CN105369242A - Adjusting method for passivation temperature of steel structure - Google Patents
Adjusting method for passivation temperature of steel structure Download PDFInfo
- Publication number
- CN105369242A CN105369242A CN201510725594.7A CN201510725594A CN105369242A CN 105369242 A CN105369242 A CN 105369242A CN 201510725594 A CN201510725594 A CN 201510725594A CN 105369242 A CN105369242 A CN 105369242A
- Authority
- CN
- China
- Prior art keywords
- passivation
- temperature
- control method
- steel
- steel construction
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
- C23C22/77—Controlling or regulating of the coating process
Abstract
The invention discloses an adjusting method for the passivation temperature of a steel structure. The adjusting method includes the following steps that firstly, a galvanized steel plate is dried and cooled; secondly, first-level passivation is conducted; thirdly, second-level passivation is conducted; fourthly, third-level passivation is conducted; and fifthly, drying is conducted. According to the adjusting method for the passivation temperature of the steel structure, the segmented passivation temperature adjustment is conducted , porosity of a passivation film is effectively reduced, passivation quality is improved, meanwhile, adhesion stability of the passivation film is improved, and therefore passivation quality is effectively improved, corrosion resistance performance of a zinc coating is improved, and the salt spray resistance property of a passivated product is good.
Description
Technical field
The present invention relates to steel construction passivating technique field, particularly relate to a kind of control method of steel construction passivation temperature.
Background technology
Zinc-plated is at present adopt steel anti-corrosive means the most widely, but due to zinc layers in atmosphere, be especially easily corroded in wet environment, so also Passivation Treatment will be carried out to the steel plate after zinc-plated, improve product antiseptic property further.
The processing condition of passivation, the especially passivation temperature corrosion resisting property on zinc coating has direct impact.The impact of formula on passivation effect of what existing passivating method was mainly studied is passivating solution, and research is rarely had for the impact of the temperature condition in passivating process on passivation effect.
Summary of the invention
The technical problem that the present invention mainly solves is to provide a kind of control method of steel construction passivation temperature, effectively can improve passivation effect, improves the corrosion resistance nature of zinc coating.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: the control method providing a kind of steel construction passivation temperature, comprises the steps:
(1) drying of hot-dip galvanizing sheet steel and cooling: the inertia pressurized gas of hot-dip galvanizing sheet steel certain temperature is dried up and is chilled to room temperature;
(2) one-level passivation: utilize interchanger that the passivating solution in deactivation slot is heated to one-level passivation temperature, then by dry in step (1) and cooled hot-dip galvanizing sheet steel immersion deactivation slot, constant temperature passivation 30 ~ 60s;
(3) secondary passivation: utilize above-mentioned interchanger to be continued to be warming up to secondary passivation temperature by the passivating solution being soaked with steel plate galvanized in step (2), constant temperature passivation 5 ~ 20s;
(4) three grades of passivation: utilize above-mentioned interchanger that the passivating solution being soaked with steel plate galvanized in step (3) is cooled to three grades of passivation temperatures, constant temperature keeps 10 ~ 30s;
(5) dry slaking is shaping: take out the steel plate galvanized in step (4), rinse well with clear water, then it is shaping to insert slaking in vacuum drying oven;
The temperature sensor be connected with described interchanger is provided with in described deactivation slot.
In a preferred embodiment of the present invention, in described step (1), described inertia pressurized gas is nitrogen, and its temperature is 60 ~ 70 DEG C, and pressure is 0.5 ~ 0.8MPa.
In a preferred embodiment of the present invention, in described step (2), described one-level passivation temperature is 40 ~ 50 DEG C.
In a preferred embodiment of the present invention, in described step (3), described secondary passivation temperature is 60 ~ 70 DEG C.
In a preferred embodiment of the present invention, in described step (4), described three grades of passivation temperatures are 35 ~ 40 DEG C.
In a preferred embodiment of the present invention, in described step (5), described dry cooking conditions is: temperature 130 ~ 150 DEG C, vacuum tightness 0.1 ~ 0.5MPa, time 40 ~ 60s.
The invention has the beneficial effects as follows: the control method of a kind of steel construction passivation temperature of the present invention, by the adjustment of segmentation passivation temperature, effectively reduce the porosity of passive film, improve passivation quality, improve the attachment steadiness of passive film simultaneously, thus effectively improve passivation quality, strengthen the corrosion resistance nature of zinc coating, the salt spray resistance of passivation product is excellent.
