CN110358903A - A kind of production technology of hot-galvanized steel band - Google Patents
A kind of production technology of hot-galvanized steel band Download PDFInfo
- Publication number
- CN110358903A CN110358903A CN201910667326.2A CN201910667326A CN110358903A CN 110358903 A CN110358903 A CN 110358903A CN 201910667326 A CN201910667326 A CN 201910667326A CN 110358903 A CN110358903 A CN 110358903A
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- CN
- China
- Prior art keywords
- hot
- steel band
- cold
- production technology
- galvanized steel
- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/04—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing
- B21B45/06—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing of strip material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/04—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing
- B21B45/08—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing hydraulically
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
- C21D8/0236—Cold rolling
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
-
- 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
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
-
- 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
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
- C23C2/06—Zinc or cadmium or alloys based thereon
-
- 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
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/34—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the shape of the material to be treated
- C23C2/36—Elongated material
- C23C2/40—Plates; Strips
Abstract
The invention discloses a kind of production technology of hot-galvanized steel band, the production technology of the hot-galvanized steel band is the following steps are included: step 1, carries out physics mode removing surface oxide layer after choosing suitable hot rolled plate uncoiling；The hot rolled plate for removing surface oxide layer is obtained cold-rolled steel sheet through multiple tracks cold rolling program by step 2；Step 3 cleans the grease of the surface of cold-rolled steel plate using hot water, removes surface grease；Step 4 anneals the cold-rolled steel sheet after step 3 is cleared up quenched under oxygen-free environment；Cold-rolled steel sheet smoothing after annealing is divided into steel band by step 5；Step 5 treated steel band is carried out hot galvanizing processing by step 6.By the above-mentioned means, the usage quantity that the present invention can effectively reduce acidity and alkali chemical in entire process route reduces the processing pressure of industrial wastewater while reducing operating cost.
Description
Technical field
The present invention relates to steel band manufacture fields, more particularly to a kind of production technology of hot-galvanized steel band.
Background technique
Steel band is widely used in the various aspects for producing and living as the basic material of steel product, and steel band has good
Stretching, bending property and higher antiwear characteristic, but steel band itself be exposed in air for a long time again be easy because air in
Moisture cause aoxidize or corrode, reduce the service life, to improve this problem, people generally use zinc-plated mode and improve steel
Pickling and degreasing process part with the corrosion resistance characteristic of itself, but in steel band galvanizing process will use a large amount of strong acid and strong
Alkali generates a large amount of chemical waste fluid, it is difficult to handle.
Summary of the invention
The invention mainly solves the technical problem of providing a kind of production technologies of galvanized steel strip, can reduce chemicals
Dosage, reduce environmental pollution.
In order to solve the above technical problems, one technical scheme adopted by the invention is that: a kind of life of hot-galvanized steel band is provided
Production. art, the production technology of the hot-galvanized steel band is the following steps are included: step 1, it is laggard to choose suitable hot rolled plate uncoiling
Row physics mode removes surface oxide layer；Step 2 obtains the hot rolled plate for removing surface oxide layer through multiple tracks cold rolling program
Cold-rolled steel sheet；Step 3 cleans the grease of the surface of cold-rolled steel plate using hot water, removes surface grease；Step 4, will be through
Cold-rolled steel sheet after step 3 cleaning is annealed quenched under oxygen-free environment；Cold-rolled steel sheet after annealing is smoothed segmentation by step 5
At steel band；Step 5 treated steel band is carried out hot galvanizing processing by step 6.
In a preferred embodiment of the present invention, the sweep-out method of the hot rolled plate surface oxide layer in the step 1 is
By alternating bending and compress after plate enables plate surface oxide layer be chapped from the cold using high-pressure water knife scraping and roller apparatus polishing two
Removal surface oxide layer is used in combination in one of kind of mode or two kinds.
In a preferred embodiment of the present invention, the hot water temperature in the step 3 is 80 ~ 100 DEG C.
In a preferred embodiment of the present invention, it anneals under oxygen-free environment described in told step 4 quenched use
Bell type annealing furnace is full of inert protective gas, oxygen in the protective gas in the bell type annealing furnace annealing process in inner cover
Content is lower than 0.5%.
