece
Powder spraying is carried out, the capstan revolving speed of Disk spraying equipment is 5000-60000r/min, operating voltage 70-120KV；Spraying
Coating with a thickness of 50-150um, preferably coating thickness is 150um.
It should be noted that spraying after the completion of also need to check workpiece, if workpiece locally paint or paint less it is thin, it is right
The position carries out touch-up paint, if spraying workpiece is qualified, flows into subsequent processing.
It should also be noted that, it is fine powder state that powder spraying, which is exactly coating, workpiece is attached to by electrostatic interaction, is passed through
When high temperature ovens, coating melting, levelling, and crosslinking curing；VOC content is zero, and coating is recyclable, and utilization rate is up to 99%
More than.
S5: baking first preheats the workpiece after spray painting using 150 DEG C of temperature, so that solvent portion is evaporated, paint film
Then levelling again toasts the workpiece after preheating using 180 DEG C of temperature, stoving of the paint is dry.To production after drying
Product are checked, qualified product is removed and is packed and stored.
Performance indexes testing result using the steel pipe of above method processing is as follows:
Mechanical properties: impact strength 50Kg/cm applies strange no cracking；Cupping 6.0mm or more/extrusion per second 1mm；Adhesive force
(hundred lattice) test, coating is without falling off；Resistance to bend(ing) 1mm2,180 ° of bendings, coating free from flaw；Pencil hardness 2H allows slight trace
Mark；
Chemical property: boiling water resistance impregnates 1 hour in boiled water, without exception；Alkali resistance 5%NaOH, 240 hours without change
Change；Acid resistance 3%HCL, 240 hours unchanged；Solvent resistance, dimethylbenzene, 24 hours unchanged；Stain resistance lipstick, room temperature
Lower 24 hours without exception；
Heat resistance: 180 DEG C x l hours, color difference E < 0.8, gloss retention is excellent；
Corrosion resistance: salt fog resistance 1000 hours unchanged；Humidity resistance 500 hours unchanged.
The present invention is not limited to above-mentioned optional embodiment, anyone can show that other are each under the inspiration of the present invention
The product of kind form.Above-mentioned specific embodiment should not be understood the limitation of pairs of protection scope of the present invention, protection of the invention
Range should be subject to be defined in claims, and specification can be used for interpreting the claims.
Claims (10)
1. a kind of baking vanish method for anticorrosion treatment of Keelof green house steel pipe, it is characterised in that: the following steps are included:
S1: surface preparation carries out derusting and phosphorating treatment to workpiece surface；
S2: it is upper to hang, workpiece is hung on hanger；
S3: dedusting is dusted processing to the workpiece hung on hanger；
S4: spraying, the workpiece surface spraying coating after dedusting；
S5: baking first preheats the workpiece after spray painting using 80-150 DEG C of temperature, so that paint film levelling, is then adopted again
The workpiece after preheating is toasted with 180-190 DEG C of temperature, stoving of the paint is dry.
2. the baking vanish method for anticorrosion treatment of Keelof green house steel pipe according to claim 1, it is characterised in that: in S1 step,
Surface preparation mainly comprises the steps that
S11: oil removing uses the greasy dirt of lye removal workpiece surface；
S12: washing rinses the workpiece after oil removing using clear water；
S13: derusting removes the rusty scale of workpiece surface；
S14: table tune is neutralized the workpiece surface after derusting using lye or acid solution, so that workpiece surface pH value
For neutrality；
S15: phosphatization, by table tune, treated that workpiece is put into phosphate solution handles, so that workpiece surface forms one layer
Phosphating coat；
S16: workpiece is dried in drying, so that workpiece surface is dry.
3. the baking vanish method for anticorrosion treatment of Keelof green house steel pipe according to claim 2, it is characterised in that: in S13 step,
Using the oxide skin or rusty stain of depletion method, acid solution method, Mechanical Method or electrolysis method removal workpiece surface.
4. the baking vanish method for anticorrosion treatment of Keelof green house steel pipe according to claim 2, it is characterised in that: in S15 step,
The treatment temperature of phosphatization is 20-90 DEG C.
5. the baking vanish method for anticorrosion treatment of Keelof green house steel pipe according to claim 4, it is characterised in that: in S15 step,
High temperature phosphorization temperature is 70-90 DEG C, and middle temperature phosphating temperature is 50-70 DEG C, and normal temperature phosphating temperature is 20-30 DEG C.
6. the baking vanish method for anticorrosion treatment of Keelof green house steel pipe according to claim 1, it is characterised in that: carrying out S2 step
Before rapid, rough grinding first is carried out to workpiece surface using 400# waterproof abrasive paper, 800# waterproof abrasive paper is then reused and essence is carried out to workpiece
Polishing.
7. the baking vanish method for anticorrosion treatment of Keelof green house steel pipe according to claim 1, it is characterised in that: in S4 step
In, sprayed coating with a thickness of 50-150um.
8. the baking vanish method for anticorrosion treatment of Keelof green house steel pipe according to claim 1, it is characterised in that: in S4 step
In, powder spraying is carried out to workpiece using Disk spraying equipment.
9. the baking vanish method for anticorrosion treatment of Keelof green house steel pipe according to claim 1, it is characterised in that: S4 step is completed
Afterwards, workpiece is checked, if workpiece locally paints or paint less thin, touch-up paint is carried out to the position, if spraying workpiece is qualified, is flowed
Enter subsequent processing.
10. the baking vanish method for anticorrosion treatment of Keelof green house steel pipe according to claim 1, it is characterised in that: in S5 step
In, first the workpiece after spray painting is preheated using 120 DEG C of temperature, so that paint film levelling, then uses 185 DEG C of temperature again
Workpiece after preheating is toasted, stoving of the paint is dry.
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| CN201910854334.8A CN110523604A (en) | 2019-09-10 | 2019-09-10 | A kind of baking vanish method for anticorrosion treatment of Keelof green house steel pipe |
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| CN201910854334.8A CN110523604A (en) | 2019-09-10 | 2019-09-10 | A kind of baking vanish method for anticorrosion treatment of Keelof green house steel pipe |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111617945A (en) * | 2020-05-19 | 2020-09-04 | 浙江丽童家居有限公司 | Preparation process of thermal transfer printing type wood grain-like iron door sill |
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Application publication date: 20191203 |