Unit for producing radiation curing coating steel plate

Abstract

The utility model belongs to the technical field of steel processing, and particularly relates to a unit for producing a radiation curing coated steel plate, which comprises an inlet section, a leveling section, a withdrawal and straightening section, a roller coating section, a radiation curing section and an outlet section which are sequentially arranged, and the radiation curing section comprises a radiation curing device. According to the utility model, the roller coating section and the radiation curing section are additionally arranged on the basis of the existing bright annealing steel plate production unit, so that various functional coating products such as a high-corrosion-resistance zinc-aluminum-magnesium alloy coating, a color steel plate coating, a high-temperature-resistant and strong-alkali-resistant coating, a magnetic thermosensitive coating, a self-cleaning coating and a medical bioactive ceramic coating can be formed; according to the invention, various functional requirements of corrosion resistance, decoration and the like of the bright annealed steel plate can be obviously improved, various mechanical properties can be met, two functions of producing a radiation curing coating steel plate and the bright annealed steel plate can be realized, the operation rate of a unit is improved, multiple products can be produced by one unit, the additional value of the bright annealed steel plate is improved, and the production cost is reduced. Product switching is convenient, and short-process operation is achieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to steel processing technical field, especially relate to a unit for producing radiation solidification coating steel plate. BACKGROUND

[0002] In recent years, the continuous bright annealing steel plate production unit is increasingly mature, but the existing continuous annealing unit can only produce single bright annealing steel plate at present, and the corrosion resistance of the bright annealing steel plate is relatively poor, and the service life is shorter, which limits the application of the bright annealling steel plate, and some main applications need to be treated on the surface, such as electroplating, paint spraying, printing or electrophoretic coating process, therefore, how to flexibly adjust the product structure, carry out performance optimization and reduce production cost is an urgent problem to be solved. SUMMARY

[0003] In view of the above problems of the prior art, the utility model provides a unit for producing radiation solidification coating steel plate.

[0004] In order to achieve the above object, the technical scheme adopted is:

[0005] A unit for producing radiation solidification coating steel plate, comprising an inlet section, a leveling section, a tension and straightening section, a roll coating section, a radiation solidification section and an outlet section arranged in sequence, wherein the radiation solidification section comprises a radiation solidification device.

[0006] Based on the above technical scheme, the utility model can also be improved as follows:

[0007] Preferably, the leveling section comprises a leveler, the tension and straightening section comprises a tension and straightening machine, and the roll coating section comprises a roll coater.

[0008] More preferably, the leveler is a wet type leveler.

[0009] The above preferred technical scheme has the beneficial effects that the main function of the leveler is to eliminate the yield platform, adjust the surface roughness of the strip steel and improve the flatness of the strip steel, the leveler is provided with a desalted water or leveling liquid spraying circulating system, wet leveling can be realized, lubrication can be provided during the leveling process, the friction between the strip steel and the leveling roller is reduced, the leveling effect is improved, the surface defects are reduced, the strip steel can be cooled, the material performance change or deformation caused by overheating is prevented, impurities are removed, and the service life of the leveler is prolonged.

[0010] More preferably, the tension and straightening machine is a wet type tension and straightening machine.

[0011] The beneficial effects of the above preferred technical solutions are that the tension leveler is used for the tension straightening of the strip steel, and the device is used for eliminating various three-dimensional plate shape defects of the strip steel, such as double edge wave, single edge wave, middle wave, two-rib wave, warping, buckling and potential plate shape defects, etc. The strip steel will cause the above plate shape defects in the rolling process due to the poor roll shape and poor roll gap shape, etc. The defects are caused by the uneven longitudinal extension of the rolled piece in the width direction and the disorder of the rolling stress. In order to eliminate the plate shape defects of the strip steel and make the internal stress uniform, the strip steel needs to be corrected. The tension leveler is a device that produces plastic extension under the combined action of tension and continuous alternating bending to obtain good correction effect. The straightening unit is in the form of two rows of bending straightening assemblies and balancing roller devices. The strip steel is subjected to alternating deformation in the first stage bending deformation zone, so that the residual deformation of each part of the strip steel is uniformly distributed. The residual deformation disappears in the second stage straightening, so that various three-dimensional plate shape defects are corrected and the mechanical properties of the strip steel are improved. The wet tension leveler has the effects of lubrication, removal of surface impurities and improvement of surface quality, etc.