In a preferred embodiment of the present invention, the hot dip galvanizing process of the step 6 includes the following contents: firstly, moving back
It is 60 DEG C~80 DEG C after fire in temperature after galvanized steel strip direct impregnation and helps the rear taking-up of plating 3 ~ 4min of pond or so and use hot wind
Drying；Then, will pass through helps the steel band of plating to be immersed in the zinc liquid of melting, to dipping 6 ~ 8min of the steel band in zinc liquid
Afterwards, it is quickly transferred to be rapidly cooled in cooling bay；Finally, the galvanized steel strip cooled down is immersed in passivating solution,
Galvanized part surface forms one layer of passivating film, is rinsed after passivation with pure water and uses hot-air seasoning.
In a preferred embodiment of the present invention, the ingredient of the quickening liquid by ZnCl2, NH4Cl and water and forms, and helps
Solution pH value is adjusted using ammonium hydroxide during plating, solution is made to be maintained at faintly acid.
In a preferred embodiment of the present invention, the temperature of the zinc liquid is 480 ~ 500 DEG C.
The beneficial effects of the present invention are: the technical scheme is that the method using physics replaces common pickling deoxygenation
Change layer program and alkali cleaning degreasing process, effectively reduces the use number of the acidity and alkali chemical in entire process route
Amount reduces the processing pressure of industrial wastewater while reducing operating cost.
Detailed description of the invention
Fig. 1 is the process flow diagram of a preferred embodiment of the present invention.
Specific embodiment
The preferred embodiments of the present invention will be described in detail with reference to the accompanying drawing, so that advantages and features of the invention energy
It is easier to be readily appreciated by one skilled in the art, so as to make a clearer definition of the protection scope of the present invention.
Attached drawing is please referred to, the embodiment of the present invention includes:
A kind of production technology of hot-galvanized steel band, the production technology of the hot-galvanized steel band the following steps are included:
Step 1 carries out physics mode removing surface oxide layer after choosing suitable hot rolled plate uncoiling；
The hot rolled plate for removing surface oxide layer is obtained cold-rolled steel sheet through multiple tracks cold rolling program by step 2；
Step 3 cleans the grease of the surface of cold-rolled steel plate using hot water, removes surface grease；
Step 4 anneals the cold-rolled steel sheet after step 3 is cleared up quenched under oxygen-free environment；
Cold-rolled steel sheet smoothing after annealing is divided into steel band by step 5；
Step 5 treated steel band is carried out hot galvanizing processing by step 6.
The sweep-out method of hot rolled plate surface oxide layer in the step 1 is by first wide-angle alternating bending and pressure
Plate surface oxide layer is enabled to be chapped from the cold then using high-pressure water knife scraping steel strip surface oxide layer, the high pressure tight plate at least 10 times
The operating pressure of water knife is 50 ~ 70MPa, after the hardened layer that can have been generated plate surface through the above way is effectively chapped from the cold
It thoroughly strikes off again.
Hot water temperature in the step 3 is 80 ~ 100 DEG C, by hot water shower, can effectively be melted surface grease
It is rinsed out afterwards from surface of cold-rolled steel plate.
It anneals under oxygen-free environment described in told step 4 and quenched uses bell type annealing furnace, the bell type annealing furnace
Inert protective gas is full of in annealing process in inner cover, oxygen content is lower than 0.5% in the protective gas.Through the above way
It can be effectively prevented and generate oxidative phenomena in annealing process, surface of steel plate is caused to occur oxide layer again, influence following process
The hot dip galvanizing process of the step 6 includes the following contents:
Firstly, after annealing after galvanized steel strip direct impregnation temperature be 60 DEG C~80 DEG C help plating pond 3min or so after take out
And use hot-air seasoning；Then, will pass through helps the steel band of plating to be immersed in the zinc liquid of melting, to leaching of the steel band in zinc liquid
After stain 6min, it is quickly transferred to be rapidly cooled in cooling bay；Finally, the galvanized steel strip cooled down is immersed in passivating solution
In, one layer of passivating film is formed on galvanized part surface, is rinsed after passivation with pure water and uses hot-air seasoning.Through the above steps
It may be implemented to effectively improve the corrosion resistance characteristic of steel band to the zinc-plated of steel strip surface and passivation
The ingredient of the quickening liquid is by ZnCl2, NH4Cl and water and forms, and helps during plating and adjust solution pH value using ammonium hydroxide,
On the one hand workpiece surface is made to form activation film layer, the zinc oxide film of solution surface influences base steel in zinc coat when preventing zinc liquid from adhering to
Combination effect, on the other hand will not introduce impurity in quickening liquid when controlling pH value.
The temperature of the zinc liquid is 480 ~ 500 DEG C, and the fusing point of zinc is 420 DEG C or so, and too low, zinc liquid poor fluidity is too high,
Energy consumption increases.