Embodiment
Below preferred embodiment of the present invention is described in detail, can be easier to make advantages and features of the invention be readily appreciated by one skilled in the art, thus more explicit defining is made to protection scope of the present invention.
The embodiment of the present invention comprises:
Embodiment 1
A control method for steel construction passivation temperature, concrete steps are as follows:
(1) drying of hot-dip galvanizing sheet steel and cooling: be 60 ~ 70 DEG C by hot-dip galvanizing sheet steel temperature, pressure is that the nitrogen of 0.5 ~ 0.8MPa dries up and is chilled to room temperature;
The fixing several temperature sensor of suspension in the deactivation slot filling passivating solution, and it is communicated with interchanger, for responding to the temperature of passivating solution at any time and feeding back to interchanger, using the foundation of carrying out being incubated, heating or cooling as interchanger;
(2) one-level passivation: utilize interchanger that the passivating solution in deactivation slot is heated to 40 ~ 50 DEG C, then by dry in step (1) and cooled hot-dip galvanizing sheet steel immersion deactivation slot, constant temperature passivation 30 ~ 60s;
(3) secondary passivation: utilize above-mentioned interchanger to be continued to be warming up to 60 ~ 70 DEG C by the passivating solution being soaked with steel plate galvanized in step (2), constant temperature passivation 5 ~ 20s;
(4) three grades of passivation: utilize above-mentioned interchanger that the passivating solution being soaked with steel plate galvanized in step (3) is cooled to 35 ~ 40 DEG C, constant temperature keeps 10 ~ 30s;
(5) dry: to take out the steel plate galvanized in step (4), rinse well with clear water, then to insert temperature be 130 ~ 150 DEG C, vacuum tightness be 0.1 ~ 0.5MPa vacuum drying oven in slaking 40 ~ 60s.
The present invention adopts three grades of passivation technologies, first heats up and lowers the temperature, on the one hand passivation is carried out layer by layer, reduces the porosity of passive film, improves corrosion resistance; On the other hand, progressively cooling can improve the firm performance of passivation layer.
Steel construction product after said temperature regulates passivation carries out smoke test, and its salt-fog resistant test reaches 4 ~ 5 grades after 90 hours.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every utilize description of the present invention to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (6)
1. a control method for steel construction passivation temperature, is characterized in that, comprises the steps:
(1) drying of hot-dip galvanizing sheet steel and cooling: the inertia pressurized gas of hot-dip galvanizing sheet steel certain temperature is dried up and is chilled to room temperature;
(2) one-level passivation: utilize interchanger that the passivating solution in deactivation slot is heated to one-level passivation temperature, then by dry in step (1) and cooled hot-dip galvanizing sheet steel immersion deactivation slot, constant temperature passivation 30 ~ 60s;
(3) secondary passivation: utilize above-mentioned interchanger to be continued to be warming up to secondary passivation temperature by the passivating solution being soaked with steel plate galvanized in step (2), constant temperature passivation 5 ~ 20s;
(4) three grades of passivation: utilize above-mentioned interchanger that the passivating solution being soaked with steel plate galvanized in step (3) is cooled to three grades of passivation temperatures, constant temperature keeps 10 ~ 30s;
(5) dry slaking is shaping: take out the steel plate galvanized in step (4), rinse well with clear water, then inserts in vacuum drying oven that to dry slaking shaping;
The temperature sensor be connected with described interchanger is provided with in described deactivation slot.
2. the control method of steel construction passivation temperature according to claim 1, is characterized in that, in described step (1), described inertia pressurized gas is nitrogen, and its temperature is 60 ~ 70 DEG C, and pressure is 0.5 ~ 0.8MPa.
3. the control method of steel construction passivation temperature according to claim 1, is characterized in that, in described step (2), described one-level passivation temperature is 40 ~ 50 DEG C.
4. the control method of steel construction passivation temperature according to claim 1, is characterized in that, in described step (3), described secondary passivation temperature is 60 ~ 70 DEG C.
5. the control method of steel construction passivation temperature according to claim 1, is characterized in that, in described step (4), described three grades of passivation temperatures are 35 ~ 40 DEG C.
