CN106435558A - Passivation treatment process of chemical pump stainless steel shell - Google Patents
Passivation treatment process of chemical pump stainless steel shell Download PDFInfo
- Publication number
- CN106435558A CN106435558A CN201610871535.5A CN201610871535A CN106435558A CN 106435558 A CN106435558 A CN 106435558A CN 201610871535 A CN201610871535 A CN 201610871535A CN 106435558 A CN106435558 A CN 106435558A
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- Prior art keywords
- stainless steel
- passivation
- steel casing
- treatment
- temperature
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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
-
- 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
- C23C22/34—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 fluorides or complex fluorides
- C23C22/36—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 fluorides or complex fluorides containing also phosphates
-
- 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
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- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
The invention discloses a passivation treatment process of a chemical pump stainless steel shell. The passivation treatment process comprises the steps of: (1) cleaning of the stainless steel shell by sodium bicarbonate solution; (2) acid washing; (3) treatment by treating liquid A; (4) cleaning by sodium carbonate solution; and cleaning by clear water; and (5) treatment by a passivation agent. The stainless steel shell surface treatment process is simple, can improve one time of the passivation effect through treatment before passivation, combines with the passivation agent to obviously improve the capacity of resisting external environment erosion by the passivation agent, is more uniform in passivation, is high in compactness of a passivation layer, and is better in corrosion resistance; the preparation of the passivation agent is adjusted by combining with characteristics of a stainless steel material; the corrosion resistance of stainless steel can be further improved; the hardness of the passivation layer is increased by 1-1.5 times; and meanwhile, the process is simple, low in energy consumption, short in passivation time, high in utilization rate and free of pollution.
Description
Technical field
The present invention relates to chemical pumping pump case field of surface treatment, more particularly to a kind of passivation of chemical pumping stainless steel casing
Handling process.
Background technology
Chemical pump is the energy-saving pump of Joint National design, the performance of pump, and technical requirements, according to international standard ISO2858 institute
The performance of regulation and size design, its advantage：Complete series conservancy property is rationally distributed, user's range of choice width, " open type afterwards "
Structure, maintenance is convenient, efficiency and suction are reached advanced world standards.Chemical industry Pump type：Rustless steel chemical pump, plastics chemical pump,
Fluoroplastics chemical pump, electronic chemical pump, pneumatic chemical pump.In a lot of fields, chemical pump adopts No. 20 rustless steel preparations, is adding
In man-hour, need stainless steel surfaces are surface-treated, lift Corrosion Protection.
Content of the invention
The present invention is achieved through the following technical solutions：
A kind of passivation process of chemical pumping stainless steel casing, comprises the following steps：
（1）, stainless steel casing is 12 DEG C using temperature the sodium bicarbonate aqueous solution of mass fraction 2.5% in soak, and use
After ultrasonic Treatment 10min of 20kHz, add the isopropanol of sodium bicarbonate quality 60%, then temperature is increased to 72 DEG C, and
After ultrasonic Treatment 18min of 28kHz, using clean water；By using the cooperation of certain density sodium bicarbonate solution
Ultrasound wave is processed to stainless steel casing, not only cleans more totally moreover it is possible to improve stainless steel casing surface property, thus carrying
High passivation effect；
（2）, by step（1）The acetum of the stainless steel casing use quality fraction 0.2% handled well is carried out once to its surface
Pickling, a pickling time 10min, after standing 12min, the citric acid solution of use quality fraction 0.4% carries out two to its surface
Secondary pickling, simultaneously using supersound process 10min of 18kHz, then using clean water；
(3), by the stainless steel casing after pickling, using treatment fluid A at 30 DEG C immersion treatment 18min with 200r/min rotating speed
Rotate, described treatment fluid A is by weight by ammonia 2.5, carbamide 3.5, Lauryl Alcohol ester 1.2, sodium alkyl sulfonate 2.6, floor file
Broomcorn millet leaf extract 0.1, water 20；Using the process for the treatment of fluid A, passivation effect can be improved further so that passivating film corrosion resistance
Can be greatly improved, it is possible to increase 0.5 times of passivation layer hardness；
（4）, by step（3）Process the stainless steel casing that completes using temperature be 35 DEG C, the sodium carbonate liquor of mass fraction 0.5%
Rinse 5min, then again 2min is rinsed using the clear water that temperature is 8 DEG C, then be dried at 60 DEG C；
（5）, by step（4）The stainless steel casing handled well is passivated processing using passivator, and Passivation Treatment initial temperature is
40 DEG C, per second heat up 3 DEG C, the Passivation Treatment time be 12s, when temperature reaches 70 DEG C, using ultrasonic Treatment 2s of 28kHz,
Passivator is made up of following component by weight：Triethanolamine 2.3, potassium chlorate 3, hexamethylenamine 3.5, nano titanium oxide 1,
Lignin 0.5, potassium fluosilicate 1.2, disodium hydrogen phosphate 5, water 60；Using the present invention prepare passivator and coordinate ultrasonic Treatment
Can be fast in stainless steel casing surface continuously quick passivation film forming incessantly, passivation reaction time, film salt-fog resistant time is long, tank liquor
Stable, the salt-fog resistant time after process processes compared to common passivator and improves more than 2 times, and passivation layer adhesive force is very simultaneously
Height, difficult for drop-off.
Further, described step（3）Middle Herba panici repentics leaf extract preparation method is：75% volume is adopted by Herba panici repentics leaf
Percent concentration alcohol solvent, solid-liquid ratio 1:25,55 DEG C of reflux, extract, 1.5h, are centrifuged to obtain supernatant, then rotary evaporation is dense
Contracting, then lyophilization is obtained.
Further, described step（4）Middle drying is vacuum drying.
The invention has the beneficial effects as follows：The stainless steel casing process of surface treatment that the present invention provides is simple, by passivation
Before the process that carries out, 1 times of passivation effect can be lifted, the passivator being used in combination present invention preparation can significantly improve passivator
The ability that opposing external environment corrodes, can make passivation evenly, passivation layer consistency high, antiseptic property more preferably, passivator system
The standby feature with reference to stainless steel is allocated, and can improve stainless anti-corrosion capability, the hardness of passivation layer further
Improve 1-1.5 times, simultaneously process is simple, energy consumption is low, the Passivation Treatment time is short, utilization rate is high, pollution-free.
Specific embodiment
A kind of passivation process of chemical pumping stainless steel casing, comprises the following steps：
（1）, stainless steel casing is 12 DEG C using temperature the sodium bicarbonate aqueous solution of mass fraction 2.5% in soak, and use
After ultrasonic Treatment 10min of 20kHz, add the isopropanol of sodium bicarbonate quality 60%, then temperature is increased to 72 DEG C, and
After ultrasonic Treatment 18min of 28kHz, using clean water；
（2）, by step（1）The acetum of the stainless steel casing use quality fraction 0.2% handled well is carried out once to its surface
Pickling, a pickling time 10min, after standing 12min, the citric acid solution of use quality fraction 0.4% carries out two to its surface
Secondary pickling, simultaneously using supersound process 10min of 18kHz, then using clean water；
(3), by the stainless steel casing after pickling, using treatment fluid A at 30 DEG C immersion treatment 18min with 200r/min rotating speed
Rotate, described treatment fluid A is by weight by ammonia 2.5, carbamide 3.5, Lauryl Alcohol ester 1.2, sodium alkyl sulfonate 2.6, floor file
Broomcorn millet leaf extract 0.1, water 20；
（4）, by step（3）Process the stainless steel casing that completes using temperature be 35 DEG C, the sodium carbonate liquor of mass fraction 0.5%
Rinse 5min, then again 2min is rinsed using the clear water that temperature is 8 DEG C, then be dried at 60 DEG C；
（5）, by step（4）The stainless steel casing handled well is passivated processing using passivator, and Passivation Treatment initial temperature is
40 DEG C, per second heat up 3 DEG C, the Passivation Treatment time be 12s, when temperature reaches 70 DEG C, using ultrasonic Treatment 2s of 28kHz,
Passivator is made up of following component by weight：Triethanolamine 2.3, potassium chlorate 3, hexamethylenamine 3.5, nano titanium oxide 1,
Lignin 0.5, potassium fluosilicate 1.2, disodium hydrogen phosphate 5, water 60.