In another embodiment,
A kind of production technology of hot-galvanized steel band, the production technology of the hot-galvanized steel band the following steps are included:
Step 1 carries out physics mode removing surface oxide layer after choosing suitable hot rolled plate uncoiling；
The hot rolled plate for removing surface oxide layer is obtained cold-rolled steel sheet through multiple tracks cold rolling program by step 2；
Step 3 cleans the grease of the surface of cold-rolled steel plate using hot water, removes surface grease；
Step 4 anneals the cold-rolled steel sheet after step 3 is cleared up quenched under oxygen-free environment；
Cold-rolled steel sheet smoothing after annealing is divided into steel band by step 5；
Step 5 treated steel band is carried out hot galvanizing processing by step 6.
The sweep-out method of hot rolled plate surface oxide layer in the step 1 is by alternating bending and to compress plate order
Plate surface oxide layer uses roller apparatus grinding removal plate surface oxide layer, grinding after using high-pressure water knife scraping after being chapped from the cold
High-pressure water knife cleaning surface is reused later, and the hardened layer that can have been generated plate surface through the above way is effectively chapped
It is thoroughly struck off again after splitting, the operating pressure of high-pressure water knife is 5 ~ 10MPA at this time, mainly plays pre-cleaning.
Hot water temperature in the step 3 is 80 ~ 100 DEG C, by hot water shower, can effectively be melted surface grease
It is rinsed out afterwards from surface of cold-rolled steel plate.
It anneals under oxygen-free environment described in told step 4 and quenched uses bell type annealing furnace, the bell type annealing furnace
Inert protective gas is full of in annealing process in inner cover, oxygen content is lower than 0.5% in the protective gas.Through the above way
It can be effectively prevented and generate oxidative phenomena in annealing process, cold-rolled strip surface is caused to occur oxide layer again, influence subsequent add
Work
The hot dip galvanizing process of the step 6 includes the following contents:
Firstly, after annealing after galvanized steel strip direct impregnation temperature be 60 DEG C~80 DEG C help plating pond 4min or so after take out
And use hot-air seasoning；Then, will pass through helps the steel band of plating to be immersed in the zinc liquid of melting, to leaching of the steel band in zinc liquid
After stain 8min, it is quickly transferred to be rapidly cooled in cooling bay；Finally, the galvanized steel strip cooled down is immersed in passivating solution
In, one layer of passivating film is formed on galvanized part surface, is rinsed after passivation with pure water and uses hot-air seasoning.Through the above steps
It may be implemented to effectively improve the corrosion resistance characteristic of steel band to the zinc-plated of steel strip surface and passivation
The ingredient of the quickening liquid is by ZnCl2, NH4Cl and water and forms, and helps during plating and adjust solution pH value using ammonium hydroxide,
On the one hand workpiece surface is made to form activation film layer, the zinc oxide film of solution surface influences base steel in zinc coat when preventing zinc liquid from adhering to
Combination effect, on the other hand will not introduce impurity in quickening liquid when controlling pH value.
The temperature of the zinc liquid is 480 ~ 500 DEG C, and the fusing point of zinc is 420 DEG C or so, and too low, zinc liquid poor fluidity is too high,
Energy consumption increases.
The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Claims (7)
1. a kind of production technology of hot-galvanized steel band, which is characterized in that the production technology of the hot-galvanized steel band includes following step
It is rapid:
Step 1 carries out physics mode removing surface oxide layer after choosing suitable hot rolled plate uncoiling；
Step 2 carries out multiple tracks cold rolling to the hot rolled plate of removal surface oxide layer and obtains cold-rolled steel sheet；
Step 3 cleans the grease for the surface of cold-rolled steel plate that the step 2 obtains using hot water, removes surface grease；
Step 4 anneals the cold-rolled steel sheet after step 3 is cleared up quenched under oxygen-free environment；
Cold-rolled steel sheet smoothing after annealing is divided into steel band by step 5；
Step 5 treated steel plate is carried out hot galvanizing processing by step 6.
2. the production technology of hot-galvanized steel band according to claim 1, which is characterized in that the hot rolled plate in the step 1
The sweep-out method of material surface oxide layer is by alternating bending and to compress after plate enables plate surface oxide layer be chapped from the cold using high pressure
Removal surface oxide layer is used in combination in the scraping of water knife and roller apparatus polishing one of two ways or two kinds.