6. the control method of steel construction passivation temperature according to claim 1, is characterized in that, in described step (5), described dry cooking conditions is: temperature 130 ~ 150 DEG C, vacuum tightness 0.1 ~ 0.5MPa, time 40 ~ 60s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510725594.7A CN105369242B (en) | 2015-11-02 | 2015-11-02 | A kind of adjusting method of steel construction passivation temperature |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510725594.7A CN105369242B (en) | 2015-11-02 | 2015-11-02 | A kind of adjusting method of steel construction passivation temperature |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105369242A true CN105369242A (en) | 2016-03-02 |
| CN105369242B CN105369242B (en) | 2017-11-28 |
Family
ID=55371858
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510725594.7A Active CN105369242B (en) | 2015-11-02 | 2015-11-02 | A kind of adjusting method of steel construction passivation temperature |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105369242B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110804734A (en) * | 2019-10-12 | 2020-02-18 | 哈尔滨飞机工业集团有限责任公司 | Composite passivation method for stainless steel material |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101425386A (en) * | 2008-07-29 | 2009-05-06 | 东莞市东阳光电容器有限公司 | Preparation for producing aluminum electrolysis capacitor using ultrasonics |
| CN101597056A (en) * | 2009-07-07 | 2009-12-09 | 中国科学院山西煤炭化学研究所 | The passivating method of activated carbon surface |
| CN102634784A (en) * | 2012-04-24 | 2012-08-15 | 江苏金华厦电气有限公司 | Surface treatment method of nuclear bridge |
| CN104593764A (en) * | 2014-12-25 | 2015-05-06 | 昆山硕磁金属材料制品有限公司 | Steel surface phosphatizing technology |
-
2015
- 2015-11-02 CN CN201510725594.7A patent/CN105369242B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101425386A (en) * | 2008-07-29 | 2009-05-06 | 东莞市东阳光电容器有限公司 | Preparation for producing aluminum electrolysis capacitor using ultrasonics |
| CN101597056A (en) * | 2009-07-07 | 2009-12-09 | 中国科学院山西煤炭化学研究所 | The passivating method of activated carbon surface |
| CN102634784A (en) * | 2012-04-24 | 2012-08-15 | 江苏金华厦电气有限公司 | Surface treatment method of nuclear bridge |
| CN104593764A (en) * | 2014-12-25 | 2015-05-06 | 昆山硕磁金属材料制品有限公司 | Steel surface phosphatizing technology |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110804734A (en) * | 2019-10-12 | 2020-02-18 | 哈尔滨飞机工业集团有限责任公司 | Composite passivation method for stainless steel material |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105369242B (en) | 2017-11-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102747352B (en) | Passivator and passivation for hot galvanized sheet | |
| CN104328371A (en) | Hot dip galvanizing technique for implementing corrosion resistance and rust resistance of steel tube | |
| CN107513681B (en) | Hot-dip galvanizing process | |
| CN104419226A (en) | Stabilized coating for surface rust layer of weatherproof steel | |
| CN105369242A (en) | Adjusting method for passivation temperature of steel structure | |
| CN110499485A (en) | A kind of alloying processing method preparing high anti-powdering hot dip galvanizing coating | |
| CN204174277U (en) | A kind of coating unit preventing steel pipe white rust from producing | |
| CN105950988A (en) | Steel plate used for communication tower and galvanization method of steel plate | |
| CN102748887B (en) | Manufacturing process of novel solar water heater bracket | |
| CN103334100A (en) | Mechanical zinc plating technique | |
| CN105849499A (en) | Heat exchanger coating | |
| CN105296998A (en) | Control method of surface cracks of passivated membrane of chromium-free passivated galvanized plate | |
| CN105369241B (en) | A kind of steel construction non-chromium inactivating technique | |
| CN107779854A (en) | A kind of method that passivating film is made in hot-galvanized steel plate surface | |
| CN109371391A (en) | A kind of mechanical zinc-plating process | |
| CN102314979B (en) | There is the rare earth permanent-magnetic material and the coating agent preparing it and preparation method thereof of zinc-aluminium composite coating | |
| CN112795279A (en) | Corrosion-resistant composite color-coated sheet and preparation method thereof | |
| CN202246935U (en) | electrogalvanizing and metal paint impregnating device | |
| CN106345665B (en) | A kind of processing method of high durable PCM plate | |
| CN105296908A (en) | Production technology of hot-galvanized pipe | |
| CN102965656B (en) | Low-temperature drying passivant and passivation method for hot-dip galvanized steel sheet | |
| CN215656206U (en) | Color coating film-coated plate | |
| CN204418402U (en) | A kind of steel bridge Novel fire-resistance heat-insulation system | |
| CN107794476A (en) | A kind of corrosion resisting steel structural member | |
| CN105316611A (en) | Production process for galvanized pipe |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |