CN115233129A - Control method and device for hot galvanizing of strip steel and strip steel - Google Patents
Control method and device for hot galvanizing of strip steel and strip steel Download PDFInfo
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- CN115233129A CN115233129A CN202210843630.XA CN202210843630A CN115233129A CN 115233129 A CN115233129 A CN 115233129A CN 202210843630 A CN202210843630 A CN 202210843630A CN 115233129 A CN115233129 A CN 115233129A
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- 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
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- 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
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Abstract
The invention discloses a control method and a device for hot galvanizing of strip steel and strip steel, wherein the method comprises the following steps: obtaining the target waviness of the strip steel to be galvanized; acquiring a preset relational expression between the target waviness and the galvanizing process parameters; obtaining a plurality of groups of process data of the galvanizing process parameters according to the target waviness and the preset relational expression; and controlling the plating of a zinc layer to the strip steel to be galvanized according to target process data in the plurality of sets of process data. The control method of the invention is further optimized in the process data which can reach the target waviness, and can determine more optimized target process data so as to reduce the waviness of the strip steel in the hot galvanizing process; meanwhile, the control method can be realized by adopting the equipment and the process conditions of the conventional hot galvanizing production line, and has stronger applicability and favorable popularization.
Description
Technical Field
The application relates to the technical field of strip steel galvanizing control, in particular to a strip steel and strip steel hot galvanizing control method and device.
Background
The hot-dip galvanized steel strip is widely applied to outer plate parts of high-end automobile brands, and the distinctness of image after coating becomes one of key indexes which are generally concerned by various automobile factories. The appearance quality of the paint is influenced by the surface appearance of the cold-rolled hot-dip galvanized strip steel besides the influence of the painting process. Generally, after hot-dip galvanized steel strips are painted, a paint film can cover and eliminate the surface roughness, and the part with longer wave length (1-10 mm) can be remained on the surface, even more obviously. The surface waviness of the cold-rolled steel strip is therefore decisive for the appearance of the paint. The waviness of the surface of a cold-rolled hot-dip galvanized steel strip is an important index for evaluating the surface quality, and the lower the waviness of the surface of the steel strip is, the better the quality of the painted appearance is. At present, the waviness of the surface of the zinc steel is mainly influenced by a hot-dip galvanizing process, so that the waviness of the surface of the zinc steel cannot meet the quality requirement.
Therefore, how to reduce the waviness of the strip steel in the hot galvanizing process is a technical problem to be solved urgently at present.
Disclosure of Invention
The control method and the control device for hot galvanizing of the strip steel and the strip steel reduce the waviness of the strip steel in the hot galvanizing process.
The embodiment of the invention provides the following scheme:
in a first aspect, an embodiment of the present invention provides a method for controlling hot dip galvanizing of strip steel, where the method includes:
obtaining the target waviness of the strip steel to be galvanized;
acquiring a preset relational expression between the target waviness and the galvanizing process parameters;
obtaining a plurality of groups of process data of the galvanizing process parameters according to the target waviness and the preset relational expression;
and controlling the plating of a zinc layer to the strip steel to be galvanized according to target process data in the plurality of sets of process data.
In an optional embodiment, the galvanizing process parameters include an air knife distance D, an air knife height H and a stabilizing roller Depth, and the obtaining the preset relation between the target waviness and the galvanizing process parameters includes:
acquiring preset roughness of a working surface of a target roller, wherein the target roller is a roller positioned on a rack for rolling the tail end of the strip steel to be galvanized;
obtaining a first preset coefficient and a second preset coefficient according to the preset roughness;
and obtaining the preset relational expression according to a formula D multiplied by ln (H multiplied by Depth) less than or equal to (Wsa-b)/a, wherein Wsa is the target waviness, a is a first preset coefficient, and b is a second preset coefficient.
In an optional embodiment, the obtaining a first preset coefficient and a second preset coefficient according to the preset roughness includes:
according to the formula a = -0.00044Ra 2 +0.00297Ra-0.00067 to obtain the first preset coefficient;
according to the formula b =0.03764Ra 2 -0.23352ra +0.23885, obtaining said second preset coefficient, wherein Ra is said preset roughness.