3. the production technology of hot-galvanized steel band according to claim 1, which is characterized in that the hot water temperature in the step 3
Degree is 80 ~ 100 DEG C.
4. the production technology of hot-galvanized steel band according to claim 1, which is characterized in that anaerobic described in told step 4
Anneal under environment it is quenched use bell type annealing furnace, in the bell type annealing furnace annealing process in inner cover full of inertia protect gas
Body, oxygen content is lower than 0.5% in the protective gas.
5. the production technology of hot-galvanized steel band according to claim 1, which is characterized in that the hot galvanizing work of the step 6
Skill includes the following contents:
Firstly, after annealing after galvanized steel strip direct impregnation temperature be 60 DEG C~80 DEG C help plating 3 ~ 4min of pond or so after take
Out and use hot-air seasoning；
Then, will pass through helps the steel band of plating to be immersed in the zinc liquid of melting, after steel band after 6 ~ 8min of dipping in zinc liquid,
It is quickly transferred to be rapidly cooled in cooling bay；
Finally, the galvanized steel strip cooled down is immersed in passivating solution, one layer of passivating film, passivation knot are formed on galvanized part surface
Shu Houyong pure water rinses and uses hot-air seasoning.
6. the production technology of hot-galvanized steel band according to claim 5, which is characterized in that the ingredient of the quickening liquid by
ZnCl2, NH4Cl and water and composition, and help during plating and adjust solution pH value using ammonium hydroxide, so that solution is maintained at faintly acid.
7. the production technology of hot-galvanized steel band according to claim 5, which is characterized in that the temperature of the zinc liquid be 480 ~
500℃。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910667326.2A CN110358903A (en) | 2019-07-23 | 2019-07-23 | A kind of production technology of hot-galvanized steel band |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910667326.2A CN110358903A (en) | 2019-07-23 | 2019-07-23 | A kind of production technology of hot-galvanized steel band |
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| CN110358903A true CN110358903A (en) | 2019-10-22 |
Family
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112742897A (en) * | 2020-12-22 | 2021-05-04 | 安徽天鸿新型钢结构材料有限公司 | Preparation method of corrosion-resistant steel coil |
| CN114000081A (en) * | 2021-11-08 | 2022-02-01 | 浙江金洲管道科技股份有限公司 | Galvanizing method for steel pipe for nuclear power |
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| CN101215682A (en) * | 2007-12-29 | 2008-07-09 | 浙江盛达铁塔有限公司 | Non-poaching-water common hot-dip galvanizing technique |
| CN101280401B (en) * | 2008-05-29 | 2010-09-15 | 上海永丰热镀锌有限公司 | Hot-dip galvanizing method for steel products |
| CN101948991A (en) * | 2010-09-21 | 2011-01-19 | 浙江华达钢业有限公司 | Corrosion-resistant hot galvanized steel plate and preparation method thereof |
| CN102451844A (en) * | 2010-10-29 | 2012-05-16 | 宝山钢铁股份有限公司 | Mechanical descaling method and device for cold-state band steel |
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| CN106222596A (en) * | 2016-08-31 | 2016-12-14 | 浙江海力股份有限公司 | A kind of environment-friendly type galvanizing by dipping no acidwashing craft |
| CN106498286A (en) * | 2016-12-01 | 2017-03-15 | 浙江东南金属薄板有限公司 | The production technology of galvanizing coil of strip |
| CN107904366A (en) * | 2017-11-21 | 2018-04-13 | 成都顺宏鑫机械有限公司 | Anti-oxidant transmission steel band production technology |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1036045A (en) * | 1988-03-24 | 1989-10-04 | 山东工业大学 | The plating aid electrolytic activation method hot plating technology of aluminium-zinc alloy |
| CN101215682A (en) * | 2007-12-29 | 2008-07-09 | 浙江盛达铁塔有限公司 | Non-poaching-water common hot-dip galvanizing technique |
| CN101280401B (en) * | 2008-05-29 | 2010-09-15 | 上海永丰热镀锌有限公司 | Hot-dip galvanizing method for steel products |
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| CN107904366A (en) * | 2017-11-21 | 2018-04-13 | 成都顺宏鑫机械有限公司 | Anti-oxidant transmission steel band production technology |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112742897A (en) * | 2020-12-22 | 2021-05-04 | 安徽天鸿新型钢结构材料有限公司 | Preparation method of corrosion-resistant steel coil |
| CN114000081A (en) * | 2021-11-08 | 2022-02-01 | 浙江金洲管道科技股份有限公司 | Galvanizing method for steel pipe for nuclear power |
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