CN115889124A - Production process of single-coating color steel belt - Google Patents
Production process of single-coating color steel belt Download PDFInfo
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- CN115889124A CN115889124A CN202211479581.2A CN202211479581A CN115889124A CN 115889124 A CN115889124 A CN 115889124A CN 202211479581 A CN202211479581 A CN 202211479581A CN 115889124 A CN115889124 A CN 115889124A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
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Abstract
The invention relates to the technical field of color steel strip production, in particular to a production process of a single-coating color steel strip, which comprises the processes of pretreatment, chemical coating and coating curing; the pretreatment process comprises the following steps: after entering a carrier roller, a steel plate is sequentially sprayed, squeezed, degreased by a roller brush, blown-water double squeezed, washed I, squeezed, washed II, squeezed, pure-water sprayed, washed III and blown-water double squeezed, and a front brush roller is not used; the chemical coating treatment process comprises chemical coating, drying and air-cooling, wherein a coating roller adopts front and back surfaces for coating simultaneously, a front surface and a back surface are used for roller coating, a vertical double-roller coater is adopted, desalted water is used for replacing passivation liquid at the front surface, and the back surface is normally used; the coating and curing process comprises primary coating, primary coating curing, primary coating forced cooling, finish coating curing and finish coating forced cooling, wherein a primary coating oven is arranged below 100 ℃, back paint coating is arranged in finish coating, a finish coating furnace is normally used, and other coating machines are all cut out; the temperature of each area of the primary coating curing furnace and the finish coating curing furnace is set below 100 ℃. The invention has the advantages of energy saving, consumption reduction, high efficiency and stability.
Description
Technical Field
The invention relates to the technical field of colored steel strip production, in particular to a production process of a single-coating colored steel strip.
Background
The fingerprint-resistant plate is a composite coating plate obtained by performing fingerprint-resistant treatment on the surface of a galvanized plate. The fingerprint-resistant steel plate is the material which passes the environmental protection certification at first, and fingerprints cannot be left due to the fact that the surface of the fingerprint-resistant steel plate is touched by a clean finger, so that the fingerprint-resistant steel plate is named as fingerprint-resistant, and the surface of the fingerprint-resistant steel plate is smooth and flat. In the production process of household electrical appliances, many parts are difficult to avoid the phenomenon that sweat stains on hands of workers form pollution on the surfaces of parts and influence the attractiveness after the parts are touched by the workers for many times based on process requirements, so that the fingerprint-resistant plate is researched and developed.
The fingerprint-resistant aluminized zinc plate is subjected to a color coating production process, and a layer of epoxy back paint is singly coated on the back of the fingerprint-resistant aluminized zinc plate to produce a single-coating color-coated plate, so that the problem of poor bonding performance of the fingerprint-resistant aluminized zinc plate can be well solved.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a production process of a single-coating color steel belt, which ensures that high-quality qualified products are produced, keeps the fingerprint-resistant coating on the front side intact and has good adhesive property on the back side.
The invention is realized by the following technical scheme:
providing a production process of a single-coating color steel strip, which comprises a pretreatment process, a chemical coating process and a coating curing process;
the pretreatment process comprises the following steps: the steel sheet gets into spraying, wringing, roller brush degrease, roller brush machine I and II, blows two wringing of water, washing I, wringing, washing II, wringing, pure water spray washing III, blows two wringing of water behind the bearing roller in proper order, wherein: the front brush roll is not used;
the chemical coating treatment process comprises chemical coating, drying and air-cooling, wherein: when in chemical coating, a coating roller of the chemical coating machine adopts a mode of coating front and back surfaces by two rollers at the same time, the front surface and the back surface are coated by rollers, a vertical double-roller type roller coating machine is adopted, desalted water is used for replacing passivation liquid on the front surface, and the back surface is normally used;
the coating curing process comprises primary coating, primary coating curing, primary coating forced cooling, deviation rectifying, finish coating curing and finish coating forced cooling, wherein: setting the primary coating oven below 100 ℃, setting the back paint coating at the finish coating, normally using the finish coating oven, and cutting all other coating machines; the temperature of each area of the primary coating curing furnace and the finish coating curing furnace is set below 100 ℃.