Further, described step（3）Middle Herba panici repentics leaf extract preparation method is：75% volume is adopted by Herba panici repentics leaf
Percent concentration alcohol solvent, solid-liquid ratio 1:25,55 DEG C of reflux, extract, 1.5h, are centrifuged to obtain supernatant, then rotary evaporation is dense
Contracting, then lyophilization is obtained.
Further, described step（4）Middle drying is vacuum drying.
Performance test
The stainless steel casing that the present invention and comparative example are processed carries out performance test, the results are shown in Table 1.
20% ammonium nitrate solution heating in water bath will be filled to 70 DEG C, will be molten for treated stainless steel casing immersion ammonium nitrate
In liquid, observe the time that corrosion speckle substantially occurs.
Table 1：
| Resistance to ammonium nitrate solution time/min | |
| The present invention | 520 |
| Comparative example 1 | 440 |
| Comparative example 2 | 432 |
| Comparative example 3 | 422 |
Wherein, comparative example 1 is：By step of the present invention（1）It is changed to：The mass fraction that stainless steel casing is 12 DEG C using temperature
In 2.5% sodium bicarbonate aqueous solution soak, and using 20kHz ultrasonic Treatment 10min after, using clean water, at remaining
Reason step is constant；
Comparative example 2 is：By step of the present invention（3）Without Herba panici repentics leaf extract and carbamide in middle treatment fluid A, other compositions are not
Become, remaining process step is constant；
Comparative example 3 is：By step of the present invention（5）Middle remove when temperature reaches 70 DEG C, using ultrasonic Treatment 2s of 28kHz
Process step, remaining is constant, and remaining process step is constant；
It can be seen from Table 1 that, change process step of the present invention hence it is evident that reducing the anti-corrosion of the stainless steel casing after passivator is processed
Corrosion energy.
(5%NaCl solution was even in up to 122 hours for stainless steel casing salt spray resistance after passivator of the present invention is processed
Continuous spraying, 35 DEG C of temperature）, when by step of the present invention（5）Middle remove when temperature reaches 70 DEG C, at the ultrasound wave of 28kHz
The process step of reason 2s, remaining is constant, and when remaining process step is constant, the stainless steel casing salt-fog resistant time after process is 100
Hour, salt spray resistance substantially reduces.
Claims (3)
1. a kind of passivation process of chemical pumping stainless steel casing is it is characterised in that comprise the following steps：
（1）, stainless steel casing is 12 DEG C using temperature the sodium bicarbonate aqueous solution of mass fraction 2.5% in soak, and use
After ultrasonic Treatment 10min of 20kHz, add the isopropanol of sodium bicarbonate quality 60%, then temperature is increased to 72 DEG C, and
After ultrasonic Treatment 18min of 28kHz, using clean water；
（2）, by step（1）The acetum of the stainless steel casing use quality fraction 0.2% handled well is carried out once to its surface
Pickling, a pickling time 10min, after standing 12min, the citric acid solution of use quality fraction 0.4% carries out two to its surface
Secondary pickling, simultaneously using supersound process 10min of 18kHz, then using clean water；
(3), by the stainless steel casing after pickling, using treatment fluid A at 30 DEG C immersion treatment 18min with 200r/min rotating speed
Rotate, described treatment fluid A is by weight by ammonia 2.5, carbamide 3.5, Lauryl Alcohol ester 1.2, sodium alkyl sulfonate 2.6, floor file
Broomcorn millet leaf extract 0.1, water 20；
（4）, by step（3）Process the stainless steel casing that completes using temperature be 35 DEG C, the sodium carbonate liquor of mass fraction 0.5%
Rinse 5min, then again 2min is rinsed using the clear water that temperature is 8 DEG C, then be dried at 60 DEG C；
（5）, by step（4）The stainless steel casing handled well is passivated processing using passivator, and Passivation Treatment initial temperature is
40 DEG C, per second heat up 3 DEG C, the Passivation Treatment time be 12s, when temperature reaches 70 DEG C, using ultrasonic Treatment 2s of 28kHz,
Passivator is made up of following component by weight：Triethanolamine 2.3, potassium chlorate 3, hexamethylenamine 3.5, nano titanium oxide 1,
Lignin 0.5, potassium fluosilicate 1.2, disodium hydrogen phosphate 5, water 60.
2. a kind of passivation process of chemical pumping stainless steel casing according to claim 1 is it is characterised in that described step
Suddenly（3）Middle Herba panici repentics leaf extract preparation method is：75% concentration of volume percent alcohol solvent, feed liquid are adopted by Herba panici repentics leaf
Ratio 1:25,55 DEG C of reflux, extract, 1.5h, are centrifuged to obtain supernatant, and then rotary evaporation concentrates, and then lyophilization is obtained.
3. a kind of passivation process of chemical pumping stainless steel casing according to claim 1 is it is characterised in that described step
Suddenly（4）Middle drying is vacuum drying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610871535.5A CN106435558A (en) | 2016-09-30 | 2016-09-30 | Passivation treatment process of chemical pump stainless steel shell |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610871535.5A CN106435558A (en) | 2016-09-30 | 2016-09-30 | Passivation treatment process of chemical pump stainless steel shell |
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| CN106435558A true CN106435558A (en) | 2017-02-22 |
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| CN201610871535.5A Pending CN106435558A (en) | 2016-09-30 | 2016-09-30 | Passivation treatment process of chemical pump stainless steel shell |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107217248A (en) * | 2017-08-09 | 2017-09-29 | 广东尔航实业有限公司 | Passivation for stainless steel liquid and its passivation new technology |
| CN108443211A (en) * | 2018-02-27 | 2018-08-24 | 江苏新世界泵业有限公司 | Vertical-type axial-flow pump |
| CN112899696A (en) * | 2021-01-27 | 2021-06-04 | 江苏道成不锈钢管业有限公司 | Environment-friendly stainless steel pickling method |
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| CN103766798A (en) * | 2014-01-22 | 2014-05-07 | 浙江师范大学 | Vanilla plant extract and preparation method thereof as well as application in food preservation |
| CN104294254A (en) * | 2014-11-11 | 2015-01-21 | 郑华靖 | High-efficiency environment-friendly passivant |
| CN104975284A (en) * | 2015-06-30 | 2015-10-14 | 安徽飞达新材料科技股份有限公司 | Surface treatment process for cold-rolled stainless steel strip |
| CN105648430A (en) * | 2016-03-18 | 2016-06-08 | 宜昌市西峡泵业有限公司 | Passivation treatment technology for chemical pump stainless steel shell |
-
2016
- 2016-09-30 CN CN201610871535.5A patent/CN106435558A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103766798A (en) * | 2014-01-22 | 2014-05-07 | 浙江师范大学 | Vanilla plant extract and preparation method thereof as well as application in food preservation |
| CN104294254A (en) * | 2014-11-11 | 2015-01-21 | 郑华靖 | High-efficiency environment-friendly passivant |
| CN104975284A (en) * | 2015-06-30 | 2015-10-14 | 安徽飞达新材料科技股份有限公司 | Surface treatment process for cold-rolled stainless steel strip |
| CN105648430A (en) * | 2016-03-18 | 2016-06-08 | 宜昌市西峡泵业有限公司 | Passivation treatment technology for chemical pump stainless steel shell |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107217248A (en) * | 2017-08-09 | 2017-09-29 | 广东尔航实业有限公司 | Passivation for stainless steel liquid and its passivation new technology |
| CN108443211A (en) * | 2018-02-27 | 2018-08-24 | 江苏新世界泵业有限公司 | Vertical-type axial-flow pump |
| CN112899696A (en) * | 2021-01-27 | 2021-06-04 | 江苏道成不锈钢管业有限公司 | Environment-friendly stainless steel pickling method |
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Application publication date: 20170222 |