In an optional embodiment, the obtaining multiple sets of process data of the galvanizing process parameters according to the target waviness and the preset relational expression includes:
obtaining the adjustment interval of each parameter in the galvanizing process parameters;
judging whether the target waviness and the parameter values of all the adjusting intervals meet the preset relational expression or not;
and if so, correspondingly obtaining the multiple groups of process data according to the parameter values meeting the preset relational expression.
In an alternative embodiment, the controlling the plating of the zinc layer to the steel strip to be galvanized according to the target process data in the plurality of sets of process data comprises:
acquiring an air knife distance threshold value, an air knife height threshold value and a stabilizing roller depth threshold value;
determining the target process data in the plurality of sets of process data based on the air knife distance threshold, the air knife height threshold, and the stabilizing roller depth threshold;
and controlling the air knife and the stabilizing roller to be positioned at the target position according to the target process data, and drawing the strip steel to be galvanized with the zinc coating layer.
In an alternative embodiment, the determining the target process data in the plurality of sets of process data according to the gas knife distance threshold, the gas knife height threshold, and the stabilizing roller depth threshold comprises:
acquiring a preset priority of the galvanizing process parameters;
according to the preset priority, the air knife distance threshold, the air knife height threshold and the stabilizing roller depth threshold, sequentially determining an air knife distance value, an air knife height value and a stabilizing roller depth value in the multiple groups of process data;
and obtaining the target process data according to the air knife distance value, the air knife height value and the stable roller depth value.
In a second aspect, embodiments of the present invention further provide a steel strip comprising a substrate and a zinc layer, wherein the zinc layer is coated on the substrate by the control method according to any one of the first aspect.
In a third aspect, an embodiment of the present invention further provides a control device for hot dip galvanizing of strip steel, where the device includes:
the first acquisition module is used for acquiring the target waviness of the strip steel to be galvanized;
the second acquisition module is used for acquiring a preset relational expression between the target waviness and the galvanizing process parameters;
the obtaining module is used for obtaining a plurality of groups of process data of the galvanizing process parameters according to the target waviness and the preset relational expression;
and the control module is used for controlling the galvanized layer to be plated on the strip steel to be galvanized according to target process data in the plurality of groups of process data.
In an alternative embodiment, the galvanizing process parameters include a gas knife distance D, a gas knife height H, and a stabilizing roller Depth, and the second acquiring module includes:
the first obtaining submodule is used for obtaining the preset roughness of a working surface of a target roller, wherein the target roller is a roller positioned on a rack at the tail end of the strip steel to be galvanized;
the first obtaining submodule is used for obtaining a first preset coefficient and a second preset coefficient according to the preset roughness;
and the second obtaining submodule is used for obtaining the preset relational expression according to a formula D multiplied by ln (H multiplied by Depth) less than or equal to (Wsa-b)/a, wherein Wsa is the target waviness, a is a first preset coefficient, and b is a second preset coefficient.
In an alternative embodiment, the first obtaining submodule includes:
a first obtaining unit configured to obtain a first value in accordance with formula a = -0.00044Ra 2 +0.00297Ra-0.00067 to obtain the first preset coefficient;
a second obtaining unit for obtaining 0.03764Ra according to the formula b = 3242 2 -0.23352ra +0.23885, where Ra is said preset roughness.
In an alternative embodiment, the obtaining module includes:
the second obtaining submodule is used for obtaining the adjusting interval of each parameter in the galvanizing technological parameters;
the judging submodule is used for judging whether the target waviness and the parameter values of all the adjusting sections meet the preset relational expression or not;
and the third obtaining submodule is used for correspondingly obtaining the multiple groups of process data according to the parameter values meeting the preset relational expression when the target waviness and the parameter values of all the adjustment intervals meet the preset relational expression.
In an alternative embodiment, the control module includes:
the third obtaining submodule is used for obtaining an air knife distance threshold, an air knife height threshold and a stabilizing roller depth threshold;
a determining submodule for determining the target process data from the plurality of sets of process data based on the air knife distance threshold, the air knife height threshold, and the stabilizing roller depth threshold;
and the traction submodule is used for controlling the air knife and the stabilizing roller to be positioned at a target position according to the target process data and dragging the galvanized steel strip to be galvanized with the galvanized layer.
In an optional embodiment, the determining sub-module includes:
the acquisition unit is used for acquiring the preset priority of the galvanizing process parameters;
the determining unit is used for sequentially determining an air knife distance value, an air knife height value and a stabilizing roller depth value in the multiple groups of process data according to the preset priority, the air knife distance threshold, the air knife height threshold and the stabilizing roller depth threshold;
and the third obtaining unit is used for obtaining the target process data according to the air knife distance value, the air knife height value and the stable roller depth value.
In a fourth aspect, embodiments of the present invention also provide an electronic device, including a processor and a memory, the memory being coupled to the processor, the memory storing instructions that, when executed by the processor, cause the electronic device to perform the steps of the method of any one of the first aspects.
In a fifth aspect, the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program is used to implement the steps of the method in any one of the first aspect when executed by a processor.
Compared with the prior art, the control method and the control device for hot galvanizing of the strip steel and the strip steel have the following advantages that:
the method comprises the steps of obtaining a target waviness of the strip steel to be galvanized, obtaining a preset relational expression of the target waviness and galvanizing process parameters, calculating through the preset relational expression to obtain multiple groups of process data meeting the target waviness requirement, screening out the target process data through the multiple groups of process data, controlling the galvanized layer to be galvanized on the strip steel to be galvanized, further optimizing the process data capable of achieving the target waviness, and determining more optimized target process data to reduce the waviness of the strip steel in the hot galvanizing process; meanwhile, the control method can be realized by adopting the equipment and process conditions of the conventional hot galvanizing production line, and has stronger applicability and favorable popularization.
Drawings
In order to more clearly illustrate the embodiments of the present specification or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present specification, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a flowchart of a control method for hot dip galvanizing strip steel according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a hot dip galvanizing line apparatus according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a control device for hot galvanizing of strip steel according to an embodiment of the present invention.
Description of reference numerals: 1-steel strip to be galvanized, 2-steel strip surface coating, 3-air knife, 4-zinc pot, 5-zinc liquid, 6-sink roll and 7-stabilizing roll.
Detailed Description
In the following, the technical solutions in the embodiments of the present invention will be clearly and completely described with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments, and all other embodiments obtained by a person skilled in the art based on the embodiments of the present invention belong to the protection scope of the embodiments of the present invention.
Referring to fig. 1, fig. 1 is a flowchart of a control method for hot galvanizing strip steel according to an embodiment of the present invention, where the method includes:
s11, obtaining the target waviness of the strip steel to be galvanized.
Specifically, the target waviness may be a maximum waviness value that can be allowed by the quality requirement of the strip steel to be galvanized, and may be generally determined by the quality standard of the product or the quality requirement of the customer, and the step S12 is performed after the target waviness is obtained.
And S12, acquiring a preset relational expression of the target waviness and the galvanizing technological parameters.
Specifically, referring to fig. 2, in the hot galvanizing process, after being annealed in an annealing furnace, a strip steel 1 to be galvanized with a certain surface morphology, which is rolled by a cold rolling mill, enters a zinc pot 4 to perform a physical and chemical reaction with a high-temperature zinc bath 5, after being treated by a hot dip galvanizing process, a metal coating is formed on the surface of the strip steel, and the strip steel leaves the zinc pot after passing through a sink roll 6 and at least one stabilizing roll 7 which are immersed in the zinc pot 4, and compressed air with a certain air pressure is blown to the zinc bath on the surface of the strip steel through an air knife 3 to control the coating thickness of the zinc coating.
The galvanizing technological parameters generally comprise air knife distance, air knife height and stabilizing roller depth, the air knife distance is the linear distance between an air knife and the surface of the strip steel along the air blowing direction, the air knife height is the vertical distance between the air knife and the liquid level of a zinc pot, the stabilizing roller depth is the vertical distance between the stabilizing roller and the liquid level of the zinc pot, and the three galvanizing technological parameters have certain influence on the waviness of the strip steel, so that the target waviness has a corresponding relation with the galvanizing technological parameters, and a preset relational expression can be obtained according to the corresponding relation.
In a specific embodiment, the galvanizing process parameters include an air knife distance D, an air knife height H and a stabilizing roll Depth, and the preset relational expression of the target waviness and the galvanizing process parameters is obtained and includes:
acquiring preset roughness of a working surface of a target roller, wherein the target roller is a roller positioned on a rack at the tail end of a strip steel to be galvanized; obtaining a first preset coefficient and a second preset coefficient according to the preset roughness; and obtaining a preset relational expression according to a formula D multiplied by ln (H multiplied by Depth) less than or equal to (Wsa-b)/a, wherein Wsa is the target waviness, a is a first preset coefficient, and b is a second preset coefficient.
Specifically, the strip steel to be galvanized is formed by sequentially rolling through a plurality of rolling stands of a rolling mill, and the texture on the surface of a roller on each rolling stand is transferred to the surface of the strip steel to be galvanized in the rolling process, so that the preset roughness of the working surface of the target roller has certain influence on the waviness of the surface of the strip steel. The method comprises the steps that a first preset coefficient and a second preset coefficient are obtained through preset roughness, the influence of the roughness of a working surface of a roller on the waviness of a strip steel to be galvanized in the rolling process is fully considered, the preset roughness of the roller during the rolling of the strip steel can be flexibly selected according to the requirement of the minimum waviness, the first preset coefficient a can be set to be 0.0014-0.0016, and the second preset coefficient b can be set to be 0.13-0.15; preferably, a is 0.0015 and b is 0.14.
In a specific embodiment, obtaining the first preset coefficient and the second preset coefficient according to the preset roughness includes:
according to the formula a = -0.00044Ra 2 +0.00297Ra-0.00067 to obtain a first preset coefficient; according to the formula b =0.03764Ra 2 -0.23352Ra +0.23885, where Ra is the preset roughness, obtaining a second preset coefficient.
Specifically, the first preset coefficient and the second preset coefficient can be accurately calculated by the above formula to accurately obtain the preset relational expression, and the step S13 is performed after the preset relational expression is obtained.
And S13, obtaining multiple groups of process data of the galvanizing process parameters according to the target waviness and the preset relational expression.
Specifically, the waviness of the surface of the strip steel is a result of combined action of various galvanizing process parameters in the galvanizing process, each parameter has a certain influence on the finally formed waviness, and the target waviness can be achieved through adjustment of different process data in the galvanizing process parameters, so that multiple sets of process data capable of achieving the target waviness in the galvanizing process parameters can be obtained through a preset relational expression.
In a specific embodiment, the obtaining of the multiple sets of process data of the galvanizing process parameters according to the target waviness and the preset relational expression comprises:
obtaining the adjustment interval of each parameter in the galvanizing process parameters; judging whether the target waviness and the parameter values of all the adjustment intervals meet a preset relational expression or not; and if so, correspondingly obtaining multiple groups of process data according to the parameter values meeting the preset relational expression.
Specifically, the adjustment range of each parameter in the galvanizing process parameters is limited by actual conditions, the adjustment interval is the range within which each parameter in the galvanizing process parameters on the hot galvanizing production line can be adjusted, the parameter values of all the adjustment intervals are actual values which can be implemented on the hot galvanizing production line, when a preset relational expression is satisfied, the parameter values are correspondingly determined as process data, and then multiple sets of process data can be obtained, and the process enters step S14 after the multiple sets of process data are obtained.
And S14, controlling the zinc coating to the strip steel to be galvanized according to target process data in the plurality of sets of process data.
Specifically, the target process data can be process data which is convenient to implement on a hot galvanizing production line on site, and can be conveniently implemented by field workers while meeting the target waviness; the target process data obtained by further screening a plurality of groups of process data can be obtained, the screening can be determined according to the experience of technicians, or can be determined according to the calibration test of each parameter in the process data, the target process data which can achieve smaller waviness can be screened from the plurality of groups of process data, and the zinc layer is plated to the strip steel to be galvanized according to the target process data.
In one specific embodiment, controlling the plating of a zinc layer onto a strip to be galvanized according to target process data in a plurality of sets of process data comprises:
acquiring an air knife distance threshold value, an air knife height threshold value and a stabilizing roller depth threshold value; determining target process data in a plurality of groups of process data according to the air knife distance threshold, the air knife height threshold and the stabilizing roller depth threshold; and controlling the air knife and the stabilizing roller to be positioned at the target position according to the target process data, and drawing the galvanized steel strip to be galvanized with the galvanized layer.
Specifically, each parameter in the process data has an optimal range, and the waviness of the galvanized strip steel is easier to optimize in the optimal range. Taking the example that the depth of the stabilizing roller is constantly set to 117.5mm, the height of the air knife and the distance of the air knife are adjusted, a plurality of groups of process data are obtained under the condition that a preset relational expression is met, the actual waviness is measured after actual implementation, and all parameters and the actual measurement result of the waviness are detailed in table 1.
Table 1:
the air knife distance is constantly set to be 8mm, the air knife height and the air stabilizing roller depth are adjusted, a plurality of groups of process data are obtained under the condition that a preset relational expression is met, the actual waviness is measured after actual implementation, and the parameters and the actual measurement result of the waviness are detailed in a table 2.
Table 2:
the air knife distance is set to be 8mm constantly, the influence of preset roughness on the surface waviness of the strip steel is considered, the height of the air knife and the depth of the air stabilizing roller are adjusted, a plurality of groups of process data are obtained under the condition that preset relational expressions are met, the actual waviness is measured after actual implementation, and the actual measurement results of all parameters and the waviness are detailed in table 3.
Table 3:
as can be seen from the analysis in tables 1 and 2, the air knife distance threshold may be set to 9mm, preferably 8mm, and further preferably 7mm; the air knife height threshold may be set at 550mm, preferably 400mm, further preferably 200mm.
As can be seen from the analysis of table 2 and table 3, the stabilizing roller depth threshold may be set to 150mm, preferably 140mm, more preferably 130mm, and still more preferably 120mm. In addition, the selection value of the stabilizing roll Depth depends on the roughness Ra of the working roll to a great extent, and in order to achieve better control effect, the preset roughness is controlled to be below 4.5um, preferably below 3.5um, and more preferably below 3.0 um. And determining target process data in a corresponding threshold range by the multiple groups of process data, controlling the air knife and the stabilizing roller to move to target positions, then drawing the strip steel to be galvanized into a zinc pot, sequentially passing through the sink roller and the stabilizing roller, and then completing the plating of a zinc layer by air knife blowing. According to the control method provided by the invention, the surface waviness Wsa value of the hot-dip galvanized steel strip can be controlled to be below 0.41um, preferably below 0.35um, more preferably below 0.31um, more preferably below 0.26um, and most preferably below 0.23 um.
In practical application, because the degree of influence of each parameter adjustment on the waviness in the process data is different, the implementation difficulty may be increased or the accurate control of the waviness cannot be realized by determining the target process data within the air knife distance threshold, the air knife height threshold and the stabilizing roller depth threshold.
To address the above issues, in one particular embodiment, the determining target process data in the plurality of sets of process data based on the gas knife distance threshold, the gas knife height threshold, and the stabilizing roller depth threshold comprises:
acquiring the preset priority of the galvanizing process parameters; according to the preset priority, the air knife distance threshold, the air knife height threshold and the stabilizing roller depth threshold, sequentially determining an air knife distance value, an air knife height value and a stabilizing roller depth value in a plurality of groups of process data; and obtaining target process data according to the air knife distance value, the air knife height value and the stable roller depth value.
Specifically, among the parameters of the process data, the air knife distance is relatively easiest to adjust, and the influence degree on the waviness is minimum; the height of the air knife is the closest to the thickness of the zinc layer coating, and the adjusting effect is relatively lagged; the depth of the stabilizing roller is most difficult to adjust in practice. The preset priority can be set as the air knife distance, the air knife height and the depth of the stabilizing roller according to the sequence of adjustment, and the air knife distance value, the air knife height value and the depth of the stabilizing roller are sequentially determined in a plurality of groups of process data according to the preset priority, so that the efficiency and the accuracy of determining target process data can be improved, and the field implementation is facilitated.
Based on the same inventive concept as the control method, the embodiment of the invention also provides a strip steel, which comprises a base material and a zinc layer, wherein the zinc layer is plated on the base material by any one of the control methods.
Based on the same inventive concept as the control method, an embodiment of the present invention further provides a control apparatus for hot dip galvanizing of strip steel, referring to fig. 3, the apparatus includes:
the first acquisition module 301 is used for acquiring the target waviness of the strip steel to be galvanized;
a second obtaining module 302, configured to obtain a preset relational expression between the target waviness and a galvanizing process parameter;
an obtaining module 303, configured to obtain multiple sets of process data of the galvanizing process parameter according to the target waviness and the preset relational expression;
and the control module 304 is used for controlling the zinc coating to the strip steel to be galvanized according to the target process data in the multiple groups of process data.
In an alternative embodiment, the galvanizing process parameters include a gas knife distance D, a gas knife height H, and a stabilizing roller Depth, and the second acquiring module includes:
the first obtaining submodule is used for obtaining the preset roughness of a working surface of a target roller, wherein the target roller is a roller positioned on a rack for rolling the tail end of the strip steel to be galvanized;
the first obtaining submodule is used for obtaining a first preset coefficient and a second preset coefficient according to the preset roughness;
and the second obtaining submodule is used for obtaining the preset relational expression according to a formula D multiplied by ln (H multiplied by Depth) less than or equal to (Wsa-b)/a, wherein Wsa is the target waviness, a is a first preset coefficient, and b is a second preset coefficient.
In an alternative embodiment, the first obtaining sub-module includes:
a first obtaining unit configured to obtain a first value in accordance with formula a = -0.00044Ra 2 +0.00297Ra-0.00067 to obtain the first preset coefficient;
a second obtaining unit for obtaining 0.03764Ra according to the formula b = 3242 2 -0.23352ra +0.23885, obtaining said second preset coefficient, wherein Ra is said preset roughness.
In an alternative embodiment, the obtaining module includes:
the second obtaining submodule is used for obtaining the adjusting interval of each parameter in the galvanizing technological parameters;
the judgment submodule is used for judging whether the target waviness and the parameter values of all the adjustment intervals meet the preset relational expression or not;
and the third obtaining submodule is used for correspondingly obtaining the multiple groups of process data according to the parameter values meeting the preset relational expression when the target waviness and the parameter values of all the adjusting intervals meet the preset relational expression.
In an alternative embodiment, the control module includes:
the third obtaining submodule is used for obtaining an air knife distance threshold, an air knife height threshold and a stabilizing roller depth threshold;
a determining submodule for determining the target process data from the plurality of sets of process data based on the air knife distance threshold, the air knife height threshold, and the stabilizing roller depth threshold;
and the traction submodule is used for controlling the air knife and the stabilizing roller to be positioned at a target position according to the target process data and drawing the galvanized steel strip to be galvanized with the galvanized layer.
In an alternative embodiment, the determining sub-module includes:
the acquisition unit is used for acquiring the preset priority of the galvanizing process parameters;
the determining unit is used for sequentially determining an air knife distance value, an air knife height value and a stabilizing roller depth value in the multiple groups of process data according to the preset priority, the air knife distance threshold, the air knife height threshold and the stabilizing roller depth threshold;
and the third obtaining unit is used for obtaining the target process data according to the air knife distance value, the air knife height value and the stabilizing roller depth value.
Based on the same inventive concept as the control method, embodiments of the present invention also provide an electronic device, comprising a processor and a memory coupled to the processor, the memory storing instructions that, when executed by the processor, cause the electronic device to perform the steps of any of the methods of the control method.
Based on the same inventive concept as the control method, the embodiment of the present invention also provides a computer-readable storage medium on which a computer program is stored, which, when executed by a processor, implements the steps of any one of the methods of the control method.
The technical scheme provided by the embodiment of the invention at least has the following technical effects or advantages:
the method comprises the steps of obtaining a target waviness of a strip steel to be galvanized, obtaining a preset relational expression of the target waviness and galvanizing process parameters, calculating through the preset relational expression to obtain multiple groups of process data meeting the target waviness requirement, screening out the target process data through the multiple groups of process data, controlling a galvanized layer to be plated on the strip steel to be galvanized, further optimizing the process data capable of achieving the target waviness, and determining more optimized target process data to reduce the waviness of the strip steel in a hot galvanizing process; meanwhile, the control method can be realized by adopting the equipment and the process conditions of the conventional hot galvanizing production line, and has stronger applicability and favorable popularization.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (modules, systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A control method for hot galvanizing of strip steel is characterized by comprising the following steps:
obtaining the target waviness of the strip steel to be galvanized;
acquiring a preset relational expression between the target waviness and the galvanizing process parameters;
obtaining a plurality of groups of process data of the galvanizing process parameters according to the target waviness and the preset relational expression;
and controlling the plating of a zinc layer to the strip steel to be galvanized according to target process data in the plurality of sets of process data.
2. The control method for hot galvanizing strip steel according to claim 1, wherein the galvanizing process parameters include an air knife distance D, an air knife height H and a stabilizing roller Depth Depth, and the obtaining of the preset relation between the target waviness and the galvanizing process parameters includes:
acquiring preset roughness of a working surface of a target roller, wherein the target roller is a roller positioned on a rack for rolling the tail end of the strip steel to be galvanized;
obtaining a first preset coefficient and a second preset coefficient according to the preset roughness;
and obtaining the preset relational expression according to a formula D multiplied by ln (H multiplied by Depth) less than or equal to (Wsa-b)/a, wherein Wsa is the target waviness, a is a first preset coefficient, and b is a second preset coefficient.
3. The control method for hot galvanizing of strip steel according to claim 2, wherein the obtaining of the first preset coefficient and the second preset coefficient according to the preset roughness includes:
according to the formula a = -0.00044Ra 2 +0.00297Ra-0.00067 to obtain the first preset coefficient;
according to the formula b =0.03764Ra 2 -0.23352ra +0.23885, obtaining said second preset coefficient, wherein Ra is said preset roughness.
4. The control method for hot galvanizing strip steel according to claim 1, wherein the obtaining of the multiple sets of process data of the galvanizing process parameters according to the target waviness and the preset relational expression includes:
obtaining the adjustment interval of each parameter in the galvanizing process parameters;
judging whether the target waviness and the parameter values of all the adjustment intervals meet the preset relational expression or not;
and if so, correspondingly obtaining the multiple groups of process data according to the parameter values meeting the preset relational expression.
5. The control method for hot galvanizing of steel strip according to claim 1, wherein the controlling of the galvanizing of the steel strip to be galvanized according to the target process data in the plurality of sets of process data includes:
acquiring an air knife distance threshold value, an air knife height threshold value and a stabilizing roller depth threshold value;
determining the target process data in the plurality of sets of process data based on the air knife distance threshold, the air knife height threshold, and the stabilizing roller depth threshold;
and controlling the air knife and the stabilizing roller to be positioned at the target position according to the target process data, and drawing the strip steel to be galvanized with the zinc coating layer.
6. The method for controlling hot galvanizing on steel strip according to claim 1, wherein the determining the target process data in the plurality of sets of process data according to the air knife distance threshold, the air knife height threshold and the stabilizing roller depth threshold includes:
acquiring a preset priority of the galvanizing process parameters;
according to the preset priority, the air knife distance threshold, the air knife height threshold and the stabilizing roller depth threshold, sequentially determining an air knife distance value, an air knife height value and a stabilizing roller depth value in the multiple groups of process data;
and obtaining the target process data according to the air knife distance value, the air knife height value and the stable roller depth value.
7. A steel strip comprising a substrate and a zinc layer, wherein the zinc layer is coated on the substrate by a control method according to any one of claims 1 to 6.
8. A control device for hot dip galvanizing of strip steel, the device comprising:
the first acquisition module is used for acquiring the target waviness of the strip steel to be galvanized;
the second acquisition module is used for acquiring a preset relational expression between the target waviness and the galvanizing process parameters;
the obtaining module is used for obtaining a plurality of groups of process data of the galvanizing process parameters according to the target waviness and the preset relational expression;
and the control module is used for controlling the galvanized layer to be plated on the strip steel to be galvanized according to target process data in the plurality of groups of process data.
9. An electronic device comprising a processor and a memory coupled to the processor, the memory storing instructions that, when executed by the processor, cause the electronic device to perform the steps of the method of any of claims 1-6.
10. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 6.
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| CN202210843630.XA CN115233129A (en) | 2022-07-18 | 2022-07-18 | Control method and device for hot galvanizing of strip steel and strip steel |
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| CN202210843630.XA CN115233129A (en) | 2022-07-18 | 2022-07-18 | Control method and device for hot galvanizing of strip steel and strip steel |
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| CN113430478A (en) * | 2021-05-31 | 2021-09-24 | 武汉钢铁有限公司 | Method for eliminating zinc corrugation defect of alloyed hot-dip galvanized steel sheet |
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| CN102607504A (en) * | 2012-03-01 | 2012-07-25 | 首钢总公司 | Method for detecting spangle sizes on surfaces of hot-dipped galvanized sheets on line |
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