Furthermore, in the chemical coating treatment process, a coupler of a front passivation coating roller of the chemical coating machine is removed, and the coating roller is changed into a driven wheel. The coupler of the front passivation coating roller is removed, and the coating roller is changed into a driven wheel, so that the labor capacity of workers can be reduced.
Furthermore, the primary coating curing furnace and the finish coating curing furnace consist of 4-6 furnace areas, and each furnace area is provided with a circulating fan, a burner, a group of temperature measuring thermocouples and a wind mixing chamber.
The invention has the beneficial effects that:
the process of the invention is carried out by alkaline cleaning, degreasing and cutting in a pretreatment process, thereby preventing the fingerprint-resistant coating on the front side from being damaged; the front brush roll is cut out without throwing, so that the front brush roll is prevented from being damaged by brushing, and the front fingerprint-resistant coating is scraped; in the chemical coating process, a mode of coating the front side and the back side by two rollers at the same time is adopted, and a vertical double-roller coater is adopted for roll coating the front side and the back side, so that the problem of edge wave roll coating can be effectively solved; the passivation solution on the front surface is replaced by desalted water, so that the damage of the coating roller due to dry grinding is avoided. Or the coupler of the front passivation coating roller is removed, and the coating roller is changed into a driven wheel, so that the labor capacity of workers can be reduced. In the coating process, the back paint coating is set in the finish coating, all other coating machines are cut out, in the curing process, the burner of the primary coating oven is completely closed, the temperature of each zone is set to be lower than 100 ℃, and the finish coating oven is normally used, so that the consumption of natural gas can be obviously reduced, and the production cost is reduced.
The production process of the single-coating colored steel strip can realize the stable operation of the single-coating colored steel strip in production, produce high-quality qualified products, ensure the intact fingerprint-resistant coating on the front side and the good bonding performance on the back side, save energy, reduce consumption, and have high efficiency and stability.
Drawings
FIG. 1 is an overall flow chart of the present invention.
Detailed Description
In order to clearly illustrate the technical features of the present solution, the present solution is explained below by way of specific embodiments.
A production process of a single-coating color steel strip comprises a pretreatment process, a chemical coating process and a coating curing process. The pretreatment process section is subjected to alkaline washing, degreasing and cutting, so that the waste of alkali liquor is saved, and the front brush roll is not used; in the chemical treatment process, the front side is not coated with the passivation solution, and the back side is normally used; the back paint coating is arranged on the finish coating, and the rest parts are all cut out; in the coating curing process, the primary coating oven is set to be below 100 ℃, so that natural gas is saved; the operation cost can be greatly reduced.
The invention provides a production process of a single-coating color steel strip, which runs through the concept of energy conservation and consumption reduction in the whole process, and is characterized in that:
the pretreatment process comprises the following steps: the steel sheet gets into spraying, wringing, roller brush degrease, roller brush machine I and II, blows two wringing of water, washing I, wringing, washing II, wringing, pure water spray washing III, blows two wringing of water behind the bearing roller in proper order, wherein: the front brush roller is not used.
The chemical coating treatment process comprises chemical coating, drying and air-cooling, wherein: when in chemical coating, the coating roller of the chemical coating machine adopts a mode of coating front and back surfaces by two rollers at the same time, the front surface and the back surface are coated by rollers, a vertical double-roller type roller coating machine is adopted, desalted water is used for replacing passivation liquid on the front surface, and the back surface is normally used.
The coating curing process comprises primary coating, primary coating curing, primary coating forced cooling, deviation rectifying, finish coating curing and finish coating forced cooling, wherein: setting the primary coating oven below 100 ℃, setting the back paint coating at the finish coating, normally using the finish coating oven, and cutting all other coating machines; the temperature of each area of the primary coating curing furnace and the finish coating curing furnace is set below 100 ℃. The primary coating curing furnace and the finish coating curing furnace consist of 4-6 furnace areas, and each furnace area is provided with a circulating fan, a burner, a group of temperature measuring thermocouples and a wind mixing chamber.
In the chemical coating treatment process, the passivation solution on the front surface is replaced by desalted water, so that the damage of the coating roller due to dry grinding is avoided. Or the coupler of the front passivation coating roller of the chemical coating machine can be removed, and the coating roller is changed into a driven wheel.
The aluminum-zinc plated raw material coil enters an uncoiler, passes through a welding machine (riveting), then enters a flatting machine, enters a tension roller, enters an inlet loop and then enters the tension roller; the specification of the raw materials is 700-1260 mm wide and 0.3-1.2 mm thick; the steel strip coming out of the loop enters a degreasing section and then enters a cleaning section.
And the alkali-eluted grease is cut out in the pretreatment process section and is not used. The front brush roll is opened and is not used, so that the front fingerprint-resistant coating is prevented from being scratched, and the back brush roll is normally used. The control indexes of the pretreatment in operation are as follows:
the brush roll squeezing roll is normally used, and the pressure is 0.3-0.4MPa; the ratio of desalted water to the original passivation solution is controlled to be 4:1, controlling the error within 5%; and (3) the steel strip which is pretreated enters a chemical coating process section through a hot air bellow, and is subjected to chemical coating by a chemical coating machine → a drying furnace → air cooling and cooling.
The chemical coating adopts a mode of coating front and back surfaces by two rollers at the same time, the front and back surfaces are coated by rollers, a vertical double-roller coater is adopted, and a back surface passivation solution coating roller is normally used; the passivation solution on the front surface is replaced by desalted water, so that the damage of the coating roller due to dry grinding is avoided. Or the coupler of the front passivation coating roller is removed and the coating roller is changed into a driven wheel.
The control indexes of the running chemical coating process are as follows:
the steel strip from the chemical coating process enters a coating process section and enters the primary coating → primary coating curing → primary coating strong cooling → deviation rectifying → fine coating curing → fine coating strong cooling. The back paint coating is arranged on the finish coating, and all other coating machines are cut out.
The coating process control indexes in the operation of the coating machine are as follows:
the burner of the primary coating curing furnace is closed, and the fine coating curing furnace is normally opened, so as to achieve the purposes of saving natural gas and reducing cost. The furnace temperature process indexes of each region of the curing furnace are specifically controlled as follows:
at the export inspection desk, inspect the surface defect condition, cut a sample at the export simultaneously and do the performance detection, the product index requirement specifically as follows:
the invention overcomes the defect that the single coating and single drying process is realized on the two-coating and two-drying production line, and simultaneously, the process control of energy conservation and consumption reduction is adopted. The pretreatment process comprises the following steps: steel plate entering → carrier roller → spray degreasing → squeezing → roller brush degreasing → roller brush machine I, II → double squeezing (water blowing) → water washing I → squeezing → water washing II → squeezing → water washing III (pure water spraying) → double squeezing (water blowing) → steel plate leading out, wherein alkali washing degreasing is cut out, and the front brush roller is not used; chemical coating process: the chemical coating machine → a drying furnace → air cooling, the chemical coating adopts a mode that the front and the back surfaces are coated by two rollers simultaneously, the front and the back surfaces are coated by rollers, a vertical double-roller coater is adopted, the problem of edge wave roller coating can be effectively solved, the front surface is not coated with passivation liquid, and the back surface is normally used; the coating process comprises the following steps: the process enters the primary coating → primary coating curing → primary coating strong cooling → deviation correction → finish coating curing → finish coating strong cooling, the back paint coating is arranged on the finish coating, and all other coating machines are cut out.
And (3) a curing process: the primary coating curing furnace and the finish coating curing furnace consist of 4-6 furnace areas, each furnace area is provided with a circulating fan, a burner, a group of temperature thermocouples and a wind mixing chamber, the primary coating oven burner is completely closed, the temperature of each area is set to be below 100 ℃, and the finish coating furnace is normally put into use.
Of course, the above description is not limited to the above examples, and the undescribed technical features of the present invention can be implemented by or using the prior art, and will not be described herein again; while the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes, modifications, additions and substitutions may be made without departing from the spirit of the invention and the scope of the invention as defined in the accompanying claims.
Claims (3)
1. A production process of a single-coating color steel strip is characterized by comprising the following steps: comprises a pretreatment process, a chemical coating process and a coating curing process;
the pretreatment process comprises the following steps: the steel sheet gets into to spray, wringing, roller brush degrease, roller brush machine I and II, blow two wringing of water, washing I, wringing, washing II, wringing, pure water spray water wash III, blow two wringing of water after getting into the bearing roller in proper order, wherein: the front brush roller is not used;
the chemical coating treatment process comprises chemical coating, drying and air-cooling, wherein: when in chemical coating, a coating roller of the chemical coating machine adopts a mode of coating front and back surfaces by two rollers at the same time, the front surface and the back surface are coated by rollers, a vertical double-roller type roller coating machine is adopted, desalted water is used for replacing passivation liquid on the front surface, and the back surface is normally used;
the coating curing process comprises primary coating, primary coating curing, primary coating forced cooling, deviation rectifying, finish coating curing and finish coating forced cooling, wherein: setting the primary coating oven below 100 ℃, setting the back paint coating at the finish coating, normally using the finish coating oven, and cutting all other coating machines; the temperature of each area of the primary coating curing furnace and the finish coating curing furnace is set below 100 ℃.
2. A process for the production of a single-coated coloured steel strip according to claim 1, characterised in that: in the chemical coating treatment process, a coupler of a front passivation coating roller of a chemical coating machine is removed, and the coating roller is changed into a driven wheel.
3. A process for the production of a single-coated coloured steel strip according to claim 1, characterised in that: the primary coating curing furnace and the finish coating curing furnace consist of 4-6 furnace zones, and each furnace zone is provided with a circulating fan, a burner, a group of temperature thermocouples and a wind mixing chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211479581.2A CN115889124A (en) | 2022-11-24 | 2022-11-24 | Production process of single-coating color steel belt |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211479581.2A CN115889124A (en) | 2022-11-24 | 2022-11-24 | Production process of single-coating color steel belt |
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| CN115889124A true CN115889124A (en) | 2023-04-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202211479581.2A Pending CN115889124A (en) | 2022-11-24 | 2022-11-24 | Production process of single-coating color steel belt |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105881032A (en) * | 2016-04-01 | 2016-08-24 | 窦心涛 | Color coating production method and production device for steel plates |
| CN210700842U (en) * | 2019-06-14 | 2020-06-09 | 赛高粉末技术（滨州）有限公司 | Chemical layer conversion treatment device suitable for powder electrostatic coating color-coated sheet |
| CN210700698U (en) * | 2019-06-14 | 2020-06-09 | 赛高粉末技术（滨州）有限公司 | Rapid curing device after electrostatic coating of powder on surface of strip steel |
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2022
- 2022-11-24 CN CN202211479581.2A patent/CN115889124A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105881032A (en) * | 2016-04-01 | 2016-08-24 | 窦心涛 | Color coating production method and production device for steel plates |
| CN210700842U (en) * | 2019-06-14 | 2020-06-09 | 赛高粉末技术（滨州）有限公司 | Chemical layer conversion treatment device suitable for powder electrostatic coating color-coated sheet |
| CN210700698U (en) * | 2019-06-14 | 2020-06-09 | 赛高粉末技术（滨州）有限公司 | Rapid curing device after electrostatic coating of powder on surface of strip steel |
Non-Patent Citations (1)
| Title |
|---|
| 陈守群: "《2006年全国冷轧板带生产技术交流会论文集》" * |
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