[0012] Preferably, a first squeezing device and a first drying device are sequentially arranged between the flattening section and the tension leveler section.

[0013] The beneficial effects of the above preferred technical solutions are that the tension leveler is used for the tension straightening of the strip steel, and the device is used for eliminating various three-dimensional plate shape defects of the strip steel, such as double edge wave, single edge wave, middle wave, two-rib wave, warping, buckling and potential plate shape defects, etc. The strip steel will cause the above plate shape defects in the rolling process due to the poor roll shape and poor roll gap shape, etc. The defects are caused by the uneven longitudinal extension of the rolled piece in the width direction and the disorder of the rolling stress. In order to eliminate the plate shape defects of the strip steel and make the internal stress uniform, the strip steel needs to be corrected. The tension leveler is a device that produces plastic extension under the combined action of tension and continuous alternating bending to obtain good correction effect. The straightening unit is in the form of two rows of bending straightening assemblies and balancing roller devices. The strip steel is subjected to alternating deformation in the first stage bending deformation zone, so that the residual deformation of each part of the strip steel is uniformly distributed. The residual deformation disappears in the second stage straightening, so that various three-dimensional plate shape defects are corrected and the mechanical properties of the strip steel are improved. The wet tension leveler has the effects of lubrication, removal of surface impurities and improvement of surface quality, etc.

[0014] Preferably, a second squeezing device and a second drying device are sequentially arranged between the tension leveler section and the roll coating section.

[0015] The beneficial effects of the above preferred technical solutions are that the second squeezing device removes the tension leveling liquid on the surface of the material by mechanical extrusion, reduces its content, and then the second drying device further evaporates and removes the residual liquid by heating, etc., to ensure that the material is dry when entering the roll coating section. This series of processing steps helps to improve the adhesion and quality of the coating, and ensures the performance and appearance of the final product.

[0016] Preferably, the roll coater is a horizontal roll coater.

[0017] The beneficial effects of the above preferred technical solutions are that the roll coating section includes a roll coater, which is used to roll the coating onto the strip steel. The thickness of the coating is preferably 15-40 microns. The roll coater is in the form of a horizontal roll coater, and the two coating heads are staggered above and below the left and right sides of the strip steel.

[0018] Preferably, the radiation curing device is an ultraviolet curing device.

[0019] More preferably, the ultraviolet curing device is a UV curing machine, which is provided with a plurality of opposite and staggered UV lamp tubes, and optionally a composite UV curing machine, which is provided with a plurality of opposite and staggered replaceable UV lamp tubes of two or more types of light sources, such as LED ultraviolet lamp tubes, mercury lamps, etc.

[0020] The beneficial effects of adopting the above preferred technical solutions are that the ultraviolet curing device has the advantages of fast curing speed, high efficiency, low energy consumption, wide application range, etc., and can meet the production requirements of high quality and high efficiency. Compared with traditional heat-cured paint, the process does not need to form a chemical conversion film on the surface of the steel plate first, then coat the paint, and then realize heat-cured coating. Only one-time coating of the paint is needed to form the final UV coating after UV curing. The UV radiation curing device radiates and cures the strip after the tension leveling. The ultraviolet curing device preferably uses a UV curing machine with two or more types of light sources that can be easily replaced. The UV lamp tubes of the UV curing machine are staggered. The coating is radiated by the light source and completes the cross-linking reaction within 2-3 seconds during the UV curing machine, and is converted from a liquid to a solid.

[0021] Preferably, a first tension roller is arranged between the inlet section and the flattening section.

[0022] The beneficial effects of adopting the above preferred technical solutions are that the first tension roller can control the tension of the strip during the flattening process, prevent the strip from wrinkling, running off, and other problems during the flattening process, and ensure the flattening quality of the strip.

[0023] Preferably, a second tension roller is arranged between the flattening section and the tension leveling section.

[0024] The beneficial effects of adopting the above preferred technical solutions are that the second tension roller can control the tension of the strip during the tension leveling process, prevent the strip from breaking, buckling, and other problems during the tension leveling process, and ensure the tension leveling quality of the strip.

[0025] Preferably, a third tension roller is arranged between the tension leveling section and the roller coating section.

[0026] The beneficial effects of adopting the above preferred technical solutions are that the third tension roller can control the tension of the strip during the roller coating process, prevent the strip from wrinkling, missing coating, and other problems during the roller coating process, and ensure the roller coating quality of the strip.

[0027] Preferably, a fourth tension roller is arranged between the radiation curing section and the outlet section.

[0028] The fourth tension roller can control the tension of the strip steel in the radiation curing process, prevent the strip steel from deforming and curing insufficiently in the radiation curing process, and ensure the radiation curing quality of the strip steel.

[0029] Preferably, a degreasing section, a continuous annealing section and a water quenching section are sequentially arranged between the inlet section and the flattening section.

[0030] Preferably, the inlet section comprises an uncoiler.

[0031] The two-step preferred technical solutions have the beneficial effects that the strip steel enters from the uncoiler of the inlet section, sequentially passes through the degreasing section, the continuous annealing section and the water quenching section, and then enters the flattening section, wherein the degreasing section can remove oil stains on the surface of the strip steel and improve the surface quality of the strip steel; the continuous annealing section can anneal the strip steel at high temperature, eliminate internal stress of the strip steel, and improve the mechanical properties of the strip steel; and the water quenching section can rapidly cool the strip steel, and these treatments can improve the quality and performance of the strip steel and provide a better basis for subsequent processing and use.

[0032] Preferably, the outlet section comprises a coiler.

[0033] Preferably, a first deflection roller is arranged between the third tension roller and the roll coater, and a second deflection roller is arranged between the fourth tension roller and the coiler.

[0034] Compared with the prior art, the utility model has the beneficial effects that:

[0035] The utility model discloses on the basis of the existing bright annealed steel plate production unit adds the roll coating section, the radiation curing section, can form high corrosion -resistant zinc aluminum magnesium alloy coating, color steel plate coating, high -temperature -resistant alkali -resistant coating, magnetic thermosensitive coating, self -cleaning coating, medical bio -active ceramic coating etc. various functional coating products, can obviously improve bright annealed steel plate with corrosion -resistant, decorative as the foundation many functional needs, satisfy each item mechanical performance simultaneously, can realize having production radiation curing coating steel plate, bright annealed steel plate two functions, improve the operation rate of unit, a unit multiple products, the bright annealed steel plate has added value, switches the product conveniently, realizes the same line short -process operation of terminal product from the original many production lines to complete on the process and production;

[0036] The utility model discloses a radiation curing coating is coated on bright annealing steel sheet, for example, can contain high aluminum (≥30%, mass percentage content), high magnesium (≥10%, mass percentage content), the rest is zinc coating, and through radiation curing in short time (≤5s) in continuous operation, zinc aluminum magnesium alloy coating product can significantly improve the corrosion resistance of bright annealing steel sheet, while meeting each mechanical performance, the comprehensive performance is close to hot-dip galvanizing aluminum magnesium alloy steel sheet (double side 275g / ㎡), so it is very important to produce zinc aluminum magnesium alloy coating steel sheet on continuous bright annealing steel sheet production line, and the good mechanical performance of continuous bright annealing base plate can also be fully played, and high aluminum high magnesium coating can break the limitation of ternary alloy liquid saturation of hot-dip galvanizing aluminum magnesium alloy, and in principle, each metal element component and other trace elements in zinc aluminum magnesium alloy coating can realize any proportion of deployment. The original bright annealing production line is used to the maximum extent, saves equipment investment cost, and the third tension roller is directly connected with the coiler, can realize the two functions of producing radiation curing coating steel sheet and bright annealing steel sheet, improves the operation rate of the unit, a unit produces multiple products, improves the added value of bright annealing steel sheet, switches the product conveniently, realizes short process operation. Under the same process condition, the production of multiple functional coating products can also be realized. BRIEF DESCRIPTION OF DRAWINGS

[0037] Figure 1 It is a structure schematic view of the unit for producing radiation curing coating steel sheet of the utility model;

[0038] Figure 2 It is a structure schematic view of the unit for producing bright annealing steel sheet of the utility model;

[0039] The figure sign is: 1, uncoiler, 2, first tension roller, 3, leveler, 4, first squeeze dry roller, 5, first hot air dryer, 6, second tension roller, 7, straightening and leveling machine, 8, second squeeze dry roller, 9, second hot air dryer, 10, strip steel, 11, third tension roller, 12, first deflection roller, 13, roll coater, 14, UV curing machine, 15, fourth tension roller, 16, second deflection roller, 17, coiler, 18, UV lamp tube. DETAILED DESCRIPTION

[0040] The utility model is described below in connection with examples, and the examples are only used to explain the utility model and are not used to limit the scope of the utility model.

[0041] In the description of the utility model, it is necessary to explain that the orientation or position relation indicated by the terms vertical, upper, lower and horizontal is based on the orientation or position relation shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0042] In the description of the utility model, it is also necessary to explain that, unless otherwise explicitly specified and limited, the terms setting, installation, connection, and connection should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or it can be indirectly connected through an intermediate medium, and it can be the communication between two elements. For ordinary skilled persons in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to the specific circumstances.

[0043] Reference Figure 1 A set for producing a radiation-cured coated steel sheet, comprising, in succession, an entry section, a levelling section, a tension levelling section, a roll coating section, a radiation curing section, an exit section, the radiation curing section comprising radiation curing means. As a preferred embodiment, the levelling section comprises a leveller 3, the tension levelling section comprises a tension leveller 7, and the roll coating section comprises a roll coater 13.

[0044] In this embodiment, the leveller 3 is a wet leveller.

[0045] In this embodiment, the tension leveller 7 is a wet tension leveller. The tension leveller 7 is a prior art, such as a tension leveller main structure comprising a rack, two sets of upper bending roller groups, two sets of lower bending roller groups, two sets of anti-lateral bending straightening roller groups, three sets of straightening rollers, a lower roller system lifting device and a hydraulic roller changing device, etc.

[0046] As a preferred embodiment, a first wringing device and a first drying device are sequentially arranged between the levelling section and the tension levelling section.

[0047] In this embodiment, the first wringing device is a first wringing roller 4, and the first drying device is a first hot air dryer 5.

[0048] As a preferred embodiment, a second wringing device and a second drying device are sequentially arranged between the tension levelling section and the roll coating section.

[0049] In this embodiment, the second wringing device is a second wringing roller 8, and the second drying device is a second hot air dryer 9.

[0050] In the embodiment, the roller coater 13 is a horizontal roller coater. The roller coating section includes a roller coater, which can be a conventional roller coater 13, such as a roller coater 13 mainly composed of a base, left and right coating heads, a coating head quick opening device, a transmission device and other components.

[0051] In an alternative embodiment, the radiation curing device is an ultraviolet curing device. More preferably, the ultraviolet curing device is a UV curing machine 14, which is provided with a plurality of opposite and staggered UV lamp tubes 18, Figure 1 In the embodiment, the UV curing machine 14 is provided with four groups of UV radiation sources arranged on the upper and lower sides of the strip steel 10. Alternatively, the UV curing machine can be a composite type, which is provided with a plurality of opposite and staggered UV lamp tubes of two or more types that can be easily replaced, such as LED ultraviolet lamp tubes on the upper side and mercury lamps on the lower side.

[0052] As a preferred embodiment, a first tension roller 2 is arranged between the entry section and the flattening section.

[0053] In an alternative embodiment, a second tension roller 6 is arranged between the flattening section and the tension leveling section.

[0054] In the embodiment, a third tension roller 11 is arranged between the tension leveling section and the roller coating section.

[0055] In the embodiment, a fourth tension roller 15 is arranged between the radiation curing section and the exit section.

[0056] In the embodiment, a degreasing section, a continuous annealing section and a water quenching cooling section are sequentially arranged between the entry section and the flattening section, i.e., the entire machine train for producing radiation curing coated steel plates sequentially includes an entry section, a degreasing section, a continuous annealing section, a water quenching cooling section, a flattening section, a tension leveling section, a roller coating section, a radiation curing section and an exit section.

[0057] In the embodiment, the entry section includes an uncoiler 1.

[0058] In the embodiment, the exit section includes a coiler 17.

[0059] In the embodiment, a first deflection roller 12 is arranged between the third tension roller 11 and the roller coater 13, and a second deflection roller 16 is arranged between the fourth tension roller 15 and the coiler 17.

[0060] In the embodiment, a degreasing section, a continuous annealing section and a water quenching cooling section are sequentially arranged between the entry section and the flattening section, i.e., the entire machine train for producing radiation curing coated steel plates sequentially includes an entry section, a degreasing section, a continuous annealing section, a water quenching cooling section, a flattening section, a tension leveling section, a roller coating section, a radiation curing section and an exit section, and the sections are connected by the strip steel 10.

[0061] The specific working process of this utility model is as follows:

[0062] The strip steel 10 enters from the uncoiler 1 at the inlet section, passes through the degreasing section to remove the grease from the surface, and then enters the continuous annealing section for high-temperature annealing to eliminate the internal stress of the material. Then it is rapidly cooled in the water quenching cooling section to enhance the hardness and strength of the material.

[0063] Next, the strip 10 passes through the first tension roller 2 and enters the leveling section. The yield plateau is eliminated by the wet leveling machine 3, the surface roughness is adjusted, the zinc flowers are flattened and the straightness is improved. The leveled strip 10 passes through the first squeeze roller 4 to remove excess leveling liquid, and then passes through the first hot air dryer 5 to dry thoroughly.

[0064] Subsequently, the strip 10 passes through the second tension roller 6 and enters the tension leveling section. Various three-dimensional plate shape defects are eliminated by the wet tension leveling machine 7 to make it reach the ideal state. After tension leveling, the strip 10 passes through the second squeeze roller 8 again to remove the tension leveling liquid, and then is further dried in the second hot air dryer 9.

[0065] After drying, the strip steel 10 passes through the third tension roller 11 and the first steering roller 12 into the horizontal roller coating machine 13, which evenly coats the strip steel 10 with a coating. After coating, the strip steel 10 passes through the leveling area.

[0066] Next, the strip 10 enters the radiation curing section, where the UV curing machine 14 uses four sets of staggered UV lamps 18 to rapidly irradiate the strip 10 with ultraviolet light, so that the coating completes the cross-linking reaction in just 2 to 3 seconds, changing from liquid to solid.

[0067] Finally, the strip 10 enters the exit section through the fourth tension roller 15 and is wound up by the coiler 17, completing the entire production process and obtaining the radiation-cured coated steel sheet.

[0068] Of course, such as Figure 2 As shown, if the strip 10 does not need to be coated, when producing bright annealed steel plates, after passing through the inlet section, degreasing section, continuous annealing section, water quenching section, leveling section, and tension leveling section, it can be directly wound up at the coiler 17 after the third tension roller 11.

[0069] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A line for producing a radiation-cured coated steel sheet, characterized in that, The strip coating machine comprises an inlet section, a flattening section, a straightening section, a roller coating section, a radiation curing section and an outlet section arranged in sequence. The inlet section comprises an uncoiler (1). The flattening section comprises a flattening mill (3). The straightening section comprises a straightening mill (7), which comprises a rack, two sets of upper bending roller groups, two sets of lower bending roller groups, two sets of anti-cross-bending straightening roller groups, three sets of straightening rollers, a lower roller system lifting device and a hydraulic roller changing device. The roller coating section comprises a roller coating machine (13), which comprises a base, left and right coating heads, a coating head quick opening device and a transmission device. The radiation curing section comprises a radiation curing device, which is an ultraviolet curing device, and a plurality of UV lamp tubes (18) are arranged oppositely and staggeredly in the ultraviolet curing device. The outlet section comprises a coiler (17).

2. The line for producing a radiation-cured coated steel sheet according to claim 1, characterized in that, The flattening section and the straightening section are sequentially provided with a first squeezing device and a first drying device.

3. The line for producing a radiation-cured coated steel sheet according to claim 1, characterized in that, The straightening section and the roller coating section are sequentially provided with a second squeezing device and a second drying device.

4. The unit for producing a radiation-cured coated steel sheet according to claim 1, characterized in that, The first tension roller (2) is arranged between the inlet section and the flattening section.

5. The unit for producing a radiation cured coated steel sheet according to claim 1, characterized in that, The second tension roller (6) is arranged between the flattening section and the straightening section.

6. The line for producing a radiocurable coated steel sheet according to claim 5, characterized in that, The third tension roller (11) is arranged between the straightening section and the roller coating section.

7. The line for producing a radiocurable coated steel sheet according to claim 6, characterized in that, The fourth tension roller (15) is arranged between the radiation curing section and the outlet section.

8. The line for producing a steel sheet with a radiation-cured coating according to any one of claims 1 to 7, characterized in that, The defatting section, the continuous annealing section and the water quenching section are sequentially arranged between the inlet section and the flattening section.

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